LEARN MODE FOR REMOTE TRANSMITTERS

摘要

PURPOSE: A remotely controllable system for use in or about a vehicle which is capable of learning a new authorized is provided to discriminate and eliminate strat or unwanted signals or transmitters from being programmed in the system. CONSTITUTION: In an auto security system(25), Vehicle power is supplied to the system via a reverse protection diode and regulated for the system usage by filter and regulator(27). The signal transmitted by transmitter is sent through antenna of transmitter and is received by system antenna(17). The signal is detected by receiver(19) and converted back into a code word which is the same code word that was assembled by encoder of transmitter. The code word is passed to a controller(23) which extracts the identification word therefrom and compares this identification word with the authorized identification words stored in a memory, such as EEPROM(21), which is accessible or integral to the controller. If the identification word is identical to one of the stored authorized identification words in EEPROM, then the command received within that code word or appended to that code word is processed and executed by controller.