JPS57100613A - Magnetic recording and reproducing system - Google Patents
Magnetic recording and reproducing systemInfo
- Publication number
- JPS57100613A JPS57100613A JP17540180A JP17540180A JPS57100613A JP S57100613 A JPS57100613 A JP S57100613A JP 17540180 A JP17540180 A JP 17540180A JP 17540180 A JP17540180 A JP 17540180A JP S57100613 A JPS57100613 A JP S57100613A
- Authority
- JP
- Japan
- Prior art keywords
- controller
- sets
- positions
- ratio
- recording head
- 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
- 238000001228 spectrum Methods 0.000 abstract 2
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/22—Signal processing not specific to the method of recording or reproducing; Circuits therefor for reducing distortions
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
PURPOSE:To reduce distortion, to improve an S/N ratio, and to obtain expansion in high-frequency range, by automatically giving the optimum conditions to the various kinds of magnetic tapes. CONSTITUTION:When switches 13, 20 and 6 are placed at positions 1 respectively, a test signal 12 recorded on a tape 1 through a recording head 4. Then, a reproduction signal reproduced by a reproducing head 5 is analyzed by a processor 19, which adjusts and sets a bias current controller 17 to the best center value, and also sets equalizers 16 and 18 to the best center values. When those switches are changed over to positions 2, the output of a signal source 10 is supplied to the recording head 4 through a level controller 7, but in this case, the output of a spectrum analyzer 14 is applied to the controller 17 in accordance with its spectrum to vary a bias value centering on its center value. Thus, distortion is reduced, an S/N ratio is improved, and high-frequency-range expansion is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17540180A JPS57100613A (en) | 1980-12-12 | 1980-12-12 | Magnetic recording and reproducing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17540180A JPS57100613A (en) | 1980-12-12 | 1980-12-12 | Magnetic recording and reproducing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57100613A true JPS57100613A (en) | 1982-06-22 |
Family
ID=15995442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17540180A Pending JPS57100613A (en) | 1980-12-12 | 1980-12-12 | Magnetic recording and reproducing system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57100613A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59135511U (en) * | 1983-02-23 | 1984-09-10 | アイワ株式会社 | tape recorder |
| JPS59173128U (en) * | 1983-04-30 | 1984-11-19 | 日本コロムビア株式会社 | magnetic recording and reproducing device |
| JPS59215011A (en) * | 1983-05-20 | 1984-12-04 | Akai Electric Co Ltd | Tape recorder |
| EP0651373A3 (en) * | 1993-05-24 | 1995-10-18 | Trace Mountain Prod Inc | Method and apparatus for adjusting asymmetric recording signals. |
-
1980
- 1980-12-12 JP JP17540180A patent/JPS57100613A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59135511U (en) * | 1983-02-23 | 1984-09-10 | アイワ株式会社 | tape recorder |
| JPS59173128U (en) * | 1983-04-30 | 1984-11-19 | 日本コロムビア株式会社 | magnetic recording and reproducing device |
| JPS59215011A (en) * | 1983-05-20 | 1984-12-04 | Akai Electric Co Ltd | Tape recorder |
| EP0651373A3 (en) * | 1993-05-24 | 1995-10-18 | Trace Mountain Prod Inc | Method and apparatus for adjusting asymmetric recording signals. |
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