The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 1989
Filed:
Jul. 26, 1988
Applicant:
Inventor:
Hitoshi Arai, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
346108 ; 346 / ; 358280 ; 358296 ; 358298 ;
Abstract
An image processing apparatus has a semiconductor laser for modulating a light beam, a beam detector for detecting the beam, a selector for selecting an output from a digital data input unit or a black signal generator circuit, a comparator for pulse-width modulating an output from the selector received through a D/A converter, and a video enable (VE) signal generator circuit for generating a VE signal for switching the selector.