JPS56117357A - Magnetic tape running device - Google Patents

Magnetic tape running device

Info

Publication number
JPS56117357A
JPS56117357A JP1945780A JP1945780A JPS56117357A JP S56117357 A JPS56117357 A JP S56117357A JP 1945780 A JP1945780 A JP 1945780A JP 1945780 A JP1945780 A JP 1945780A JP S56117357 A JPS56117357 A JP S56117357A
Authority
JP
Japan
Prior art keywords
frequency
output
tape
capstans
difference
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
JP1945780A
Other languages
Japanese (ja)
Inventor
Kenji Kimura
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.)
Olympus Corp
Original Assignee
Olympus Optical 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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP1945780A priority Critical patent/JPS56117357A/en
Publication of JPS56117357A publication Critical patent/JPS56117357A/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
    • G11B15/46—Controlling, regulating, or indicating speed

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)

Abstract

PURPOSE:To enable to keep constant the tape tension at all times and also to set arbitrarily, by detecting the difference frequency of a capstan rotating frequency of a pair of tape feed drive sections, and comparing the difference of number of revolution of both the capstans with the reference frequency. CONSTITUTION:A pair of tape drive sections 4, 3 are located at the both sides of a magnetic head with a given clearance, and the rotating frequency of the both capstans 32, 42 are detected with photosensors 38, 48 respectively. If the speed of the both capstans 32, 42 are different, saw tooth wave output of the frequency difference is produced in a sampling hole circuit 8, and this output is compared with the reference frequency at a phase comparator 15, the output of the comparator 15 is given to a mixer 11, and the rotating frequency of a capstan 42 is controlled by superimposing the output on a motor drive voltage being the output of a servo- circuit 10, allowing to keep constant the tape tension of the tape 1.
JP1945780A 1980-02-18 1980-02-18 Magnetic tape running device Pending JPS56117357A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1945780A JPS56117357A (en) 1980-02-18 1980-02-18 Magnetic tape running device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1945780A JPS56117357A (en) 1980-02-18 1980-02-18 Magnetic tape running device

Publications (1)

Publication Number Publication Date
JPS56117357A true JPS56117357A (en) 1981-09-14

Family

ID=11999840

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1945780A Pending JPS56117357A (en) 1980-02-18 1980-02-18 Magnetic tape running device

Country Status (1)

Country Link
JP (1) JPS56117357A (en)

Similar Documents

Publication Publication Date Title
GB1509859A (en) Direct reel-to-reel tape transport
JPS5545161A (en) Search controller of tape recorder
JPS56117357A (en) Magnetic tape running device
KR840006718A (en) Servo Circuit of Magnetic Regeneration Device
JPS545408A (en) Magnetic recorder-reproducer
GB921177A (en) Motor control circuit
FR2277381A1 (en) BELT UNWINDERS WITH CONSTANT TORQUE CONSTANT COIL AND CAPSTAN DRIVE MOTORS
JPS5479010A (en) Recording mode discriminator
JPS5661064A (en) Recording device using disc shape recording medium
US4985787A (en) Magnetic recording apparatus for positioning magnetic head to track on magnetic tape
JPS5786159A (en) Magnetic reproducing device
JPS57169955A (en) Jogging device for vtr
JPS5727408A (en) Recording and reproducing device of magnetic tape
JPS5562551A (en) Tape recorder
JPS5446016A (en) Magnetic recorder-reproducer
SU1014022A1 (en) Tape-drive mechanism
SU551691A1 (en) Device for controlling the motor of a side assembly of a magnetic recording apparatus
JPS6439653A (en) Reel servo circuit
JPS576457A (en) Tape tension control system of recording and reproducing device
JPS645389A (en) Information reproducing apparatus
JPS55153151A (en) Back-space unit
JPS5296512A (en) Rotary head type magnetic picture recording and reproducing apparatus
JPS5350806A (en) Power transmission device of tape recorder
JPS5671842A (en) Magnetic recording and playback device
JPS54128714A (en) Tape drive mechanism for magnetic recording and reproducing apparatus