Title:
OPTICAL RECORDING MEDIUM AND DATA REPRODUCTION APPARATUS FOR REPRODUCTION OF DATA FROM OPTICAL RECORDING MEDIUM
Document Type and Number:
Japanese Patent JP3682725
Kind Code:
B2
Abstract:
PURPOSE: To obtain an optical recording medium on which data is recorded at high density and to obtain a data reproduction apparatus in which data can be reproduced from the medium.
CONSTITUTION: Pits (p) at a high density at which a plurality of pits are included in the range Fs of a spot by a laser beam are arranged in a land on an optical disk 10 so as to correspond to recorded data. In addition, a data reproduction apparatus is provided with a detection circuit 34 which outputs a detection signal based on reflected light obtained by shining the laser beam at the optical disk 10 and with a signal processing circuit 35 which reproduces recorded data based on a change in the detection signal from the detection circuit 34.
Inventors:
Koji Matsumoto
Tsutomu Tanaka
Keiji Shono
Tsutomu Tanaka
Keiji Shono
Application Number:
JP16938493A
Publication Date:
August 10, 2005
Filing Date:
July 08, 1993
Export Citation:
Assignee:
富士通株式会社
International Classes:
G11B7/005; G11B7/007; G11B7/013; G11B7/14; G11B11/10; G11B11/105; G11B20/12; (IPC1-7): G11B7/005
Domestic Patent References:
| JP5089470A | ||||
| JP5040952A |
Attorney, Agent or Firm:
Tadahiko Ito
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