Encoder

Details Encoder Encoder

1981-04-23

1985-03-26

Sloyan, T. J.

Communications: electrical

Audible indication

Percussion-type sound producer

250231SE, 250237G, H03K 1318, G01D 534

Patent

active

045076472

ABSTRACT:
An encoder having an optical measuring part establishing a vernier relationship between a code plate and a line sensor, and counters for obtaining a course reading from time serial output signals of the line sensor and a fine reading from the vernier relationship. Correction data including a change component in a magnification of a lens system are obtained from a counter. The correction data and the fine reading are supplied to a converting circuit to provide a corrected fine reading.

REFERENCES:
patent: 2656106 (1953-10-01), Stabler
patent: 3096441 (1963-07-01), Burkhardt
patent: 3330964 (1967-07-01), Hobrough et al.
patent: 3578980 (1971-05-01), Decker et al.
patent: 3591841 (1971-07-01), Heitmann et al.
patent: 3599004 (1971-08-01), Grendelmeier

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