JPS54145118A - Winding quantity measuring system of magnetic tape - Google Patents

Winding quantity measuring system of magnetic tape

Info

Publication number
JPS54145118A
JPS54145118A JP5230278A JP5230278A JPS54145118A JP S54145118 A JPS54145118 A JP S54145118A JP 5230278 A JP5230278 A JP 5230278A JP 5230278 A JP5230278 A JP 5230278A JP S54145118 A JPS54145118 A JP S54145118A
Authority
JP
Japan
Prior art keywords
reel
tape
reels
wound
magnetic tape
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
JP5230278A
Other languages
Japanese (ja)
Other versions
JPS6014428B2 (en
Inventor
Minoru Morio
Hidehiko Okada
Hidetoshi Kamoto
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 JP53052302A priority Critical patent/JPS6014428B2/en
Publication of JPS54145118A publication Critical patent/JPS54145118A/en
Publication of JPS6014428B2 publication Critical patent/JPS6014428B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)

Abstract

PURPOSE: To enable the quantity of the magnetic tape wound to reels to be detected with high accuracy without running the tape by operating and measuring the revolution quantities of the reels.
CONSTITUTION: It is detected 20 that the reels 4, 5 wound with a magnetic tape 1 are mounted to respective turntables 8, 9. After the tape 1 put between the reels is spread by letting one of the reels rotate and operate, a specified quantity of the tape is pulled from the other reel with one reel being held fixed. During this pulling- out time, the quantity of revolutions of the other reel 22 is detected and the winding quantity of the tape wound on the reel is operated and measured 28 from the quantity of revolutions. In this case, the circuit 28 obtains the winding quantity of the reel wound on the feed side reel as the residual time of the tape at the recording or reproducing operation.
COPYRIGHT: (C)1979,JPO&Japio
JP53052302A 1978-05-02 1978-05-02 Magnetic tape winding amount measurement method Expired JPS6014428B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53052302A JPS6014428B2 (en) 1978-05-02 1978-05-02 Magnetic tape winding amount measurement method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53052302A JPS6014428B2 (en) 1978-05-02 1978-05-02 Magnetic tape winding amount measurement method

Publications (2)

Publication Number Publication Date
JPS54145118A true JPS54145118A (en) 1979-11-13
JPS6014428B2 JPS6014428B2 (en) 1985-04-13

Family

ID=12910989

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53052302A Expired JPS6014428B2 (en) 1978-05-02 1978-05-02 Magnetic tape winding amount measurement method

Country Status (1)

Country Link
JP (1) JPS6014428B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5835781A (en) * 1981-08-28 1983-03-02 Akai Electric Co Ltd Detector for tape running amount
JPS5987682A (en) * 1982-11-10 1984-05-21 Sanyo Electric Co Ltd Tape remainder detecting and display device
JPS6018877A (en) * 1984-06-15 1985-01-30 Sanyo Electric Co Ltd Detection and display device for tape remaining quantity
JPS6177183A (en) * 1984-09-21 1986-04-19 Sanyo Electric Co Ltd Detecting and displaying device of remaining quantity of tape

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5835781A (en) * 1981-08-28 1983-03-02 Akai Electric Co Ltd Detector for tape running amount
JPS5987682A (en) * 1982-11-10 1984-05-21 Sanyo Electric Co Ltd Tape remainder detecting and display device
JPH0230112B2 (en) * 1982-11-10 1990-07-04 Sanyo Electric Co
JPS6018877A (en) * 1984-06-15 1985-01-30 Sanyo Electric Co Ltd Detection and display device for tape remaining quantity
JPS6177183A (en) * 1984-09-21 1986-04-19 Sanyo Electric Co Ltd Detecting and displaying device of remaining quantity of tape

Also Published As

Publication number Publication date
JPS6014428B2 (en) 1985-04-13

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