JPS55118184A - Optical recording device - Google Patents
Optical recording deviceInfo
- Publication number
- JPS55118184A JPS55118184A JP2553079A JP2553079A JPS55118184A JP S55118184 A JPS55118184 A JP S55118184A JP 2553079 A JP2553079 A JP 2553079A JP 2553079 A JP2553079 A JP 2553079A JP S55118184 A JPS55118184 A JP S55118184A
- Authority
- JP
- Japan
- Prior art keywords
- record signal
- rise
- fall
- correction
- signal
- 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
Abstract
PURPOSE: To obtain the accurate reproduction data by giving the correction to both the rise and fall timing of the record signal and thus eliminating the extension component of the spot which is caused by the thickness of the light beam.
CONSTITUTION: Record signal 25 is supplied to rise and fall phase correction circuits 7 and 8 within correction circuit 11. Mixer circuit 9 mixes up the output of circuits 7 and 8, and then gives the phase delay and the phase gain to the rise and the fall respectively to deliver record signal 24. Optical modulator 2 keeps output beam 21 at a high level for the high-level period of correcting record signal 24 and also keeps the output beam at a low level for the low-level period of signal 24 respectively.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2553079A JPS55118184A (en) | 1979-03-07 | 1979-03-07 | Optical recording device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2553079A JPS55118184A (en) | 1979-03-07 | 1979-03-07 | Optical recording device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55118184A true JPS55118184A (en) | 1980-09-10 |
JPS6131507B2 JPS6131507B2 (en) | 1986-07-21 |
Family
ID=12168582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2553079A Granted JPS55118184A (en) | 1979-03-07 | 1979-03-07 | Optical recording device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55118184A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62185250A (en) * | 1986-02-10 | 1987-08-13 | Ricoh Co Ltd | Pit recording method by light irradiation |
JPH02122436A (en) * | 1988-10-31 | 1990-05-10 | Nec Corp | Optical recording and reproducing device |
JPH02122434A (en) * | 1988-10-31 | 1990-05-10 | Nec Corp | Optical recording and reproducing device |
JPH0431420U (en) * | 1990-06-29 | 1992-03-13 |
-
1979
- 1979-03-07 JP JP2553079A patent/JPS55118184A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62185250A (en) * | 1986-02-10 | 1987-08-13 | Ricoh Co Ltd | Pit recording method by light irradiation |
JPH02122436A (en) * | 1988-10-31 | 1990-05-10 | Nec Corp | Optical recording and reproducing device |
JPH02122434A (en) * | 1988-10-31 | 1990-05-10 | Nec Corp | Optical recording and reproducing device |
JPH0431420U (en) * | 1990-06-29 | 1992-03-13 |
Also Published As
Publication number | Publication date |
---|---|
JPS6131507B2 (en) | 1986-07-21 |
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