US 11,818,391 B2
Video encoding method and video decoding method
Viktor Wahadaniah, Singapore (SG); Chong Soon Lim, Singapore (SG); Sue Mon Thet Naing, San Jose, CA (US); Takahiro Nishi, Nara (JP); Youji Shibahara, Osaka (JP); Hisao Sasai, Osaka (JP); and Toshiyasu Sugio, Osaka (JP)
Assigned to SUN PATENT TRUST, New York, NY (US)
Filed by Sun Patent Trust, New York, NY (US)
Filed on Mar. 4, 2022, as Appl. No. 17/686,688.
Application 17/686,688 is a continuation of application No. 17/139,039, filed on Dec. 31, 2020, granted, now 11,303,926.
Application 17/139,039 is a continuation of application No. 16/507,457, filed on Jul. 10, 2019, granted, now 10,917,659, issued on Feb. 9, 2021.
Application 16/507,457 is a continuation of application No. 15/836,187, filed on Dec. 8, 2017, granted, now 10,397,605, issued on Aug. 27, 2019.
Application 15/836,187 is a continuation of application No. 15/399,966, filed on Jan. 6, 2017, granted, now 9,961,362, issued on May 1, 2018.
Application 15/399,966 is a continuation of application No. 13/957,478, filed on Aug. 2, 2013, granted, now 9,602,818, issued on Mar. 21, 2017.
Application 13/957,478 is a continuation of application No. PCT/JP2012/001013, filed on Feb. 16, 2012.
Claims priority of provisional application 61/443,373, filed on Feb. 16, 2011.
Prior Publication US 2022/0264145 A1, Aug. 18, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/573 (2014.01); H04N 19/70 (2014.01); H04N 19/65 (2014.01); H04N 19/31 (2014.01); H04N 19/593 (2014.01); H04N 19/159 (2014.01); H04N 19/61 (2014.01); H04N 19/172 (2014.01); H04N 19/184 (2014.01)
CPC H04N 19/573 (2014.11) [H04N 19/159 (2014.11); H04N 19/31 (2014.11); H04N 19/593 (2014.11); H04N 19/65 (2014.11); H04N 19/70 (2014.11); H04N 19/172 (2014.11); H04N 19/184 (2014.11); H04N 19/61 (2014.11)] 2 Claims
OG exemplary drawing
 
1. A decoding method comprising:
judging whether or not a picture is a key picture having a temporal level that is lower than a temporal level of a current picture;
constructing a reference picture list including a valid reference picture for the current picture; and
decoding the current picture using the valid reference picture included in the reference picture list,
wherein when the current picture is a first picture of a switched temporal level higher than a temporal level of the key picture, all of reference pictures included in a reference picture memory are key pictures.