Optical storage method utilizing light variation image

An optical and image technology, applied in the field of optical storage, can solve the problems of large variation range, high signal-to-noise ratio storage density, increased background noise, etc.

Inactive Publication Date: 2002-12-18
湖北强大包装实业有限公司
View PDF1 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The storage capacity of this method is proportional to the reciprocal of the cube of the recording wavelength, and the theoretical storage density can reach 10 13 bits / cm 3 , however, the two beams of light after beam splitting, the object light provides information input, and the reference light provides reference interference, so there are the following disadvantages: 1. The change range of the object light intensity is very large, and it is difficult to obtain uniformity in the recording area. 2. In the non-overlapping area of ​​the two beams of light, the reference light is still exposed to the recording material, which increases the background noise. Therefore, this method is used for high-density storage , the signal-to-noise ratio of the stored image will decrease significantly with the increase of the stored image, and it is difficult to obtain a higher storage density with a high signal-to-noise ratio in practice
However, in addition to the image information expressed macroscopically, the information carrying capacity of this optically variable image is limited, and it does not have the function of carrying a large amount of information.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Optical storage method utilizing light variation image
  • Optical storage method utilizing light variation image
  • Optical storage method utilizing light variation image

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment one: see attached image 3 to attach Figure 5 As shown, an optical storage method utilizing optically variable images, comprising the following steps:

[0036] (1) Use the set encoding method to generate graphics, text or data sequences for the stored information;

[0037] (2) According to the characteristics of the optically variable image, arrange the image-text sequence generated in step (1) into an optically variable image-text, wherein the optically variable image is composed of an array of grating units, and each grating unit is composed of a fine graphic , text or data bits, the size of the grating unit is not greater than 160 microns;

[0038] (3) The optically variable image and text obtained in step (2) is stored on the recording material by using the optically variable image typesetting system.

[0039] Wherein, the optically variable image typesetting system includes a laser 1, a photoelectric switch 2, a beam expander 3, a spatial light modul...

Embodiment 2

[0048] Embodiment 2: The optically variable image obtained by the method of Embodiment 1 is stored, and each unit point of the storage type optically variable image is arranged according to certain rules. At the same time, the orientation of the interference fringes, the structure or shape of the unit point image Combination, the storage type optical variable graphics has the function of coding and information encryption, see the attached Figure 7-8 . The technologies used for 2D encoding (such as DatMatix, PDF417, MAXCode, etc.) can be applied to optical variable storage, combining encoding and optical variable storage. Here, the storage encoding of optically variable graphics has more encoding parameters (position, x, y, grating orientation and grating line interval), and therefore has more flexible encoding processing capabilities.

Embodiment 4

[0049] Embodiment 4 Application of mosaic optically variable image and text storage on bronzing and packaging materials

[0050] For the laser image on hot stamping, usually, the area of ​​hot stamping is small, if there is text on the hot stamping image, then the size of the text should be above 0.5mm. This method utilizes the characteristic of the large information capacity stored in the mosaic optically variable image and text, and stores fine optically variable image and text at the local position of the laser image, for example, the size of the text is less than 0.16mm. See Figure 10 . Therefore, important information of commodities can be stored in a small area (such as 2mm×2mm), which can be checked.

[0051] Similarly, the storage type optical variable image is a very good detection type anti-counterfeiting packaging material. In a part of the packaging material, information about the product is stored, which can be used for invisible encryption, which is convenien...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
sizeaaaaaaaaaa
Login to view more

Abstract

There is an optical storage method taking advantage of light-changing graph, its characters lies in that it incldues steps as follows: (1) it changes stored information into graph, word or data list with given coding mode; (2) according to the characters of light-changing graph, it arranges the graph and word list in step (1) into light-changing graph and word. Hereinto, so called light-changing graph is made up of grating unit array, each grating unit is made of elaborate graph, word or data bit and the scale of grating unit is no more than 160 micron; (3) it storages the light-changing graph acquired from step (2) to recording material by light-changing graph copy-arrangement system. Technical scheme of the invention realizes high information-density light-changing's stored light-carving of the random digital graph and word.

Description

technical field [0001] The invention relates to a storage method, in particular to an optical storage method realized by using optically variable images. Background technique [0002] The main physical meaning of the so-called optical storage is to record and save a large amount of information that can be read out on the storage material by using the optical properties of the storage material in a small space of the storage material. The main method of existing optical storage is to place the input image or text on the front focal plane of the Fourier lens through the method of Fourier transform on the volume material, and record the input image by interference on the back focal plane. The Fourier transform map of , in a very small volume type recording material (such as photorefractive cubic crystal), for high information density storage. Chinese invention patent application CN1274915A discloses a fixed three-dimensional photonic storage device, inclu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G03H1/04G06T15/00G11B7/00
Inventor 陈林森解剑锋汪振华沈雁陆志伟周望胡元孙菁
Owner 湖北强大包装实业有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap