Method for accessing desired track on disk with plurality of rec

Details Method for accessing desired track on disk with plurality of rec Method for accessing desired track on disk with plurality of rec

1993-11-22

1994-08-30

Young, W. R.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4426, 369 4432, 369 32, 369 50, 369 58, G11B 7085

Patent

active

053434536

ABSTRACT:
An apparatus for recording and/or reproducing information with respect to a disk-like recording medium having a recording surface divided into a plurality of concentric circular zones each including a plurality of tracks with an address recorded thereon at an angular velocity or frequency varying with the individual zones, includes, a device for scanning the tracks for recording and/or reproducing information, a device for detecting an address of a track being scanned by the recording and/or reproducing device, a device for shifting the recording and/or reproducing device from a track being scanned to another track, and a control device for determining, if an address of a desired track cannot be detected when accessing the desired track during shifting of the recording and/or reproducing device to a zone different from a zone to which the desired track belongs, and shifting, as a result, the recording and/or reproducing device to a different track.

REFERENCES:
patent: 4546462 (1985-10-01), Koishi et al.
patent: 4611315 (1986-09-01), Ogino
patent: 4841498 (1989-06-01), Sugimura et al.
patent: 4873679 (1989-10-01), Murai et al.
patent: 4896311 (1990-01-01), Ishihara
patent: 4918676 (1990-04-01), Miyasaka
patent: 5018124 (1991-05-01), Ogasawara et al.

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