JPS6452263A - Write correcting circuit - Google Patents
Write correcting circuitInfo
- Publication number
- JPS6452263A JPS6452263A JP20951087A JP20951087A JPS6452263A JP S6452263 A JPS6452263 A JP S6452263A JP 20951087 A JP20951087 A JP 20951087A JP 20951087 A JP20951087 A JP 20951087A JP S6452263 A JPS6452263 A JP S6452263A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- output
- circuit
- pulse
- recording
- 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
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE:To improve the recording and reproducing characteristic on the entire face of an optical disk by giving an output signal from a position sensor to a single pulse generating circuit via a D/A converter and a voltage current conversion circuit so as to generate a write correction pulse. CONSTITUTION:A head position sensor 14 detects an optical head 13 on a disk in its radial direction to output a digital signal. The output signal is converted into an analog signal by a D/A converter 15 and its output voltage is converted into a current by a voltage current conversion circuit 21 and fed to a single pulse generating circuit 16. The circuit 16 controls the pulse time width depending on the input current to give a signal to a gate circuit 18 and the signal is combined with the recording signal from an information signal source 20. Then the output pulse is given to a laser drive circuit 19 to form a laser pulse. Thus, it is possible to apply required and sufficient write correction on the entire face of the optical disk to improve the recording and reproducing characteristic.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20951087A JPS6452263A (en) | 1987-08-24 | 1987-08-24 | Write correcting circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20951087A JPS6452263A (en) | 1987-08-24 | 1987-08-24 | Write correcting circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6452263A true JPS6452263A (en) | 1989-02-28 |
Family
ID=16573992
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20951087A Pending JPS6452263A (en) | 1987-08-24 | 1987-08-24 | Write correcting circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6452263A (en) |
-
1987
- 1987-08-24 JP JP20951087A patent/JPS6452263A/en active Pending
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