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Optical disc read-write method based on nano photoetching and inscribing control information encoding and decoding method

A nano-lithography and writing control technology, applied in the field of optics, can solve problems hindering the development of optical disc technology

Active Publication Date: 2020-05-26
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For optical disc technology, the limitation of storage capacity seriously hinders the development of optical disc technology.

Method used

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  • Optical disc read-write method based on nano photoetching and inscribing control information encoding and decoding method
  • Optical disc read-write method based on nano photoetching and inscribing control information encoding and decoding method
  • Optical disc read-write method based on nano photoetching and inscribing control information encoding and decoding method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0053] Such as Figure 1A As shown, an optical disc physical storage medium is shown, and its structure includes:

[0054] 1) protective layer 101, which enables the optical disc to withstand frequent use, fingerprints, scratches and dirt, thereby ensuring the storage quality and data security of the optical disc;

[0055] 2) The recording layer 102 is used for writing and recording information. This layer is characterized by stable storage and optical writing. The selected materials include SiO 2 , GaF 2 , MgF 2 , plexiglass, photosensitive materials, etc., but not limited to these;

[0056] 3) The reflective layer 103 is used to increase the spectral reflectance and facilitate the reflection measurement of spectral information. It adopts materials with high reflectivity, mainly including metal materials or multi-layer distributed Bragg reflector (DBR) materials, but not limited to these .

[0057] By using shorter wavelength writing laser beams (semiconductor lasers with...

no. 2 example

[0059] Such as Figure 1B As shown, an optical disc physical storage medium is shown, and its structure includes:

[0060] 1) protective layer 201, which enables the optical disc to withstand frequent use, fingerprints, scratches and dirt, thereby ensuring the storage quality and data security of the optical disc;

[0061] 2) Absorption modulation layer 202, the material of this layer has absorption modulation characteristics, and its absorption spectrum has the following characteristics: Figure 1C According to the features shown, the thickness of the layer is less than 500nm, and the material of the absorption modulation layer includes diarylethene, fulginic anhydride, and azide materials, but is not limited to these;

[0062] 3) The recording layer 203 is used for writing and recording information. This layer is characterized by stable storage and optical writing. The selected materials include SiO 2 , GaF 2 , MgF 2 , plexiglass, photosensitive materials, etc., but not ...

no. 3 example

[0068] refer to Figure 1D , the resolution of the spectrum determines the number of bits of coded information. In order to increase the resolution of reflection spectrum measurement, this embodiment is based on the first embodiment and the second embodiment, by between the recording layer 102 and the reflection layer 103 or One or more intermediate layers are added between the recording layer 203 and the reflective layer 204, thereby providing an optical disk physical storage medium. In detail, its structure includes:

[0069] 1) The recording layer 303 is used to write and record information. This layer is characterized by stable storage and optical writing. The selected materials include SiO 2 , GaF 2 , MgF 2 , plexiglass, photosensitive materials, etc., but not limited to these;

[0070] 2) The middle layer 304 is a material with a high refractive index, the refractive index is greater than that of the material of the recording layer 303, and the spectral absorptivity i...

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Abstract

The invention provides an optical disc writing method and device based on nano photoetching, an optical disc reading method and device based on nano photoetching, an optical disc read-write device based on nano photoetching, an encoding method of inscribing control information, a decoding method of the inscribing control information and a method for decoding digital storage information from a reflection spectrum. According to the technical scheme, the optical disc information reading rate and the resolution capability can be effectively improved, and the storage density and the storage dimension of the optical disc are greatly improved.

Description

technical field [0001] The present invention relates to the field of optical technology, in particular to a method and device for writing optical discs based on nanolithography, a method and device for reading optical discs based on nanolithography, a device for reading and writing optical discs based on nanolithography, and encoding of writing control information A method, a decoding method for writing control information, and a method for decoding digitally stored information from reflection spectra. Background technique [0002] With the development of technologies such as gene sequencing and brain activity reading, not only a large amount of data is generated, but also higher requirements are put forward for how to store the data effectively, stably and accurately. Based on the above-mentioned background, the optical disk storage technology has well adapted to the requirements of the times due to its advantages of energy saving, long storage life, good safety and easy pr...

Claims

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Application Information

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IPC IPC(8): G11B7/09
CPCG11B7/0908
Inventor 王中阳张力孙静高琪
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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