JPS5632885A - Tracking correction unit of variable-speed vtr - Google Patents

Tracking correction unit of variable-speed vtr

Info

Publication number
JPS5632885A
JPS5632885A JP10822379A JP10822379A JPS5632885A JP S5632885 A JPS5632885 A JP S5632885A JP 10822379 A JP10822379 A JP 10822379A JP 10822379 A JP10822379 A JP 10822379A JP S5632885 A JPS5632885 A JP S5632885A
Authority
JP
Japan
Prior art keywords
control signal
variable
agree
scale factor
speed
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
JP10822379A
Other languages
Japanese (ja)
Other versions
JPS6252990B2 (en
Inventor
Nobuo Azuma
Katsuo Mori
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP10822379A priority Critical patent/JPS5632885A/en
Publication of JPS5632885A publication Critical patent/JPS5632885A/en
Publication of JPS6252990B2 publication Critical patent/JPS6252990B2/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
    • G11B15/1808—Driving of both record carrier and head

Abstract

PURPOSE:To drive a noise band by permitting the start of a heat to agree with a control signal by delaying the control signal applied to a tracking servo circuit according to a reproduction speed. CONSTITUTION:Tracking offset circuit 19 is a delay circuit composed of a digital counting method that uses signal (a) as a reference clock, and by change-over switch 18 for the variable-speed scale factor control signal (e) is delayed in fixed offset extent and then inputted to capstan servo circuit 10. In accordance with the best tracking offset extent that corresponds to a random variable-speed scale factor, when the scale factor is multiplied or divided by an odd number, the start of the 2ch (channel) head is made to agree with the control signal and when by an even number, the start of the 1ch head is made to agree with the control signal.
JP10822379A 1979-08-27 1979-08-27 Tracking correction unit of variable-speed vtr Granted JPS5632885A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10822379A JPS5632885A (en) 1979-08-27 1979-08-27 Tracking correction unit of variable-speed vtr

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10822379A JPS5632885A (en) 1979-08-27 1979-08-27 Tracking correction unit of variable-speed vtr

Publications (2)

Publication Number Publication Date
JPS5632885A true JPS5632885A (en) 1981-04-02
JPS6252990B2 JPS6252990B2 (en) 1987-11-09

Family

ID=14479159

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10822379A Granted JPS5632885A (en) 1979-08-27 1979-08-27 Tracking correction unit of variable-speed vtr

Country Status (1)

Country Link
JP (1) JPS5632885A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0112547A2 (en) * 1982-12-24 1984-07-04 Hitachi, Ltd. Method of reproducing an information at variable speed from a magnetic tape and apparatus thereof
JPS60103546A (en) * 1983-11-11 1985-06-07 Hitachi Ltd Variable speed reproduction tracking device of magnetic recording and reproducing device
JPS61273740A (en) * 1985-05-28 1986-12-04 Matsushita Electric Ind Co Ltd Magnetic reproducing device for dubbing
US4892762A (en) * 1988-05-12 1990-01-09 Continental Baking Company Reduced calorie high fiber bread containing a treated soy polysaccharide material

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53120327A (en) * 1977-03-30 1978-10-20 Victor Co Of Japan Ltd Magnetic recording reproducing system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53120327A (en) * 1977-03-30 1978-10-20 Victor Co Of Japan Ltd Magnetic recording reproducing system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0112547A2 (en) * 1982-12-24 1984-07-04 Hitachi, Ltd. Method of reproducing an information at variable speed from a magnetic tape and apparatus thereof
JPS60103546A (en) * 1983-11-11 1985-06-07 Hitachi Ltd Variable speed reproduction tracking device of magnetic recording and reproducing device
JPH0572794B2 (en) * 1983-11-11 1993-10-13 Hitachi Ltd
JPS61273740A (en) * 1985-05-28 1986-12-04 Matsushita Electric Ind Co Ltd Magnetic reproducing device for dubbing
US4892762A (en) * 1988-05-12 1990-01-09 Continental Baking Company Reduced calorie high fiber bread containing a treated soy polysaccharide material

Also Published As

Publication number Publication date
JPS6252990B2 (en) 1987-11-09

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