Abstract:
A system and methodology for a programmable and reprogrammable locating system comprising of at least one central control unit and at least one response unit. The central control unit, for activating the response unit and for programming/reprogramming the response unit, utilizes a serial bits stream signal to communicate the programming data and activation data to the response unit. Both the central control unit and the response unit utilize the generation of a square wave for discriminating between a signal as coming from a central control unit from those signals emanating from non-central control unit sources. This signal discrimination capability and signal data carrying capability allow multiple response units to be programmed/reprogrammed to one or more central control units. This programmable/reprogrammable capability gives universal adaptability in that the response unit circuitry/central control circuitry can be incorporated directly into or associated with other goods that previously lacked locating abilities. The invention&#39;s ability to be incorporated into a multitude of different goods would allow the wide spread dissemination and application of locating technology.

Description:
CROSS-REFERENCES TO RELATED APPLICATIONS 
     Not Applicable 
     STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT 
     Not Applicable 
     REFERENCE TO A “MICROFICHE APPENDIX” 
     Not Applicable 
     BACKGROUND 
     1. Field of the Invention 
     The present invention relates to the field of detection and location devices and methodologies employing such devices, in particular, for those systems and devices which are used to detect and locate an object or objects, particularly remotely located objects whose location is unknown and sought by the user of the invention. 
     2. Description of the Related Art 
     In today&#39;s world, with the individual&#39;s increasing accumulation of possessions, and the progress of science and commerce constantly creating new consumer goods, it is increasingly difficult for the individual to keep track of or manage his or her possessions. The continued reduction in size of many of consumer goods containing electrical circuitry makes it easier for the individual to misplace these possessions, with a corresponding increase in difficulty in finding said misplaced possessions. Once, the haven of the lost only belonged to misplaced or mislaid glasses, keys, wallets, gloves, or other small personal items, but now the gates have opened to encompass a multitude of sophisticated electronic devices of reduced size such as portable phones, cellular phones, hand-held computers, personal calendar/diaries, remote controls for automobiles, entertainment devices and their associated remote controls, and the like. Today&#39;s individual places great reliance on his or her electronic goods, and a temporary or permanent loss of these goods can cause great impairment to that individual and his or her ability to effectively function in today&#39;s society. 
     There is a need for a means by which an individual can find such misplaced or waylaid items quickly and efficiently. Much of the prior art has focused on transponder/receiver technology in which a hand-held device, large enough so that it cannot be easily lost in the first place, is activated by the individual looking for the undetectable item. Upon activation, the hand-held device would emit a signal that would be detected by a receiver attached to or incorporated into the said misplaced item prior to becoming misplaced. Upon receipt of said signal, the receiver would activate its own signal generator, such as a light or sound emitter, to alert and guide the operator to the lost device&#39;s location. 
     The prior art location apparatus would use ultrasound, infrared, radio frequency and the like for transmission/reception as a means to provide communication between transmitter and the receiver. The various types of circuitry employed therein are well known to those versed in the art. 
     The U.S. Pat. No. 5,939,981 issued to Renny, U.S. Pat. No. 4,476,469 issued to Lander and U.S. Pat. No. 5,638,050 issued to Sacaa address the use of a wireless communication system comprised of a sending unit and a responding unit wherein a button on the sending unit causes the transmission of a fixed code that will be responded to by a particular responding unit. 
     What has not been adequately addressed by the prior art are those systems, means and apparati which would enhance the commercial viability of the location art. The issue that needs to be addressed is the allowance for the full realization of the commercial potential of the genre of the location art as a whole, not the specific means or methodology for location. What is needed is the universal capability of allowing a locating system to have a programmable/reprogrammable ability to reset a communication link between a control unit and a response unit that is connected to or made a part of the item sought to be located. This ability to program/reprogram would allow an item with a response unit to be easily integrated with one or more control units. This universal programmable/re-programmable aspect of such location systems and methods would greatly enhance the probability that manufacturers of consumer devices would utilize the invention knowing that their products would not have a single fixed response communication link, but could easily be programmed and reprogrammed indefinitely to fit that individual consumer&#39;s location protocol. Thus, the consumer could buy a multitude of the same product or a multitude of different products, without losing the ability to find any of them when they were lost. 
     SUMMARY OF THE INVENTION 
     This invention is a universally programmable/re-programmable locating system and method, whereby the invention has a central control unit that can interact singularly or in combination with a multitude of response devices. Each response unit, either built into or otherwise associated with a searchable item, has the capability of having its communications linked to a central control unit that is easily programmed/reprogrammed. In this manner, an individual response unit can be changeably assigned to a specific actuator of a specific central control unit. This aspect also inversely allows the assignment of a response device to a specific actuator button located on a multitude of central control units. 
     This aspect of the invention further allows a response unit, either sold as a separate item or incorporated as part of a consumer good, to be easily assigned by the consumer to a specific setting on the individual consumer&#39;s specific central control unit which may or may not be sold in conjunction with that particular response unit or that consumer good. At the same time, a response unit could be sold with a central control unit, both of which could be coordinated with other response units and central control units obtained at different times. 
     It is an object of the invention to allow the user to easily program the communication relationship between the central control unit and the response unit. 
     It is another object of the invention to allow a response unit to be assigned to several central control units. 
     It is a further object of the invention to enhance the commercial viability of the location art by permitting the response units built into one particular type of commercial goods to have the ability to be programmed in several different communication relations with a single central unit, thus allowing multiple purchases by a single consumer without losing the locating ability of any one specific good. 
     It is yet another object of the invention to enhance value and the resale capability of a consumer good associated with a response unit because of its universal transferability. 
     It is yet a further object of the invention to enhance the art of location systems in standardizing the response device which is no longer fixedly set to a specific communications relationship to a central control device. 
     It is yet another object of the invention to allow a user of the invention to purchase a device that is a subcomponent of goods, the subcomponent containing the response unit, thus allowing the good to acquire the location/detection capability of the subcomponent. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The novel features that are considered characteristic of the invention are set forth with particularity in the appended claims. The invention itself, however, both as to its structure and its operation, together with the additional object and advantages thereof, will best be understood from the following description of the preferred embodiment of the present invention when read in conjunction with the accompanying drawings wherein: 
     FIG. 1 depicts a partial cut-away perspective view of the central control unit. 
     FIG. 2 depicts a block diagram of the elements of the central control unit. 
     FIG. 3 depicts a partial cut-away perspective view of the response unit. 
     FIG. 4 depicts a block diagram of elements of the response unit. 
    
    
     LISTING OF THE ELEMENTS OF THE FIGURES 
       1 ) the invention 
       10 ) central control unit 
       11 ) plurality of actuator switches 
       12 ) mode switch 
       13 ) electrical jack 
       14 ) light emitting source 
       15 ) sound emitting source 
       16 ) power source 
       20 ) proximity detection subsystem, generally 
       21 ) duplexer 
       22 ) antenna 
       23 ) receiver 
       24 ) signal strength indicator 
       25 ) LED drivers 
       26 ) LEDs 
       27 ) electric horn 
       28 ) tone generator 
       30 ) universal programming system 
       31 ) mode sense unit 
       32 ) output shift register 
       33 ) remote selector 
       34 ) synchronize pattern generator 
       35 ) output clock source 
       36 ) transmitter 
       37 ) remote decoder 
       40 ) response unit 
       41 ) response unit body 
       42 ) power source 
       43 ) attachment means 
       44 ) antenna 
       45 ) duplexer 
       46 ) receiver 
       47 ) transition detector 
       48 ) power control switching 
       49 ) data synchronizer and clock source 
       50 ) input shift register 
       51 ) mode detector 
       52 ) ID storage 
       53 ) ID Compare 
       55 ) transmitter 
       56 ) tone generator 
       57 ) horn 
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     The-present invention, programmable universal locating system and method, generally denoted by numeral  1 , is comprised of two apparati, a central control unit generally denoted by numeral  10 , and a response unit generally denoted by numeral  40 . 
     As shown in FIG. 1, the preferred embodiment of the central control unit  10  would be a hand-held unit with a surface featuring a plurality of actuator switches  11 . The surface would also feature a light emitting source generally referenced as numeral  14 , such as LEDs (Light Emitting Diode) or the like, for indicating the relative distance between the central control unit  10  and a remotely placed response unit  40 . In another embodiment of the central control unit  10 , in lieu of or in addition to the light-emitting source  14 , a sound-emitting source, generally referenced by numeral  15 , such as a piezo horn, and its operating circuitry, could be used as well. The sound emitting device  15  could be heard by the operator through a cluster of apertures that are placed on the unit. 
     The surface of the unit would further support a mode selector switch  12  as well as an electrical connection jack  13  for reversibly connecting an external power supply or a external recharger to the internal power supply  16  of the central control unit  10 . 
     The unit would encompass electronic circuitry which is connected to the power source  16 , the plurality of actuator switches  11 , the mode selector switch  12 , the electrical connection jack  13 , and the light emitting source  14  or sound emitting device  15 . 
     In an alternative embodiment, the physically manipulated actuator switches could be replaced or supplemented with voice-activated or electronically-initiated switching circuitry. 
     In another embodiment of the invention  1 , the central control unit  10  can also be embodied as an integral part of another good. For example, the circuitry of the central control unit  10  could be incorporated into circuitry of a power source charging unit that is used to charge the internal power source of other goods. The power source charging unit could have the external devices of the central control unit circuitry (e.g., the plurality of actuator switches, mode selection switch, etc). In this manner, the charging unit would have all the primary capabilities of the central control unit, while the goods, which the charging unit is used for, could have the circuitry of the response unit  40 . In this other embodiment, the charging unit, such as a battery charger for cell phones, would allow the operator to locate the lost or misplaced goods, such as cell phones that are recharged by a battery charger. 
     The appearance and construction of the central control unit  10 , either as a stand-alone device or as a feature that is incorporated in other goods, can vary widely since the ability to construct the device with a wide variety of “off-the-shelf” componentry is well known to those versed in the art. 
     As shown in FIG. 2, the block diagram of the central control unit  10 , there are two basic subsystems to the central control unit  10 . The first subsystem, the proximity detection unit, is generally referenced by numeral  20 . The second subsystem, the universal programming system, is generally denoted by numeral  30 . 
     The proximity detection unit  20  is comprised of a duplexer  21 , a receiver  23 , a signal strength indicator  24 , and a light emitting  14  or sound-emitting  15  source. The duplexer  21 , receives and transmits Radio Frequency (“R/F”) signals (“radio waves”) through its antenna  22 . The duplexer  21 , in filtering all the R/F signals that its antenna  22  receives, will only allow those R/F emissions which are of a certain frequency or within a certain frequency range to pass through to the receiver  23 , i.e. transmissions from a remote unit  40 . 
     Once the R/F signal is sent to the receiver  23  by the duplexer  21 , the receiver  23  transforms the R/F signal into an electrical signal. This electrical signal is passed to the signal strength indicator  24 , which reads strength and intensity of the electrical signal sent to it. Based on the strength of the transformed R/F signal, the signal strength indicator  24  sends an electronic signal to the LED drivers  25  whose circuitry powers up the light-emitting source  14  in the preferred embodiment (LEDs)  26 . The LED drivers  25 , in accordance with the intensity of the electrical signal received from the signal strength indicator  24 , cause the LEDs  26  to give off a visual signal corresponding in intensity to the strength of the originally received R/F signal, either through brightness, or if the LED driver  25  incorporated a strobe circuit, through altering the frequency of flashing of the LEDs to indicate to the operator the relative proximity of the central control unit  10  to the response unit  40 . 
     In an other embodiment, the signal strength indicator could also send an electrical signal to a tone generator  28  that would activate an electrical horn  27  or other sound emission device to give off an audible signal, that would also correspond in intensity to the strength of the received R/F signal so as to indicate to the operator the relative proximity of the central control unit  10  to the response unit  40 . 
     The second subsystem, the universal programming system  30 , which provides for activation of the programming through actuator switches  11 , has a mode selector switch  12  that sets the central control unit  10  for either actuating or programming a selected response unit  40 . The mode selector switch  12  is connected to a mode sense unit  31 , which activates the output shift register  32  for operation into programming or activator modes. When the desired mode is set by the mode sense unit  31  for synchronizing the communication link of at least one actuator switch within the plurality of actuator switches  11 , also identified as a remote select  33  of the central control unit  10 , to at least one response unit  40 , the mode sense unit  31  coordinates the circuitry for the output shift register  32 , the synchronize pattern generator  34 , the output clock source  35  and the transmitter  36 , for the accomplishment of that purpose. The activation of a selected actuator sends forth an electrical signal to the remote decoder  37  which translates the signal into binary code for transmission to the output shift register  32 . The output shift register  32  assembles the signals from the synch pattern generator  34 , the mode sense unit  31  and the remote decoder  37  into a serial bits stream (SBS) signal. 
     This SBS signal has three distinct fields containing bit information: synchronize, mode and identification. The synchronized field containing data from the synchronize pattern generator  34  is used to allow the response unit  40  upon reception to align its data collection circuit with an incoming SBS R/F signal from the central control unit  10 . The mode field contains data bits from the mode sense unit that establish with the response unit  40  the desired mode of operation. The identification field contains the bit pattern generated from the electrical signal from the remote decoder  37  that is specific to a particular actuator. 
     The output shift register  32  also uses a square wave signal made by the output clock source  35  which is used to time the transmission of the assembled signal. The square wave is what allows the coordination between the central control unit  10  and response unit  40 . In this manner, R/F signal frequencies, which are limited in their ease of use and capacity, are not used to set the coordination between selected actuator switch and the chosen response units  40 . Once the signal is fully assembled, the output shift register  32  sends the SBS electric signal to the transmitter  36  which transforms the SBS electrical signal into a SBS R/F signal. This SBS R/F signal is send to the duplexer  21 , which blocks the SBS R/F signal from being received by the proximity detection subsystem  20  and emits the SBS R/F through the antenna  22 . In the program mode, the emitted R/F SBS signal is a low level signal so as to only program/reprogram that response unit  40  which is in close proximity (e.g. adjacent to) to the operator activated central control unit  10  during the operation of the invention in the programming mode. 
     After at least one response unit  40  has been programmed/reprogrammed to be activated by at least one actuator switch of at least one central control unit  10 , the mode selector switch  12  can then be set for actuator mode . In this mode, the mode sense unit  31  coordinates the synchronize pattern generator  34 , the output clock source  35  and the output shift register  32 . The activation of the selected actuator switch will cause the remote decoder  37  to emit a signal to the output shift register  32 . The output shift register  32  will then assemble an SBS signal bearing bit information from the synchronize pattern generator  34 , the mode sense unit  31  and the remote decoder  37 . The SBS signal fields contain information similar to the programming signal, except the information in the mode field contains activation, not programming code, for the response unit  40  that was previously coordinated with the activated actuator switch. 
     The output shift register  32  then sends the electrical SBS signal through the transmitter  36 , duplexer  21 , and antenna  22  which converts the electrical signal into an R/F transmission. Once the R/F signal is picked up by the remotely located or lost coordinated response unit  40 , the response unit  40  is activated to send a R/F signal back to the central control unit  10  which translates that signal based on its received strength into an audible and/or visible signal which is readily understood by the operator as being a general indication of the proximate distance between the central control unit  10  and the response unit  40 . 
     As shown in FIG. 3, the response unit  40  has a response unit body  41  that encompasses the circuitry which is connected to power source  42  also housed in the response unit body. The power source  42  can be a battery, a rechargeable battery or a direct linkup to an outside power source or to the power source of the consumer good to which the response unit  40  is attached or integrated into. For the attachment embodiment of the response unit  40 , the response unit body can utilize several different attachment means  43  from hook and loop device, adhesives, clips, straps and the alike. 
     The response unit  40  could also be incorporated as a subcomponent of another good (cell phone) as could be the central control unit  10 . In this manner, response unit  40 , once integrated into the good, would afford the good all the primary location/detection aspects of the invention  1 . The response unit  40  could be integrated into the goods during manufacture or during post-manufacture of the good. For example, a battery pack, removable design cover or carrying case for a cell phone could incorporate the response unit  40  to afford the location/detection benefits to a cell phone that was not originally made or designed to have such benefits. Further, the response unit could be built into a disposable power sources such as batteries or capacitors utilized by goods to confer the benefits of the invention  1  upon those goods which did not originally contain or otherwise incorporate a response unit circuitry. 
     FIG. 4 shows the block diagram of the response unit  40  which operates in two modes: program and locate. The incoming R/F SBS signal from one central control unit  10 , is received by the antenna  44  of the response unit  40  and is conducted to the duplexer  45 . If the received signal is within a certain preselected R/F frequency range, then the signal is passed to the receiver  46  which transforms the R/F signal into an-electronic signal. The issuance of an electronic signal is sensed by a transition detector  47 . The transition detector  47  activates the power control switching  48 , which is connected to an external power source, such as that of the good to which the response unit  40  is attached to or otherwise incorporated into, or a battery  42 . The power control switching  48  normally has the circuitry of the response unit  40  in a low power/low drain state (i.e. only the receiver and duplexer are powered to operating states). The receipt of the proper R/F signal by the response unit  40  causes the power control switching  48  to fully power up the response unit&#39;s circuitry from a low power-energy saving state. 
     The energy signal also activates the data synchronizer and clock source  49  whose clock issues a square wave signal into the input shift register  50 . The clock of the data synchronizer  49  and that of the central control unit&#39;s output clock source  35  are synchronized as to have a corresponding square wave signal that allows the response unit  40  to recognize the incoming signal as being from the central control unit  10 . The response unit  40  is able to recognize the incoming signal as being from a central control unit  10 , to which it was programed, when the incoming signal is received by the input shift register  50 . At that time, the input shift register  50  receives a square wave generated by the data synchronizer and clock source  49 . If this square wave matches the square wave used by the central control unit  10 , then the input shift register  50  will be able to process the incoming signal. If the received signal is background noise or an other signal that was not assembled through the use of a matching square wave, then the input shift register  50  will not process that received signal. 
     During the input shift register  50  processing of the received signal, the bit data contained in the mode field of the incoming signal is sent to the mode detector  51  of the response unit  40 . The mode detector  51  then sends a signal to the ID storage  52  and the ID compare  53  to set them for either program or actuator functions. The input shift register  50  also sends the bit data from the identification field as a signal to the ID storage  52  and the ID compare  53 . If the ID storage  52  and the ID compare  53  are set for the actuator function, the ID compare  53  compares the identification field data with identification data stored in the ID storage  52 . If there is a match, a signal is sent to the transmitter  55  which sends a R/F signal out through the duplexer and antenna to the remote central control unit  10  which sent the received SBS signal in the first place. The transmitter  55  also sends a signal to the tone generator  56  which activates the horn  57 . The horn gives off an audible signal to guide the operator to find the response unit  40  associated with the lost object. If there is no match, no R/F signal or audible/light signal is emitted from the response unit  40  and the response unit returns to a powered down state. 
     The central control unit  10 , upon receipt of R/F signal from the response unit  40 , as described above, produces a signal which may be audible or visual or both, that is understandable and would indicate to the operator the approximate distance between the central control unit  10  and response unit  40 . After a predetermined time period, the transmitter will cease transmitting and the response unit  40  will return to its low power state. 
     If the ID storage  52  and the ID compare  53  are set for the program function, the ID storage  52  will accept the identification bit data from the incoming SBS signal and store them either for the first time in programming of the response unit or will reprogram the response unit  40  by displacing earlier stored identification bit information with new identification bit information from the received SBS signal. The ID storage  52  unit will then send an electrical signal to the tone generator  56  which activates the horn  57 . The horn  57  gives off an audible signal to inform the operator that the response unit  40  has been programmed or reprogrammed by accepting the identification code. 
     While these descriptions directly describe the above embodiments, it is understood that those skilled in the art may conceive modifications and/or variations to the specific embodiments shown and described herein. Any such modifications or variations that fall within the purview of this description are intended to be included therein as well. It is understood that the description herein is intended to be illustrative only and is not intended to be limitative. Rather, the scope of the invention described herein is limited only by the claims appended hereto.