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114results about How to "Simple design and implementation" patented technology

Method and system for implicitly resolving pointing ambiguities in human-computer interaction (HCI)

A method and system for implicitly resolving pointing ambiguities in human-computer interaction by implicitly analyzing user movements of a pointer toward a user targeted object located in an ambiguous multiple object domain and predicting the user targeted object, using different categories of heuristic (statically and / or dynamically learned) measures, such as (i) implicit user pointing gesture measures, (ii) application context, and (iii) number of computer suggestions of each predicted user targeted object. Featured are user pointing gesture measures of (1) speed-accuracy tradeoff, referred to as total movement time (TMT), and, amount of fine tuning (AFT) or tail-length (TL), and, (2) exact pointer position. A particular application context heuristic measure used is referred to as containment hierarchy. The invention is widely applicable to resolving a variety of different types of pointing ambiguities such as composite object types of pointing ambiguities, involving different types of pointing devices, and which are widely applicable to essentially any type of software and / or hardware methodology involving using a pointer, such as in computer aided design (CAD), object based graphical editing, and text editing.
Owner:RAMOT AT TEL AVIV UNIV LTD

Method for transmitting a data stream with anticipation of acknowledgments, correspondence input device and computer-readable storage medium

A method is proposed for transmitting data of a stream to be stimulated, coming from a sender device to a receiver device through a network segment and according to a protocol for packet transportation with acknowledgement. An input device of the network segment performs the following steps for the stream to be stimulated: determining a starting packet associated with a sequence number higher than the sequence numbers of packets in transit via the network segment (packets transmitted but not yet acknowledged positively by the receiver device); selecting, as a function of a consumption of a target bandwidth for the transmission of said stream, of packets of the stream following the starting packet, and for each of which an anticipated positive acknowledgement message must be transmitted; upon reception of a positive message of acknowledgement of the starting packet, launching a temporary phase comprising a step of transmitting to the sender device an anticipated positive acknowledgement message for the starting packet and for each selected packet; discarding the positive acknowledgements received from the receiver device which correspond to the selected packets and for which an anticipated positive acknowledgement message has been transmitted.
Owner:CANON KK

Emulational USB intermediate frequency responser used for satellite test and control

The invention discloses an emulational USB intermediate frequency responser used for satellite test and control. The emulational USB intermediate frequency responser used for the satellite test and control consists of a front-end analog-to-digital converter, a digital down-conversion module, a carrier synchronization module, a demodulation filter module, a forwarding modulation module and an output analog-to-digital converter; the connecting relations and the signal flow paths are that: an output signal of the front-end analog-to-digital converter enters the digital down-conversion module for processing; the output of the digital down-conversion module is processed in the carrier synchronization module; an output signal of the carrier synchronization module enters the demodulation filter module for processing; one output signal obtained by the demodulation filter module is remote subcarrier output of a demodulator; the other signal is a ranging signal; the ranging signal enters the forwarding modulation module for processing; and the output signal of the forwarding modulation module enters a digital-to-analog converter; and the output of the digital-to-analog converter is an intermediate frequency output signal of the responser. The emulational USB intermediate frequency responser has high stability, low design complexity, high compatibility, a practical value and an application prospect.
Owner:BEIHANG UNIV

Five-coordinate locating mechanism

The invention discloses a five-coordinate locating mechanism, which comprises an X-direction guide part, a Y-direction guide part, a Z-direction guide part, an A-direction rotating part and a working platform. The structures of the Y-direction guide part and the Z-direction guide part are the same, and moreover, the Y-direction guide part and the Z-direction guide part are arranged in a cross wayto provide the translational movement of the working platform in the X-direction and the Y-direction; the Z-direction guide part provides the translational movement of the working platform in the Z-direction and the rotation of the working platform in the B-direction through the synchronous or the asynchronous movement of Z-direction moving plates at the two sides of the Z-direction guide plate; and the A-direction rotating part provides the rotation of the working platform in the A-direction. The five-coordinate movement of the working platform is realized through mature and reliable structures like screws, guide rails, gear pairs and the like adopted by the five-coordinate locating mechanism. The five-coordinate locating mechanism has good processing and assembling properties, high locating precision, and large bearing capacity. Moreover, five coordinates control the movement in a relatively independent way, and kinematics analysis and solution are simple, therefore, the control is simpler.
Owner:陕西中科启航科技有限公司

Device and method for using radio frequency antenna as FM (Frequency Modulation) modulating antenna

The invention discloses a device and a method for using a radio frequency antenna as an FM (Frequency Modulation) modulating antenna. The device comprises the radio frequency antenna, a matching isolating circuit, a low-noise amplifying circuit and an FM modulation-demodulation chip, wherein the radio frequency antenna is used for receiving an FM modulating signal and a radio frequency signal used for normal communication; the matching isolating circuit is connected to the radio frequency antenna and is used for isolating the radio frequency signal, matching the FM modulating signal and outputting the FM modulating signal within a preset frequency band; the low-noise amplifying circuit is connected to the matching isolating circuit and is used for amplifying the received FM modulating signal; and the FM modulation-demodulation chip is connected to the low-noise amplifying circuit and is used for demodulating the received FM modulating signal and outputting an analog audio frequency signal. In the device, the radio frequency antenna is used as the FM antenna, the matching isolating circuit is used for efficiently separating two paths of signals, the quality of the FM signal is excellent, the anti-jamming capability is excellent, the earphone playing is supported and the external loudspeaker playing is also supported. The problem of structural assembling is avoided, the cost is low, the device is easily designed and realized, and the device is suitable for all the wireless terminal products supporting an FM function.
Owner:ZTE CORP

Experimental method based on thermo-motive disaster multi-parameter spatio-temporal evolution analysis experiment table

The invention discloses an experimental method based on a thermo-motive disaster multi-parameter spatio-temporal evolution analysis experiment table. The method comprises the steps of 1, determining a mine simulation object and establishing an experiment table device; 2, detecting the airtightness of the experiment table device; 3, initializing an experiment control terminal; 4, controlling the change of ventilation quantity in a roadway simulation module, roof caving position, roof caving degree and smoke and gas discharge position and speed, and acquiring the mine thermo-motive disaster multi-parameter spatio-temporal evolution process; 5, judging whether the concentration of gas and oxygen in the roadway simulation module reaches a critical threshold value causing gas explosion; 6, triggering secondary gas explosion in the roadway simulation module and analyzing thermo-motive disaster multi-parameter spatio-temporal change. Steps are simple, mine roadway ventilation quantity, roof caving phenomenon and the change of smoke and gas generating rates of different positions can be simulated, the position where secondary gas explosion occurs easily in the roadway simulation module can be acquired, and thermo-motive disaster multi-parameter spatio-temporal change can be analyzed.
Owner:XIAN UNIV OF SCI & TECH +1

Front-end sampling hold and margin amplification circuit of analog-to-digital converter

The invention relates to the technical field of streamline operating analog-to-digital converters, and discloses a front-end sampling hold and margin amplification circuit of an analog-to-digital converter. The circuit comprises an operational amplifier, a first switching capacitor unit, a second switching capacitor unit and two sampling switches, wherein the first switching capacitor unit and the second switching capacitor unit are alternately combined with the operational amplifier and the two sampling switches to form the sampling hold or margin amplification circuit. In a sampling phase, the first switching capacitor unit or the second switching capacitor unit and the two sampling switches sample the current signals, and meanwhile the second switching capacitor unit or the first switching capacitor unit and the operational amplifier amplify the margin (the part of signal removal quantization) of the last sampled signals; and in a holding phase, the first switching capacitor unit or the second switching capacitor unit and the operational amplifier hold the current signals. The circuit can realize the functions of a front-end sampling hold circuit and a fist-stage MDAC circuit of the streamline analog-to-digital converter with lower power consumption at the same time, and improve the precision of the streamline analog-to-digital converter.
Owner:FUDAN UNIV

RRAM sensitive amplifier

ActiveCN104778963ARealize the function of reading the state of the variable resistorShorter reading cycleDigital storageHigh resistanceElectrical resistance and conductance
The invention discloses an RRAM sensitive amplifier, comprising a storage branch, a reference branch, a comparison and output circuit and a pre-charging enhancement circuit. The storage branch is used for converting state of a variable resistor in a memory cell into corresponding voltage signal Vmat; the reference branch is used for converting reference current into corresponding reference voltage Vref; the comparison and output circuit is used for comparing the voltage signal Vmat with the reference voltage Vref, and outputting standard logic high level or low level corresponding to low or high resistance state of the variable resistor; and the pre-charging enhancement circuit is used for communicating the storage branch and the reference branch during the pre-charging stage. According to the RRAM sensitive amplifier, a function of reading state of the variable resistor in the RRAM memory cell can be successfully realized; with the pre-charging enhancement function, the time of the pre-charging stage is shortened, and consequently, the whole data reading cycle is shortened, data reading speed is increased, and data throughout of the memory is improved. Result of simulation verification shows that data reading cycle is shortened by 10ns-15ns as compared with the data reading cycle in the traditional scheme in the scheme of the invention.
Owner:XI AN UNIIC SEMICON CO LTD

Isolated-type photovoltaic grid-connected inverter with dual-branch structure and working method of same

ActiveCN105305496AMonitor communication in real timeImprove Security Response SpeedSingle network parallel feeding arrangementsPhotovoltaic energy generationFull bridgeDual core
The invention discloses an isolated-type photovoltaic grid-connected inverter with a dual-branch structure and a working method of the same. The inverter comprises a main circuit, a dual-core DSP main control circuit and an auxiliary switch power source circuit, wherein the main circuit comprises a preceding-stage boosting module, a full-bridge topology inverter circuit and an output filtration module which are connected in succession, the preceding-stage boosting module comprises two branches, and each branch comprises an input filtration module and a high-frequency isolated boosting circuit; and the dual-core DSP main control circuit comprises a first DSP controller and a second DSP controller, the first DSP controller is used to drive the high-frequency isolated boosting circuit and realize tracking and control of a point with the maximum output power on a preceding-stage dual-way solar cell panel, the second DSP controller is used for full-bridge inverter control and grid-connected current inverter control, and the first DSP controller and the second DSP controller are connected by a GPIO module. The isolated-type photovoltaic grid-connected inverter with the dual-branch structure and the working method of the same disclosed by the invention adopt dual DSPs, can realize time-divided independent control, and can increase a safety response speed of a system. Meanwhile, the preceding-stage boosting module comprises the two branches and has the advantages of high efficiency.
Owner:东莞保力电子有限公司
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