51results about How to "Achieve lossless transmission" patented technology

A method and related user device for executing handover between a multimedia broadcast multicast single frequency network (MBSFN) and non-MBSFN regions of a communication network are disclosed. The communication network includes a first community forming the MBSFN region, a second community not forming the MBSFN region and a keeping community between the first and second communities. The keeping community belongs to the MBSFN region, wherein the broadcast keeping community in the keeping community indicates information. The method includes steps as follows: receiving the indicating information of the keeping community so as to learn that the user device in the keeping community; measuring a first signal intensity transmitted based on MBSFN and aiming to a pre-determined business in the keeping community and a second signal intensity transmitted based on a single community; and selecting the first community or the second community as the target community when the difference between the first and second signal intensities is less than a pre-determined threshold value. This invention is capable of providing continuous MBMS service for user under the condition that the user device moves in different communication regions.

The embodiment of the invention discloses a switching method, a communication system and associated equipment, which are used for realizing lossless switching of data when a service gateway (SGW) changes. The method comprises: sending an end marking package to a target side access element location when an access network changes and a source side SGW changes so as to facilitate the target side access element location of distributing down data from a target side core network according to the indication of the end marking package. The embodiment of the invention also provides the communication system, a service gateway and a packet data network gateway.

The invention discloses a real-time interactive remote medicine system. The real-time interactive remote medicine system comprises an inquiring end, at least one expert end, a data capture repeater component, a network security transmission component, a data transit server component, a real-time behavior control component and a remote medicine control server. In addition, the invention further discloses a real-time interactive remote medicine method based on the real-time interactive remote medicine system. By the real-time interactive remote medicine system and the real-time interactive remote medicine method, real-time medicine synchronization of two-way audio and video communication on both sides can be realized, relevant data information can be subjected to remote checking and real-time transmission, and the interactive audio and video communication can be realized on the basis of sharing of real-time data information; for some local key data information, a nondestructive checking mode can be specified through the expert end, so that the key data information is ensured not to be lost in Internet applications, accuracy of a remote medicine mode is guaranteed, and possibility of medicine errors is avoided.

An intelligent device for switching Camera Link to a serial digital interface (SDI) relates to the technical field of image processing and solves the problems that the existing various cameras based on a Camera Link interface can not display on a monitor directly and quality of displayed images is poor. The device comprises a field programmable gate array (FPGA), a digital signal processor (DSP), a synchronous dynamic random access memory (SDRAM) and an SDI module. The Camera Link interface receives image data output by a camera and transmits the image data to the FPGA, the FPGA conducts noise-reducing processing on the received image data and transmits the image data to the DSP, and the DSP receives the image data through a video port (VP), transmits the image data to the SDRAM to be stored in an EDMA mode, reads the image data in the SDRAM in an external memory interface (EMIF) bus mode and processes the data, and transmits the processed image data to the SDI module. Use and carrying of the device are convenient.

The present invention discloses a user face data inverse-transmitting method for realizing the switching across a base station, which comprises the following steps: data is received by a user face; message protocol dada units PDUs are stored at a high layer, and a lower layer is noticed to process massage protocol; after the massages are successfully transmitted, the PDUs of corresponding massages are deleted by the high layer according to the touching of the lower layer; when is switched, the high layer of a source side base station sends the PDUs of stored massages which need to be transmitted inversely to an target base station. Thus, when data needs to be transmitted inversely, by the linkage of the high layer and the lower layer, the data is directly sent out by the high layer to the target base station, so a data processing path is greatly shortened, and further, the processing time delay in the switching across a base station is extendedly reduced. On the premise that the existing protocol is followed, switched data is moved to the GTPU layer of TNL by inverse-transmitting operation. Thus, not only the lossless transmission of the switched data is realized, but also the inverse-transmitting time delay of the data can be effectively reduced, the repeated data processing and interlayer data copying are largely reduced, and the inverse-transmitting time delay of the user face data is effectively shortened.

The invention discloses a data processing method, a switching method, a device and a system based on cross HSGW switching, wherein, the data processing method based on cross HSGW switching comprises the following steps that: a source access gateway receives a first signaling from a source access network, wherein, the first signaling carries instruction information used for instructing a source access gateway to buffer downlink data packets; the source access gateway obtains the instruction information from the first signaling; the source access gateway receives the downlink data packets; and the source access gateway buffers the downlink data packets according to the instruction information. The data processing method, the switching method, the device and the system based on cross HSGW switching realize lossless transmission of data packets.

The invention discloses a transmitting and receiving method through a plurality of implementation manners, and a transmitting and receiving device which can realize service data reconstruction under the conditions of error codes and invalid channels, as well as a protection method under the condition of invalid channel and a channel protection system with the corresponding transmitting / receiving device. The channel protection method comprises the steps of conducting in-band redundancy encoding for each service channel used for delivering service information; taking one or more out-band channels as standby channels; conducting error correction for the service channel through the in-band redundancy coding when the service channel generates a random / rectifiable error code; and conducting error correction for the service channel through standby channels when the service channel generates non-rectifiable errors or when the channel is invalid. The implementation manners of the invention overcomes the technical problems in the prior art that service goes through intermittent disconnection and a small error code and a big error code can not be protected effectively and simultaneously, thereby improving the reliability of communication network / devices and realizing flexible protection of both a small system and a big system.

The invention discloses a low-voltage differential signaling (LVDS) receiver, a transmitter and a method for receiving and transmitting LVDS. The LVDS receiver comprises a data shift register, a synchronous detecting and synchronous processing device, a data length decoder and a data transmission counter, wherein the data shift register is used for receiving and shifting image data transmitted by an LVDS bus; the synchronous detecting and synchronous processing device is used for synchronously detecting the received data of each frame, and performing synchronous processing after detecting image data start synchronous codes or image data end synchronous codes; synchronous detection is not performed during the decoding of data length information; the data length decoder is used for decoding the data length information after finishing the transmission of the image data start synchronous codes to acquire the length of the image data in corresponding frames, and outputting corresponding data length count values; the data transmission counter is used for receiving the data length count values, enabling counting, and outputting indication signals during counting to indicate the synchronous detecting and synchronous processing device not to perform synchronous detection, and stops outputting the indication signals after the counting is finished. By adopting the LVDS receiver, the transmitter and the method for receiving and transmitting the LVDS, the lossless transmission of the data image through the LVDS bus can be realized.

The invention relates to a data acquisition system with combined use of a nine-shaft sensor and a Bluetooth module. The system comprises a nine-shaft sensor module, microprocessor modules, a Bluetooth module as well as an FPC flat cable and a computer which are connected with the modules, wherein the microprocessor module and the Bluetooth module are integrated on a same circuit board so as to be used for jointly executing the operations of data acquisition, preprocessing, transmission and the like; the nine-shaft sensor module is independently integrated and is connected with the corresponding microprocessor module by the FPC flat cable, so that data acquired by the nine-shaft sensor can be transmitted to the microprocessor module to be correspondingly processed; the Bluetooth transmission module can be used for achieving data exchange between the microprocessor and the computer.

The invention discloses a single-fiber device and relates to the technical field of optical communication, thereby achieving higher light-emitting power and acceptance sensitivity. The single-fiber device comprises a first photodiode for receiving incident light and a laser diode for emitting emergent light and further comprises a uniform-wavelength optical splitter in a positive direction; the uniform-wavelength optical splitter comprises a first birefringent plate, a half-wave plate, a 45-DEG Faraday rotating plate and a second birefringent plate, which are arranged sequentially along the positive direction and are vertical to the positive direction; the second birefringent plate is the same with the first birefringent plate; an included angle Alpha between the optical axis of the first birefringent plate and the positive direction ranges from 0 zero to 90 DEG; an angle Beta between the e axis of the semi-wave plate and the main cross section of the first birefringent plate is equal to 67.5 DEG or 22.5 DEG; the incident light passes through the uniform-wavelength optical splitter along the positive direction; the emergent light passes through the uniform-wavelength optical splitter along the opposite direction of the positive direction; and the emergent light is linearly polarized light, of which the polarizing direction is vertical to the main cross section of the first birefringent plate.

The invention relates to a four-band remote video monitoring system and a data transmission method thereof. The video monitoring system comprises a visible-light lens, a near-infrared lens, a 3CCD (3 charge coupled device) image detector, a near-infrared image detector, an image collecting and processing device and a remote computer. According to the four-band remote video monitoring system and the data transmission method applicable to frequency conversion transmission of a narrow-bandwidth large data stream of the system, under the condition that a network transmission bandwidth is smaller than an image data bandwidth, the smooth transmission of dynamic video data and the lossless transmission of high-definition image data are achieved flexibly; and multi-band motion state estimation and static state spectral characteristic analysis of a dynamic target are facilitated.

The invention provides an all-optical buffer based on stimulated Brillouin gain polarization characteristics. In the all-optical buffer, a first optical fiber coupler, a first optical isolator, a first optical fiber, a first optical circulator, an optical attenuator, a second optical isolator, a second optical fiber, a second optical circulator, a polarization state port of an optical polarization beam splitter, an optical amplifier and an optical filter are in closed connection to form an optical circular cavity; a pump light source is connected to two polarization controllers through a second optical fiber coupler; the two polarization controllers are respectively connected to the two optical circulators; signal light is transmitted from the first optical fiber coupler to the second optical circulator; when the pump light source is closed, the signal light is output from the polarization state port; when the pump light source is opened, pump light respectively enters the two optical fibers so as to cause the polarization state of the signal light to deflect for 90 degrees; and the signal light is output from another polarization state port. According to the all-optical buffer provided in the invention, the buffer delay of multi-way signals on the same buffer path can be independently controlled.

The invention provides a touch panel and a display device. The touch panel comprises a transparent substrate, at least one light ray emitting unit, a sealing layer and at least one light ray receiving unit. The transparent substrate comprises a first surface and a second surface opposite to the first surface, the first surface and the second surface are used for conducting touching, and the substrate comprises a touch area located in the middle of the substrate and a non-touch area on the periphery of the substrate. The light ray emitting unit is arranged on the non-control area of the second surface and used for emitting light rays including infrared light towards the interior of the substrate. The sealing layer is arranged between the light ray emitting unit and the substrate and used for sealing a light ray outlet face of the light ray emitting unit, the part, away from the light ray outlet face of the light ray emitting unit, of the sealing layer is a plane, and thus light rays are totally reflected in the substrate. The light ray receiving unit is arranged on the non-touch area of the second surface and used for receiving the light rays which are emitted by the light ray emitting unit and pass through the substrate. The connecting line of the light ray emitting unit and the light ray receiving unit transversely penetrates through the touch area.

The present invention provides a portable DVR, including a camera, a CPU controller, SD card memory. The camera is connected to the CPU controller by a parellel style, the CPU controller gets a frame picture from the video acquired by the camera, processing by the Retinex method, and recording the processed video to the SD card memory. The invention can acquire vivid human face image information in the monitor information.

The invention discloses a data transmission method and device, a storage medium and a base station, and the method comprises the steps: obtaining a second mapping relation between a data flow before switching and a data radio bearer when a switching request is received; after a switching completion signaling sent by the user equipment is received, receiving a status report of an unsuccessfully transmitted data packet sent by the user equipment; and determining a receiving state of the unsuccessfully transmitted data packet according to a first mapping relationship between the switched data stream and a data radio bearer, the second mapping relationship and the state report. According to the technical scheme, lossless transmission of data during switching can be realized.

The invention discloses an audio matrix host computer, a public broadcasting system, and working methods thereof. The audio matrix host computer comprises a CPU and a digital audio media matrix, a microphone controller, a fire alarm, a fire linkage device, a trigger controller and an external sound source which are respectively connected with the CPU; the CPU receives audio signals from the microphone controller, the fire alarm, the external sound source and the trigger controller, and then obtains the whereabouts of various audio signals, that is audio zones where various audio signals are distributed to; and for each audio zone, the priority of various audio signals distributed to the same audio zone is compared, and then the digital audio media matrix is controlled to output the audio signal with the highest priority distributed to the same audio zone to the corresponding audio zone. The public broadcasting system comprises a plurality of audio matrix host computers, and the CPUs of various audio matrix host computers are in cascade connection. The audio matrix host computer provided by the invention has the advantages of being simple in structure, and does not need complicated connection, so that the installation space and the use cost are saved.

The embodiment of the invention provides a method and equipment for data transmission in a relay network. The method comprises the following steps: caching a data packet of which the transmission condition is not confirmed through a BAP layer in an IAB node; and if a superior node accessed by the IAB node is changed, transmitting the data packet of which the transmission condition is not confirmedto a new superior node. In the embodiment of the invention, the BAP layer in the IAB node caches the data packet of which the transmission condition is not confirmed, and after the superior node accessed by the IAB node is changed, the data packet cached by the BAP layer can be submitted to a lower layer again and transmitted to the new superior node, so that data lossless transmission during network topology architecture change in the multi-hop network can be realized.

The invention discloses a data compression transmission method based on an IEEE754 format. The method comprises the following steps of: grouping acquired data, assembling the data into a decimal number not more than 15 bits according to a certain rule, converting the decimal number into 8-byte data according to an IEEE754 double-precision floating point type format, adding a data head, a data tailand a checksum to the 8-byte data, and sending the 8-byte data; after receiving the data, checking, by the receiving end, whether the data is complete or not and whether the data is correct or not; and if the data is complete and correct, firstly filtering the data head, the data tail and the checksum, then splitting the data, then converting the data into decimal integers according to an IEEE754double-precision floating point type format, separating the obtained decimal integers according to an assembly format before compression, and then processing precision and symbols to obtain data before compression. According to the method, the transmission efficiency can be remarkably improved when data with small numerical values and low precision are transmitted, and wrong data and incomplete data can be autonomously cleared.

The invention discloses a turbomachinery CAE integration platform based on unified management of knowledge base data, system analysis module, one-dimensional centerline module, geometry module, two-dimensional through-flow module, three-dimensional CFD analysis module, FEA finite element analysis module, knowledge Library module, one-dimensional centerline module is connected with system analysis module, geometry module is connected with one-dimensional centerline module; two-dimensional flow-through module is connected with geometry module, three-dimensional CFD analysis module is connected with geometry module; FEA finite element analysis module is connected with three-dimensional CFD analysis The modules are connected, and the knowledge base module is used to accumulate, store, analyze, display, and manage design data for the system analysis module, one-dimensional centerline module, geometry module, two-dimensional flow-through module, three-dimensional CFD analysis module, and FEA finite element analysis module and reuse. The invention has the advantages of high degree of specialization, good comprehensive performance, reliability and the like.

The invention discloses an aircraft-based image processing method, device, equipment and a storage medium. The method comprises the steps of if an image processing instruction is received, obtaining initial image data and encoding the initial image data to obtain first image data by the aircraft; performing data conversion on the first image data to obtain second image data; modulating the second image data to obtain third image data; and transmitting the third image data to a preset receiver connected with the aircraft, so that the preset receiver receives the third image data, and demodulates, converts and decodes the third image data to obtain target image data. According to the invention, the aircraft performs coding, data conversion and modulation on the initial image data and then transmits the initial image data to the preset receiver, so that quick transmission of the high-definition image data is realized, intersymbol interference caused by ground multipath transmission is overcome, lossless transmission of the high-definition image data is realized, and the transmission efficiency of the high-definition image data is improved. The image processing efficiency when the aircraft monitors the specific target is improved.

The invention discloses an individual soldier wearable portable ultrasonic system and a control method, and the individual soldier wearable portable ultrasonic system comprises a wearable voice input module which inputs a voice control instruction to a wearable main control module; the wearable master control module is used for analyzing the received voice control instruction and sending a control instruction to the wireless ultrasonic probe module according to an analysis result or sending the control instruction to the remote control automatic injector module according to the analysis result; the remote control automatic injector module is used for executing automatic dosing and sampling operation according to the control instruction; the wireless ultrasonic probe module is used for controlling an instruction to obtain a radio frequency signal and sending the obtained radio frequency signal to the wearable main control module; the wearable master control module receives and processes the radio frequency signal sent by the wireless ultrasonic probe module to obtain image information, and sends the obtained image information to the head-mounted display module; and the head-mounted display module is used for displaying the image information sent by the wearable main control module.

This invention relates to a method and a system for transmitting TDM service realized based on bit G passive optical network including buffer-storing up-TDM service data in a first buffer-storage when the GPON system is ranging and carrying the TDM service data in the first storage to a second buffer-storage after the ranging is finished to read out the TDM data in the second storage, which can solve the problem of interruption of the up-TDM service resulted in temporary interruption of transmission between the up-directin optical circuit terminal and the optical signal T-R unit due to the ranging to realize lossless transmission when TDM service ranges on the up direction of the GPON system.

The invention provides an all-optical buffer based on the polarization characteristic of stimulated Brillouin gain. In the all-optical buffer, the first optical fiber coupler, the first optical isolator, the first optical fiber, the first optical circulator, the optical attenuator, the second optical isolator, the second optical fiber, the second optical circulator, A polarization state port of the optical polarization beam splitter, an optical amplifier and an optical filter are closed and connected to form an optical ring cavity. The pump light source is connected to two polarization controllers through a second fiber coupler, and the two polarization controllers are connected to two optical ring lines respectively. The signal light is transmitted from the first optical fiber coupler to the second optical circulator. When the pump light source is turned off, the signal light is output from one polarization state port; when the pump light source is turned on, the pump light enters the two optical fibers respectively for use The polarization state of the signal light is deflected by 90 degrees, and the signal light is output from another polarization state port. The invention can realize the independent control of buffer delay of multi-channel signals in the same buffer path.

The invention provides a roller bearing loading device and a loading device, and relates to the technical field of bearing manufacturing. The roller bearing loading device comprises a conveying moduleand an arrangement module; the conveying module is connected with the arrangement module, and is used for conveying roller bearings to the arrangement module; the arrangement module is used for arranging the roller bearings; a partition part is arranged on the conveying module; one end of the partition part is connected with the arrangement module; the partition part comprises multiple cell structures; and the multiple cell structures are arranged in a length direction of the partition part in sequence, and are used for placing the roller bearings, so that such technical problems as lower userate of a roller bearing loading device used in the prior art and material damage are relieved.

The invention provides a method and device for transmitting a high-definition video, and the method comprises the steps: carrying out the separation of brightness and chromaticity components of a source image; carrying out the grouping of the brightness and chromaticity components of each row or column of the source image according to the bit level; packaging corresponding groups (4 bits more) according to the values of bits in all groups; packaging the corresponding groups (4 bits lower) according to the distribution condition of numerical values corresponding to bits in the groups; enabling an Ethernet package corresponding to the source image to be placed in a data field of an Ethernet frame in a preset transmission sequence, and enabling the Ethernet frame to be transmitted to the receiving end. According to the embodiment of the invention, the method can improve the transmission efficiency of data, can achieve the lossless transmission of 1080p@60YUV422(16bits) videos.

The invention discloses a wireless network transmitter-receiver set which comprises a protective casing for protecting the internal structure. An antenna plate, a plane sheet reflector, a wireless network adapter module and a cable are packaged inside the protective casing; the antenna plate and the wireless network adapter module are both arranged on the plane sheet reflector; the wireless network adapter module is in radio frequency electric connection with the antenna plate. By means of the wireless network transmitter-receiver set, the network access performance with the transmission distance as long as two kilometers and the downlink rate not smaller than 20 Mbps can be provided; in the using process, only standard outdoor type AP devices are needed, transformation is not needed, and cost of the wireless network transmitter-receiver set is only 1 / 3-1 / 2 of the cost of CPE access devices; EIRP indexes of the wireless network adapter module are improved, the receiving sensitivity of the wireless network adapter module is improved, and the functions such as water proofing, dust proofing and ultraviolet proofing are achieved so that the wireless network transmitter-receiver set is suitable for serving as an wireless network access device in countries, outer suburbs and remote regions.

The invention discloses a data compression transmission method based on IEEE754 format. This method is to group the collected data first, and then assemble them into a decimal number of no more than 15 digits according to certain rules, and then convert it into 8-byte data according to IEEE754 double-precision floating-point format, and add data header and data tail to it. and the checksum; after receiving the data, the receiver first checks whether the data is complete and verifies whether it is correct. If the data is complete and correct, first filter the data header, data tail and checksum and then split the data , and then converted into decimal integers according to the IEEE754 double-precision floating-point format, and the resulting decimal integers are separated according to the assembly format before compression, and then the precision and sign are processed to obtain the data before compression. The method of the invention can remarkably improve the transmission efficiency when transmitting data with small value and low precision, and can autonomously clear wrong data and incomplete data.

The invention relates to the field of an optical communication technology and provides a broadband radio frequency modulation circuit of a laser. The circuit comprises a peaking inductor, a depletion type FET (field effect transistor) geminate transistor, a broadband impedance matching circuit, a broadband Bias-T circuit, an impedance transmission line and a matching resistor. In the technical scheme, as the broadband impedance matching circuit is used, the impedance matching can be flexibly reduced, thus realizing non-loss transmission of a radio frequency signal, achieving the high-efficiency modulation of the laser within a frequency range from 0.45GHz to 10GHz, and well meeting the requirement of an RoF (radio-over-fiber) system on transparent transmission of radio frequency bands of GSM (Global System For Mobile Communication), WCDMA (Wideband Code Division Multiple Access), 802.11a / b / g, WiMax, LTE and the like in the next-generation wireless communication system.

The present invention provides a high-definition video transmission method and device. The method includes: separating the luminance and chrominance components of the source image; Carry out grouping; for the grouping corresponding to the upper 4 bits, group the group according to the value of the bit value in each group; for the grouping corresponding to the lower 4 bits, respectively according to the distribution of the value corresponding to the bit in the grouping grouping according to the situation; filling the Ethernet packet corresponding to the source image into the data field of the Ethernet frame in a pre-negotiated sending order, and sending the Ethernet frame to the receiving end. The application of the embodiments of the present invention can improve the data transmission efficiency, and further realize the lossless transmission of high-definition video of 1080p@60 YUV422 (16bits) video.