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:
Jul. 08, 2014
Filed:
Sep. 06, 2012
Chih Kai Chang, Taichung, TW;
Chih Kai Chang, Taichung, TW;
Orise Technology Co., Ltd., Hsinchu Science Park, TW;
Abstract
A method of fixed bit-rate image compression/decompression based on 2×2 image unit encodes an image that is divided into a plurality of 2×2 coding units. The method determines whether a 2×2 coding unit has one of first to seven man-made patterns. When the 2×2 coding unit has one of the first to seven man-made patterns, a differential error encoding and a quantization and look-up are performed on the 2×2 coding unit for generating a first coded data. Otherwise, the 2×2 coding unit is a natural pattern, and the method sequentially performs a color domain transform, a discrete cosine transform, and a quantization and look-up on the 2×2 coding unit for generating a second coded data.