Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1987-08-31
1989-12-19
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
318577, G05B 100, G05B 2102
Patent
active
048884782
ABSTRACT:
In an optical pattern tracer which uses sample and hold circuits for signal processing filtering of the signal to reduce undershoot can be attained by manipulation of the sample and hold processing circuits. The present application varies the holding capacitor to produce a varied low pass filter effect.
REFERENCES:
patent: 3727120 (1973-04-01), Jewell et al.
patent: 4641021 (1987-02-01), Vali
patent: 4658127 (1987-04-01), Ferrari
McGowan Steven J.
Nelms David C.
Oldham Edward H.
Westinghouse Canada Inc.
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