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:
May. 25, 2004
Filed:
Jul. 10, 2000
Wei-Lien Hus, Austin, TX (US);
Frank J. Gorishek, Austin, TX (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
A system and method for carrying out a two-dimensional forward and/or inverse discrete cosine transform is disclosed herein. In one embodiment, the method comprises: (1) receiving multiple data blocks; (2) grouping together one respective element from each of the multiple data blocks to provide full data vectors for single-instruction-multiple-data (SIMD) floating point instructions; and (3) operating on the full data vectors with SIMD instructions to carry out the two dimensional transform on the multiple data blocks. Preferably the two dimensional transform is carried out by performing a linear transform on each row of the grouped elements, and then performing a linear transform on each column of the grouped elements. The method may further include isolating and arranging the two dimensional transform coefficients to form transform coefficient blocks that correspond to the originally received multiple data blocks. The multiple data blocks may consist of exactly two data blocks. The method may be implemented in the form of software and conveyed on a digital information storage medium or information transmission medium. The dual forward or inverse discrete cosine transform methodology may be employed within a general purpose computer or within a computation unit of a multimedia encoder or decoder system, implemented either in hardware or software. A multimedia encoder or decoder employing the fast, forward or inverse discrete cosine transform methodology in accordance with the present invention may advantageously achieve high performance.