发明名称 |
Magneto-optical data recording apparatus using a sample-servo system for applying heating pulses to record data |
摘要 |
A magneto-optical data recording system comprises magnetic field pulse applying apparatus for applying to a magneto-optic recording medium a magnetic field pulse of a polarity corresponding to code data to be recorded, and apparatus for heating the recording medium in a pulsating manner at a predetermined frequency synchronous with the code data to be recorded. During recording, the magnetic field pulse applying apparatus applies a magnetic field pulse of a polarity corresponding to code data along a track of the recording medium and the heating apparatus continuously heats the recording medium in a pulsating manner at a predetermined frequency synchronous with the code data to thereby directly overwrite the code data. The magnetic field pulse applying apparatus includes a magnetic coil driven by code data from a source of code data (data generator). The heating apparatus includes an optical head which comprises a source of laser beam driven by a laser driver and an optical system which focuses the laser beam from the source of laser beam as a small light spot onto the recording medium.
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申请公布号 |
US5579292(A) |
申请公布日期 |
1996.11.26 |
申请号 |
US19950429008 |
申请日期 |
1995.04.26 |
申请人 |
HITACHI, LTD. |
发明人 |
YONEZAWA, SEIJI;OHTA, NORIO;NIIHARA, TOSHIO;KATAOKA, KEIJI;TAKAHASHI, MASAHIKO;MIYAMOTO, HARUKAZU;SUKEDA, HIROFUMI;TSUYOSHI, TOSHIAKI |
分类号 |
G11B20/10;G11B5/02;G11B7/006;G11B7/007;G11B11/10;G11B11/105;G11B27/19;G11B27/30;(IPC1-7):G11B11/00 |
主分类号 |
G11B20/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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