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:
Dec. 11, 2012
Filed:
Aug. 10, 2006
Junya Araki, Tokyo, JP;
Junya Araki, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
Searching an optimal quantization step size at high speed when controlling the coding rate of an image sequence. A skip binary search section determines quantization step size Δby binary search, using a frame out of every m [0] frames of an image sequence. A quantization step size correcting section determines quantization step size Δthat can achieve the target bit rate R by linear approximation from Δ, generated bit rate at that time, quantization step size Δof the immediately preceding loop and the generated bit rate at that time. A first coding section encodes the every m [1]-th frame of the image sequence with quantization step size Δand a quantization step size forecasting section determines quantization step size Δthat can achieve the target bit rate R by linear approximation. A second coding section encodes all the frames with the quantization step size Δ.