	US 11,792,400 B2
	Image decoding method, image coding method, image decoding apparatus, image coding apparatus, and image coding and decoding apparatus
Hisao Sasai, Osaka (JP); Takahiro Nishi, Nara (JP); Youji Shibahara, Osaka (JP); Toshiyasu Sugio, Osaka (JP); Kyoko Tanikawa, Osaka (JP); and Toru Matsunobu, Osaka (JP)
Assigned to SUN PATENT TRUST, New York, NY (US)
Filed by Sun Patent Trust, New York, NY (US)
Filed on May 3, 2022, as Appl. No. 17/735,587.
Application 14/837,546 is a division of application No. 14/304,274, filed on Jun. 13, 2014, granted, now 9,154,780, issued on Oct. 6, 2015.
Application 17/735,587 is a continuation of application No. 16/781,661, filed on Feb. 4, 2020, granted, now 11,356,666.
Application 16/781,661 is a continuation of application No. 16/452,842, filed on Jun. 26, 2019, granted, now 10,595,022, issued on Mar. 17, 2020.
Application 16/452,842 is a continuation of application No. 16/179,133, filed on Nov. 2, 2018, granted, now 10,382,760, issued on Aug. 13, 2019.
Application 16/179,133 is a continuation of application No. 15/699,115, filed on Sep. 8, 2017, granted, now 10,165,277, issued on Dec. 25, 2018.
Application 15/699,115 is a continuation of application No. 15/330,776, filed on Nov. 7, 2016, granted, now 9,794,571, issued on Oct. 17, 2017.
Application 15/330,776 is a continuation of application No. 14/837,546, filed on Aug. 27, 2015, granted, now 9,525,881, issued on Dec. 20, 2016.
Application 14/304,274 is a continuation of application No. 13/535,527, filed on Jun. 28, 2012, granted, now 8,792,739, issued on Jul. 29, 2014.
Claims priority of provisional application 61/502,992, filed on Jun. 30, 2011.
Prior Publication US 2022/0264097 A1, Aug. 18, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G06K 9/36 (2006.01); H04N 19/13 (2014.01); H04N 19/70 (2014.01); H04N 19/91 (2014.01); H04N 19/136 (2014.01); H04N 19/103 (2014.01); H04N 19/105 (2014.01); H04N 19/139 (2014.01); H04N 19/176 (2014.01); H04N 19/196 (2014.01); H04N 19/583 (2014.01)

CPC H04N 19/13 (2014.11) [H04N 19/103 (2014.11); H04N 19/105 (2014.11); H04N 19/136 (2014.11); H04N 19/139 (2014.11); H04N 19/176 (2014.11); H04N 19/196 (2014.11); H04N 19/583 (2014.11); H04N 19/70 (2014.11); H04N 19/91 (2014.11)]

3 Claims

1. A coding apparatus comprising:

processing circuitry; and

storage coupled to the processing circuitry,

wherein the processing circuitry performs the following using the storage:

determining a context for a current block in an image, from among a plurality of contexts; and

performing arithmetic coding on a control parameter for the current block to generate a bitstream corresponding to the current block,

wherein the determining of the context further includes:

determining a signal type under which the control parameter for the current block is classified;

determining the context by using both of coded control parameters for a left block and an upper block, when the signal type is a first type, the left block being a neighboring block to the left of the current block, and the upper block being a neighboring block on top of the current block; and

determining the context by using a predetermined fixed value, without using any of the coded control parameters for the left block and the upper block, when the signal type is a second type different from the first type or both coded control parameters of the left block and the upper block are not available,

wherein one of a split flag and a skip flag is classified under the first type, the split flag indicating whether or not the current block is partitioned into a plurality of blocks, and the skip flag indicating whether or not the current block is to be skipped, and

wherein a difference parameter and a residual flag are classified under the second type, the difference parameter indicating a difference between a motion vector and a motion vector predictor of the current block, the residual flag indicating whether or not residual data is included in the current block, and the residual data including at least one of luma coefficient data or chroma coefficient data.