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:
Feb. 08, 2011
Filed:
Dec. 03, 2007
Hideki Takemura, Tokyo, JP;
Shigeru Fujita, Yokohama, JP;
Hiroki Horikoshi, Kawasaki, JP;
Akira Ichimura, Tokyo, JP;
Takeshi Kuga, Inagi, JP;
Hiroyuki Hosogoshi, Yokohama, JP;
Hideki Takemura, Tokyo, JP;
Shigeru Fujita, Yokohama, JP;
Hiroki Horikoshi, Kawasaki, 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 an error value represented by error data is a particular value, the error data is converted into compressed error data with a data volume less than that of the original error data.