Method for forming disk, disk forming apparatus, data recording/

Details Method for forming disk, disk forming apparatus, data recording/ Method for forming disk, disk forming apparatus, data recording/

1997-01-27

1998-05-19

Dinh, Tan

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

3692754, G11B 724

Patent

active

057545227

ABSTRACT:
In a disk with a wobbling pregroove, data can be recorded in high density. A recording/reproducing apparatus for recording/reproducing data on/from a disk in which a sector is constituted by one arbitrary integer (F) of data frames, a cluster is constituted by another arbitrary integer (S) of the sectors, and data is recorded or reproduced in unit of the sector, or in unit of the cluster, is comprised of: reading means for reading a track number of an access point of the disk; storing means for storing a table about the track number and a zone, in which the following relationship is established, i.e., in two sets of the zones located adjacent to each other, data frame number of the zone per 1 rotation provided on an outer circumferential side of the disk is set to a value larger than data frame number of the zone per 1 rotation provided on an inner circumferential side of the disk by another arbitrary integer (K), the integer (K) being smaller than the integer (F); judging means for judging the zone belonging to the track number read by the reading means with reference to the table of the storing means; and generating means for generating a clock having a predetermined frequency in response to a judgment result the judging means.

REFERENCES:
patent: 5339302 (1994-08-01), Takahashi et al.
patent: 5587901 (1996-12-01), Yamagami et al.
patent: 5696752 (1997-12-01), Hajjar et al.

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