DATA RECORDING METHOD AND DATA RECORDING APPARATUS

Title:

DATA RECORDING METHOD AND DATA RECORDING APPARATUS

Document Type and Number:

WIPO Patent Application WO/2002/029809

Kind Code:

A1

Abstract:

A data recording method preferably used to record data on an optical disk such as a DVD+RW disk. If a normal write clock is correctly generated during write of data in a block area (A), the write of data is stopped and a re-allocation of the area (A) is performed. Predetermined data is written in the area (A) by using a reference clock in such a way that the data is written over the areas (A and A+1), thereby preventing any unrecorded portion due to the rotation fluctuation of the optical disk from being generated behind the block (A). Data is written in the area (A+1) by using a normal write clock. Re-allocation of the area (A+1) is also performed. Thus the problem that the tracking servo over the areas (A and A+1) fails is prevented.

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Inventors:

HORIBATA YOSHIHIRO (JP)
MINE NORICHIKA (JP)
KUMAI SATOSHI (JP)

Application Number:

PCT/JP2001/008813

Publication Date:

April 11, 2002

Filing Date:

October 05, 2001

Export Citation:

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Assignee:

SONY CORP (JP)
HORIBATA YOSHIHIRO (JP)
MINE NORICHIKA (JP)
KUMAI SATOSHI (JP)

International Classes:

G11B7/007; G11B20/12; G11B20/10; G11B20/14; G11B7/0045; G11B7/09; G11B20/18; (IPC1-7): G11B20/12; G11B20/10; G11B7/0045

Foreign References:

JPH06131824A	1994-05-13
JPH10149633A	1998-06-02
JP3074183B2	2000-08-07
US4375088A	1983-02-22
JPH1125460A	1999-01-29

Other References: