JPS6457425A - Optical disk - Google Patents
Optical diskInfo
- Publication number
- JPS6457425A JPS6457425A JP62215685A JP21568587A JPS6457425A JP S6457425 A JPS6457425 A JP S6457425A JP 62215685 A JP62215685 A JP 62215685A JP 21568587 A JP21568587 A JP 21568587A JP S6457425 A JPS6457425 A JP S6457425A
- Authority
- JP
- Japan
- Prior art keywords
- track
- crosstalk
- disk
- tracks
- 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
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
PURPOSE:To eliminate the danger to cause malfunction and to attain the stable tilt correction by recording a constant pattern in a sample shape on a disk track, and detecting a crosstalk signal level from an adjoining track. CONSTITUTION:On a disk 5, tracks ABC including an intermittent pattern 4 for detecting a tilt exists, an optical beam is focused onto the track A on a disk and the reflected optical beam is made incident on a detector 7. By the detector 7, besides this, the signal by a crosstalk from the track B and the track C is reproduced. The signal due to the crosstalk from the tracks B and C is amplified by an amplifying circuit 8, converted to the output in accordance with the signal level reproduced from respective tracks with a frequency discriminating circuit 9 and a servo action is executed so that a crosstalk quantity from the track B and the crosstalk quantity from the track A can be equal. Thus, the generation of malfunction is eliminated and a stable tilt correction can be executed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62215685A JP2650267B2 (en) | 1987-08-28 | 1987-08-28 | optical disk |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62215685A JP2650267B2 (en) | 1987-08-28 | 1987-08-28 | optical disk |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6102608A Division JP2626550B2 (en) | 1994-05-17 | 1994-05-17 | Optical disk drive |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6457425A true JPS6457425A (en) | 1989-03-03 |
JP2650267B2 JP2650267B2 (en) | 1997-09-03 |
Family
ID=16676462
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62215685A Expired - Lifetime JP2650267B2 (en) | 1987-08-28 | 1987-08-28 | optical disk |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2650267B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0489661A (en) * | 1990-07-26 | 1992-03-23 | Matsushita Electric Ind Co Ltd | Signal recording and reproducing device |
EP0492889A2 (en) * | 1990-12-18 | 1992-07-01 | Pioneer Electronic Corporation | Crosstalk quantity detector |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5952341A (en) * | 1982-09-16 | 1984-03-26 | Mitsubishi Electric Corp | Data coding system |
JPS5968814A (en) * | 1982-10-12 | 1984-04-18 | Fuji Photo Film Co Ltd | Tracking servo system in reproducing system of video signal |
JPS60177448A (en) * | 1984-02-22 | 1985-09-11 | Toshiba Corp | Disk for signal adjusting |
JPS61120323A (en) * | 1984-11-14 | 1986-06-07 | Sony Corp | Recording system of digital signal |
JPS61126635A (en) * | 1984-11-21 | 1986-06-14 | Nec Home Electronics Ltd | Optical memory disc |
JPS61214681A (en) * | 1985-03-20 | 1986-09-24 | Sony Corp | Terminal equipment for video tex with japanese language sentence generating means |
JPS6453361A (en) * | 1987-08-24 | 1989-03-01 | Nikon Corp | Disk medium |
-
1987
- 1987-08-28 JP JP62215685A patent/JP2650267B2/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5952341A (en) * | 1982-09-16 | 1984-03-26 | Mitsubishi Electric Corp | Data coding system |
JPS5968814A (en) * | 1982-10-12 | 1984-04-18 | Fuji Photo Film Co Ltd | Tracking servo system in reproducing system of video signal |
JPS60177448A (en) * | 1984-02-22 | 1985-09-11 | Toshiba Corp | Disk for signal adjusting |
JPS61120323A (en) * | 1984-11-14 | 1986-06-07 | Sony Corp | Recording system of digital signal |
JPS61126635A (en) * | 1984-11-21 | 1986-06-14 | Nec Home Electronics Ltd | Optical memory disc |
JPS61214681A (en) * | 1985-03-20 | 1986-09-24 | Sony Corp | Terminal equipment for video tex with japanese language sentence generating means |
JPS6453361A (en) * | 1987-08-24 | 1989-03-01 | Nikon Corp | Disk medium |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0489661A (en) * | 1990-07-26 | 1992-03-23 | Matsushita Electric Ind Co Ltd | Signal recording and reproducing device |
EP0492889A2 (en) * | 1990-12-18 | 1992-07-01 | Pioneer Electronic Corporation | Crosstalk quantity detector |
Also Published As
Publication number | Publication date |
---|---|
JP2650267B2 (en) | 1997-09-03 |
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