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

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