Title:
OPTICAL INFORMATION RECORDING MEDIUM AND OPTICAL DISK DRIVING DEVICE
Document Type and Number:
Japanese Patent JPH0744871
Kind Code:
A
Abstract:
PURPOSE: To provide an optical information recording medium capable of executing high-density recording in land and groove recording with high accuracy and an optical disk driving device.
CONSTITUTION: Land parts 2 and groove parts 3 are formed on the disk surface of the optical information recording medium 1 by inscribing tracks on this surface. Information is recorded and reproduced to and from both regions of the land parts 2 and the groove parts 3. The land parts 2 and the groove parts 3 are arranged by aligning the positions of data area start addresses 7, 8 of these parts to the position of either one of the inner peripheral side or outer peripheral side of the disk surface.
Inventors:
AOKI IKUO
TAKAHASHI YOSHITAKA
MAEKAWA HIROSHI
TAKAHASHI YOSHITAKA
MAEKAWA HIROSHI
Application Number:
JP18976193A
Publication Date:
February 14, 1995
Filing Date:
July 30, 1993
Export Citation:
Assignee:
RICOH KK
International Classes:
G11B7/007; G11B7/2407; G11B7/24073; G11B27/00; (IPC1-7): G11B7/007; G11B7/24; G11B27/00
Attorney, Agent or Firm:
Akira Kashiwagi (1 person outside)