JPS5766526A - Automatic tracking device - Google Patents

Automatic tracking device

Info

Publication number
JPS5766526A
JPS5766526A JP55141209A JP14120980A JPS5766526A JP S5766526 A JPS5766526 A JP S5766526A JP 55141209 A JP55141209 A JP 55141209A JP 14120980 A JP14120980 A JP 14120980A JP S5766526 A JPS5766526 A JP S5766526A
Authority
JP
Japan
Prior art keywords
circuit
sample
signal
head
playback head
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
JP55141209A
Other languages
Japanese (ja)
Other versions
JPS6363966B2 (en
Inventor
Masahiro Honjo
Masao Tomita
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 JP55141209A priority Critical patent/JPS5766526A/en
Priority to US06/309,497 priority patent/US4451860A/en
Priority to EP81304712A priority patent/EP0050024B1/en
Priority to DE8181304712T priority patent/DE3173644D1/en
Publication of JPS5766526A publication Critical patent/JPS5766526A/en
Publication of JPS6363966B2 publication Critical patent/JPS6363966B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/584—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes
    • G11B5/588—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes by controlling the position of the rotating heads
    • G11B5/592—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes by controlling the position of the rotating heads using bimorph elements supporting the heads

Landscapes

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

Abstract

PURPOSE:To reduce the deterioration of picture quality by obtaininig excellent tracking by detecting the shift of a playback head from a recording track automatically, and by holding the scanning track of the playback head and the recording track in parallel at all times. CONSTITUTION:An RF signal obtained by the playback head of a VTR8 is supplied to sample holding circuits 10 and 11 through a detecting circuit 9. The sample holding circuit 10 and 11 sample some section in one field of the RF signal by the same head alternately by receiving sample pulses S1 and S2 from a sample pulse generating circuit 15, and their outputs are compared mutually by a comparing circuit 12. On receiving the output S5 of the comparing circuit 12 and a signal from a sample pulse generating circuit 15, the control circuit 13 performs arithmetic processing to send a control signal to a step voltage generating circuit 14. An applied voltage E is sent from the circuit 14 to a head driving element. Consequently, excellent tracking is achieved and the deterioration of picture quality is reduced.
JP55141209A 1980-10-09 1980-10-09 Automatic tracking device Granted JPS5766526A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP55141209A JPS5766526A (en) 1980-10-09 1980-10-09 Automatic tracking device
US06/309,497 US4451860A (en) 1980-10-09 1981-10-06 Tracking-error correcting system in a video reproducing apparatus
EP81304712A EP0050024B1 (en) 1980-10-09 1981-10-09 Tracking-error correcting system in video reproducing apparatus
DE8181304712T DE3173644D1 (en) 1980-10-09 1981-10-09 Tracking-error correcting system in video reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55141209A JPS5766526A (en) 1980-10-09 1980-10-09 Automatic tracking device

Publications (2)

Publication Number Publication Date
JPS5766526A true JPS5766526A (en) 1982-04-22
JPS6363966B2 JPS6363966B2 (en) 1988-12-09

Family

ID=15286671

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55141209A Granted JPS5766526A (en) 1980-10-09 1980-10-09 Automatic tracking device

Country Status (1)

Country Link
JP (1) JPS5766526A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6070512A (en) * 1983-09-28 1985-04-22 Canon Inc Tracking device
JPS60106021A (en) * 1983-11-11 1985-06-11 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device
JPS6488913A (en) * 1987-09-29 1989-04-03 Mitsubishi Electric Corp Tracking device
JPS6489675A (en) * 1987-09-29 1989-04-04 Mitsubishi Electric Corp Tracking device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6070512A (en) * 1983-09-28 1985-04-22 Canon Inc Tracking device
JPS60106021A (en) * 1983-11-11 1985-06-11 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device
JPS6488913A (en) * 1987-09-29 1989-04-03 Mitsubishi Electric Corp Tracking device
JPS6489675A (en) * 1987-09-29 1989-04-04 Mitsubishi Electric Corp Tracking device

Also Published As

Publication number Publication date
JPS6363966B2 (en) 1988-12-09

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