38results about How to "Improve data communication efficiency" patented technology

The invention relates to a flat machine numerical control system based on a field programmable gate array (FPGA) high-speed communication method. The flat machine numerical control system comprises a management layer with an ARM module, a coordination layer with a DSP module and an FPGA module and an execution layer, and is characterized in that a dual-port RAM high-speed communication module is arranged between the ARM module and the FPGA module and is provided with independent valid read/write pins. The invention has the following obvious substantive characteristics: the dual-port RAM high-speed communication module is arranged and is provided with the independent read/write pins, so that signals of each layer are matched and are prevented from holding time and conflicting; and the data communication efficiency between the management layer and the coordination layer is improved by a method of adopting abundant logical resources in the FPGA module to realize dual-port RAM high-speed communication in a software programming mode, thus the weaving efficiency is improved. By adopting the control method of the control system, the communication speed is improved, and the control system has the characteristics of strong anti-interference performance, good generality and the like.

The invention discloses a data communication method for electronic shelf labels, which comprises the following steps: when a data transmission instruction sent by a server is received, calling a wireless transceiving device to send a wake-up data packet to all the electronic shelf labels in a wireless working mode so as to wake up the electronic shelf labels; receiving a broadcast sent by the electronic shelf label in a Bluetooth working mode, and establishing a communication connection with a target electronic shelf label according to the broadcast; and carrying out data communication with the target electronic shelf label in the Bluetooth working mode. The data communication efficiency of the main-end device and the electronic shelf label can be improved, and the power consumption of theelectronic shelf label is reduced. The invention also discloses a data communication system of the electronic shelf label, a computer readable storage medium, a communication main end and the electronic shelf label, which have the above beneficial effects.

The invention relates to the embedded technology filed, particularly to dual-core namely the ARM and the DSP data communication method for an embedded type numerical control system. The RAM (Random Access Memory) of the embedded type numerical control system is divided into four parts namely a LINUX operating system for the ARM terminal, a BIOS pseudo operating system for the DSP terminal, communication sharing and communication softwares; the communication sharing is used for storing communication data; initialization is performed on the ARM terminal and the DSP terminal to set up a shared memory pool, set up critical section management objects which enable the ARM terminal and the DSP terminal mutually exclude read-write communication data and set up a handshake protocol; when the ARM terminal or the DSP terminal secretly accesses a shared memory area by utilizing a mutual exclusive lock and obtains the mutual exclusive lock, read-write is directly performed on the communication data, and the mutual exclusive lock is released when the read-write is achieved. According to the dual-core data communication method for the embedded type numerical control system, the hardware costs are reduced due to the fact that extra hardware chips are not used; software transportation costs are reduced due to the fact that a third-party software can be transported without modification; block data zero copy is achieved and data communication efficiency between multicores are improved due to the fact that the data transmission is achieved through communication sharing and messages between cores.

The invention relates to a KVM (kernel-based virtual machine) virtualized service system and a data communication method for the same. The virtualized service system comprises a host operation system and more than one client operation system, wherein a KVM virtual machine runs on the host operation system and is provided with an inter-area communication module; each client operation system is provided with an area service module; and each area service module is provided with a data transmission buffer area which is shared by the inter-area communication module of the host operation system. When one of the client operation systems is provided with an equipment driving program, data of the area service module in the client operation system are interacted with data of the equipment driving program. Moreover, the inter-area communication module of the host operation system copies data among the data transmission buffer areas of the different client operation systems back and forth, so that data communication between the client operation systems is realized, the client operation systems can visit the equipment driving programs in the corresponding client operation systems, and equipment resources are shared.

The invention provides a SoC system-on-chip and a peripheral bus switching method thereof, comprising an AHB bus, an APB bus, a DSP EMIF interface, a DSP address decoding logic, a data interaction unit, an EMIF-AHB/APB bus bridge circuit, AHB slave, APB slave, bus switch controller; The DSP address decoding logic transfers the on-chip access of the DSP to the bus switching controller, the data exchange unit and the EMIF through the access address of the EMIF interface respectively, and transfers the on-chip access of the DSP to the bus switching controller, the data exchange unit and the EMIF-AHB/APB bus bridge circuit. The invention realizes the direct communication between the chip and the off-chip RISC processor, and improves the data communication efficiency. Compared with the on-chipperipherals accessed through the data interaction RAM, it has higher access efficiency. At the same time, on-chip processor core and off-chip DSP form a dual-master mechanism of on-chip peripherals, which makes the system have higher reliability.

The invention discloses a serial port driving system based on a PCI bus. The system comprises equipment to be driven, a PCI module, an FPGA control module and a serial port link module. The equipmentto be driven is connected with the PCI module through a PCI bus. The FPGA control module is connected with the PCI module and the serial port link module, the serial port link module is connected withexternal communication equipment through a serial port, the PCI module comprises a PCI bus controller and an EEPROM, the PCI bus controller is used for connecting a PCI bus and a local bus, and the EEPROM is used for storing configuration information of an internal register of the PCI bus controller; the FPGA is used for controlling a read-write time sequence of the serial port controller, resetting the serial port controller and interrupting a switch serial port; and the serial port link module is used for data interaction with the FPGA and external communication equipment so as to realize communication between the equipment to be driven and peripheral serial port communication equipment through a PCI bus.

The invention discloses a data communication method and device. The method comprises the following steps: when transmitting end equipment performs data communication with receiving end equipment, acquiring an equipment identification code, accumulated running duration and current communication times with the receiving end equipment of the receiving end equipment, and generating a first dynamic keyin real time according to the equipment identification code, the accumulated running duration and the current communication times; encrypting the communication data to be sent according to the firstdynamic key by a sending end device to obtain encrypted data; and sending the encrypted data to receiving end equipment by a sending end equipment, wherein the receiving end equipment is used for generating a second dynamic key after receiving the encrypted data and decrypting the encrypted data by adopting the second dynamic key to obtain communication data, and the second dynamic key is the sameas the first dynamic key. The technical problem that in the prior art, in the communication process between the intelligent device and the server, the data security is low is solved.

The invention discloses a data collection and transmission method in a distributed measurement and control system. The method comprises the following steps that S1, data collection modules are additionally arranged in a front-end data transceiver and a rear-end data transceiver, data is actively and orderly acquired from each data supply end in advance through the data collection modules and the data is buffered, before a data demand end requests the data, the required data is collected, and when the data demand end requests the data of each data supply end in a polling mode, the rear-end datatransceiver takes out the existing data from a buffer area and gives a response as fast as possible; and S2, three data communication subsystems are formed between the data supply ends and the front-end data transceiver, between the front-end data transceiver and the rear-end data transceiver and between the data demand end and the rear-end data transceiver. According to the method, the polling period in the distributed measurement and control system is greatly shortened, the overall efficiency of group data transmission is improved, and wired communication can be rapidly changed into wireless communication at low cost.

The invention discloses a communication interface construction method and device, computer equipment and a storage medium. The method comprises the steps that a message body file is acquired, description information of the message body file corresponds to each communication class and comprises a service identifier and a structural body, and the structural body comprises a plurality of function identifiers and a plurality of message bodies associated with the function identifiers, and wherein each message body is used for describing configuration information required by the access interface of the function identifier associated with the message body; constructing a corresponding interface class file according to the message body file; constructing an implementation class file of the access interface according to the interface class file; and adding a protocol adapter to the computer program quoting the access interface, serializing a calling instruction of the computer program to the access interface into binary data during running of the protocol adapter, and transmitting the binary data to a remote server so as to realize remote calling of the corresponding access interface. According to the method and the device, the running and transmission efficiency and security of the computer program called based on the RPC can be improved.

The invention discloses a method, a module and a system for data communication in integrated circuit simulation, and a storage medium. The method comprises the steps of: transmitting data to a next simulation operation module B when the data is updated in a simulation operation module A in each clock period, dividing all the data into a plurality of fixed-length data sets in sequence, and performing position calibration and sorting on the data sets in sequence to form calibration parameters; if the data in one data set is updated, calibrating the data set as an updated data set; and then, forming a data packet by the calibration parameters and the data set calibrated to have the update, and transmitting the data packet to a simulation operation module B. According to the method, data updating does not exist in each clock period S, the reason why all the data are updated at the same time is avoided, the data size is compressed by reducing duplicated data sending, and therefore the transmission efficiency is improved, and the bottleneck problem of the transmission efficiency is solved.

The invention discloses a method and a device for accessing a cache. The method comprises the following steps of dividing a cache region of the first process for providing data to the second process into a plurality of cache blocks, when a target process initiates an access request to the cache region; selecting a target cache block from a plurality of cache blocks of the cache region, judging whether the target cache block is in a locked state or not; if the target cache block is in the locked state, executing the step 2; if so, the target cache region does not need to be switched to the non-locked state all the time; another cache block can be selected from a plurality of other cache blocks to serve as a target cache block; and returning to execute the step of judging whether the obtained target cache block is in the locked state or not until the target cache block which is not in the locked state currently is found from the cache blocks, so that a plurality of processes respectivelyaccess different cache blocks in the same cache region at the same time, and the inter-process data communication efficiency is improved.

The present invention is provided with one main station and a plurality of substations. After transmitting data addressed to all substations, the main station transmits a message addressed to all substations to query whether reception was normal. When unable to receive data normally, the substations transmit a response message to the query message, but do not transmit a response message when data reception was normal. The time for confirming that transmission was normal or abnormal can be shortened by the main station transmitting data addressed to all substations only one time, and by the substations transmitting response messages only in the case of abnormal reception.

The invention discloses a control circuit of a foot-type robot, which is used for controlling legs of the foot-type robot. The circuit comprises a power supply module for supplying power to the legs of the foot-type robot; an information transmission module which is used for providing control information for the foot-type robot; a power supply module which is electrically connected with the transfer module, wherein the power supply module supplies power to the transfer module, and the information transmission module is in data communication with the transfer module; and a plurality of execution modules which are electrically connected with the transfer module and are in data communication with the transfer module, wherein the execution modules move according to the information transmittedto the execution modules by the transfer module. By the adoption of the technical scheme, the number of integrally-installed signal plates of the foot-type robot is reduced, the data communication efficiency of the foot-type robot is improved, and the size of the foot-type robot is reduced.

The invention provides an APP management method based on a heterogeneous communication model and oriented to a terminal software platform. Communication among nodes accessing the terminal software platform follows a message bus mechanism based on the heterogeneous communication model. The APP management method comprises the steps: in response to an APP installation request, authenticating an APP installation package downloaded to the intelligent terminal, and if verification is passed, starting and executing the APP installation package; in response to the APP registration information, obtaining message interface information of a to-be-interacted APP of the registered APP, and defining a message interface of the registered APP according to the message interface information of the to-be-interacted APP; and starting APP protection mechanism. According to the invention, the problems of poor expansion flexibility and poor system reliability of the existing unified terminal software platform for various service APPs can be solved.

The embodiment of the invention discloses a direct-connected communication control method, a device and a mobile terminal. The method comprises the following steps: acquiring at least one data interaction record of a data interaction task between a first peripheral device and a second peripheral device by an AP; determining a data interaction reference parameter of the data interaction task according to the at least one data interaction record; and sending a direct connection control instruction to a communication controller when detecting that the data interaction reference parameter satisfies a preset condition, wherein the direct connection control instruction is used for indicating the communication controller to start a target direct-connected communication switch. The method disclosed by the embodiment of the invention is in favor of improving the data communication efficiency of the periphery device of the mobile terminal.

The invention discloses a data processing method and electronic equipment, and belongs to the technical field of communication. The data processing method comprises the following steps: acquiring parameter updating information, and acquiring a first time delay range parameter from the parameter updating information, wherein the first time delay range parameter is used for representing a time interval between two adjacent times of receiving the data packets sent by the host by the slave; enabling the host and the slave to be in communication connection based on a Bluetooth protocol; reading a second time delay range parameter currently used for communication connection with the host; determining a minimum value in the first time delay range parameter and the second time delay range parameter as a target parameter; and receiving a data packet sent by the host according to the target parameter.

The invention discloses a data processing method for distributed networks and a computer readable storage medium. The method includes the following steps: preset data conversion configuration information is received, wherein the data conversion configuration information includes one or more conversion processes, and each conversion process includes required data resources, preset data operation rules and result data resources; the conversion implementation node in each conversion process is determined; the conversion implementation nodes obtain the data of required data resources in the corresponding conversion processes; the conversion implementation nodes carry out computation on the obtained data of required data resources according to the data operation rules in the corresponding conversion processes to obtain the data of result data resources; and the data of result data resources is accessed to the conversion implementation nodes. According to the invention, the original centralized data processing process can be distributed to multiple nodes, so as to reduce the system load and improve the efficiency of data communication.

The invention relates to the field of high-speed data acquisition and discloses a method for processing production test data in the semiconductor industry. Through the data architecture, the extraction, modeling analysis and storage of various data including test cases, test process data and test result data generated by an automatic test system can be carried out in a unified way, and a data setwith certain characteristics is formed.