Writing method and disk recording apparatus

A disk recording apparatus for a rewritable optical disk, the disk recording apparatus comprising:

• a first timing detector having a first timing synchronized with a wobble reproduction signal of the rewritable optical disk;
• a second timing detector having a second timing synchronized with a track reproduction signal of the rewritable optical disk;
• a phase difference detector configured to detect a phase difference between the first timing and the second timing;
• and
• a controller configured to determine a recording area based on the detected phase difference,
• wherein the phase difference between the first timing and the second timing is yT, y is a positive number, and T is a channel bit which is a basic unit for a recording mark length on an optical disk;
• wherein the controller is configured to employ the detected phase difference to calculate an amount n of error data relative to the track reproduction signal, n being a natural number;
• wherein, if n>m is established as a relationship between the amount n of error data and a preset permissible amount m of error data, m being a natural number, the controller is configured to control writing of data on a recording area using a preset reserved area or an empty area on the optical disk;
• and
• wherein, if n≦m is established, the controller is configured to control writing of data to a target track on the optical disk.

A disk recording apparatus for a rewritable optical disk, the disk recording apparatus comprising:

• a first timing detector having a first timing synchronized with a wobble reproduction signal of the rewritable optical disk;
• a second timing detector having a second timing synchronized with a track reproduction signal of the rewritable optical disk;
• a phase difference detector configured to detect a phase difference between the first timing and the second timing;
• and
• a controller configured to determine a recording area based on the detected phase difference,
• wherein if the controller determines that the recording area for writing the data is a target track on the optical disk, the controller is configured to control a selector to select a recording timing based on the detected phase difference, and to record data on a recording track in accordance with the selected timing;
• wherein the phase difference between the first timing and the second timing is yT, y is a positive number, and T is a channel bit which is a basic unit for a recording mark length on an optical disk;
• wherein, if |y|>|w| is established as a relationship between the detected phase difference yT and a preset permissible cycle error value wT of a sync signal detected in the track reproduction signal and w is a positive number, the controller is configured to select the second timing;
• and
• wherein, if |y|≦|w| is established, the controller is configured to select the first timing.

A disk recording apparatus for a rewritable optical disk, the disk recording apparatus comprising:

• a first timing detector having a first timing synchronized with a wobble reproduction signal of the rewritable optical disk;
• a second timing detector having a second timing synchronized with a track reproduction signal of the rewritable optical disk;
• a phase difference detector configured to detect a phase difference between the first timing and the second timing;
• and
• a controller configured to determine a recording area based on the detected phase difference,
• wherein if the controller determines that the recording area for writing the data is a target track on the optical disk, the controller is configured to control a selector to select a recording timing based on the detected phase difference, and to record data on a recording track in accordance with the selected timing;
• wherein the phase difference between the first timing and the second timing is yT, y is a positive number, and T is a channel bit which is a basic unit for a recording mark length on an optical disk;
• wherein the controller is configured to employ the detected phase difference to calculate an amount n of error data relative to the track reproduction signal, n being a natural number;
• wherein, if n>m is established as a relationship between the amount n of error data and a preset permissible amount m of error data, m being a natural number, the controller is configured to select the second timing;
• and
• wherein, if n≦m is established, the controller is configured to select the first timing.

A disk recording apparatus for a rewritable optical disk, the disk recording apparatus comprising:

• a first timing detector having a first timing synchronized with a wobble reproduction signal of the rewritable optical disk;
• a second timing detector having a second timing synchronized with a track reproduction signal of the rewritable optical disk;
• a phase difference detector configured to detect a phase difference between the first timing and the second timing;
• a selector configured to select a timing between the first timing and the second timing;
• and
• a controller configured to control the selector to select the timing based on the detected phase difference, and to record data on a recording track in accordance with the selected timing,
• wherein the phase difference between the first timing and the second timing is yT, y is a positive number, and T is a channel bit which is a basic unit for a recording mark length on an optical disk;
• wherein, if |y|>|w| is established as a relationship between the detected phase difference yT and a preset permissible cycle error value wT of a sync signal detected in the track reproduction signal and w is a positive number, the controller is configured to select the second timing;
• and
• wherein, if |y|≦|w| is established, the controller is configured to select the first timing.

A disk recording apparatus for a rewritable optical disk, the disk recording apparatus comprising:

• a first timing detector having a first timing synchronized with a wobble reproduction signal of the rewritable optical disk;
• a second timing detector having a second timing synchronized with a track reproduction signal of the rewritable optical disk;
• a phase difference detector configured to detect a phase difference between the first timing and the second timing;
• a selector configured to select a timing between the first timing and the second timing;
• and
• a controller configured to control the selector to select the timing based on the detected phase difference, and to record data on a recording track in accordance with the selected timing,
• wherein the phase difference between the first timing and the second timing is yT, y is a positive number, and T is a channel bit which is a basic unit for a recording mark length on an optical disk;
• wherein the controller is configured to employ the detected phase difference to calculate an amount n of error data relative to the track reproduction signal, n being a natural number;
• wherein, if n>m is established as a relationship between the amount n of error data and a preset permissible amount m of error data, m being a natural number, the controller is configured to select the second timing;
• and
• wherein, if n≦m is established, the controller is configured to select the first timing.

A disk recording method for a rewritable optical disk, the method comprising:

• detecting a phase difference between a first timing synchronized with a wobble reproduction signal of the rewritable optical disk and a second timing synchronized with a track reproduction signal of the rewritable optical disk;
• and
• determining a recording area for target data to be written based on the detected phase difference,
• wherein the phase difference between the first timing and the second timing is yT, y is a positive number, and T is a channel bit which is a basic unit for a recording mark length on an optical disk;
• wherein, if |y|>|w| is established as a relationship between the detected phase difference yT and a preset permissible cycle error value wT of a sync signal detected in the track reproduction signal and w is a positive number, the target data is written on a recording area using a preset reserved area or an empty area on the optical disk;
• and
• wherein, if |y|≦|w| is established, the target data is written to a target track on the optical disk.

A disk recording method for a rewritable optical disk, the method comprising:

• detecting a phase difference between a first timing synchronized with a wobble reproduction signal of the rewritable optical disk and a second timing synchronized with a track reproduction signal of the rewritable optical disk;
• and
• determining a recording area for target data to be written based on the detected phase difference,
• wherein the phase difference between the first timing and the second timing is yT, y is a positive number, and T is a channel bit which is a basic unit for a recording mark length on an optical disk;
• further comprising employing the detected phase difference to calculate an amount n of error data relative to the track reproduction signal, n being a natural number;
• wherein, if n>m is established as a relationship between the amount n of error data and a preset permissible amount m of error data, m being a natural number, the target data is written on a recording area using a preset reserved area or an empty area on the optical disk;
• and
• wherein, if n≦m is established, the target data is written on a target track on the optical disk.

A disk recording method for a rewritable optical disk, the method comprising:

• detecting a phase difference between a first timing synchronized with a wobble reproduction signal of the rewritable optical disk and a second timing synchronized with a track reproduction signal of the rewritable optical disk;
• determining a recording area for target data to be written based on the detected phase difference;
• and
• if the recording area for the target data to be written is determined to be a target track on the optical disk, selecting a recording timing between the first timing and the second timing based on the detected phase difference;
• wherein the phase difference between the first timing and the second timing is yT, y is a positive number, and T is a channel bit which is a basic unit for a recording mark length on an optical disk;
• wherein, if |y|>|w| is established as a relationship between the detected phase difference yT and a preset permissible cycle error value wT of a sync signal detected in the track reproduction signal and w is a positive number, the second timing is selected as the recording timing;
• and
• wherein, if |y|≦|w| is established, the first timing is selected as the recording timing.

A disk recording method for a rewritable optical disk, the method comprising:

• detecting a phase difference between a first timing synchronized with a wobble reproduction signal of the rewritable optical disk and a second timing synchronized with a track reproduction signal of the rewritable optical disk;
• determining a recording area for target data to be written based on the detected phase difference;
• and
• if the recording area for the target data to be written is determined to be a target track on the optical disk, selecting a recording timing between the first timing and the second timing based on the detected phase difference;
• wherein the phase difference between the first timing and the second timing is yT, y is a positive number, and T is a channel bit which is a basic unit for a recording mark length on an optical disk;
• further comprising employing the detected phase difference to calculate an amount n of error data relative to the track reproduction signal, n being a natural number;
• wherein, if n>m is established as a relationship between the amount n of error data and a preset permissible amount m of error data, m being a natural number, the second timing is selected as the recording timing;
• and
• wherein, if n≦m is established, the first timing is selected as the recording timing.

A disk recording method for a rewritable optical disk, the method comprising:

• detecting a phase difference between a first timing synchronized with a wobble reproduction signal of the rewritable optical disk and a second timing synchronized with a track reproduction signal of the rewritable optical disk;
• selecting a recording timing between the first timing and the second timing based on the detected phase difference;
• and
• recording data to the rewritable optical disk in accordance with the selected recording timing,
• wherein the phase difference between the first timing and the second timing is yT, y is a positive number, and T is a channel bit which is a basic unit for a recording mark length on an optical disk;
• wherein, if |y|>|w| is established as a relationship between the detected phase difference yT and a preset permissible cycle error value wT of a sync signal detected in the track reproduction signal and w is a positive number, the second timing is selected as the recording timing;
• and
• wherein, if |y|≦|w| is established, the first timing is selected as the recording timing.

A disk recording method for a rewritable optical disk, the method comprising:

• detecting a phase difference between a first timing synchronized with a wobble reproduction signal of the rewritable optical disk and a second timing synchronized with a track reproduction signal of the rewritable optical disk;
• selecting a recording timing between the first timing and the second timing based on the detected phase difference;
• and
• recording data to the rewritable optical disk in accordance with the selected recording timing,
• wherein the phase difference between the first timing and the second timing is yT, y is a positive number, and T is a channel bit which is a basic unit for a recording mark length on an optical disk;
• further comprising employing the detected phase difference to calculate an amount n of error data relative to the track reproduction signal, n being a natural number;
• wherein, if n>m is established as a relationship between the amount n of error data and a preset permissible amount m of error data, m being a natural number, the second timing is selected as the recording timing;
• and
• wherein, if n≦m is established, the first timing is selected as the recording timing.