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:
May. 15, 1990
Filed:
Dec. 12, 1988
Applicant:
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358458 ; 358298 ; 358456 ;
Abstract
An image processing apparatus of this invention includes a digital data output device for outputting bi-level image data, a bi-level processor for converting the bi-level image data into multi-level (e.g., 8-bit) image data, a multi-level processor for performing spatial filter processing with respect to the multi-level image data output from the bi-level processor, and a PWM circuit for processing the multi-level image data output from the multi-level processor using a pattern signal of a predetermined cycle and generating a PWM signal.