Granted Patent B2

US 12,225,237 · App. 18/234,306 · Granted Feb 11, 2025

Inventors: Yue Yu (San Diego, CA); Limin Wang (San Diego, CA)

Assignee: ARRIS Enterprises LLC

H04N19/70H04N19/513H04N19/597H04N19/122H04N19/124H04N19/30

Abstract

Claims (18)

1. A method of decoding a plurality of pictures, each picture processed at least in part according to a picture parameter set, the method comprising:

receiving a bitstream comprising the plurality of pictures and a picture parameter set and at least one transform unit and at least one prediction unit;

parsing the picture parameter set to determine for a picture in the plurality of pictures whether a pps_extension_present_flag signaling flag specifies presence of syntax structure pps_extension_Xbits at a picture level for the picture,

wherein the pps_extension_present_flag and pps_extension_Xbits signaling flags, when present, are adaptable per picture in the plurality of pictures, and

wherein the pps_extension_Xbits signaling flag is represented in the picture parameter set by multiple bits, where X=the number of said bits;

parsing the pps_extension_Xbits syntax structure to determine if any pps_extension_data_flag syntax structures are present in the picture parameter set;

wherein pps_extension_Xbits shall be equal to 0 for bitstreams conforming to High Efficiency Video Coding (HEVC) profiles, and

wherein pps_extension_Xbits not equal to 0 causes the pps_extension_data_flag syntax structures in a picture parameter set NAL unit to be ignored during decoding.

2. An apparatus for decoding a plurality of pictures, each picture processed at least in part according to a picture parameter set, the apparatus, comprising:

a processor;

a memory, communicatively coupled to the processor, the memory storing a plurality of instructions comprising instructions for:

receiving a bitstream comprising the plurality of pictures and a picture parameter set and at least one transform unit and at least one prediction unit;

parsing the picture parameter set to determine for a picture in the plurality of pictures whether a pps_extension_present_flag signaling flag specifies presence of syntax structure pps_extension_Xbits at a picture level for the picture,

wherein the pps_extension_present_flag and pps_extension_Xbits signaling flags, when present, are adaptable per picture in the plurality of pictures, and

wherein the pps_extension_Xbits signaling flag is represented in the picture parameter set by multiple bits, where X=the number of said bits;

parsing the pps_extension_Xbits syntax structure to determine if any pps_extension_data_flag syntax structures are present in the picture parameter set;

wherein pps_extension_Xbits shall be equal to 0 for bitstreams conforming to High Efficiency Video Coding (HEVC) profiles, and

wherein pps_extension_Xbits not equal to 0 causes pps_extension_data_flag syntax structures in the picture parameter set NAL unit to be ignored during decoding.

Assignments (2)

Continuity (6)

References Cited (78)