53results about How to "Improve data transfer bandwidth" patented technology

A method and system for implementing weighted fair flow control on a metropolitan area network. Weighted fair flow control is implemented using a plurality of metro packet switches (MPS), each including a respective plurality of virtual queues and a respective plurality of per flow queues. Each MPS accepts data from a respective plurality of local input flows. Each local input flow has a respective quality of service (QoS) associated therewith. The data of the local input flows are queued using the per flow queues, with each input flow having its respective per flow queue. Each virtual queue maintains a track of the flow rate of its respective local input flow. Data is transmitted from the local input flows of each MPS across a communications channel of the network and the bandwidth of the communications channel is allocated in accordance with the QoS of each local input flow. The QoS is used to determine the rate of transmission of the local input flow from the per flow queue to the communications channel. This implements an efficient weighted bandwidth utilization of the communications channel. Among the plurality of MPS, bandwidth of the communications channel is allocated by throttling the rate at which data is transmitted from an upstream MPS with respect to the rate at which data is transmitted from a downstream MPS, thereby implementing a weighted fair bandwidth utilization of the communications channel.

A Wideband Intercom and Secure Packet Radio (WISPR) system includes a state-of-the-art digital, fully programmable communication system that provides internal and external communication to the operators of any type of vehicle. The WISPR system includes a dedicated secure radio with anti-jamming capabilities in order to support a Wireless Local Area Network (WLAN) and is able to provide voice and data communication over radios, analog wires and data/voice over field telephones and tank telephones. The system supports a variety of user specified operational requirements (e.g. hierarchy plans, closed group conference, wired or wireless remote radio control, tactical data reception, independent listen/talk functions) and has the capacity for dynamic adaptation to field requirements and the potential for expansion in order to fulfill the future needs of the Armed Forces. The WISPR system configuration is adaptable according to the type of platform and the particular operational requirements for a specific application.

The invention discloses a convolutional neural network acceleration engine, a convolutional neural network acceleration system and a convolutional neural network acceleration method, and belongs to the field of heterogeneous computing acceleration, wherein the physical PE matrix comprises a plurality of physical PE units, and the physical PE units are used for executing row convolution operation and related partial sum accumulation operation; the XY interconnection bus is used for transmitting the input feature image data, the output feature image data and the convolution kernel parameters from the global cache to the physical PE matrix, or transmitting an operation result generated by the physical PE matrix to the global cache; the adjacent interconnection bus is used for transmitting anintermediate result between the same column of physical PE units; the system comprises a 3D-Memory, and a convolutional neural network acceleration engine is integrated in a memory controller of eachVault unit and used for completing a subset of a convolutional neural network calculation task; the method is optimized layer by layer on the basis of the system. According to the invention, the performance and energy consumption of the convolutional neural network can be improved.

The invention provides a mobility-prediction-based wireless fidelity (WiFi) speed self-adapting selecting method, which belongs to the communication field. Firstly a vehicle WiFi device continuously detects the strength of access point (AP) signals nearby, the strength value of the detected AP signal is converted to a corresponding distance value, and the movement trend of the vehicle WiFi deviceis predicted according to a plurality of distance values; and a data speed of the WiFi device is selected according to the movement trend of the vehicle WiFi device and a distance-data speed table which is obtained through the experiment. By the method provided by the invention, the shaking of the data speed of the WiFi device during the moving process of a vehicle can be reduced, and the data transmission efficiency can be improved.

The invention discloses a byte-based filtering and policing tube system and a byte-based filtering and policing tube method of an avionics full duplex switched Ethernet (AFDX) switch, mainly solves the problem of frame loss under the condition of larger jitter and different frame lengths. The system comprises a cache, a lookup table, a filtering module, a policing tube module and a determination module, wherein the cache stores data frames and extracts the virtual link (VL) and the frame information of the data frames; the VL is used for searching for the filtering parameters of the data frames in the lookup table; the filtering parameters are compared with the frame information in the filtering module to determine whether the data frames meet a filtering requirement; a byte leaky bucket algorithm is used for controlling data frame traffic in the policing tube module simultaneously; and finally, the determination module is used for determining whether the data frames are permitted to enter a switched network. According to the invention, the implementation method is simple, system resources are saved, the pass rate of the data frames is high, the network switching performance can be improved, and the system and method can be used for filtering data frames and controlling flow rate in an AFDX.

The invention discloses bus equipment, comprising two composition structures and sub equipment including a forward subsystem and a backward subsystem, wherein the two composition structures are used for transmitting data in two transmission directions; the forward subsystem and the backward subsystem have the same connecting relationships; the forward subsystem comprises a forward input saving module, a forward transmitting module, a forward receiving and saving module, a forward output module, a forward feedback control module and a forward instruction control module; and the backward subsystem comprises a backward input saving module, a backward transmitting module, a backward receiving and saving module, a backward output module, a backward feedback control module and a backward instruction control module. The bus equipment can simultaneously realize the work with high speed and high reliability and the capacity of bus nodes is higher.

The invention provides a multichannel synchronization and offset controllable circuit in a single logic chip. The multichannel synchronization and offset controllable circuit comprises a main unit interface module, a DMA (direct memory access) module, a configuration table transmitting and receiving list DPRAM (dual port random access memory) module, a data DPRAM module, an AS5643 protocol processing module and a global control module. The configuration table transmitting and receiving list DPRAM module, the data DPRAM module, the AS5643 protocol processing module can realize three AS5643 node functions, a global register can dispatch uniformly and start transmission, synchronous control of the three nodes is realized, and the multichannel synchronization and offset controllable circuit can be realized and used for AS5643 protocol node communication.

A method and system for high speed bussing in microprocessors and microelectronic devices is disclosed. The method and system implement a type of differential bus with distributed bus pre-charge units designed to decrease bus pre-charge time. The method and system utilize a universal self-tracking clock signal to determine the minimum required bus pre-charge time. The time saved by decreasing the bus pre-charge time can be directly applied to the bus evaluation period thereby increasing system performance and reliability.

The invention discloses a piece of power line communication equipment and a power line communication method, and relates to the field of terminals. The power line communication equipment comprises a power line communication interface, a universal serial bus interface and a signal coupling unit. The power line communication interface is connected with the signal coupling unit and is used for transmitting a signal to the signal coupling unit. The signal coupling unit is used for coupling or decoupling the signal. The universal serial bus interface is used for supplying power to the power line communication equipment. According to the invention, weak power supply is carried out based on the USB interface. On one hand, compared with strong power supply, power consumption of the equipment can be reduced, fewer transformers are required, the device cost is reduced, the product size is reduced, the difficulty in wiring design is reduced, the access threshold for equipment design and production is lowered, and the rise of the power line communication market is benefited. On the other hand, power supply interfaces are separated and an information interface is independently arranged, conductive interference on the power line communication interface is reduced, and the equipment can easily meet the electromagnetic compatibility certification requirements.

The invention relates to the technical field of wireless blue portable speakers.A modular stereo speaker is disclosed, includes a primary speaker and several secondary speakers, the main loudspeaker and the secondary loudspeaker, and the secondary loudspeakersare connected through separable fixing mechanisms. The main sound box comprises an internal power module, an audio input module, an audio emission module, a power amplifier module and a horn. After receiving the audio signal, the audio input module transmits a part of the audio signal to the horn external amplifier output through the power amplifier module, and transmits a part of the audio signal through the audio emission module. The subloudspeaker box comprises a power module, an audio receiving module, a power amplifier module anda horn arranged in the subloudspeaker box. The audio receiving module receives the audio signal emitted by the audio emitting module of the main loudspeaker box, and sends the audio signal to the external amplifier output of the horn through the power amplifier module. The invention changes the wireless transmission mode, realizes modular separation and combination, the modular stereo speaker notonly is portable but also has good stereoscopic field effect.

The invention relates to a method for designing an optical fiber bus based on an Ethernet passive optical network. The method includes a configuration method of the Ethernet passive optical network, a three-tier exchange mechanism, a topological graph of optical fiber bus design, a bus controller, access units, a photovoltaic conversion module, optical dividers and optical fibers. In the prior art, foreign standards are adopted for all technologies related to the optical fibers, and due to the fact that the technologies and chips used for realizing the technologies belong to an embargo range which the west imposes on China, China can not directly adopt the standards. The novel method replaces an abroad homogeneous technology, and a set of autonomous standard systems of optical fiber bus products is established in China. Therefore, the optical fiber bus technology can be widely applied to the fields of aerospace, aviation, a military industry, an electronic industry and the like.

The invention provides a display control method, a display control system, electronic equipment and a storage medium. The method comprises the steps: determining at least one piece of target view angle image information to be displayed from multiple pieces of view angle image information based on at least one piece of target view angle information, wherein the target view angle image information corresponds to the target view angle information; and dividing the target view angle image information into at least two groups of data, transmitting the data to a display panel through at least two target data channels, further enabling the display panel to display the data based on the received data. The display control system comprises a plurality of data channels in one-to-one correspondence with the plurality of pieces of view angle image information, the at least two target data channels comprise a data channel corresponding to the target view angle image information and at least one multiplexing data channel not corresponding to the target view angle image information. According to the scheme, the number of data channels and the data transmission bandwidth are increased, and the refresh rate and the display effect can be improved.