JPS6462839A - Information recording medium and information operating method thereof - Google Patents
Information recording medium and information operating method thereofInfo
- Publication number
- JPS6462839A JPS6462839A JP62219920A JP21992087A JPS6462839A JP S6462839 A JPS6462839 A JP S6462839A JP 62219920 A JP62219920 A JP 62219920A JP 21992087 A JP21992087 A JP 21992087A JP S6462839 A JPS6462839 A JP S6462839A
- Authority
- JP
- Japan
- Prior art keywords
- information
- phases
- recording layer
- recorded
- magneto
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Thermal Transfer Or Thermal Recording In General (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE:To eliminate the need for magnetic field impressing device and to reduce the size and energy of an information recording and reproducing device by using a material which can be changed in phases and is different in magneto- optic effect with the respective phases as a recording layer. CONSTITUTION:A protective layer 2, the recording layer 3, a protective layer 4 and a protective layer 5 are formed in this order on a substrate 1. The recording layer 3 is formed of the material which can attain the two different phases, can be changed in the phases between said phases by irradiation of a light beam and is changed in magnetic properties by the phase states thereof. Information is recorded and erased by projecting the light beam to this recording layer so as to generate the phase change in the part irradiated with the light. Reproduction of the information is executed in accordance with the difference in the magneto-optic effect between the recorded part and non-recorded part of the information by projecting the light beam to the recording layer where the information is recorded. Since the information is reproduced by detecting the difference in the magneto-optic effect of the different phases in such a manner, the need for external magnetic fields is eliminated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62219920A JP2553100B2 (en) | 1987-09-02 | 1987-09-02 | Information operation method of information recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62219920A JP2553100B2 (en) | 1987-09-02 | 1987-09-02 | Information operation method of information recording medium |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6462839A true JPS6462839A (en) | 1989-03-09 |
JP2553100B2 JP2553100B2 (en) | 1996-11-13 |
Family
ID=16743091
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62219920A Expired - Fee Related JP2553100B2 (en) | 1987-09-02 | 1987-09-02 | Information operation method of information recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2553100B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100429843B1 (en) * | 2001-09-22 | 2004-05-03 | 삼성전자주식회사 | High density data storage method utilizing electron emission, phase change media and storage system adopting the same and data storage media for the system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61148643A (en) * | 1984-12-21 | 1986-07-07 | Victor Co Of Japan Ltd | Recording material of information recording medium |
JPS61195949A (en) * | 1985-02-25 | 1986-08-30 | Hitachi Ltd | Alloy having variable spectral reflectance and recording material |
-
1987
- 1987-09-02 JP JP62219920A patent/JP2553100B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61148643A (en) * | 1984-12-21 | 1986-07-07 | Victor Co Of Japan Ltd | Recording material of information recording medium |
JPS61195949A (en) * | 1985-02-25 | 1986-08-30 | Hitachi Ltd | Alloy having variable spectral reflectance and recording material |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100429843B1 (en) * | 2001-09-22 | 2004-05-03 | 삼성전자주식회사 | High density data storage method utilizing electron emission, phase change media and storage system adopting the same and data storage media for the system |
Also Published As
Publication number | Publication date |
---|---|
JP2553100B2 (en) | 1996-11-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |