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:
Feb. 28, 2006
Filed:
Mar. 12, 2002
Sergey N. Zheltov, N. Novgorod, RU;
Stanislav V. Bratanov, N. Novgorod, RU;
Roman A. Belenov, N. Norgorod, RU;
Alexander N. Knyazev, N. Norgorod, RU;
Sergey N. Zheltov, N. Novgorod, RU;
Stanislav V. Bratanov, N. Novgorod, RU;
Roman A. Belenov, N. Norgorod, RU;
Alexander N. Knyazev, N. Norgorod, RU;
Intel Corporation, Santa Clara, CA (US);
Abstract
A fast and precise method to perform inverse and forward Discrete Cosine Transform (DCT) is disclosed. The method may be used for implementing a two-dimensional (2D) inverse or forward DCT that operates on an N×M coefficient block and has a higher accuracy than is specified by the IEEE 1180-1990 standard (for the inverse operation). The disclosed method includes the following stages: based on integer operations, a fixed point one dimensional (1D) DCT may be performed on each row of an input coefficient block, an integer-to-single-precision floating point result conversion may be performed, and a single precision floating point 1D DCT may be performed on each column of the coefficient block resulting from the previous stages.