Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1997-09-08
2000-07-11
Le, Que T.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
25023116, 318439, G01D 534
Patent
active
060876549
ABSTRACT:
Apparatus and method for producing a resultant output signal from at least two output signals generated by an encoder. The apparatus and methods include: (a) generating a first output signal from the encoder; (b) generating a second output signal from the encoder; (c) applying the first output signal to the second output signal to produce the resultant output signal, wherein the resultant output signal includes a resultant number of waveform cycles per mechanical cycle of the encoder, and wherein the resultant number of waveform cycles is determined by the waveform cycles of the first and second output signals. Another apparatus and method involves varying the output of at least one emitter in response to an output signal of the encoder, to generate a particular resultant or application signal. A further apparatus and method involves varying the output characteristic of at least one photo-detector in response to an output signal of the encoder, to generate a particular resultant or application signal.
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Le Que T.
Luu Thanh X.
Opto Generic Devices Inc.
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