JPS5525811A - Signal recording method for magnetic recording medium - Google Patents
Signal recording method for magnetic recording mediumInfo
- 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
Links
Landscapes
- 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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04222538A (en) * | 1990-12-25 | 1992-08-12 | Taiwa Kogyo Kk | Horseshoe and production thereof |
-
1978
- 1978-08-08 JP JP9649178A patent/JPS5525811A/en active Pending
Cited By (1)
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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