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:
Dec. 07, 2004
Filed:
Aug. 27, 2001
Roger Bucher, Zollikofen, CH;
Tsung-Yen Chen, Fremont, CA (US);
Oridus, Inc., Fremont, CA (US);
Abstract
A method and apparatus for transmitting image updates employing high compression encoding are described. New and old image pixel values are compared at corresponding coordinate positions. For coordinate positions where the values are significantly different, the new image pixel values are assigned to those coordinates unless the new image pixel value is equal to a predefined transparent pixel value. In that case, a pixel value resulting in a color imperceptibly different than the new image pixel value is assigned. On the other hand, for coordinate positions where the values are not significantly different, then the predefined transparent pixel is assigned to those coordinates. Because of the high occurrence of the transparent pixel value in many applications, the pixel values assigned in such a manner are suitable for high compression encoding and consequently, high speed transmission.