	US 12,238,307 B2
	Decoded picture buffer management for video coding
Byeongdoo Choi, Palo Alto, CA (US); Shan Liu, San Jose, CA (US); and Stephan Wenger, Hillsborough, CA (US)
Assigned to TENCENT AMERICA LLC, Palo Alto, CA (US)
Filed by TENCENT AMERICA LLC, Palo Alto, CA (US)
Filed on Sep. 9, 2022, as Appl. No. 17/941,560.
Application 17/941,560 is a continuation of application No. 17/204,098, filed on Mar. 17, 2021, granted, now 11,516,486.
Application 17/204,098 is a continuation of application No. 16/815,710, filed on Mar. 11, 2020, granted, now 10,986,353, issued on Apr. 20, 2021.
Claims priority of provisional application 62/819,460, filed on Mar. 15, 2019.
Prior Publication US 2023/0013580 A1, Jan. 19, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/169 (2014.01); H04N 19/15 (2014.01); H04N 19/174 (2014.01)

CPC H04N 19/188 (2014.11) [H04N 19/15 (2014.11); H04N 19/174 (2014.11)]

19 Claims

1. A method for decoded picture buffer management, the method comprising:

storing previously decoded pictures of a video stream in a picture buffer, including a first plurality of pictures of a same temporal sub-layer, the first plurality of pictures including at least one sub-layer reference picture for predicting a current picture of the video stream;

determining whether a picture of the first plurality of pictures is a non-reference picture based on an indicator presented in at least one from among a slice header and a picture header;

removing, based on the picture being determined as the non-reference picture, the non-reference picture from the picture buffer; and

predicting the current picture using one or more of the at least one sub-layer reference picture that is stored within the picture buffer after removing the non-reference picture from the picture buffer.