Motion encoder

Details Motion encoder Motion encoder

2007-02-27

2007-02-27

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C341S013000

Reexamination Certificate

active

10632359

ABSTRACT:
A motion encoder for use with a rotating key. The motion encoder allows the direction of rotation to be determined by providing elements having different characteristics for the transmission of a IR beam. These elements are arranged in a pattern that allows an IR beam impinging on the elements to trace a path detected as the rotating key turns. The beam being detected after changes in the reflected or transmitted beam indicating the direction of rotation of the beam.

REFERENCES:
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patent: 5243187 (1993-09-01), Hettlage
patent: 5748181 (1998-05-01), Fu et al.
patent: 6351657 (2002-02-01), Yamada
patent: 2002/0005820 (2002-01-01), Son et al.
patent: 0096476 (1983-12-01), None
patent: 0210825 (1987-02-01), None
patent: 0901262 (1999-03-01), None
patent: 2297840 (1996-08-01), None
patent: 08029202 (1996-02-01), None
Patent Abstracts of Japan; “Rotary Encoder”; Pub. No. 08029202, Pub. Date Feb. 2, 1996.

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