Title:
信号符号化方法、信号復号方法、信号符号化装置、信号復号装置、信号符号化プログラム、及び信号復号プログラム
Document Type and Number:
Japanese Patent JP3842803
Kind Code:
B2
Abstract:
A signal encoding method divides an encoding object signal to be encoded into interval units and performs arithmetic encoding on the division interval unit basis according to probability-associated information. The method includes (1) a setting information calculation step for analyzing the encoding object signal on division interval unit basis and calculates information on the initial value of the probability-associated information used for arithmetic encoding of the encoding object signal in the division interval unit as setting information, (2) an encoding step for arithmetically encoding the encoding object signal in the division interval unit according to the setting information calculated in the setting information calculation step, and (3) setting information addition step for adding a header including setting information to the signal which has been arithmetically encoded for each division interval unit.
Inventors:
Mitsuru Kobayashi
Minoru Eito
Satoshi Adachi
Bun Chun Sen
Minoru Eito
Satoshi Adachi
Bun Chun Sen
Application Number:
JP2004501981A
Publication Date:
November 08, 2006
Filing Date:
April 25, 2003
Export Citation:
Assignee:
NTT DoCoMo, Inc.
International Classes:
H03M7/40; H04N19/13; H03M7/00; H04N19/00; H04N19/136; H04N19/46; H04N19/503; H04N19/51; H04N19/513; H04N19/61; H04N19/625; H04N19/70; H04N19/91
Domestic Patent References:
| JP2005347780A | ||||
| JP5130428A | ||||
| JP5122534A | ||||
| JP10215228A | ||||
| JP5030372A | ||||
| JP2003235044A | ||||
| JP2000209442A |
Foreign References:
| WO2003043345A1 |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Shiro Terasaki
Tomoya Kurokawa
Junji Kashiwaoka
Shiro Terasaki
Tomoya Kurokawa
Junji Kashiwaoka
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