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Patent Searching and Data


Title:
OPTICAL INFORMATION RECORDING MEDIUM AND RECORDING/ REPRODUCING DEVICE
Document Type and Number:
Japanese Patent JPH0944855
Kind Code:
A
Abstract:

To provide an optical information recording medium on which a position information can be recorded without modulating tracking guide groove and from which information can be taken out without influence of adjacent tracks.

In the optical information recording medium on which main information is recorded on a recording track in its direction and in the said medium of a servo tracking method which performs tracking with a pair of pits A (a, b) formed with a slight displacement from the above of the track, it is featured that signals TS, TL showing the position information of the recording medium are recorded and formed with the interval of the above servo pit pair A (a, b) and B (a, b'). Namely, in the optical information recording medium of this invention, the position information of the recording medium can be recorded by superposing (varying the interval between a pair of the servo pits) the position information on a pair of the servo pits adopted in the sample servo method.


Inventors:
ENDO HIDEYASU
Application Number:
JP19387395A
Publication Date:
February 14, 1997
Filing Date:
July 28, 1995
Export Citation:
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Assignee:
RICOH KK
International Classes:
G11B7/007; G11B7/095; G11B7/24085; G11B7/24091; (IPC1-7): G11B7/007; G11B7/095; G11B7/24
Attorney, Agent or Firm:
Toru Kabayama (1 person outside)