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:
Feb. 07, 2012
Filed:
May. 28, 2008
Zhong Luo, Shenzhen, CN;
Zhong Luo, Shenzhen, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
A video bit-stream gamma characteristic correction method and a multipoint control unit in video communication field resolve the gamma distortion problem of video image in the existing multimedia communication. In the method, the receiving end carries out correction once through carrying the gamma characteristic parameter of the transmission end in the video bit-stream; or the multipoint control unit and the receiving end correct gamma distortion of the video image in multiple steps. A multipoint processor () of the multipoint control unit includes a gamma characteristic parameter storing module (), which stores gamma characteristic parameter of the video image transmission end; and a gamma characteristic correction module (), which is connected to the gamma characteristic parameter storing module and corrects the gamma characteristic of the video image according to the gamma characteristic parameter of the video image transmission end.