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AssigneesHitachi, Ltd., Hitachi-LG Data Storage, Inc.
InventorsTakeyoshi Kataoka, Nobuhiro Takeda, Tsuyoshi Toda
Estimating the term…
For achieving pulling operation into tracking servo during seek operation at high-speed and with stability, in timing thereof, even on an optical disk forming lands and grooves on a recording surface thereof, in a seek control method, according to the present invention, for moving an optical spot onto an arbitrary track through movement of an optical pickup 110 into the radial direction on the optical disk forming the lands and the grooves, thereby forming a track on the recording surface thereof, in particular, in the seek operation, measurement is made on a period of a tracking error (TE) signal generated due to the movement in the radial direction, and a time point when the measured period of the tracking error signal exceeds a predetermined value is determined to be a starting point for pulling the optical spot of the optical pickup into the track, through the tracking servo, thereby pulling it selectively, into either one of the land and the groove building up the track.
A seek control method of an optical disk recording/reproducing apparatus, for moving an optical spot onto an arbitrary track, moving an optical pickup into a radial direction thereof to an optical information recording medium, forming lands and grooves spirally on an information recording surface thereof, comprising the following steps of:
An optical disk recording/reproducing apparatus enabling to record or reproduce information onto/from an optical information recording medium, forming lands and grooves, thereby building up a spiral track on an information recording surface thereof, comprising:
Dependencies are inferred from the claim text.