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:
Aug. 29, 2017
Filed:
Dec. 12, 2016
Hfi Innovation Inc., Zhubei, Hsinchu County, TW;
Xun Guo, Beijing, CN;
Shaw-Min Lei, Zhubei, TW;
HFI INNOVATION INC., Zhubei, Hsinchu County, TW;
Abstract
A method and apparatus for clipping a transform coefficient are disclosed. In one implementation, a method is implemented in a video encoder for clipping a quantization level. The method operates by generating the quantization level for a transform coefficient of a transform unit by quantizing the transform coefficient according to a quantization matrix and quantization parameter, determining a clipping range in the video encoder for one or a combination of a fixed-range clipping condition and a dynamic-range clipping condition, and clipping the quantization level according to the clipping range to generate a clipping-processed quantization level. The quantization level is clipped within a fixed clipping range from −m to m−1 for the fixed-range clipping condition and m corresponds to 128, 32768, or 2147483648.