Recording medium, a method for producing the same, a control met

Details Recording medium, a method for producing the same, a control met Recording medium, a method for producing the same, a control met

1996-08-27

1998-09-29

Tran, Thang V.

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

369 4426, G11B 700

Patent

active

058154850

ABSTRACT:
A disk-shaped recording medium includes a plurality of first tracks and a plurality of second tracks for recording data, the first track and the second track being alternately arranged in the radial direction on the surface of the recording medium in one of a pattern of concentric circles and a spiral pattern; a plurality of first servo areas and a plurality of second servo areas discretely located at a plurality of respective specified rotation angular positions of the surface along the circumferential direction of the recording medium; and a plurality of first servo marks and a plurality of second servo marks used for tracking control. The first servo marks are provided in the first servo areas along each of the first tracks, and the servo marks are provided in the second servo areas along each of the second tracks.

REFERENCES:
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patent: 5295131 (1994-03-01), Ishibashi et al.
patent: 5321675 (1994-06-01), Ito et al.
patent: 5406545 (1995-04-01), Kadowaki

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