Laser beam controller

Details Laser beam controller Laser beam controller

1991-03-04

1993-12-21

Coles, Jr., Edward L.

Facsimile and static presentation processing

Facsimile

Picture signal generator

358481, 358298, H04N 140, G01D 1500

Patent

active

052725464

ABSTRACT:
A laser beam controller comprises a basic pulse signal generating circuit, a delay circuit, a delay control circuit, a pulse generating circuit and a laser beam generator. The basic pulse signal generating circuit generates periodically occurring basic pulse signal. The delay circuit delays the basic pulse signal. The delay control circuit controls the delay time of the basic pulse in the delay circuit according to image data. The pulse generating circuit generates an output pulse having a width corresponding to the delay time of the basic pulse signal. The laser beam generator generates a laser beam for a duration corresponding to the width of the output pulse by said pulse generating circuit. According to the controller, any desired gradation of a pixel of the image is desirably produced.

REFERENCES:
patent: 4347523 (1982-08-01), Ohara
patent: 4914459 (1990-04-01), Mama et al.
patent: 4926263 (1990-05-01), Yokota
Patent Abstracts of Japan, vol. 13, No. 364 (E-805), Aug. 14, 1989 & JP-A-1 120 115 (Mita Ind. Co. Ltd.).

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