JPS5525881A - Signal recording method for magnetic recording medium - Google Patents
Signal recording method for magnetic recording mediumInfo
- 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
Links
Landscapes
- 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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4599714A (en) * | 1982-05-21 | 1986-07-08 | Canon Kabushiki Kaisha | Photo-magnetic reproducing apparatus |
-
1978
- 1978-08-15 JP JP9929278A patent/JPS5525881A/en active Pending
Cited By (1)
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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