10 results about "Digital paper" patented technology

The invention discloses a handwritten electronic signature method and system based on multi-modal biological characteristics. The method comprises the following steps: carrying out real-name authentication on a signer before signing an electronic file; if the real-name authentication is passed, biological characteristic verification and evidence storage are carried out; recording handwriting data after biological feature verification is passed and signing is completed, and forming a data packet; the signed electronic file is printed into digital paper, the data packet is embedded into a digital paper file structure, and the digital paper is a layout file simulating real paper. According to the invention, the problem that the signature of the existing signer cannot represent the real identity and needs to depend on the CA certificate is solved, the tedious processes of applying, issuing, managing and the like for the CA certificate are avoided, and the online signature and the offline signature have the same efficacy.

This invention provides a method, apparatus, and distribution system for generating digital paper. The method includes: obtaining a digest value of the digital paper based on its production serial number, or based on terminal identification information and a customer dynamic password; determining first distribution feature data of the anti-counterfeiting fiber corresponding to the digest value based on the mapping relationship between each character in the digest value and an anti-counterfeiting fiber distribution feature table; superimposing the anti-counterfeiting fiber and the paper-forming fiber into digital paper based on the first distribution feature data and preset second distribution feature data of the paper-forming fiber; generating a corresponding CA certificate based on the feature data of the digital paper and a private key from an authoritative institution; and sending the CA certificate and the digital paper together to a receiving end. Applying this invention can prevent the counterfeiting of digital paper.

The application provides a high-performance digital paper making method, which comprises the following steps: mixing sulfate needle wood pulp, bleached sulfate broadleaf wood pulp and alkaline peroxide mechanical pulp into pulp mixture liquid, then adding modified ground calcium carbonate and positive starch into the pulp mixture liquid and fully mixing to obtain raw paper pulp to produce raw paper, performing surface sizing on the raw paper, performing coating by using film transfer double-sided coating, performing calendering to modify the paper surface, and finally performing coating by using a treatment liquid, so that the high-performance digital paper is obtained. By combining the modified calcium carbonate, the starch glue liquid, the reasonable coating raw material ratio and the suitable treatment liquid, the performance of the paper can be enhanced, the digital paper can quickly absorb the water-based ink, the ink adhesion is strong, and the color restoration is strong. In addition, the high-performance digital paper developed by the application can replace the solvent type ink with the water-based ink, so that the pollution of the organic solvent to the environment can be avoided, and the development trend of the world green environmental protection can be adapted.

The invention discloses a document image watermark adding and tampering detection method based on Chebyshev and Arnold. The watermark adding method comprises the following steps: converting a digital paper file into an image file; performing Arnold transformation on the image to obtain a scrambled image xi; converting the image xi into a Ycbcr color space, and extracting a Y channel; two-dimensional Chebyshev transformation is carried out on the Y channel; keeping coefficients greater than a set threshold value mu, and setting the rest coefficients to be zero; performing Chebyshev inverse transformation on the processed Y channel, replacing the processed Y channel into a Y channel in a Ycbcr space, converting the Y channel back to an image, and performing Arnold inverse transformation; and performing Chebyshev inverse transformation on the part of which the coefficient is smaller than a set threshold value mu, and forming encrypted global summary information by extracting noise level features. According to the method, the image storage overhead is hardly increased after the watermark is embedded, and the storage smaller than the original file in size can be obtained under partial conditions, so that the storage and transmission cost is effectively reduced.

According to the technical scheme, the origami representation method combined with the digital origami system comprises the steps that S1, a preset folding point of an origami model is constructed on origami based on the origami model, and the preset folding point is any one or combination of an intersection point, an end point, a centroid, a centroid or an angular point of crease lines of the origami model on a crease graph; s2, writing the folding point information of the preset folding point into the folding mark identification model; s3, preset folding points on the entity folded paper with the preset folding points and folding lines between the preset folding points are recognized in real time through the folded paper recognition model, wherein the folding lines in different forms represent different paper folding modes; and S4, constructing or updating a digital origami model based on the identified preset folding points and folding lines, and synchronizing the digital origami model in a digital origami system for origami simulation.

The application relates to the technical field of decorative material production, and discloses a production process of novel digital decorative paper, which comprises the following steps: a. selecting wear-resistant paper and base paper; b. printing a digital pattern on the surface of the digital base paper through a digital printing device; and c. performing life cultivation on the paper formed after printing; a production process of a veneer, which comprises the following steps: S1. selecting raw materials; S2. slicing; S3. drying; S4. gluing; S5. paving; S6. pressing and pasting; S7. life cultivation; S8. sanding; S9. cutting; and S10. warehousing. The production process of the novel digital decorative paper and the veneer guarantees better veneering effect of the digital decorative board, guarantees better dry pressing effect of the digital decorative paper, can accelerate the penetration of printing ink into the base paper, controls the water content of the digital paper, improves the pressing and pasting effect and pressing and pasting loss in the later period, adds a life cultivation process of the digital decorative paper, the printing ink is fully combined with the base paper after the digital decorative paper is life cultivated for four days, and the phenomena of surface bubbles and delamination after veneering are solved.

The invention provides a digital pen and a system and method for using the digital pen. The digital pen includes a nib having two tines made of a flexible material defining a slit, wherein its slit width varies according to pressure applied to the nib and / or the orientation of the digital pen relative to the writing surface. The digital pen further includes a sensor module configured to measure the variable slit width; an orientation detection module configured to determine a position and tilt of the pen relative to the writing surface; and a communication module configured to transmit the slit width data and / or orientation data to a connected computing device. The computing device utilizes the slit width data and the orientation data to dynamically control the amount of digital ink dispensed onto the digital paper to simulate the writing experience and ink output of the stationery pen.

The invention discloses an emergency equipment health state monitoring and early warning method and device based on data analysis, and the method comprises the steps: starting a multispectral imaging system according to the archive age and material characteristics, and synthesizing multi-channel information into a high-fidelity digital image through a spectrum fusion algorithm; carrying out character detection on the scanned image according to the CRNN neural network model, and carrying out correction and enhancement on characters; generating a bar code according to the data of the archive; generating a self-adaptive watermark according to the archive image; storing the aggregated multi-dimensional hash value according to the block chain; and the consistency of the block chain evidence and the local data is verified, the authenticity of the evidence is verified, and the security of the digital paper archive is ensured. Through multi-dimensional hash value aggregation and timestamp binding, existence, integrity and sequential proof of strong legal efficacy is provided for electronic archives.

The invention discloses an anti-counterfeiting traceability method, equipment and system based on paper grain characteristics. The method mainly comprises a paper grain characteristic digital extraction method, a digital paper grain characteristic evidence storage method, a paper grain characteristic verification method and corresponding carrier equipment and system. According to the invention, anti-counterfeiting traceability is realized by utilizing the physical uniqueness of the paper grain features, and a more reliable and efficient solution is provided for commodity anti-counterfeiting.

This invention relates to a digital paper tube for chemical fiber filament cakes and its preparation method. The invention includes an inner layer, formed by winding a tough paper-based material; a chip layer, comprising an RFID chip and an antenna electrically connected to the RFID chip; wherein the RFID chip is covered with a waterproof protective layer and pre-pressed onto the outer surface of the inner layer under a preset pressure; the antenna is spiral or annular and extends circumferentially with the inner layer, and its length matches the operating frequency of the RFID chip; a middle layer, wound and bonded to the outer surface of the inner layer with adhesive; an outer layer, bonded to the outer surface of the middle layer with adhesive; and a protective layer, including a flame-retardant layer on the outer surface of the outer layer and a thin film layer on the outer surface of the flame-retardant layer. By integrating the RFID chip inside the paper tube, not only is the problem of tag damage solved, but also automatic data collection throughout the entire process from spinning, warehousing to logistics can be achieved, significantly improving supply chain management efficiency.