Disk recording apparatus, method, and recording control program

An optical disk recording method, comprising:

• emitting a first beam for irradiating a track on an optical disk so as to record data and second and third beams for irradiating spaces between the track and tracks on both sides of the track, respectively;
• detecting the first to third beams reflected from the optical disk;
• controlling tracking of the first beam based on the reflected first to third beams;
• and
• determining whether the first beam records data on a white portion of the track or overwrites data on a recorded portion of the track based on the changes in reflected light amounts of the second and third beams.

A recording control program for allowing a computer to execute an optical disk recording method, the optical disk recording method comprising:

• emitting a first beam for irradiating a track on an optical disk so as to record data and second and third beams for irradiating spaces between the track and tracks on both sides of the track, respectively;
• detecting the first to third beams reflected from the optical disk;
• controlling tracking of the first beam based on results of the reflected first to third beams;
• and
• determining whether the first beam records data on a white portion of the track or overwrites data on a recorded portion of the track based on changes in reflected light amounts of the second and third beams.

An optical disk recording apparatus, comprising:

• a beam emitting unit operable to emit a first beam for irradiating a track on an optical disk so as to record data and second and third beams for irradiating spaces between the track and tracks on both sides of the track, respectively;
• a light detection mechanism operable to detect the first to third beams reflected from the optical disk;
• a tracking controller operable to control tracking of the first beam on the basis of results of the reflected first to third beams detected by the light detection mechanism;
• and
• a determination unit operable to determine whether the first beam records data on a white portion of the track or overwrites data on a recorded portion of the track based on changes in reflected light amounts of the second and third beams detected by the light detection mechanism.