JPS5525811A - Signal recording method for magnetic recording medium - Google Patents

Signal recording method for magnetic recording medium

Info

Publication number
JPS5525811A
JPS5525811A JP9649178A JP9649178A JPS5525811A JP S5525811 A JPS5525811 A JP S5525811A JP 9649178 A JP9649178 A JP 9649178A JP 9649178 A JP9649178 A JP 9649178A JP S5525811 A JPS5525811 A JP S5525811A
Authority
JP
Japan
Prior art keywords
magnetic
film
light
domain
tape
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
JP9649178A
Other languages
Japanese (ja)
Inventor
Masami Himuro
Toshiro Yamada
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP9649178A priority Critical patent/JPS5525811A/en
Publication of JPS5525811A publication Critical patent/JPS5525811A/en
Pending legal-status Critical Current

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  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE: To improve the disturbance of the signal magnetic domain for the magnetic regenerated signal using the photomagnetic effect by recording the signals after applying the specific DC magnetic field vertically to the magnetic recording medium.
CONSTITUTION: Magnetic tape 1 receives the vertical DC magnetic field of more than the anti-magnetism force Hc of the magnetic powder of the tape itself. Soft magnetic film surface vertical easy-to-magnetize film device 2 is installed at the position touching tape 1 running in the direction of the arrow markings. Thus the light generated from light source generator 3 is condensed on the magnetized film of device 2 via polarizer 4, beam splitter 5 and object lens 6 each and then reflected by the reflecting film to be supplied to light detector 7 via lens 6 and splitter 5. During this, the light receives the right or left Faraday optical rotation in accordance to the magnetizing direction of the domain of the magnetized film. As a result, the light modulated signal received the width modulation according to the domain width is supplied to photoelectric converter 8, and the electric signal obtained at the output terminal 9 of element 8 is regenerated through the FM regenerator.
COPYRIGHT: (C)1980,JPO&Japio
JP9649178A 1978-08-08 1978-08-08 Signal recording method for magnetic recording medium Pending JPS5525811A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9649178A JPS5525811A (en) 1978-08-08 1978-08-08 Signal recording method for magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9649178A JPS5525811A (en) 1978-08-08 1978-08-08 Signal recording method for magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5525811A true JPS5525811A (en) 1980-02-23

Family

ID=14166541

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9649178A Pending JPS5525811A (en) 1978-08-08 1978-08-08 Signal recording method for magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5525811A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04222538A (en) * 1990-12-25 1992-08-12 Taiwa Kogyo Kk Horseshoe and production thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04222538A (en) * 1990-12-25 1992-08-12 Taiwa Kogyo Kk Horseshoe and production thereof

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