JPS6446385A - Tracking controller in information reader - Google Patents

Tracking controller in information reader

Info

Publication number
JPS6446385A
JPS6446385A JP63192453A JP19245388A JPS6446385A JP S6446385 A JPS6446385 A JP S6446385A JP 63192453 A JP63192453 A JP 63192453A JP 19245388 A JP19245388 A JP 19245388A JP S6446385 A JPS6446385 A JP S6446385A
Authority
JP
Japan
Prior art keywords
servo loop
signal
pickup
opening
circuit
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
JP63192453A
Other languages
Japanese (ja)
Other versions
JPH031875B2 (en
Inventor
Takashi Okano
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.)
Pioneer Video Corp
Pioneer Corp
Original Assignee
Pioneer Video Corp
Pioneer Electronic Corp
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 Pioneer Video Corp, Pioneer Electronic Corp filed Critical Pioneer Video Corp
Priority to JP63192453A priority Critical patent/JPS6446385A/en
Publication of JPS6446385A publication Critical patent/JPS6446385A/en
Publication of JPH031875B2 publication Critical patent/JPH031875B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE:To execute a stable jumping operation and an exact tracking by holding an error signal just preceding to the opening of a switching means and impressing it to a driving means. CONSTITUTION:A low frequency area equalizer 9, which is a signal holding means, is provided in the rear step of a switching circuit 8 to execute the opening/closing of a servo loop. At a time point to open the servo loop, the error signal just preceding to the opening of the servo loop is supplied from the signal holding means 9 to a pickup driving means together with an accelerating signal. Then the pickup means is accelerated and the signal holding means 9 is operated even as a circuit for characteristic compensation of a phase compensating circuit, etc., in the servo loop. Thus, the track jumping operation of the pickup means can be stably and securely executed with the simple constitution and the converging of the information reading point of the pickup means can be speedily executed to the track after the jumping.
JP63192453A 1988-08-01 1988-08-01 Tracking controller in information reader Granted JPS6446385A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63192453A JPS6446385A (en) 1988-08-01 1988-08-01 Tracking controller in information reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63192453A JPS6446385A (en) 1988-08-01 1988-08-01 Tracking controller in information reader

Publications (2)

Publication Number Publication Date
JPS6446385A true JPS6446385A (en) 1989-02-20
JPH031875B2 JPH031875B2 (en) 1991-01-11

Family

ID=16291553

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63192453A Granted JPS6446385A (en) 1988-08-01 1988-08-01 Tracking controller in information reader

Country Status (1)

Country Link
JP (1) JPS6446385A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5226802A (en) * 1975-08-21 1977-02-28 Philips Nv Device for reading diskklike recording carrier

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5226802A (en) * 1975-08-21 1977-02-28 Philips Nv Device for reading diskklike recording carrier

Also Published As

Publication number Publication date
JPH031875B2 (en) 1991-01-11

Similar Documents

Publication Publication Date Title
JPS5658141A (en) Tracking servo read-in device for information reader
US4817073A (en) Tracking servo system for an information recording disc player
JPS6460879A (en) Scanning method in disk player
JPS6457426A (en) Track servo control system for optical disk device
US6236032B1 (en) Tracking pull-in circuit for reducing effect by a defect in a tracking servo loop
US6208597B1 (en) Transfer control system of information read beam
JPH02198036A (en) Moving direction detector for optical spot in optical information recording and/or reproducing device
JPS57120275A (en) Tracking servo lead-in system of recorded information reader
JPS6446385A (en) Tracking controller in information reader
JPS6448226A (en) Optical disk device
JPS5599889A (en) Tracking control unit in information reader
JPS5658140A (en) Tracking servo device for information reader
JPS56157182A (en) Tracking system
JPH02105336A (en) Tracking servo device
FR2407505A1 (en) MOUNTING TO REDUCE THE SYNCHRONIZATION TIME IN PHASE OF A PHASE REGULATION CIRCUIT ON THE PHASE POSITION OF INPUT SIGNALS
MY116645A (en) Improved optical disc tracking control
KR100188097B1 (en) Break circuit of compact disc player for improving ability of track jump
JPS6457427A (en) Focus servo control system for optical disk device
EP0158245A2 (en) Skip circuit for recorded information reproducing unit
JPS6212971A (en) Information recording disk reproducing device
JPS5625272A (en) Rotary phase modification system of vtr
JPS6478439A (en) Optical information recording and reproducing device
JP2628623B2 (en) Tracking servo device
KR970050311A (en) Tracking Servo Control Circuit of Optical Disc Player
JPS6419538A (en) Circuit for correcting eccentricity of optical disk