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:
Nov. 03, 2020
Filed:
Nov. 13, 2018
Electronics and Telecommunications Research Institute, Daejeon, KR;
Woong Lim, Daejeon, KR;
Seung-Hyun Cho, Daejeon, KR;
Joo-Young Lee, Daejeon, KR;
Youn-Hee Kim, Daejeon, KR;
Jin-Wuk Seok, Daejeon, KR;
Jong-Ho Kim, Daejeon, KR;
Dae-Yeol Lee, Daejeon, KR;
Se-Yoon Jeong, Daejeon, KR;
Hui-Yong Kim, Daejeon, KR;
Jin-Soo Choi, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In quantization and dequantization, multiple quantization methods and multiple dequantization methods may be used. The multiple quantization methods include a variable-rate step quantization method and a fixed-rate step quantization method. The variable-rate step quantization method may be a quantization method in which an increment in a quantization step depending on an increase in a value of a quantization parameter by 1 is not fixed. The fixed-rate step quantization method may be a quantization method in which the increment in the quantization step depending on the increase of the value of the quantization parameter by 1 is fixed.