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. 10, 2011
Filed:
Nov. 30, 2007
Hideki Takemura, Tokyo, JP;
Hiroki Horikoshi, Kawasaki, JP;
Shigeru Fujita, Yokohama, JP;
Akira Ichimura, Tokyo, JP;
Takeshi Kuga, Inagi, JP;
Hiroyuki Hosogoshi, Yokohama, JP;
Hideki Takemura, Tokyo, JP;
Hiroki Horikoshi, Kawasaki, JP;
Shigeru Fujita, Yokohama, JP;
Akira Ichimura, Tokyo, JP;
Takeshi Kuga, Inagi, JP;
Hiroyuki Hosogoshi, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image processing apparatus, a printing apparatus and an image processing method are provided which can perform quantization processing on image data at high speed based on an error diffusion method while at the same time avoiding degradations in a quality of printed images. When the error value represented by the error data is equal to or less than the reference value, at least a part of the data portion that can represent an error value in excess of the reference value is eliminated to compress the error data.