JPS55150122A - Magnetic recording and reproducing device - Google Patents
Magnetic recording and reproducing deviceInfo
- Publication number
- JPS55150122A JPS55150122A JP5709879A JP5709879A JPS55150122A JP S55150122 A JPS55150122 A JP S55150122A JP 5709879 A JP5709879 A JP 5709879A JP 5709879 A JP5709879 A JP 5709879A JP S55150122 A JPS55150122 A JP S55150122A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- level
- reference signal
- detector
- change
- 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
- Television Signal Processing For Recording (AREA)
Abstract
PURPOSE:To make it possible to change reproduction equalizing characteristics automatically and selectively by detecting the level of a reproduced reference signal, by generating a switching signal correspondingly and then cy changing reproduction equalizing characteristics by the switching signal. CONSTITUTION:A reference signal from oscillator 6 is recorded on tape 1 at a fixed level by way of recording amplifier 7 and recording head 8 and reproduced by reproducing head 2. The reproduced reference signal is amplified by reproducing amplifier 3 and changed by rectifying circuit 10 into a DC signal, which is supplied to level detector 9 composed of a Schmitt circuit, etc. This detector 9, when the level of the DC signal from rectifying circuit 10, i.e., that of the reference signal generated by head 2 reaches a fixed value, generates an output and operates to apply a control signal to reproducting equalizing change-over circuit 5 and when detector 9 generates the output, change-over circuit 5 changes equalizing characteristics automatically.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5709879A JPS55150122A (en) | 1979-05-11 | 1979-05-11 | Magnetic recording and reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5709879A JPS55150122A (en) | 1979-05-11 | 1979-05-11 | Magnetic recording and reproducing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55150122A true JPS55150122A (en) | 1980-11-21 |
Family
ID=13046024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5709879A Pending JPS55150122A (en) | 1979-05-11 | 1979-05-11 | Magnetic recording and reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55150122A (en) |
-
1979
- 1979-05-11 JP JP5709879A patent/JPS55150122A/en active Pending
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |