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:
Apr. 25, 2006
Filed:
Aug. 07, 2001
Ouyang He, Cupertino, CA (US);
LI Sha, San Jose, CA (US);
Shuhua Xiang, Fremont, CA (US);
Ping Zhu, San Jose, CA (US);
Yaojun Luo, San Jose, CA (US);
Ouyang He, Cupertino, CA (US);
Li Sha, San Jose, CA (US);
Shuhua Xiang, Fremont, CA (US);
Ping Zhu, San Jose, CA (US);
Yaojun Luo, San Jose, CA (US);
WIS Technologies, Inc., Santa Clara, CA (US);
Abstract
A method, apparatus, computer medium, and other embodiments for discrete cosine transform and inverse discrete cosine transform (DCT/IDCT) of image signals are described. A DCT/IDCT module includes a plurality of different cores. One embodiment of a core includes two sets of lookup tables to provide multiplication and add operations for the DCT and IDCT functions. Another embodiment of a core include one set of lookup tables, while another embodiment of a core includes no lookup table. The DCT/IDCT module provides forward DCT and IDCT functionality without the use of additional multipliers.