JPS55122210A - Magnetic recording and reproducing device - Google Patents
Magnetic recording and reproducing deviceInfo
- Publication number
- JPS55122210A JPS55122210A JP3036079A JP3036079A JPS55122210A JP S55122210 A JPS55122210 A JP S55122210A JP 3036079 A JP3036079 A JP 3036079A JP 3036079 A JP3036079 A JP 3036079A JP S55122210 A JPS55122210 A JP S55122210A
- Authority
- JP
- Japan
- Prior art keywords
- adjustment
- correction
- time
- memory
- stored
- 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
Abstract
PURPOSE: To perform accurately automatic adjustment corresponding to the king and the magnetic characteristic of a tape in a short time by performing bias adjustment, frequency characteristic compensation, and recording sensitivity correction simultaneously.
CONSTITUTION: At an adjustment time, switch 13 is switched to the contact b side to record adjustment signals f1 and f2 onto tape 5 through head 4, and simultaneously they are reproduced through head 6. At a bias current correction time, the process of change of the output level corresponding to bias current change is stored in memory blocks 24 and 25, and memory contents are read by the signal from control part 28 consisting of a micro computer, and the maximum value is detected. At a frequency characteristic correction time, frequency characteristic variable block 15 has the characteristic controlled through memory unit 27, and a calculated correction quantity is stored and held. Further, at a memory sensitivity adjustment time, a correction value is stored in memory unit 26, and by the output voltage, variable resistance attenuator 14 is operated to make the signal level fixed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3036079A JPS55122210A (en) | 1979-03-14 | 1979-03-14 | Magnetic recording and reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3036079A JPS55122210A (en) | 1979-03-14 | 1979-03-14 | Magnetic recording and reproducing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55122210A true JPS55122210A (en) | 1980-09-19 |
Family
ID=12301686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3036079A Pending JPS55122210A (en) | 1979-03-14 | 1979-03-14 | Magnetic recording and reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55122210A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5798125A (en) * | 1980-12-09 | 1982-06-18 | Sharp Corp | Magnetic recorder and reproducer |
-
1979
- 1979-03-14 JP JP3036079A patent/JPS55122210A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5798125A (en) * | 1980-12-09 | 1982-06-18 | Sharp Corp | Magnetic recorder and reproducer |
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