Patent Publication Number: US-9836905-B2

Title: System for causing garage door opener to open garage door and method

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of U.S. patent application Ser. No. 14/171,690, titled “System for Causing Garage Door Opener to Open Garage Door and Method,” filed Feb. 3, 2014, which is a continuation of and claims benefit to prior U.S. patent application Ser. No. 12/348,154, filed Jan. 2, 2009, the entire contents of which are hereby incorporated by reference in their entireties. 
    
    
     FIELD OF THE INVENTION 
     The present invention relates generally to the field of electronic garage door opener systems. More specifically, the present invention relates to electronic garage door opener systems configured to actuate the garage door, such as in the event of an emergency condition. 
     BACKGROUND 
     More and more vehicles are equipped with remote starting capability. Remote starters allow the vehicle user to, for example, push a button on a key fob from inside the house to start the vehicle&#39;s engine, thereby allowing the vehicle engine time to warm up or the vehicle&#39;s interior environment to adjust to the user&#39;s desired settings. The user&#39;s vehicle may be located outside or in an enclosed area, such as a closed garage. If the vehicle is outside, the surrounding environment is able to dissipate the harmful emissions. However, if the vehicle is located in a closed garage, the environmental conditions, such as emissions and temperature, resulting from the vehicle&#39;s engine may reach levels that are dangerous, and even fatal, to humans and animals located in, or above, the garage. One way to solve this problem is for the user to enter the garage and manually actuate the garage door to provide proper ventilation. However, situations may arise where the car is accidentally started (e.g., child playing with the remote starter) or the user forgets to open the garage door. 
     Additionally, Plug in hybrid electric vehicles (PHEV) may be utilized for backup electrical power generation in the event of a power outage. The engine of the PHEV may be configured to automatically turn on during a power outage to keep appliances, such as the refrigerator or HVAC, operating. Combustion engine electrical power generators may be utilized to perform the same function. If located in an enclosed garage, both PHEVs and combustion engine generators are capable of creating harmful environmental conditions reaching levels that are dangerous, and even fatal, to humans and animals located in, or above, the garage. This configuration is particularly problematic because the power outage may occur while the user is sleeping or outside the house and the starting of the PHEV or combustion engine generator may go unnoticed by the user. Even if the power outage is noticed by the user, when the power returns as a result of the PHEV or combustion engine generator, the user may incorrectly believe that power from the electrical power grid has been restored. In either case, the result is that the user fails to open the garage door to provide proper ventilation. 
     Accordingly, there is a need for a system and method to address these and/or other issues. 
     SUMMARY 
     A first embodiment includes a system for causing a garage door opener to open a garage door. The system comprises an interface coupled to an environment sensor and configured to receive data from the environment sensor. The system also includes processing electronics coupled to the interface, configured to receive data from the interface, configured to use the received data to determine whether an environmental condition exists, and configured to provide a command to cause the garage door opener to open the garage door based on a determination that the environmental condition exists. 
     A second embodiment includes a method for causing a garage door opener to open a garage door. The method comprises receiving data from an environment sensor and determining that an environmental condition exists based on the received data. The method further comprises providing a command to cause the garage door opener to open the garage door, wherein providing the command is based on the determination that the environmental condition exists. 
     A third embodiment includes a system for a vehicle and configured to cause a garage door opener to open a garage door. The system comprises an interface coupled to a first sensor and configured to receive first data from the first sensor. The system further comprises processing electronics coupled to the interface, configured to receive the first data from the interface, and configured to use the first data to determine whether to actuate the garage door. The system further comprises a transmitter coupled to the processing electronics and configured to receive a command from the processing electronics and to transmit a control signal to a wireless receiver of the garage door opener in response to the command, the control signal formatted for recognition by the wireless receiver and to cause the garage door opener to open the garage door. The processing electronics provides the command to the transmitter based on the determination of whether to actuate the garage door. 
     A fourth embodiment includes a garage door opener configured to actuate a garage door and coupled to a wireless receiver for receiving a control signal. The garage door opener comprises an interface coupled to a first sensor and configured to receive first data. The garage door opener further comprises processing electronics coupled to the interface and configured to receive the first data from the interface and to use the first data to determine whether to actuate the garage door. The processing electronics provides a command to the garage door opener to actuate the garage door based on the determination of whether to actuate the garage door. 
     A fifth embodiment includes a method for opening a garage door using a garage door opener. The method comprises receiving first data from a first sensor and receiving second data from a remote source via a wireless receiver. The method further comprises determining whether to actuate the garage door based on the first and second data received, and providing a command to cause the garage door opener to open the garage door. Providing the command is based on the determination of whether to actuate the garage door. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of an emergency garage door actuation configuration including a garage door opener and a vehicle in accordance with an embodiment. 
         FIG. 2A  is a schematic block diagram of an control system in a vehicle configured to determine conditions for actuating a garage door in accordance with an embodiment. 
         FIG. 2B  is a schematic block diagram of an control system in a vehicle configured to determine conditions for actuating a garage door in accordance with an embodiment. 
         FIG. 3  is a schematic block diagram of sensors coupled to a control system in a vehicle configured to determine conditions for actuating a garage door in accordance with an embodiment. 
         FIG. 4A  is a flow diagram illustrating the steps taken by a control system in a vehicle to cause the garage door to actuate the garage door in accordance with an embodiment. 
         FIG. 4B  is a flow diagram illustrating the steps taken by a control system in a vehicle to cause the garage door to actuate the garage door in accordance with an embodiment. 
         FIG. 5  is a schematic block diagram of an garage door opener configured to determine conditions for actuating a garage door in accordance with an embodiment. 
         FIG. 6  is a schematic block diagram of sensors coupled to a garage door opener configured to determine conditions for actuating a garage door in accordance with an embodiment. 
         FIG. 7A  is a flow diagram illustrating the steps taken by a garage door opener to cause the garage door opener to actuate the garage door in response to sensed conditions in accordance with an embodiment. 
         FIG. 7B  is a flow diagram illustrating the steps taken by a garage door opener to cause the garage door opener to actuate the garage door in response to sensed conditions in accordance with an embodiment. 
         FIG. 8  is a schematic block diagram of an control system in a vehicle and a garage door opener configured to determine conditions for actuating a garage door in accordance with an embodiment. 
         FIG. 9  is a flow diagram illustrating the steps taken by control system in a vehicle and a garage door opener to cause the garage door opener to actuate the garage door in response to sensed conditions in accordance with an embodiment. 
         FIG. 10  is a schematic block diagram of a trainable transmitter in used to cause the garage door opener to actuate the garage door. 
         FIG. 11  is a schematic block diagram of a vehicle control system coupled to the garage door control system in the vehicle. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       FIG. 1  is a perspective view of a garage door opener  14  and vehicle  10  including an electronic transmitter in accordance with an embodiment. A vehicle  10 , which may be an automobile, truck, sport utility vehicle (SUV), mini-van, or other vehicle, includes an electronic transmitter  24 . In alternative embodiments, an electronic transmitter  24  may be embodied in other systems such as a portable housing, key fob, key chain, other hand-held device, or any other device. In  FIG. 1 , electronic transmitter  24  is illustrated mounted to an overhead console of vehicle  10 . Alternatively, one or more of the elements of electronic transmitter  24  may be mounted to other vehicle interior elements such as a visor  22 , an instrument panel  26 , a rearview mirror (not shown), a dashboard, seat, center console, door panel, or other appropriate location in the vehicle. 
     Electronic transmitter  24  may be configured to control a garage door opener  14  (e.g., to issue a signal that causes the garage door opener  14  to open a garage door). Electronic transmitter  24  may be trained using an original transmitter used to control garage door opener  14 . Original transmitter is a transmitter, typically a hand-held transmitter, which is sold with garage door opener  14  or as an after-market item, and which is configured to transmit an activation signal at a predetermined carrier frequency and having control data configured to actuate garage door opener  14 . For example, original transmitter can be a hand-held garage door opener transmitter configured to transmit a garage door opener signal at a frequency, such as 355 Megahertz (MHz), wherein the activation signal has control data, which can be fixed code or cryptographically-encoded code (e.g., a rolling code). In this example, garage door opener  14  may be configured to open a garage door  18  in response to receiving the activation signal from an original transmitter. Accordingly, garage door opener  14  includes receiver  16  for receiving wireless signals including control data, which would control garage door opener  14 . 
     Vehicle  10  may be configured with a remote starter  12  for remotely starting the engine of vehicle  10 . Remote starter  12  may be a portable housing, key fob, key chain, other hand-held device, or any other device. Vehicle  10  may also be a plug in hybrid electric vehicle (PHEV) that plugs into wall plug  20  to recharge battery cells during inoperable periods. PHEV may also be configured to act as an electrical power generator to supply power through wall plug  20  in the event of an electrical power outage. PHEV may be configured to automatically start its combustion engine to generate electrical power during a power outage or it may require manual or remote ignition. Alternatively, in various embodiments, vehicle  10  may be a combustion engine electrical power generator configured to be either manually, remotely or automatically actuated in the event of a power outage. 
     To properly actuate the garage door  18  and avoid a harmful garage environment created by vehicle  10 , several determinations can be made, including: whether vehicle  10  has been started, whether vehicle  10  is located in the garage, and whether the garage door  18  is open. If the only determination made is that vehicle  10  is started, then the garage door  18  may be actuated if, for example, the vehicle  10  were located in the driveway, which may be an unnecessary actuation of the garage door. If the only determinations made were that vehicle  10  is started and that vehicle  10  is located in the garage, then the garage door  18  may be improperly actuated if, for example, the garage door  18  were already opened. Determining whether to actuate the garage door  18  in response to a harmful garage environment may be made by vehicle  10 , garage door opener  14 , or vehicle  10  in conjunction with garage door opener  14 . At least one sensor disposed in either the garage or vehicle  10  may be configured to provide the information needed to determine whether to properly actuate the garage door  18 . 
     Emergency Actuation Determined by the Vehicle 
     Referring to  FIG. 2A , in a first exemplary embodiment, vehicle  10  may be include a control system  200  for opening a garage door using a garage door opener  14  that is remote from the vehicle. The control system  200  may include, an interface  202 , processing electronics  204 , transmitter  206  and sensor(s)  208 . Interface  202  may be configured to receive data from sensor(s)  208  disposed in or on the vehicle  10 . The interface being coupled to processing electronics  204  and configured to communicate the received data to the processing electronics  204 . The processing electronics  204  is configured to process the data to determine whether the garage door  18  should be actuated. For example, the processing electronics  204  may need to determine whether the vehicle engine is started, whether the vehicle is in the garage and whether the garage door is closed. If the processing electronics  204  determines that the garage door  18  should be actuated, processing electronics  204  provides an actuation command to transmitter  206 . For example, an actuation command may be provided if the vehicle is started, the vehicle is in the garage and the garage door is closed. Alternatively, an actuation command may be provided when an environmental condition is determined to exist (e.g., high vehicle emission level). Transmitter  206  is configured to receive the actuation command from processing electronics  204  and to generate a control signal for transmission to the a wireless receiver  16  of the garage door opener  14 . The transmitter  206  provides a control signal that is formatted for recognition by the wireless receiver. The wireless receiver  16  receives the control signal from transmitter  206  and provides an appropriately formatted signal to the garage door opener  14 , and in response, the garage door opener  14  opens the garage door  18 . 
     Referring to  FIG. 2B , interface  202  may also be coupled to the vehicle&#39;s engine control unit (ECU)  210  or other vehicle systems. In particular, ECU  210  and other vehicle systems may be well suited for providing data indicating that the vehicle engine is started. Other vehicle systems for determining whether the engine is started may include the vehicle&#39;s ignition system, including components for remote starting and push button engine ignition. When vehicle  10  is started, ECU  210  or other vehicle systems may be configured to provide data to interface  202 . The received data is provided to processing electronics  204  for determining whether the vehicle engine is started. 
     As described above with respect to  FIGS. 2A-B , interface  202  may be coupled to sensor(s)  208 . The interface is also coupled to processing electronics  204  and configured to provide data from sensor(s)  208  to processing electronics  204 . Processing electronics  204  uses the received data to determine whether an actuation command should be provided.  FIG. 3  shows some of the various types of sensors that may be coupled to interface  302 . Interface  302  is coupled to processing electronics  304  and communicates data from the various sensors to processing electronics  304 . Transmitter  306  is coupled to processing electronics and configured to receive an actuate command from processing electronics  304 . Transmitter  306  is configured to generate and transmit a control signal in response to an actuation command. Receiver  308  is coupled to processing electronics  304  and configured to receive signals from remote transmitters (e.g., an original transmitter, transmitter disposed in a garage door opener). 
     The sensors coupled to interface  302  may include an engine control unit (ECU)  310 , a field sensor  312 , an environment sensor  314  (e.g., emission sensor, vibration sensor, temperature sensor), an RF sensor  316 , a radar sensor  318 , a sonar sensor  320 , a camera  322 , a photoelectric sensor  324 , a global positioning system  326 , or any other type of sensor capable of being disposed in or on vehicle  10 . One or more of the sensors may be disposed in or on the vehicle and configured to provide data to processing electronics  304  via interface  302  for determining whether an engine is started, whether the vehicle is in the garage and whether the garage door is closed. Various sensors may be better suited for providing data for assisting in particular determinations. For example, ECU  310  (or other vehicle systems), field sensor  312  and environment sensor  314  may be ideally suited for providing data for determining whether an engine is started; environment sensor  314 , RF sensor  316 , radar sensor  318 , sonar sensor  320 , camera  322 , photoelectric sensor  324  and global positioning system  326  may be ideally suited for providing data for determining whether vehicle  10  is in the garage; environment sensor  314 , RF sensor  316 , radar sensor  318 , sonar sensor  320 , camera  322 , photoelectric sensor  324  may be ideally suited for providing data for determining whether the garage door is closed. 
     Referring to  FIGS. 3 and 4A , in an exemplary embodiment, interface  302  is coupled to environment sensor  314 . In step  400 , processing electronics  304  disposed in vehicle  10  receives data from environment sensor  314  via interface  302  and, in step  402 , uses the received data to determine whether an environmental condition exists. If the environmental condition does not exist, the processing electronics continues to receive and process data. If the data indicates that an environmental condition exists, then, in step  404 , processing electronics  304  provides an actuation command to the transmitter  306  to generate a control signal formatted for recognition by a wireless receiver of the garage door opener  14  and to cause the garage door opener  14  to open the garage door  18 . In step  406 , the transmitter  306  generates the control signal in response to the actuation command. In step  408 , the transmitter  306  transmits the control signal to the wireless receiver  16  of the garage door opener  14  in response to the command in order to cause the garage door to actuate. 
     As illustrated in  FIG. 4A , vehicle  10  may be configured use an environment sensor  314  to sense an environmental condition and provide a control signal to cause an actuation the garage door in response to the sensed condition. Environment sensor  314  may include at least one of an emission sensor, a vibration sensor and a temperature sensor. A sensed environmental condition may indicate that a vehicle engine is started, that vehicle  10  is in the garage, and that the garage door is closed. For example, using an emission sensor, an environmental condition may be sensed when emission levels exceed a threshold. High emission levels would likely indicate that the vehicle engine is started because emission would otherwise be undetectable (assuming no other engines in the garage were started). High emission levels would likely indicate that the vehicle was in an enclosed area, such as a garage, where emissions would be at least partially contained. High emission levels would likely indicate that the garage door is closed because the high emission levels would be the result of little or no ventilation. Thus, data relating to an environmental condition may be all that is necessary to determine whether to actuate the garage door. 
     One type of environment sensor that may be used to determine whether the garage door should be actuated is an emission sensor disposed in or on vehicle  10  and configured to sense emission levels from vehicle  10 . Emissions from vehicle  10  may include, hydrocarbons, Nitrogen oxides (NO x ), carbon monoxide (CO), carbon dioxide (CO 2 ), particulates, sulfur oxides (SO x ) and other air toxins. Emission sensor may be configured to sense one or more of these vehicle emissions to assist in determining whether the vehicle engine has been started. Emission sensor may be configured to provide data to processing electronics  304  via interface  302 . Processing electronics  304  may be configured to determine that the vehicle is started when the sensed emission exceeds a threshold. Further, the emission sensor may be configured to sense at least one of these vehicle emissions to assist in determining whether the vehicle is in an enclosed area, such as the garage. In an enclosed area, the concentration of emission levels will be higher than if the vehicle were out side. 
     The emission sensor may be configured to provide a data to processing electronics  304  via interface  302 . Processing electronics  304  may be configured to determine that the vehicle is in the garage when the sensed emission level exceeds a threshold. The emission sensor may be configured to sense one or more of these vehicle emissions to assist in determining whether the garage door is closed. The concentration of emission levels will be higher when the garage door is closed than if vehicle  10  were out side, or if vehicle  10  were in the garage with the garage door open. The emission sensor may be configured to provide data to interface  302  when the sensed emission exceeds a threshold. One or more threshold levels may be set to provide data to the interface  302  for the assisting in the various determinations (e.g., vehicle started, vehicle in garage and garage door closed). Ideally, the one or more thresholds would be set to a level that is not harmful to people and animals. Further, processing electronics  304  may be configured to identify differences in the received data to determine whether the strength of the emissions level indicates that the vehicle engine is started, that the vehicle engine is started and the vehicle is in the garage, or that the vehicle engine is started, in the garage and the garage door is closed. 
     Environment sensor  314  may also include a vibration sensor, such as an acoustic sensor or other type of mechanical vibration sensor, configured to sense vibration levels. The vibration sensor may be disposed in or on a vehicle and used to determine whether the garage door  18  should be actuated. When the engine of vehicle  10  is started, the engine produces vibrations that are transferred through the air and the structure of the vehicle. When the vehicle engine is turned off, no vibrations are produced. Vibration sensor may be configured sense the vibrations produced by the vehicle. Vibration sensor may be configured to provide data to processing electronics  304  via interface  302 . Processing electronics  304  may be configured to determine that the vehicle is started when the sensed vibrations exceeds a threshold. When the vehicle is located in an enclosed area, such as the garage, the noise, or vibrations, from the idle engine will appear louder, or stronger, than if the vehicle  10  were outside. The vibrations from the engine are stronger in a garage than outside because the sound waves produced by the engine are reflected off the garage walls and ceiling back to the vehicle  10 , whereas, outside the garage there are minimal reflections from the atmosphere and surrounding objects (e.g., buildings, trees). Thus, inside a garage, the strength of the vibrations will be greater than if the vehicle were out side. 
     The vibration sensor may be configured to provide data to processing electronics  304  via interface  302 . Processing electronics  304  may be configured to determine that the vehicle is in the garage when the sensed vibration level exceeds a threshold. When vehicle  10  is located in a garage and the garage door  18  closed, the vibrations from the started engine will appear even stronger than if the vehicle  10  were in the garage with the garage door  18  open. The vibrations from the engine are stronger because the sound waves are reflected off the garage walls, ceiling and door back to the vehicle  10 , whereas, when the garage door is open, some of the sound waves will escape through the garage door opening. The vibration sensor may be sensitive enough to detect differences in vibration strength when the garage door is closed as compared to open. The vibration sensor may be configured to provide data to processing electronics  304  via interface  302 . Processing electronics  304  may be configured to determine that the garage door is closed when the sensed vibration level exceeds a threshold. One or more threshold levels may be set to provide data to the interface  302  for the assisting in the various determinations (e.g., vehicle started, vehicle in garage and garage door closed). Further, processing electronics  304  may be configured to identify differences in the received data to determine whether the strength of the vibration level indicates that the vehicle engine is started, that the vehicle engine is started and the vehicle is in the garage, or that the vehicle engine is started, in the garage and the garage door is closed. 
     Environment sensor  314  may also include a temperature sensor disposed in or on the vehicle  10  and configured to sense the temperature outside the vehicle  10  or the engine temperature. When the engine of vehicle  10  is started, the heat from the engine and exhaust increases the ambient temperature around the vehicle  10  and the temperature of the engine. Temperature sensor may be configured to provide data to processing electronics  304  via interface  302 . Processing electronics  304  may be configured to determine that the vehicle is started when the sensed temperature around the vehicle  10  or of the engine exceeds a threshold. The engine temperature may also be monitored and provide by ECU  310  or any other type of temperature sensor coupled to the engine. When the engine of vehicle  10  is started and running in a garage, the heat from the engine and exhaust increase the ambient temperature of the garage. The temperature sensor may be configured to send data to processing electronics  304  via interface  302 . Processing electronics  304  may be configured to determine that the vehicle is in the garage when the temperature sensed rises above a threshold. When the engine of vehicle  10  is started and in a garage with the garage door closed, the heat from the engine and exhaust increase the ambient temperature of the garage. The temperature level will be higher than if the vehicle were in the garage with the garage door open because an open garage door would allow the heat generated by the engine to escape through the garage door opening. Thus, the temperature sensor may be sensitive enough to detect differences in temperature when the garage door is closed as compared to open. The temperature sensor may be configured to provide data to processing electronics  304  via interface  302 . Processing electronics  304  may be configured to determine that the garage door is closed when the sensed temperature exceeds a threshold. One or more threshold levels may be set to provide data to the interface  302  for the assisting in the various determinations (e.g., vehicle started, vehicle in garage and garage door closed). 
     Further, processing electronics  304  may be configured to identify differences in the received data to determine whether the temperature level indicates that the vehicle engine is started, that the vehicle engine is started and the vehicle is in the garage, or that the vehicle engine is started, in the garage and the garage door is closed. The thresholds may be set from a varying baseline temperature. The varying baseline temperature may be used to account for different seasons, times of the day or other changes in weather patterns. Processing electronics  304  may use various means and methods to establish a baseline temperature from which thresholds may be determined. For example, processing electronics  304  may be configured to access the internet via server  1146  coupled vehicle control system  1106  (see  FIG. 11 ) to obtain current outside temperature information. GPS or other location systems may provide the location information needed when access the internet. Alternatively, location information (e.g., zip code) may be provided when the system is configured. Processing electronics  304  may also be configured to use historic data to determine a baseline temperature for a given day and hour. 
     Additional sensors may be used in conjunction with environment sensor  314  to assist processing electronics in determining whether the vehicle  10  is started, whether vehicle  10  is in the garage and/or whether the garage door is closed. For example, sensor(s) can be employed that more directly indicate whether the vehicle is started, whether the garage door is open or closed, and whether the vehicle is in the garage. For example, a sensor on the vehicle may indicate whether the vehicle is running, a sensor on the garage door opener may indicate whether the garage door is opened or closed, and a sensor on the vehicle or in the garage may indicate the location of the vehicle. 
     Alternatively, processing electronics  304  may be configured to simply detect a harmful, or near harmful, condition rather than attempting to determine that the vehicle is started and in the garage with the garage door closed. If emission levels or temperature levels in the garage exceed a threshold, the garage door may be actuated irrespective of whether the vehicle engine is started. For example, a combustion engine electrical power generator, or a vehicle without emergency garage door actuation capability, may be started in the same garage as vehicle  10 . If processing electronics  304  sense emission or temperature levels above the thresholds then processing electronics  304  may be configured to provide an actuation command to transmitter  306  to send a control signal to the garage door opener  14  in order to cause the garage door to open and provide needed ventilation. 
     Referring to  FIGS. 3 and 4B , in an exemplary embodiment, interface  302  is coupled to at least one sensor. In step  410 , processing electronics  304  disposed in vehicle  10  receives data from a sensor or vehicle system via interface  302 , and uses the received data in step  414  to determine whether the vehicle engine is started. If processing electronics determines that the engine has not started then processing electronics continues to receive and process data. In step  412 , processing electronics  304  disposed in vehicle  10  receives data from one or more sensors. In step  416 , processing electronics  304  uses the received data to determine whether the vehicle  10  is in the garage and whether the garage door is closed. If processing electronics determines that the vehicle is not in the garage or that the garage door is open then processing electronics continues to receive and process data. If processing electronics  304  determines that the vehicle  10  is started, vehicle  10  is in the garage and that the garage door is closed, then in step  418 , processing electronics is configured to provide an actuation command to transmitter  306  to generate a control signal formatted for recognition by a wireless receiver of the garage door opener  14  and to cause the garage door opener  14  to open the garage door  18 . In step  420 , the transmitter  306  generates the control signal in response to the actuation command. In step  422 , the transmitter  306  transmits the control signal to the wireless receiver  16  of the garage door opener  14  in response to the command in order to cause the garage door to actuate. 
     Various sensors and combinations of sensor may be used by vehicle  10  to determine whether to provide a control signal to cause an actuation of the garage door in response to the data received from the sensor. As mentioned above, the sensors coupled to interface  302  may include an engine control unit (ECU)  310 , a field sensor  312 , an environment sensor  314 , an RF sensor  316 , a radar sensor  318 , a sonar sensor  320 , a camera  322 , a photoelectric sensor  324 , a global positioning system  326 , or any other type of sensor capable of being disposed in or on vehicle  10 . 
     In an exemplary embodiment, one or more of an ECU  310 , a field sensor  312 , and an environment sensor  314  may be used to assist processing electronics  304  in determining whether the vehicle engine is started. Further, any other vehicle system, component or sensor capable of providing data related to the state or condition of the engine may be coupled to interface  302  and configured to provide data to processing electronics  304  via interface  302  for determining whether vehicle engine is started. 
     ECU  310  may be coupled to interface  302  and configured to provide data with respect to the state, condition or operation of the vehicle&#39;s engine. The ECU  310  may be configured to sense whether the engine is started or sense conditions that would indicate that the engine is started, such as engine temperature or oil pressure. The data from ECU  310  is provided to processing electronics  304  via interface  302  and processed to determine whether vehicle engine is started. 
     Field sensor  312  may be coupled to interface  302  and configured to provide data with respect to the fields generated by the vehicle  10 . Field sensor may include magnetic sensors and inductive field sensors or any other type of field sensor capable of being disposed in or on vehicle  10 . When a vehicle engine is started there is a change in the magnetic and inductive fields produced by vehicle  10 , which can be detected by magnetic and inductive sensors. Field sensor  312  may be configured to sense the field changes and provide data to processing electronics  304  via interface  302  for determining whether vehicle engine is started. Processing electronics  304  may be configured to determine that the vehicle engine is started when the sensed fields exceed a threshold. Measured aspects of the field may include field strength, field direction, or other sensed field characteristics. Field sensor  312  may be part of a sensor kit that can be manually disposed in or on vehicle  10 , or vehicle  10  may come equipped from the manufacturer with field sensor  312 . Field sensor  312  may be a preexisting vehicle component, such as a vehicle compass. A vehicle compass may be configured to sense change in magnetic field when the engine is started and provide data to processing electronics  304  via interface  302  for determining whether vehicle engine is started. 
     Environment sensor  314  may be coupled to interface  302  and configured to provide data with respect to an sensed environmental condition. As discussed above, environment sensor may include an emissions sensor, a vibration sensor and a temperature sensor. Emission sensor may be configured to provide emissions data to processing electronics  304  via interface  302  to assist in determining whether the vehicle engine is started. Vibration sensor may be configured to provide vibration data to processing electronics  304  via interface  302  to assist in determining whether the vehicle engine is started. Temperature sensor may be configured to provide temperature data to processing electronics  304  via interface  302  to assist in determining whether the vehicle engine is started. 
     Furthermore, various sensors may provide data sufficient to also indicate whether vehicle  10  is in the garage or whether the garage door is closed. For example, emission levels detected above a certain level by an emission sensor may indicate not only that the engine is likely started, but that vehicle  10  is in an enclosed space (e.g., the garage) and that the garage door is closed. Thus, while it may be desirable to include other sensors to provide various additional data, in may be unnecessary when certain sensors are used by vehicle  10 . However, it may be desirable to receive data from various sensors to ensure that the garage door is properly actuated. For example, if data from ECU  310  were the only sensor used to determine whether the vehicle was started and no determination was required as to whether vehicle  10  is in the garage, then a vehicle that is started, either manually, remotely or automatically, outside the garage (e.g., in the driveway) would unnecessarily actuate the garage door. Furthermore, vehicle  10  started in the garage with the garage door open would unnecessarily close the garage door and create a potentially harmful environment inside the garage. Various sensors could be used in combination to provide more accurate or complete data. For example, ECU  310  could be used in conjunction with emission sensor. Emission sensor may be used to sense high emission levels and provide data indicating that undesirable environmental conditions are in a garage and that the garage door is closed. ECU  310  may provide data for determining that the vehicle&#39;s engine is started. 
     In an exemplary embodiment, one or more of an environment sensor  314 , an RF sensor  316 , a radar sensor  318 , a sonar sensor  320 , a camera  322 , a photoelectric sensor  324 , a global positioning system (GPS)  326 , or any other type of sensor capable of being disposed in or on vehicle  10  may be used to assist processing electronics  304  in determining whether the vehicle is in the garage and whether the garage door is closed. 
     Environment sensor  314  may be coupled to interface  302  and configured to provide data with respect to an sensed environmental condition. As discussed above, environment sensor may include an emissions sensor, a vibration sensor and a temperature sensor. 
     Emission sensor may be configured to provide emissions data to processing electronics  304  via interface  302  to assist in determining whether the vehicle  10  is in the garage. Emissions from vehicle  10  may include, hydrocarbons, Nitrogen oxides (NO x ), carbon monoxide (CO), carbon dioxide (CO 2 ), particulates, sulfur oxides (SO x ) and other air toxins. The emission sensor may be configured to sense at least one of these vehicle emissions to provide data to processing electronics  304  via interface  302  to assist in determining whether the vehicle is in an enclosed area, such as the garage. In an enclosed area, the concentration of emission levels will be higher than if the vehicle were out side. The emission sensor may be configured to provide a data to processing electronics  304  via interface  302 . Processing electronics  304  may be configured to determine that the vehicle is in the garage when the sensed emission level exceeds a threshold. The emission sensor may be configured to sense one or more of these vehicle emissions to provide data to processing electronics  304  via interface  302  to assist in determining whether the vehicle  10  is in a garage with a closed door. In a closed garage, the concentration of emission levels will be higher than if vehicle  10  were out side, or if vehicle  10  were in the garage with the garage door open. Ideally, the threshold is set to a level that is not harmful to people and animals. 
     The vibration sensor may include an acoustic sensor or other type of mechanical vibration sensor. When the vehicle is located in an enclosed area, such as the garage, the noise from the idle engine will appear louder than if it were outside. The noise from the engine is louder because the sound waves are reflected off the garage walls and ceiling back to the vehicle, whereas, outside the garage there are minimal reflections from the atmosphere and surrounding objects (e.g., buildings, trees). The vibration sensor may be configured to provide data to processing electronics  304  via interface  302  to assist in determining whether vehicle  10  is in the garage when the sensed vibrations from the reflected sound waves exceed a threshold. When vehicle  10  is located in a garage with the garage door closed, the noise from the started engine will appear louder than if it were outside or in the garage with the garage door open. The noise from the engine is louder because the sound waves are reflected off the garage walls, door and ceiling back to the vehicle, whereas, outside the garage there are minimal acoustic reflections from the atmosphere and surrounding objects (e.g., buildings, trees). The vibration sensor may be configured to be sensitive enough to detect differences in noise level when the garage door is closed as compared to open. The vibration sensor may be configured to provide data to processing electronics  304  via interface  302  to assist in determining whether the garage door is closed when the sensed vibrations from the reflected sound waves exceed a threshold. 
     The temperature sensor may be configured to monitor the ambient temperature outside of the vehicle. When the engine of vehicle  10  is started and running in an enclosed garage, the heat from the engine and exhaust increase the ambient temperature of the garage. The temperature sensor may be configured to provide data to processing electronics  304  via interface  302  to assist in determining whether vehicle  10  is in the garage when the sensed temperature exceeds a threshold. When the engine of vehicle  10  is started and running in a garage and the garage door closed, the heat from the engine and the exhaust trapped in the garage increase the ambient temperature of the garage. The temperature sensor may be configured to provide data to processing electronics  304  via interface  302  to assist in determining whether the garage door is closed when the sensed temperature exceeds a threshold. The thresholds for determining whether the vehicle is in the garage and whether the garage door is closed may be different thresholds. As discussed above, processing electronics may utilizes various means and methods to determine a baseline temperature for setting thresholds. Some factors in determining the baseline temperature may include time of year, time of day, location, historic weather patterns, and current outside temperature. Processing electronics may obtain data from a variety of sources, including an internal clock or calendar system, a navigational system or device and a server  1146 . 
     RF sensor  316  may be coupled to interface  302  and configured to provide data with respect to the surroundings of vehicle  10 . RF sensor  316  may be mounted on or built into a vehicle. Processing electronics  304  may be configured to use data received from RF sensor  316  via interface  302  to determine whether vehicle  10  is located in an enclosed area, such as a garage. RF sensor  316  may be used to determine distances to objects by providing data for measuring the strength of the reflections from objects resulting from a transmitted RF signal. RF sensor  316  may be configured to assist processing electronics  304  in determining distance by providing data for measuring the time from transmission to return of the reflection. Processing electronics  304  may be configured to determine distance to an object using the strength of the reflected signal and comparing that to the strength of the transmitted signal. Processing electronics  304  may be configured to use both time and signal strength to determine distance. The vehicle owner may also place RF reflectors or other kinds of RF ID tags in the garage to assist in determining that vehicle  10  is in the garage. Reflectors or RF ID tags may be beneficial in improving detection because certain materials used in construction may not serve as good RF reflectors. The reflectors or tags may also server to uniquely identify the garage, or even the particular stall in which vehicle  10  is parked. 
     Processing electronics  304  may be configured to use data received from RF sensor  316  via interface  302  to determine whether the garage door  18  is closed. RF sensor  316  may be used to assist processing electronics  304  in determining whether the garage door is closed by transmitting a signal in the direction of the garage door opening. If the garage door is closed, processing electronics  304  will be able to determine the distance from vehicle  10  to the garage door using the data received from RF sensor  316 . If the distance is below a threshold, processing electronics may determine that the garage door  18  is closed. If the garage door is open, the signal will pass through the garage door opening and reflect off objects outside the garage. The objects detected outside of the garage will appear relatively far away and processing electronics  304  will be able to determine that the door is open. RF sensor  316  may also be directed toward the ceiling to assist in determining whether the garage door is in an open or closed position. If the garage door is open, the door will be above vehicle  10  parked in the garage and the distance measured will be relatively small. If the garage is closed, the door will be behind vehicle  10  and the distance measured will be larger because the signal will reach the ceiling. The vehicle owner may also place RF reflectors or other kinds of RF ID tags on the garage door, or garage ceiling above the vehicle, to assist in determining whether the garage door is closed. The reflectors, or RF ID tags, may be beneficial in improving detection because certain materials used in construction may not serve as good RF reflectors. 
     Radar sensor  318  may be coupled to interface  302  and configured to provide data with respect to the surroundings of vehicle  10 . Radar sensor  318  may be mounted on or built into a vehicle. Processing electronics  304  may be configured to use data received from radar sensor  318  via interface  302  to determine whether vehicle  10  is located in an enclosed area, such as a garage. Radar sensor  318  may be configured to detect distances to objects. Data from radar sensor  318  may be used by processing electronics  304  to determine whether vehicle  10  is in the garage by detecting the distances from vehicle  10  to the garage walls. Processing electronics may also include a memory configured to store radar data (e.g., a “radar map” of the garage) and compare subsequent radar measurements with the stored data to determine whether vehicle  10  is in the garage. The vehicle owner may also place reflectors or other types of objects in the garage to allow the processing electronics  304 , using the radar sensor, to uniquely identify the garage area or to simply improve detection. The reflectors may be beneficial in improving detection because certain materials used in construction may not serve as good radar reflectors. 
     The radar signal emitted from radar sensor  318  may be adversely affected by the electromagnetic radiation of the engine, various electrical components, and wiring of vehicle  10 . Various known methods may be implemented to reduce, filter or offset these effects. Furthermore, the electromagnetic radiation will always be present if the measurements are taken while the engine is started. Thus, while the electromagnetic radiation may reduce the sensitivity of the radar sensor  318 , it may not cripple the ability of processing electronic  304  to perform its function of determining whether vehicle  10  is in a garage. Alternatively, radar sensor  318  may be configured to briefly turn on after vehicle  10  shuts down in order to avoid disturbance from the engine. If the last measurement taken indicated that vehicle  10  was in the garage, then it could be assumed that upon the next start up of the engine, before vehicle  10  is placed in motion, that vehicle  10  is still located in the garage. 
     Processing electronics  304  may be configured to use data received from radar sensor  318  via interface  302  to determine whether the garage door  18  is closed. Radar sensor  318  may be configured to detect distances to objects. Data from radar sensor  318  may be used by processing electronics  304  to determine whether the garage door is closed by transmitting a radar signal in the direction of the garage door opening. If the garage door is closed, processing electronics  304  will receive data indicating a distance from vehicle  10  to the closed garage door. If the distance determined is below a threshold, processing electronics  304  may determine that the garage door  18  is closed. If the garage door is open, the radar signal will pass through the garage door opening and reflect off objects outside the garage. The objects detected outside of the garage will appear relatively far away (e.g., above the threshold) and processing electronics  304  will be able to determine that the door is open. 
     The vehicle owner may also place reflectors or other types of objects on the garage door, or the portion of the garage ceiling covered by the garage door when in an open position, to enhance detection of a closed garage door. If the reflector or tag is placed on the door, then the processing electronics  304  may be able to determine the position of the door because the tag location would be above vehicle  10  when the door is open and behind vehicle  10  when the door is closed. The reflectors may be beneficial in improving detection because certain materials used in construction may not serve as good radar reflectors. Radar sensor  318  may also be directed toward the garage ceiling to assist in determining whether the garage door is in an open or closed position. When the garage door  18  is closed, the distance determine will be the distance to the ceiling and when the garage door  18  is open, the distance determined will be the distance to the garage door in open position. The distance to the garage door in open position will be less than the distance to the ceiling when the garage door is closed. Thus, processing electronics  304  may determine an open and closed garage door position when vehicle  10  is in the garage. Further, the inside of the garage door may include reflectors to enhance detection. Alternatively, the garage ceiling may include reflectors to enhance detection. 
     Sonar sensor  320  may be coupled to interface  302  and configured to provide data with respect to the surroundings of vehicle  10 . Sonar sensor  320  may be mounted on or built into a vehicle. Processing electronics  304  may be configured to use data received from sonar sensor  320  via interface  302  to determine whether vehicle  10  is located in an enclosed area, such as a garage. Sonar sensor  320  may be configured to detect distances to objects. Data from sonar sensor  320  may be used by processing electronics  304  to determine whether vehicle  10  is in the garage by detecting the distances from vehicle  10  to the garage walls. Processing electronics may also include a memory configured to store sonar data (e.g., a “sonar map” of the garage) and compare subsequent sonar measurements with the stored data to determine whether vehicle  10  is in the garage. The sonar signal emitted from sonar sensor  320  may be adversely affected by the acoustic vibrations, or other effects, from the engine. Various known methods may be implemented to reduce, filter or offset these effects. Furthermore, the noise from the engine will always be present if the measurements are taken while the engine is started. Thus, while the noise may reduce the sensitivity of the sonar sensor  320 , it may not cripple the ability of processing electronic  304  to perform its function of determining whether the vehicle  10  is in a garage. Alternatively, sonar sensor  320  may be configured to briefly turn on after vehicle  10  shuts down to avoid disturbance from the engine. If the last measurement taken indicated that vehicle  10  was in the garage, then it could be assumed that upon the next start up of the engine, before vehicle  10  is placed in motion, that vehicle  10  is still located in the garage. 
     Processing electronics  304  may be configured to use data received from sonar sensor  320  via interface  302  to determine whether the garage door is closed. Sonar sensor  320  may be configured to detect distances to objects. Data from sonar sensor  320  may be used by processing electronics  304  to determine whether the garage door is closed by transmitting a sonar signal in the direction of the garage door opening. If the garage door is closed, processing electronics  304  will receive data indicating a distance from vehicle  10  to the closed garage door. If the distance determined is below a threshold, processing electronics  304  may determine that the garage door  18  is closed. If the garage door is open, the sonar signal will pass through the garage door opening and reflect off objects outside the garage. The objects detected outside of the garage will appear relatively far away (e.g., above the threshold) and processing electronics  304  will be able to determine that the door is open. 
     Camera  322  may be coupled to interface  302  and configured to provide data with respect to the surroundings of vehicle  10 . Camera  322  may be a camera mounted on, or built into, the vehicle bumper and coupled to a display to provide the user with a bumper level perspective of the vehicle&#39;s surroundings. Camera  322  may include cameras mounted on, or built into, other portions of vehicle  10 . Camera  322  may provide data to processing electronics  304  via interface  302  to assist in determining whether vehicle  10  is located in the garage. Processing electronics  304  may be configured to process the data received from camera  322  using various pattern recognition and image processing techniques. Using various image processing techniques, processing electronics  304  may be able to identify and recognize certain aspects of the garage, such as color, shape, shading, brightness, darkness, contrasting colors, shape sizes, etc. The user may enhance the ability of processing electronics  304  to uniquely recognize the garage by including stickers, markers, objects or other items in the garage. 
     Camera  322  may provide data to processing electronics  304  via interface  302  to assist in determining whether the garage door is closed. Camera  322  may be positioned in the direction of the door in relation to the position of vehicle  10  parked in the garage. For example, a rear bumper camera may face the garage door if vehicle  64  enters the garage front first. Camera  322  may be configured to provide data to determine whether the garage door is closed by focusing in on the door or recognizing a characteristic of the door when the door is visible to the camera  322  (e.g., only visible in the closed position). The user may provide stickers, colors, patterns, symbols, markers, etc on the garage door to enhance the ability of camera  322  to provide data identifying a garage door position (e.g., open or closed). Camera  322  may also be directed toward the ceiling to assist in determining whether the door is open or closed. When the garage door is open the distance detected will be to the garage door positioned above vehicle  10  in the open position. The garage door  18  may be configured with stickers, colors, patterns, symbols, markers, etc., so that processing electronics  304  recognizes that the door is in the open position when camera  322  is directed toward the garage ceiling. When the garage door is closed the distance detected will be to the ceiling and processing electronics  304  will not see any stickers, colors, patterns, symbols, markers, etc. Thus, processing electronics, using camera  322 , will be able to determine that the garage door is closed. Alternatively, the stickers, colors, patterns, symbols, markers, etc., may be placed on the ceiling so that when the stickers, colors, patterns, symbols, markers, etc., are seen by processing electronics  304  using data from camera  322 , a determination that the garage door is closed may be made. Either the ceiling or the door may contain the markers, patterns, colors, etc., to enhance the determination of whether the door is closed. 
     Photoelectric sensor  324  may be coupled to interface  302  and configured to provide data with respect to the surroundings of vehicle  10 . Photoelectric sensor  324  may be mounted on or built into a vehicle  10 . Photoelectric sensors  324  may include sensors that use Infrared (IR), visible red, laser, UV or any other type of light. Similar to radar and sonar, photoelectric sensor  324  may be configured to detect distances to objects. Processing electronics  304  may be configured to use data received from photoelectric sensor  324  via interface  302  to determine whether vehicle  10  is located in an enclosed area, such as a garage. Data from photoelectric sensor  324  may be used by processing electronics  304  to determine whether vehicle  10  is in the garage by detecting distances from vehicle  10  to the garage walls. Processing electronics  304  may also include a memory configured to store distance measurements taken in the garage and to compare subsequent measurements with the stored measurements to determine whether vehicle  10  is likely in the garage. The vehicle owner may also place reflectors or other types of objects in the garage to allow the processing electronics  304 , using the photoelectric sensor, to uniquely identify the garage area or to simply improve detection. 
     Processing electronics  304  may be configured to use data received from photoelectric sensor  324  via interface  302  to determine whether the garage door is closed. Photoelectric sensor  324  may be used to assist in determining whether the garage door is closed by transmitting a signal in the direction of the garage door opening. If the garage door is closed, processing electronics  304  will receive data indicating a distance from vehicle  10  to the closed garage door. If the distance determined is below a threshold, processing electronics  304  may determine that the garage door  18  is closed. If the garage door is open, the signal will pass through the garage door opening and reflect off objects outside the garage. The objects detected outside of the garage will appear relatively far away (e.g., above the threshold) and processing electronics  304  will be able to determine that the door is open. The photoelectric sensor  324  may also be directed toward the ceiling to assist in determining whether the garage door is in an open or closed position. When the garage door  18  is closed, the distance determine will be the distance to the ceiling and when the garage door  18  is open, the distance determined will be the distance to the garage door in open position. The distance to the garage door in open position will be less than the distance to the ceiling when the garage door is closed. Thus, processing electronics  304  may determine an open and closed garage door position when vehicle  10  is in the garage. 
     The user may also use stickers, paint, reflectors, or other items in conjunction with the various types of photoelectric sensors. For example, the user could put special UV paint or stickers on the garage ceiling or garage door to reflect UV light from a UV sensor disposed in vehicle  10  to assist in determining whether the garage door is closed. If the UV sensor is directed toward the ceiling and the reflector is place on the ceiling, a closed garage door position may be detected if the reflector is identified as being above vehicle  10  (e.g., the garage door is not blocking the view of the reflector because the garage door is in the closed position). If the UV sensor is directed toward the ceiling and the reflector is place on the garage door, an open garage door position may be detected if the reflector is identified as being above vehicle  10  (e.g., the reflector is visible because the garage door is in the open position above the vehicle). If the UV sensor is directed toward the garage door opening and the reflector is place on the garage door, a closed garage door position may be detected if the reflector is identified (e.g., the reflector is visible only when the garage door is in the closed position). Other types of light signals and corresponding reflective items (e.g., stickers, paint, reflectors) could be used in various configurations to assist processing electronics  304  in determining whether the door is closed. 
     Global Positioning System (GPS)  326  may be coupled to interface  302  and configured to provide data with respect to the location of vehicle  10 . GPS  326  may be mounted on or built into a vehicle. Processing electronics  304  may be configured to use data received from GPS  326  via interface  302  to determine whether vehicle  10  is located in the garage. GPS  326  may be configured to assist in determining the current location of vehicle  10  and to store locations of interest. Alternatively, locations of interest may be stored in memory coupled to processing electronics  304 . For purposes of determining whether vehicle  10  is in the garage, the location of interest may be the location of the garage or the location of the garage opening. The location of the garage opening may be beneficial to use because GPS  58  may not be able to communicate with satellites while in the garage. GPS  58  and/or processing electronics  304  may be configured to determine that vehicle  10  is in the garage when vehicle  10  reaches the opening of the garage door (may be a location of interest) and then loses the communication signal while the vehicle is still started. GPS  58 , alone or in conjunction with other vehicle systems coupled processing electronics  304  may be able to determine the speed, the acceleration/deceleration and direction of vehicle  10  at the opening of the garage door to determine where vehicle  10  would come to rest. GPS  58  and/or processing electronics  304  may be configured to determine that vehicle  10  is in the garage using other techniques, such as dead reckoning, which is used to estimate the current vehicle location when a GPS signal is lost or unavailable. Dead reckoning may utilize components, such as the vehicle compass system, the speedometer and the odometer. When the GPS signal is lost, dead reckoning may use the compass and speed/distance to approximate a location. 
     While the different types of sensors and systems for sensing have been discussed individually, it is to be understood that the sensors and systems may be used in various combinations to determine whether vehicle  10  is in the garage and whether the garage door is closed. For example, GPS  326  may be used in conjunction with photoelectric sensor  324  and environment sensor  314  to increase the probability of an accurate determination by processing electronics  304 . Other types of sensors may be used by vehicle  10  to assist in determining whether the vehicle  10  is in the garage and whether the garage door is closed. 
     A determination by processing electronics  304  to provide an actuation command may be made using data from one or more sensors coupled to interface  302 . The number of sensors needed to make a proper determination to provide an actuation command will depend upon which types of sensors, or combinations of sensors, are used. Furthermore, the number of sensors will depend on how sensitive the various types of sensors are. For example, processing electronics  304  may be configured to provide an actuation command in response to data from an environment sensor detecting emission levels above a threshold. If emission levels are above a threshold, it may be assumed that vehicle  10  is started, that vehicle  10  is located in the garage, and that the garage door is closed. Thus, an emission sensor may be the only sensor required to determine whether an actuation command may be generated. Other sensors may be used to ensure that the garage door is properly actuated, such as GPS  326 , to assist in determining that the vehicle is in the garage, or a proximity sensor (radar sensor  318 , sonar sensor  320 , photoelectric sensor  324  or RF sensor  316 ) configured to assist in determining that the garage door  18  is closed. 
     With respect to vibration sensor, it may not be appropriate to determine whether to provide an actuation command based solely on the data from the vibration sensor if the garage is located near an airport, railway, is in a location with frequent earthquakes or located near a highway. However, under some circumstances it may be appropriate if, for example, the vibration sensor were sensitive enough to be able to provide data that processing electronics could use to distinguish between vibrations in a garage with the garage door closed and a garage with the garage door open. Other sensors may be required in addition to ECU  310  to assist processing electronics  304  in determining whether vehicle  10  is located in a garage and whether the garage door is closed. Activation of the garage door as a result of solely using data provided by ECU  310  (e.g., used to determine whether the engine is started) may result in actuating the garage door when vehicle  10  is idling in the driveway and may even close the garage door on vehicle  10  when it is started in the garage, thereby resulting in a potentially harmful situation. Thus, additional sensors, such as radar, sonar, photoelectric, RF, GPS, etc., would be helpful in determining whether to open the garage door. Various combinations of sensors could be used to assist in determining whether an actuation command should be provided for actuation of the garage door  18 . 
     Emergency Actuation Determined by the Garage Door Opener 
     Referring to  FIG. 5 , in an exemplary embodiment, garage door opener  14  may be configured to open a garage door  18  and may include a wireless receiver for receiving a control signal. Garage door opener  14  may include an interface  502 , processing electronics  504  and a wireless receiver  16 . Interface  502  may be coupled to at least one sensor  506  and configured to receive data from at least one sensor(s)  506 . Processing electronics  504  may be coupled to interface  502  and configured to receive the data from interface  502 . Sensor  506  may be coupled to the interface  502  via a physical or wireless communication connection. If the communication connection is wireless, interface  502  may include wireless electronics (e.g., transmitter and receiver) to communicate with sensor  506 . Interface  502  and sensor  506  may be configured to communicate wirelessly using any type of wireless communication. For example, interface  502  and sensor  506  may be configured to communicate using an IEEE 802.11 connection, and IEEE 802.15 connection, a Bluetooth® connection, a WiFi connection, a WiMax connection, cellular signal, a signal using Shared Wireless Access Protocol-Cord Access (SWAP-CA) protocol, or any other type of RF or wireless signal. An IEEE 802.15 connection includes any wireless personal area networks (WPAN), such as ZigBee, Z-Wave, Bluetooth, UWB, and IrDA. Processing electronics  504  may be configured to use the data to determine whether an environmental condition exists, whether a vehicle engine is started, whether vehicle  10  is in the garage and whether the garage door is closed. Processing electronics  504  may be configured to provide a command to the garage door opener  14  to actuate the garage door based on the determination of whether an environmental condition exists. Further, processing electronics  504  may be configured to provide a command to the garage door opener  14  to actuate the garage door based on the determination of whether vehicle  10  is in the garage and whether the garage door is closed. In response to the command signal, the garage door is opened. Alternatively, processing electronics  504  may be provided outside of garage door opener  14  as one or more separate units or processing electronics  504  may be provided in sensor  506 . In this embodiment, processing electronics  504  may be coupled to the interface  502  via a physical or wireless communication connection. If the communication connection is wireless, interface  502  may include wireless electronics (e.g., transmitter and receiver) to communicate with sensor  506 . 
     Furthermore, garage door opener  14  may be configured to receive control signals from remote one or more remote transmitters. For example, vehicle  10  may include a transmitter  206  configured to provide an appropriately formatted control signal to the wireless receiver  16 . The control signal may be configured to cause the garage door opener  14  to actuate the garage door  18 . 
     Referring to  FIG. 6 , various types of sensors may be coupled to interface  602  of garage door opener  14 . Interface  602  is coupled to processing electronics  604  and communicates data from the various sensors to processing electronics  604 . Transmitter  606  is coupled to processing electronics  604  and may be configured to provide data to vehicle  10 . Wireless receiver  608  is coupled to processing electronics  604  and configured to receive an appropriately formatted control signal from a remote transmitter  206 . 
     The sensors coupled to interface  602  may include an environment sensor  610  (e.g., emission sensor, vibration sensor, temperature sensor), a field sensor  612 , an emission pattern sensor  614 , a radar sensor  616 , a sonar sensor  618 , an RF sensor  620 , a capacitive sensor  622 , a camera  624 , a photoelectric sensor  626 , a pressure sensor  628 , a memory  630 , or any other type of sensor capable of being disposed in a garage or garage door opener  14 . One or more of the sensors may be disposed in the garage and configured to provide data to processing electronics  604  via interface  602  for determining whether an engine is started, whether the vehicle is in the garage and whether the garage door is closed. Alternatively, one or more sensors may provide data to processing electronics  604  for determining whether an environmental condition exists. Various sensors may be better suited for providing data for assisting in particular determinations. For example, field sensor  612  and environment sensor  610  may be ideally suited for providing data for determining whether an engine is started; environment sensor  610 , field sensor  612 , emission pattern sensor  614 , radar sensor  616 , sonar sensor  618 , RF sensor  620 , capacitive sensor  622 , camera  624 , photoelectric sensor  626 , or pressure sensor  628  may be ideally suited for providing data for determining whether vehicle  10  is in the garage; environment sensor  610 , field sensor  612 , radar sensor  616 , sonar sensor  618 , RF sensor  620 , capacitive sensor  622 , camera  624 , photoelectric sensor  626 , or memory  630  may be ideally suited for providing data for determining whether the garage door is closed. 
     Referring to  FIGS. 6 and 7A , in an exemplary embodiment, environment sensor  610  is coupled to interface  602 . In step  700 , processing electronics  604  disposed in garage door opener  14  receives data from environment sensor  610  via interface  602  and, in step  702 , uses the received data to determine whether an environmental condition exists. If the environmental condition does not exist, the processing electronics continues to receive and process data. If the data indicates that an environmental condition exists, then, in step  704 , processing electronics  604  provides a command to cause the garage door opener to open the garage door  18 . The command is provided based on the determination of whether the environmental condition exists. In step  706 , the garage door opener  14  opens the garage door  18  in response to the command. 
     As illustrated in  FIG. 7A , vehicle  10  may be configured use an environment sensor  610  to sense an environmental condition and provide a command to cause an actuation the garage door in response to the sensed condition. Environment sensor  610  may include at least one of an emission sensor, a vibration sensor and a temperature sensor. A sensed environmental condition may indicate that a vehicle engine is started, that vehicle  10  is in the garage, and that the garage door  18  is closed. For example, using an emission sensor, an environmental condition may be sensed when emission levels exceed a threshold. High emission levels would likely indicate that the vehicle engine is started because emissions would otherwise be undetectable if the vehicle engine was off (assuming no other engines in the garage were started). High emission levels would likely indicate that the vehicle was in the garage, where emissions would be at least partially contained. High emission levels would likely indicate that the garage door is closed because the high emission levels would be the result of little or no ventilation. Thus, data relating to an environmental condition may be all that is necessary to determine whether to actuate the garage door. 
     Environment sensor  610  may be configured to monitor various aspects of the garage environment to determine whether a combustion engine has been started, such as vehicle emissions, vibrations or temperature. Emission sensor may be disposed in the garage and configured to sense emission levels from vehicle  10 . Emissions from a combustion engine may include, hydrocarbons, Nitrogen oxides (NO x ), carbon monoxide (CO), carbon dioxide (CO 2 ), particulates, sulfur oxides (SO x ) and other air toxins. An emission sensor may be configured to sense one or more of these emissions to assist processing electronics  604  in determining whether the engine has been started. In an enclosed area, emission levels will be higher than if the engine were out side. Processing electronics  604  may be configured to determine that vehicle engine is started if emissions exceed a threshold. Ideally, the threshold is set to a level that is not harmful to people and animals. Vibration sensor may include an acoustic sensor or other type of mechanical vibration sensor. When the engine is located in a garage, the noise from the engine will appear louder than if it were outside because the sound waves are reflected off the garage walls and ceiling. Processing electronics  604  may be configured to determine that vehicle engine is started if vibration levels exceed a threshold. Temperature sensor may be configured to assist processing electronics  604  in monitoring the temperature inside the garage. When the engine is started and running in the garage, the heat from the engine and the exhaust increase the garage temperature. Processing electronics  604  may be configured to determine that vehicle engine is started if temperature levels exceed a threshold. Temperature thresholds may be determined by establishing a baseline temperature as described above. 
     Field sensor  612  may include a magnetic field sensor, an inductive field sensor, or any other type of field sensor disposed in the garage. When an engine is started there is a change in the surrounding magnetic and inductive fields that can be sensed by magnetic and inductive sensors. Processing electronics  604  may be configured to determine that vehicle engine is started if the sensed field changes or the fields strengths exceed a threshold. Field sensor  612  may be configured to measure field strength, field direction, or other field characteristics. Field sensor  612  may be part of a sensor kit provided as an accessory or add-on to garage door opener  14 , or garage door opener  14  may come equipped from the manufacturer. Field sensor  612  may be a preexisting component on garage door opener  14  or may be disposed in the garage an coupled to the garage door  14 . One such component that could be integrated into garage door opener  14 , or added by a user, is a compass or compass system. A compass system may sense change in the magnetic field when the engine is started and may be configured to provide data to processing electronics  604  for determining when the magnetic field increases above a threshold. 
     Processing electronics  604  may be configured to identify differences in the received data to determine whether the field levels (e.g., magnetic fields, inductive fields) indicate that the vehicle engine is started and that the vehicle is in the garage. Processing electronics  604  may be configured with predetermined thresholds related to the fields. The thresholds may be established by the manufacturer or during setup and configuration of the system. 
     Further, processing electronics  604  may be configured to identify differences in the received data to determine whether the environmental level (e.g., emissions, vibration or temperature) indicates that the vehicle engine is started, that the vehicle engine is started and the vehicle is in the garage, or that the vehicle engine is started, in the garage and the garage door is closed. With respect to temperature, the thresholds may be set from a varying baseline temperature. The varying baseline temperature may be used to account for different seasons, times of the day or other changes in weather patterns. Processing electronics  604  may use various means and methods to establish a baseline temperature from which thresholds may be determined. For example, processing electronics  604  may be configured to access the internet via a home wireless or wired network to obtain current outside temperature information. Location information (e.g., zip code) may be provided when the system is configured. Alternatively, processing electronics may be coupled to a temperature sensor located outside of the garage for detecting the current outside temperature. 
     Additional sensors may be used in conjunction with environment sensor  610  to assist processing electronics  604  in determining whether the vehicle  10  is started, whether vehicle  10  is in the garage and/or whether the garage door is closed. 
     Alternatively, processing electronics  604  may be configured to simply detect a harmful, or near harmful, condition rather than attempting to determine that the vehicle is started and in the garage with the garage door closed. If emission levels or temperature levels in the garage exceed a threshold, the garage door  18  may be actuated irrespective of whether the vehicle engine is started. For example, a combustion engine electrical power generator, or a vehicle without emergency garage door actuation capability, may be started in the same garage as vehicle  10 . If processing electronics  604  sense emission or temperature levels above the thresholds, then processing electronics  604  may be configured to provide a command to the garage door opener  14  to open the garage door  18 . 
     Referring to  FIGS. 6 and 7B , in an exemplary embodiment, interface  602  is coupled to at least one sensor. In step  708 , processing electronics  604  disposed in the garage or integrated into the garage door opener receives first data from a sensor (e.g., field sensor  612 , environment sensor  610 ) coupled to interface  602 , and in step  712 , determines whether the vehicle engine is started based on the first data received from the sensor. If processing electronics  604  determines that the engine has not started then processing electronics  604  continues to receive and process data. In step  710 , processing electronics  604  disposed in the garage, or integrated in to the garage door opener  14 , receives second data from one or more sensors coupled to interface  602 . In step  714 , processing electronics  604  determines whether the vehicle  10  is in the garage and whether the garage door is closed based on at least the second data from the sensor. If processing electronics  604  determines that the vehicle  10  is not in the garage or that the garage door  18  is open then processing electronics continues to receive and process data. In step  716 , processing electronics  604  provides a command to cause the garage door opener  14  to open the garage door  18  based on whether the vehicle  10  is started, whether the vehicle  10  is in the garage and whether the garage door  18  is closed. In step  718 , the garage door opener  14  opens the garage door  18  in response to the command. 
     Various sensors and combinations of sensors may be used by processing electronics of garage door opener  14  to determine whether to provide a command to cause actuation of the garage door  18  in response to the data received from the sensors. As mentioned above, the sensors coupled to interface  602  may include the an engine is started. Referring to  FIG. 6 , garage door opener  14  may include environment sensor  610 , field sensor  612 , emission pattern sensor  614 , radar sensor  616 , sonar sensor  618 , RF sensor  620 , capacitive sensor  622 , camera  624 , photoelectric sensor  626 , or pressure sensor  628 , memory  630  or any other type of sensor capable of being disposed in the garage or integrated into garage door opener  14 . 
     In an exemplary embodiment, environment sensor  610  may be coupled to interface  602  and configured to provide data with respect to an sensed environmental condition. As discussed above, environment sensor may include an emissions sensor, a vibration sensor and a temperature sensor. Emission sensor may be configured to provide emissions data to processing electronics  604  via interface  602  to assist in determining whether the vehicle engine is started. Vibration sensor may be configured to provide vibration data to processing electronics  604  via interface  602  to assist in determining whether the vehicle engine is started. Temperature sensor may be configured to provide temperature data to processing electronics  604  via interface  602  to assist in determining whether the vehicle engine is started. 
     Environment sensor  610 , disposed in the garage may be coupled to interface  602  and configured to provide data to processing electronics  604  to assist in determining whether the vehicle  10  is in the garage while the engine is started. As discussed above, environment sensor may include an emissions sensor, a vibration sensor, and a temperature sensor. The emission sensor may be configured to sense at least one engine emission. Processing electronics  604  may be configured to determine that the vehicle is in the garage when the sensed emission level exceeds a threshold. The emission sensor may be configured to sense at least one engine emission to determine whether the garage door is closed while the engine is running in the garage. If the garage door is closed while the engine is running in the garage the emission levels will be higher than if the garage door were open. Processing electronics  604  may be configured to determine that the vehicle is started in the garage with the garage door closed when the sensed emission level exceeds a threshold. Ideally, the one or more thresholds are set to levels that are not harmful to people and animals. 
     The vibration sensor, as discussed above, may include an acoustic sensor or other type of mechanical vibration sensor. When the engine is started in the garage, the noise from the engine will be detectable by the vibration sensor disposed in the garage. Processing electronics  604  may be configured to determine that the vehicle is started when the sensed vibration level exceeds a threshold. Processing electronics  604  will be able to determine that the vehicle is located in the garage, which is where the vibration sensor is disposed, when the sensed vibration level exceeds a threshold. Further, the sensed vibrations may be greater when the garage door is closed, as opposed to open, while the engine is started in the garage. Processing electronics  604  may be configured distinguish between the vibration levels of a closed garage and an open garage. Processing electronics  604  may be configured to determine that the garage door is closed when the sensed vibration level exceeds a threshold. Processing electronics  604  may use various means and methods to establish a baseline temperature from which thresholds may be determined. For example, processing electronics  604  may be configured to access the internet via a home wireless or wired network to obtain current outside temperature information. Location information (e.g., zip code) may be provided when the system is configured. Alternatively, processing electronics may be coupled to a temperature sensor located outside of the garage for detecting the current outside temperature. 
     The temperature sensor may be configured to monitor the temperature of the garage. When the engine of vehicle  10  is started and running in the garage, the heat from the engine and exhaust increase the temperature of the garage. Processing electronics  604  may be configured to determine that the vehicle  10  is started when the sensed temperature level exceeds a threshold. Processing electronics  604  may be configured to determine that the vehicle is located in the garage, which is where the temperature sensor is disposed, when the sensed temperature level exceeds a threshold. When the engine of vehicle  10  is started and running in a garage and the garage door is closed, the heat from the engine and the exhaust trapped in the garage increase the temperature in the garage. The temperature sensor may be configured to provide data to processing electronics  304  via interface  302  to assist in determining whether the garage door is closed when the sensed temperature exceeds a threshold. The thresholds for determining whether the vehicle is started, whether the vehicle is in the garage and whether the garage door is closed may be different thresholds. As discussed above, processing electronics may utilizes various means and methods to determine a baseline temperature for setting thresholds. Processing electronics may obtain data from a variety of sources, including an internal clock or calendar system, a navigational system or device and a server  1146 . 
     Field sensor  612  may be coupled to interface  602  and configured to provide data with respect to the field levels in the garage. Field sensor  612  may include a magnetic field sensor, inductive field sensor, or any other type of field sensor capable of being disposed in the garage. The effect of the presence of vehicle  10  in the garage on the fields in the garage may be sufficient to assist processing electronics  604  in determining whether vehicle  10  is in the garage. The magnetic and/or inductive field sensors may be placed anywhere in the garage, including the garage ceiling, walls or floor, the garage door opener  14  or the garage door  14 . In addition to changing when the vehicle is present in the garage, the magnetic and inductive fields in the garage will change when vehicle  10  is started. The differences in the magnetic and inductive fields when the vehicle is started and off may be significant enough to allow processing electronics  604  to determine whether the engine in running. In either case (started or off), field sensor  612  may be able to detect that vehicle  10  or engine is in the garage. 
     Processing electronics  604  may be configured to determine that the vehicle  10  is started when the sensed field level exceeds a threshold. If field sensor  612  is not sensitive enough to detect the presence of vehicle  10  when turned off, the processing electronics  604  may be configured to recognize patterns of change in the magnetic and inductive fields when the engine is started and turned off. The change in magnetic and inductive fields may be noticeably different at start up of the engine as compared to turn off. Processing electronics  604  may see a sharp upward spike in field strength during ignition of the engine indicating that the engine is being started and a steep drop off in field strength with no upward spike when the engine is turned off. If processing electronics  604  detects that the engine has been turned off, then processing electronics  604  may assume that the vehicle  10  is located in the garage. If processing electronics  604  detects that there has been a start up of the engine and then a steady reduction in field strength, then processing electronics  604  may assume that vehicle  10  was started in the garage and then left the garage. Thus, processing electronics  604  configured to receive data from field sensor  612  via interface  602  may be able to determine whether vehicle  10  is in the garage based on the detected patterns of change in the garage field. 
     Emission pattern sensor  614  may be coupled to interface  602  and configured to provide data with respect to the patterns of emission levels in the garage. Emission pattern sensor  614  may be disposed anywhere in the garage or built into garage door opener  14 . Emission patterns vary for starting up and shutting down an engine. If the detected emission pattern indicates that the vehicle  10  has started up and then the emissions stopped, the processing electronics  604  may assume that the vehicle  10  started and left the garage. If the detected emission pattern indicates that the vehicle  10  shut down and no more emissions have been detected since, the processing electronics  604  may assume that the vehicle  10  is still located in the garage. 
     Radar sensor  616  may be coupled to interface  602  and configured to provide data with respect to the surroundings inside the garage. Radar sensor  616  may be disposed anywhere in the garage or built into garage door opener  14 . Processing electronics  604  may be configured to use data received from radar sensor  616  via interface  602  to determine whether vehicle  10  is located in the garage. In particular, vehicle  10  may be easy to detect in the garage because of its size and reflective material. Indeed, processing electronics  604  may be configured to recognize a particular vehicle based on its size. Furthermore, radar sensor  616  may be directed toward locations in the garage where vehicle  10  will likely be parked when vehicle  10  is in the garage. The vehicle owner may also place reflectors or other types of objects on the vehicle  10  to allow the processing electronics  604  to uniquely identify the vehicle  10 , or to simply improve detection. Alternatively, the user may place objects or reflectors in such a way that the object or reflector will at least be partially blocked from detection by processing electronics  604  when the vehicle  10  is in the garage. For example, radar sensor  616  may be mounted on the ceiling and directed toward the garage floor. The garage floor may be include a marker below the radar sensor  616  and in the location where the vehicle  10  parks in the garage. When vehicle  10  is in the garage, radar sensor  616  will not be able to detect the reflector and processing electronics  604  may be able to determine that vehicle  10  is in the garage. When vehicle  10  is not in the garage, radar sensor  616  will detect the reflector and processing electronics  604  may be able to determine that vehicle  10  is not in the garage. 
     The radar signal used for detecting the vehicle  10  may be adversely affected by the electromagnetic radiation caused by a started engine. However, the disturbance caused by the engine may be used by processing electronics  604  to identify the presence of the vehicle  10  in the garage. The disturbance may also be used to determine that the vehicle  10  is started in the garage. Processing electronics  604  may be coupled to a memory to store disturbance patterns caused by vehicle  10  and other engines that may be used in the garage, such as a combustion engine electrical power generator or other vehicles, in order to determine which engine is started. 
     Processing electronics  604  may be configured to use data received from radar sensor  616  via interface  602  to determine whether the garage door  18  is closed. Radar sensor  616  may be configured to detect distances to objects. Data from radar sensor  616  may be used by processing electronics  604  to determine whether the garage door is closed by transmitting a radar signal in the direction of the garage door opening. Radar sensor  616  may be disposed on the garage walls, ceiling, or floor, the garage door opener, or the garage door. Furthermore, various types of reflectors, objects or other items may be disposed in the garage to improve detection of a closed garage door. For example, radar sensor  616  may be affixed to a garage wall and directed toward the garage door opening and configured to transmit a radar signal in the direction of the garage opening. If the garage door  18  is closed, processing electronics  604  will be able to determine the distance from radar sensor  616  to the closed garage door  18 . If the garage door  18  is open, the transmitted radar signal will pass through the garage door opening and reflect off objects outside the garage. The objects detected outside of the garage will appear relatively far away from radar sensor  616  and processing electronics  604  will be able to determine that the garage door  18  is open. A reflector may be affixed to the garage door  18  to enhance detection of the garage door  18  position. 
     Sonar sensor  618  may be coupled to interface  602  and configured to provide data with respect to the surroundings inside the garage. Sonar sensor  618  may be disposed anywhere in the garage or built into garage door opener  14 . Like radar, sonar sensor  618  may be used to detect distances to objects. Processing electronics  604  may be configured to use data received from sonar sensor  618  via interface  602  to determine whether vehicle  10  is located in the garage. Sonar sensor  618  may be used to assist processing electronics  604  in determining whether the vehicle  10  is in the garage by detecting the location of large objects in the garage. Processing electronics  604  may be coupled to a memory configured to store a data relating to the objects in the garage (e.g., a “sonar map” of the garage) and compare subsequent measurements with the stored data to determine whether the vehicle  10  is in the garage. In particular, vehicle  10  may be easy to detect in the garage because of its size and reflective material. Indeed, processing electronics  604  may be configured to recognize a particular vehicle based on its size. Furthermore, sonar sensor  618  may be directed toward locations in the garage where vehicle  10  will likely be parked when vehicle  10  is in the garage. The vehicle owner may also place reflectors or other types of objects on the vehicle  10  to allow the processing electronics  604  to uniquely identify the vehicle  10 , or to simply improve detection. Alternatively, the user may place objects or reflectors in such a way that the object or reflector will at least be partially blocked from detection by processing electronics  604  when the vehicle  10  is in the garage. The sonar signal used for detecting an engine may be adversely affected by the acoustic vibrations from a started engine. However, the disturbance caused by the started engine may be used by processing electronics  604  to identify the presence of the vehicle  10  in the garage. The disturbance may also be used by processing electronics  604  to determine that the vehicle  10  is started in the garage. Processing electronics  604  may be coupled to a memory to store disturbance patterns caused by vehicle  10  and other engines that may be used in the garage, such as a combustion engine electrical power generator or other vehicles, in order to determine which engine is started. 
     Processing electronics  604  may be configured to use data received from sonar sensor  618  via interface  602  to determine whether the garage door  18  is closed. Sonar sensor  618  may be configured to detect distances to objects. Data from sonar sensor  618  may be used by processing electronics  604  to determine whether the garage door is closed by transmitting a sonar signal in the direction of the garage door opening. Sonar sensor  618  may be used by processing electronics  604  to determine whether a garage door  18  is open in much the same way as radar sensor  616 . Sonar sensor  618  may be disposed on the garage walls, ceiling, or floor, the garage door opener, or the garage door. Furthermore, various types of reflectors, objects or other items may be disposed in the garage to improve detection of a closed garage door. For example, sonar sensor  618  may be affixed to a garage wall and directed toward the garage door opening (or the garage door in the closed position) and configured to transmit a sonar signal in the direction of the garage opening. If the garage door is closed, the processing electronics  604  will be able to determine the distance from sonar sensor  618  to the closed garage door  18 . If the garage door is open, the sonar signal will pass through the garage door opening and reflect off objects outside the garage. The objects detected outside of the garage will appear relatively far away and the processing electronics  604  will be able to determine that the garage door  18  is open. A reflector may be affixed to the garage door to enhance detection of the garage door position. 
     RF sensor  620  may be coupled to interface  602  and configured to provide data with respect to the surroundings of vehicle  10 . RF sensor  620  may be disposed any where in the garage or integrated into garage door opener  18 . Processing electronics  604  may be configured to use data received from RF sensor  620  via interface  302  to determine whether vehicle  10  is in the garage. Radio Frequency (RF) sensor  620  may be used by processing electronics  604  to determine distances to objects by measuring the reflections resulting from a transmitted RF signal. Processing electronics  604  may be configured to use RF sensor  620  to determine distance to objects by measuring the time from transmission of the RF signal to the return of the RF reflection. Processing electronics may be configured to used RF Sensor  620  to determine distance by measuring the strength of the reflected signal and comparing the reflected signal strength to the strength of the transmitted signal. Processing electronics  604  may also be configured to use both time and signal strength to determine distance. RF sensor  620  may be disposed anywhere in the garage, including the garage ceiling, walls or floor, the garage door opener and the garage door. RF reflectors or other kinds of RF ID tags may be placed on the vehicle  10  to assist in uniquely identifying the vehicle  10  or to simply assist in determining that the vehicle  10  is in the garage. The reflectors or tags may also serve to uniquely identify the garage or even the garage stall in which vehicle  10  is parked. An RF sensor  620  may be disposed in each garage stall to identify which stall is occupied. RF reflectors  620  may be disposed in the garage such that when vehicle  10  is in the garage, the RF reflector  620  is partially obstructed by vehicle  10  to provide an indication to processing electronic  604  that vehicle  10  is in the garage. When the RF reflector is visible, the processing electronics may determine that vehicle  10  is not in the garage. 
     Processing electronics  604  may be configured to use data received from RF sensor  620  via interface  602  to determine whether the garage door  18  is closed. RF sensor  620  may be disposed anywhere in the garage, including the garage ceiling, walls or floor, the garage door opener  14  and the garage door  18 . For example, RF sensor  620  may be affixed to the garage wall, directed toward a garage door opening and configured to transmit an RF signal. If the garage door is closed, the processing electronics  604  will be able to determine the distance to the closed garage door. If the garage door is open, the signal will pass through the garage door opening and reflect off objects outside the garage. The objects detected outside of the garage will appear relatively far away and processing electronics  604  will be able to determine that the garage door is open. RF reflectors, or other kinds of RF ID tags, may be placed any where in the garage, including the garage door, walls and ceiling, to enhance detection of the position of the garage door  18 . For example, RF sensor  620  may be affixed to the garage ceiling above the garage door when in open position, directed toward the garage floor, and configured to transmit an RF signal. A reflector may be disposed on the outside of the garage door  18  to enhance detection of the garage door in the open position. If the garage door is closed processing electronics  604  will not detect the reflector and the distance determined will to the top of the vehicle  10  or the garage floor. If the garage door is open, processing electronics  604  may be able to detect the reflector and the distance determined by processing electronics  604  will be to the garage door in open position. The distance to the garage door in open position will be less than the distance to the top of the vehicle or garage floor. Thus, the processing electronics  604  will be able to determine the position of the garage door  18 . The reflectors or tags may also serve to uniquely identify a particular garage door if there are multiple garage doors. If a separate RF sensor  620  is used for each garage door in a multi door garage, then each garage door may be uniquely identified by processing electronics  604  using its corresponding RF sensor. 
     Capacitive sensor  622  may be coupled to interface  602  and configured to provide data with respect to the presence of vehicle  10  in the garage. Sonar sensor  618  may be disposed anywhere in the garage or built into garage door opener  14 . Processing electronics  604  may be configured to use data received from capacitive sensor  622  via interface  602  to determine whether vehicle  10  is located in the garage. Capacitance can be measured between two conductive surfaces that are within proximity to one another. Capacitive sensor  124  may be configured to provide capacitance data to processing electronic  604  to measure the capacitance between an electrode (e.g., conductive plate) disposed in the garage and vehicle  10 . As vehicle  10  enters the garage and approaches the electrode, the capacitance measured between vehicle  10  and the electrode increases. Processing electronics  604  may be configured to determine that the vehicle  10  is in the garage when the measured capacitance exceeds a predetermined threshold. The electrode in the garage may be disposed on the garage wall facing vehicle  10  as it enters the garage, or it may be positioned above the location where vehicle  10  parks in the garage. Alternatively, the electrode may be integrated into the garage floor or it may be a mat that the vehicle parks on top of in the garage. Alternatively, the electrode may be integrated into the garage door so that the electrode is above vehicle  10  when vehicle  10  is entering the garage and behind vehicle  10  when the garage door closes. Different capacitance thresholds could be used for up and down positions to further determine whether the garage door is open or closed when vehicle  10  is in the garage. 
     Camera  624  may be coupled to interface  602  and configured to provide data with respect to the surroundings inside the garage. Camera  624  may be mounted on, or built into, the garage door opener  14 , the garage door, the garage ceiling, or any other portion of the garage. Camera  624  may provide data to processing electronics  604  via interface  602  to assist in determining whether the vehicle  10  is located in the garage. Processing electronics  604  may be configured to process the data received from camera  624  using various pattern recognition and image processing techniques. Using various image processing techniques, processing electronics  604  may be able to recognize the vehicle due to its large size. The recognizable aspects of the vehicle may include color, shape, shading, brightness, darkness, contrasting colors, size, etc. The user may enhance the ability of processing electronics  604  to uniquely recognize that the vehicle  10  is in the garage by including stickers, markers, objects or other items on vehicle  10 . Alternatively, the user may enhance the ability of processing electronics  604  to uniquely recognize that the vehicle  10  is in the garage by including stickers, markers, objects or other items in the garage, such that when the vehicle  10  is in the garage the marker is at least partially blocked from view by the vehicle  10 . For example, camera  624  may be mounted on the ceiling and directed toward the garage floor. The garage floor may be include a marker below the camera  624  and in the location where the vehicle  10  parks in the garage. When vehicle  10  is in the garage, camera  624  will not be able to see the marker and processing electronics  604  may be able to determine that vehicle  10  is in the garage. When vehicle  10  is not in the garage, camera  624  will see the marker and processing electronics  604  may be able to determine that vehicle  10  is not in the garage. 
     Camera  624  may provide data to processing electronics  604  via interface  602  to assist in determining whether the garage door is closed. Camera  624  may be configured to process the received data using various pattern recognition and image processing techniques. Using various image processing techniques, processing electronics  604  may be able to recognize certain aspects of the garage that would indicate that the garage door is closed. For example, if the image is dark but it is day time, processing electronics  604  may determine that the reason the garage is dark during the day time is because the garage is closed. Other recognizable aspects of the garage may include color, shape, shading, brightness, darkness, contrasting colors, sizes of shapes, etc. Camera  624  may be disposed in various locations throughout the garage and direct to the garage door in either the closed or open position. For example, camera  624  may be affixed to the garage wall and directed toward the garage door opening (e.g., garage door in the closed position). Processing electronics  604  may be configured to detect a difference between an open and closed garage door  18 . The user may enhance the ability of processing electronics  604  to uniquely recognize that the garage door is closed by including stickers, markers, objects or other items. The garage door may have a sticker recognizable by processing electronics  604  on the inside of the garage door. If the door is closed, the sticker will be detected, and if the garage door is open, the sticker will not be detected. 
     Photoelectric sensor  626  may be coupled to interface  602  and configured to provide data with respect to the surroundings of the inside of the garage. Photoelectric sensor  626  may be disposed anywhere in the garage or built into garage door opener  14 . Photoelectric sensors  626  may include sensors that use Infrared (IR), visible red, laser, UV or sensors using any other type of light. Photoelectric sensor  626  may be used to determine whether the vehicle  10  is in the garage by detecting distances and/or sizes of objects in the garage. Vehicle  10  is large object compared to other objects in the garage and can be identified either by location within the garage, or size. Processing electronics  604  may be coupled to a memory configured to store location and size data for the vehicle  10  in the garage and to compare subsequent measured data to determine whether vehicle  10  is in the garage. 
     The user may also use stickers, paint, reflectors, or other items to be used in conjunction with the various types of photoelectric sensors to assist processing electronics  604  in determining a unique identity of the engine or its presence in the garage. For example, the user could put special UV paint or stickers on the vehicle  10  to assist processing electronics  604  in detecting the reflections of UV light and determining that the vehicle  10  is in the garage. Other types of light signals and corresponding items (e.g., stickers, paint, reflectors) could be used in various configurations to determine that the vehicle  10  is located in the garage. Photoelectric sensor  626  may be positioned above the location in the garage where vehicle  10  is parked (e.g., in or on the garage door opener) and configured to provide data to processing electronics  604  for determining when vehicle  10  is parked below the sensor. When vehicle  10  is not present, the distance to the garage floor will be detected. The garage floor may be covered with stickers, paint, reflectors, or other items to be used in conjunction with the various types of photoelectric sensors to enhance the determination by processing electronics  604  of the distance from the photoelectric sensor  626  to the floor. When vehicle  10  is in the garage under the photoelectric sensor  626 , the determined distance from the sensor to vehicle  10  will be noticeably shorter than the distance to the garage floor. 
     Further, many garage doors include a visible red light sensor at the bottom of the opening to assist in detecting whether the opening of the garage door is obstructed by an object or person. The visible red sensor could be configured to have two parallel sensors, one closer to the garage opening and one further away from the opening to assist processing electronics  604  in determining whether vehicle  10  is entering or exiting the garage. When vehicle  10  is entering the garage, the sensor nearest the garage opening will be blocked first by vehicle  10  and the sensor furthest from the opening will be blocked second. When vehicle  10  is leaving the garage the sensor furthest from the garage opening will be blocked first and the sensor closest to the garage opening will be blocked second. In this way, the direction of vehicle  10  can be determined by processing electronics  604 . In order to avoid an improper determination that vehicle  10  has entered or left the garage, processing electronics  604  may be configured to use photoelectric sensor  626  to determine the time it takes for the object to pass through the detector and to compare that time to a threshold. The time it takes for a person or a bicycle to pass through the detector will typically be much less than the time it takes for vehicle  10  to pass through the sensor. Thus, if the time it takes for the object to pass exceeds a threshold, then it may be assumed that vehicle  10  passed through the detector. 
     Processing electronics  604  may be configured to use data received from photoelectric sensor  626  via interface  602  to determine whether the garage door is closed. Photoelectric sensors  626  may include sensors that use Infrared (IR), visible red, laser, UV or sensors using any other type of light. Photoelectric sensor  626  may be configured in a variety of ways to assist processing electronics  604  in determining whether garage door is closed. Photoelectric sensor  626  may be disposed on the garage walls, ceiling, or floor, the garage door opener, or the garage door. For example, photoelectric sensor  626  may be used to assist in determining whether the garage door is closed by transmitting a signal in the direction of the garage door opening. If the garage door is closed, processing electronics  604  will receive data indicating a distance from vehicle  10  to the closed garage door  18 . If the distance determined is below a threshold, processing electronics  604  may determine that the garage door  18  is closed. If the garage door is open, the signal will pass through the garage door opening and reflect off objects outside the garage. The objects detected outside of the garage will appear relatively far away (e.g., above the threshold) and processing electronics  604  will be able to determine that the door is open. Furthermore, various types of reflectors, objects or other items may be disposed in the garage to improve detection of a closed garage door. 
     Photoelectric sensor  626  may also be affixed to the ceiling above the garage door when the garage door  18  is in an open position, the open position of the garage door obstructing the view of photoelectric sensor  626 . In the open position, photoelectric sensor  626  provides data to processing electronics  604  for determining the distance to the open garage door. When the garage door is closed, photoelectric sensor  626  provides data to processing electronics  604  for determining a different distance, such as the distance to the top of vehicle  10  or the distance to the floor. In either case, the distance will be different from the distance to the garage door  18  while in open position. Processing electronics  604  may be coupled to a memory configured to store measurement data related to a closed garage door. The store measurement data may be used by processing electronics  604  to compare the data received from photoelectric sensor  626  with the stored data and to determine whether the garage door is open or closed. The user may also use stickers, paint, reflectors, or other items in conjunction with the various types of photoelectric sensors to assist processing electronics  604  in determining whether the garage door is closed. Furthermore, stickers, paint, reflectors, or other items in conjunction with the various types of photoelectric sensors may also be used to determine a unique identity of the particular garage door. For example, the user could put special UV paint or stickers on the inside of the garage door to detect UV light reflections to assist processing electronics  604  in determining that the garage door  18  is in either a closed or an open position. Other types of light signals and corresponding items (e.g., stickers, paint, reflectors) could be used in various configurations to assist processing electronics  604  in determining whether the garage door  18  is closed. 
     Pressure sensor  628  may be coupled to interface  602  and configured to provide data to processing electronics to assist in determining whether vehicle  10  is in the garage. Pressure sensor  628  may take a variety of forms, including a floor mat, upon which one or more tires of vehicle  10  rests when parked in the garage. The mat may be configured to sense the weight of vehicle  10  and provide data to processing electronics  604  for determine that the vehicle  10  is in the garage. Pressure sensor  628  may also comprise one or more compressible tubes or strips that run along the floor of the garage parallel to the garage opening. Ideally, at least two tubes or stripes are used to assist processing electronics  604  in more precisely determining whether vehicle  10  is entering or exiting the garage. For example, two tubes may be place parallel to the opening of the garage. The tubes may be placed a few inches apart. When vehicle  10  is entering the garage, the tube nearest the garage opening will be compressed first and the tube furthest from the opening will be compressed second by the front wheel of vehicle  10 . Presented with this data, processing electronics  604  may be able to determine that vehicle  10  is in the garage. When vehicle  10  is leaving the garage, the tube furthest from the garage opening will be compressed first and the tube closest to the garage opening will be compressed second. Presented with this data, processing electronics  604  may be able to determine that vehicle  10  is not in the garage. Using two or more tubes or strips allows processing electronics to determine the direction vehicle  10  is traveling. 
     Memory  630  may be coupled to interface  602  and configured to store and provide data with respect to the state of the garage door  18 . Memory  630  may be configured to interact the processing electronics  604  and to store the state of the garage door, the two states being closed and open states. Processing electronics may be coupled to a state machine or other control device that is aware of the state of the garage door, and may be configured to store that current state in memory  630 . Alternatively, processing electronics may be configured to track and store the current state of the garage door  18 . Memory  630  may be used in conjunction with any other sensor to track and assist processing electronics  603  in determining the present state of the garage door  18 . 
     While the different types of sensors have been discussed individually, it is to be understood that the sensors may be used in various configurations and combinations to assist processing electronics in determining whether vehicle  10  is in the garage and whether the garage door is closed. Further processing electronics  604  may be implemented in one or more processing circuits, including one or more integrated circuits, general purpose processors, application specific integrated circuits, field programmable gate arrays, etc. The processing electronics  604  may also be implemented using computer code stored in a memory and executable by the processing electronics. 
     Transmitter  606  may be coupled to processing electronics  604  and configured to transmit data to remote receivers, such as remote garage door transceivers disclosed in the vehicle  10 . Receiver  608  may be coupled to processing electronics  604  and configured to receive a control signal from a remote transmitter to cause the garage door opener  14  to actuate the garage door  18 . Garage door opener  14  may be configured to receive fixed or variable code control signals. Further, transmitter  606  and receiver  608  may be configured to communicate with remote devices using any RF or wireless standard, such as WiFi (e.g., including IEEE 802.11), WiMax, etc. 
     A determination to actuate the garage door may be made by the processing electronics  604  configured to receive data from at least one sensor. The number of sensors needed to make a proper determination to actuate the garage door will depend upon which types of sensors or combinations of sensors are used for detecting the various conditions, including: whether vehicle  10  is started, whether vehicle  10  is in the garage and whether the garage door is closed. Furthermore, the number of sensors needed will depend on how sensitive the various types of sensors are. For example, processing electronics  604  may be configured to provide a command to open the garage door in response to an environment sensor detecting emission levels above a threshold. If emission levels are above a threshold, processing electronics  604  may assume that vehicle  10  is started, that vehicle  10  is located in the garage, and that the garage door is closed. Thus, emission sensor may be the only sensor required by processing electronics  604  to determine whether to provide a command to actuate the garage door  18 . Other sensors may be used to ensure that the garage door  18  is properly actuated, such as an emission pattern sensor  614  or field sensor  612  to determine that the vehicle is in the garage, or a proximity sensor (e.g., radar sensor  616 , sonar sensor  618 , photoelectric sensor  626  or RF sensor  620 ) configured to provide data to processing electronics  604  for determining the position of garage door  18 . As discussed above, field sensor  612  may be configured to determine that vehicle  10  is started and that vehicle  10  is in the garage. However, additional sensors may be required by processing electronics  604  to determine that the position of the garage door  18 , such as a proximity sensors or a garage door status signal stored in memory. Various combinations and configurations of sensors could be used by processing electronics  604  to determine whether a command to actuate the garage door  18  should be generated. 
     Emergency Actuation Determined by the Vehicle and the Garage Door Opener 
     Referring to  FIG. 8 , garage door opener  14  and control system  822  of vehicle  10  may be configured to both participate in determining whether to actuate the garage door  18 . In an exemplary embodiment, control system  822  is mounted to a vehicle  10  for opening the garage door  18  using a garage door opener  14  remote from the vehicle  10 . The garage door opener  14  is including a receiver circuit (e.g., receiver portion of transceiver  806 ). The control system  822  includes an interface for receiving first data from at least one sensor that indicates whether the vehicle engine has started. The interface is also configured to receive a second data from at least one sensor that indicates whether the vehicle  10  is in the garage. Control system  822  further comprises a transceiver  816  configured to receive third data from the garage door opener  14  indicating whether the garage door  18  is closed. Control system  822  also includes processing electronics  814  configured to receive the first, second and third data from the interface and transceiver, and to use the received first, second and third data to determine: whether the vehicle engine is started, whether the vehicle  10  is in the garage and whether the garage door  18  is closed. Processing electronics  814  is further configured to send a command to the transceiver to generate a control signal for transmission to the garage door opener  14  based on the determination of whether the vehicle engine is started, whether the vehicle  10  is in the garage and whether the garage door  18  is closed. The transceiver  816  is configured to transmit the control signal in response to the command. The control signal is formatted for recognition by the wireless receiver of the garage door opener and to cause the garage door opener  14  to open the garage door  18 . 
     The garage door opener  14  in garage  800  comprises an interface  802  for coupling to one or more sensors and configured to receive data from the one or more sensors. Garage door opener  14  also comprises a transceiver  806  with a receiver circuit and transmitter circuit for receiving and transmitting wireless signals. Alternatively, garage door opener may only comprise a receiver circuit for receiving control signals from remote transmitters. Garage door opener further comprises processing electronics  804 , which may be configured to perform one or more functions. Transceiver  806  may receive a control signal from control system  822  and be configured to provide control data based on the control signal to processing electronics  804 . Processing electronics  804  may be configured to receive and process the control data to determine whether to issue a command to actuate the garage door based on the control data. Processing electronics  804  may also be coupled to interface  802  and configured to receive data from sensors  810  and to use the data to determine one or more of the following: whether the vehicle  10  is started, whether the vehicle  10  is in the garage, and whether the garage door is closed. The results of the one or more determinations may be communicated to control system  822  so that processing electronics  814  of vehicle  10  may make the ultimate determination of whether the garage door should be actuated. Alternatively, processing electronics  814  may also be coupled to interface  812  and configured to receive data from sensors  818  and/or  820  and to use the data to determine one or more of the following: whether the vehicle  10  is started, whether the vehicle  10  is in the garage, and whether the garage door is closed. The results of the one or more determinations may be communicated to garage door opener  14  so that processing electronics  804  of garage door opener  14  may make the ultimate determination of whether the garage door should be actuated. Processing electronics  804  of garage door opener  14  may also be coupled to memory  808 , which may be configured to store data regarding the current state of the garage door (e.g., open or closed) or any other data related to sensors  810  (e.g., radar or sonar map of the garage, RF signal strengths or transmission times, thresholds). 
     Alternatively, garage door opener  14  may be configured to only include processing electronics  804  coupled to memory  808  and transceiver  806  (e.g., no interface  802  or sensors  810 ). Memory  808  may be configured to track the current state of the garage door  18  and processing electronics  804  may be configured to provide control system with data regarding the current state of the garage door via transceiver  806  to assist processing electronics  814  of control system  822  in determining whether the garage door should be actuated. In this way the garage door opener  14  assists in determining whether the garage door  18  is closed. The transceiver circuit need not be integrated into the garage door opener  14  but may be a remote device that connects to the garage door opener  14  and configured to communicate data to control system  822  of vehicle  10 . 
     Garage door opener  14  may also be configured to have at least one sensor and to provide the sensor data to control system  822  of vehicle  10  for determining whether to actuate the garage door  18 . Alternatively, control system  822  may be configured to have at least one sensor and to provide sensor data to processing electronics  804  of garage door opener  14 . Referring to  FIG. 3 , vehicle  10  may include one or more of the following sensors: engine control unit (ECU)  310 , a field sensor  312 , an environment sensor  314  (e.g., emission sensor, vibration sensor, temperature sensor), an RF sensor  316 , a radar sensor  318 , a sonar sensor  320 , a camera  322 , a photoelectric sensor  324 , a global positioning system  326 , or any other type of sensor capable of being disposed in or on vehicle  10 . Referring to  FIG. 6 , garage door opener  14  may be coupled to one or more of the following sensors: an environment sensor  610 , a field sensor  612 , an emission pattern sensor  614 , a radar sensor  616 , a sonar sensor  618 , an RF sensor  620 , a capacitive sensor  622 , a camera  624 , a photoelectric sensor  626 , a pressure sensor  628 , a memory  630 , or any other type of sensor capable of being disposed in a garage or garage door opener  14 . As discussed above, sensors data to processing electronics to assist in determining whether an the vehicle  10  is started, whether vehicle  10  is in the garage, and whether the garage door  18  is closed. Certain of these determinations may be more easily detected by sensors and processing electronics in garage door opener  14  or in vehicle  10 . For example, sensors and processing electronics  814  of vehicle  10  may more readily be able to detect that the vehicle  10  is started, while sensors and processing electronics  804  of garage door opener  14  may be able to more easily detect that the garage door  18  is closed. However, processing electronics or vehicle  10  or garage door opener  14  may not be capable of being configured to relay, or appropriately process the data, therefore, other configurations are possible where sensors and processing electronics  814  of vehicle  10  detect a garage door position and the sensors and processing electronics  804  of garage door opener  14  determines whether the vehicle  10  is started. 
     Referring to  FIGS. 8 and 9 , in an exemplary embodiment, interface  812  of control system  822  is coupled to at least one sensor. In step  900 , processing electronics  814  receives first data indicating whether the vehicle is started and whether the vehicle is in the garage and in step  904 , processing electronics determines whether the vehicle is started and whether the vehicle  10  is in the garage. If processing electronics  814  determines that the vehicle  10  is not started or the vehicle  10  is not in the garage then processing electronics  814  continues to receive and process data. Processing electronics  814  receives second data from the garage door opener  14  indicating whether the garage door  18  is closed and determines whether the garage door is closed based on the second data received. If processing electronics  814  determines that the garage door is not closed, then processing electronics  814  continues to receive and process data. If processing electronics  814  determines that the vehicle  10  is started, vehicle  10  is in the garage and that the garage door is closed, then in step  908 , processing electronics  814  is configured to provide an actuation command to transceiver  816  to generate a control signal formatted for recognition by a wireless receiver of the garage door opener  14  and to cause the garage door opener  14  to open the garage door  18  based on the determination of whether the vehicle engine is started, whether the vehicle is in the garage and whether the door is closed. In step  910 , the transceiver  816  generates the control signal in response to the actuation command. In step  912 , the transceiver  816  transmits the control signal to the wireless receiver of the garage door opener  14  in response to the command in order to cause the garage  18  door to actuate. 
     Various sensors may be utilized by processing electronics in vehicle  10  or garage door opener  14  in determining whether to actuate the garage door, including an environment sensor (e.g., emission sensor, temperature sensor, or vibration sensor), a field sensor (e.g., inductive, magnetic), an engine control unit (ECU), or engine temperature sensor. The advantage to using an environment sensor in either garage door opener  14 , vehicle  10 , or both, is that the environment sensor may be used to make the other determinations as well. For example, if the emissions are above a certain level, it may be assumed that vehicle  10  is started, otherwise there would be no emissions. Further, if the emissions sensor is in the garage, and emissions are detected, it may be assumed that vehicle  10  is located in the garage, otherwise there would be no emissions. Processing electronics may determine that the garage door is closed as a result of high sensed emission levels. The same may be true for temperature and vibration sensing. High temperature and vibration levels may indicate that vehicle  110  is started, in a garage and that the garage door is closed. 
     Other sensors may be more limited in the determinations that may be made from the sensor data. For example, a field sensor may be used to assist processing electronics in determining that vehicle  10  is started and that vehicle  10  is located in the garage. For example, if the field sensor is located in the garage, processing electronics may be configured to distinguish a started vehicle from an off vehicle due to higher fields radiated from the started vehicle. Furthermore, the detection of the fields by the field sensor in the garage would also indicate that vehicle  10  is in the garage when vehicle  10  started and off. Field strength dissipates rapidly and would likely be undetectable over long ranges, therefore, the detection of the fields requires the radiating body to be in close proximity to the sensor. A measured field above a threshold level may indicate that vehicle  10  is in the garage and may further indicate that vehicle  10  is started. ECU may provide data to indicating a started engine and an engine temperature, as well as other characteristics of the engine that would indicate that the engine is started. Other vehicle systems or sensors capable of providing data for assisting processing electronics in determining whether a vehicle engine is started may be utilized. The data indicating a started engine may be utilized by the processing electronics coupled to the interface that receives the data or the data may be transmitted to the processing electronics of the other system (e.g., garage door opener  14  or control system  822 ). 
     Sonar, radar and RF sensors may be disposed in the garage (e.g., walls, ceiling, door or floor) and directed toward a location in the garage where vehicle  10  is likely to park. Sonar, radar and RF sensors may be configured to assist processing electronics  804  in determining distances to objects and may be used to determine the distance to a vehicle in, or entering, the garage. As vehicle  10  enters the garage and moves closer to the RF, radar or sonar sensors, the measured distance decreases. If the measured distance drops below a threshold, a determination that vehicle  10  is in the garage may be made. Similarly, sonar, radar and RF sensors may be disposed in vehicle  10  and may assist processing electronics  814  in determining distances from vehicle  10  to objects. Furthermore, when disposed in vehicle  10 , these sensors may be used by processing electronics  814  to determine that vehicle  10  is in a garage. To enhance the determination that vehicle  10  is in the garage, a reflector (e.g., RFID tag), or other type of object, may be disposed in the garage. The reflector may be configured to provide enhanced reflections to the sonar, radar and RF sensors, or the reflector may be configured to provide a unique reflective pattern, or reflective signal to assist processing electronics in determining whether vehicle  10  is in the garage, or which garage stall, if there are multiple garage stalls. 
     As described above, sonar, radar and RF sensors may be disposed in the garage (e.g., walls, ceiling, door or floor) and directed toward the garage door opening. Sonar, radar and RF sensors may be configured to assist processing electronics in determining distances to objects and may be used by processing electronics to determine the distance to the garage door when closed, and the change in distance when the garage door is open. When the garage door is open the sensors will provide data for detecting a change in distance because the sensors will detect objects outside the garage. If the detected distance does not exceed a threshold, a determination that the garage door is closed may be made. Various types of reflectors, objects or other items may be disposed in the garage to improve detection of a closed garage door. 
     Similarly, sonar, radar and RF sensors may be disposed in vehicle  10  and configured to determine distances from vehicle  10  to objects and may be used to determine that the garage door is closed. The sensors may be disposed on vehicle  10  such that the transmitted signal is directed toward the garage door in either the open or closed position when vehicle  10  is parked in the garage. The sensors transmit a signal, receive signal reflections from nearby objects and provide data to processing electronics  814  to determine distances to the nearby objects. If the sensors are directed toward the ceiling to detect an open position, then processing electronics  814  determines that the garage door is closed if the measured distance is greater than a threshold because the detected distance would be to the ceiling rather than the overhead garage door. If the system is directed toward the garage door opening, then processing electronics determines that the garage door is closed if the distance is less than a threshold. To enhance the determination that the garage door is closed, a reflector (e.g., RFID tag), or other type of object, may be disposed on the garage door or garage ceiling above the garage door in the open position. The reflector may be configured to provide enhanced signal reflections to the sonar, radar and RF sensors or the reflectors may be configured to provide a unique reflective pattern or reflective signal to assist processing electronics in determining that the garage door is closed, which garage vehicle  10  is in, if there are multiple garages or which garage stall, if there are multiple garage stalls. 
     Camera or photoelectric sensors (e.g., IR, visible red, Laser, UV) may also be disposed in either the garage or vehicle  10  to assist processing electronics in determining whether vehicle  10  is in the garage. When disposed in the garage (e.g., walls, ceiling, door or floor), the sensors may be directed toward the location in the garage where vehicle  10  is likely to park. As described above, a camera disposed in the garage may assist processing electronics  804  in recognizing vehicle  10  using image processing and pattern recognition techniques. Photoelectric sensors may be configured to assist processing electronics in determining the distance from vehicle  10  to the sensor as vehicle  10  enters and parks in the garage. As vehicle  10  approaches the sensor in the garage, the measured distance decreases. If the distance drops below a threshold, a determination that vehicle  10  is in the garage can be made. In addition to assisting in distance determination, various light sensing systems may be configured to simply assist in determining the presence of vehicle  10 . For example, a UV sensor may be disposed above the location where vehicle  10  parks in the garage. Special UV paint, stickers or other type of UV reflector, which is detectable by the UV sensor may be placed in the garage floor. If vehicle  10  is parked in the garage, the UV sensor will be unable to detect the UV reflections from the reflective material on the garage floor and a determination by processing electronics that vehicle  10  is in the garage can be made. Alternatively, a UV sticker or other type of UV reflector may be disposed on top of vehicle  10 . The UV sensor may be able to detect the UV reflections from reflector on vehicle  10  and a determination by processing electronics that vehicle  10  is in the garage can be made. 
     Other light sensing configurations disposed in the garage may configured to assist processing electronics  804  in determining whether vehicle  10  is entering or leaving the garage. For example, many garage doors include a visible red light sensor at the bottom of the opening to detect whether the opening of the garage door is obstructed by and object or person. The visible red sensor could be configured to have two parallel sensors, one closer to the garage opening and one further away from the opening, to assist in determining whether vehicle  10  is entering or exiting the garage. When vehicle  10  is entering the garage, the sensor nearest the garage opening will be blocked first by vehicle  10  and the sensor furthest from the opening will be blocked second. When vehicle  10  is leaving the garage the sensor furthest from the garage opening will be blocked first and the sensor closest to the garage opening will be blocked second. Processing electronics  804  may be able to distinguish vehicle  10  passing through the garage door opening from other objects by the time it takes for vehicle  10  to pass through the garage door opening. For example, it will typically take much longer for vehicle  10  to pass through the opening that for a person, or a child on a bicycle. Additionally, other sensors may be used to confirm that vehicle  10  is either in or out of the garage. The other sensors may be activated by the sensing of an object passing through the garage door opening. In addition to assisting in distance determination by processing electronics, various light sensors may be configured to assist processing electronics in determining the presence of vehicle  10 . For example, a UV sensor may be disposed above the location where vehicle  10  parks in the garage, as described above. 
     A camera disposed on a vehicle, such as a bumper camera, may be configured to assist processing electronics  814  in recognizing certain aspects of the garage. The ability of processing electronics  814  to determine that vehicle  10  is in the garage or to uniquely recognize the garage or garage stall, may be enhanced by stickers, markers, objects or other items in the garage or on the garage walls or door. Photoelectric sensors may be configured to assist in determining the distance from vehicle  10  to the garage interior as vehicle  10  enters and parks in the garage. As vehicle  10  approaches the garage, the measured distance decreases. If the distance drops below a threshold, a determination that vehicle  10  is in the garage can be made. 
     Camera or photoelectric sensors (e.g., IR, visible red, Laser, UV) may also be disposed in either the garage or vehicle  10  to assist processing electronics in determining whether the garage door is closed. When disposed in the garage (e.g., walls, ceiling, door or floor) or in vehicle  10 , the sensors may be directed toward the garage door (in either the open or closed position). Processing electronics  804  may use image processing and pattern recognition techniques to recognize certain aspects of the garage that would indicate that the garage door is closed. For example, if the image is dark but it is day time, it may be assumed that the garage is dark during the day time because the garage is closed. Other recognizable aspects of the garage may include color, shape, shading, brightness, darkness, contrasting colors, sizes of shapes, etc. The user may enhance the ability of processing electronics  804  to uniquely recognize that the garage door is closed by including stickers, markers, objects or other items. For example, a camera may be affixed to a garage wall, or the back of vehicle  10 , and positioned to face the garage door. The inside of the garage door may have a sticker recognizable by processing electronics using the camera. If the door is closed, processing electronics  804  using the camera will detect the sticker and if the garage door is closed the sticker will not be detected. 
     Photoelectric sensors disposed in the garage or vehicle  10  may be configured in a variety of ways to assist processing electronics in determining the whether the garage door is closed. For example, a photo signal, or light signal, may be directed toward the garage door opening from either vehicle  10  or a fixed position in the garage. If the garage door is shut, the processing electronics  804  may use data received from photoelectric sensor to determine a distance to the closed garage door. If the garage door is open the determined distance will be greater than the distance to the garage door because the distance will be to objects located outside the garage. If it is determined that the distance being measured is less than a threshold, a determination that the garage door is closed may be made. A photoelectric sensor may be affixed to the ceiling above the garage door when the garage door is in an open position, the open position of the garage door obstructing the view of photoelectric sensor. In the open position, processing electronics  804  uses photoelectric sensor to determine the distance to the open garage door. When the garage door is closed, processing electronics  804  uses photoelectric sensor to determine the distance to the top of vehicle  10  or the distance to the floor. In either case, the distance will be different from the distance to the garage door while in open position. If it is determined that the distance being measured is greater than a threshold (e.g., the distance to the garage door while in open position), it may be determined that the garage door is closed. The garage door opener  14  and control system  822  may include a memory configured to store measurement data, including thresholds. Current measurement data may be compared to stored measurement data or corresponding thresholds to determine whether the garage door is open. The user may also use stickers, paint, reflectors, or other items to be used in conjunction with the various types of photoelectric sensors to assist processing electronics in determining whether the garage door is closed or in determining a unique identity of the particular garage door. For example, the user could put special UV paint or stickers on the inside of the garage door to assist in detecting the reflections of UV light to determine that the garage door is in either a closed or an open position. Other types of light frequencies and corresponding items (e.g., stickers, paint, reflectors) could be used in various configurations to assist in determining whether the garage door is closed. 
     A capacitive sensor may be disposed in the garage and coupled to interface  802  and configured to assist processing electronics in determining whether to actuate the garage door. A capacitive sensor may be configured to measure the capacitance between an electrode (e.g., a conductive plate) disposed in the garage and vehicle  10  entering and parking in the garage. As vehicle  10  enters the garage and approaches the electrode, the capacitance measured between vehicle  10  and the electrode increases. The electrode in the garage may be positioned on the garage wall facing vehicle  10  as it enters the garage or it may be positioned above the location where vehicle  10  parks in the garage. The electrode may be integrated into the garage floor or a mat that vehicle  10  parks on top of in the garage. 
     Capacitive sensor may also be disposed in either the garage or vehicle  10  to assist processing electronics in determining whether the garage door is closed. A capacitive sensor requires at least two electrodes. One of the electrodes may be disposed on the inside or out side of the garage door, or alternatively, embedded within the garage door. The other electrode may be disposed on the garage door ceiling above the garage door when the garage door is in an open position. In the open position, the electrode on the ceiling and the electrode on the garage door are relatively close to one another, which should result in a relatively strong capacitance measurement. In the closed position, the electrodes are relatively far apart, which should result in a relatively weak capacitance measurement. If the measured capacitance is relatively weak (below a threshold) then processing electronics may determine that the garage door is closed. An electrode may also be placed at the bottom of the garage door while the other electrode may be placed on the garage floor in the garage door opening where garage door contacts the floor when closed. The electrode on the floor may be integrated into the floor or may be in the form of a strip that runs along the opening of the garage door configured to help seal the garage door when in the closed position. When the garage door is closed, the electrodes are closed together and should result in a relatively high measured capacitance. When the door is open, the electrodes are far apart and should result in a relatively low measured capacitance. If the measured capacitance is high, processing electronics may determine that the door is closed. An electrode may be disposed on vehicle  10  and on the garage door. If the electrode is disposed on the back of vehicle  10  (e.g., rear bumper), the capacitance measured between the vehicle electrode and the garage door electrode will be greater when the garaged door is closed. Various other configurations are possible. 
     An emission pattern sensor and a pressure sensor may be disposed in the garage and coupled to interface  802  and configured to assist processing electronics  804  in determining whether to actuate the garage door. As described above, an emission pattern sensor may be used to by processing electronics  804  to determine whether vehicle  10  in the garage has started or stopped. If it determines that vehicle  10  has started and the emissions fade away, it may be determined that vehicle  10  has just left the garage. If it determines that vehicle  10  has just shut down and the emissions fade away, it may be determined that vehicle  10  is still located in the garage. Also described above, is a pressure sensor used by processing electronics  804  to determine whether vehicle  10  is located in a garage. The pressure sensor may be in the form of a mat disposed on the garage floor and configured to sense the weight of vehicle  10  when parked in the garage. The pressure sensor may also be integrated in to the garage floor to assist processing electronics  804  in determining the presence of vehicle  10 . The pressure sensor may also be a strip or tube sensitive to pressure and placed on the garage floor parallel to the garage door opening. Two parallel strips, or a single strip with two integrated parallel pressure tubes may be used by processing electronics  804  to determine the direction of vehicle  10  as described above. Further, processing electronics may be configured to distinguish between the pressure caused by vehicle  10  and the pressure caused by a person or bicycle. 
     Vehicle  10  may be equipped with a GPS or any other type of location determination or navigation system. The GPS may include dead reckoning functionality to determine the location of vehicle  10  in areas where a satellite signal is unavailable or unreliable. The GPS system may assist in determining that vehicle  10  is in the garage. The garage location may be identified by the GPS system as a location of interest and further defined as a garage location. The GPS system may be incapable of receiving satellite signal while in the garage, however, the GPS system or vehicle processing electronics may be configured to recognize that vehicle  10  is entering the garage if vehicle  10  is in close proximity to the garage and moving toward the garage when the signal is lost. Additionally, GPS system may be configured with dead reckoning which allows the vehicle navigation system to continue to calculate the location of vehicle  10  based on the vehicle&#39;s speed and heading. The dead reckoning capabilities may be used by processing electronics to determine that vehicle  10  is parked in the garage. GPS, and other location determination systems, may be configured to indicate the garage stall in which vehicle  10  is parked. 
     Control system  822  and the garage door opener  14  may be configured to communicate with one another when in close proximity using RF signals or other types of communication signals to determine whether vehicle  10  is in the garage. The signal strength of the communication signals may be such that control system  822  and the garage door opener  14  may only be capable of communicating when vehicle  10  is substantially located in the garage. Alternatively, determining the distance between vehicle  10  and the garage may be accomplished by measuring the time it takes for a signal to be transmitted and then returned to the transmitting device, or comparing the signal strength of the transmitted signal to the received signal, or both the transmission time and the signal strength may be used. As vehicle  10  is moves closer to the garage, the transmission time will decrease and the received signal strength will increase. Control system  822  may be configured to transmit an RF signal and the garage door opener  14  may include an RF ID tag or some type of processing electronics to communicate or reflect the signal back to vehicle  10 . Conversely, the garage door electronics may be configured to transmit the RF signal and vehicle  10  may include an RF ID tag or some type of processing electronics to communicate or reflect the signal back to vehicle  10 . Rather than continuously transmit a signal, the garage door electronics, or vehicle  10 , may be configured to send out a periodic signal to conserve energy or processing power, or may be triggered by other events, such as the actuation of the garage door, the GPS system determining that vehicle  10  is within a predetermined proximity to the garage. 
     While the different types of sensors and systems for sensing have been discussed individually, it is to be understood that the sensors and systems may be used in various combinations to determine whether vehicle  10  is started, whether vehicle  10  is in the garage and whether the garage door is closed. 
     Processing electronics  804  of garage door opener  14  may be configured to monitor the state of the garage door  18 , such that processing electronics  804  knows whether the garage door is in a closed or open position. The state of the garage door may be controlled and monitored by various processing electronics, including a state machine. The current position of the door may be stored in memory  808  and provided to either processing electronics  804  or control system  822  for processing to determine whether the garage door needs to be actuated. 
     Further, rather than, or in addition to, opening the garage door, vehicle  10  may be configured to shut off when a it is determined that vehicle  10  is started, that vehicle  10  is located in the garage and that the garage door is closed. Turing off vehicle may also prevent a harmful garage environment. The garage door may also be activated if harmful conditions are detected, such as high CO or CO 2  levels, even if no determination has been made regarding a started engine or location of the engine in the garage. In addition to, or in place of, opening the garage door, garage windows or vents in the garage door, ceiling or walls may be actuated to provide needed ventilation. If vehicle  10  is started by remote starter, a vehicle started signal may be provided for processing to determine whether other conditions are met for actuation. Or the actuation of the starter may request an actuation of the garage door if the state of the garage door is the closed position. A closed position may be determined by using the state stored in memory or by some other sensor coupled to garage door opener  14  or vehicle  10 . Further, emergency notification may be sent to a homeowner through a home alarm system, text messaging, pager, email, or phone in response to an emergency actuation, the determination of a need for actuation or the detection of a harmful condition. 
     Further, it is to be understood that PHEV, combustion engine electrical power generator, or any other type of combustion engine may be substituted for vehicle  10 . The processing electronics used by the vehicle may be implemented as a single processor or any number of processors, including processor that may be embedding in the various sensors. The sensors used may be embedded in or affixed to the vehicle by the manufacturer or may be later installed. Further, the processing electronics may be implemented outside the vehicle as a stand alone system separate from the vehicle control system and may be configured to provide a wired or wireless emergency actuation signal to the garage door opener. External processing electronics and vehicle control system may also be configured to share the sensing and/or processing needed for determining whether to actuate the garage door. 
     The processing electronics used by garage door electronics may be implemented as a single processor or any number of processors, including processor that may be embedding in the various sensors. The various sensors and processors need not be embedded in the garage door opener, but may be located anywhere in the garage. Further, the garage door electronics, including all of the processing electronics and sensors, may be implemented outside the garage door opener with sensors disposed in the garage as a stand alone system separate from the garage door opener. Garage door electronics may be configured to provide a wired or wireless emergency actuation signal to the garage door opener. Garage door electronics and garage door opener may also be configured to share the sensing and processing needed for determining whether to actuate the garage door. 
     Referring to  FIG. 10 , control system  822  disposed in vehicle  10  may be a trainable transmitter. Trainable transmitter  1000  includes a transmitter circuit  1006  and a receiver  1008  that are coupled to an antenna  1010 . In another embodiment, a single dual function transceiver having transmit and receive circuitry may be provided in place of a separate receiver and transmitter. Transmitter circuit  1006  and receiver  1008  are also coupled to a control circuit  1004 . Control circuit  1004  may include various types of control circuitry, digital and/or analog, and may include a microprocessor, microcontroller, application specific integrated circuit (ASIC), or other digital and/or analog circuitry configured to perform various input/output, control, analysis, and other functions to be described herein. A switch interface  1016  is coupled to a plurality of buttons or switches. Alternatively, other user input devices such as knobs, dials, etc., or a voice actuated input control circuit configured to receive voice signals from a vehicle occupant may be provided to receive user input. In an exemplary embodiment, switch interface  1016  is coupled to one terminal of each of three push button switches  1018 ,  1020  and  1022 , which have their remaining terminal connected to ground. Switches  1018 ,  1020  and  1022  may each be associated with a separate remote control system to be controlled, each of which may have its own unique operating RF frequency, modulation scheme, and/or control data. Thus, switches  1018 ,  1020  and  1022  each correspond to a different radio frequency channel for transmitter circuit  1006 . It should be understood, however, that each channel may be trained to the same original transmitter, if desired, or to different original transmitters. 
     Trainable transmitter  1000  may also be configured to include an interface  1002  coupled to control circuit  1004 . Interface  1002  is also coupled to one or more sensors  1026  and/or ECU  1024  and configured to receive data from sensors  1026  and ECU  1024  and to provide the received data to control circuit  1004 . Control circuit may be configured to process the received data and determine whether to provide an actuation command to transmitter  1006  for causing the garage door  14  to actuate the garage door  18 . 
     Switch interface  1016  couples signal information from switches  1018 ,  1020  and  1022  to the input terminals of control circuit  1004 . Control circuit  1004  includes data input terminals for receiving signals from the switch interface  1016  indicative of the closure states of switches  1018 ,  1020  and  1022 . A power supply  1028  is conventionally coupled to the various components for supplying the necessary operating power in a conventional manner. 
     Control circuit  1004  is also coupled to a display  1014  which includes a display element such as a light emitting diode (LED). Display  1014  may alternatively include other display elements, such as a liquid crystal display (LCD), a vacuum fluorescent display (VFD), or other display elements. Control circuit  1004  includes a memory  1012  including volatile and/or non-volatile memory to, for example, store a computer program or other software to perform the functions described herein. Memory  1012  is configured to store learned information such as control data and carrier frequency information that may be associated with switches  1018 ,  1020  and  1022 . In addition, for rolling code or other cryptographically encoded remote control systems, information regarding the rolling code or cryptographic algorithms for each system may be pre-stored and associated with frequencies and control data that may be used to identify a particular type of remote control system and, therefore, the appropriate cryptographic algorithm for the remote control system. As discussed previously, each switch or button  1018 ,  1020  and  1022  may be associated with a separate remote control system, such as different garage door openers, electronically operated access gates, house lighting controls and other remote control systems, each which may have its own unique operating RF frequency, modulation scheme and control data. 
     Transmitter circuit  1006  and receiver  1008  communicate with the garage door opener  14  via antenna  1010 . Garage door opener  14  may be configured to receive control signals via receiver  16 . Receiver  1008  may be used to receive signals via antenna  1010  and transmitter circuit  1006  may be used to transmit signals via antenna  1010 . In an alternative embodiment, a separate antenna may be used with transmitter  1006  and with receiver  1008  (e.g., separate transmit and receive antennas may be provided in the trainable transmitter). Once a channel of trainable transmitter  1000  has been trained, trainable transmitter  1000  is configured to transmit a wireless control signal having control data that will control garage door opener  14 . For example, in response to actuation of a switch, such as switch  1018 , transmitter circuit  1006  is configured, under control from control circuit  1004 , to generate a control signal having a carrier frequency and control data associated with the particular trained channel. The control data may be modulated onto the control signal using, for example, frequency shift key (FSK) modulation, amplitude shift key (ASK) modulation or other modulation technique. The control data on the control signal may be a fixed code or a rolling code or other cryptographically encoded control code suitable for use with garage door opener  14 . As mentioned previously, trainable transmitter  1000  may learn the control code and carrier frequency for remote control system using an original transmitter for garage door opener  14 . 
     Referring to  FIG. 11 , vehicle  10  may include a control system  1106  capable of accessing data files from other remote sources  1116  over a communication link  118 . For example, control system  1106  may access media data files, phonebook data files, calendar data, or any other accessible data of use by control system. 
     In-vehicle control system  1106  may include a communication device  1120 , a data processing system  1122 , a display driver  1124 , an output display  1108 , an user interface  1126 , an audio input device  1128 , an audio output device  1130 , an audio system  1104 , a garage door control system  1144  and a memory device  1132 . 
     Communication device  1120  may be configured to establish communication link  1118  with remote source  1116 . In one exemplary embodiment, control system  1106  may establish a wireless communication link such as with Bluetooth® communications protocol, an IEEE 802.11 protocol, an IEEE 802.16 protocol, a cellular signal, a Shared Wireless Access Protocol-Cord Access (SWAP-CA) protocol, or any other suitable wireless technology. In another exemplary embodiment, control system  1106  may establish a physical communication link such as with USB technology, Firewire technology, optical technology, other serial or parallel port technology, or any other suitable physical communication link. Communication device  1120  may receive one or more data files from remote source  1116 . In various exemplary embodiments, the data files may include text, numeric data, or any combination thereof. 
     Data processing system  1122  is coupled to communications device  1120  and may be configured to control each function of control system  1016 . Data processing system  1122  may facilitates speech recognition capabilities of control system  1106  for the convenience of the user. Data processing system  1122  may include digital or analog processing components or be of any past, present, or future design that facilitates control of control system  1106 . Data processing system  1122  may be a single data processing device having various hardware and/or software components or multiple data processing devices. Data processing system  1122  may be used to facilitate any number of audio related features, including front-to-rear or rear-to-front communications features. 
     Display driver  1124  is coupled to an output display  1108  and may be configured to provide an electronic signal to the output display. In one exemplary embodiment, the electronic signal may include the text and/or numeric data of the data files, while in other exemplary embodiments, any other desired data may be included with the text and/or numeric data or by itself in the electronic signal to the output display. In another exemplary embodiment, display driver  1124  may be configured to control output display  1108  with touch-screen capabilities, while in other exemplary embodiments, display driver  1124  may be configured to control output display  1108  without making use of touch-screen capabilities. In still other exemplary embodiments, display driver  1124  may be of any past, present, or future design that allows for the control of output display  1108 . 
     User interface  1126  may be configured to facilitate tactile user interaction with control system  1106 . In various exemplary embodiments, user interface  1126  may include pushbuttons or rotatable knobs in any configuration or may include other tactile user contact points. 
     Audio system  1104 , for example an audio input receiver, may be configured to switch between various audio inputs, mix audio input signals into an audio output signal, provide volume control, filtering, attenuation, and/or other audio-related features. Audio system  1104  and its accompanying audio data or audio signals may be analog-based, digital-based, or any combination thereof. Audio system  1104  may include various input devices such as compact disk players, radio components, satellite radio components, digital media players, etc. According to other various embodiments, audio system  1104  may include switching, processing, or routing electronics. According to yet other various embodiments, audio system  1104  may include any number of amplifiers, or provide audio output signals to amplifiers. Audio system  1104  may include audio output devices or may provide signals to audio output devices. Audio system  1104  may be partially or entirely built into the control system  1106  or be a stand-alone audio system that accepts control and audio inputs from control system  1106  or the other components of vehicle  10 . Audio system  1104  may connect to the control system  1106  via an interface module (shown as the lines connecting control system  1106  and audio system  1104  in  FIG. 11 ) of control system  1106 . Audio system  1104  may be coupled to control system  1106  via any physical or wireless communication connection as described above. According to an exemplary embodiment, audio system  1106  is any audio system of the past, present or future that accepts audio inputs and has an audio output capability. 
     Audio input device  1128 , for example a microphone, is configured to receive the utterance of a user for transmission to data processing system  1122  for speech recognition so that the functions of control system  1106  may be operated by voice command. According to an exemplary embodiment, audio input device  1128  may be configured and used to receive user utterances for amplification to other users. Audio received by audio input device  1128  may be sent to and from other systems and components of the vehicle such as control system  1106 , audio system  1104 , processor  1122 , memory device  1132 , audio input device  1128 , audio output device  1130 , etc. The audio may be sent and received throughout the systems and components of vehicle  10  as audio data (e.g., audio signal(s), audio data, analog audio signal(s), digital audio signal(s), audio input signal(s), audio output signal(s), audio information, etc.). Regardless of whether the audio data or audio signal changes form, is processed, routed, amplified, attenuated, filtered or mixed, the terms “audio data” and “audio signal” may be used throughout this application to refer to any data or signal having an audio component. Audio output devices (e.g., audio output device  1130 , etc.) may be configured to provide the user with an audio prompt of various functions, such as user selection confirmation. According to an exemplary embodiment, audio output devices may exist within or externally from the housing of control system  1106 . 
     Data processing system  1122  may include a text-to-grammar device  1134 , a speech recognition device  1136 , and a text-to-speech device  1138 . Text-to-grammar device  1134  may be coupled to communications device  1120  and may be configured to generate a phonemic representation of the text and/or numeric data of each of the data files received by communications device  1120  from remote source  116 . The phonemic representation of the text and/or numeric data of each data file may be configured to facilitate speech recognition of each data file. After conversion of a data file to a phonemic representation, the data file may be accessed via an oral input command received by speech recognition device  1136  via audio input device  1128 . 
     Speech recognition device  1136  may be configured to receive an oral input command from a user via audio input device  1128 . Speech recognition device compares the received oral input command to a set of predetermined input commands, which may have been configured by text-to-grammar device  1134 . In various exemplary embodiments, the input commands may be related to the playback of a media file, the dialing or input of a phone book entry, the entry or listing of calendar or contact data, the control of the HVAC system, or any other desired function to be performed on data. According to various exemplary embodiments, the input command may be related to initiating, terminating and/or otherwise controlling front-to-rear communications functions. Speech recognition device  1136  may determine an appropriate response to the oral input command received from the user, for example, whether the oral input command is a valid or invalid instruction, what command to execute, or any other appropriate response. 
     Text-to-speech device  1138  may be configured to convert the text and/or numeric data of each data file received from remote source  1116  into an audible speech representation. This functionality may allow control system  1106  to audibly give data to the user via audio output device  1130  or the audio system. For example, control system  1106  may repeat a user selected function back to the user, announce media file information, provide phonebook or contact information, or other information related to data stored in memory  1132  or remote source  116 . 
     Memory device  1132  is configured to store data accessed by control system  1106 . For example, memory device  1132  may store data input by remote source  1116 , data created by data processing system  1122  that may be used later, intermediate data of use in a current calculation, or any other data of use by control system  1106 . Memory device  1132  includes both a volatile memory  1140  and a non-volatile memory  1142 . Volatile memory  1140  may be configured so that the contents stored therein may be erased during each power cycle. Non-volatile memory  1142  may be configured so that the contents stored therein may be retained across power cycles, such that upon system power-up, data from previous system use remains available for the user. 
     Garage door control system  1144  may be coupled to control system  1106  to utilize the speech recognition capabilities of control system  1106 . The user would be able to actuate the garage door opener  14  using voice commands or configure garage door control system  1144  using voice inputs. Furthermore, garage door system  1144  may coupled to control system  1106  and configured to communicate with remote server  1146  via communication device  1120 , wherein the remote server  1146  provides access to the internet. 
     Note that remote source  1116  may be any suitable remote source that includes a transceiver and is able to interface with control system  1106  over communications link  118  in either a wireless or physical embodiment. In various exemplary embodiments, remote source  116  may be one or more of a mobile phone, a personal digital assistant (PDA), a media player, a personal navigation device (PND), or various other remote data sources. 
     The exemplary embodiments illustrated in the Figures are offered by way of example only. Accordingly, the present disclosure is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims. The order or sequence of any processes or method steps may be varied or re-sequenced according to alternative embodiments. 
     Describing the disclosure with Figures should not be construed as imposing on the disclosure any limitations that may be present in the Figures. The present disclosure contemplates methods, systems and program products on any machine-readable media for accomplishing its operations. The embodiments of the present disclosure may be implemented using an existing computer processor(s), or by a special purpose computer processor for an appropriate vehicle system, incorporated for this or another purpose or by a hardwired system. 
     As noted above, embodiments within the scope of the present disclosure include program products comprising machine-readable media for carrying or having machine-executable instructions or data structures stored thereon. Such machine-readable media can be any available media which can be accessed by a general purpose or special purpose computer or other machine with a processor. By way of example, such machine-readable media can comprise RAM, ROM, EPROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to carry or store desired program code in the form of machine-executable instructions or data structures and which can be accessed by a general purpose or special purpose computer or other machine with a processor. When information is transferred or provided over a network or another communications connection (either hardwired, wireless, or a combination of hardwired or wireless) to a machine, the machine properly views the connection as a machine-readable medium. Thus, any such connection is properly termed a machine-readable medium. Combinations of the above are also included within the scope of machine-readable media. Machine-executable instructions comprise, for example, instructions and data which cause a general purpose computer, special purpose computer, or special purpose processing machines to perform a certain function or group of functions. 
     It should be noted that although the diagrams herein may show a specific order of method steps, it is understood that the order of these steps may differ from what is depicted. Also, two or more steps may be performed concurrently or with partial concurrence. Such variation will depend on the software and hardware systems chosen and on designer choice. It is understood that all such variations are within the scope of the disclosure. Likewise, software implementations of the present disclosure could be accomplished with standard programming techniques with rule-based logic and other logic to accomplish the various connection steps, processing steps, comparison steps and decision steps. 
     The foregoing description of embodiments of the disclosure has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure to the precise form disclosed, and modifications and variations are possible in light of the above teachings or may be acquired from practice of the disclosure. The embodiments were chosen and described in order to explain the principals of the disclosure and its practical application to enable one skilled in the art to utilize the disclosure in various embodiments and with various modifications as are suited to the particular use contemplated.