Method for adjusting recording power and optical disk apparatus
AssigneeHitachi-LG Data Storage, Inc.
InventorsTetsuya Fushimi, Atsushi Yamada, Jinya Ikeda
Life of this patent
Estimating the term…
Abstract
A method for adjusting recording power of an optical disk apparatus having an output circuit that outputs recording light onto a test writing area of an optical disk, and a control circuit that adjusts the recording power of the recording light outputted from the output circuit, the method including the steps of causing the control circuit to erase a recording mark recorded onto the test writing area, to record a recording mark onto the test writing area in constant recording power lower than threshold power for starting a recording operation, and to record a recording mark onto the test writing area while changing the recording power.
Claims20
A method for adjusting recording power of an optical disk apparatus having an output circuit configured to output recording light onto a test writing area of an optical disk, and a control circuit configured to adjust the recording power of the recording light outputted from the output circuit onto a test writing area of an optical disk, the method including the following steps executed by the control circuit:
- erasing a recording mark recorded onto the test writing area;
- recording a recording mark onto the test writing area in constant recording power lower than a threshold power for starting a recording operation;
- and
- after the step of recording the recording mark onto the test writing area in constant recording power lower than a threshold power for starting a recording operation, recording a recording mark onto the test writing area while changing the recording power.
An optical disk apparatus comprising:
- an output circuit configured to output recording light onto a test writing area of an optical disk;
- and
- a control circuit configured to adjust recording power of the recording light outputted from the output circuit, wherein:
- the control circuit is configured to control the recording power so as to:
- erase a recording mark recorded onto the test writing area,
- record a recording mark onto the test writing area in a constant recording power lower than a threshold power for starting a recording operation, and
- after recording the recording mark onto the test writing area in a constant recording power lower than a threshold power for starting a recording operation, recording the recording mark onto the test writing area while changing the recording power.
An optical disk apparatus comprising:
- an output circuit configured to output recording light onto a test writing area of an optical disk;
- and
- a control circuit configured to adjust the recording power of the recording light used for recording on a user data area ,
- wherein said control circuit is configured to execute the following processes:
- an erasing process to an area of the test writing area on which the test writing is going to be made while changing the recording power,
- a recording process of recording a recording mark onto the same area of the test writing area as that of the erasing process, in a constant recording power lower than a predetermined power, followed by
- a test writing process onto the same area of the test writing area as that of the recording mark created by the recorded process, while changing the recording power.
A method for adjusting recording power of an optical disk apparatus having an output circuit configured to output recording light onto a test writing area of an optical disk, and a control circuit configured to adjust the recording power of the recording light outputted from the output circuit and used for recording on a user data area, the method including the following steps executed by the control circuit:
- erasing an area of the test writing area on which the test writing is going to be made while changing the recording power,
- recording a recording mark onto the same area of the test writing area as that of the erasing, in a constant recording power lower than a predetermined power, followed by
- test writing onto the same area of the test writing area as that of the recording mark created by the recording, while changing the recording power.
Dependencies are inferred from the claim text.