Self-monitoring optical encoder for wavelength division multiple

Details Self-monitoring optical encoder for wavelength division multiple Self-monitoring optical encoder for wavelength division multiple

1995-11-16

1997-09-09

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250566, 25023118, 341 13, G06K 710

Patent

active

056659741

ABSTRACT:
A self-monitored optical sensor having a code plate having a plurality of tracks disposed thereon. Each of the tracks comprises a pattern of reflective and absorptive segments that form a code that is indicative of a discrete position of the code plate. The code plate further includes a monitoring track that encodes a number of expected absorptive or reflective segments in the code plate at each discrete position. A detector circuit compares the number of absorptive or reflective segments detected and the number of expected absorptive or reflective segments in order to determine if there is a fault in the code plate.

REFERENCES:
patent: 2966671 (1960-12-01), Abbott et al.
patent: 3757090 (1973-09-01), Haefeli et al.
patent: 3831009 (1974-08-01), McMillin
patent: 3842401 (1974-10-01), Smith, Jr. et al.
patent: 3878399 (1975-04-01), Higuchi et al.
patent: 3891143 (1975-06-01), Haeusler
patent: 3913094 (1975-10-01), Wootton, III
patent: 4146873 (1979-03-01), Yamanaka et al.
patent: 4173752 (1979-11-01), Yamanaka
patent: 4315252 (1982-02-01), Tagami
patent: 4384204 (1983-05-01), Tamaki et al.
patent: 4597081 (1986-06-01), Tassone
patent: 4633224 (1986-12-01), Gipp et al.
patent: 4933673 (1990-06-01), Ishizuka et al.

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