	US 12,206,885 B2
	Methods for processing a video signal
Seung Wook Park, Seoul (KR); Jung Sun Kim, Seoul (KR); Yong Hee Choi, Seoul (KR); Byeong Moon Jeon, Seoul (KR); and Joon Young Park, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Feb. 14, 2023, as Appl. No. 18/109,644.
Application 18/109,644 is a continuation of application No. 17/487,466, filed on Sep. 28, 2021, granted, now 11,611,772.
Application 17/487,466 is a continuation of application No. 16/658,628, filed on Oct. 21, 2019, granted, now 11,159,815, issued on Oct. 26, 2021.
Application 16/658,628 is a continuation of application No. 16/259,938, filed on Jan. 28, 2019, granted, now 10,499,077, issued on Dec. 3, 2019.
Application 16/259,938 is a continuation of application No. 16/020,840, filed on Jun. 27, 2018, granted, now 10,230,974, issued on Mar. 12, 2019.
Application 16/020,840 is a continuation of application No. 15/660,760, filed on Jul. 26, 2017, granted, now 10,038,912, issued on Jul. 31, 2018.
Application 15/660,760 is a continuation of application No. 14/807,968, filed on Jul. 24, 2015, granted, now 9,749,652, issued on Aug. 29, 2017.
Application 14/807,968 is a continuation of application No. 14/042,912, filed on Oct. 1, 2013, granted, now 9,167,249, issued on Oct. 20, 2015.
Application 14/042,912 is a continuation of application No. 12/574,313, filed on Oct. 6, 2009, granted, now 8,879,637, issued on Nov. 4, 2014.
Claims priority of provisional application 61/223,073, filed on Jul. 6, 2009.
Claims priority of provisional application 61/177,638, filed on May 12, 2009.
Claims priority of provisional application 61/156,536, filed on Mar. 1, 2009.
Claims priority of provisional application 61/143,821, filed on Jan. 12, 2009.
Claims priority of provisional application 61/143,826, filed on Jan. 12, 2009.
Claims priority of provisional application 61/117,958, filed on Nov. 26, 2008.
Claims priority of provisional application 61/103,219, filed on Oct. 6, 2008.
Claims priority of application No. 10-2009-0094490 (KR), filed on Oct. 6, 2009.
Prior Publication US 2023/0199212 A1, Jun. 22, 2023
Int. Cl. H04N 11/02 (2006.01); H04N 19/107 (2014.01); H04N 19/11 (2014.01); H04N 19/172 (2014.01); H04N 19/176 (2014.01); H04N 19/18 (2014.01); H04N 19/44 (2014.01); H04N 19/51 (2014.01); H04N 19/61 (2014.01); H04N 19/86 (2014.01)

CPC H04N 19/51 (2014.11) [H04N 19/107 (2014.11); H04N 19/11 (2014.11); H04N 19/172 (2014.11); H04N 19/176 (2014.11); H04N 19/18 (2014.11); H04N 19/44 (2014.11); H04N 19/61 (2014.11); H04N 19/86 (2014.11)]

9 Claims

1. A method for decoding a bitstream by a video decoding apparatus, the method comprising:

obtaining, by the video decoding apparatus from the bitstream, first information for a current block, the first information specifying whether the bitstream contains transform coefficient information for the current block;

determining, based on the first information, whether to obtain second information for a sub-block of the current block, the second information of the sub-block specifying whether the bitstream contains transform coefficient information for the sub-block;

obtaining, by the video decoding apparatus from the bitstream, the second information for the sub-block of the current block based on the first information having a first value;

obtaining, by the video decoding apparatus from the bitstream, the transform coefficient information for the sub-block based on the second information of the sub-block having the first value;

obtaining, by the video decoding apparatus, residual data of the sub-block based on the obtained transform coefficient information;

obtaining, by the video decoding apparatus, a predicted value of the sub-block based on an intra-prediction; and

reconstructing, by the video decoding apparatus, the sub block based on the obtained residual data and the predicted value,

wherein, based on the first information having a second value, the obtaining the second information for the sub-block of the current block is skipped, and

wherein, based on the second information of the sub-block having the second value, the obtaining the transform coefficient information for the sub-block is skipped.