Patent ID: 11936895
Assignee: APPLE INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A system comprising:
one or more processors; and
one or more non-transitory computer readable media storing instructions that, when executed by the one or more processors, cause the one or more processors to perform operations comprising:
determining whether intra BDPCM (Block-based Delta Pulse Code Modulation) is applied to a current block of a picture;
determining an intra BDPCM mode of the current block when it is determined to apply the intra BDPCM to the current block;
obtaining a residual sample of the current block based on the intra BDPCM mode; and
encoding information representing whether to apply the intra BDPCM based on whether the intra BDPCM has been applied to the current block;
wherein the information includes:
a first flag included in a sequence parameter set, the first flag representing whether the intra BDPCM is available in performing intra-prediction with respect to a picture,
wherein a value of the first flag is selected from among:
 a first value indicating that the intra BDPCM may be used in performing intra-prediction with respect to the picture, and
 a second value indicating that the intra BDPCM may not be used in performing intra-prediction with respect to the picture, and

a second flag that is selectively parsed based on a value of the first flag,
wherein determining whether to parse the second flag comprises:
 determining that the value of the first flag is the first value, and
 responsive to determining that the value of the first flag is the first value, parsing the second flag, and
wherein a value of the second flag is selected from among:
 a third value indicating that the intra BDPCM is applied to the current block, and
 a fourth value indicating that the intra BDPCM is not applied to the current block.