JPS57179939A - Tracking control system - Google Patents

Tracking control system

Info

Publication number
JPS57179939A
JPS57179939A JP56064745A JP6474581A JPS57179939A JP S57179939 A JPS57179939 A JP S57179939A JP 56064745 A JP56064745 A JP 56064745A JP 6474581 A JP6474581 A JP 6474581A JP S57179939 A JPS57179939 A JP S57179939A
Authority
JP
Japan
Prior art keywords
signal
shift
output
track
shaking
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
JP56064745A
Other languages
Japanese (ja)
Other versions
JPS6321971B2 (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 JP56064745A priority Critical patent/JPS57179939A/en
Publication of JPS57179939A publication Critical patent/JPS57179939A/en
Publication of JPS6321971B2 publication Critical patent/JPS6321971B2/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

Abstract

PURPOSE:To compensate tracking shift, by integrating an FM siganl level reproduced with a shaking rotating head through sampling at each specified section for each track and controlling the amount of track shift from the integrated value through detection. CONSTITUTION:A pulse generator 8 generates a sampling pulse synchronized with a rotating head and opens a gate 7. An FM reproducing output is envelope- detected at 5 and inputted to a voltage controlled oscillator VCO6. A counter 9 integrates an output of the VOC6 from the gate 7 and stores it at 11. Counting values at each field are compared at 12, an output signal is stored at 13 as a track shift signal and summed at 15 with a shaking signal from a pulse generator 8 as a shift correction tracking signal via a tracking signal generating circuit 14. The addition output controls a head moving mechanism 17 via a driving amplifier 16, and a rotating head makes reproduction at higher and lower positions than a reference in accordance with the shaking signal. Thus, the track shift can accurately be compensated.
JP56064745A 1981-04-28 1981-04-28 Tracking control system Granted JPS57179939A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56064745A JPS57179939A (en) 1981-04-28 1981-04-28 Tracking control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56064745A JPS57179939A (en) 1981-04-28 1981-04-28 Tracking control system

Publications (2)

Publication Number Publication Date
JPS57179939A true JPS57179939A (en) 1982-11-05
JPS6321971B2 JPS6321971B2 (en) 1988-05-10

Family

ID=13266993

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56064745A Granted JPS57179939A (en) 1981-04-28 1981-04-28 Tracking control system

Country Status (1)

Country Link
JP (1) JPS57179939A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61110358A (en) * 1984-11-02 1986-05-28 Victor Co Of Japan Ltd Servo circuit
JPH03119510A (en) * 1989-09-29 1991-05-21 Mitsubishi Electric Corp Magnetic recording and reproducing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61110358A (en) * 1984-11-02 1986-05-28 Victor Co Of Japan Ltd Servo circuit
JPH03119510A (en) * 1989-09-29 1991-05-21 Mitsubishi Electric Corp Magnetic recording and reproducing device

Also Published As

Publication number Publication date
JPS6321971B2 (en) 1988-05-10

Similar Documents

Publication Publication Date Title
FR2406279A1 (en) SPEED ERROR CONTROL DEVICE
JPS5782057A (en) Density adjusting method in recording of picture
JPS5643890A (en) Recording and reproducing device for pal video signal
JPS57179939A (en) Tracking control system
JPS5525805A (en) Servo circuit of video tape recorder
JPS5750323A (en) Video signal recording and reproducing device
JPS57120269A (en) Disk recording and reproducing device
JPS57179940A (en) Tracking control system
JPS57181432A (en) Optical type disc reproducer
JPS57179938A (en) Tracking control system
JPS5479021A (en) Magnetic recording system
JPS5237025A (en) Dropout compensation device
JPS5740776A (en) Run controller for endless tape
JPS57143724A (en) Track shift detection system
JPS5755530A (en) Head tracking controller
JPS5758212A (en) Magnetic disk defect detecting device
JPS5730144A (en) Disk motor driving circuit for video disk player
JPS6470951A (en) Rotary drum control circuit
JPS5611621A (en) Information recording and reproducing unit
JPS55150105A (en) Magnetic recording and reproducing device
JPS5528160A (en) Servo mechanism
JPS55132537A (en) Track access system
JPS6486333A (en) Optical recording and reproducing device
JPS648566A (en) Tracking servo device for optical disk device
JPS5456805A (en) Method and apparatus for recording and reproducing