JPS5522232A - Digital magnetic recorder/reproducer - Google Patents

Digital magnetic recorder/reproducer

Info

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
Application number
JP9309278A
Other languages
Japanese (ja)
Other versions
JPS6132746B2 (en
Inventor
Shozo Nakagawa
Katsuya Yokoyama
Hiromoto Katayama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Broadcasting Corp
Original Assignee
Nippon Hoso Kyokai NHK
Japan Broadcasting Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Hoso Kyokai NHK, Japan Broadcasting Corp filed Critical Nippon Hoso Kyokai NHK
Priority to JP9309278A priority Critical patent/JPS5522232A/en
Priority to US06/019,592 priority patent/US4234898A/en
Priority to GB7908785A priority patent/GB2017365B/en
Priority to DE19792910033 priority patent/DE2910033A1/en
Priority to DE2954630A priority patent/DE2954630C2/en
Priority to FR7906630A priority patent/FR2420181B1/en
Publication of JPS5522232A publication Critical patent/JPS5522232A/en
Publication of JPS6132746B2 publication Critical patent/JPS6132746B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Dc Digital Transmission (AREA)
  • Signal Processing For Digital Recording And Reproducing (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
JP9309278A 1978-03-15 1978-08-01 Digital magnetic recorder/reproducer Granted JPS5522232A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018237A (en) * 1983-07-08 1985-01-30 Komatsu Ltd Control circuit of transfer device

Cited By (2)

* Cited by examiner, † Cited by third party
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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