JPS647339A - Tracking controller - Google Patents
Tracking controllerInfo
- Publication number
- JPS647339A JPS647339A JP16280287A JP16280287A JPS647339A JP S647339 A JPS647339 A JP S647339A JP 16280287 A JP16280287 A JP 16280287A JP 16280287 A JP16280287 A JP 16280287A JP S647339 A JPS647339 A JP S647339A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- external disturbance
- tracking
- storage operation
- 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)
Abstract
PURPOSE:To make the tracking performance stable by detecting it when an external disturbance not synchronously with a rotation so as to stop or inhibit the waveform storing operation for correcting eccentricity. CONSTITUTION:An acceleration detector 18 fitted onto a frame of a device supporting a disk motor 6 or the like detects the acceleration of the disk 7 in a radial direction, that is, externally in a tracking direction to which a control element 17 is moved. The detection signal is given to a level detection circuit 20 via a level amplifier 19. The circuit 20 sends a signal informing that an impact or vibration is exerted to the device and an external disturbance to the tracking control system to increase the amplitude of the signal to a differential amplifier 10 takes place to a microcomputer 15. When an external disturbance signal is sent, the computer 15 does not send a signal commanding the storage operation to the waveform storage circuit 16. Moreover, when the circuit 16 is in storage operation, the command signal to stop the storage operation is sent. Thus, the tracking performance is made stable.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62162802A JP2590889B2 (en) | 1987-06-30 | 1987-06-30 | Tracking control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62162802A JP2590889B2 (en) | 1987-06-30 | 1987-06-30 | Tracking control device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS647339A true JPS647339A (en) | 1989-01-11 |
JP2590889B2 JP2590889B2 (en) | 1997-03-12 |
Family
ID=15761492
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62162802A Expired - Lifetime JP2590889B2 (en) | 1987-06-30 | 1987-06-30 | Tracking control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2590889B2 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57143765A (en) * | 1981-03-02 | 1982-09-06 | Sony Corp | Disc reproducing device |
JPS5994248A (en) * | 1982-11-19 | 1984-05-30 | Sony Corp | Servo control circuit of information reproducer |
JPS62140250A (en) * | 1985-12-13 | 1987-06-23 | Toshiba Corp | Optical disk device |
-
1987
- 1987-06-30 JP JP62162802A patent/JP2590889B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57143765A (en) * | 1981-03-02 | 1982-09-06 | Sony Corp | Disc reproducing device |
JPS5994248A (en) * | 1982-11-19 | 1984-05-30 | Sony Corp | Servo control circuit of information reproducer |
JPS62140250A (en) * | 1985-12-13 | 1987-06-23 | Toshiba Corp | Optical disk device |
Also Published As
Publication number | Publication date |
---|---|
JP2590889B2 (en) | 1997-03-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071219 Year of fee payment: 11 |