Keyless lock device for a car

Details Keyless lock device for a car Keyless lock device for a car

1999-02-10

2000-07-25

Pope, Daryl C.

Communications: electrical

Land vehicle alarms or indicators

Of burglary or unauthorized use

3404255, 34082531, 34082532, 340539, B60R 2510

Patent

active

060941316

ABSTRACT:
A keyless lock device is disclosed, which has a master control unit installed in a car and a remote controller carried by a user. The master control unit has a processing unit connected to a centralized locking control unit of the car to lock and unlock the door of the car. A detection switch is installed in the door handle of the driver-side door of the car. The processing unit is connected to the detection switch to detect when the door handle is pulled. The master control unit transmits an acknowledgement signal when the door handle is pulled. The remote controller receives the acknowledgement signal and generates a re-acknowledgement signal encoded with a specific encrypted code for transmission. The re-acknowledge signal is then received by the master control unit to be recognized.

REFERENCES:
patent: 4983947 (1991-01-01), Mullen et al.

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