Optical recording/reproducing apparatus
AssigneeCanon Kabushiki Kaisha
InventorSuguru Kusanagi
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Abstract
The present invention provides an optical recording/reproducing apparatus which can record information on the whole plane of the optical disk with a stable quality, even when the temperature has largely changed during a recording standby period in an intermittent recording process. The present optical recording/reproducing apparatus reproduces the information from a recorded portion on which the information has been already recorded, to evaluate the signal quality of the reproduced information, and simultaneously detects a temperature in the apparatus to correct a recording power of a laser beam when restarting the recording, on the basis of the evaluation result and the detected temperature in the apparatus, during the recording standby period in the intermittent recording process.
Claims5
An optical recording/reproducing apparatus for intermittently recording information on an optical disk comprising:
- a light source used for recording the information on the optical disk;
- a sensor for reproducing the information from a recorded portion on which the information has been already recorded and evaluating the signal quality of the reproduced information, during a recording standby period in the intermittent recording process;
- a sensor for detecting a temperature in the apparatus;
- and
- a circuit for correcting a power of a laser beam emitted from the light source, on the basis of the evaluation result and the detected temperature in the apparatus,
- wherein the correction circuit corrects the power of the light source on the basis of the evaluation result, and further corrects the corrected power of the laser beam on the basis of temperature differences among a plurality of temperatures in the apparatus, which have been measured at the plurality of timings in the recording standby period.
Dependencies are inferred from the claim text.