JPS5782218A - Signal recording and reproducing system - Google Patents

Signal recording and reproducing system

Info

Publication number
JPS5782218A
JPS5782218A JP55158036A JP15803680A JPS5782218A JP S5782218 A JPS5782218 A JP S5782218A JP 55158036 A JP55158036 A JP 55158036A JP 15803680 A JP15803680 A JP 15803680A JP S5782218 A JPS5782218 A JP S5782218A
Authority
JP
Japan
Prior art keywords
bits
signal
reproduction
level
outputted
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
Application number
JP55158036A
Other languages
Japanese (ja)
Inventor
Taiji Shimeki
Koji Matsushima
Shiro Tsuji
Nobuyoshi Kihara
Misao Kato
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 JP55158036A priority Critical patent/JPS5782218A/en
Publication of JPS5782218A publication Critical patent/JPS5782218A/en
Pending 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
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1806—Pulse code modulation systems for audio signals
    • G11B20/1813—Pulse code modulation systems for audio signals by adding special bits or symbols to the coded information

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

PURPOSE:To pick up clock information from a reproduction signal, by combining the clock information pickup technology when the level inverting interval of reproduction pulse waves is definite with the nature of a digital signal converted from an analog signal. CONSTITUTION:An input analog signal is AD-converted 1 into a digital signal in 16-bit. The level degradation circuit 2 makes code conversion indicating adjacent level that the least significant bit is zero and other bits are 1 when all the bits are 1, and the least significant bit 1 and other bits are 0 when all the bits are 0, and an error detection/correction code is added 3 and a synchronizing signal is added 4. A signal with level inversion is formed when the bits are 1 by a modulation circuit 5 and it is outputted to a recording head 7 via a recording amplifier 6. At reproduction, a synchronizing signal pattern is detected at a synchronizing signal separation circuit 13 after clock reproduction 11 and demodulation 12 and outputted through an error detection/correction 14.
JP55158036A 1980-11-10 1980-11-10 Signal recording and reproducing system Pending JPS5782218A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55158036A JPS5782218A (en) 1980-11-10 1980-11-10 Signal recording and reproducing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55158036A JPS5782218A (en) 1980-11-10 1980-11-10 Signal recording and reproducing system

Publications (1)

Publication Number Publication Date
JPS5782218A true JPS5782218A (en) 1982-05-22

Family

ID=15662866

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55158036A Pending JPS5782218A (en) 1980-11-10 1980-11-10 Signal recording and reproducing system

Country Status (1)

Country Link
JP (1) JPS5782218A (en)

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