JPS5750306A - Magnetic recording and reproducing system - Google Patents

Magnetic recording and reproducing system

Info

Publication number
JPS5750306A
JPS5750306A JP12631780A JP12631780A JPS5750306A JP S5750306 A JPS5750306 A JP S5750306A JP 12631780 A JP12631780 A JP 12631780A JP 12631780 A JP12631780 A JP 12631780A JP S5750306 A JPS5750306 A JP S5750306A
Authority
JP
Japan
Prior art keywords
recording
frequency
signal
reproducing
analogue
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
JP12631780A
Other languages
Japanese (ja)
Inventor
Kazutake Yamamori
Tatsuo Fujiwara
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12631780A priority Critical patent/JPS5750306A/en
Publication of JPS5750306A publication Critical patent/JPS5750306A/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
    • G11B20/02—Analogue recording or reproducing
    • G11B20/08—Pulse-modulation recording or reproducing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Magnetic Heads (AREA)

Abstract

PURPOSE:To make recording and reproducing of a good linearity possible, by subjecting an analogue frequency to both-edge pulse modulation by the carrier wave of a frequency higher than its frequency band and by recording it onto a recording medium in vertical magnetization. CONSTITUTION:An analogue input signal is supplied to a both-edge PWM modulator 2 through an amplifier 1 and is subjected to both-edge pulse modulation by the carrier wave of a frequency higher than the frequency of the input signal. A magnetic head 5 to which this modulated signal is given converts the signal to a recording magnetic field of an amplitude larger than that of its magnetization inverting magnetic field and recording it onto a recording medium 4, which has a rectangular hysteresis characteristic, in vertical mangetization. Next, this recording medium 4 is reproduced by a reproducing head 6 which has characteristics of a high sensitivity for input signal frequency components and of a low sensitivity for carrier frequency components. Thus, analogue signal recording and reproducing of a good linearity is performed.
JP12631780A 1980-09-11 1980-09-11 Magnetic recording and reproducing system Pending JPS5750306A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12631780A JPS5750306A (en) 1980-09-11 1980-09-11 Magnetic recording and reproducing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12631780A JPS5750306A (en) 1980-09-11 1980-09-11 Magnetic recording and reproducing system

Publications (1)

Publication Number Publication Date
JPS5750306A true JPS5750306A (en) 1982-03-24

Family

ID=14932188

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12631780A Pending JPS5750306A (en) 1980-09-11 1980-09-11 Magnetic recording and reproducing system

Country Status (1)

Country Link
JP (1) JPS5750306A (en)

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