JPS56144680A - Controller of magnetic recording and reproducing device - Google Patents

Controller of magnetic recording and reproducing device

Info

Publication number
JPS56144680A
JPS56144680A JP4839580A JP4839580A JPS56144680A JP S56144680 A JPS56144680 A JP S56144680A JP 4839580 A JP4839580 A JP 4839580A JP 4839580 A JP4839580 A JP 4839580A JP S56144680 A JPS56144680 A JP S56144680A
Authority
JP
Japan
Prior art keywords
phase
rotary
fast
reference signal
signal generating
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
JP4839580A
Other languages
Japanese (ja)
Other versions
JPS6356753B2 (en
Inventor
Toshiomi Yabu
Tatsuo Wada
Koichi Yamada
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 JP4839580A priority Critical patent/JPS56144680A/en
Publication of JPS56144680A publication Critical patent/JPS56144680A/en
Publication of JPS6356753B2 publication Critical patent/JPS6356753B2/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
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/46—Controlling, regulating, or indicating speed
    • G11B15/467—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven
    • G11B15/473—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the heads

Abstract

PURPOSE:To fix the position of noise on a reproduction screen in such as fast-forward mode by exercising phase-synchronizing control over the rotary phase, etc., of a rotary magnetic head by specifying the output frequency, etc., of a servo reference signal generating circuit in such as fast-forward mode. CONSTITUTION:Double-speed ratio (n) of a magnetic tape carriage speed to a normal playback speed in fast-forward or rewind mode and output frequency Rfv' of servo reference signal generating circuits 16, 18, etc., are specified as shown by the expressions, where fV is a field frequency, VT a magnetic tape carriage speed in normal recording and playback mode, (m) a control signal frequency-division ratio, (phi) the diameter of the rotary magnetic head cylinder, and H the number of heads. In the - or + expression, sign ''-'' is used when the tape carriage direction agrees with the rotating direction of the cylinder, and ''+'' is used when the both disagree. Then, the rotary phase of the magnetic head and the phase of a control signal reproduced from the magnetic tape are synchronized with the output signals of said servo reference signal generating circuits 16, 18, etc.
JP4839580A 1980-04-11 1980-04-11 Controller of magnetic recording and reproducing device Granted JPS56144680A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4839580A JPS56144680A (en) 1980-04-11 1980-04-11 Controller of magnetic recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4839580A JPS56144680A (en) 1980-04-11 1980-04-11 Controller of magnetic recording and reproducing device

Publications (2)

Publication Number Publication Date
JPS56144680A true JPS56144680A (en) 1981-11-11
JPS6356753B2 JPS6356753B2 (en) 1988-11-09

Family

ID=12802102

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4839580A Granted JPS56144680A (en) 1980-04-11 1980-04-11 Controller of magnetic recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS56144680A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59144058A (en) * 1983-02-07 1984-08-17 Matsushita Electric Ind Co Ltd Tracking system of magnetic video recording and reproducing device
JPS60253047A (en) * 1984-05-29 1985-12-13 Pioneer Electronic Corp Drum rotation driving device in video tape recorder of helical scanning system
JPS61154379A (en) * 1984-12-27 1986-07-14 Toshiba Corp High speed reproducing device of video tape recorder
JPS6231283A (en) * 1985-08-02 1987-02-10 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59144058A (en) * 1983-02-07 1984-08-17 Matsushita Electric Ind Co Ltd Tracking system of magnetic video recording and reproducing device
JPS60253047A (en) * 1984-05-29 1985-12-13 Pioneer Electronic Corp Drum rotation driving device in video tape recorder of helical scanning system
JPS61154379A (en) * 1984-12-27 1986-07-14 Toshiba Corp High speed reproducing device of video tape recorder
JPS6231283A (en) * 1985-08-02 1987-02-10 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device

Also Published As

Publication number Publication date
JPS6356753B2 (en) 1988-11-09

Similar Documents

Publication Publication Date Title
JPS57181284A (en) Magnetic video recording and reproducing device
MY109162A (en) Improved magnetic recording/reproducing apparatus using segment recording system
JPS56140541A (en) Magnetic tape driving device
JPS56144680A (en) Controller of magnetic recording and reproducing device
KR840006718A (en) Servo Circuit of Magnetic Regeneration Device
AU578835B2 (en) Apparatus for recording and reproducing signals on magnetic tape
JPS59185736U (en) Video signal reproducing device
JPS56149876A (en) Tracking device
JPS56166678A (en) Magnetic video recording and reproducing device
JPS5786159A (en) Magnetic reproducing device
JPS5269311A (en) Magnetic recording and reproduction device
JPS5528547A (en) Magnetic recorder/reproducer
JPS61296556A (en) Head speed controller of rotary head type magnetic recording and reproducing device
JPS6469176A (en) Video signal reproducing device
JPS5614785A (en) Magnetic recording and reproducing device
GB919481A (en) Improvements in or relating to magnetic recording and reproducing apparatus
JPS5552507A (en) Magnetic recording and reproducing device of rotary head type
JPS5250209A (en) Magnetic recorder and reproducer
GB899918A (en) Running speed control systems for magnetic tapes
JPS6446250A (en) Video tape recorder control device
JPH056752B2 (en)
JPS58133652A (en) Tape running device
JPH0544752B2 (en)
JPS6448256A (en) Motor servo circuit for recording and reproducing device
JPS57210491A (en) Digital audio editing system