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32results about How to "Overcoming scalability" patented technology

Optical network system, optical line terminal, optical network unit and optical distribution network device

The invention provides an optical network system, an optical line terminal, an optical network unit and an optical distribution network device. The optical network system comprises the optical line terminal, an optical distribution network and the optical network unit, wherein the optical line terminal is used for modulating and codling at least one path of descending signal subjected to the time-division multiple, outputting the coded signals after combining the coded signals into one path, receiving ascending signals and outputting the ascending signals after decoding the received ascending signals; the optical distribution network is used for outputting the received ascending signals after dividing the received ascending signals into multiple paths and outputting the received ascending signals to the optical line terminal after converging the received ascending signals into one path; the optical network unit is used for receiving the ascending signals output by the optical distribution network, outputting the received descending signals after decoding the received descending signals, coding a path of time-division multiplexing ascending modulation signals and outputting the coded signals to the optical distribution network; and the optical distribution network can decode the descending signals and code the ascending signals. The invention can realize a mixed passive optical network system based on time-division multiplexing technology and optical code division multiple access technology.
Owner:ZTE CORP +1

A CF recommendation method fusing matrix decomposition and user project information mining

The invention provides a CF (collaborative filtering) recommendation method fusing matrix decomposition and user project information mining. The CF recommendation method comprises the following steps:reading historical score data and project type data information of a user on an article; based on the FunkSVD model, optimizing and decomposing the user score matrix, and adding a similarity factor to calculate and generate a user score prediction matrix; calculating optimal similarity by optimizing CF users and project information occupying different proportions, predicting user scores, and generating Top-N recommendation lists. The method has the advantages that (1) the user scoring matrix is optimized and decomposed based on the FunkSVD model, and the trust factor is added to predict the user scoring matrix, so that the problem of low prediction accuracy caused by data sparseness of a traditional matrix decomposition model is relieved; (2) similarity is calculated based on the user information and the project information, and the problem of cold start caused by excessive dependence on historical data in a traditional recommendation algorithm is solved; and (3) a trust degree relationship between users is introduced, so that the recommendation precision and interpretability of a traditional CF recommendation algorithm are improved.
Owner:BEIJING UNIV OF CHEM TECH +1

Multi-input transformation-based dual-layer active balance circuit and implementation method

The invention discloses a multi-input transformation-based dual-layer active balance circuit and an implementation method. The multi-input transformation-based dual-layer active balance circuit comprises a microcontroller, bottom-layer balance units, a top-layer balance unit and switching relays; the microcomputer sends a path of PWM signals to control the bottom-layer balance units to work alternately under a charge state and a discharge state, so that energy balance between adjacent battery units can be realized; the microcontroller sends two paths of identical PWM signals to control the top-layer balance unit to work alternately under a charge state and a discharge state, so that energy balance between adjacent battery modules can be achieved; and the microcontroller sends two paths of switching signals to control the switching of the relays, so that the moving direction of energy balanced between adjacent modules can be controlled. With the multi-input transformation-based dual-layer active balance circuit and the implementation method of the invention adopted, the inconsistency of the battery units and the inconsistency of the battery modules can be effectively improved, and the problems of low balance efficiency, low balance speed and difficulty in modular expansion of a traditional balance circuit can be solved.
Owner:SHANDONG UNIV

Power line carrier communication chip established by utilizing singlechip

The invention relates to a power line carrier communication chip established by utilizing a singlechip. The singlechip and an internal high-speed timer are utilized to generate digital frequency modulating signals, carrier signals are output through an IO interface, amplified by a carrier power amplifier and coupled with a power line; an frequency modulating receiver of carrier signal is MC3371 or MC 3372; a receiving band-pass filter is formed by a C2, a T2 and the like; a limiter circuit is formed by a D1 and a D2; a C5, a R3 and the like are used for receiving the amplified carrier signalswhich enters the 16th terminal of a U2 through a C6 for first frequency mixing; first local oscillation frequency coming from a carrier chip is input into the first terminal of the U2 after limited by a R12, and the signals after frequency selection are input into the fifth terminal of the U2 and then amplified in a first intermediate frequency amplifier; a second local oscillation frequency is fed in the eighth terminal of the U2 through a R10 and a R11, output from the ninth terminal after being filtered by an amplifier inside the U2, then input into the band-pass filter from the tenth terminal, output from the eleventh terminal after being filtered and amplified by a filter, and transmitted to an AD converter of a U1; and the intensity of received signal is output from the thirteenth terminal of the U2.
Owner:昆明天龙经纬电子科技有限公司

Wavelength-allocation-based three-dimensional optical on-chip network router communication system and method

The invention relates to a wavelength-allocation-based three-dimensional optical on-chip network router communication system and method. The communication system employs a photoelectric mixing type 3D mesh network topological structure and a novel seven-port clog-free optical router capable of realizing multi-wavelength communication; and when the system is applied to a three-dimensional optical on-chip network, no wavelength conversion is needed. Because of utilization of the optical router, the consumed number of optical devices like micro ring resonators and waveguides and the like is reduced. Besides, according to the communication method, when a node of each layer sends out an optical signal, the employed wavelengths are identical; and optical signals with all wavelengths can be received at all layers, so that problems of severe network congestion, low link utilization rate, and limited expansibility due to utilization of single wavelength communication by the existing optical on-chip network architecture can be solved. Therefore, with the system and method, the network congestion probability can be reduced; the communication delay can be reduced; and the throughput capacity and network saturation point can be improved.
Owner:XIDIAN UNIV

Cognitive radio network anti-hostile interference cooperative broadcasting method based on non-coordinated frequency hopping

The invention provides a cognitive radio network anti-hostile interference cooperative broadcasting method based on non-coordinated frequency hopping, and relates to wireless network communication. The provided cognitive radio network anti-hostile interference cooperative broadcasting method based on non-coordinated frequency hopping is applied to a cognitive radio network on the premise of having no influence on expandability and communication efficiency of the network. The cognitive radio network anti-hostile interference cooperative broadcasting method based on non-coordinated frequency hopping is characterized in that firstly, a source node and a non-coordinated frequency hopping technology switched in a cognitive user random selection channel are adopted, so that the hostile interference of the radio network can be resisted, and meanwhile, the problems of poor expandability, low safety and the like caused by needing advance sharing of secret keys in a conventional frequency hopping technology are solved; and secondly, a cooperative broadcasting mechanism among cognitive users is introduced, namely, the cognitive users completing broadcast message receiving help the source node to transmit the broadcast message to other cognitive users in the network, and thus the communication efficiency of the cognitive radio network is improved.
Owner:XIAMEN UNIV

Ultrasonic combined adaptive anti-fatigue precision machining system and method of multi-curvature curved surface

The invention discloses an ultrasonic combined adaptive anti-fatigue precision machining system and method of a multi-curvature curved surface, and belongs to the field of mechanical precision machining common technologies. The ultrasonic combined adaptive anti-fatigue precision machining system and method of the multi-curvature curved surface aim to solve the technical problem of how to machine acurved surface of a key part with the multi-curvature curved surface while guaranteeing that the part has the anti-fatigue performance of a part with the multi-curvature curved surface. According tothe adopted technical scheme, the ultrasonic combined adaptive anti-fatigue precision machining system structurally comprises a flexible grinding head device and a control unit. The control unit is electrically connected with and has control over the flexible grinding head device, an ultrasonic coupling agent circulation structure and an impact vibration structure. The flexible grinding head device is used for machining the multi-curvature curved surface of the part. The control unit is used for having control over the working state of the flexible grinding head device. The flexible grinding head device comprises a flexible adjustment box body, the ultrasonic coupling agent circulation structure and the impact vibration structure. The impact vibration structure is arranged in the flexibleadjustment box body. The interior of the flexible adjustment box body communicates with the ultrasonic coupling agent circulation structure. The invention further discloses the ultrasonic combined adaptive anti-fatigue precision machining method of the multi-curvature curved surface.
Owner:QILU UNIV OF TECH

Trusted platform module aiming at trusted embedded system

InactiveCN103927488AOvercoming the disadvantage of being difficult to expandEasy to testDigital data protectionPlatform integrity maintainanceTrusted Platform ModuleSoftware
The invention discloses a trusted platform module aiming at a trusted embedded system. The trusted platform module aiming at the trusted embedded system comprises a tdd1 module, a tpmd module, a tpmd-dev module, a coding and decoding module, a cryptology module, a storage module and an executing engine module. The trusted platform module is provided with seven modules including the tdd1 module, the tpmd module, the tpmd-dev module, the cryptology module, the storage module and the executing engine module, in practical use, the modules are compiled and transplanted into an embedded system platform, no special hardware conditions are required, and the defect that the trusted platform module is hard to expand when a trusted embedded computation platform based on a physical TPM (trusted platform module) is overcome. Every module of the trusted platform module is encoded by software, easiness in realization, modification and expanding is achieved, and the problems of complexity in realization in a hardware manner and difficulty in expanding of the trusted platform module are solved; an entity can access to the trusted platform module in tdd1, tpmd and tpmd-dev manners, the access manners are flexible, and functions of the trusted platform module are easy to test and manage.
Owner:XIDIAN UNIV

Computer software system for processing diagnosis process

ActiveCN104331632AComplete coverage of medical proceduresCovering various diseasesSpecial data processing applicationsComputer moduleClinical pathway
The invention discloses a computer software system for processing a diagnosis process. The problems of narrow medical process coverage, nonstandard and abnormal properties of the present system are solved. The computer software system comprises a workflow file input module, a moveable execution control module, an output interface module, a workflow file analyzing module, a workflow instancing module, an engine interactive and managing module and an engine scheduling and executing module. The computer software system for processing the diagnosis process is connected with an external client through a distributed network; the workflow instancing module, the moveable execution control module, the engine interactive and managing module and the engine scheduling and executing module are utilized to schedule the execution of the diagnosis process; the workflow file input module and the workflow file analyzing module are utilized to introduce and analyze the workflow; the output interface module is utilized to outward output process executing data. The computer software system combined with the clinical pathway, the workflow engine and the rule engine can supply wide-coverage and standard diagnosis process control and management to medical personnel.
Owner:西安电子科技大学青岛计算技术研究院

Software implementation method and system of SOC chip, electronic equipment and storage medium

The invention discloses an SOC chip software implementation method and system, electronic equipment and a storage medium, and the method comprises the steps: presetting physical information corresponding to each peripheral device, so as to obtain a corresponding relation; acquiring current physical information; identifying the current peripheral device according to the acquired current physical information of the current peripheral device and the corresponding relationship; and configuring the current peripheral device. By presetting the corresponding relation between the peripheral device andthe physical information, the SOC chip can identify the current peripheral device according to the current physical information and the corresponding relation when being powered on. According to themethod, the defects of high cost, poor flexibility and low expandability caused by configuring peripheral devices in a macro definition mode in the prior art are overcome; the currently used peripheral device is accurately identified through one software mirror image file, and the corresponding peripheral device can be further configured according to the identified peripheral device, so that the flexibility and the expandability of the electronic system are improved.
Owner:SPREADTRUM COMM (SHANGHAI) CO LTD

Fast Hadamard transform device and method

The invention discloses a fast Hadamard transform device and a fast Hadamard transform method. The device comprises a control signal generating unit and a plurality of stages of computing units, wherein the control signal generating unit is used for generating control signals and outputting a corresponding control signal to each stage of computing unit; the plurality of stages of computing units are used for performing butterfly computation on input signals according to the control signals and outputting fast Hadamard transform results; each stage of computing unit comprises a first shift register, an addition and subtraction computing unit, a second shift register and a data selector, wherein the first shift register is used for delaying one input signal and outputting a delayed input signal; the addition and subtraction computing unit is used for receiving the non-delayed input signal and the delayed input signal and performing addition computation and subtraction computation on the non-delayed input signal and the delayed input signal to obtain an addition computation result and a subtraction computation result; the second shift register is used for delaying the subtraction computation result and outputting the delayed subtraction computation result; and the data selector is used for receiving the control signal and selectively outputting the addition computation result or the delayed subtraction computation result according to the control signal.
Owner:北京韦加航通科技有限责任公司

Video signal real-time intercepting, processing and displaying method and device

The invention provides a video signal real-time intercepting, processing and displaying method and device. The video signal real-time intercepting, processing and displaying device comprises a video signal intercepting device, a video signal collecting device, a signal processor, a video signal generator and a displaying device, wherein the video signal intercepting device is used for intercepting a video signal outputting by an electronic device to the displaying device; the video signal collecting device is used for collecting the video signal and converting the video signal into digital video data; the signal processor is used for performing real-time signal processing on the digital video data; the video signal generator is used for converting the digital video data subjected to the real-time signal processing into a video signal capable of driving the displaying device to perform display; the displaying device is used for displaying the output video signal subjected to processing. The invention further provides the video signal real-time intercepting, processing and displaying method. By means of the video signal real-time intercepting, processing and displaying method and device, data output by the specific electronic device to the displaying device can be extracted in real time, functions and applications of the existing device can be expanded by performing real-time signal processing on the data, and development of specific real-time applications based on the display data of the device is achieved.
Owner:INST OF ELECTRONICS CHINESE ACAD OF SCI
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