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:
Sep. 18, 2001
Filed:
Feb. 01, 1999
Masato Toho, Nakai-machi, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
Reversible encoding with a high compression rate is fast performed for images produced by a computer. The following processing is performed for each line. First, prediction is performed based on a first prediction method, it is determined whether the prediction value matches the pixel value of a target pixel, and if so, a code indicating the first prediction method is outputted. If a prediction value by the first prediction method does not match the pixel value of the target pixel, prediction values by second and subsequent prediction methods are obtained for the first time, and these values are compared with the pixel value of the target pixel. If there is a matching prediction value, a code indicating a corresponding prediction method is outputted. If the pixel value of the target pixel does not match any prediction values, a prediction error is outputted.