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Patent
South China University of Technology | Date: 2014-12-02

A system of mixed multivariate digital signature is disclosed. The system includes a signature module configured to sign a message to be signed, and a verification module configured to verify a signature. The signature module includes a data input/output port, a single-pole double-throw switch, a processor, an affine transformation component, a random generator, a linear equations solving component, and an affine transformation inversion component. The verification module includes a data input/output port, a single-pole double-throw switch, a processor and a public key verification component. The system and its method disclosed, under choosing appropriate parameters, can resist known algebraic attacks of multivariate public key cryptosystems, such as the Separation Attack, the Rank Attack, the Direct Attack and the Exhaustive Search Attack, etc. The security level of the system is greater than 2^(84 )and its signing speed is quite fast.


Patent
BOE Technology Group and South China University of Technology | Date: 2015-09-02

This disclosure discloses an oxide semiconductor thin film, a thin film transistor, a manufacturing method and a device, belonging to the field of flat panel display. The oxide semiconductor thin film is made of an oxide containing zirconium and indium. A method of manufacturing the oxide semiconductor thin film comprises preparing a target using the oxide containing zirconium and indium, and sputtering the target to obtain the oxide semiconductor thin film.


Patent
South China University of Technology and Guangzhou Huaxinke Enterprise Co. | Date: 2015-07-13

The present invention relates to a volume pulsed deformation plasticating and conveying method and device by an eccentric rotor. The rotation of the eccentric rotor and the rolling of the rotor in the inner cavity of a stator during constant reverse revolutions cause the volume of the material between the eccentric rotor and the stator to periodically change alternatively along the axial direction and the radial direction of the stator, thereby enabling the volume pulsed deformation plasticating and conveying of the material. The volume pulsed deformation plasticating and conveying device consists of a stator, of which the inner cavity comprises multiple alternatingly disposed spiral segments and straight segments, and an eccentric rotor comprising multiple alternatingly disposed eccentric spiral segments and eccentric straight segments. The eccentric rotor is disposed in the inner cavity of the stator. The eccentric spiral segments and the eccentric straight segments of the eccentric rotor correspond one-to-one with the spiral segments and straight segments of the stator. The present invention can be used as the extruding system of an extruder or be combined with different plunger injection units to form a plasticating injection device of an injection molding machine. The present invention has a short thermo-mechanical distance for the materials, low energy consumption, and wide adaptability.


Patent
South China University of Technology and Guangzhou Huaxinke Enterprise Co. | Date: 2014-12-03

Disclosed are a power time sequence conversion method and device for manufacturing products in batches. A common power is sequentially coupled with power input ends of a plurality of execution mechanisms in different time periods, so as to provide in time order a plurality of power drives required during a batch manufacturing process of products, or provide power drives in different forms such as movements and forces to the same execution mechanism in a relaying manner in two adjacent time periods. A change gear capable of rotation and revolution is sequentially meshed with a plurality of tail end driving gears in different time periods, wherein the tail end driving gears are uniformly distributed in the circumferential direction and serve as power outputs, the revolution of the change gear is braked after each meshing to achieve the power drive of a certain execution mechanism in batch manufacturing of the products, and meanwhile, power drives in different forms such as movements and forces are provided to the same execution mechanism in a relaying manner through a torque converter. Compared with the conventional batch manufacturing of products where a plurality of independent power drives are required, the present invention has remarkable characteristics in low cost, low energy consumption, high reliability, good stability and the like.


Patent
South China University of Technology | Date: 2014-08-12

The present invention discloses a stiffness-controllable earthquake-isolation support using negative gravity stiffness, which comprises an upper plate connected to an upper structure, a lower plate connected to a base structure at the bottom, K supporting columns arranged longitudinally between the upper and lower plates, with the supporting columns respectively connected with the upper and lower plates through a ball hinge, and L elastic connecting plates arranged laterally between the supporting columns, wherein K3, LNK and N1. The mechanical motion mechanism of the present invention composed of the earthquake-isolation support, the supporting column and the ball hinges at both ends of the supporting column forms, under the action of gravity of the upper structure, the negative gravity stiffness that causes the upper structure to deviate from the equilibrium position, and the frame structure consisting of the connecting plates between the supporting columns forms the positive stiffness that restores the upper structure to the equilibrium position, with the stiffness of the earthquake-isolation support adjustable by adjusting the connecting plate, thus allowing the seismic energy to be effectively isolated.


The present invention discloses a stiffness control mechanism of a variable stiffness earthquake-isolation layer adapted to structural earthquake isolation and wind resistance, which comprises an upper flange plate connected to an upper structure, a lower flange plate connected to a base structure at the bottom, a pin key provided between hollow portions of the upper and lower flange plates, with the pin key movable up and down between the hollow portions of the upper and lower flange plates and the height of the pin key greater than the distance between the upper and lower flange plates, and a control means for fixing the pin key or controlling the pin key to move downward. The stiffness control mechanism of the earthquake-isolation layer of the present invention can automatically change stiffness of the earthquake-isolation layer, both effectively wind resistant and effectively earthquake resistant.


Patent
South China University of Technology | Date: 2014-12-04

The present invention discloses an information prediction and crawling method based on a webpage link parameter analysis, comprising the following sequence of steps: calculating statistical parameter features of webpage links, calculating distribution patterns of outlinks contained in webpages, classifying the webpages according to the distribution patterns of the outlinks of the webpages, performing a sampling prediction on webpage resources, performing an crawling test on prediction samples, and performing an overall prediction on the webpage resources. According to the method of the present invention, the deficiencies of the traditional webpages crawling mode are effectively supplemented, the quantity of link resources to be crawled is expanded, a great number of undiscovered webpage resources are predicted by means of the known webpage resource features, and the speed and coverage rate of the webpage information crawling is improved.


Patent
South China University of Technology and Guangzhou Huaxinke Enterprise Co. | Date: 2017-03-22

The present invention relates to a volume pulsed deformation plasticating and conveying method and device by an eccentric rotor. The rotation of the eccentric rotor and the rolling of the rotor in the inner cavity of a stator during constant reverse revolutions cause the volume of the material between the eccentric rotor and the stator to periodically change alternatively along the axial direction and the radial direction of the stator, thereby enabling the volume pulsed deformation plasticating and conveying of the material. The volume pulsed deformation plasticating and conveying device consists of a stator, of which the inner cavity comprises multiple alternatingly disposed spiral segments and straight segments, and an eccentric rotor comprising multiple alternatingly disposed eccentric spiral segments and eccentric straight segments. The eccentric rotor is disposed in the inner cavity of the stator. The eccentric spiral segments and the eccentric straight segments of the eccentric rotor correspond one-to-one with the spiral segments and straight segments of the stator. The present invention can be used as the extruding system of an extruder or be combined with different plunger injection units to form a plasticating injection device of an injection molding machine. The present invention has a short thermo-mechanical distance for the materials, low energy consumption, and wide adaptability.


Patent
South China University of Technology and Guangzhou Huaxinke Enterprise Co. | Date: 2017-03-22

Disclosed are a power time sequence conversion method and device for manufacturing products in batches. A common power is sequentially coupled with power input ends of a plurality of execution mechanisms in different time periods, so as to provide in time order a plurality of power drives required during a batch manufacturing process of products, or provide power drives in different forms such as movements and forces to the same execution mechanism in a relaying manner in two adjacent time periods. A change gear capable of rotation and revolution is sequentially meshed with a plurality of tail end driving gears in different time periods, wherein the tail end driving gears are uniformly distributed in the circumferential direction and serve as power outputs, the revolution of the change gear is braked after each meshing to achieve the power drive of a certain execution mechanism in batch manufacturing of the products, and meanwhile, power drives in different forms such as movements and forces are provided to the same execution mechanism in a relaying manner through a torque converter. Compared with the conventional batch manufacturing of products where a plurality of independent power drives are required, the present invention has remarkable characteristics in low cost, low energy consumption, high reliability, good stability and the like.


Patent
BOE Technology Group and South China University of Technology | Date: 2017-01-25

This invention discloses a thin film transistor and the preparation method thereof, an array substrate, and a display panel, so as to solve the problem that the active layer is prone to be corroded when a metal oxide thin film transistor is produced by a back channel etching process. The preparation method comprises: forming a gate electrode metal thin film on a base substrate, and allowing the gate electrode metal thin film to form a gate electrode metal layer comprising a gate electrode by a patterning process; forming a gate electrode insulating layer on the gate electrode metal layer; forming an active layer on the gate electrode insulating layer; preparing a metal nanoparticle layer on the active layer, said metal nanoparticle layer being used as an etching protection layer; forming a source and drain electrode metal thin film on the base substrate on which the above processes are finished, and allowing the source and drain electrode metal thin film to form a source and drain electrode metal layer comprising a source electrode and a drain electrode by a patterning process, wherein the source electrode and the drain electrode cover a part of the metal nanoparticle layer; removing or oxidizing the part of the metal nanoparticle layer which is not covered by the source electrode and the drain electrode in an oxygen-containing atmosphere; and forming a passivation layer on the source and drain electrode metal layer.

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