US 12,262,042 B2
Encoder, decoder and methods thereof for video encoding and decoding
Rickard Sjöberg, Stockholm (SE); and Jonatan Samuelsson, Stockholm (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Jul. 7, 2023, as Appl. No. 18/219,221.
Application 18/219,221 is a continuation of application No. 17/856,511, filed on Jul. 1, 2022, granted, now 11,736,711.
Application 17/856,511 is a continuation of application No. 15/804,774, filed on Nov. 6, 2017, granted, now 11,412,245, issued on Aug. 9, 2022.
Application 15/804,774 is a continuation of application No. 14/394,497, granted, now 9,838,706, issued on Dec. 5, 2017, previously published as PCT/SE2013/050416, filed on Apr. 16, 2013.
Claims priority of provisional application 61/624,469, filed on Apr. 16, 2012.
Prior Publication US 2023/0362400 A1, Nov. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/70 (2014.01); H04N 19/44 (2014.01); H04N 19/46 (2014.01); H04N 19/50 (2014.01); H04N 19/58 (2014.01); H04N 19/89 (2014.01)
CPC H04N 19/50 (2014.11) [H04N 19/44 (2014.11); H04N 19/46 (2014.11); H04N 19/58 (2014.11); H04N 19/70 (2014.11); H04N 19/89 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method performed by an encoder for encoding a current picture of a video stream, according to a scheme in which one or more previously decoded pictures are used as reference pictures for decoding and according to which scheme the encoder indicates to a decoder, in a reference picture set (RPS), which of the one or more previously decoded pictures in a decoded picture buffer (DPB) are reference pictures, wherein the RPS indicates each of the reference pictures by a respective picture order count (POC) value and wherein each indication of a reference picture is a short-term picture indication or a long-term picture indication, said method comprising:
determining, for at least one long-term picture indicator i of the RPS of the current picture, that there are at least two reference pictures in the DPB with a least significant bit (lsb) of the POC, denoted as “POC lsb,” equal to POC lsb indicated for said at least one long-term picture indicator i; and
responsive to said determining, setting a parameter specifying that the at least one long-term picture indicator i be is indicated by the full POC; and
sending the current picture and the RPS with said parameter to the decoder.