JPS57143720A - Tracking control system - Google Patents

Tracking control system

Info

Publication number
JPS57143720A
JPS57143720A JP56027838A JP2783881A JPS57143720A JP S57143720 A JPS57143720 A JP S57143720A JP 56027838 A JP56027838 A JP 56027838A JP 2783881 A JP2783881 A JP 2783881A JP S57143720 A JPS57143720 A JP S57143720A
Authority
JP
Japan
Prior art keywords
head
tracking control
circuit
sampling
signal
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
JP56027838A
Other languages
Japanese (ja)
Other versions
JPS6321967B2 (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 JP56027838A priority Critical patent/JPS57143720A/en
Priority to US06/347,395 priority patent/US4470079A/en
Priority to FR8202331A priority patent/FR2500243B1/fr
Priority to GB8204425A priority patent/GB2096801B/en
Priority to DE19823205278 priority patent/DE3205278A1/en
Publication of JPS57143720A publication Critical patent/JPS57143720A/en
Publication of JPS6321967B2 publication Critical patent/JPS6321967B2/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

Abstract

PURPOSE:To execute a tracking control exactly, by moving up and down a rotary head by one frame unit in the track width direction, comparing plural sampling data of a reproducing signal in case of a state shifted in each direction, and detecting a track shift. CONSTITUTION:An FM video signal 3 is supplied to a sampling circuit 6 through an envelope detecting circuit 5. The sampling circuit 6 samples a video signal level of N parts of one recording track and provides it to a memory 9 by a sampling pulse from a pulse generator 7 by a drum pulse 4. On the other hand, the pulse generator 72 sends a head rocking signal of 2 field period to a head moving mechanism 15 through an adding circuit 13 and a head moving driving amplifier 14, and rocks the head in the width direction. Storage values of sampling data of the upper and lower displacement positions are compared by a voltage comparator 10, and its track shift detecting signal is sent to a tracking control voltage generating circuit 12 through a memory 11. In this way, the tracking control is executed exactly.
JP56027838A 1981-02-13 1981-02-27 Tracking control system Granted JPS57143720A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP56027838A JPS57143720A (en) 1981-02-27 1981-02-27 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
GB8204425A GB2096801B (en) 1981-02-13 1982-02-15 Tracking control system in a magnetic recording and reproducing apparatus
DE19823205278 DE3205278A1 (en) 1981-02-13 1982-02-15 TRACK CONTROL ARRANGEMENT FOR A MAGNETIC RECORDING AND PLAYBACK DEVICE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56027838A JPS57143720A (en) 1981-02-27 1981-02-27 Tracking control system

Publications (2)

Publication Number Publication Date
JPS57143720A true JPS57143720A (en) 1982-09-06
JPS6321967B2 JPS6321967B2 (en) 1988-05-10

Family

ID=12232066

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56027838A Granted JPS57143720A (en) 1981-02-13 1981-02-27 Tracking control system

Country Status (1)

Country Link
JP (1) JPS57143720A (en)

Also Published As

Publication number Publication date
JPS6321967B2 (en) 1988-05-10

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