Title:
VARIABLE LENGTH DECODER AND METHOD THEREFOR
Document Type and Number:
Japanese Patent JP3030028
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To efficiency enhance a coding by reducing a useless bit pattern so as to attain less calculation amount and less storage amount and to decode a variable length code in a forward direction and also in a reverse direction, even when a synchronization period is set to each prescribed period by using a stuffing code.
SOLUTION: Coded data consisting of a variable length code comprising code words including a code decoded in forward and reverse directions to which a stuffing code decoded in a reverse direction for every prescribed synchronization period is inserted are decoded. This variable length decoder is provided with a synchronous period detection means 106 that detects a synchronous period of the coded data, a forward decoding means 108 that decodes the coded data for the synchronous period detected by the synchronous period detection means 106 in a forward direction, and a reverse direction decoding means 109 that decodes the coded data detected by the synchronous period detection means 106 in a reverse direction.
Inventors:
Takeshi Nakajo
Toshiaki Watanabe
Yoshihiro Kikuchi
Go Nagai
Toshiaki Watanabe
Yoshihiro Kikuchi
Go Nagai
Application Number:
JP29452299A
Publication Date:
April 10, 2000
Filing Date:
September 05, 1997
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
H03M7/40; H04J3/07; H04N19/147; H04N19/30; H04N19/423; H04N19/46; H04N19/503; H04N19/51; H04N19/60; H04N19/61; H04N19/625; H04N19/70; H04N19/91; (IPC1-7): H03M7/40
Domestic Patent References:
| JP8340258A | ||||
| JP5300027A |
Other References:
渡邊敏明 外３名「ＭＰＥＧ４対応低ビットレート動画像符号化方式」、信学技報 ＶＯＬ．９５ ＮＯ．５８１ ＩＥ９５−１４５ ＰＰ．３９−４４
Attorney, Agent or Firm:
Kazuo Sato (3 others)