Movement detecting apparatus and method

Details Movement detecting apparatus and method Movement detecting apparatus and method

1977-08-29

1980-05-13

Truhe, J. V.

Electricity: motive power systems

Positional servo systems

Digital or numerical systems

318640, 318653, 324 78D, 324115, G05B 1928

Patent

active

042030633

ABSTRACT:
Apparatus and method for detecting the movement of a control device (such as a tuning knob) for controlling the input to a controlled device (such as a frequency synthesizer or display) operating in discrete or digital steps. The rotational direction of a single tuning device such as a "tuning" knob causes an increase or decrease of the frequency. The rate of movement of the positioning device determines frequency bandswitching in differing degrees of coarse to fine tuning modes. The utilization of rotational direction and rate of the device provides a single control for all tuning functions.
The apparatus and method is useful in both open and closed (servo) loop systems.

REFERENCES:
patent: 3622855 (1971-11-01), Hodgin et al.
patent: 3665323 (1972-05-01), Peterson
patent: 3914677 (1975-10-01), MacWade et al.
patent: 3990007 (1976-11-01), Hohhof
"Synthesizer Designed for Home Use" Electronics, 4/14/77 pp. 151-152. _

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