JPS6410447A - Magneto-optical recording and reproducing device - Google Patents
Magneto-optical recording and reproducing deviceInfo
- Publication number
- JPS6410447A JPS6410447A JP16416387A JP16416387A JPS6410447A JP S6410447 A JPS6410447 A JP S6410447A JP 16416387 A JP16416387 A JP 16416387A JP 16416387 A JP16416387 A JP 16416387A JP S6410447 A JPS6410447 A JP S6410447A
- Authority
- JP
- Japan
- Prior art keywords
- information
- recorded
- magnetic field
- external magnetic
- data
- 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.)
- Pending
Links
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
PURPOSE:To attain overwriting without requiring erasure action by means of one pickup by reading sector information of a data management area and using the information so as to attain the changeover of an external magnetic field and the selection of the delay in the recorded data pulse. CONSTITUTION:The magneto-optical recording medium is provided with a data management area 35 and the information recording method of each sector is recorded to the area. The data management are 35 is read in the step 40 to read the recording method of each sector corresponding to the constitution of a file to be recorded. After the information is used to discriminate the direction of an external magnetic field and the delay in the clock of the recorded data, the clock is retarded so as to bring the trailing edge of a recording pulse comes in the middle of the data cell in the step 43 and the direction of the external magnetic field is switched properly in the step 44. Thus, only one optical pickup applies overwrite without requiring the erasure action.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16416387A JPS6410447A (en) | 1987-07-01 | 1987-07-01 | Magneto-optical recording and reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16416387A JPS6410447A (en) | 1987-07-01 | 1987-07-01 | Magneto-optical recording and reproducing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6410447A true JPS6410447A (en) | 1989-01-13 |
Family
ID=15787925
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16416387A Pending JPS6410447A (en) | 1987-07-01 | 1987-07-01 | Magneto-optical recording and reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6410447A (en) |
-
1987
- 1987-07-01 JP JP16416387A patent/JPS6410447A/en active Pending
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