Title:
METHOD AND DEVICE FOR SIGNAL CODING, METHOD AND DEVICE FOR SIGNAL DECODING AND RECORDING MEDIUM
Document Type and Number:
Japanese Patent JP3125543
Kind Code:
B2
Abstract:
PURPOSE: To facilitate coding/decoding in a fixed bit rate and to avoid the scale of the hardware from being increased.
CONSTITUTION: A signal subject to block processing by a buffer 41 is divided and normalized into plural units by an orthogonal transformation coding section 42, all or part of spectrum signals is subject to variable length coding by an entropy coding section 48 and the result is recorded or sent together with normalized coefficients and requantized bit numbers of each unit. Then an upper limit is provided to a bit number per block at a bit number discrimination circuit 51 and a bit number per one block of the signal to be recorded or sent does not exceeds the upper limit bit number by focibly changing the normalizing coefficient of the unit with a minimum normalization coefficient detection circuit 52 and a normalization coefficient correction circuit 50 with respect to a block requiring a bit number in excess of the upper limit.
Inventors:
Mifuyu Sonohara
Kyoya Tsutsui
Robert Heddle
Kyoya Tsutsui
Robert Heddle
Application Number:
JP29830593A
Publication Date:
January 22, 2001
Filing Date:
November 29, 1993
Export Citation:
Assignee:
ソニー株式会社
International Classes:
G10L19/02; G11B20/10; H03M7/30; H03M7/40; H04N19/115; H04N19/124; H04N5/92; H04N19/13; H04N19/132; H04N19/134; H04N19/136; H04N19/14; H04N19/146; H04N19/169; H04N19/174; H04N19/176; H04N19/18; H04N19/192; H04N19/196; H04N19/42; H04N19/423; H04N19/46; H04N19/60; H04N19/625; H04N19/635; H04N19/70; H04N19/80; H04N19/85; H04N19/91; (IPC1-7): H03M7/30; G11B20/10; H03M7/40; H04N5/92; H04N7/30
Domestic Patent References:
| JP2194734A | ||||
| JP349475A | ||||
| JP366281A | ||||
| JP310486A | ||||
| JP3159321A | ||||
| JP591335A |
Attorney, Agent or Firm:
Akira Koike (2 outside)