Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1986-02-14
1987-04-21
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
250214R, 250221, 340555, 446297, 446397, G01V 904, H01J 4014
Patent
active
046599193
ABSTRACT:
A noise-generating toy includes first and second optical sensors to detect the intensity of light in first and second optical fields, respectively. The sensor signals serve as inputs to a comparator which provides as an output a differential signal indicative of the difference between the sensor outputs. The comparator output drives an oscillator which generates audio signals in response to the differential in the intensity of light. The oscillator drives one or more speakers with the audio signals, and the speakers use the audio signals to produce audible sound or noise.
REFERENCES:
patent: 3150461 (1964-09-01), Grist
patent: 3191048 (1965-06-01), Cowen
patent: 3274729 (1966-09-01), Refabert
patent: 3343281 (1967-09-01), Greer, Jr.
patent: 3443338 (1969-05-01), Collins
patent: 3444384 (1969-05-01), Horeczky
patent: 3631434 (1971-12-01), Schwartz
patent: 3702937 (1972-11-01), Browning
patent: 3863239 (1975-01-01), Campman
patent: 4085411 (1978-04-01), Genesi
patent: 4185192 (1980-01-01), Wagner
patent: 4199753 (1980-04-01), Gontowski, Jr.
patent: 4221927 (1980-09-01), Dankman et al.
patent: 4317992 (1982-03-01), Stauffer
patent: 4403142 (1983-09-01), Kondo
LandOfFree
Optical sensing circuit for audio activation of toys does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical sensing circuit for audio activation of toys, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical sensing circuit for audio activation of toys will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-753878