Disc player
AssigneePioneer Corporation
InventorsEisaku Kawano, Yoshitaka Shimoda, Hidehiro Ishii, Eiji Muramatsu, Masahiro Kato, Kunihiko Horikawa
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Abstract
In a disc player, a CAL pattern is recorded in a disc-like optical recording medium during a recording stand-by time period, which is yielded by a difference between a data rate in inputting information to a disc player 50 and a recording rate in recording information into the optical recording medium. The CAL pattern is reproduced from the optical recording medium, the reproduced pattern is evaluated, and an irradiation intensity of a laser beam is optimized for recording information in the optical recording medium, by a laser-output controller 30.
Claims17
A disc player, comprising:
- a laser device;
- and
- laser output control means for controlling a laser output power of said laser device at the time of actually recording information in a disc-like optical recording medium according to light being reflected from said recording medium in a recording test mode;
- wherein a recording test is performed during a recording stand-by time period, which is yielded by a difference between an information transmittal rate in inputting information to said disc player and an information recording rate in recording information into said optical recording medium.
A recording apparatus, comprising:
- a laser that irradiates a laser beam at least indirectly onto a recording medium;
- a controller that controls an output power of said laser based on a recording test that is performed during a predetermined period,
- wherein said predetermined period is determined based on a difference between an information input rate and an information recording rate, and
- wherein said information input rate is a rate at which data is input to said apparatus, and
- wherein said information recording rate is a rate at which data is recorded on said recording medium.
A method performed by a recording apparatus that records information on a recording medium via a laser, comprising:
- (a) determining a time period based on a difference between an information input rate and an information recording rate of said recording apparatus, wherein said information input rate is a rate at which data is input to said apparatus and wherein said information recording rate is a rate at which data is recorded on said recording medium;
- (b) performing a recording test during said time period;
- and
- (c) controlling an output power of said laser based on said recording test.
Dependencies are inferred from the claim text.