JPS5764349A - Tape driving method - Google Patents

Tape driving method

Info

Publication number
JPS5764349A
JPS5764349A JP55137047A JP13704780A JPS5764349A JP S5764349 A JPS5764349 A JP S5764349A JP 55137047 A JP55137047 A JP 55137047A JP 13704780 A JP13704780 A JP 13704780A JP S5764349 A JPS5764349 A JP S5764349A
Authority
JP
Japan
Prior art keywords
reel
motor
straight line
rotational frequency
torque
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.)
Pending
Application number
JP55137047A
Other languages
Japanese (ja)
Inventor
Ryohei Uchida
Kenji Shiroshita
Minoru Yokoyama
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP55137047A priority Critical patent/JPS5764349A/en
Publication of JPS5764349A publication Critical patent/JPS5764349A/en
Pending 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
    • G11B15/43—Control or regulation of mechanical tension of record carrier, e.g. tape tension

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Abstract

PURPOSE:To stabilize a reproducing picture, by adjusting the reduction gear ratio of a reel and a driving DC motor, and applied voltage of the motor, and making the tension of a tape almost constant. CONSTITUTION:When the product of rotational frequency of a reel and its torque is constant, the tension of a tape is kept constant. For instance, a curve C is drawn by setting the rotational frequency and torque to the horizontal axis and the longitudinal axis, respectively. The curve C makes the winding start and its end A and B, respectively, and is approximated by a straight line (a) passing through A and B. When the rotational frequency - torque characteristic of a driving DC motor is considered to draw a straight line (f), the rotational frequency - torque characteristic of the reel comes to draw a straight line (d) by governing the reduction gear ratio of the reel and the motor. Subsequently, when applied voltage of the motor is adjusted, the straight line showing the rotational frequency - torque characteristic of the reel moves in parallel, and is overlapped to the straight line (a) drawing the characteristic being approximate to the rotational frequcncy - torque characteristic of the reel, which makes the tension of a tape constant.
JP55137047A 1980-09-30 1980-09-30 Tape driving method Pending JPS5764349A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55137047A JPS5764349A (en) 1980-09-30 1980-09-30 Tape driving method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55137047A JPS5764349A (en) 1980-09-30 1980-09-30 Tape driving method

Publications (1)

Publication Number Publication Date
JPS5764349A true JPS5764349A (en) 1982-04-19

Family

ID=15189623

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55137047A Pending JPS5764349A (en) 1980-09-30 1980-09-30 Tape driving method

Country Status (1)

Country Link
JP (1) JPS5764349A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6154065A (en) * 1984-08-24 1986-03-18 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4861112A (en) * 1971-11-26 1973-08-27

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4861112A (en) * 1971-11-26 1973-08-27

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6154065A (en) * 1984-08-24 1986-03-18 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device

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