JPS55122229A - Magnetic picture recording and reproducing device - Google Patents
Magnetic picture recording and reproducing deviceInfo
- 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
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
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)
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 |
-
1979
- 1979-03-12 JP JP2768779A patent/JPS55122229A/en active Pending
Cited By (6)
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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