76results about How to "lower latency" patented technology

Methods, systems and computer program products for document sharing in collaborative electronic meetings. Exemplary embodiments include a method for control of documents in a collaborative interaction, the method including establishing an out-of-band channel between a first participant and a second participant in the collaborative interaction, transferring a copy of a document on the out-of-band channel between the first participant and the second participant, transferring a command issued on the document by the first participant on an in-band channel established between the first participant and the second participant, invoking the command by the second participant on the copy of the document by the second participant and displaying the result of invoking the command to the second participant.

The invention discloses a signing and decrypting method and system applied to cloud computing and based on an SM2 algorithm. Specifically, two communicating parties store some private keys respectively, operation of signing, decrypting and the like can be carried out on information only when the two parties unite, the two communicating parties can not obtain any information about the private key of the opposite side, and therefore under the circumstance that an attacker invades any party, signatures can not be forged, or ciphertexts can not be decrypted, so that the safety of the private keys in the cloud computing environment is improved; moreover, in the signing and decrypting processes, the application requirements for low delay and less interaction in the cloud computing environment can be met with less interaction needing to be carried out between the two communicating parties.

The invention discloses a business indication method, a monitor window expanding method, a dormant parameter adjusting method, a method for terminating a monitor window and a method for quitting a dormant mode, wherein the business indication method comprises the following steps that: a base station transmits a business indication message to a terminal under the situation that the downstream business to be transmitted is determined, and the business indication message is used for indicating one or more terminals to continuously receive the downstream business within one or more continuous dormant periods. Through the above processing, the consumption of resource can be saved, and the delay of the business data transmission can be shortened.

The invention discloses an FC-AE-1553 data exchange mode design method, an FC-AE-1553 data exchange mode network control method and an FC-AE-1553 data exchange mode energy saving method. According to the invention, all levels of the FC-AE-1553 protocol stack support the passive star topology, and 10 data exchange modes of the FC-4 level are compatibly designed according to 3 categories; besides, a method of "binary decision and cut-through forwarding" is proposed in a transfer mode to reduce the delay of data forwarding. The invention further provides a command time-scale control method of "timing inquiry and asynchronous processing", and the method can effectively process the terminal fault self-inspection and further improve the reliability of the network. The invention further provides two methods of a "half-sleep energy-saving mechanism" and a "total-sleep energy-saving mechanism" to reduce the network terminal power consumption. When a passive optical fiber coupler is used in the network, due to the passive characteristics of the coupler, when the two methods are adopted, the network system power consumption and the networking cost can be greatly reduced, and the irradiation resistance can be enhanced.

The invention discloses a method and a device for switching a video stream. The method comprises the following specific steps: if the play request information of a video sent by a terminal is received, obtaining the video stream of the video, wherein the video comprises a video stream of a first picture group frame number and a video stream of a second picture group frame number, and the first picture group frame number is less than the second picture group frame number; sending the video stream of the first picture group frame number to the terminal, searching for a key frame in the video stream of the first picture group frame number, and extracting the decoding timestamp of the key frame; searching the video stream of the second picture group frame number to determine whether a frame with the same decoding timestamp exists; if the frame with the same decoding timestamp exists, further detecting whether the frame is the key frame; and if the frame is the key frame, sending the video stream of the second picture group frame number to the terminal. Through the way, low delay of video play is guaranteed, and the picture quality of the video is improved.

The invention discloses a mobile-device-oriented service cache system architecture and development method. Operation results and download data of a server are cached by achieving a caching system which is located on a mobile client and a cloud corner, calling times of a remote end service are reduced, accordingly the operation cost of the entire system is lowered, and the execution efficiency is improved. Simultaneously, the caching system is achieved on a mobile portable device end, and data required to be uploaded and downloaded in the mobile device end are cached at the same time. Under the condition that the remote end service is unusable caused by an abnormal network, cached hot download data can be guaranteed to be usable at any time, cached upload data can guarantee that important data collected by the mobile end are not lost when the network has failures, and normal operation can be restored when the service is usable.

Method and apparatus are provided for improved connection of devices and lower latency of communications between devices of a massively parallel network. In particular, method and apparatus are provided for cross-bar switches, a multiple protocol interface device, a low latency upper communication protocol layer, addressing and remote direct memory access over a massively parallel network.

An embodiment of the invention discloses a service authentication key generating method which comprises the following steps: generating a prepared key in the service authentication key hierarchy which is effective in a preset life cycle by a user device and key generator with trust relationship; and generating a service authentication key in the service authentication hierarchy sheared by user device and server according to the prepared key in the service authentication key hierarchy which is effective in the current life cycle when the user device accesses the service. The embodiment of the invention also discloses a service authentication key generating system, a user device and key generator. The method, system and device disclosed by the embodiment of the invention have the advantages of simplifying the generating mode of service authentication key, reducing the delay of server access, and avoiding the condition that two authentications are executed in each accessing.

The invention provides a method for detecting a rotation state of a rotation part. The method is used for detecting two square wave signals with identical cycles and different phases output through a waveform generation circuit when the rotation part rotates. The method comprises the steps as follows: controlling a processor to generate a rising edge interruption and a falling edge interruption respectively according to a rising edge and a falling edge of the first square wave signal; detecting a level of the second square wave signal by the processor when the interruptions are triggered, and judging a rotation direction of the rotation part according to a set rule; and continuously twice generating interruption time intervals by a timing processor according to the first square wave signal, and calculating a rotation speed of the rotation part in combination with a rotation angle of the rotation part within the time intervals. The invention further provides a corresponding device. By implementing the scheme of the invention, a detection speed of the rotation state of the rotation part can be accelerated and burden of the processor is reduced.

The invention discloses a virtual machine dispatching algorithm based on a task load and the current work property of a virtual machine, wherein an interruption monitoring module is in charge of monitoring the current interruption frequency of the virtual machine, and is used for judging whether the work property of the virtual machine is in a CPU (central processing unit) dense type or I/O (input/output) dense type. A CPU monitoring module is in charge of monitoring the current CPU use rate of the virtual machine and is used for monitoring the task load of the virtual machine, a dispatching time segment of the virtual machine is calculated according to the current task load and the historical information in a certain time range, and in addition, a dispatcher is informed to update the time segment. A dispatcher module modifies a credit value dispatcher, so that the dispatcher interrupts the information provided by the monitoring module and the CPU monitoring module, different dispatching time segments are applied to the virtual machines with different work properties, the I/O request delay is reduced, meanwhile, the sufficient time is provided for handling the I/O request, and in addition, lower additional overhead is introduced. The modification of the three modules respectively occurs in the virtual machine monitor, so that good applicability is realized.

The invention discloses a low-delay all-digital monitoring system, which comprises a video signal coder, a computer and a display which are orderly connected, wherein the video signal coder comprises a camera module, an analog-digital conversion module, a CPU and DSP module and a first network control module, wherein the computer comprises a second network control module, a CPU module, a display control module and a front end control module. Except for compressing and coding or packing and transmitting YUV format signals, the CPU and DSP module further abstracts the YUV format signals into video signals, then packing an transmitting, the computer displays the video signals on the display after receiving the video signals, thereby the condition of the monitoring front end can be observed in real time, when the camera module needs to be adjusted, the control orders are analyzed by the CPU and DSP module, and results are transmitted to the camera module, and simultaneously, the camera module embodies the executing results of the control orders on the display. Video signals whose low-delay is the same with a simulated system can be seen from the control station, the complexity is reduced, the cost is low and the maintenance is easy.

The invention discloses an audio test method for an earphone microphone and a speaker of a mobile terminal. The method comprises that an audio test device sends test audio signals to the mobile terminal by measuring earpieces; the mobile terminal receives the test audio signals through an earphone microphone interface and generates audio signals according to the test audio signals; the speaker of the mobile terminal plays the audio signals; and the audio test device receives the audio signals generated by the mobile terminal and tests an audio channel of the mobile terminal according to the audio signals and the test audio signals. The invention further discloses an audio test system for the earphone microphone and the speaker of the mobile terminal. By means of the audio test method and the system for the earphone microphone and the speaker of the mobile terminal, an input channel of the earphone microphone and an output channel of the speaker of the mobile terminal can be tested; and test time is short, and the test cost is low.

The invention relates to a path selecting method in a multi-channel wireless mesh network and a device thereof. The method comprises the following steps: finding all paths between a source node and a target node; respectively using the number of maximum interference chains in the interference range of the path to multiply by a first weight alpha for all the found paths, adding the number of jumping steps multiplied by a second weight beta, then subtracting the addable number of channels multiplied by a third weight gamma, and obtaining path-selecting index values; selecting the path with the minimum path-selecting index value in all the found paths as the path between the source node and the target node. The invention can reasonably solve the problem of route selection in the multi-channel wireless Mesh network, and effectively improve the performances of delay, throughput and the like of the wireless Mesh network.

The invention relates to a hardware realization method for updating equivalent historical current source information in electromagnetic transient simulation of a power system. The method comprises the steps of storing an equivalent historical current source value updated by each functional module by utilizing an FIFO structure, reading the equivalent historical current source values from the FIFO structure, inputting the equivalent historical current source values into a double-precision floating point calculation adder to be calculated, storing the accumulated equivalent historical current source values corresponding to different network nodes by utilizing a build-in truel duel RAM of an FPGA, searching the empty situation of the RAM corresponding to the output result network node according to the outputted result of the adder, until all current source values in the FIFO are outputted completely, and storing all current sources after being added into the RAM corresponding to the network node. By utilizing the FIFO structure, the accumulation of the current source values can be completed by utilizing multiple periods, the delay is minimized, and the calculation precision is improved by adopting the dual-precision floating-point number.

The seek system comprises route seeking coprocessor, drive circuit, content-addressable memory and synchronous static memory. The route seeking coprocessor is a programmable chip, the content-addressable memory is connected with seeking coprocessor by means of drive circuit, and controlled by it. Said synchronous static memory is connected with route seeking coprocessor, and the reading and writing of the synchronous static memory is controlled by seeking coprocessor. Its maximum seeking rate can be up to 50 MPPS. Its maximum capacity can support 25K rate table entries, and can be expanded to1 M route table entries, it can make real time refresh, and can be applicable to IPv6 by utiting simple equipment.

The invention discloses a multi-channel video superimposition transmission method based on an FC-AV protocol. Multiple channels of video sources can be collected, each path is amplified or shrunk by ascaling algorithm to adjust the proportion of the foreground in the background; the location of the foreground in the background can be adjusted by configuring parameters; and a foreground image is fused into a background image to achieve video superimposition fusion. According to the method disclosed by the invention, a superimposed video is packaged into a data frame based on the FC-AV protocoland is sent through an optical fiber, thereby achieving high-bandwidth, high-reliability, low-delay and long-distance lossless transmission of the video.

The invention provides a method and device for processing LDPC encoding. The method comprises the steps of determining the number of RAMs according to the number of lines of a mother matrix of LDPC, sequentially writing information bits input every time and data bits read from RAM units of the RAMs corresponding to each line of the mother matrix every time into the RAM units of the RAMs corresponding to each line into the RAM units of the RAMs corresponding to each line in an iteration mode according to the value of information bits in each line of the mother matrix, and the step of outputting the data bits stored in the RAM units of the RAMs corresponding to each line until the last information bit of each line. By means of the method and device for processing the LDPC encoding, the problems that LDPC encoding in the prior art is low in encoding efficiency and narrow in applicable occasions, a corresponding encoder structure is complex and resources are wasted are solved, and the purposes that delay is small, the structure is simple, the handling capacity is large, and the generality is good are achieved.

According to the operation method of the distributed energy storage power station participating in the electric power auxiliary service market, the system adopted by the method is suitable for power grid coordination management. The electric energy transaction platform in the system is based on a B/S architecture, has the advantages of a multi-channel transaction function, high transaction speed and low delay, and the HyperLedger Fabric block chain subsystem in the electric energy transaction platform is low in power consumption and modular, so that free open transaction of distributed energystorage can be realized. Two-stage deployment of power grid resource unified scheduling distribution and multi-node platform transaction cooperation is adopted, and aiming at different requirements ofauxiliary service providers of a scheduling system of a power grid company and a distributed energy storage system, the power grid company and the distributed energy storage auxiliary service provider are organically combined through a transaction mode of a block chain; according to the auxiliary decision-making method, an auxiliary service optimization scheme can be formulated for a distributedenergy storage auxiliary service provider in time, and the yield of the distributed energy storage system participating in the power grid is maximized.

The invention discloses a mobile Internet based advertisement putting platform. The mobile Internet based advertisement putting platform comprises an advertisement putting system, a real-time online and offline system and a log monitoring system, wherein the advertisement putting system comprises an advertisement creation module, an advertisement preview module, an advertisement management module, an advertisement modification module, an advertisement confirmation module and an advertisement examination and verification module; and the log monitoring system comprises a log management module and a log monitoring module. Through the advertisement putting system, advertisements can be created, modified and confirmed, through management of the advertisements, the attention which the advertisements are given is recorded, an enterprise can fully know the advertisement putting effect, and a value reference is provided for later advertisement making; through the real-time online and offline system, the advertisements are monitored in real time, delays brought by offline advertisements are reduced, advertisement resources are saved, and the advertisement cost is decreased; and through the log monitoring system, errors in logs can be rapidly detected, and work personnel can be notified of the errors in the form of e-mails and short messages.

The invention relates to a micro-cloud node placement method based on a wireless metropolitan area network. The method comprises steps of selecting K access points from a wireless metropolitan area network to place micro cloud nodes; directly encoding the particles into access point serial numbers; optimizing algorithm based on particle swarm, firstly, initializing a batch of particles randomly,calculating the fitness value of each particle through a fitness function, recording the optimal value as the particle optimal value of the particle; meanwhile, selecting the individual with the optimal fitness value as a population optimal particle; recording the fitness value of the particle as the optimal value of the population particle; and performing mutation operation and excellent individual crossover operation on the particles during each iteration to obtain new particles, selecting an optimal value of each particle and an optimal value of population particles, entering the next generation, and repeating iteration to a preset threshold number of times to complete placement search of the micro-cloud nodes. By optimizing the placement of the micro-cloud nodes, the average response time of user tasks is better reduced, and high-efficiency and low-delay services are obtained.

The invention discloses a beam communication method, which comprises the steps that a base station/user equipment communicates with the opposite party by using a beam; whether the beam is abnormal ornot is judged; and the base station/user equipment uses a standby beam to communicate if the beam is abnormal. The invention further discloses a beam communication device. According to the invention,the beam communication method and device can give consideration to both anti-blocking performance and transmission performance, and realize anti-blocking beam communication with high performance and low delay.

The invention discloses a delay message processing method, which is executed in computing equipment and comprises the following steps of: receiving a delay message delivered by an application program,the message comprising an application identifier, a delay duration and a monitoring queue identifier; calculating to-be-triggered time of the delay message, storing the delay message and the to-be-triggered time in a data storage device in an associated manner, and inserting the delay message into a working time wheel or a buffer time wheel according to whether the to-be-triggered time is in a current preset period or a next preset period or not; taking out the delay message at the current moment from the working time round every other preset time, and sending the delay message to a to-be-consumed message queue, so that the application program performs monitoring processing; and when the current preset period time is over, the working time wheel and the buffer time wheel are exchanged, and a message of which the to-be-triggered time is in the next preset period is acquired from the data storage device and stored in the current buffer time wheel. The invention further discloses a corresponding system, computing equipment and a readable storage medium.

A device for collecting cells from a sample of biological fluid comprises first and second chambers (11, 3) that are releasably connected and which define a fluid flow path from the first chamber (11) to the second chamber (13). A porous membrane (14) is captivated between the first and second chambers (11, 13) when the first and second chambers (11, 13) are connected to each other, in the fluid flow path. An absorbent body (17) is positioned in close proximity to the downstream surface of the porous membrane (14), and a resilient member (18) is arranged to urge the absorbent body (17) towards the porous membrane (14). In use, a sample introduced into the first chamber (11) contacts the upstream surface of the porous membrane (14) and fluid is drawn through the porous membrane (14) and is absorbed by the absorbent body (17). Cells present in the sample are retained upon the upstream surface of the porous membrane (14). After separation of the first and second chambers (11, 13), the porous membrane (14) can be removed from the device for analysis of the deposited cells.

The invention relates to a forecasting and early warning automatic alarming apparatus and an automatic alarming method thereof based on lithium ion battery pack thermal runaway, in particular to a lithium ion battery pack thermal runaway automatic monitoring method based on an infrared thermal imaging technology. Thermal runaway in the warehousing storage and charging process is subjected to temperature alarming, and online monitoring and timely early warning are conducted on a lithium ion battery pack through online infrared thermal imagers. The forecasting and early warning automatic alarming apparatus involves a monitoring device part, a control part, an alarming device part and an auxiliary device part, wherein the infrared thermal imagers are adopted for the monitoring device part, the auxiliary device comprises a relay, the control part comprises a computer and a computer display, the computer display is connected with the computer, and program modules are arranged in the computer; the monitoring device part, the alarming device part and the auxiliary device part are connected with the control part separately through a USB interface. The lithium ion battery pack thermal runaway automatic monitoring method has the advantages that real-time online monitoring is achieved, the response is quick, and the operation is simple.

The embodiment of the invention provides a method for simulating dragging based on articulated naturality web. The method comprises an access server and an operation terminal connected with the accessserver. The method comprises the following steps of receiving a dragging instruction sent by the operation terminal by the access server; generating a mouse down event, a mouse moving event and a mouse up event in response to the dragging instruction; sequentially executing the mouse down event, the mouse moving event and the mouse up event. According to the invention, remote control can be realized rapidly. During remote control, remote dragging can be realized through interface dragging. According to the remote control method and device, transmission of mouse operation instructions can be reduced during dragging. The remote dragging effect of a single instruction is achieved. Meanwhile, the delay of remote control can be reduced. The phenomena of picture blockage and insensitivity occurring in remote control are reduced. The sensitivity of remote control is improved, and the use experience of a user is improved.

The invention provides a robot-based remote control instruction transmitting method. The robot-based remote control instruction transmitting method is characterized by comprising the following steps: establishing a corresponding connection relation between a robot terminal and a user terminal; constructing a direct transmission channel between the robot terminal and the user robot; judging whether the direct transmission channel is successfully constructed by virtue of the user terminal, and if the direct transmission channel is successfully constructed, directly sending instructions to the robot terminal in real time by virtue of the user terminal; and if the direct transmission channel is not successfully constructed, transmitting the instructions by virtue of a server transfer channel. By utilizing the direct transmission channel and the server transfer channel, the high-safety, low-delay and high-reliability transmission of the instructions are realized.

The invention provides an image processing method, an image processing device and electronic equipment for a cloud true machine system. The image processing method comprises the following steps of acquiring continuous image frames displayed on a screen in real time; caching the collected continuous image frames; rendering the image frame at the current moment in the cached continuous image framesat every preset time interval, and outputting the image frame at the current moment after rendering; and carrying out hardware encoding on the rendered image frame at the current moment, and generating and outputting video streams corresponding to the continuous image frames displayed on the screen. The coding of screen images is executed by utilizing a hardware encoder at an electronic equipmentend, so that the delay of the cloud true machine system is reduced, the hardware requirements for local processing equipment are reduced, the number of the electronic equipment which can be accessed by the single remote processing equipment is increased, and the deployment cost is reduced. In addition, the electronic equipment directly transmits the video streams to the local processing equipment,compared with image data under the same definition, the requirements for the transmission bandwidth are reduced.

The invention discloses a task scheduling method and system based on task stealing. The method comprises the steps that a task dependence graph is constructed, and a dependence point serves as a callback function to be registered into a callback container of a depended point; a lock-free double-end queue is allocated to threads in a thread pool respectively and is emptied, and root nodes are put at the bottoms of the lock-free double-end queues of the threads in a polling mode; if the lock-free double-end queues of the threads are not empty, the nodes are taken out of the bottoms of the lock-free double-end queues and are executed; if the lock-free double-end queues of the threads are empty, the nodes are stolen from the tops of the lock-free double-end queues of other threads, the stolen nodes are pressed into the bottoms of the lock-free double-end queues of the threads and are taken out for execution; after execution of all node tasks is completed, the in-degrees of the nodes in the task dependence graph are recovered to original values, and blockage to a main thread is ended. The task scheduling method and the system are oriented to large task-level parallel application programs, and the performance of traditional task-level parallel application programs can be effectively improved.

A method (400) in a radio network node (220) of a wireless communication system (200) for selecting a MSG3 size for a User Equipment (UE) (230) that is performing handover from a serving network node (210) to a neighbour network node (220) is disclosed. The method (400) comprises receiving (S402) 5 measurement information related to the UE (230) from the serving network node (210). The method (400) comprises selecting (S404) the MSG3 size based on the measurement information. The method (400) further comprises transmitting (S406) the MSG3 size to the UE (230), based on which UE related information is transmitted to the neighbour network node (220).

The invention relates to a method and a system for realizing high-resolution analog-to-digital conversion by a low-resolution ADC (Analog to Digital Converter), which aim at a CCD (Charge-coupled Device) camera. The method comprises the following steps: carrying out subsequent preprocessing on a CCD analog signal generated by an FPA (Focusing Plane Assembly); amplifying a CCD analog video signal after the preprocessing to obtain an amplified video signal; carrying out analog-to-digital conversion on the amplified video signal to obtain a low-bit ADC quantization result; and converting the low-bit quantization result into high-bit quantization result. The invention provides the method and the system for realizing high-resolution analog-to-digital conversion by the low-resolution ADC, whichaim to the CCD camera, and have small delay, high transmission ratio, strong anti-interference capability, high SNR (Signal to Noise Ratio) and wide application range.