JPS5525881A - Signal recording method for magnetic recording medium - Google Patents

Signal recording method for magnetic recording medium

Info

Publication number
JPS5525881A
JPS5525881A JP9929278A JP9929278A JPS5525881A JP S5525881 A JPS5525881 A JP S5525881A JP 9929278 A JP9929278 A JP 9929278A JP 9929278 A JP9929278 A JP 9929278A JP S5525881 A JPS5525881 A JP S5525881A
Authority
JP
Japan
Prior art keywords
magnetic
wavelength
domain
film
signal
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
JP9929278A
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 JP9929278A priority Critical patent/JPS5525881A/en
Publication of JPS5525881A publication Critical patent/JPS5525881A/en
Pending legal-status Critical Current

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  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE: To improve the S/N ratio of a read-out signal by making use of photomagnetic effect by recording continuously signals on alternate long wavelength and short wavelength signal tracks of a magnetic recording medium.
CONSTITUTION: Vertical and easy magnetization film unit 2 for a soft magnetic film comes in contact with magnetic tape 1 moving in the arrow direction. Light emitted by light-source generator 3 is passed through polarizer 4, beam splitter 5 and object lens 6 and then focused on the magnetized film of unit 2, where it is reflected before being supplied to analyzer 7 by way of lens 6 splitter 5. During this, the light is under the influence of Faraday optical action according to the magnetization direction of the domain of the magnetized film. At this time, a long-wavelength magnetic domain generated stabilizes the short-wavelength magnetic domain easily disturbed by the run of tape 1 on the magnetized film, a photo modulated signal whose width has been modulated accoring to the domain width is supplied to photoelectric converting element 8 and from its output terminal 9, an electric signal is outputted and then regenerated by FM regenerator.
COPYRIGHT: (C)1980,JPO&Japio
JP9929278A 1978-08-15 1978-08-15 Signal recording method for magnetic recording medium Pending JPS5525881A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9929278A JPS5525881A (en) 1978-08-15 1978-08-15 Signal recording method for magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9929278A JPS5525881A (en) 1978-08-15 1978-08-15 Signal recording method for magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5525881A true JPS5525881A (en) 1980-02-23

Family

ID=14243557

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9929278A Pending JPS5525881A (en) 1978-08-15 1978-08-15 Signal recording method for magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5525881A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4599714A (en) * 1982-05-21 1986-07-08 Canon Kabushiki Kaisha Photo-magnetic reproducing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4599714A (en) * 1982-05-21 1986-07-08 Canon Kabushiki Kaisha Photo-magnetic reproducing apparatus

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