JPS6466876A - Disk reproducing device - Google Patents
Disk reproducing deviceInfo
- Publication number
- JPS6466876A JPS6466876A JP22436387A JP22436387A JPS6466876A JP S6466876 A JPS6466876 A JP S6466876A JP 22436387 A JP22436387 A JP 22436387A JP 22436387 A JP22436387 A JP 22436387A JP S6466876 A JPS6466876 A JP S6466876A
- Authority
- JP
- Japan
- Prior art keywords
- gain
- deviation
- vibration
- error signal
- read
- 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
- Moving Of The Head To Find And Align With The Track (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE:To prevent the malfunction due to a flaw or a stain, etc., on a disk surface and the malfunction due to a vibration by detecting the deviation in the read position of a read means from an optimum position and changing the gain of an amplifying means in accordance with the size of an error signal corresponding to said deviation. CONSTITUTION:The gain of the amplifying means 8 is changed in accordance with the size of the error signal TE corresponding to the read position of read means 1, 2 and 3, and in case of the normal state of nonvibration, the error signal TE is minimized, and hence the gain of the amplifying means is set low so that its sensitivity is lowered. Consequently, the malfunction due to a flaw or a stain, etc., on the disk surface will never arise. And, in case of the occurrence of a vibration, the error signal TE is enlarged, and hence the gain of the amplifying means 8 is set high so that the sensitivity is promoted, thus correcting quickly the deviation in the read position due to the vibration. By this method, the deviation in a beam position due to the vibration is quickly corrected, and moreover a disk reproducing device capable of operating without the malfunction due to a flaw or a stain, etc., on a disk surface is hence obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22436387A JPS6466876A (en) | 1987-09-07 | 1987-09-07 | Disk reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22436387A JPS6466876A (en) | 1987-09-07 | 1987-09-07 | Disk reproducing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6466876A true JPS6466876A (en) | 1989-03-13 |
Family
ID=16812586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22436387A Pending JPS6466876A (en) | 1987-09-07 | 1987-09-07 | Disk reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6466876A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0454025U (en) * | 1990-09-04 | 1992-05-08 |
-
1987
- 1987-09-07 JP JP22436387A patent/JPS6466876A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0454025U (en) * | 1990-09-04 | 1992-05-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ATE123170T1 (en) | AUTOMATIC SERVO GAIN CALIBRATION SYSTEM FOR DISK MEMORY. | |
US4722079A (en) | Optical disk player capable of distinguishing external disturbances and local defects and adjusting servo gain accordingly | |
JPS5746357A (en) | Tracking servo circuit | |
JPS6479942A (en) | Information processor | |
JPS6466876A (en) | Disk reproducing device | |
MY104528A (en) | Optical disc servo apparatus. | |
JPS5398802A (en) | Optical reproducer | |
JPS6446237A (en) | Optical information recording and reproducing device | |
JPS55154415A (en) | Incidental phenomenon recorder | |
CA2031565A1 (en) | Optical disc apparatus | |
JPS6460826A (en) | Optical disk recording and reproducing device | |
JPS6448276A (en) | Servo track writing device | |
EP0324859A4 (en) | Error signal generator circuit | |
JPS6425356A (en) | Agc gain control circuit for optical recording and reproducing device | |
JPS5764342A (en) | Optical system recorder and reproducer | |
JPS6430030A (en) | Optical disk device | |
JPS6459642A (en) | Autotracking controller | |
JPS6457425A (en) | Optical disk | |
JPS53100202A (en) | Optical reproducer | |
JPS5654617A (en) | Automatic gain control system | |
JPS57120209A (en) | Setting device for optimum operation characteristics of magnetic recorder and reproducer | |
JPS6486385A (en) | Track jump preventing device for cd player | |
JPS56153528A (en) | Detector for height of head in magnetic recorder and reproducer | |
JPS6464110A (en) | Magnetic recorder | |
JPS5641538A (en) | Tracking control circuit of optical disk memory unit |