Patent ID: 6061316
Filing Date: 2000-05-09
Classification: G11B

Abstract:
A recording/reproducing apparatus for recording data in or reproducing data from an information recording medium having a plurality of tracks, including:a test data recording track for recording test data; anda test data reproducing track for reproducing a signal adjacent to the test data recording track on which the test data is recorded, the recording/reproducing apparatus comprising:an optical head for outputting a laser beam;a driving circuit for driving the optical head;a signal level measuring device for measuring a level of a signal reproduced from the information recording medium; anda controller for erasing data on the test data reproducing track:(a) controlling the driving circuit in such a manner that test data is recorded on the test data recording track after erasing data on the test data reproducing track using the laser beam output from the optical head,(b) controlling the driving circuit in such a manner that a signal is reproduced from the test data reproducing track after the test data is recorded on the test data recording track,(c) measuring a level of the signal reproduced from the test data reproducing track using the signal level measuring device, and(d) determining an optimum value of an output value of the laser beam output from the optical head in accordance with the level of the signal reproduced from the test data reproducing track.