JPS57109126A - Detecting system for track shift - Google Patents

Detecting system for track shift

Info

Publication number
JPS57109126A
JPS57109126A JP55183994A JP18399480A JPS57109126A JP S57109126 A JPS57109126 A JP S57109126A JP 55183994 A JP55183994 A JP 55183994A JP 18399480 A JP18399480 A JP 18399480A JP S57109126 A JPS57109126 A JP S57109126A
Authority
JP
Japan
Prior art keywords
signal
track
track shift
pilot signals
playback
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
JP55183994A
Other languages
Japanese (ja)
Other versions
JPS6321976B2 (en
Inventor
Seisuke Hirakuri
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 JP55183994A priority Critical patent/JPS57109126A/en
Publication of JPS57109126A publication Critical patent/JPS57109126A/en
Publication of JPS6321976B2 publication Critical patent/JPS6321976B2/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

Landscapes

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

Abstract

PURPOSE:To accurately detect the amplitude and direction of track shift, by recording a plurality of pilot signals with different frequencies at each track on a main information signal superimposingly, and detecting the pilot signals at playback at variable band filters. CONSTITUTION:Pilot signals with different frequencies are recorded at each track by superimposing with video signals on a magnetic tape. A playback signal from a playback head 19 is given to a preamplifier 20 and an FM demodulation circuit 21 and a video signal is demodulated 22. On the other hand, the demodulation signal is applied to a horizontal synchronizing signal separating circuit 23, and the separated horizontal synchronizing signal is applied to phase comparators 24a, 24b. When a control signal is applied to frequency dividers 27a, 27b constituting a PLL from a control circuit 30, a clock signal with different frequency is applied to variable band filters 31, 32 from voltage controlled oscillators 26a, 26b. The output is applied to level detectors 33, 34 and a differential amplifier 35 to output 36 a track shift detecting voltage. Thus, the amplitude and direction of track shift can be detected accurately.
JP55183994A 1980-12-26 1980-12-26 Detecting system for track shift Granted JPS57109126A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55183994A JPS57109126A (en) 1980-12-26 1980-12-26 Detecting system for track shift

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55183994A JPS57109126A (en) 1980-12-26 1980-12-26 Detecting system for track shift

Publications (2)

Publication Number Publication Date
JPS57109126A true JPS57109126A (en) 1982-07-07
JPS6321976B2 JPS6321976B2 (en) 1988-05-10

Family

ID=16145453

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55183994A Granted JPS57109126A (en) 1980-12-26 1980-12-26 Detecting system for track shift

Country Status (1)

Country Link
JP (1) JPS57109126A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5937785A (en) * 1982-08-27 1984-03-01 Hitachi Ltd Magnetic video recording and reproducing device
US5016120A (en) * 1985-03-28 1991-05-14 Sony Corporation Apparatus for recording and reproducing a digitized audio signal on a magnetic tape which has a slant track format including means for detecting a control signal to identify a digitized audio signal on the slant track

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0352758U (en) * 1989-09-29 1991-05-22

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5937785A (en) * 1982-08-27 1984-03-01 Hitachi Ltd Magnetic video recording and reproducing device
JPH0233235B2 (en) * 1982-08-27 1990-07-26 Hitachi Ltd
US5016120A (en) * 1985-03-28 1991-05-14 Sony Corporation Apparatus for recording and reproducing a digitized audio signal on a magnetic tape which has a slant track format including means for detecting a control signal to identify a digitized audio signal on the slant track

Also Published As

Publication number Publication date
JPS6321976B2 (en) 1988-05-10

Similar Documents

Publication Publication Date Title
CA1126400A (en) Method of controlling the position of a write or read head and a device for carrying out the method
ES484438A1 (en) FM Signal demodulator with defect detection
ATE20562T1 (en) MAGNETIC RECORDING/PLAYBACK DEVICE.
JPS55113160A (en) Tape run speed setting system of magnetic recording and reproducing device
DE3373968D1 (en) Apparatus for reproducing video and audio signals
GB1505631A (en) Tape timer error corrector circuits for tape recorder/reproducers
JPS57109126A (en) Detecting system for track shift
JPH02301304A (en) Fm demodulation circuit
ES442769A1 (en) End-of-play control system
JPS55163613A (en) Aural signal recording/reproducing system
GB1522339A (en) Apparatus for reproducing a video signal
JPS5528547A (en) Magnetic recorder/reproducer
JPS56145553A (en) Tracking error detection system
JPS56105354A (en) Reproducing signal level detection system
JPS5477116A (en) Data recording apparatus
JPS6466892A (en) Device for recording and reproducing magnetic tape identifying signal
KR910004722Y1 (en) Audio head switching circuit for video cassette recorder
JPS5545148A (en) Magnetic recording and reproducing device
JPH02276048A (en) Automatic program searching system using atf pilot signal
JPS5714263A (en) Mode discriminating circuit for video tape recorder
JPS5579582A (en) Servo method for video tape recorder
JPS6315662B2 (en)
JPS5470813A (en) Recording and detecting apparatus for magnetic tape
JPS5580811A (en) Magnetic record/reproduction system
JPS6284478A (en) Tape counter