US 12,445,650 B2
Constraints and unit types to simplify video random access
Gary J. Sullivan, Bellevue, WA (US); and Sandeep Kanumuri, Redmond, WA (US)
Assigned to Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed by Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed on Jul. 31, 2024, as Appl. No. 18/790,400.
Application 15/380,961 is a division of application No. 13/732,328, filed on Dec. 31, 2012, granted, now 9,532,055, issued on Dec. 27, 2016.
Application 18/790,400 is a continuation of application No. 18/443,492, filed on Feb. 16, 2024.
Application 18/443,492 is a continuation of application No. 17/689,235, filed on Mar. 8, 2022, granted, now 11,943,480, issued on Mar. 26, 2024.
Application 17/689,235 is a continuation of application No. 16/588,992, filed on Sep. 30, 2019, granted, now 11,303,933, issued on Apr. 12, 2022.
Application 16/588,992 is a continuation of application No. 15/380,961, filed on Dec. 15, 2016, granted, now 10,432,973, issued on Oct. 1, 2019.
Claims priority of provisional application 61/667,357, filed on Jul. 2, 2012.
Claims priority of provisional application 61/639,663, filed on Apr. 27, 2012.
Claims priority of provisional application 61/624,984, filed on Apr. 16, 2012.
Prior Publication US 2024/0397095 A1, Nov. 28, 2024
Int. Cl. H04N 19/65 (2014.01); H04N 19/15 (2014.01); H04N 19/573 (2014.01); H04N 19/70 (2014.01); H04N 19/88 (2014.01); H04N 19/172 (2014.01); H04N 19/184 (2014.01)
CPC H04N 19/65 (2014.11) [H04N 19/15 (2014.11); H04N 19/573 (2014.11); H04N 19/70 (2014.11); H04N 19/88 (2014.11); H04N 19/172 (2014.11); H04N 19/184 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A video decoder system comprising:
a buffer, implemented in memory, configured to receive encoded data in a bitstream for multiple pictures in a video sequence; and
a video decoder, implemented with one or more processing units and memory, configured to perform operations to decode the multiple pictures, wherein each of the multiple pictures is designated as being one of multiple picture types, the multiple picture types including (a) a first picture type indicating a broken link access (“BLA”) picture that is capable of being used as a random access point (“RAP”) picture and does not have any associated non-decodable leading pictures, but may have one or more associated decodable leading pictures, (b) a second picture type indicating a BLA picture that is capable of being used as a RAP picture but does not have any associated leading pictures, and (c) a third picture type indicating a random access decodable leading (“RADL”) picture, and wherein the operations include:
decoding a first picture among the multiple pictures, the first picture being designated as the first picture type; and
decoding a second picture among the multiple pictures, the second picture being designated as the third picture type.