JPS647339A - Tracking controller - Google Patents

Tracking controller

Info

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
Application number
JP16280287A
Other languages
Japanese (ja)
Other versions
JP2590889B2 (en
Inventor
Katsuya Watanabe
Masayuki Shibano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP62162802A priority Critical patent/JP2590889B2/en
Publication of JPS647339A publication Critical patent/JPS647339A/en
Application granted granted Critical
Publication of JP2590889B2 publication Critical patent/JP2590889B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.
JP62162802A 1987-06-30 1987-06-30 Tracking control device Expired - Lifetime JP2590889B2 (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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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