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JPS57208613A - Magnetic recorder and reproducer - Google Patents

Magnetic recorder and reproducer

Info

Publication number
JPS57208613A
JPS57208613A JP9202281A JP9202281A JPS57208613A JP S57208613 A JPS57208613 A JP S57208613A JP 9202281 A JP9202281 A JP 9202281A JP 9202281 A JP9202281 A JP 9202281A JP S57208613 A JPS57208613 A JP S57208613A
Authority
JP
Japan
Prior art keywords
bit
data
reproduced
level
invalid
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
JP9202281A
Other languages
Japanese (ja)
Other versions
JPH0458671B2 (en
Inventor
Muneo Saito
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.)
Denso Corp
Original Assignee
NipponDenso 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 NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP9202281A priority Critical patent/JPS57208613A/en
Publication of JPS57208613A publication Critical patent/JPS57208613A/en
Publication of JPH0458671B2 publication Critical patent/JPH0458671B2/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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/02—Analogue recording or reproducing
    • G11B20/025—Error detection or correction

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE:To prevent the reading error of a data in an easy and assured way, by comparing at least >=1 set of analog information among the read-out data bit trains with the reference value and deciding the validity or invalidity of the bit train signal. CONSTITUTION:The level absolute value of the analog information in the reproduced data bit train that passes through a magnetic-electric converting part 31 and the absolute value of the bit interval are compared with the reference value respectively through a level deciding part 35 and a bit interval deciding part 36. As a result, the validity or invalidity is decided for the reproduced bit train. The parts 35 and 36 deliver the high-level invalid signals in the invalid mode in the form of the error signals. Then an AND gate 38 is controlled to cut off the output of the reproduced signal corresponding to the invalid bit train signal. As a result, no fault data is reproduced and delivered, and accordingly the reading error of the data is assuredly avoided although no parity check is carried out.
JP9202281A 1981-06-15 1981-06-15 Magnetic recorder and reproducer Granted JPS57208613A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9202281A JPS57208613A (en) 1981-06-15 1981-06-15 Magnetic recorder and reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9202281A JPS57208613A (en) 1981-06-15 1981-06-15 Magnetic recorder and reproducer

Publications (2)

Publication Number Publication Date
JPS57208613A true JPS57208613A (en) 1982-12-21
JPH0458671B2 JPH0458671B2 (en) 1992-09-18

Family

ID=14042904

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9202281A Granted JPS57208613A (en) 1981-06-15 1981-06-15 Magnetic recorder and reproducer

Country Status (1)

Country Link
JP (1) JPS57208613A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62110175A (en) * 1985-11-08 1987-05-21 Hitachi Ltd Recording medium defect detection method and defect detection device
JPH0223577A (en) * 1988-07-11 1990-01-25 Mitsumi Electric Co Ltd Magnetic recording and reproducing device
JPH03144969A (en) * 1989-10-31 1991-06-20 Internatl Business Mach Corp <Ibm> Method and apparatus for determining data error ratio

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4946705A (en) * 1972-09-09 1974-05-04
JPS5634117A (en) * 1979-08-28 1981-04-06 Nippon Telegr & Teleph Corp <Ntt> Detection system of error position

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4946705A (en) * 1972-09-09 1974-05-04
JPS5634117A (en) * 1979-08-28 1981-04-06 Nippon Telegr & Teleph Corp <Ntt> Detection system of error position

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62110175A (en) * 1985-11-08 1987-05-21 Hitachi Ltd Recording medium defect detection method and defect detection device
JPH0223577A (en) * 1988-07-11 1990-01-25 Mitsumi Electric Co Ltd Magnetic recording and reproducing device
JPH03144969A (en) * 1989-10-31 1991-06-20 Internatl Business Mach Corp <Ibm> Method and apparatus for determining data error ratio

Also Published As

Publication number Publication date
JPH0458671B2 (en) 1992-09-18

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