US 12,137,237 B2
Zero residual flag coding
Liang Zhao, Sunnyvale, CA (US); and Shan Liu, San Jose, CA (US)
Assigned to TENCENT AMERICA LLC, Palo Alto, CA (US)
Filed by TENCENT AMERICA LLC, Palo Alto, CA (US)
Filed on Jan. 11, 2022, as Appl. No. 17/573,299.
Claims priority of provisional application 63/209,261, filed on Jun. 10, 2021.
Prior Publication US 2022/0400275 A1, Dec. 15, 2022
Int. Cl. H04N 19/44 (2014.01); H04N 19/105 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/46 (2014.01)
CPC H04N 19/44 (2014.11) [H04N 19/105 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/46 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method of video decoding, the method comprising:
receiving a video bitstream comprising a plurality of blocks including a current block;
determining a value of a first reference zero-skip flag of a first neighboring block of the current block;
deriving at least one context for decoding a zero-skip flag of the current block based on the value of the first reference zero-skip flag;
decoding the zero-skip flag of the current block according to the at least one context;
deriving at least one second context for decoding a prediction mode (is-inter) flag of the current block based on the value of the zero-skip flag;
decoding the is-inter flag of the current block according to the at least one second context; and
decoding the current block according to the zero-skip flag and the is-inter flag.