JPS57123525A - Tracking error detection system - Google Patents

Tracking error detection system

Info

Publication number
JPS57123525A
JPS57123525A JP56007729A JP772981A JPS57123525A JP S57123525 A JPS57123525 A JP S57123525A JP 56007729 A JP56007729 A JP 56007729A JP 772981 A JP772981 A JP 772981A JP S57123525 A JPS57123525 A JP S57123525A
Authority
JP
Japan
Prior art keywords
signal
pilot signals
tracking error
passed
supplied
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
Application number
JP56007729A
Other languages
Japanese (ja)
Inventor
Kanji Kubo
Hiroshi Taniguchi
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 JP56007729A priority Critical patent/JPS57123525A/en
Publication of JPS57123525A publication Critical patent/JPS57123525A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following

Landscapes

  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Abstract

PURPOSE:To obtain a tracking error signal with simple constitution by recording pilot signals, differing in frequency, on a video signal frame by frame alternately, and by comparing the level of the beat signal of their reproduced signals with a reference voltage. CONSTITUTION:A 3.58MHz signal is supplied to terminal, and pilot signals with frequencies f1 and f2 are supplied to a switch SW1 through frequency dividers 18 and 19. The switch SW1 is changed over in every half period through an FF21 receiving a head switch signal through a terminal 20. The pilot signals are passed through a BPF22 and synthesized with a color signal 23 passed through an HPF24 and an Y-FM signal 25 to generate an output 26. A color signal 27 is supplied to a BPF28, a detecting circuit 31, and a BPF23 to extract the beat signal of the pilot signals, which is passed through a detecting circuit 33 and a gate circuit 35 to obtain a signal during the contact period of a head. The output is compared by a comparator 37 to input its difference signal to a driving circuit 39. Thus, a tracking error signal is obtained by the simple constitution.
JP56007729A 1981-01-20 1981-01-20 Tracking error detection system Pending JPS57123525A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56007729A JPS57123525A (en) 1981-01-20 1981-01-20 Tracking error detection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56007729A JPS57123525A (en) 1981-01-20 1981-01-20 Tracking error detection system

Publications (1)

Publication Number Publication Date
JPS57123525A true JPS57123525A (en) 1982-08-02

Family

ID=11673794

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56007729A Pending JPS57123525A (en) 1981-01-20 1981-01-20 Tracking error detection system

Country Status (1)

Country Link
JP (1) JPS57123525A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60246049A (en) * 1984-05-21 1985-12-05 Mitsubishi Electric Corp Magnetic recording and reproducing device
US6057977A (en) * 1997-08-07 2000-05-02 International Business Machines Corporation Compact servo pattern optimized for M-R heads

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60246049A (en) * 1984-05-21 1985-12-05 Mitsubishi Electric Corp Magnetic recording and reproducing device
US6057977A (en) * 1997-08-07 2000-05-02 International Business Machines Corporation Compact servo pattern optimized for M-R heads
US6760184B1 (en) 1997-08-07 2004-07-06 Hitachi Global Storage Technologies Compact servo pattern optimized for M-R heads

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