JPS57135425A - Tracking control system - Google Patents

Tracking control system

Info

Publication number
JPS57135425A
JPS57135425A JP56019689A JP1968981A JPS57135425A JP S57135425 A JPS57135425 A JP S57135425A JP 56019689 A JP56019689 A JP 56019689A JP 1968981 A JP1968981 A JP 1968981A JP S57135425 A JPS57135425 A JP S57135425A
Authority
JP
Japan
Prior art keywords
fields
stored
frame portion
heads
data
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
JP56019689A
Other languages
Japanese (ja)
Other versions
JPS6321966B2 (en
Inventor
Masahiko Tsuruta
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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor KK
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 Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP56019689A priority Critical patent/JPS57135425A/en
Priority to US06/347,395 priority patent/US4470079A/en
Priority to FR8202331A priority patent/FR2500243B1/fr
Priority to KR8200660A priority patent/KR880000396B1/en
Priority to DE19823205278 priority patent/DE3205278A1/en
Priority to GB8204425A priority patent/GB2096801B/en
Publication of JPS57135425A publication Critical patent/JPS57135425A/en
Publication of JPS6321966B2 publication Critical patent/JPS6321966B2/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
    • 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

Landscapes

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

Abstract

PURPOSE:To exactly detect a track shift, by executing the control by making track scanning of a 2N frame portion a unit, in case when a rotary head scans an N frame portion and reproduced it as a signal of 1 frame portion. CONSTITUTION:Sampling data of each N pieces of reproducing FM video signals of the first and second fields by rotary heads 17, 18 which have been shifted, for instance, in the upper direction are stored in a memory 9. In case the third and fourth fields are reproduced, the heads 17, 18 are shifted in the lower direction, and the data are stored in the same way. In a voltage comparator 10, data of the thrid and first fields and the fourth and second fields are compared. An output signal of the comparator 10 is stored as a track shift detecting signal in a memory 11, and after that, is supplied to a tracking signal generating circuit 12, in which it is converted to a track shift correcting tracking signal corresponding to each scanning position of the heads 17, 18, and after that, is supplied to an adding circuit 13.
JP56019689A 1981-02-13 1981-02-13 Tracking control system Granted JPS57135425A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP56019689A JPS57135425A (en) 1981-02-13 1981-02-13 Tracking control system
US06/347,395 US4470079A (en) 1981-02-13 1982-02-10 Tracking control system in a magnetic recording and reproducing apparatus
FR8202331A FR2500243B1 (en) 1981-02-13 1982-02-12
KR8200660A KR880000396B1 (en) 1981-02-13 1982-02-13 Tracking control system
DE19823205278 DE3205278A1 (en) 1981-02-13 1982-02-15 TRACK CONTROL ARRANGEMENT FOR A MAGNETIC RECORDING AND PLAYBACK DEVICE
GB8204425A GB2096801B (en) 1981-02-13 1982-02-15 Tracking control system in a magnetic recording and reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56019689A JPS57135425A (en) 1981-02-13 1981-02-13 Tracking control system

Publications (2)

Publication Number Publication Date
JPS57135425A true JPS57135425A (en) 1982-08-21
JPS6321966B2 JPS6321966B2 (en) 1988-05-10

Family

ID=12006205

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56019689A Granted JPS57135425A (en) 1981-02-13 1981-02-13 Tracking control system

Country Status (2)

Country Link
JP (1) JPS57135425A (en)
KR (1) KR880000396B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6242681A (en) * 1985-08-20 1987-02-24 Matsushita Electric Ind Co Ltd Tracking control method for magnetic recording and reproducing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6242681A (en) * 1985-08-20 1987-02-24 Matsushita Electric Ind Co Ltd Tracking control method for magnetic recording and reproducing device

Also Published As

Publication number Publication date
KR880000396B1 (en) 1988-03-21
KR830009563A (en) 1983-12-22
JPS6321966B2 (en) 1988-05-10

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