Title:
【発明の名称】ディスク記録装置および方法
Document Type and Number:
Japanese Patent JP2885232
Kind Code:
B2
Abstract:
A device for checking the recording state of a magneto-optical recording disk includes a detector for detecting a s-polarized light component and a p-polarized light component from a reflected light reflected from the portion of the magneto-optical recording disk. One of the s-polarized and p-polarized light components is subtracted from the other to produce a difference signal and the s-polarized and p-polarized light components are added to produce an addition signal. The difference signal is divided by the addition signal to produce a normalized detection signal. The recording state is determined based on a level change of the normalized detection signal while data is being recorded onto the magneto-optical recording disk.
Inventors:
MUKODA MASARU
Application Number:
JP17207197A
Publication Date:
April 19, 1999
Filing Date:
June 27, 1997
Export Citation:
Assignee:
NIPPON DENKI KK
International Classes:
G11B11/105; G11B20/18; G11B11/10; G11B27/36; (IPC1-7): G11B11/10; G11B11/10
Domestic Patent References:
| JP61276149A |
Attorney, Agent or Firm:
Wakabayashi Tadashi