Patent ReferencesKeyless entry system for automatically operating automotive door locking devices without manual operation Vehicle security system based on two step communication range between transmitter and receiver Keyless access control device Procedure for operating a locking system for lockable objects Hands-free system for unlocking and/or opening an openable member of a motor vehicle Method for preventing misuse of transponders left inside a vehicle Door lock control apparatus for a vehicle Method of locating an enabling component containing a transponder, and a motor vehicle with a corresponding locator System and method for remote convenience function control having a rekey security feature Patent #: 6130622 InventorsAssigneeApplicationNo. 09540494 filed on 03/31/2000US Classes:340/5.61, Wireless transceiver340/5.64Wireless transmitterExaminersPrimary: Horabik, MichaelAssistant: Nguyen, Nam Attorney, Agent or FirmForeign Patent References
International ClassesG05B 1900G06F 700 G08B 2900 A04B 100 H04Q 900 AbstractA device for improving the security of a “hands-free” access system for a motor vehicle, the system comprising an identification device installed on the vehicle and able to control the locking the opening leaves of the vehicle, and at least one identifier intended to be worn or carried by a user and capable of setting up a remote exchange of data with the identification device so as to control the locking means, when the identification device has authenticated the identifier, the identification means being intended, after a locking command, to send an interrogation signal into the cabin of the vehicle and receive in response a “present” signal from each identifier still present in the cabin, wherein, when a “present” signal is received by the identification device, the identification device sends into the cabin an inhibit signal which is received and stored in memory by each identifier present in the cabin.Field of SearchWireless transceiverIncluding manual switching means Including timing means (e.g., clock) Wireless transmitter Including indicator Having manual control input Having indication of improper access Lockout or disable Vehicle door Power control or battery saving Based on received signal Frame based timing Address based Received signal includes power command Control based upon available power Time based Remote terminal Transmitter for remote control signal With code display at transmitter Vehicle equipment position control (e.g., seat, mirror, door, window, headrest, or headlamp) | |