(12) International Application Status Report

Received at International Bureau: 16 December 2019 (16.12.2019)

Information valid as of: 25 May 2020 (25.05.2020)

Report generated on: 01 October 2020 (01.10.2020)

(10) Publication number: (43) Publication date: (26) Publication language:
WO 2020/11451511 June 2020 (11.06.2020) English (EN)

(21) Application number: (22) Filing date: (25) Filing language:
PCT/CN2019/12404109 December 2019 (09.12.2019) English (EN)

(31) Priority number(s): (32) Priority date(s): (33) Priority status:
PCT/CN2018/119946 (CN)08 December 2018 (08.12.2018) Priority document received (in compliance with PCT Rule 17.1)
PCT/CN2018/121118 (CN)14 December 2018 (14.12.2018) Priority document received (in compliance with PCT Rule 17.1)
PCT/CN2019/075094 (CN)14 February 2019 (14.02.2019) Priority document received (in compliance with PCT Rule 17.1)
PCT/CN2019/075846 (CN)22 February 2019 (22.02.2019) Priority document received (in compliance with PCT Rule 17.1)

(51) International Patent Classification:
H04N 19/176 (2014.01)

(71) Applicant(s):
BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD. [CN/CN]; Room B-0035, 2/F, No. 3 Building No. 30, Shixing Road, Shijingshan District Beijing 100041 (CN) (for all designated states)
BYTEDANCE INC. [US/US]; 12655 West Jefferson Boulevard Sixth Floor, Suite No. 137 Los Angeles, California 90066 (US) (for all designated states)

(72) Inventor(s):
ZHANG, Kai; 12655 West Jefferson Boulevard Sixth Floor, Suite No. 137 Los Angeles, California 90066 (US)
ZHANG, Li; 12655 West Jefferson Boulevard Sixth Floor, Suite No. 137 Los Angeles, California 90066 (US)
LIU, Hongbin; Jinritoutiao Post Office China Satellite Communications Tower No. 63, Zhichun Road, Haidian District Beijing 100080 (CN)
XU, Jizheng; 12655 West Jefferson Boulevard Sixth Floor, Suite No. 137 Los Angeles, California 90066 (US)
WANG, Yue; Jinritoutiao Post Office China Satellite Communications Tower No. 63, Zhichun Road, Haidian District Beijing 100080 (CN)

(74) Agent(s):
LIU, SHEN & ASSOCIATES; 10th Floor, Building 1 10 Caihefang Road, Haidian District Beijing 100080 (CN)

(54) Title (EN): REDUCING THE IN-CTU STORAGE REQUIRED BY AFFINE INHERITANCE
(54) Title (FR): RÉDUCTION DU STOCKAGE EN UNITÉ CTU REQUISE PAR HÉRITAGE AFFINE

(57) Abstract:
(EN): Reducing the in-CTU storage required by affine inheritance is described. One example method includes associating a first group of control point motion vectors (CPMVs) for determining inherited motion information of blocks coded after a first block, with a second group of CPMVs for deriving MVs of sub-blocks of the first block or a third group of CPMVs that is signaled for the first block, wherein the first group of CPMVs is not identical with the second group of CPMVs or the third group of CPMVs; determining inherited motion information for a second block, which is coded after the first block, based on the first group of CPMVs, and performing a conversation between the second block and a bitstream representation of the second block by using the inherited motion information.
(FR): L'invention concerne la réduction du stockage en unité CTU requise par héritage affine. Un procédé représentatif comprend l'association d'un premier groupe de vecteurs de mouvement de points de commande (CPMV) pour déterminer une information de mouvement hérité de blocs codés après un premier bloc, à un deuxième groupe de de vecteurs CPMV pour dériver des vecteurs de mouvement de sous-blocs du premier bloc ou un troisième groupe de vecteurs CPMV qui est signalé pour le premier bloc, le premier groupe de vecteurs CPMV n'étant pas identique au second groupe de vecteurs CPMV ou au troisième groupe de vecteurs CPMV; la détermination d'information de mouvement hérité pour un second bloc, qui est codé après le premier bloc, sur la base du premier groupe de vecteurs CPMV, et la réalisation d'une conversation entre le second bloc et une représentation de flux binaire du second bloc au moyen de l'information de mouvement hérité.

International search report:
Received at International Bureau: 13 March 2020 (13.03.2020) [CN]

International Report on Patentability (IPRP) Chapter II of the PCT:
Not available

(81) Designated States:
AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
European Patent Office (EPO) : AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR
African Intellectual Property Organization (OAPI) : BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG
African Regional Intellectual Property Organization (ARIPO) : BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW
Eurasian Patent Organization (EAPO) : AM, AZ, BY, KG, KZ, RU, TJ, TM

Declarations:
Declaration of inventorship (Rules 4.17(iv) and 51bis.1(a)(iv)) for the purposes of the designation of the United States of America