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. 28, 2006
Filed:
Jul. 13, 2001
Nobuhiro Igi, Kanagawa, JP;
Motoki Kato, Kanagawa, JP;
Nobuhiro Igi, Kanagawa, JP;
Motoki Kato, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
An input video signal is coded by a 1-pass type coding system highly efficiently by taking the proportions of the components of the input image. The coding difficulty level computation circuitdetermines the coding difficulty level d of the input moving image signal Sand sends it to the amount of allocated bits computation circuit/controller. The amount of allocated bits computation circuit/controllerdetermines a reference value of amount of allocated coding bits on the basis of the coding difficulty level d and, when shifting the reference value to the actual amount of allocated coding bits b_x, it stores part of the sum of the amounts of allocated bits a per unit time for a certain period of time as virtual buffer in advance and the actual reference value of the amount of allocated coding bits is obtained by dividing the sum of the amounts of allocated coding bits per unit time less the part stored as virtual buffer by said period of time. As long as the virtual buffer is positive, the provision of an amount of bits exceeding said reference value is permitted.