US 12,075,080 B2
Decoders and methods thereof for managing pictures in video decoding process
Jonatan Samuelsson, Enskede (SE); Rickard Sjöberg, Stockholm (SE); and Per Wennersten, Årsta (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Dec. 9, 2020, as Appl. No. 17/116,152.
Application 17/116,152 is a continuation of application No. 16/859,327, filed on Apr. 27, 2020, granted, now 10,893,288.
Application 16/859,327 is a continuation of application No. 13/637,242, granted, now 10,674,171, issued on Jun. 2, 2020, previously published as PCT/SE2012/050992, filed on Sep. 20, 2012.
Claims priority of provisional application 61/539,539, filed on Sep. 27, 2011.
Prior Publication US 2021/0092429 A1, Mar. 25, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/46 (2014.01); H04N 19/31 (2014.01); H04N 19/44 (2014.01); H04N 19/50 (2014.01)
CPC H04N 19/50 (2014.11) [H04N 19/31 (2014.11); H04N 19/44 (2014.11); H04N 19/46 (2014.11)] 12 Claims
OG exemplary drawing
 
1. A method of processing a video stream, the method comprising:
obtaining a header value from a slice header of the video stream;
deriving a further value from a plurality of most significant bits of a Picture Order Count (POC) value of a key picture and a plurality of least significant bits of the POC value of the key picture, the key picture being a picture most recently occurring in the video stream that prevents use of pictures previous to the key picture from being used to predict pictures after the key picture;
summing the further value with the header value to determine a POC value of a current picture; and
decoding the current picture based on the POC value of the current picture.