Communications: electrical – Continuously variable indicating – With meter reading
Patent
1982-05-26
1985-01-29
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
70278, E05B 4900, H04Q 300
Patent
active
044969481
ABSTRACT:
A system for initiating the operation of an electronically-operated device is disclosed. The system comprises a key unit having a code pattern mounted on a circle around the center thereof, a first rotating sensor eccentrically mounted with respect to the center of the key unit and adapted to scan the code pattern on the key unit and generate a first output signal which is representative of the code appearing on the key unit, a second sensor adapted to detect the rotational speed of the first rotating sensor and to generate a second output signal which is representative of the rotational speed of the first rotating sensor, a signal-processing circuit responsive to the first and the second output signals for generating a control signal which is independent of the rotational speed of the rotating sensor, and an electrically-operated device responsive to the control signal to perform a given function when a valid code is generated.
REFERENCES:
patent: 2793565 (1974-02-01), Smith
patent: 3733862 (1973-05-01), Killmeyer
patent: 3872435 (1975-03-01), Cestaro
patent: 4079605 (1978-03-01), Bartels
patent: 4189712 (1980-02-01), Lemelson
patent: 4354189 (1982-10-01), Lemelson
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