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:
Jun. 01, 1999
Filed:
Nov. 16, 1994
Masamichi Ohshima, Tokyo, JP;
Takeshi Makita, Kawasaki, JP;
Shuntaro Aratani, Machida, JP;
Kazumi Suga, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image processor includes a quantizing unit which quantizes input image data to data of at least three or more levels. A memory stores the quantized data on a picture unit basis, and an output unit outputs the stored image on the picture unit basis. The quantizing unit quantizes the image data of a present picture in accordance with the quantized data of a previous picture stored in the memory, and quantizes the input image data of one pixel to the data of three or more levels by using a plurality of threshold values each including an upper threshold value, a standard threshold value and a lower threshold value.