Door locking control apparatus

Details Door locking control apparatus Door locking control apparatus

2007-01-09

2007-01-09

Jackson, Stephen W. (Department: 2836)

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

Reexamination Certificate

active

10685138

ABSTRACT:
A control method and apparatus for a door-locking mechanism which includes an electrically-released latch, to lock the door closed. A processing unit sources first and second data streams each of a repeating string of binary data, the two strings being of the same bit length and bit rate, the processing unit also having two sensing inputs. A normally-open first switch is associated with the latch and connects the first data stream to the first sensing input other than when the latch is released, and a normally-open second switch is associated with the door and serves to connect the second data stream to the second sensing input so long as the door remains closed. A normally-closed third switch is also associated with the door and serves to link together the first and second sensing inputs when the door is not closed. The processing unit outputs a signal indicative of an error condition should the data stream which appears at either sensing input not be the expected stream.

REFERENCES:
patent: 4983950 (1991-01-01), Sunami
patent: 5240296 (1993-08-01), Kobayashi
patent: 5564761 (1996-10-01), Mizuki et al.
patent: 6547185 (2003-04-01), Erben et al.

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