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30results about How to "With privacy protection" patented technology

Digital forensic method based on blockchain privacy protection and fine-grained access control

ActiveCN111327597AGuaranteed legalityPrevent abuse of powerTransmissionBlockchainPrivacy protection
The invention discloses a digital forensic method based on blockchain privacy protection and fine-grained access control, comprising the following steps: a first supervisor creates a digital forensictransaction, initiates a digital forensic transaction request to a second supervisor, and transmits important information of the digital forensic transaction to the second supervisor; the second supervisor generates an attribute encryption intermediate parameter through an encryption module, and authorizes and publishes the attribute encryption intermediate parameter in the blockchain; after obtaining authorization, the first supervisor obtains the fragmentation secret key from the secret key management mechanism module through authorization information and combines the fragmentation secret key to generate a decryption secret key, and the data collection module collects data in the storage system through the decryption secret key; the first supervisor analyzes the data after acquiring thedata to obtain a data analysis result; an evidence obtaining digital report is generated, and evidence obtaining is completed; according to the invention, the potential of the block chain and the intelligent contract is utilized, and the encryption primitive is designed to construct the Internet of Vehicles digital evidence obtaining scheme based on the block chain, and the scheme has auditability, privacy protection and fine-grained data access control.
Owner:JINAN UNIVERSITY

A luminous-effect-adjustable vehicle sunroof assembly

The invention relates to the technical field of luminous vehicle sunroofs, and in particular provides a luminous-effect-adjustable vehicle sunroof assembly comprising double-layer compound glass and a linear light source fixed to a side edge of the double-layer compound glass, wherein the double-layer compound glass is hollow glass or vacuum glass and comprises upper-layer glass, an enclosed cavity and a TFT liquid crystal display screen which are arranged from top to bottom successively. The TFT liquid crystal display screen comprises a first transparent substrate, a first transparent conducting layer, a liquid crystal layer, a second transparent conducting layer and lower-layer glass, which are laminated from top to bottom successively. The upper surface of the first transparent conducting layer or the lower surface of the second transparent conducting layer is provided with a thin film transistor. The luminous-effect-adjustable vehicle sunroof assembly has multiple pattern display states and has such functions as dimming, thermal insulation and privacy protection, with the light being uniform and soft.
Owner:FUYAO GLASS IND GROUP CO LTD

Preparation method of intelligent window

The invention provides a preparation method of an intelligent window. The intelligent window comprises an intelligent window based on a passive matrix organic light emitting diode and an intelligent window based on an active matrix organic light emitting diode. The preparation method includes a positive pole deposition step, a substrate pattern making step, an organic material evaporation step, an electron injection layer making step, a negative pole deposition step, a protective layer making step, a flattening layer and liquid crystal scanning electrode making step, a liquid crystal control unit making step, a liquid crystal pouring step and a packaging step. The space between a transparent OLED (organic light emitting diode) negative pole and a rear cover is filled with specific liquid crystal materials, total reflection loss of a light-exiting surface of the OLED negative pole can be reduced, transmission and reflection of an OLED can be freely converted by energization and deenergization of a liquid crystal display, so that light exiting is intelligently controlled, automatic display is achieved, the prepared intelligent window is simple in structure, thin in thickness and low in power consumption, and has the functions of privacy protection and automatic display and application potential in many scenes such as vehicles, shopping malls and aviation.
Owner:TRULY HUIZHOU SMART DISPLAY

Identity recognition management method and device based on block chain, medium and electronic equipment

The embodiment of the invention provides an identity recognition management method and device based on a block chain, a medium and electronic equipment. The identity recognition management method based on the block chain comprises the steps that storing historical hand back vein images of historical objects in the block chain; if the block chain generates a new block of the current hand back veinimage of the current object, triggering and identifying whether a target object exists in the historical object and the current object are the same object or not; if the current object and the targetobject are the same object, obtaining a target hand back vein image of the target object from the historical hand back vein image; and if the current hand back vein image is consistent with the targethand back vein image, sending verification passing information. According to the technical scheme provided by the embodiment of the invention, the hand vein image of the user can be stored by adopting a block chain technology, and identity recognition management can be carried out based on the stored hand vein image.
Owner:TAIKANG LIFE INSURANCE CO LTD

Distributed power transaction credible identity management method and system, and computer equipment

The invention belongs to the technical field of information security, and discloses a distributed power transaction credible identity management method and system, and computer equipment. The distributed power transaction credible identity management system comprises an identity registration module, a system role registration module, a voucher issuing module, a storage certificate creation module, a storage certificate verification module, a role updating module and a voucher updating module. Based on the blockchain, distributed identity identification, verifiable declaration, zero-knowledge proof and other technologies, autonomous control of entity (human, machine and object) identities in a distributed scene is achieved, identity security authentication, authorization and data exchange in a privacy protection state are achieved, and a brand-new, safe and efficient distributed authentication system is provided. Meanwhile, the system provides the capabilities of autonomous identity management, agile access, privacy authentication and the like of the distributed heterogeneous entity, the authentication mode is convenient, and the authentication cost is low.
Owner:INFORMATION COMM COMPANY STATE GRID SHANDONG ELECTRIC POWER +2

Geological disaster risk identification and early warning system based on block chain

The invention belongs to the field of geological disasters, and particularly relates to a geological disaster risk identification and early warning system based on a block chain. The geological disaster risk identification and early warning system comprises a data layer, a network layer, a consensus layer, a contract layer and an application layer, wherein the network layer is used for constructing a P2P data transmission channel and forming a distributed storage system located at a client node and a block chain taking each functional department as a node; the data layer converts the professional monitoring data of geological disasters and auxiliary early warning data into message digests, generates digital signatures and timestamps, and uploads the digital signatures and the timestamps to the block chain; and the consensus layer and the contract layer are jointly nested in chain codes of a block chain, various standards, specifications, regulations and the like related to the geological disasters are coded into intelligent contracts by adopting a JavaScript language, and formed executable codes are realized through the chain codes. According to the above technical scheme, the problems that time consumed for geological disaster recognition and early warning is long, working efficiency is low, and geological disaster recognition and early warning are not accurate and timely enough in the prior art are solved.
Owner:CHONGQING COLLEGE OF ELECTRONICS ENG

Light guide plate, preparation method of light guide plate and backlight module

The invention provides a light guide plate, a preparation method of the light guide plate and a backlight module, the light guide plate comprises a first substrate and a gradual change microstructure arranged on the first substrate, and one surface, far away from the first substrate, of the gradual change microstructure is a light emitting surface S1 of the light guide plate; one surface, far away from the gradual change microstructure, of the first substrate is a bottom surface S2 of the light guide plate, and a light incident surface S0 is connected with the light emergent surface S1 and the bottom surface S2; and the gradually-changed microstructure gradually changes from sparse to dense along with the distance from the light incident surface S0. According to the light guide plate, the light-emitting surface of the light guide plate is impressed by the light-cured resin to form the gradual change microstructure, the visual angle can be converged, the brightness of a backlight module is improved, a certain privacy protection effect is achieved, and compared with an integrally-formed light guide plate, the light guide plate has more excellent scratch resistance. The invention further provides a preparation method of the light guide plate. The light guide plate has the advantages of being low in mold opening cost, higher in production and assembly yield and the like.
Owner:ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL

Digital forensics method based on blockchain privacy protection and fine-grained access control

ActiveCN111327597BPrevent abuse of powerSolve the problem of guarding and stealingSecuring communicationShardPrivacy protection
The invention discloses a digital forensics method based on blockchain privacy protection and fine-grained access control. The first supervisor creates a digital forensics transaction, initiates a digital forensics transaction request to the second supervisor, and transmits important information of the digital forensics transaction to the second supervisor. Two regulators; the second regulator generates attribute encryption intermediate parameters through the encryption module, and authorizes and publishes them in the blockchain; after the first regulator is authorized, it obtains the shard key from the key management institution module through the authorization information, and Combine the fragmentation keys to generate a decryption key, and the data acquisition module collects data in the storage system through the decryption key; the first supervisor analyzes the data after collecting the data, and obtains the data analysis results; then generates a digital report for forensics, and the forensics is completed ; The present invention utilizes the potential of blockchain and smart contracts, and designs encryption primitives to build a blockchain-based Internet of Vehicles digital forensics solution, which has auditability, privacy protection and fine-grained data access control.
Owner:JINAN UNIVERSITY

Fall detection system and fall detection method based on depth image

The invention discloses a fall detection system and a fall detection method based on a depth image. The fall detection system comprises an image reading device which reads and preprocesses the depth image; a coordinate processing unit used for receiving the depth image information of the image reading device for calculating and processing coordinate information, calculating a speed and a acceleration of each joint point according to the coordinate information, and for judging whether a person is in a falling state or not by judging the characteristic information. Motion detection, behavior recognition and fall detection are carried out by using the depth image, unique advantage of privacy protection is achieved, and all-weather monitoring can be carried out in a more privacy-conscious room with no illumination interference.
Owner:上海数迹智能科技有限公司

Virtual fitness application recommendation method and device based on block chain

The embodiment of the invention provides a virtual fitness application recommendation method and device based on a block chain, a medium and electronic equipment, and belongs to the technical field ofcomputers. The method comprises the steps of storing the feedback information and application information of a virtual fitness application and user information in a block chain; when a recommendationrequest is received, extracting target feedback information of a target object from feedback information in the blockchain; and determining a recommended virtual fitness application in response to the recommendation request according to the target feedback information, the application information in the blockchain and the user information. According to the technical scheme of the embodiment of the invention, the related data of the virtual fitness application can be stored by adopting a block chain technology; the safety and reliability of data storage are improved, and the recommended virtual fitness application for the target object can be determined based on the stored virtual fitness application related data, so that the individuation and accuracy of virtual fitness application recommendation can be improved.
Owner:TAIKANG LIFE INSURANCE CO LTD

A kind of preparation method of smart window

The invention provides a method for preparing a smart window, the smart window includes a smart window based on passive matrix organic light emitting diodes and a smart window based on active matrix organic light emitting diodes, comprising: an anode deposition step, a substrate pattern making step, organic material evaporation Plating steps, electron injection layer manufacturing steps, cathode manufacturing steps, protective layer manufacturing steps, planarization layer and liquid crystal scanning electrode manufacturing steps, liquid crystal control unit manufacturing steps, liquid crystal filling steps, packaging steps. The present invention fills a specific liquid crystal material between the transparent OLED cathode and the back cover, which can not only reduce the loss of total reflection on the light-emitting surface of the OLED cathode, but also realize the free conversion of OLED transmission and reflection through power-on and power-off of the liquid crystal, and achieve intelligent control The purpose of light emission and independent display, so that the prepared smart window has a simple structure, thin thickness, low power consumption, privacy protection, and independent display functions. It has great application potential in many scenarios such as vehicles, shopping malls, and aviation.
Owner:TRULY HUIZHOU SMART DISPLAY
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