JP2008512817A5

JP2008512817A5 -

Info

Publication number: JP2008512817A5
Application number: JP2007531078A
Authority: JP
Filing date: 2005-09-12
Publication date: 2008-11-06

Claims

A method of recording data on a recording medium including a wobble-shaped test area,
The method
(B) searching for an OPC start position of the test area;
(C) executing an OPC (Optimum Power Control) process to calculate an optimum recording power at the searched OPC start position;
(D) recording data in a data area using the calculated optimum recording power.

The method according to claim 1, wherein the step (b) searches for the OPC start position of the test area by counting the number of wobbles at a reference position.

The method according to claim 1, wherein in the step (b), the OPC start position of the test area is the same as the information in the matching table by counting the number of wobbles at the reference position.

The method of claim 1, further comprising the step of: (a) determining a used test area.

The method of claim 1, further comprising the step of determining a size of an OPC area required for a current OPC process.

The method according to claim 1, wherein the recording medium is a recordable Blu-ray disc (BD-R).

The method of claim 1, wherein the test area is an OPC area positioned in an internal area.

The method of claim 1, wherein the test area is a DCZ area positioned in an external area.

5. The method according to claim 4, wherein the step (a) determines the used test area based on management information stored in the recording medium.

The method according to claim 9, wherein the management information is stored in a management area of the recording medium.

The method according to claim 10, wherein the management information indicates a start position of the used test area.

The method of claim 1, wherein step (b) includes determining a wobble count reference position when a predetermined reference wobble is detected.

The method of claim 2, wherein step (b) includes determining a wobble count reference position indicative of a starting position of a physical cluster.

The method of claim 2, wherein step (b) includes determining a wobble count reference position indicating a start position of an ADIP word.

The method of claim 14, wherein the start position of the ADIP word is recognized by information of an ADIP unit included in the ADIP word.

The method of claim 2, wherein the step (b) determines the OPC start position based on a size of an OPC area required for a current OPC process.

The method of claim 16, wherein the OPC start position varies depending on a size of an OPC area required for the current OPC process.

The method of claim 3, wherein the information in the matching table includes AUN information, ADIP word information, and ADIP unit information.

The method of claim 18, wherein the ADIP unit information included in the matching table indicates ADIP unit information of an individual ADIP word.

The step (b)
Determining a wobble count start reference position based on ADIP word start information;
The method according to claim 1, further comprising: searching for an OPC execution start position of the recording medium by counting the number of wobbles at the wobble count start reference position.

The method of claim 20, wherein the test area is one of an OPC area arranged in an internal direction and a DCZ area arranged in an external direction.

The step (b)
Determining a wobble count start reference position based on ADIP word start information;
The method according to claim 1, further comprising: searching for an OPC execution start position of the recording medium by counting the number of wobbles corresponding to a matching table at the wobble count start reference position.

The method of claim 22, wherein the matching table information includes AUN information, ADIP word information, and ADIP unit information.

An apparatus for recording data on a recording medium,
An OPC (Optimum Power Control) start position is searched in the test area of the recording medium, an OPC process is executed at the searched OPC start position, an optimum recording power is calculated, and the calculated optimum recording power is used. A recording / playback unit configured to record data,
And a control device configured to control the recording / reproducing unit according to a command.

Further comprising a memory configured to store matching table information;
25. The apparatus according to claim 24, wherein the recording / reproducing unit searches an OPC start position in a test area of the recording medium using information in a matching table in the memory.

The apparatus of claim 25, wherein the memory stores information of the matching table including AUN information, ADIP word information, and ADIP unit information.

27. The apparatus of claim 26, wherein the ADIP unit information included in the matching table indicates ADIP unit information of individual ADIP words.

25. The apparatus of claim 24, wherein the recording / reproducing unit searches for an OPC start position of the test area by counting the number of wobbles at a reference position.

The apparatus according to claim 24, wherein the recording / reproducing unit searches for an OPC start position of the test area that is the same as the information in the matching table by counting the number of wobbles at a reference position.

The recording / reproducing unit determines a wobble count start reference position based on ADIP word start information, and searches for an OPC execution start position of the recording medium by counting the number of wobbles at the wobble count start reference position. 25. The apparatus of claim 24.

The recording / reproducing unit determines a wobble count start reference position based on ADIP word start information, and counts the number of wobbles corresponding to a matching table at the wobble count start reference position, thereby performing an OPC execution start position of the recording medium. 25. The apparatus of claim 24, wherein:

A recording medium including an internal area, a data area, and an external area,
A test area included in at least one of the inner area and the outer area;
A management area for storing position information indicating positions available for testing in the test area, the position information being the same as the information in the matching table by counting the number of wobbles at the reference position A recording medium characterized by the above.

The recording medium according to claim 32, wherein the information in the matching table includes AUN information, ADIP word information, and ADIP unit information.

The recording medium according to claim 32, wherein the ADIP unit information included in the matching table indicates ADIP unit information of each ADIP word.