Electronical unlocking method and system
First Claim
1. An electronic unlocking system for operating an unlocking mechanism to unlock, for instance, a door, which comprises:
- (a) a switch for generating an unlocking signal including a series of on-time intervals and off-time intervals when closed or opened manually;
(b) a first counting unit connected to said switch for counting respective time intervals during which said switch is kept turned on and outputting signals indicative of on-time interval values X;
(c) a second counting unit connected to said switch for counting respective time intervals during which said switch is kept turned off and outputting signals indicative of off-time interval values Y;
(d) a memory unit connected to said switch for storing respective reference values Xo/Yo and outputting the respective reference values in response to respective on-time signals output by said switch;
(e) a calculating unit connected to said first and second counting units for dividing respective numerical values X output by said first counting unit by respective numerical values Y output by said second counting unit and outputting signal indicative of respective divided values X/Y;
(f) a comparing unit connected to said calculating unit and said memory unit for comparing the respective numerical values X/Y calculated by said calculating unit to the respective reference values Xo/Yo stored in said memory unit and outputting signals whenever the respective calculated values X/Y agree with the respective reference values Xo/Yo;
(g) a third counting unit connected to said comparing unit for counting the number of the signals output by said comparing unit and outputting an unlocking command signal when the number counted by said third counting unit reaches a predetermined value; and
(h) an unlocking actuator connected to said third counting unit for operating the unlocking mechanism when energized in response to the unlocking command signal output from said third counting unit,whereby an unlocking mechanism can be operated by repeatedly depressing and releasing a single switch in accordance with predetermined on-time and off-time interval relationships.
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Accused Products
Abstract
An electronical locking/unlocking system by which a door can be unlocked when a single switch is depressed repeatedly by an operator in time with a musical rhythm which he knows or in accordance with a Morse-type code. The electronical locking/unlocking system according to the present invention comprises a single switch for generating a predetermined series of on-time interval and off-time interval signals, a first counting unit for counting the on-time intervals, a second counting unit for counting the off-time intervals, a memory unit for previously storing reference ratios of on-time intervals to off-time intervals, a calculating unit for dividing the counted on-time intervals by the counted off-time intervals, a comparating unit for comparing the calculated values with the reference values, a third counting unit for counting the number of accurate on/off ratios up to a predetermined number, and an unlocking actuator.
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Citations
27 Claims
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1. An electronic unlocking system for operating an unlocking mechanism to unlock, for instance, a door, which comprises:
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(a) a switch for generating an unlocking signal including a series of on-time intervals and off-time intervals when closed or opened manually; (b) a first counting unit connected to said switch for counting respective time intervals during which said switch is kept turned on and outputting signals indicative of on-time interval values X; (c) a second counting unit connected to said switch for counting respective time intervals during which said switch is kept turned off and outputting signals indicative of off-time interval values Y; (d) a memory unit connected to said switch for storing respective reference values Xo/Yo and outputting the respective reference values in response to respective on-time signals output by said switch; (e) a calculating unit connected to said first and second counting units for dividing respective numerical values X output by said first counting unit by respective numerical values Y output by said second counting unit and outputting signal indicative of respective divided values X/Y; (f) a comparing unit connected to said calculating unit and said memory unit for comparing the respective numerical values X/Y calculated by said calculating unit to the respective reference values Xo/Yo stored in said memory unit and outputting signals whenever the respective calculated values X/Y agree with the respective reference values Xo/Yo; (g) a third counting unit connected to said comparing unit for counting the number of the signals output by said comparing unit and outputting an unlocking command signal when the number counted by said third counting unit reaches a predetermined value; and (h) an unlocking actuator connected to said third counting unit for operating the unlocking mechanism when energized in response to the unlocking command signal output from said third counting unit, whereby an unlocking mechanism can be operated by repeatedly depressing and releasing a single switch in accordance with predetermined on-time and off-time interval relationships. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 21, 22, 23, 24, 25, 26, 27)
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17. A method for unlocking a door according to a predetermined coded rhythm, comprising the steps of:
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(a) moving a switch between an on position and an off position to define a plurality of on intervals and off intervals; (b) measuring the durations of each on interval and a corresponding off interval; (c) determining the ratio of on duration to off duration for each on-off cycle of switch movement; (d) comparing each determined on-off ratio to a corresponding predetermined ratio value; and (e) unlocking a door if a predetermined number of consecutive determined on-off ratios match the corresponding predetermined ratio values. - View Dependent Claims (18, 19, 20)
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Specification