Incremental optical encoder system with addressable index

Details Incremental optical encoder system with addressable index Incremental optical encoder system with addressable index

1981-06-10

1983-10-18

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

340347P, H01J 314

Patent

active

044107986

ABSTRACT:
The circuitry required to obtain a ing that of the quadrature pair, the bits of a multibit binary word are gated with a coarse index taken from the code disc. The multibit binary word includes square waves already available in the multiplier and an additional bit obtained from a logical combination of the pair of quadrature signals.

REFERENCES:
patent: 4224515 (1980-09-01), Terrell
patent: 4268747 (1981-05-01), Becchi et al.

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