JPS5788511A - Digital recording signal reproducing device - Google Patents

Digital recording signal reproducing device

Info

Publication number
JPS5788511A
JPS5788511A JP55166398A JP16639880A JPS5788511A JP S5788511 A JPS5788511 A JP S5788511A JP 55166398 A JP55166398 A JP 55166398A JP 16639880 A JP16639880 A JP 16639880A JP S5788511 A JPS5788511 A JP S5788511A
Authority
JP
Japan
Prior art keywords
equalizer
output
inputted
waveform
circuit
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
JP55166398A
Other languages
Japanese (ja)
Other versions
JPS6353609B2 (en
Inventor
Ichiro Ogura
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP55166398A priority Critical patent/JPS5788511A/en
Publication of JPS5788511A publication Critical patent/JPS5788511A/en
Publication of JPS6353609B2 publication Critical patent/JPS6353609B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/027—Analogue recording
    • G11B5/035—Equalising

Abstract

PURPOSE:To achieve reproduction without wave interference error and SN ratio deterioration error, by equalizing the output equalized with the 1st equalizer further with the 2nd equalizer, in reproducing recorded digital signals. CONSTITUTION:A digital signal reproduced from a magnetic tape 1 via a head 2 is amplified 3 and inputted to an equalizer 4. The output of the equalizer 4 is inputted to a differentiation device 6 and an equalizer 14 via an LPF5. The output of the device 6 is inputted to an AND gate circuit 10 via a zero cross detector 7. The output of the equalizer 14 is inputted to a voltage comparator 8 and compared with the reference voltage at an input terminal 9 and given to the circuit 10. The output of the circuit 10 activates an FF11 and the recorded waveform is restored. The waveform equalization of the equalizer 4 is suppressed lower to keep the specified S/N ratio and the input to the comparator 8 is increased for the equalization of waveform to keep high threshold level. With this constitution, accurate signal reproduction can be achieved.
JP55166398A 1980-11-22 1980-11-22 Digital recording signal reproducing device Granted JPS5788511A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55166398A JPS5788511A (en) 1980-11-22 1980-11-22 Digital recording signal reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55166398A JPS5788511A (en) 1980-11-22 1980-11-22 Digital recording signal reproducing device

Publications (2)

Publication Number Publication Date
JPS5788511A true JPS5788511A (en) 1982-06-02
JPS6353609B2 JPS6353609B2 (en) 1988-10-25

Family

ID=15830671

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55166398A Granted JPS5788511A (en) 1980-11-22 1980-11-22 Digital recording signal reproducing device

Country Status (1)

Country Link
JP (1) JPS5788511A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61233470A (en) * 1985-04-08 1986-10-17 Matsushita Electric Ind Co Ltd Optical information recording and reproducing device
JPS61233471A (en) * 1985-04-08 1986-10-17 Matsushita Electric Ind Co Ltd Optical information recording and reproducing device
JPS6262405A (en) * 1985-09-13 1987-03-19 Canon Electronics Inc Waveform shaping device
US5467232A (en) * 1992-03-24 1995-11-14 Hitachi, Ltd. Magnetic recording and reproducing method using phase discrimination and apparatus therefor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61233470A (en) * 1985-04-08 1986-10-17 Matsushita Electric Ind Co Ltd Optical information recording and reproducing device
JPS61233471A (en) * 1985-04-08 1986-10-17 Matsushita Electric Ind Co Ltd Optical information recording and reproducing device
JPS6262405A (en) * 1985-09-13 1987-03-19 Canon Electronics Inc Waveform shaping device
US5467232A (en) * 1992-03-24 1995-11-14 Hitachi, Ltd. Magnetic recording and reproducing method using phase discrimination and apparatus therefor

Also Published As

Publication number Publication date
JPS6353609B2 (en) 1988-10-25

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