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:
Jun. 20, 2006
Filed:
Jun. 28, 2002
Ig Kyun Kim, Taejon, KR;
Kyung Soo Kim, Taejon, KR;
Ig Kyun Kim, Taejon, KR;
Kyung Soo Kim, Taejon, KR;
VK Corporation, Anyang-si, KR;
Electronics and Telecommunications Research Institute, Daejon, KR;
Abstract
The present invention relates to a distributed arithmetic module employing a zero input detection circuit that reduces electric power consumption by avoiding unnecessary calculation. An apparatus for performing a discrete cosine transform (DCT) on a video signal, including; input unit for receiving the video signal in a block by block basis; discrete cosine transform (DCT) unit for receiving each image data block from the input unit and conducting a discrete cosine transform/inverse discrete cosine transform (DCT/IDCT) operation on the received image data block to generate a transformed image data block containing N×M pixel value; zero input detect unit for determining whether pixel values of a current image data block are all '0' and generating a detection signal in order to bypass the DCT/IDCT performing on the current image block; and output unit for outputting the transformed image data block as a transformed video signal.