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. 25, 2015
Filed:
Mar. 06, 2012
Tsung Yau Huang, Taipei, TW;
Homer H. Chen, Taipei, TW;
Po-yen Su, Taipei, TW;
Chieh Kai Kao, Taipei, TW;
Tao-sheng Ou, Taipei, TW;
Tsung Yau Huang, Taipei, TW;
Homer H. Chen, Taipei, TW;
Po-Yen Su, Taipei, TW;
Chieh Kai Kao, Taipei, TW;
Tao-Sheng Ou, Taipei, TW;
National Taiwan University, Taipei, TW;
Abstract
The present invention is directed to a rate-distortion optimized (RDO) transform and quantization system. A frame classification unit classifies an input frame as either a key frame or a non-key frame. A rate model update unit generates at least one model parameter of a rate model according to a transform coefficient and a bitrate resulted from an encoded key frame. An RDO transform and quantization unit processes the input frame, thereby generating a quantized transform coefficient according to the model parameter. A frame buffer is used to store a previous frame, according to which the bitrate is estimated.