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:
Dec. 07, 1993
Filed:
Feb. 14, 1992
Masakazu Nishino, Kashiwara, JP;
Tatsuro Juri, Osaka, JP;
Hiroshi Horikane, Kadoma, JP;
Iwao Hidaka, Higashiosaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
Disclosed is an orthogonal transformation encoder in which after horizontal orthogonal transformation is performed, in parallel to the horizontal and vertical rearrangement of the coefficients for performing vertical orthogonal transformation, detection of interfield coefficient is performed and intra-frame/intrafield modes for the vertical orthogonal transformation are switched. Further, in parallel to the rearrangement of the transformation coefficients for the vertical orthogonal transformation to be in the ascending order from a lower frequency component to a higher frequency component, the amplitude values of the AC components in the block in question are detected to thereby make control on the basis of the amplitude values so that the smaller the amplitude value of the block the smaller the quantizing step width.