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Modular optical-magnetic mixed storage medium dynamic testing system

A hybrid storage and dynamic testing technology, applied in information storage, recording information storage, combined recording, etc., can solve the problems of low readout resolution and sensitivity, and achieve the effects of improving versatility, speeding up development, and increasing recording density.

Inactive Publication Date: 2006-03-15
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0007] The problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a dynamic testing system for modularized optical-magnetic hybrid storage media, which can overcome the problems of low readout resolution and sensitivity in magneto-optical storage systems; High rotation accuracy, no track tracking, high recording density, can be used for static testing, easy maintenance, etc.

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with drawings and embodiments.

[0035] see first figure 1 , figure 1 It is a schematic diagram of the optical path of the embodiment of the present invention. It can be seen from the figure that the modular optical-magnetic hybrid storage medium dynamic testing system of the present invention consists of a laser modulation module 1, a bias module 2, a spindle motor module 3, a focus servo module 4, a magnetic head readout module 5, and radial piezoelectric ceramics Driven nano platform 6, observation microscope module 7 and system control module 8 constitute:

[0036] The laser modulation module 1 includes a laser 101, a first lens 1031, an AOM 102, a second lens 1032, a small hole 104, a beam expander 105, a high numerical aperture objective lens 106, an AOM controller 107 and The signal generator 108 has a positional relationship such that a first lens 1031 and an acousto-optic modulator 102 are ...

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Abstract

A dynamically testing system of light-magnetism mixed modularization storage media comprises laser modulation module, magnetic biasing module, main axis motor module, focusing servo module, magnetic head reading out module, nanoplatform driven by radial piezoelectric ceramic, observing microscopic module and system control module. The system can be used for both of dynamic test and static tests.

Description

technical field [0001] The invention relates to a storage medium, in particular to a dynamic testing system for a modular optical-magnetic hybrid storage medium. It is mainly used in the dynamic test of recording, erasing and reading performance of optical-magnetic hybrid storage media, and can also be used for small tests of storage characteristics of ordinary optical storage media or super-resolution optical storage media such as read-only, write-once, erasable and rewritable, etc. Sample quasi-dynamic testing. Background technique [0002] Hybrid storage combines the advantages of magnetic storage and magneto-optical storage. The recording uses magneto-optical storage to reduce the number of recorded information bits, and the readout uses magnetic storage to improve the signal-to-noise ratio, which overcomes the bottleneck of the two and greatly improves storage density. To study the perpendicular magnetization storage materials and media suitable for blue-violet mixed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B11/00G11B7/00G11B20/00
Inventor 朱青徐文东高秀敏戴珂张锋杨金涛
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI