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:
Jan. 07, 2025
Filed:
Jun. 23, 2023
Panasonic Intellectual Property Corporation of America, Torrance, CA (US);
Masato Ohkawa, Toyama, JP;
Hideo Saitou, Ishikawa, JP;
Tadamasa Toma, Osaka, JP;
Takahiro Nishi, Nara, JP;
Kiyofumi Abe, Osaka, JP;
Ryuichi Kanoh, Osaka, JP;
PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA, Torrance, CA (US);
Abstract
When intra prediction is to be used, an encoder determines whether an adaptive basis selection mode is to be used and whether a size of the current block matches a determined size. When the adaptive basis selection mode is to be used and the size matches the determined size, the encoder fixes the first transform basis for the current block to a first determined transform basis in the adaptive basis selection mode, and generates first transform coefficients by performing first transform of residual signals of the current block using the first determined transform basis; quantizes the first transform coefficients when an intra prediction mode for the current block is a determined mode; and generates second transform coefficients by performing second transform of the first transform coefficients using a second transform basis, and quantizes the second transform coefficients, when the intra prediction mode is not the determined mode.