Title:
【発明の名称】データ圧縮
Document Type and Number:
Japanese Patent JP2002506605
Kind Code:
A
Abstract:
Data (D) is compressed in dependence on a compression parameter (CPAR). An example of such data compression is coding a sequence of pictures in accordance with a standard defined by the Moving Pictures Experts Group. In the process of compressing the data (D), the following three steps are repetitively carried out. In a prediction step (PRD), it is predicted, on the basis of an initial value (VALint) of the compression parameter (CPAR), which amount of compressed data Xprd will have been obtained at a future instant of time (Tfut). In an adaptation step (ADP), the initial value (VALint) is adapted on the basis of a difference (DELTAX) between the predicted amount of data (Xprd) and a desired amount of data (Xdes), so as to obtain an adapted value (VALadp) of the compression parameter (CPAR). In an application step (APL), the adapted value (VALadp) of the compression parameter (CPAR) is applied until a subsequent prediction step (PRD) followed by a subsequent adaptation step (ADP) is carried out. Such data compression yields a better quality in terms of loss of information.
Inventors:
Berel nicholas
Application Number:
JP55511499A
Publication Date:
February 26, 2002
Filing Date:
April 22, 1999
Export Citation:
Assignee:
Konin Krekka Philips Electronics NV
International Classes:
G06T9/00; H04N19/124; H04N1/00; H04N7/24; H04N19/137; (IPC1-7): H04N7/32
Attorney, Agent or Firm:
Akihide Sugimura (2 outside)