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81results about How to "Close in performance" patented technology
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Authentication system executing an elliptic curve digital signature cryptographic process
ActiveUS20060285682A1Improve parallelismImprove performanceDigital data processing detailsDigital computer detailsAuthentication systemPower analysis
An authentication system and a method for signing data are disclosed. The system uses a hardware software partitioned approach. In its implementation the system of the invention compares favourably with performance and other parameters with a complete hardware or full software implementation. Particularly, advantageously there is a reduced gate count. Also as disclosed in the invention the system makes it difficult for hackers to attack the system using simple power analysis.
Owner:TATA CONSULTANCY SERVICES LTD
Equal BER power control for uplink MC-CDMA with MMSE successive interference cancellation
ActiveUS7620096B2Maximize SIRsImprove efficiencyPower managementEnergy efficient ICTEngineeringPower control
Owner:NEW JERSEY INSTITUTE OF TECHNOLOGY
Adaptive blind start-up receiver architecture with fractional baud rate sampling for full-duplex multi-level PAM systems
ActiveUS20060256849A1Maximize signal to noise ratioEasy to useMultiple-port networksError preventionA d converterEqualization
This invention presents a novel receiver architecture for full-duplex multi-level PAM systems. The receiver employs an Analog-to-Digital Converter (ADC) that has a sample rate flexibly specified as (Ns+1) / Ns baud rate where Ns is an integer equal or greater than 1. A fractional-spaced echo canceller is used to cancel the echo at the ADC output. The use of a fractional sampling rate higher than the baud rate also enables the timing recovery function be implemented in the digital domain and hence eliminates the need of using the complex analog phase selection circuit. The receiver is also capable of fast, blind start-up by use of a decision feedback equalizer with unity main tap and a soft level slicer. The timing phase can be optimally located using a derivative channel estimator. Once the “eye-open” condition is achieved, the channel equalization is switched to the use of linear equalizer coupled with an error feedback equalizer to alleviate the error propagation problem associated with the decision feedback equalizer.
Owner:RDC SEMICON CO LTD
Relay precoder selection method for two-way amplify-and-forward MIMO relay systems and communication devices using the selection method or the selected relay precoder
ActiveUS20170294946A1Reduce computational complexityLow costSpatial transmit diversityComputation complexityEngineering
This invention provides a relay precoder selection method for two-way amplify-and-forward multiple-input multiple-output (MIMO) relay systems and communication devices using the selection method or the selected relay precoder. According to the relationship between a relay precoder and the singular values of the effective MIMO channels, a set of candidate relay precoders are constructed based on the singular vector subspaces of cascaded MIMO channels, and one of them is selected for meeting a specific design criterion, such as the minimum sum of mean-squared errors, the maximum sum of channel capacities, and the minimum or maximum sum of condition numbers, where the condition number is defined as the ratio of the largest to the smallest singular value of a MIMO channel. As compared with the iterative design methods with the best performance, this invention achieves close performance while requiring much lower computational complexity.
Owner:NATIONAL TSING HUA UNIVERSITY
Display panel and display panel manufacturing method
ActiveUS20140184059A1Improve production efficiencyPromote incomeDischarge tube luminescnet screensElectroluminescent light sourcesStructural engineeringMechanical engineering
A display panel comprises a first substrate, a second substrate arranged opposite the first substrate, electroluminescence elements disposed between the first substrate and the second substrate, and a sealing member provided between the first substrate and the second substrate, sealing the electroluminescence elements. The sealing member includes a rectangular frame formed along a perimeter of the electroluminescence elements and a reinforced portion protruding outward from a corner portion of the rectangular frame, the reinforced portion includes a first side face cut so as to be flush with at least one corner side face of the first substrate, and a second side face cut so as to be flush with a corresponding corner side face of the second substrate.
Owner:JOLED INC
Airtight rubber of all-steel radial tyre and preparation method thereof
The invention discloses an air-barrier glue for all-steel-wire truck radial tires, as well as a preparation method thereof. The glue comprises the following components in weight portion: 60 to 80 portions of natural glue, 20 to 40 portions of butadiene-styrene rubber, 40 to 65 portions of carbon black N660 as a reinforcing agent, 3 to 7 portions of zinc oxide as an activator, 1 to 4 portions of stearic acid, 2.5 to 5 portions of 204 resin as a tackifier, 2 to 5 portions of homogenizing agent UB4000 or 2 to 5 portions of homogenizing agent 40MSF, 0.5 to 2 portions of antiager 4020, 0.5 to 2 portions of antiager RD, 1 to 3 portions of protective wax, 2 to 4 portions of aromatic oil as a softening plasticizer, 0.5 to 1.0 portions of sulfur as a vulcanizing agent and 1.0 to 3.0 portions of accelerator NS or 1.0 to 3.0 portions of accelerator TBBS.
Owner:JIANGSU GENERAL SCI TECH
Central noise reduction loudspeaker
InactiveUS20160314779A1Less distortionImprove signal-to-noise ratioMicrophonesHearing device active noise cancellationFixed frameEngineering
A central noise reduction loudspeaker includes a speaker unit, a top cap, a seat body, and a microphone. The speaker unit includes a diaphragm, and the diaphragm includes a central through hole located at center of the diaphragm. The top cap covers the seat body, and the speaker unit is disposed between the top cap and the seat body. The top cap includes a central fixed frame penetrating the central through hole of the diaphragm. The microphone is disposed within the central fixed frame and located in the central through hole. Since the microphone is disposed in central through hole, compared to conventional, the front cavity and the overall size of the loudspeaker or earphone can be reduced and the production process can be simplified.
Owner:JETVOX ACOUSTIC
Method for regenerating nylon
InactiveCN104017205AHigh recovery rateClose in performancePlastic recyclingNylon materialPolymer science
The invention provides a method for regenerating nylon. The method comprises the following steps: firstly, treating a material containing the nylon in the presence of a solvent and a depolymerization catalyst at a temperature of 10 DEG C to 200 DEG C at a pressure of 0.4MPa to 4MPa so as to obtain a nylon oligomer; then, removing impurities from the obtained nylon oligomer; and finally, regulating a pH value of the treated nylon oligomer by using a diamine material so as to stabilize the pH value within 7.5 to 8, adding a polymerization catalyst, heating to 100 DEG C to 300 DEG C in a stirring manner and pressurizing to 0.4MPa to 3MPa until the melt index of the material reaches 30g to 60g per 10 minutes, thereby obtaining the regenerated nylon material. The method provided by the invention is simple in process, low in cost, easy to industrialize and high in nylon recycling rate. In addition, the performance of the obtained nylon material is approximate to that of a novel nylon material.
Owner:李兆顺 +1
Shared substrate multi-beam antenna based on eight port junctions
ActiveCN101533961AImplementing Multi-Beam AntennasCompact structurePolarised antenna unit combinationsSlot antennasHigh volume manufacturingEngineering
The invention relates to a shared substrate multi-beam antenna based on eight port junctions. The structure of the prior eight port junctions is provided with two fixed phase shifters of 45 degrees, and a four-port shared substrate multi-beam antenna in millimeter wave frequency is achieved by using substrate integrated waveguide. The shared substrate multi-beam antenna has the similar performance as a multi-beam antenna fed by using a 4*4Butler matrix, and has the advantages of compact volume, non-crossing transmission line structure, high reliability, radiation chrematistics uninterrupted by a beam shaping network, low manufacturing cost, easy mass production and easy integration with an active circuit. A substrate integrated waveguide antenna (7) with four groove clearances is positioned above an upper metal copper-clad surface (1) and consists of four groove clearance units, and the groove clearance units positioned at two sides of a center line are provided with groove clearances respectively so as to form four unit antenna arrays.
Owner:SOUTHEAST UNIV
Method for producing cationic type composite cotton yarn imitation threads
ActiveCN103320923ADyeableHygroscopicFilament/thread formingMonocomponent polyesters artificial filamentTextile fiberMachining
The invention relates to the field of textile fibers and provides a method for producing cationic type composite cotton yarn imitation threads to solve the problems of cotton fiber imitation polyester filaments. Cationic polyesters are used as raw materials to be produced into cationic POY / FDY (ITY) composite fibers through a POY / FDY composite fiber one-step spinning device, and the POY / FDY (ITY) composite fibers are subjected to false twisting machining to be produced into cationic composite cotton yarn imitation threads. The cotton yarn imitation threads produced through the method are provided with appearance characteristics of cotton yarn and good in hygroscopicity, dyeing property and pilling resistance.
Owner:杭州逸暻化纤有限公司
Asphalt pavement aging simulating method
The invention discloses an asphalt pavement aging simulating method. The method comprises the following steps: inquiring the climate and communication information of the area to be simulated, according to the climate and communication information, calculating the rutting equivalent temperature, UV accelerating factor, raining accelerating factor, and rutting accelerating factor; according to the service life of the simulated pavement, calculating the rutting time, UV radiation time, and spraying time; putting a rutting member into a pavement material life-cycle analysis instrument, starting the pavement material life-cycle analysis instrument to obtain a simulated aged member; and according to the analysis of the multifunctional pavement material life-cycle analysis instrument on the aged member and the weights of aging factors (rutting equivalent temperature, UV accelerating factor, raining accelerating factor, and rutting accelerating factor), obtaining the aging index of simulated member. The aging mode is controlled by a plurality of factors, and thus the simulation is more close to the actual situation of asphalt pavement.
Owner:WUHAN UNIV OF TECH
Authentication system executing an elliptic curve digital signature cryptographic process
ActiveUS7853012B2Improve parallelismImprove performanceDigital data processing detailsDigital computer detailsPower analysisDigital signature
Owner:TATA CONSULTANCY SERVICES LTD
Power battery self-discharge detecting and grading process
PendingCN109188288AQuick and efficient selectionSave binning processAssembling battery machinesFinal product manufacturePower batteryEngineering
The invention relates to a power battery self-discharge detecting and grading process. The process comprises the following steps of: carrying out capacity grading on formed batteries and recording discharge capacities as C1; carrying out high-temperature aging on the capacity graded batteries at a temperature of 40-80 DEG C for 3-7 days; carrying out capacity keeping rate test on the high-temperature aged batteries, recording the discharge capacities as C2, calculating ratios K of C2 to C1, selecting batteries with relative large self-discharge through the K and grading the other batteries, wherein the batteries, the K of which is smaller than or equal to R, are batteries with large self-discharge, namely, unqualified batteries, and the batteries, the K of which is between R and 100, are divided into N grades according to the K; and carrying out stock removal on the graded batteries according to the grades. According to the process, batteries with relatively large self-discharge can berapidly and effectively selected, and the batteries are divided into different grades during the detection, so that the grading process of module grouping sections is saved.
Owner:江西安驰新能源科技有限公司
Channel estimation method of OFDM (orthogonal frequency division multiplexing) system
InactiveCN102761502AImprove accuracyAvoid disadvantagesBaseband system detailsMulti-frequency code systemsSingular value decompositionEstimation methods
The invention discloses a channel estimation method of an OFDM (orthogonal frequency division multiplexing) system. The channel estimation method comprises the following steps of: generating a Hankel matrix of each sub-segment, performing SVD (singular value decomposition) on the Hankel matrix of each sub-segment, retaining one bit or multiple bits before diagonal entries in a singular value diagonal matrix corresponding to the Hankel matrix of each sub-segment, forming a new singular value diagonal matrix corresponding to the Hankel matrix of each sub-segment, further generating a new Hankel matrix of each sub-segment according to the new singular value diagonal matrix, extracting estimation channel information of each sub-segment according to the new Hankel matrix and finally combining the estimation channel information of each sub-segment to form the complete estimation channel information. According to the method disclosed by the invention, the accuracy in channel estimation can be improved.
Owner:POTEVIO INFORMATION TECH CO LTD
Toughened nylon, nylon toughening agent and preparation method
The invention discloses toughened nylon, a nylon toughening agent and a preparation method. The preparation method comprises the steps that graft polyolefin is prepared through a low-temperature plasma technique to serve as the toughening agent, wherein polyolefin is placed in a plasma reaction device, surface treatment is conducted on polyolefin by introducing carbon dioxide or mixed gas of carbon dioxide and other gas, and polyolefin containing carboxyl and carbonyl polar group graft on the surface is obtained; nylon, graft polyolefin and an antioxidant are weighed by weight and mixed to be uniform, the mixture is put into an extruder for a reaction, extrudate is pulled, cooled, dried and subjected to grain-sized dicing, and toughened nylon particles are obtained. The prepared toughened nylon material can be widely applied to the fields of automobiles, electronics, machinery, rail transit, sports equipment and the like.
Owner:ENERGY RES INST OF SHANDONG ACAD OF SCI +1
Fe-based metal glass composite coating enhanced by WC-Co as well as preparation method of the coating
InactiveCN103526135AHigh hardnessHigh strengthMolten spray coatingHeat inorganic powder coatingGlass compositesWaste product
The invention provides a Fe-based metal glass composite coating enhanced by WC-Co as well as a preparation method of the coating. By volume, 10%-30% of WC-Co powder and 70%-90% of Fe-based amorphous powder are mixed evenly to obtain a mixture serving as a spraying material, and by virtue of a hypersonic flame spraying technology, the metal glass coating enhanced by a hard alloy is prepared on the surface of a part. Compared with the existing Fe-based amorphous coating, the Fe-based metal glass composite coating is higher in hardness, strength and wear-resisting performance. Compared with a WC-Co coating prepared by the same method, the Fe-based metal glass composite coating is similar in performance but much lower in cost. The Fe-based metal glass composite coating with excellent performance and low cost can be used for not only enhancing product performance during production of new products, but also repairing or re-manufacturing waste products, and has extensive application prospect.
Owner:TIANJIN UNIV
Near maximum likelihood spatial multiplexing receiver
InactiveUS9008240B1Improve performanceReduce complexityData representation error detection/correctionSpatial transmit diversityCommunications systemRound complexity
This invention is related to a low-complexity MIMO detector in a wireless communication system with near optimal performance. An initial symbol estimation is performed for a received symbol vector. The soft information of the received symbol vector can be more accurately calculated using every candidate symbol vector of a combined set of candidate symbol vectors, wherein the combined set is generated based on the initial estimation. By combining aspects of both the linear detection and the ML detection, the complexity of the proposed detector becomes orders of magnitude lower than that of a ML detector, but the performance is very close to that of an ML detector.
Owner:QUALCOMM TECH INT
Synthetic hydrocarbon base oil prepared through coal-based alpha olefin
InactiveCN103525456ASynthetic Polymerization ControlClose in performanceLiquid hydrocarbon mixtures productionAlkaneAlpha-olefin
The invention provides a method for preparing synthetic hydrocarbon through coal-based olefin. The method comprises the following steps that a coal chemical industry byproduct light oil part in the coal-based olefin is provided and comprises alpha olefin and alkane; a synthetic hydrocarbon base oil product used as high-quality lubricating oil is prepared with olefin component AlCl3 catalysts and one or more accelerants in high-temperature Fischer-Tropsch coal chemical industry byproduct light oil.
Owner:上海纳克润滑技术有限公司
Rotary or linear beverage bottle cleaning machine configured to clean beverage bottles disposed upside-down which machine includes apparatus for cleaning rotary or linear beverage bottle cleaning machine in a filling plant and rotary or linear container cleaning machine configured to clean containers with apparatus for cleaning the container cleaning machine
ActiveUS20100037925A1Easy to cleanEliminates and restricts and minimizes manual interventionHollow article cleaningFilling device cleaningTrademarkEngineering
A rotary or linear beverage bottle cleaning machine configured to clean beverage bottles disposed upside-down which machine includes apparatus for cleaning rotary or linear beverage bottle cleaning machine in a filling plant and rotary or linear container cleaning machine configured to clean containers with apparatus for cleaning the container cleaning machine. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.
Owner:KHS GMBH
Display panel and display panel manufacturing method
ActiveUS9095018B2Improve production efficiencyPromote incomeElectroluminescent light sourcesSolid-state devicesEngineeringElectroluminescence
Owner:JOLED INC
Modified lignin enhanced rubber and preparation method thereof
ActiveCN111533922AImprove bindingIncrease forceRolling resistance optimizationPolymer scienceDouble bond
The invention discloses modified lignin enhanced rubber and a preparation method thereof. Modified lignin is prepared by carrying out composite modification on a compound containing carbon-carbon double bonds, a compound containing a sulfur element and a compound capable of sealing hydroxyl. Lignin is modified through the compound containing carbon-carbon double bonds, the contained double bonds and olefin in rubber generate a bonding effect, and the binding force of lignin and rubber is improved. Furthermore, the lignin is modified by the compound containing a sulfur element, so that the lignin contains a certain sulfur element, the acting force between the lignin and the rubber is improved, the performance of the rubber is improved, the use of a vulcanizing agent can be reduced, and thereplacement amount of the lignin to the carbon black is further increased. Besides, after the lignin is modified by the compound capable of sealing hydroxyl, the polar performance of the lignin is obviously reduced, so that the polarity of the lignin is closer to that of the rubber, the acting force between the rubber and the lignin is further improved, and the performance of the rubber is improved.
Owner:NANJING UNIV OF TECH
Semiconductor wafer chip sorting method, and semiconductor product packaging method and system
ActiveCN109830447AClose in performanceReduce productivity impactSemiconductor/solid-state device manufacturingSortingProduction rateInformation transmission
The invention discloses a semiconductor wafer chip sorting method. Qualified chips on an original wafer can be sorted and the qualified chips are placed on a reconstructed wafer according to the performance level grouping rule of the chips. The semiconductor wafer chip sorting method comprises the following steps of a performance level marking step S101: dividing the qualified chips on the original wafer into M performance levels according to performance differences by a device traceability system; an original information transmission step S102; a performance level grouping step S103: carryingout level grouping rule setting on a sorting device; a performance level selection step S104: reading an original electronic wafer map, and selecting the qualified chips on the original wafer according to a grouping selection rule by the sorting device; a reconstructed wafer reconstruction step S105; and a reconstruction information transmission step S106. The invention also discloses a semiconductor product packaging method and system. The technical effects of saving cost and increasing a production rate are achieved.
Owner:SHENZHEN STS MICROELECTRONICS
Blade driving device for use in cameras
InactiveUS7961246B2Reliably perform its functionImprove performanceTelevision system detailsColor television detailsEngineeringElectric motor
A blade driving device for use in cameras that includes a mechanical shutter blade that openably and closably disposed in front of a CCD, and is capable of blocking light passing through an exposure aperture. The blade driving device also includes a motor that drives the shutter blade, and a control means that drive-controls the motor. In this blade driving device, photography is performed such that the storage of an electric charge starts in the CCD and the closing motion of the shutter blade is completed. Opening energization is applied to the motor in order to allow the shutter blade to pre-perform an opening motion before performing a closing motion whenever a still image is photographed. Thus, the shutter blade always reaches an opened state prior to photography even if the shutter blade is closed without permission by receiving an impulsive force from the outside because of, for example, being dropped. Therefore, photography can be reliably performed.
Owner:COPAL CO LTD
Decision feedback solution for channels with low signal to noise ratio
ActiveUS20150188667A1Cost reductionOptimal performanceSpatial transmit diversityError preventionRound complexitySignal-to-noise ratio (imaging)
This invention is related to a low-complexity MIMO detector in a wireless communication system with near optimal performance. Initial symbol estimation is performed for a transmitted symbol vector. The soft information of the transmitted symbol vector can be more accurately calculated by deemphasizing the LLRs associated with symbols belonging to weak channels that may suffer from poor initial estimation. By combining aspects of both the linear detection and the ML detection, the complexity of the proposed detector becomes orders of magnitude lower than that of a ML detector, but the performance is very close to that of an ML detector.
Owner:QUALCOMM TECH INT
Method for predicting comprehensive performances of motorized spindle
ActiveCN108693774AClose in performanceEfficient and reliable prediction resultsAdaptive controlElectricityEngineering
Owner:ZHEJIANG UNIV KUNSHAN INNOVATION INST
Near maximum likelihood spatial multiplexing receiver
ActiveUS20150341143A1Improve performanceReduce complexitySpatial transmit diversityError preventionRound complexityCommunications system
Owner:QUALCOMM TECH INT
Automatic heel unit with heel support structure
Owner:FRITSCHI SWISS BINDINGS
Channel statistical information-based precoding method for multi-cell cooperation system
InactiveCN102710365AReduced Feedback Design RequirementsClose in performanceSpatial transmit diversityError preventionPrecodingTime information
A channel statistical information-based precoding method for a multi-cell cooperation system comprises that (1) multi-cell base stations participating in cooperation obtain second-order statistical information of all user channels of the system; (2) base stations cooperate with each other, and precoding vectors of all users of the system are calculated by using the obtained second-order statistical information of channels according to the channel statistical information-based precoding method; and (3) base stations multiply data which are required to be sent by each user by the corresponding precoding vector of the user and send precoded data. The method is characterized in that real-time information is replaced with the statistical information of channels and precoding vectors are calculated by using the channel statistical information-based precoding method. In the system, when Doppler spread of channels is small, and when precoding vectors obtained on the basis of the second-order statistical information of channels are compared with precoding vectors obtained on the basis of the real-time information of channels, performance loss at operating points is small.
Owner:SOUTHEAST UNIV
Content providing apparatus, display apparatus, and control method therefor
ActiveUS20170339408A1Improve qualityClose in performanceImage enhancementImage analysisImage basedQuality level
A content providing apparatus is disclosed. The content providing apparatus comprises: a communication unit for communicating with an external apparatus; an image processing unit for generating a compressed image by image-processing an input original image; and a control unit for controlling the communication unit to divide the original image into one or more regions based on the image quality, to obtain characteristic information for each region from the respective regions, and to transmit the obtained characteristic information for each region together with the compressed image to the external apparatus. As the result, the display apparatus may perform image quality improvement operation so that the image quality is close to the original quality level by extracting information required for improving the image quality and transmitting the same together with a compressed image in production and encoding steps before transmitting the image.
Owner:SAMSUNG ELECTRONICS CO LTD
Microphone Mount For A Speaker Cabinet
InactiveUS20190028788A1Improve stabilityPrevent rotationMicrophonesLoudspeakersEngineeringLoudspeaker
A microphone apparatus for mounting a microphone adjacent to a loudspeaker housed in a loudspeaker cabinet is defined by, an “L” shaped body with an adjustable foot that slides in a longitudinal direction along a channel strip to bridge a desired distance between the speaker cabinet and an opposing surface to achieve a wedge and secure mount. A positioning arm is fixed to the face of the “L” shape body and used to position the microphone to the desired distance of the loud speaker in the loudspeaker cabinet.
Owner:DUCKER MAXWELL PHILIP
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