JPS55122229A - Magnetic picture recording and reproducing device - Google Patents

Magnetic picture recording and reproducing device

Info

Publication number
JPS55122229A
JPS55122229A JP2768779A JP2768779A JPS55122229A JP S55122229 A JPS55122229 A JP S55122229A JP 2768779 A JP2768779 A JP 2768779A JP 2768779 A JP2768779 A JP 2768779A JP S55122229 A JPS55122229 A JP S55122229A
Authority
JP
Japan
Prior art keywords
inputted
control signal
frequency
drum
reproducing
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
JP2768779A
Other languages
Japanese (ja)
Inventor
Hitoshi Hamamoto
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.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi KK
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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP2768779A priority Critical patent/JPS55122229A/en
Publication of JPS55122229A publication Critical patent/JPS55122229A/en
Pending legal-status Critical Current

Links

Landscapes

  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE: To prevent generation of noise and improve maintenance by supplying high-frequency power modulated by a control signal into a drum through a rotary transformer and by demodulating it into a control signal by the frequency discrimination circuit in th drum.
CONSTITUTION: The reproducing signal induced in reproducing head 9 is amplified up to a prescribed level by amplifier 10 and is inputted to video signal demodulator 12 through rotary transformer 11, and simultaneously, it is inputted to control signal generation circuit 1. Meanwhile, generation circuit 1 outputs control signal 1a required for reproducing head driving element 8 from the output terminal according to the inputted reproducing signal, and this control signal 1a is inputted to frequency modulator 2 to modulate the frequency. Further, this modulation output is inputted to a high-frequency power amplifier and is amplified up to a prescribed power level and is supplied into a rotary drum through rotary transformer 4. As a result, generation of noise can be prevented, and maintenance can be improved.
COPYRIGHT: (C)1980,JPO&Japio
JP2768779A 1979-03-12 1979-03-12 Magnetic picture recording and reproducing device Pending JPS55122229A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2768779A JPS55122229A (en) 1979-03-12 1979-03-12 Magnetic picture recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2768779A JPS55122229A (en) 1979-03-12 1979-03-12 Magnetic picture recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS55122229A true JPS55122229A (en) 1980-09-19

Family

ID=12227870

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2768779A Pending JPS55122229A (en) 1979-03-12 1979-03-12 Magnetic picture recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS55122229A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5996508A (en) * 1982-11-24 1984-06-04 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device
JPS5996510A (en) * 1982-11-24 1984-06-04 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device
JPS5996509A (en) * 1982-11-24 1984-06-04 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device
JPS6142701A (en) * 1984-08-02 1986-03-01 Matsushita Electric Ind Co Ltd Magentic recording and reproducing device
JPS62112201A (en) * 1985-11-11 1987-05-23 Canon Inc Recording and reproducing device
JPH0392831U (en) * 1982-05-18 1991-09-20

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0392831U (en) * 1982-05-18 1991-09-20
JPS5996508A (en) * 1982-11-24 1984-06-04 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device
JPS5996510A (en) * 1982-11-24 1984-06-04 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device
JPS5996509A (en) * 1982-11-24 1984-06-04 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device
JPS6142701A (en) * 1984-08-02 1986-03-01 Matsushita Electric Ind Co Ltd Magentic recording and reproducing device
JPS62112201A (en) * 1985-11-11 1987-05-23 Canon Inc Recording and reproducing device

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