Title:
【発明の名称】データ再生装置
Document Type and Number:
Japanese Patent JP2967333
Kind Code:
B2
Abstract:
A data reproduction apparatus for reproducing data corresponding to front and rear edges of marks is recorded in an optical disk. The apparatus includes an optical head for obtaining a reproduction waveform from the optical disk, an A/D converter for obtaining a real sampling value from the reproduction waveform so as to detect an ascending edge (or a descending edge), an interpolator for obtaining a descending edge (or ascending edge) calculate sampling value through interpolation using the real sampling value, and a maximum likelihood detector for detecting a maximum likelihood signal on the basis of a real sampling value and the interpolated sampling value.
Inventors:
TAGUCHI MASAKAZU
IZUMI HARUHIKO
IZUMI HARUHIKO
Application Number:
JP14500695A
Publication Date:
October 25, 1999
Filing Date:
June 12, 1995
Export Citation:
Assignee:
FUJITSU KK
International Classes:
G11B20/14; G11B7/00; G11B7/005; G11B20/10; G11B20/18; G11B11/105; (IPC1-7): G11B7/00; G11B20/10; G11B20/18
Domestic Patent References:
| JP556958A |
Other References:
今井、三宅，“信号処理方式ＰＲＭＬ”，日経エレクトロニクス，日経ＢＰ社，平成６年１月，第５９９号，ｐ．７２−９７
Attorney, Agent or Firm:
Tono Kono