JPS5522232A - Digital magnetic recorder/reproducer - Google Patents
Digital magnetic recorder/reproducerInfo
- Publication number
- JPS5522232A JPS5522232A JP9309278A JP9309278A JPS5522232A JP S5522232 A JPS5522232 A JP S5522232A JP 9309278 A JP9309278 A JP 9309278A JP 9309278 A JP9309278 A JP 9309278A JP S5522232 A JPS5522232 A JP S5522232A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- code
- reproduced
- code signal
- waveform
- 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.)
- Granted
Links
Landscapes
- Dc Digital Transmission (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
PURPOSE: To ensure a high-quality recording/reproducing for the code signal by identifying once the reproduced signal waveform in the mode of the code signal different from the recording time and then restoring the signal waveform to the mode of the original code signal.
CONSTITUTION: The desired binary code signal A is formed into binary code signal B through modulo two converter 1 and then recorded. With reproduction of recorded signal B, the signal waveform is differentiated through reproduction magnetic head 7 and furthermore reproduced signal waveform C the higher band component of which is attenuated can be obtained. Signal C is then converted into ternary code signal D through equalizer 9. Signal D is then led to differential amplifier 10, and then the differential signal between the 0 level and the signal level at each bit position to be compared with the threshold level signal at comparators 12 and 13. Thus the restoration conversion is given to signal A. As a result, an accurat identification is possible for the reproduced signal, and thus the digital code signal can be reproduced with an extremely small code error rate.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9309278A JPS5522232A (en) | 1978-08-01 | 1978-08-01 | Digital magnetic recorder/reproducer |
US06/019,592 US4234898A (en) | 1978-03-15 | 1979-03-12 | Digital magnetic recording and reproducing apparatus |
GB7908785A GB2017365B (en) | 1978-03-15 | 1979-03-13 | Digital magnetic recording and reproducing apparatus |
DE19792910033 DE2910033A1 (en) | 1978-03-15 | 1979-03-14 | DIGITAL MAGNETIC RECORDING AND PLAYBACK DEVICE |
DE2954630A DE2954630C2 (en) | 1978-03-15 | 1979-03-14 | Digital magnetic recording and reproduction |
FR7906630A FR2420181B1 (en) | 1978-03-15 | 1979-03-15 | DIGITAL MAGNETIC RECORDING AND REPRODUCING APPARATUS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9309278A JPS5522232A (en) | 1978-08-01 | 1978-08-01 | Digital magnetic recorder/reproducer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5522232A true JPS5522232A (en) | 1980-02-16 |
JPS6132746B2 JPS6132746B2 (en) | 1986-07-29 |
Family
ID=14072872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9309278A Granted JPS5522232A (en) | 1978-03-15 | 1978-08-01 | Digital magnetic recorder/reproducer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5522232A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6018237A (en) * | 1983-07-08 | 1985-01-30 | Komatsu Ltd | Control circuit of transfer device |
-
1978
- 1978-08-01 JP JP9309278A patent/JPS5522232A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6018237A (en) * | 1983-07-08 | 1985-01-30 | Komatsu Ltd | Control circuit of transfer device |
JPH0150490B2 (en) * | 1983-07-08 | 1989-10-30 | Komatsu Mfg Co Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS6132746B2 (en) | 1986-07-29 |
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