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:
Jan. 20, 2009
Filed:
Sep. 23, 2003
Seung-gi Chang, Seoul, KR;
Zhiming Zhang, Suwon-si, KR;
Seung-gi Chang, Seoul, KR;
Zhiming Zhang, Suwon-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A bit rate control method and apparatus for MPEG-4 video coding are provided. The method includes performing initialization in which a video frame is inputted and a memory is allocated to a rate distortion (RD) buffer where an encoded bitstream to be transmitted to a decoder is stored; intra-coding the inputted video frame; updating the RD buffer; performing post-frame skip in which whether or not the next frame should be encoded is determined to avoid underflow or overflow of the RD buffer; receiving the next video frame, and estimating a quantization parameter (QP) or inter-coding the next video frame depending on whether or not the inputted frame is a first video object plane (VOP); performing a back propagation (BP) model update based on the number of the inputted frames after inter-coding the next frame, or performing the post-frame skip again after performing the self-organizing control; and receiving the next video frame, and estimating QPs of all the frames or performing the self-organizing control in all the frames.