JPS54128715A - Magnetic recording and reproducing apparatus - Google Patents

Magnetic recording and reproducing apparatus

Info

Publication number
JPS54128715A
JPS54128715A JP3639478A JP3639478A JPS54128715A JP S54128715 A JPS54128715 A JP S54128715A JP 3639478 A JP3639478 A JP 3639478A JP 3639478 A JP3639478 A JP 3639478A JP S54128715 A JPS54128715 A JP S54128715A
Authority
JP
Japan
Prior art keywords
motor
output signals
feed
magnetic tape
detected output
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
JP3639478A
Other languages
Japanese (ja)
Inventor
Shinji Takada
Osamu Shimada
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP3639478A priority Critical patent/JPS54128715A/en
Publication of JPS54128715A publication Critical patent/JPS54128715A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To hold the tension upon a running magnetic tape at a constant level by making such a construction that the feed of a magnetic tape is controlled in response to the detected output signals from detecting means.
CONSTITUTION: The variation in a motor driving current is detected by means of a voltage comparator 32 which has a detecting resistor 31 connected at its both terminals with the positive and negative input terminal thereof. The detected output signals, which are generated by the voltage comparator 32, are negatively fed back to a motor drive circuit 33 which is used to drive a first reel motor 21. Here, the first motor 21 controls the feed of a magnetic tape 1 from a feed reel 5, and the tape 1 is made to run under a preset tension condition so that the drive current to be fed to a drum motor 23 is negatively fed back at a constant level in response to the detected output signals.
COPYRIGHT: (C)1979,JPO&Japio
JP3639478A 1978-03-29 1978-03-29 Magnetic recording and reproducing apparatus Pending JPS54128715A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3639478A JPS54128715A (en) 1978-03-29 1978-03-29 Magnetic recording and reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3639478A JPS54128715A (en) 1978-03-29 1978-03-29 Magnetic recording and reproducing apparatus

Publications (1)

Publication Number Publication Date
JPS54128715A true JPS54128715A (en) 1979-10-05

Family

ID=12468629

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3639478A Pending JPS54128715A (en) 1978-03-29 1978-03-29 Magnetic recording and reproducing apparatus

Country Status (1)

Country Link
JP (1) JPS54128715A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01271952A (en) * 1987-06-19 1989-10-31 Matsushita Electric Ind Co Ltd Method for controlling tape tension of magnetic recording and reproducing device
JPH02201759A (en) * 1989-01-31 1990-08-09 Alps Electric Co Ltd Tape tension controller for tape player
JP2005198886A (en) * 2004-01-16 2005-07-28 Hinaka Seisakusho:Kk Runner for later insertion

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01271952A (en) * 1987-06-19 1989-10-31 Matsushita Electric Ind Co Ltd Method for controlling tape tension of magnetic recording and reproducing device
JPH02201759A (en) * 1989-01-31 1990-08-09 Alps Electric Co Ltd Tape tension controller for tape player
JP2005198886A (en) * 2004-01-16 2005-07-28 Hinaka Seisakusho:Kk Runner for later insertion

Similar Documents

Publication Publication Date Title
JPS54128715A (en) Magnetic recording and reproducing apparatus
JPS5371814A (en) Picture signal recording and reproducing apparatus
JPS5690456A (en) Tape speed control system
JPS54128714A (en) Tape drive mechanism for magnetic recording and reproducing apparatus
JPS5548857A (en) Magnetic recording and reproducing unit
JPS5637851A (en) Servo circuit of reel motor of tape recorder
JPS573242A (en) Reel motor driving circuit for high-speed playback
JPS56163552A (en) Tape tension control device
JPS5525838A (en) Magnetic tape device
JPS55142452A (en) Tape tension controlling unit for magnetic recording and reproducing unit
JPS54136306A (en) Tape recorder
JPS5625253A (en) Tape run speed controller of magnetic recording and reproducing device
JPS5589938A (en) Tape drive and control unit
JPS563447A (en) Tape recorder
JPS5665346A (en) Tape recorder
JPS576457A (en) Tape tension control system of recording and reproducing device
JPS5350807A (en) Driving system of cassette tape recorder
SU1014022A1 (en) Tape-drive mechanism
JPS524809A (en) Motor drive control system for automatic tape winding device
JPS57172561A (en) Driver for reel turntable
JPS52104206A (en) Reel drive motor control circuit in tape recorder
JPS53100209A (en) Tape travel controller
JPS5618735A (en) Detecting method for tape tension
JPS5671871A (en) Magnetic bubble memory device
JPS5567913A (en) Magnetic recording and reproducing device