Method of recognizing track pitch of optical disk
AssigneeSunplus Technology Co., Ltd.
InventorsYao-Wen Chang, Pin-Ju Wu
Life of this patent
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Abstract
A method of recognizing a track pitch of an optical disk, adapted for an optical disk player, is provided. The method includes the steps of driving an optical pickup head to a predetermined position, so that the optical pickup head and the spindle motor are a predetermined distance apart, reading a data sector address, and recognizing the magnitude of the track pitch of the optical disk according to the value of the data sector address.
Claims12
A method of recognizing a track pitch of an optical disk, adapted for an optical disk player, the optical disk player having a spindle motor and an optical pickup head, the spindle motor configured to rotate an optical disk, the optical pickup head configured to read the optical disk, the method comprising:
- driving the optical pickup head to a predetermined position so that the optical pickup head and an axis of the spindle motor is a predetermined distance apart;
- reading a data sector address on the optical disk;
- and
- recognizing a magnitude of the track pitch of the optical disk according to a value of the data sector address.
A method of recognizing a track pitch of an optical disk, adapted for an optical disk player, the optical disk player having a spindle motor and an optical pickup head, the spindle motor configured to rotate an optical disk, the optical pickup head configured to read the optical disk, the method comprising:
- storing a reference disk data comprising a track pitch of a reference optical disk and an address corresponding to a predetermined read distance;
- detecting an eccentric track number of a target optical disk;
- driving the optical pickup head to a predetermined position to read a data sector address on the target optical disk;
- and
- calculating a track pitch of the target optical disk according to the data sector address, the eccentric track number, and the reference disk data.
Dependencies are inferred from the claim text.