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

Claim 0:
1. 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:
parsing a first flag signaled by a sequence parameter set, the first flag representing whether an intra BDPCM (Block-based Delta Pulse Code Modulation) 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;

determining, based on the first flag, whether to parse a second flag representing whether intra BDPCM is applied to a current block of the picture,
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;

determining whether the intra BDPCM is applied to the current block based on the second flag;
responsive to determining that the intra BDPCM is applied to the current block, determining an intra BDPCM mode of the current block; and
obtaining a residual sample of the current block based on the intra BDPCM mode.