Disk type recording medium and disk recording and reproducing de

Details Disk type recording medium and disk recording and reproducing de Disk type recording medium and disk recording and reproducing de

1997-08-27

2000-02-22

Edun, Muhammad

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 58, 369 4413, G11B 700

Patent

active

060288280

ABSTRACT:
A disk type recording medium and a disk recording and reproducing device for use in constant linear velocity and zone constant angular velocity systems wherein the disk type recording medium has spiral or concentric grooves that are divided into a plurality of zones in the radial direction of the disk. Physical address information and sector boundary information are recorded by groove wobbling. Records of data are arranged on grooves with reference to sector boundary information on the condition that a wobble frequency of physical address information obtainable when rotating the disk at a constant angular velocity is constant within a unit zone and increases with each change of zones from inner to outer peripheral zones on the disk.

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