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. 03, 2001
Filed:
Mar. 25, 1998
Hideshi Nishida, Osaka, JP;
Kozo Kimura, Osaka, JP;
Makoto Hirai, Suita, JP;
Tokuzo Kiyohara, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
Bitstream analyzing unit,fetches a coded block pattern and a coded quantized DCT coefficient from each block in a bitstream. Entropy decoding unit,decodes the coded block pattern into a block pattern and decodes the coded quantized DCT coefficient into pairs of a run length and an effectiveness factor. Dequantization unit,generates orthogonal transformation coefficients from the pairs of a run length and an effectiveness factor. Inverse Discrete Cosine Transform (IDCT) unit,generates a difference image from the orthogonal transformation coefficients. Decode controlling unit,instructs first selecting unit,to select constants “0”output from first constant generating unit,when the image is a “skipped” block. Image storage unit,stores a plurality of reference frame pictures having been decoded. Image restoring unit,restores an original block by adding a decoded difference image to a reference block read from the reference frame pictures stored in the image storage unit