Remote control security system

Details Remote control security system Remote control security system

1992-04-10

1995-08-15

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

34082534, 34082569, 380 21, H04Q 100

Patent

active

054423414

ABSTRACT:
A remote control keyless security system is presented herein for remotely controlling locking means mounted on a vehicle. A receiver is mounted on a vehicle. A remote transmitter includes a plurality of switches each representative of a control function to be performed and circuitry responsive to actuation of one of the switches for transmitting a digital signal having a security code, a sequence control code adapted to be sequentially changed in response to each actuation of a switch and a function code. The transmitter changes the sequence control code after each operation with the change being dependent upon information contained in the security code. The received security code is compared with a stored receiver security code. Circuitry responds to each occurrence of a match between the security codes for reading a stored sequence control code and changing it to define an updated sequence control code having a value dependent upon information contained in the stored security code. The updated sequence control code is compared with the received sequence control and an output indication is provided in dependence upon the comparison.

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