OPTICAL DISK DEVICE AND TILT CORRECTION METHOD

PROBLEM TO BE SOLVED: To carry out more accurate tilt correction in an optical disk device which measures tilt at each position in the radial direction of a disk to store it, and corrects the tilt based on the tilts stored during recording/playing. SOLUTION: A plurality of tilt detection positions f...

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Bibliographic Details
Main Authors NINOMIYA MASAKI, ONO TAKEHIDE
Format Patent
LanguageEnglish
Published 25.03.2004
Edition7
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To carry out more accurate tilt correction in an optical disk device which measures tilt at each position in the radial direction of a disk to store it, and corrects the tilt based on the tilts stored during recording/playing. SOLUTION: A plurality of tilt detection positions for detecting tilt before recording/playing are preset so that the interval of the tilt detection positions in the radial direction of an optical disk 1 is gradually narrowed from the inner peripheral side to the outer peripheral side of the optical disk 1. When tilt is detected before recording/reproducing, tilt is detected at each tilt detection position, and the tilt correction value corresponding to the tilt detection position is stored in a memory 12. COPYRIGHT: (C)2004,JPO
Bibliography:Application Number: JP20020253738