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132results about How to "Type fast" patented technology

Digital cryptographic key protection method

InactiveCN101110831AEnsure the convenience of managementType fastTransmissionComputer hardwareNetwork packet
The present invention discloses a digital cryptographic key protecting method, which comprises that a server encrypts to the original cryptographic key with a receiver public cryptographic key according to the encryption algorithm, to span the encryption cryptographic key messages, a data packet is formed with the encryption cryptographic key messages and other cryptographic key related messages, a signing operation to the data packet is performed with a server private cryptographic key to span the signing messages, the data packet and the signing messages is sent to the receiver, the receiver processes the other related messages of the cryptographic key in the data packet according to the first message-digest Algorithm, to span a message-digest value which acts as a scrambling cryptographic key to encrypt to the original cryptographic key, thus a storage encryption cryptographic key is obtained, and the storage encryption cryptographic key, the related messages of the original cryptographic key and the scrambling algorithm are stored in a data base, the client end sends a cryptographic key requirement to the receiver, the receiver encrypts again to the storage cryptographic key after the storage cryptographic key is taken out, and sends the results to the client end and takes out the messages in the data base regularly, and update the scrambling algorithm and the message-digest and the storage encryption cryptographic key. The present invention improves the security of the cryptographic key input, storage, output and updating on the cryptographic key management convenience guaranteeing.
Owner:ZTE CORP

Display and control method of virtual keyboard used for touch screen

The invention relates to a display and control method of a virtual keyboard used for a touch screen, which comprises the following steps: an operator manually holds hand-held electronic equipment andcontacts with a touch sensing device of the hand-held electronic equipment through fingers; an input software system receives and analyzes finger contact information,, selects and switches a contact virtual keyboard interface corresponding to the input software system and outputs the contact virtual keyboard interface to a touch display device in a semitransparency way to be overlapped with a background picture; a display system of the touch screen receives the information of pressing the virtual keyboard and transmits the information of pressing the touch screen into the input software system; and finally, the input software system outputs the inputted contents to other application software. By using the method, the interface of the application software and the interface of the virtual keyboard can be both maximumly displayed on the touch screen, thereby increasing the area of a virtual key field, reducing maloperation during input, realizing the highly efficient input of the hand-held electronic equipment and enabling the usage to be much more convenient, easier and faster.
Owner:聂清永

Device and method for exploiting seafloor natural gas hydrates through continuously injecting hot seawater

The invention provides a device for exploiting seafloor natural gas hydrates through continuously injecting hot seawater. The device comprises a plurality of water supply pipes (1), a plurality of heat radiation pipes (3) and at least one water outlet pipe (2), wherein the inlet end of each water supply pipe (1) is arranged at the offshore plane; the position of the inlet end of each water supply pipe (1) is higher than the sea level; the heat radiation pipes (3) are of cobweb type or hexagonal reticular or branch type or annular structures and are distributed at a seafloor hydrate layer (6); the outlet end of the water outlet pipe (2) is arranged at the offshore plane; the outlet end of the water outlet pipe (2) is flush with or below the water inlet ends of the water supply pipes (1); and the plurality of water supply pipes (1), the plurality of heat radiation pipes (3) and the at least one water outlet pipe (2) are sequentially connected to form a communicator. The hydrostatic transformation principle of the communicator is sufficiently utilized; high-temperature seawater at the sea surface layer is continuously pumped through the heat radiation pipes laid in the seafloor hydrate layer only by a low-power centrifugal pump in an ordinary model. Heat radiation pipelines are of reticular structures, so that the heat radiation efficiency can be improved; the heat radiation area is expanded; and the exploitation efficiency is improved.
Owner:INST OF MECHANICS - CHINESE ACAD OF SCI

Method for improving abrasion resistance of stir head for stir-friction welding of high-strength aluminum alloy

The invention relates to a method for improving abrasion resistance of a stir head for stir-friction welding of a high-strength aluminum alloy. The method aims at solving the problems that abrasion resistance of a stir head for stir-friction welding of the high-strength aluminum alloy in the prior art is poor. According to the method for improving abrasion resistance of the stir head for stir-friction welding of the high-strength aluminum alloy, strip-shaped laser cladding abrasion-resistant layers are evenly cladded on the surfaces of a shaft shoulder and a stir pin of the stir head through the laser cladding technology, wherein the strip-shaped laser cladding abrasion-resistant layers are formed by mixing a laser clad alloy and WC particles. The weight percentage of the WC particles and the laser clad alloy is that the WC particles counts for 10-20% of the total weight, and the laser clad alloy comprises, by weight, 5-15% of Cr, 5-15% of Co, 2-5% of Si, 3-6% of W and 1-4% of Pd, and the remaining is Ni. The surfaces of the shaft shoulder and the stir pin of the stir head are heated through laser beams with high energy density to form the strip-shaped laser cladding abrasion-resistant layers, the width of the strip-shaped laser cladding abrasion-resistant layers is 2-3mm, the height is 0.05-0.2mm, and the number of strips on the surfaces of the shaft shoulder and the stir pin is 3-8.
Owner:致友(长春)新能源汽车零部件制造有限公司

Hybrid microwave integrated circuit

The invention relates to a hybrid microwave integrated circuit. Aiming at the defects that the hybrid microwave integrated circuit of a large-size high-frequency power device has infirm welding and poor heat conducting performance and is easy to produce oscillation in the prior art, the invention discloses the hybrid microwave integrated circuit suitable for manufacturing the large-size high-frequency power device. In order to solve the technical problems, the invention adopts the technical scheme that the hybrid microwave integrated circuit comprises a substrate encapsulated in a tube shell, and at least two power devices manufactured on the substrate; the power device consists of field effect transistors; a matching circuit and an extraction electrode are manufactured on the substrate; the power device is connected with the extraction electrode through the matching circuit; the extraction electrode is connected with a pin; and gate electrodes of chips of the field effect transistors are welded in parallel through metal wires, drain electrodes of the chips of the field effect transistors are welded in parallel through metal wires, and the gate electrodes and the drain electrodes connected in parallel are welded on the matching circuit through the metal wires respectively.
Owner:SICHUAN LONGRUI MICROELECTRONICS

Air-breathing high-sensitivity smoke particle detector and application thereof

ActiveCN103366495AAvoid interferenceEliminate the effects of probing accuracyFire alarmsParticle suspension analysisAir pumpParticle physics
The invention discloses an air-breathing high-sensitivity smoke particle detector and application thereof. The air-breathing high-sensitivity smoke particle detector and application thereof are characterized in that the smoke particle detector is arranged at the tail end of an air pumping pipeline in the monitored area, an air sample is drawn by the air pumping pipeline in a drive mode and filtered, and the smoke particles with the grain diameters of not more than 20 microns in the air sample drawn in the drive mode and filtered are tested through the detector according to a laser particle scattering method. According to the air-breathing high-sensitivity smoke particle detector and application thereof, infinitesimal smoke particles can be detected, and fire characteristic parameters can be effectively detected in the ultra early stage of fire; interferences of passive waiting and delaying and air motion of a protected area are overcome, and the influence on detecting precision due to smoke particle concentration dilution is eliminated; by high-sensitive composite monitoring on the fire characteristic parameters of smoke particle concentration, temperature and carbon monoxide gas in the air sample, the defect that smoke particles are monitored in a single mode through an existing air-breathing high-sensitivity smoke particle detecting system can be overcome, and therefore false alarm rate is effectively lowered.
Owner:HEFEI UNIV OF TECH

Heat pump air conditioning system and control method thereof

The invention provides a heat pump air conditioning system and a control method thereof. The system comprises a compressor, a four-way valve, an indoor heat exchanger, a first throttling device, a second throttling device, a main heat exchanger and a defrosting heat exchanger, the defrosting heat exchanger is located on the air flowing upstream side of the main heat exchanger, and the second throttling device and the defrosting heat exchanger are connected in series to form a defrosting pipeline. Under the heating working condition, a refrigerant passes through the indoor heat exchanger, the first throttling device and the main heat exchanger from an exhaust port of the compressor, is throttled by the second throttling device, enters the defrosting heat exchanger after being throttled by the second throttling device, and then flows back to the compressor. A refrigerant heating device is arranged on at least one of the exhaust pipeline, the air suction pipeline and the defrosting pipeline of the compressor. According to the heat pump air conditioning system, the frosting frequency of the main outdoor heat exchanger can be reduced, the heat input of a refrigerant of the whole system can be enhanced, the heating duration is prolonged, and continuous indoor heat supply is achieved in the defrosting period.
Owner:ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION

Heat pump air conditioning system and control method thereof

The invention provides a heat pump air conditioning system and a control method thereof. The system comprises a compressor, a four-way valve, an indoor heat exchanger, a first throttling device, a second throttling device, a main heat exchanger and a defrosting heat exchanger, the defrosting heat exchanger is located on the air flowing upstream side of the main heat exchanger, and the second throttling device and the defrosting heat exchanger are connected in series to form a defrosting pipeline. Under the heating working condition, a refrigerant passes through the indoor heat exchanger, the first throttling device and the main heat exchanger from an exhaust port of the compressor, is throttled by the second throttling device, enters the defrosting heat exchanger after being throttled by the second throttling device, and then flows back to the compressor. A refrigerant heating device is arranged on at least one of the exhaust pipeline, the air suction pipeline and the defrosting pipeline of the compressor. According to the heat pump air conditioning system, the frosting frequency of the main outdoor heat exchanger can be reduced, the heat input of a refrigerant of the whole system can be enhanced, the heating duration is prolonged, and continuous indoor heat supply is achieved in the defrosting period.`.
Owner:GREE ELECTRIC APPLIANCES INC

Self-guided multi-degree-of-freedom wave energy power generation device

The invention discloses a self-guided multi-degree-of-freedom wave energy power generation device. The self-guided multi-degree-of-freedom wave energy power generation device comprises a support module and a power generation module; the support module is of a multi-box truss structure; the power generation module comprises a self-guided hydraulic PTO device and a magnetic induction power generation device; in the self-guided hydraulic PTO power generation device, two stand columns are driven by waves to pitch in different directions, and the stand columns swing back and forth to make a hydraulic generator generate power; and in the magnetic induction power generation device, double floats heave along the peripheries of the stand columns under the action of waves and drive magnetic rods toreciprocate up and down in the stand columns, and magnetic induction lines generated by the displacement of an electromagnetic field are cut by electromagnetic coils to generate electric energy. According to the self-guided multi-degree-of-freedom wave energy power generation device, a self-guided multi-degree-of-freedom wave energy capture system based on the combined motion of pitching and heaving is established, the defect that a traditional device only captures wave energy in one direction is overcome, the comprehensive utilization of wave energy in any direction is realized, and the waveenergy capture efficiency is greatly improved; and the self-guided multi-degree-of-freedom wave energy power generation device can be widely applied to existing marine engineering structures.
Owner:JIANGSU UNIV OF SCI & TECH

Hybrid T-type multi-level inversion device and control method thereof

ActiveCN110572061ASolve the technical problem of excessive voltage stressReduce voltage stressAc-dc conversionCapacitanceElectricity
The invention provides a hybrid T-type multi-level inversion device and a control method thereof. In the inversion device, a capacitor bank string is connected with a DC voltage source Vdc in parallel; the central point of the capacitor bank string is connected with one end of a first reverse-series bridge arm, the other end of the first reverse-series bridge arm is respectively connected with a first connecting end of a middle bridge arm, one end of a second reverse-series bridge arm and one end of a third reverse-series bridge arm, and a T-shaped bridge arm is formed; the first reverse-series bridge arm, the second reverse-series bridge arm, the third reverse-series bridge arm, the middle bridge arm and a voltage-dividing capacitor form a switched capacitor unit; a positive series bridgearm is connected in parallel with the voltage-dividing capacitor; and the central point of the positive series bridge arm and the central point of the capacitor bank string serve as AC voltage outputends of the hybrid T-shaped multi-level inversion device. The technical problem of overlarge voltage stress borne by the switching tube due to increase of output voltage in the switched capacitor multi-level inverter is effectively solved, so that the multi-level inverter is suitable for high-voltage and high-power occasions, and the application range of the inverter is expanded.
Owner:ZHENGZHOU UNIV
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