Electronic locking method and apparatus
First Claim
1. A method of unlocking a door, the steps comprising:
- operating a door opening actuator in a predetermined coded sequence to enter a code, said entered code uniquely and completely determined by operation of said door opening actuator;
detecting said predetermined coded sequence;
generating an electrical unlock signal upon detection of said predetermined coded sequence; and
unlocking said door responsive to said electrical unlock signal.
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Accused Products
Abstract
An electronic combination lock uses a single pair of contacts which are connected to a door opening actuator such that a code may be input into the electronic combination lock by sequentially moving the door opening actuator in a predetermined pattern. The device is especially suitable for use in car doors such that the appearance of a conventional car door is maintained, but the ease of entry with an electronic combination lock is provided. A detecting circuit detects whether the car door pushbutton or movable handle is moved in the correct timed sequence. The initial movement of the pushbutton or door handle is used for starting a timer running and initiating the supply of power to the detecting circuit. A pulse generator outputs a series of pulses which are fed into a pulse sequencer. The pulse sequencer is used for gating the switch position (open or closed) to one of a number of parallel disposed registers in a latching circuit. A code selector and decoder are used to determine whether the latched code is equivalent to the preprogrammed code. A lock sensing switch is used in the system to minimize power consumption.
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Citations
26 Claims
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1. A method of unlocking a door, the steps comprising:
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operating a door opening actuator in a predetermined coded sequence to enter a code, said entered code uniquely and completely determined by operation of said door opening actuator; detecting said predetermined coded sequence; generating an electrical unlock signal upon detection of said predetermined coded sequence; and unlocking said door responsive to said electrical unlock signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 26)
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11. An apparatus comprising:
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(a) a door having a manually operable door opening actuator and a door lock controlled by a door lock actuator; (b) a detecting circuit for detecting a code uniquely and completely determined by operation of said door opening actuator and for generating an unlock signal upon detection of a predetermined coded sequence of operation of said door opening actuator; and (c) an unlocking circuit for unlocking said door lock responsive to said unlock signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification