JPS5545145A - Magnetic recording and reproducing device - Google Patents
Magnetic recording and reproducing deviceInfo
- Publication number
- JPS5545145A JPS5545145A JP11792878A JP11792878A JPS5545145A JP S5545145 A JPS5545145 A JP S5545145A JP 11792878 A JP11792878 A JP 11792878A JP 11792878 A JP11792878 A JP 11792878A JP S5545145 A JPS5545145 A JP S5545145A
- Authority
- JP
- Japan
- Prior art keywords
- reference signal
- recording system
- recording
- reproduction output
- recorded
- 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 make the accurate adjustment of a recording system by repeatedly adjusting the recording system by comparing a value obtained from an identical- frequency reference signal by recording, reproducing, sampling and holding.
CONSTITUTION: A reference signal of a fixed frequency from reference signal oscillation part 4 is recorded on tape 7 and reproduced, and the reproduction output is rectified and held by sample holding circuit 10; and it is A/D-converted and variable recording equalizer 2, variable gain amplifier 3, etc., are controlled through control part 5 by a control signal corresponding to a difference from a reference reproduction digital output, thereby adjusting the recording system. Then, a reference signal of the same frequency is recorded and regenerated and this adjustment is repeated to decrease gradually the influence of the linearlity between the reproduction output and a control signal formed by the reproduction output, so that accurate adjustment of the recording system can be made.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11792878A JPS5545145A (en) | 1978-09-27 | 1978-09-27 | Magnetic recording and reproducing device |
DE2938937A DE2938937C2 (en) | 1978-09-27 | 1979-09-26 | Adjustment device and method for a magnetic tape recorder and reproducer |
US06/390,884 US4422109A (en) | 1978-09-27 | 1982-06-22 | Magnetic recording and reproducing apparatus automatically adjustable to each individual magnetic tape |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11792878A JPS5545145A (en) | 1978-09-27 | 1978-09-27 | Magnetic recording and reproducing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5545145A true JPS5545145A (en) | 1980-03-29 |
Family
ID=14723661
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11792878A Pending JPS5545145A (en) | 1978-09-27 | 1978-09-27 | Magnetic recording and reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5545145A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57120209A (en) * | 1981-01-14 | 1982-07-27 | Nippon Gakki Seizo Kk | Setting device for optimum operation characteristics of magnetic recorder and reproducer |
EP0480483A2 (en) * | 1986-12-05 | 1992-04-15 | Minnesota Mining And Manufacturing Company | Method and system for dynamically calibrating the gain of a variable gain read amplifier |
-
1978
- 1978-09-27 JP JP11792878A patent/JPS5545145A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57120209A (en) * | 1981-01-14 | 1982-07-27 | Nippon Gakki Seizo Kk | Setting device for optimum operation characteristics of magnetic recorder and reproducer |
JPH0239005B2 (en) * | 1981-01-14 | 1990-09-03 | Yamaha Corp | |
EP0480483A2 (en) * | 1986-12-05 | 1992-04-15 | Minnesota Mining And Manufacturing Company | Method and system for dynamically calibrating the gain of a variable gain read amplifier |
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