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. 25, 2000
Filed:
Jul. 09, 1998
Winbond Electronics Corp., Hsinchu, TW;
Abstract
A method of signal compression. An input signal is divided into a plurality of segments. Each of the segments is decomposed by wavelet packet transform to a plurality of levels, so that each of the segments is in a form of a group of coefficients in each of a plurality of domains corresponding to each of the levels. Each of the domains is divided into a plurality of sub-domains to calculate a degree of characteristic concentration corresponding thereto. One of the domains having a highest degree of characteristic concentration is select to perform bit allocation and quantization, so that the group of coefficients in the selected domain is represented as an information. The information is formatted into a frame for transmission, and then the frame is output.