Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
Method and system for improved digital video data processing using 4-point discrete cosine transforms
 Methods and systems for data compression and decompression are disclosed. Specifically, the method for data compression of the present invention receives four inputs representing pixel information of an image and performs a combination of a 4-point discrete cosine transform (DCT) and a weighting function to obtain four outputs representing digital representations of an image. The method for data decompression receives four inputs representing digital representations of an image and performs a combination of an inverse weighting function and a 4-point inverse discrete cosine transform (IDCT) to obtain pixel components of an image. The methods and systems of the present invention may be used in optimizing digital video encoders and decoders. 
Sony Electronics, Inc. Sony Corporation
G G
G06T G06F
inventional inventional
C. C. Ching-Fang Naofumi
Lee Chang Yanagihara