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:
May. 11, 2004
Filed:
Feb. 27, 2001
Rajesh Kumar Dixit, Tokyo, JP;
Takao Terao, Kanagawa, JP;
Hiroshi Sugawara, Kanagawa, JP;
Masami Goseki, Tokyo, JP;
Kazushi Sato, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
An inverse discrete-cosine transform apparatus that is simple in structure and can yet output pixel data items different in resolution. The apparatus comprises eight inverse discrete-cosine transform multipliers , ten field, compression, inverse discrete-cosine transform multipliers , eight selectors , eight selectors , eight buffers , eight sign multipliers , a control section, eight adders , and eight buffers . The control section controls the selectors , selectors , buffers and sign multipliers in accordance with whether the input discrete-cosine block has been subjected to field division and where the discrete-cosine coefficients are located in the block. One of the values input to the selectors , selectors , buffers and sign multipliers is thereby selected. The value selected is output after added with the plus sign or the minus sign. The adders add the values output from the selectors , selectors , buffers and sign multipliers . The buffers store the values output from the adders