Information storage device, information storage equipment and storing and reading method thereof

Abstract

The invention relates to an information storage device, information storage equipment and a storing and reading method thereof. The information storage device comprises an optical waveguide element, a protective element and a plurality of information storage elements, wherein the information storage elements are sandwiched between the optical waveguide element and the protective element; each information storage element is provided with a magnetized ferromagnetic light-transmitting material; when the magnetized ferromagnetic light-transmitting material get close to the optical waveguide element under the action of an external magnetic field and the light is transmitted out of the protective element, first information is written in or read from the information storage element; and when the magnetized ferromagnetic light-transmitting material gets away from the optical waveguide element under the action of the external magnetic field, second information is written in or read from the information storage element. The information storage device, the information storage equipment and the storing and reading method thereof of the invention realize that the information can be written and read repeatedly for infinite times and ensure high reliability for recording and reading the information.

Description

technical field [0001] The invention relates to an information storage device, an information storage device and a storage and reading method thereof, belonging to the technical field of information storage. Background technique [0002] With the continuous development of information storage technology, various storage devices are also developing rapidly. Among them, optical storage devices are widely used due to their advantages of high speed, small size and long life. Existing optical storage devices usually record information in the form of optical discs. All information recorded on the disc is digitized into "0"s and "1". "0" and "1" respectively correspond to the pits and planes on the disc, and the pits and the planes between the pits of different time lengths form a spiral track from the inside out to record information. [0003] In the prior art, there are mainly two ways of storing information, that is, forming pits and planes: laser ablation and laser irradiatio...

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Problems solved by technology

[0004] The defect in the prior art is that, for the laser ablation method, the optical storage device cannot be rewritten and recorded; while for the laser irradiation method, although the optical storage device is rewritable, the number of rewrites is limited. , and after multiple transitions between the crystalline state and the amorphous state, the lattice configuration of the phase change material will degenerate to varying degrees, resulting in a continuous decline in recordability, thereby reducing the reliability of information recording and reading

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