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. 23, 2025
Filed:
Apr. 14, 2020
Lg Electronics Inc., Seoul, KR;
Sunmi Yoo, Seoul, KR;
Jin Heo, Seoul, KR;
Jangwon Choi, Seoul, KR;
Jung Ah Choi, Seoul, KR;
Seung Hwan Kim, Seoul, KR;
LG ELECTRONICS INC., Seoul, KR;
Abstract
An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus may include obtaining a residual block of a current block encoded in an intra prediction mode from a bitstream, deriving a modified residual block by performing differential encoding with respect to the residual block, based on differential encoding mode information obtained from the bitstream indicating a differential encoding mode of a residual coefficient, and deriving a residual block of the current block by performing dequantization with respect to the modified residual block.