JPS5674838A - Optical disk recorder - Google Patents
Optical disk recorderInfo
- Publication number
- JPS5674838A JPS5674838A JP15144879A JP15144879A JPS5674838A JP S5674838 A JPS5674838 A JP S5674838A JP 15144879 A JP15144879 A JP 15144879A JP 15144879 A JP15144879 A JP 15144879A JP S5674838 A JPS5674838 A JP S5674838A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- track number
- demodulator
- tracks
- reading
- 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
Abstract
PURPOSE: To eliminate virtually the time delay in the reading, by dividing the area on the optical disk into about 1,000sec and then securing the recording of the track number on each sector.
CONSTITUTION: A piling is secured through piling part 14 between the FM-modulated record information signal 9 and the track number repeat signal 10 having the frequency component lower enough than the signal 9. These piled signals are then turned into the pulse signal 12 through pulse forming circuit 15, and then the laser beam is modulated by the optical modulator 16 to be recorded by the writing head 17 and in the form of the bit 13. At the same time, the electric signal during the reading is supplied to the demodulator 24 via the low-pass filter 22, and the track number information is detected in about 1,000 times during a turn of the disk along with demodulation of the record information signal through the demodulator 25. As a result, the time delay can be virtually eliminated when one is selected among about 50 tracks which are decided most by a mechanical means when the positioning is given to the tracks.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15144879A JPS5674838A (en) | 1979-11-22 | 1979-11-22 | Optical disk recorder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15144879A JPS5674838A (en) | 1979-11-22 | 1979-11-22 | Optical disk recorder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5674838A true JPS5674838A (en) | 1981-06-20 |
Family
ID=15518812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15144879A Pending JPS5674838A (en) | 1979-11-22 | 1979-11-22 | Optical disk recorder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5674838A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58147875A (en) * | 1982-02-26 | 1983-09-02 | Akai Electric Co Ltd | Address signal reading circuit |
-
1979
- 1979-11-22 JP JP15144879A patent/JPS5674838A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58147875A (en) * | 1982-02-26 | 1983-09-02 | Akai Electric Co Ltd | Address signal reading circuit |
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