JPS54100706A - Reference signal writing device for magnetic tape - Google Patents

Reference signal writing device for magnetic tape

Info

Publication number
JPS54100706A
JPS54100706A JP770278A JP770278A JPS54100706A JP S54100706 A JPS54100706 A JP S54100706A JP 770278 A JP770278 A JP 770278A JP 770278 A JP770278 A JP 770278A JP S54100706 A JPS54100706 A JP S54100706A
Authority
JP
Japan
Prior art keywords
magnetic tape
signals
capstan
rotation
angle
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
JP770278A
Other languages
Japanese (ja)
Other versions
JPS5751182B2 (en
Inventor
Akira Imamura
Katsuji Mori
Masaaki Kiyono
Naoyuki Tamaru
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.)
NEC Corp
Nippon Telegraph and Telephone Corp
Original Assignee
NEC Corp
Nippon Telegraph and Telephone Corp
Nippon Electric 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 NEC Corp, Nippon Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP770278A priority Critical patent/JPS54100706A/en
Publication of JPS54100706A publication Critical patent/JPS54100706A/en
Publication of JPS5751182B2 publication Critical patent/JPS5751182B2/ja
Granted legal-status Critical Current

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Abstract

PURPOSE: To make it possible to measure the recording accuracy of a magnetic tape bu counting the signals corresponding to the angle of rotation of a capstan with the use of reference signals which are read out of the magnetic tape.
CONSTITUTION: The signals read out by magnetic heads 7 and 8 are amplified at 9 and 10 and shaped in their waveforms at 11 and 12 so that they are fed to a measuring device 13. The angle of rotation of a capstan 2 for driving a magnetic tape 1 is detected at 3 and changed into pulses at 5 so that the resultant pulse signals are multiplified at 6 and fed to the measuring device 13. The pulse signals corresponding to the angle of rotation of the capstan are counted on the basis of the intervals of the reference signals which are read out from the heads 7 and 8 so that the writing accuracy of the reference signals is measured.
COPYRIGHT: (C)1979,JPO&Japio
JP770278A 1978-01-25 1978-01-25 Reference signal writing device for magnetic tape Granted JPS54100706A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP770278A JPS54100706A (en) 1978-01-25 1978-01-25 Reference signal writing device for magnetic tape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP770278A JPS54100706A (en) 1978-01-25 1978-01-25 Reference signal writing device for magnetic tape

Publications (2)

Publication Number Publication Date
JPS54100706A true JPS54100706A (en) 1979-08-08
JPS5751182B2 JPS5751182B2 (en) 1982-10-30

Family

ID=11673078

Family Applications (1)

Application Number Title Priority Date Filing Date
JP770278A Granted JPS54100706A (en) 1978-01-25 1978-01-25 Reference signal writing device for magnetic tape

Country Status (1)

Country Link
JP (1) JPS54100706A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6166688U (en) * 1984-10-06 1986-05-07

Also Published As

Publication number Publication date
JPS5751182B2 (en) 1982-10-30

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