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:
Aug. 07, 2012
Filed:
Dec. 12, 2008
Toshihiko Suzuki, Hamamatsu, JP;
Toshihiko Suzuki, Hamamatsu, JP;
Yamaha Corporation, , JP;
Abstract
In a data decompressor, a variable length decoding unit extracts a variable length code from compressed image data, performs variable length decoding of the extracted variable length code, and restores quantized data before the variable length encoding was applied. An inverse quantization unit performs inverse quantization on the restored quantized data to generate orthogonal transform coefficients of each block and writes the generated orthogonal transform coefficients to a memory. An inverse orthogonal transform unit reads the orthogonal transform coefficients of each block from the memory and performs an inverse transform of the orthogonal transform performed by a data compressor on the orthogonal transform coefficients to thereby restore an image of each block. The inverse orthogonal transform unit is constructed so as to perform the inverse transform of the orthogonal transform coefficients in parallel with the variable length decoding of the variable length decoding unit and the inverse quantization of the inverse quantization unit.