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85results about How to "Does not affect data transfer" patented technology
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Method, system and apparatus for dynamically adjusting link
ActiveCN102257849ADoes not affect data transferSave bandwidthSynchronisation information channelsNetwork traffic/resource managementData transmissionData traffic
The embodiments of the invention disclose a method, a system and an apparatus for dynamically adjusting links. The method comprises the following steps: when detecting a variation of a data flow, a sending end determines link adjustment information according to the data flow variation, wherein the link adjustment information includes the amount of required work links; the sending end performs work link amount adjustment for the sending end interface according to the determined link adjustment information, and transmits a configuration request to a reception end, wherein the configuration request contains the link adjustment information; after receiving the configuration request, the reception end performs work link amount adjustment for the reception end interface in accordance with the configuration request. The embodiments of the invention adjust the work link amount when detecting the variation of the data flow, and do not affect the data transmission of the original work link during the period of adjusting the work link amount, thus saving the bandwidth and power consumption.
Owner:HUAWEI TECH CO LTD
Inter-satellite ranging method based on dual-satellite time synchronization
ActiveCN103675804AHigh frequencyImprove clock accuracyRadio wave reradiation/reflectionClock rateTwo step
The invention discloses an inter-satellite ranging method based on dual-satellite time synchronization. On the basis of not depending on GPS, ranging accuracy can be raised, and present ranging requirements can be met. Firstly, a main satellite and a following satellite make an appointment for time setting. At the moment of time setting, time synchronization of dual-satellite is carried out. After time synchronization, dual-satellite clock frequency synchronization is carried out. After the two steps of synchronization are finished, the dual satellites operate under the clock after the synchronization, and the distance between the dual satellites is determined through inter-satellite timing code transmission.
Owner:NO 513 INST THE FIFTH INST OF CHINA AEROSPACE SCI & TECH
Method for aligning multichannel data based on system synchronizing and reference channel
InactiveCN102820964ADoes not affect alignmentDoes not affect data transferSynchronising arrangementComputer scienceVIT signals
The invention relates to the fields of optical fiber communication and digital communication. Particularly, the invention relates to a method for aligning multichannel data based on a system synchronizing and reference channel. The method for aligning the multichannel data based on the system synchronizing and reference channel comprises the following steps: the transmitted multichannel data are basically synchronized by arranging a ''system synchronization'' signal; then ''reference channel'' data are arranged additionally, so that a read control module for aligning channels is unrelated with the data of the working channel.
Owner:WUHAN BINHU ELECTRONICS
Router fault-tolerant method based on fault channel separation detection in NoC
ActiveCN104052622AReduce overheadImprove performanceError prevention/detection by using return channelData switching networksData transmissionThroughput
The invention provides a router fault-tolerant method based on fault channel separation detection in a NoC. A fault channel separation detection technology is used for detecting the channel fault in a router, so that fault detection does not influence normal data transmission; a Buffer with a recovery pointer is used for temporarily storing transmitted data and for retransmitting wrong data in a fault channel so as to reduce the fault-tolerant spending of the router; meanwhile, a redundancy channel is additionally arranged to be used for transmitting the data in a permanent fault channel. According to the router fault-tolerant method based on fault channel separation detection in the NoC, a low hardware cost is used, normal data transmission can be conducted during fault detection, so that network delay is lowered, and the network throughput is improved.
Owner:黄山市开发投资集团有限公司
Optical signal-to-noise ratio monitoring method and device thereof
InactiveCN104883220ADoes not affect data transferTransmission monitoring/testing/fault-measurement systemsBandpass filteringSignal-to-noise ratio (imaging)
The invention provides an optical signal-to-noise ratio monitoring method and a device thereof. The method comprises the steps of measuring the first optical power of a to-be-monitored optical signal; after bandpass filtering is performed on the to-be-monitored optical signal, measuring the second optical power of the to-be-monitored optical signal after bandpass filtering; and determining the signal-to-noise ratio of the to-be-monitored optical signal according to the first optical power, the second optical power, the filtering coefficient of bandpass filtering to the optical signal and the filtering coefficient of bandpass filtering to the noise. The optical signal-to-noise ratio monitoring method and the device realize optical signal-to-noise ratio monitoring of the received optical signal without modification of a transmitter or data transmission influence and without affecting data transmission.
Owner:NAT UNIV OF SINGAPORE SUZHOU RES INST +1
Method for performing distributed channel detection and sequential access
ActiveCN104254084AImprove predictive abilityDoes not affect data transferConnection managementTransmission monitoringSequential access memoryConstant power
The invention provides a method for performing distributed channel detection and sequential access. According to the technical scheme of the method, a new transmitter is allowed to transmit detection signals at detection intervals with any constant power, and at the same time, each activated communications link iteratively updates the transmitting power of the transmitter with a predetermined mechanism, wherein the mechanism only depends on the ratio of target SINR of the communications link to local SINR and a power adjustment value correlated to normalized outward interference; an external network determines the normalized power value of interference which is borne by the external network, and performs broadcast through an exclusive channel in an iterative process; in a channel detection process, each communication link only measures the quality of local communication links, and information interaction is not required to be performed between the communication links; and a new communication link independently deduces the maximum achievable SINR of the new communication link according to local link measurement information to determine whether to access a channel so as to be transmitted together with all activated links simultaneously.
Owner:ALCATEL LUCENT SHANGHAI BELL CO LTD
Electronic hardware with functions of encryption and data self-destruction and data self-destruction method thereof
InactiveCN101777029ADoes not affect data transferDoes not affect normal operationUnauthorized memory use protectionMemory interfaceConfidentiality
The invention discloses electronic hardware with functions of encryption and data self-destruction and a data self-destruction method thereof. The hardware comprises a flash controller and an encryption / decryption self-destruction unit which is connected with the flash controller through an ATA or SATA interface, wherein the encryption / decryption self-destruction unit comprises an encryption / decryption module, a secret key management module, a parameter read / write module, a self-destruction order detection module, a self-destruction management module, a data channel cross switch module, a nonvolatile memory interface, an ATA or SATA equipment module and an ATA or SATA host machine module. The invention can flexibly add a data encryption self-destruction module under required occasions without influencing normal operation, erase the data without a host machine, select the data erasing speed and the data erasing content, increase the reliability for erasing the data, can not destroy memory medium after erasing the data, can protect the data at all levels, increase the flexibility of data confidentiality, and control the difficulty level of decryption algorithm.
Owner:XIAN KEYWAY TECH
Object identification method based on UWB communication signals
InactiveCN103684524AImprove practicalityImprove anti-jammingSpatial transmit diversityTransmission monitoringMultiple antennaAnti jamming
The invention discloses an object identification method based on UWB communication signals. According to the object identification method based on the UWB communication signals, a wireless sensor network is formed by a plurality of communication nodes, wherein each node comprises multiple MIMO antennas to receive signals. Firstly, characteristic parameters of signals received by the multiple antennas are extracted, parameter fusion is carried out on the extracted characteristic parameters, and a classification model is obtained through a fusion parameter training classifier. The classification model enters an identification mode after training is completed, and an object is identified by using the classification model. Through the utilization of the multi-antenna technology, the accuracy of object identification is improved, the anti-jamming capability of a system is enhanced, and normal wireless node communication is not influenced.
Owner:BEIJING UNIV OF POSTS & TELECOMM
Electronic hardware with function of quick self-destruction and data erasing method thereof
InactiveCN101777100AFlexible useDoes not affect data transferDigital data protectionInternal/peripheral component protectionConfidentialityModularity
The invention relates to an electronic hardware with function of quick self-destruction and a data erasing method thereof. The hardware comprises a flash controller, a flash chip array and a self-destruction module, wherein the self-destruction module comprises a self-destruction order ministering module, a data channel cross switch module and a flash control unit; the self-destruction order ministering module is connected with the flash controller; the input of a flash controlling unit is connected with the self-destruction order ministering module, and the output of the flash controlling unit is connected with the data channel cross switch module; and the input of the data channel cross switch module is connected with an address decoding unit and a bus expanding unit, and the output of the data channel cross switch module is connected with the flash chip array. The invention has modularized data erasing function, can flexibly use, does not need a host machine when erasing the data, has fast erasing speed and reliability, can not destroy a data-erased memory medium, and increases the confidentiality degree of the data.
Owner:XIAN KEYWAY TECH
Low-power dissipation on-line collecting system and collecting method based on backup redundant data
InactiveCN103136911ALow costDoes not affect data transferTransmission systemsRedundant codeWireless data
The invention relates to a low-power dissipation on-line collecting system and a collecting method based on backup redundant data. Temperature gathering nodes on each link are sequentially connected in serial communication from (m, N) to (m, 1), the collection of temperature data can be achieved without the arrangement of an individual wireless data concentrator, and the cost of the on-line collecting system is greatly reduced. Meanwhile, each temperature gathering node receives and stores temperature data detected by redundant nodes, and when a certain transmission route goes wrong due to the that a certain temperature gathering node goes wrong or is incapable of working normally due to low power, the temperature data of the transmission route can be transmitted through the transmission routes formed by other temperature gathering nodes to achieve the function of redundant data communication. When a certain temperature gathering node or certain temperature gathering nodes go wrong or cannot transmit data, the fact that the data transmission of other temperature gathering nodes is not affected is guaranteed, and therefore a large area of communication failure caused by the invalidation of a certain temperature gathering node can be avoided, and stability is good.
Owner:BEIJING SHUOREN TIMES TECH
Movement controller IEEE 1394 communication interface system
InactiveCN101308483AConvenient communicationWide range of applicationsElectric digital data processingData transmissionIEEE 1394
The invention discloses an IEEE 1394 interface communication system of a motion controller and comprises a DSP circuit, a dual-port RAM memory circuit, an IEEE 1394 controller circuit, an IEEE 1394 communication interface socket circuit, a voltage control circuit and a reset circuit. The DSP circuit is connected with the IEEE 1394 controller circuit, the dual-port RAM memory circuit, the voltage control circuit and the reset circuit respectively through lead wires; the IEEE 1394 controller circuit is connected with the voltage control circuit, the reset circuit and the IEEE 1394 communication interface socket circuit respectively through lead wires; the dual-port RAM memory circuit is connected with the voltage control circuit voltage through lead wires; the IEEE 1394 communication interface socket circuit is connected to a host computer through an IEEE 1394 transmission cable. The invention can realize high-speed data transmission under the support of the IEEE 1394 protocol, and support plug-and-play, hot-swap, isochronous and asynchronous data transmission.
Owner:SHANGHAI JIAO TONG UNIV
Covert communication method based on IPID (Internet Protocol Identification) bit delta modulation
ActiveCN102143155AImprove securityImprove concealmentError preventionCovert communicationNetwork packet
The invention discloses a covert communication method based on IPID (Internet Protocol Identification) bit delta modulation. By using the method, sensitive information to be transmitted can be concealed in a head part of a network data packet in a computer network environment, so that the sensitive information can not be easily perceived. The method comprises the following steps: when a transmitting party transmits a network data packet, embedding covert information into low-order 4 bits of the IPID according to the corresponding modulation method, wherein high-order 8 bits of the IPID are used for implementing the incremental mode so as to enhance the covertness, and high-order 4 bits of low-order 8 bits are used for implementing synchronization and verification of data communication; and after a receiving party receives the data packet, extracting data of the low-order 8 bits, wherein the high-order 4 bits are used for verification, and the low-order 4 bits are used for the covertness of the data. The method utilizes the self incremental mode during normal communication of the IPID bits, has the advantages of favorable covertness and attack resistance, and is suitable for transmitting sensitive information with a small data size.
Owner:NANJING UNIV OF SCI & TECH
Keyboard with wireless and wired switching function
InactiveCN108170290AEasy installation and removalPracticalInput/output for user-computer interactionElectrical apparatusStructural stabilityWireless
The invention discloses a keyboard with a wireless and wired switching function. The keyboard comprises a keyboard base, a main keyboard body and an auxiliary keyboard body, wherein the main keyboardbody and the auxiliary keyboard body are movably arranged on the keyboard base, a plurality of first connectors are arranged on the keyboard base, a plurality of second connectors matched with the first connectors are arranged on the main keyboard body and the auxiliary keyboard body, and a wireless emission module is arranged on each of the main keyboard body and the auxiliary keyboard body. Through the keyboard, free switching between a wired keyboard and a wireless keyboard according to a specific demand can be realized, and the keyboard is fast and convenient to install and dismantle, highin practicability and high in structural stability.
Owner:大小(东莞)科技有限公司
Video monitoring system adopting wind/solar complementary power supply under wireless Mesh network
ActiveCN102387352AMeet the needs of expansionFlexible and convenient to expandClosed circuit television systemsTransmissionVideo monitoringWireless mesh network
The invention discloses a video monitoring system adopting wind / solar complementary power supply under a wireless Mesh network. The system has the functions of monitoring a large target area under the Mesh network and giving a fire alarm and an antitheft alarm, adopts the wind / solar complementary power supply, and is quick in deployment and convenient to mount and upgrade. Image quality and bandwidth occupation can be regulated. The system adopts software coding and decoding, and can regulate a frame number, resolution, the image quality and the like according to the needs of a user and realize the function of storing and replaying received video monitoring images by a computer or special equipment. The system supports a browser-technology-based network browsing function, and is convenient to use. A plurality of hops of routers are adopted for transmission, so normal data transmission can be ensured not to be influenced under the condition that an individual router is damaged or fails. The system and equipment have lightning protection capability, high voltage interference resistance and powerful data and alarm acquisition control and processing functions, can be normally run under the environments of high temperature, low temperature, strong wind, dust flying, torrential rain and the like, are widely applied in the fields of ports, wireless campuses and the like, and are seamlessly combined with a data monitoring system to realize the linkage of light and an alarm whistle and video recording in alarming.
Owner:DALIAN UNIV OF TECH
POE power source receiving method and POE power source receiving device
InactiveCN103490907AIncrease power supplyEnsure receiving securityEnergy efficient ICTData switching current supplyElectricityVoltage regulation
The invention provides a POE power source receiving method and a POE power source receiving device. The method comprises the steps that a power source is connected from n network ports of a POE power supply device respectively through n PD interface circuits, wherein n >=2; the working state information of the PD interface circuits is detected, and the AND operation is carried out according to the working state information to obtain an enable signal controlling electricity supplying; according to the enable signal, the working state of the multi-phase switch power source is controlled due to the fact that the multi-phase switch power source is connected with the output power sources of the PD interface circuits, wherein the multi-phase switch power source is provided with at least n power source input ends which are mutually independent, and the output voltage of the multi-phase switch power source is adjusted and output to a system device. According to the technical scheme, the power supply power of a POE device can be increased, data transmission cannot be affected, the safety of power source receiving can be effectively guaranteed, and the working stability of the system device is improved.
Owner:GUANGDONG VTRON TECH CO LTD
Disaster monitoring method for coal mine tunnel roof
ActiveCN103835755AReduce investmentReduce manufacturing costMining devicesDisaster areaDisaster monitoring
The invention relates to a disaster monitoring method for a coal mine tunnel roof. The method includes the steps that before monitoring, stability of tunnel surrounding rock is estimated, a surrounding rock risk type monitoring area is determined according to an estimation result of the stability of the surrounding rock, then a serious disaster area of the tunnel roof is determined, and monitoring instruments are only arranged in the serious disaster area of the tunnel roof and used for monitoring. According to the disaster monitoring method for the coal mine tunnel roof, only the serious disaster area of the tunnel roof is monitored, so that manpower, material resource and financial resource investment in monitoring by a coal mine enterprise is greatly saved, and production cost is reduced.
Owner:TIANDI SCI & TECH CO LTD
Serial tandem connection bus up flow control method and node equipment
The invention relates to a serial cascade ascending flow control method and relative node device, which can self-adaptive adjust the bandwidth of node when the serial cascade ascending node number changes. Wherein, each node based on the total bandwidth of serial cascade bus and the total node number of cascade connection fixes the basic bandwidth of local node, and based on the node position calculates the sum of basic bandwidths of next node and local node, to obtain the upper sending limit of local node; then the node of each cascade buffers the data of next node, to send the bandwidth not higher than upper sending limit, to send buffered data and the sent data of said node to the superior node; and each node based on the basic bandwidth fixes the data amount applied in said node, to control the data amount uploaded by each node.
Owner:HUAWEI TECH CO LTD
Method and system for detecting bandwidth, and devices
ActiveCN105634842ASolve the problem of taking up extra bandwidthDoes not affect data transferData switching networksData transmissionIp address
The embodiment of the invention provides a method and system for detecting a bandwidth, and devices and relates to the technical field of computer network. The method and system may quickly detect the bandwidth and do not influence normal data transmission in the network. The method comprises steps that a source-end device sends a first bandwidth request message to a forwarding device, wherein the IP address of the first bandwidth request message is the IP address of a destination-end device; the source-end device receives a bandwidth response message sent by the forwarding device, wherein the bandwidth response message includes the IP address and the bandwidth of the forwarding device; and the source-end device stores the bandwidth and generates a second bandwidth request message, wherein the time to live (TTL) of the second bandwidth request message is greater than that of the first bandwidth request message.
Owner:山东融智产业引导基金有限公司
Remote control device and method of electronic reading device
InactiveCN102034403AReduce fatigueDoes not affect data transferTransmission systemsAdvertisingKey pressingElectricity
Owner:HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
Communication method and device for time division duplex system
ActiveCN102685872ADoes not affect data transferEnsure normal communicationSynchronisation arrangementNetwork traffic/resource managementCommunications systemTime-division multiplexing
The embodiment of the invention provides a communication method and device for a time division duplex system for effectively guaranteeing normal communication of a base station and user equipment and relates to the technical field of communication. The communication method comprises the steps that: a first up / down link sub-frame configuration is regulated into a second up / down link sub-frame configuration; a sub-frame corresponding to the second up / down link sub-frame configuration is intersected with a sub-frame corresponding to the first up / down link sub-frame configuration; the intersection is a collection of sub-frames with the same sub-frame index and in the same sub-frame type; the intersection comprises at least one uplink sub-frame and at least one downlink sub-frame; and communication with the user equipment is carried out in at least one uplink sub-frame and at least one downlink sub-frame of the intersection based on a same timing relationship with the timing relationship corresponding to the first up / down link sub-frame configuration. The communication method and the communication device are suitable for wireless communication systems.
Owner:HUAWEI TECH CO LTD
Photoelectricity curtain wall monitoring system based on Internet of Things
InactiveCN103676887AImprove maintenance efficiencyHigh maintenance costTotal factory controlProgramme total factory controlWireless communication protocolWireless transmission
The invention discloses a photoelectricity curtain wall monitoring system based on the Internet of Things, and belongs to the technical field of the Internet of Things wireless transmission. The computer network technology, the advanced Zigbee wireless communication technology and the GPRS communication technology are adopted, and therefore real-time, accurate and intelligent monitoring management is carried out a photoelectricity curtain wall generating system. The photoelectricity curtain wall monitoring system comprises a detecting sensor, a wireless sensor node and a central controller all of which are installed inside a combiner box, the wireless sensor node is composed of a wireless transceiver and a PCB antenna, the signal output end of the detecting sensor is connected with the input end of the wireless transceiver of the wireless sensor node, and the output end of the wireless transceiver is communicated with the central controller through the PCB antenna of the wireless sensor node and the Zigbee wireless communication protocol of the Internet of Things.
Owner:SHENYANG YUANDA SCI & TECH PARK
LED lamp bead, LED display system and LED display screen
PendingCN110120198ASimple circuitEasy to replaceElectrical apparatusStatic indicating devicesLED displayEngineering
The invention is applicable to the field of LEDs, and provides an LED lamp bead, an LED display system and an LED display screen. The LED lamp bead comprises a base, and an LED driving chip, a red light LED chip, a blue light LED chip and a green light LED chip which are mounted on the base; the LED lamp bead is provided with a power input pin VDD which is connected with a power input end VDD of the LED driving chip, a grounding pin GND which is connected with the grounding end GND of the LED driving chip, a first data input pin DIN which is connected with a first data input end DIN of the LEDdriving chip, a second data input pin FDIN which is connected with a second data input end FDIN of the LED driving chip, and a first data output pin DO1 which is connected with a first data output end DO1 of the LED driving chip. The LED display system adopting the LED lamp bead is simple in circuit, does not need peripheral elements, only needs a power supply and a control panel, and is convenient to replace if the LED lamp bead or an LED driving chip is broken.
Owner:深圳市惠博升科技有限公司
VPN data transmission method and VPN data transmission device
InactiveCN108512752AImprove anti-interference abilityGuaranteed success rateNetworks interconnectionData connectionControl channel
The invention discloses a VPN data transmission method and a VPN data transmission device. The VPN data transmission method comprises the following steps of establishing a VPN tunnel between a first communication terminal and a second communication terminal; establishing a session connection through the VPN tunnel; and establishing a plurality of data connections through the session connection, and transmitting data through the plurality of data connections. According to the method and the device, the VPN control channel is established between the communication terminals, the data connectionsare established on the VPN control channel, the data connections can be used for transmitting data, and the data transmission on other data connections cannot be influenced when any one line is abnormal, as long as one data connection is normal, the data can be transmitted normally, so that the anti-interference capability of data transmission between the communication terminals is enhanced, and the success rate of data transmission is effectively guaranteed. The method and the device can be widely applied to the field of VPNs.
Owner:SHENZHEN WAYOS SCI & TECH
Poe power receiving method and poe power receiving device
InactiveCN103490907BIncrease power supplyEnsure receiving securityData switching current supplyHigh level techniquesElectricityVoltage regulation
The present invention provides a PoE power supply receiving method and a PoE power supply receiving device, wherein the method includes the step of accessing a power source from the N network ports of the PoE power supply device using N PD interface circuitry, wherein N ≥ 2; detects each PD interface.The working status information of the circuit is performed according to the working state information to obtain an enable signal to control power-on, and the output power source of each PD interface circuit is accessed by the multi-phase switching power source, and the multi-phase switch is controlled according to the enable signal.The power supply status of the power supply; wherein the multi-phase switching power source has at least n mutually independent power input; outputting the output voltage of the multi-phase switching power supply to the system device.The technical solution of the present invention can increase the power supply power of the PoE device without affecting data transmission, and it is possible to effectively support the power supply reception security, and improve the operation stability of the system equipment.
Owner:GUANGDONG VTRON TECH CO LTD
Method for realizing locomotive marshalling by using WTB-Ethernet gateway
PendingCN111757297AQuick responseTimely responseParticular environment based servicesRailway componentsEmbedded systemReliability engineering
The invention provides a method for realizing locomotive marshalling by using a WTB-Ethernet gateway, so as to adapt to the specific application requirements of domestic locomotives, meet the nationalstandard IEC-61375, and realize marshalling among locomotives with different models and different power systems. Three tasks are maintained in a UC / OS system and comprise a main task and two auxiliary tasks. In the process of detecting the equipment, the main task and the auxiliary tasks are both in a running state or a waiting state, task switching is carried out at any time to complete marshalling of newly added equipment, meanwhile, the auxiliary tasks continuously send a detection frame to determine whether a new node is added or not, and the method can monitor the addition of the equipment in real time within a ms-level time range.
Owner:XIAN XIANGXUN TECH
Transmitting system, multiplexer and method for reducing power unevenness in sending machine band
InactiveCN101252363AImprove in-band power unevennessDamage reductionTransmission control/equalisingHigh level techniquesSource dataTransmission system
The invention provides a method used for reducing the roughness of the in-band power of the transmitter, a multiplexer and a transmission system. The information source data are encapsulated into a multiplex frame which is composed of three fields, including a multiplex frame head, a multiplex frame payload and a filling field. The method includes the procedures as follows: the filling field is filled with a random data sequence or a fixed data sequence with balance energy to ensure the data in the multiplex frame to realize balance energy after the modulation. Based on the method provided by the invention, the multiplexer and the transmission system, when the information source data are encapsulated into a multiplex frame, the filling field of the multiplex frame is filled with the random data sequence or the fixed data sequence with balance energy to reduce the fixed data sequence with unbalance energy in the information source data before the modulation of the transmission system and ensure the data in the multiplex frame to realize balance energy after the modulation; thereby, the roughness of the in-band power is improved; the damage for the transmitter is reduced and the requirement of stable operation of the system is well fulfilled.
Owner:新奇点智能科技集团有限公司
Improved distributed channel detection and sequential access method
ActiveCN104955093AImprove predictive abilityDoes not affect data transferPower managementSequential access memoryTelecommunications link
The invention provides an improved distributed channel detection and sequential access method. According to the scheme, an external network is enabled to only perform limited times of operation of confirming the normalized total interference power value borne by the external network, and broadcasting is performed via an exclusive channel apart from the iteration process. In the channel detection process, each communication link only measures transmission quality of the local communication link without interaction information between all the communication links. Meanwhile, a new communication link autonomously infers the maximum achievable signal to interference plus noise ratio according to local link measurement information so that the new communication link determines accessing for performing transmission on the same channel with all other activated links at the same time.
Owner:ALCATEL LUCENT SHANGHAI BELL CO LTD
DMA-based method for automatically defining ending of variable-length frame in communication among SPI devices
InactiveCN110865954AFlexible deliveryAvoid error accumulationElectric digital data processingMessage frameVariable length
The invention discloses a DMA-based method for automatically defining ending of a variable-length frame in communication among SPI devices. A branch signal is led out from a chip selection output signal in the master device and is connected to a chip selection level value change monitoring interface in the slave device. When one frame of message of the master device is sent completely, both the level value of a chip selection output signal in the master device and the level value of a branch signal of the chip selection output signal are changed. And the slave device detects the change of thelevel value through the chip selection level value change monitoring interface to judge the end of the primary communication, defines that the sending of a frame of message of the master device is ended, and then performs subsequent message receiving processing and DMA attribute configuration of the slave device for the next communication. In the SPI communication adopting the DMA mode, the SPI master device can flexibly send the message frame with the variable length, and the slave device can accurately and automatically define the frame tail of one frame of variable-length frame message of the master device.
Owner:NANJING SCIYON AUTOMATION GRP
Optical property monitoring device based on mode coupling
PendingCN109687907AMonitor OSNRMonitor DispersionElectromagnetic transmissionFiberPhotovoltaic detectors
The invention discloses an optical property monitoring device based on mode coupling, which comprises a coreless optical fiber, a multi-core optical fiber, fan-out equipment and a plurality of photoelectric detectors. The input end of the coreless optical fiber is connected with an optical input signal; the output end of the coreless optical fiber is connected with the input end of the multi-coreoptical fiber; the output end of the multi-core optical fiber is connected with the fan-out equipment; the output end of the fan-out equipment is connected with the plurality of photoelectric detectors; the number of the photoelectric detectors is kept consistent with the number of fiber cores of the multi-core optical fibers. From the above, the optical property monitoring device based on mode coupling, which is disclosed by the invention, implements monitoring on optical properties of the received optical signal, which include an optical signal-to-noise ratio, dispersion, polarization modedispersion and the like, in cases of not modifying a sender and not influencing data transmission.
Owner:NAT UNIV OF SINGAPORE SUZHOU RES INST +1
Synchronous serial bus multiplexing method and device, terminal, and non-temporary computer readable storage medium
ActiveCN110990319ADoes not affect data transferSave pin resourcesElectric digital data processingComputer hardwareMultiplexing
The invention relates to the field of embedded chips, and provides a synchronous serial bus multiplexing method and device, a terminal and a non-temporary computer readable storage medium. The invention aims to reduce the number of consumed pins when a main chip is connected with VGA and IC interfaces. The method comprises the following steps that an input / output pin driven by a multiplex drivingmodule is applied for as a pin, corresponding to a synchronous serial bus, of a main chip; the multiplexing driving module judges a driving module corresponding to a current application; if the driving module corresponding to the current application is a driving module of hardware equipment corresponding to a first interface, the input / output pin driven by the multiplexing driving module is applied to the first interface; and if the driving module corresponding to the current application is a driving module of hardware equipment corresponding to a second interface, the input / output pin drivenby the multiplexing driving module is applied to the second interface. According to the invention, pin resources of the main chip are saved, convenience is provided for adding other more functions tothe main chip, and multiplexing of the synchronous serial bus is realized on a software level.
Owner:BEIJING THUNDERSTONE TECH CO LTD
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