Clock signal producing apparatus

Details Clock signal producing apparatus Clock signal producing apparatus

1984-11-05

1986-05-06

Goldberg, E. A.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

358293, G01D 942

Patent

active

045875316

ABSTRACT:
Apparatus is disclosed for producing clock signals which are used to precisely control the modulation of a light beam by an acousto-optic modulator as it is line scanned by a moving mirror. The apparatus employs a set of spaced detectors which are located in the scanned beam path and respectively produce start-of-scan (SOS) and end-of-scan (EOS) signals. An oscillator which includes a delay line is responsive to the SOS and EOS signals to produce the clock signals. The delay line coupled to a NOR gate and flip-flop produces a delay line with the precise period .tau..

REFERENCES:
patent: 3848087 (1974-11-01), Carrell
patent: 3993957 (1976-11-01), Davenport
patent: 4103251 (1978-07-01), Glick
patent: 4134073 (1979-01-01), MacGregor
patent: 4204233 (1980-05-01), Swager
patent: 4316148 (1982-02-01), Kaminski
patent: 4320420 (1982-03-01), Rider
patent: 4400740 (1983-08-01), Traino

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