Laser recorder reproducing a picture having half-tones of high a

Details Laser recorder reproducing a picture having half-tones of high a Laser recorder reproducing a picture having half-tones of high a

1981-04-29

1983-05-17

Schreyer, Stafford D.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

346 76L, 358298, G01D 1510

Patent

active

043842976

ABSTRACT:
A laser recorder in which pictures with gradations at equal density intervals are reproduced with a high accuracy. An input analog video signal is sampled with a sampling pulse at a predetermined sampling rate. For each value of the sampled input signal, a number of high frequency pulses are outputted to modulate a semiconductor laser. The high frequency pulses are outputted so as to be distributed substantially in equal numbers on either side of the center of each sampling period.

REFERENCES:
patent: 3294896 (1966-12-01), Young
patent: 3656175 (1972-04-01), Carlson et al.

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