Abstract:
A method and system relating to connecting a wireless device carried by an individual to a vehicle network by providing a hands-free feature for notifying a vehicle module of the presence of a wireless device. In response to the notification, the vehicle module can connect the wireless device to the vehicle network through a wireless link.

Description:
BACKGROUND OF INVENTION 
   1. Field of the Invention 
   The present invention relates to a system for connecting a wireless device carried by an individual to a vehicle network. 
   2. Background Art 
   Today&#39;s vehicles include a number of modules that perform various functions associated with the operation of a vehicle. Some of the vehicle modules may even be capable of operating with other remotely located wireless devices. In particular, more and more wireless devices, such as personal digital assistants or cellular phones, are including capabilities for operating with the vehicle modules. 
   If the vehicle modules are aware of the presence of the wireless device, a wireless link can be set up between the wireless device and the vehicle modules for communicating signals to each other for operation. While pressing a button on the instrument panel is a common way to notify the vehicle modules of the presence of the wireless device, such a process requires affixing an addition button to an already button-full vehicle. Moreover, when the individual carrying the wireless device is entering the vehicle, the individual may not have a hand free to press the button. 
   SUMMARY OF INVENTION 
   The present invention overcomes the above-identified deficiencies by providing a hands-free system for notifying a vehicle module of the presence of a wireless device and for connecting the wireless device to a vehicle network so that the vehicle module can operate with the wireless device. 
   One aspect of the present invention relates to a system for use in a vehicle for connecting a wireless device carried by an individual to a vehicle network. The system comprises a hands-free sensor for generating a sensor signal indicating the individual&#39;s position within a predefined distance relative to the vehicle. In addition, the system comprises a module enabled based on the sensor signal for determining whether the individual is carrying the wireless device. If the individual is determined to be carrying the wireless device, the module can connect the wireless device carried by the individual to the vehicle network. 
   Another aspect of the present invention relates to a method for use in a vehicle for connecting a wireless device carried by a individual to a vehicle network. The method comprises configuring a module to be enabled based on a hands-free sensor signal for determining whether the individual is within a predefined distance relative to the vehicle. In addition, the method further comprises configuring the module for determining whether the individual within the predefined distance is carrying the wireless module and for connecting the wireless device determined to be carried by the individual to the vehicle network. 
   Another aspect of the present invention relates to a system for use with a vehicle for connecting a Bluetooth enabled wireless phone carried by an individual to a vehicle network. The system comprises a door sensor for generating a door open signal indicating the opening of a vehicle door. In addition, the system comprises a module connected to the vehicle network and receiving the door open signal through the vehicle network. The module determines whether the individual is conducting a phone conversation using a wireless phone by transmitting a wireless inquiry signal to the phone upon receipt of the door open signal. Furthermore, the system comprises a Bluetooth wireless link between the module and the Bluetooth enabled wireless phone. The wireless link is provided by the module in response to the module receiving the door open signal and determining the individual is conducting the phone conversation with the wireless phone. Still further, the system comprises a speaker module and a microphone module connected to the vehicle network. An audio component of the phone conversation is transferred through the wireless link to the vehicle network for continuing the phone conversation within the vehicle through the speaker module and the microphone module. 

   
     BRIEF DESCRIPTION OF DRAWINGS 
       FIG. 1  illustrates a system for connecting a wireless device carried by an individual to a vehicle network, in accordance with the present invention. 
   

   DETAILED DESCRIPTION 
     FIG. 1  illustrates a system  10  for use with a vehicle  12  according to one aspect of the present invention. The system  10  can be used with any type of vehicle having at least one module that is capable of wireless communication with a remotely located wireless device  14  that is not permanently affixed to the vehicle. The examples provided below relate to an automobile, but the present invention not limited to automobiles. 
   The vehicle  12  can include a number of modules that perform various functions associated with the operation of the vehicle  12 . Some or all of the number of modules can include capabilities for operating with the remotely located wireless device  14 . While the vehicle  12  can include any number of modules, the modules shown include a telematics module  16 , a powertrain module  18 , an air bag module  20 , a suspension module  22 , a door module  24 , a seat module  26 , a climate module  28 , an instrument panel module  30 , a security module  32 , a diagnostics module  34 , a microphone module  36 , a speaker module  38 , a Bluetooth module  40 , a multimedia unit module  42 , a navigation module  44 , a computer module  46 , and a diagnostics module  48 . 
   The modules are connected together by what can be generally referred to as a vehicle network  50 . The vehicle network  50  can integrate the operations and functions performed by each module by providing a communication structure that links the modules together, or a selected number of the modules, for receiving and transmitting signals between connected modules and other devices that may be connected to or in communication with the vehicle network  50 . 
   The vehicle network  50  shown includes different types of connecting means between the modules, such as a high speed control area network (CAN)  52 , a body CAN  54 , multiple gateways  56 , and a bus  58 . Depending on a module&#39;s functional capabilities and authorizations, the module can be used to interact with the signals passing through the vehicle network for responding to the signals or for relaying the signals to other modules. In some cases, the modules can generate controls signal or transmit received control signals to the vehicle network for use in controlling other modules connected to the vehicle network  50 . 
   One aspect of the present invention relies on Bluetooth protocols for setting up a wireless link  64  between one of the modules connected to the vehicle network  50  and a remotely located wireless device  14 . Through the wireless link  64 , the remotely located wireless device  14  can send and receive signals from at least one Bluetooth enabled vehicle module. As illustrated, the vehicle includes the Bluetooth module  40  for this purpose. 
   The Bluetooth module  40  can understand the signals communicated from the wireless device  14  over the wireless link  64 . The Bluetooth module  40  translates the signals for transmission over the vehicle network  50  for use in operating with or controlling other modules connected to the vehicle network. In addition, the Bluetooth module  40  can translate signals received from the other vehicle modules for transmission to the remotely located wireless device  14  for use in operating with or controlling the wireless device  14 . In addition to Bluetooth protocols for wireless communication, the present invention may operate with other wireless protocols, such as IEEE 802.11b. 
   The Bluetooth module  40  is described as a separate vehicle module, but each of the other vehicle modules could be configured with Bluetooth capabilities for direct communication with the wireless device  14  or for similarly connecting with the wireless device  14  and translating the communications from the wireless device  14  for transmission through the vehicle network  50  for operating with the other vehicle modules. 
   In order to set up the wireless link  64 , both devices must include antennas or other structures allowing communication under the defined specifications and standards for Bluetooth transmissions. The standards and structures for wireless communication are commonly known in the art. 
   Another aspect of the present invention relates to determining the presence of the remotely located wireless device  14  in a hands-free manner. The hands-free manner permits the wireless link  64  to be set up for connecting the wireless device  14  to the vehicle network  50  without an individual carrying the wireless device  14  having to press any button or perform any volitional task. 
   To discover the presence of wireless device  14 , the present invention includes a hands-free sensor  66  for generating a sensor signal indicating the individual is positioned within a predefined distance relative to the vehicle  14 . The sensor  66  can only be engaged from predetermined positions; as such, the sensor signal can reflect whether the individual is within a predefined distance relative to the vehicle  12 . 
   The sensor  66  can be any type of sensor that can be located on the vehicle  12 , as shown, or remote from the vehicle  12 , such as, in the wireless device  14  or elsewhere. The sensor can be a motion detector, a door-switch, a signal generator on the wireless device, a seat weight sensor, an ignition sensor, a window sensor, a door-lock state sensor, body temperature sensor, a heart rate sensor, a combination of these sensors, and the like. Each one of these sensors generates a corresponding sensor signal, the generation of the sensor signal can be used for determining the presence of the individual. 
   In response to determining the presence or known distance of the individual relative to the vehicle  12 , a module, such as the Bluetooth module  40 , can keep track of the sensor signal for determining whether the individual desires to sit in the vehicle and whether the individual desires to exit the vehicle. 
   The sensor  66  can be used to determine whether the individual desires to sit in the vehicle  12  by understanding the recurrence of the sensor signal. As described above, the sensors  66  can be any number of different sensors or combination of sensors. Accordingly, one or more sensor signals can be received by the module  40  for determining whether the individual desires to sit in the vehicle  12 . 
   A door sensor and a weight sensor determines an individual desires to sit in the vehicle when the module  40  receives a door open signal followed by a weight signal indicating the presence of weight on the seat after the door opening. The door sensor and a heart rate sensor determines an individual desires to sit in the vehicle when the module receives the door open signal followed by a heart rate signal indicating the detection of a heart rate after the door opening. The door sensor and an infrared body sensor determines an individual desires to sit in the vehicle when the module receives the door open signal followed by an infrared signal indicating detection of a body in the vehicle after the door opening. The door sensor and a vehicle ignition/powering sensor determines an individual desires to sit in the vehicle when the module receives the door open signal followed by an ignition/powering signal indicating turning on of the engine after the door opening. The door sensor and a break pedal sensor determine an individual desires to sit in the vehicle when the module receives the door open signal followed by a break pedal signal indicating the depression of the break pedal after the door opening. The door sensor and a voice command sensor determines an individual desires to sit in the vehicle when the module receives the door open signal followed by an audio pickup signal indicating a voice command after the door opening. The door sensor, a door handle sensor, and a door unlock sensor determines an individual desires to sit in the vehicle when the module receives the door unlock signal followed by the door open signal indicating the door opening occurring with a door handle actuation signal indicating door handle actuation to open the door. These and other sensors and combinations of sensors can be used to determine whether a person desires to sit vehicle and are not intended or contemplated to limit the scope of the present invention. 
   Once the individual is determined to desire to sit in the vehicle  12 , the Bluetooth module  40  executes a sequence of Bluetooth protocols that causes the Bluetooth module to begin a polling operation for determining whether the individual is carrying a Bluetooth enabled wireless device. The polling operation sends an inquiry out to the area surrounding the vehicle  12  that requests any other Bluetooth enabled devices within the area to respond. If the individual is carrying the wireless device  14 , it can respond to the inquiry. In response to an affirmative reply, another Bluetooth protocol is executed for conducting a handshaking exercise that determines whether the wireless device  14  and the Bluetooth module  40  are authorized to set up the wireless link  64  with each other. Once authorized, the wireless link  64  can be set up, and additional inquiries can be communicated during the setup for determining what type of operation or transaction is to take place. 
   For personal digital assistants, the wireless link can be used to connect the assistant to the vehicle network  50  for interacting with the computer module  40  or the diagnostics module  48 . For a wireless phone, once the authorization occurs, additional communications occur to determine whether a phone conversation is taking place on the wireless phone. If a phone conversation is taking place, the wireless link  64  can be used to transfer an audio component of the phone conversation to the vehicle network  50  for continuing the conversation using the microphone module  36  and the speakers module  48  in the vehicle  12 . When the individual desires to enter the vehicle while conducting a phone conversation on an authorized wireless phone, the phone conversation can be continued in the vehicle in a hands-free manner without the individual carrying the phone having to press a button or perform any other volitional task. 
   The sensor  66  can also be used to determine whether the individual desires to exit the vehicle  12  by understanding the recurrence of the sensor signal or combination of the sensor signals. Accordingly, one of the sensor signals can be received by the Bluetooth mobile  40  for determining whether the individual desires to exit the vehicle. 
   The door sensor and the weight sensor determine an individual desires to exit the vehicle when the module receives the door open signal followed by the weight signal indicating the loss of the previous seat weight. The door sensor and the heart rate sensor determine an individual desires to exit the vehicle when the module receives the door open signal followed by the heart rate signal indicating the loss of the previous detection of the heart rate. The door sensor and the infrared body sensor determine an individual desires to exit the vehicle when the module receives the door open signal followed by receipt of the infrared body detection signal indicating loss of the previously detected body. The door sensor and the vehicle ignition/power sensor determine an individual desires to exit the vehicle when the module receives the door open signal followed by the vehicle power/ignition sensor indicating the loss of the previous vehicle power in signal. The door sensor and the brake sensor determine an individual desires to exit the vehicle when the module receives the open signal followed by the brake signal indicating loss of the previous brake depression. The door sensor and the voice command sensor determine an individual desires to exit the vehicle when the module receives the door open signal followed by the audio pickup signal indicating loss of the previous voice sound. These and other sensors and combinations of sensors can be used to determine whether a person desires to exit the vehicle and are not intended or contemplated to limit the scope of the present invention. 
   Once the Bluetooth module  40  is aware that the individual desires to exit the vehicle  12 , the Bluetooth module  40  disconnects the wireless link  64  between the Bluetooth module and the remotely located wireless device  14 . The Bluetooth module  40  can disconnect the wireless link  64  in a manner that the transaction taking place between the remotely located device  14  and the vehicle network can be transferred to the remotely located device  14  without interrupting the operation. 
   With respect to a phone conversation being conducted in a hands-free manner using the microphone module  36  and the speakers module  38 , the audio component of the phone conversation can be transferred back to the wireless phone for continuing the phone conversation through the wireless phone without the individual having to press a button or otherwise perform a volitional task. If the vehicle modules are being used instead of the remotely located device  14  for conducting the operations that are normally performed on the remotely located device  14 , when the wireless link  64  is disconnected, such operations can be continued on the remotely located device  14  instead of the vehicle modules without interrupting the performance of the operation. 
   While the best mode for carrying out the invention has been described in detail, those familiar with the art to which this invention relates will recognize various alternative designs and embodiments for practicing the invention as defined by the following claims.