US 12,335,509 B2
Tracking a reference picture on an electronic device
Kiran Misra, Vancouver, WA (US); Sachin G. Deshpande, Camas, WA (US); and Christopher A. Segall, Camas, WA (US)
Assigned to DOLBY INTERNATIONAL AB, Dublin (IE)
Filed by DOLBY INTERNATIONAL AB, Amsterdam Zuidoost (NL)
Filed on Mar. 1, 2024, as Appl. No. 18/593,515.
Application 18/593,515 is a continuation of application No. 17/408,936, filed on Aug. 23, 2021, granted, now 11,943,466.
Application 17/408,936 is a continuation of application No. 16/436,215, filed on Jun. 10, 2019, granted, now 11,102,500, issued on Aug. 24, 2021.
Application 16/436,215 is a continuation of application No. 15/040,718, filed on Feb. 10, 2016, granted, now 10,321,146, issued on Jun. 11, 2019.
Application 15/040,718 is a continuation of application No. 14/284,233, filed on May 21, 2014, granted, now 9,992,507, issued on Jun. 5, 2018.
Application 14/284,233 is a continuation of application No. 13/273,191, filed on Oct. 13, 2011, granted, now 8,768,079, issued on Jul. 1, 2014.
Prior Publication US 2024/0292016 A1, Aug. 29, 2024
Int. Cl. H04N 19/00 (2014.01); H04N 19/423 (2014.01); H04N 19/44 (2014.01); H04N 19/503 (2014.01); H04N 19/573 (2014.01); H04N 19/58 (2014.01); H04N 19/587 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/503 (2014.11) [H04N 19/423 (2014.11); H04N 19/44 (2014.11); H04N 19/573 (2014.11); H04N 19/58 (2014.11); H04N 19/587 (2014.11); H04N 19/70 (2014.11)] 7 Claims
OG exemplary drawing
 
1. A method for decoding a video bitstream comprising:
receiving a bitstream comprising quantized transform coefficients;
receiving a reference description for decoded reference pictures from said bitstream;
determining a picture order count (POC) of a current picture for decoding, wherein each of the decoded reference pictures is associated with a picture order count (POC), and the picture order counts (POCs) of the decoded reference pictures are ordered in a plurality of sets each having a range [0 . . . MaxPOC−1] of POC values, wherein a particular value of MaxPOCSetIndex corresponds to a particular set of [0 . . . MaxPOC−1] of POC values,
wherein said reference description includes a modification parameter for a long term reference picture,
wherein the modification parameter for the long term reference picture is a difference between a value of MaxPOCSetIndex of a decoded reference picture of the current picture and a value of MaxPOCSetIndex of the current picture;
identifying said decoded reference picture of said current picture from a decoded picture buffer based on said picture order count (POC) of the current picture and said modification parameter;
decoding said current picture using inter-frame prediction based on said decoded reference picture; and
buffering said decoded picture in said decoded picture buffer for future prediction.