The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 2023
Filed:
Nov. 28, 2022
Tencent America Llc, Palo Alto, CA (US);
Cheung Auyeung, Sunnyvale, CA (US);
Xin Zhao, Santa Clara, CA (US);
Xiang Li, Saratoga, CA (US);
Shan Liu, San Jose, CA (US);
TENCENT AMERICA LLC, Palo Alto, CA (US);
Abstract
A method of video decoding in a decoder is provided. In the method, a coded video bitstream is received. For a scan position in the transform block, an offset value is determined based on a template magnitude for a template of the scan position. The offset value is constrained based on a first number of context models for each frequency region. For the scan position, a base value is determined based on the first number and the scan position. A context model index is determined based on a sum of the offset value and the base value. A context model is selected from a plurality of context models based on the context model index. A value of a syntax element at the scan position is determined based on the context model. A transform coefficient at the scan position is determined based on the value of the syntax element.