632results about "Electrical cable transmission adaptation" patented technology

A communication device includes a case, a cover, a signal processing module and a signal switching module. The cover whereon the signal processing module is disposed is detachably assembled with the case. The signal switching module is disposed on the case and includes a connection component and a conductive component. The connection element includes a switching element, a chamber, a device port and a module port. The device port is connected to external devices. The switching element is movably disposed inside the chamber. The conductive component is located inside the case, and is spaced from the device port by the switching element when a signal transmission terminal of the signal processing module is inserted into the module port, and further contacts against the device port when the signal transmission terminal is removed from the module port, so as to maintain signal transmission between external devices.

The present invention relates to an image display device. An image display device according to one embodiment of the present invention comprises a display, and a signal processing device that outputs data to the display, wherein a first interface in the signal processing device comprises a first terminal and a second terminal for bidirectional communication, and at least one of the first terminal and the second terminal shares an interface monitor signal and a system control bus signal. Accordingly, it is possible to perform integrated support of control data and the like, and thus cable wiring can be simplified.

An embodiment of a mind-view communication apparatus includes a first portable unit and a second portable unit. The first portable unit includes an eyeglass frame, at least one first optical unit disposed on the eyeglass frame for capturing at least one scene image corresponding to a field of view of a user, and at least one second optical unit disposed on the eyeglass frame for capturing at least one eye image corresponding to at least a portion of at least one eye of the user. The second portable unit is in communication with the first portable unit and includes at least one processor configured for receiving the at least one scene image and the at least one eye image, determining a direction within the field of view to which the at least one eye is directed based upon the at least one eye image, and generating a subset of the at least one scene image based on the determined direction.

The invention relates to the field of data transmission, in particular to a multimode optical fiber image transmission method, system and device and a medium. The method comprises the steps of acquiring an original image of a target area through image acquisition equipment of the power transmission line operation robot; converting the original image into an optical signal and transmitting the optical signal through a multimode optical fiber to generate a speckle image with spatial disturbance characteristics; inputting the speckle image into a neural network model constructed based on a sliding window self-attention mechanism for image reconstruction; the reconstructed image is output to a power transmission line state analysis system for real-time monitoring; the sliding window self-attention block calculates local self-attention features in windows with fixed sizes through window multi-head self-attention and sliding window multi-head self-attention mechanisms which are alternately arranged, and feature interaction between adjacent windows is achieved through a sliding window mechanism. According to the method, the anti-interference capability and the dynamic environment adaptability are improved, the calculation complexity is reduced, and the model generalization capability is improved.

The invention relates to a method for determining the position of at least one object (P1-P6) in a space (2), in particular of at least one product positioned on a shelf (7), wherein the method includes: emitting a light signal, encoded with identification information for identifying the object, from a light-emitting device (6) positioned adjacent to the object, and capturing a scene with the aid f at least one freely movable camera (10), wherein a digital scene image generated with the aid of the camera represents the scene, and generating object position data on the basis of a computer-determined position of the light signal appearing in the digital scene image in relation to the camera and the identification information emitted with the light signal, and on the basis of an automatically determined orientation and position of the camera in the space when the scene is captured, wherein the object position data represents the position of the object in the scene with respect to the space.

The invention provides an external equipment security sharing system between internal and external network equipment. The external equipment security sharing system comprises a control signal processor used for securely transmitting a control instruction of external HID equipment between the equipment; the control signal processor is respectively connected with an external computer host connected to an external network and an internal computer host connected to an internal network and isolated from the external network, and a control instruction of external HID equipment received by the external computer host is safely transmitted to the internal computer host through the control signal processor; and hardware isolation, protocol conversion, data encryption and watermark addition are adopted, so that the data security of an internal computer host is ensured. The data security of the internal computer host can be effectively ensured while the internal computer host and the external computer host share the external equipment.

The invention relates to a video acquisition and transmission method and device for converting a 10-gigabit network into a PCIe (Peripheral Component Interconnect Express) interface. The method comprises the following steps: receiving a video stream through a double 10-gigabit network optical module, carrying out protocol analysis and preprocessing through an FPGA (Field Programmable Gate Array), realizing multi-path alternate reading and writing by utilizing DDR3 ping-pong cache, dynamically distributing the video stream to multiple devices through a three-path PCIe 3.0 * 4 interface and an XDMA (Extensible Direct Memory Access), and optimizing the transmission priority in combination with a load state. The device comprises two paths of SFP + optical modules, a Xilinx Virtex7 series FPGA chip (integrated with a 10-gigabit network MAC, a PCIe XDMA IP core and a DDR3 controller), three paths of PCIe 3.0 * 4 interfaces and an external DDR3 memory. The system has the advantages that the double 10-gigabit network input and multi-PCIe channel collaborative architecture breaks through the single-channel bandwidth bottleneck; the intelligent ping-pong cache and the AXI arbitration strategy reduce the data conflict risk; and dynamic bandwidth allocation optimizes real-time performance.

The invention relates to the technical field of optical communication, in particular to an automobile headlamp communication system and method based on image frame interpolation, comprising a transmitting end and a receiving end, a vehicle-mounted central control system of the transmitting end is used for receiving input to-be-transmitted information, and an ambient light detection module evaluates an external illumination condition in response to the input of the to-be-transmitted information; an image gray value and frame insertion frequency are set based on the illumination intensity, the image coding module codes information to be transmitted based on the set image gray value to generate a projection image frame, and the projection module inserts the projection image frame into a normal illumination frame sequence of a vehicle lamp based on the frame insertion frequency and projects the projection image frame to an external environment; the image acquisition module of the receiving end is used for acquiring a projection image frame, the image decoding module preprocesses the projection image frame and then decodes the projection image frame, and the information to be transmitted is restored and sent to the vehicle-mounted central control system. According to the invention, vehicle lamp communication at a certain distance in a traffic environment can be realized on the premise of ensuring normal vehicle lamp illumination.

The invention relates to an underwater visible light signal recovery method based on transfer learning, and aims to solve the problems of signal noise, distortion and communication performance reduction caused by disturbance of water turbidity, flow velocity, ambient light intensity and the like on an underwater visible light communication (UVLC) system. In combination with transfer learning and a generative adversarial network (GAN), data are acquired through a self-developed hardware platform, background data are generated through MATLAB simulation, simulation and real image features are fused by using a conditional generative adversarial network (cGAN) to generate simulation data, signal recovery capability is trained by using a U-NetGAN model, and finally the system is deployed at a receiving end. Compared with the prior art, the scheme overcomes the problems that traditional modulation is poor in adaptability under disturbance of water turbidity, flow velocity and the like and is difficult to deal with a complex underwater environment; the defects that a deep learning method depends on large-scale data and cross-scene generalization is weak are overcome. Through the combination of transfer learning and GAN, the UVLC system communication performance is significantly optimized, the delay is low, the complexity is low, and actual deployment requirements are better met.

The present application belongs to the field of high-speed signal transmission technology, and specifically discloses a high-speed differential signal impedance matching circuit and an impedance matching method thereof. The circuit includes: a main resistance calibration module, a calibration signal circuit and a calibration circuit; the calibration signal circuit includes a secondary resistance calibration module; the first output end of the calibration circuit is respectively connected to the main resistance calibration module and the secondary resistance calibration module; the calibration signal circuit is connected to the calibration circuit; the calibration signal circuit is used to input a reference voltage and an adjustment voltage to the calibration circuit; the calibration circuit is used to adjust the first equivalent resistance value based on the reference voltage and the adjustment voltage until the target calibration control signal is output, so that the first equivalent resistance value reaches the resistance value of the reference resistance, and the second equivalent resistance value of the main resistance calibration module matches the characteristic impedance of the differential signal transmission circuit. Through the present application, the effect of automatic calibration of impedance matching can be achieved, the efficiency of impedance matching can be improved, and the impedance calibration accuracy is high.

The invention discloses a system and a method for encrypting high-speed audio and video data based on an FPGA (Field Programmable Gate Array). The system mainly comprises an optical module interface, an FPGA module, a DDR4 (Double Data Rate 4), a FLASH and an HDMI (High Definition Multimedia Interface) TX interface. Wherein the FPGA module internally comprises a self-designed custom protocol processing module, a cache control module, a key management module and a data encryption module; the optical module interface is used for receiving audio and video data in a user-defined format; the user-defined protocol processing module analyzes effective audio and video data according to a user-defined message format, and the data is cached in a DDR4 (Double Data Rate 4) by a cache module; the key management module generates a key used for data encryption through an SM2 algorithm; the data encryption module realizes hardware encryption through the SM4 algorithm module; and the HDMI output interface module converts the encrypted audio and video data into an HDMI format and outputs the converted audio and video data at an HDMI TX interface. According to the high-speed data encryption method based on FPGA hardware logic, an optical module interface and an HDMI interface are combined, and an efficient and safe audio and video data encryption solution is provided.

An embodiment of a mind-view communication apparatus includes a first portable unit and a second portable unit. The first portable unit includes an eyeglass frame, at least one first optical unit disposed on the eyeglass frame for capturing at least one scene image corresponding to a field of view of a user, and at least one second optical unit disposed on the eyeglass frame for capturing at least one eye image corresponding to at least a portion of at least one eye of the user. The second portable unit is in communication with the first portable unit and includes at least one processor configured for receiving the at least one scene image and the at least one eye image, determining a direction within the field of view to which the at least one eye is directed based upon the at least one eye image, and generating a subset of the at least one scene image based on the determined direction.

The invention provides a transmission time sequence dynamic configurable simulation image high-speed injection system and an operation method thereof, and the method comprises the steps: image transmission time sequence generation and system control software generates a simulation image transmission time sequence, controls NVMe SSD simulation image writing, and manages simulation image information and storage address information; recording a corresponding relation between a simulation image transmission time sequence and image storage information, and controlling the ARM-based transmission time sequence management module to start and stop working and select a task mode; the ARM-based transmission time sequence management module receives a simulation image transmission time sequence file through a network or a serial port for storage and management, and controls the FPGA-based simulation image transmission module to perform image transmission and start and stop; and the simulation image transmission module based on the FPGA receives the control command, reads a simulation image of the NVMe SSD, and outputs the simulation image through an optical fiber according to a transmission time sequence and a simulation image format requirement. According to the invention, a camera image transmission time sequence can be verified and a simulation image injection source can be provided for other equipment.

The invention discloses a collaborative multi-satellite target detection method and system based on federated learning and a storage medium, and the method comprises the steps: S1, a plurality of satellites train lightweight detection models according to the local private image data of the satellites, and the local model training comprises heterogeneous data adaptation and local model updating; s2, the ground central server receives model parameters obtained by training each satellite, and performs federal aggregation processing to generate a global model; s3, taking the ground multi-source visual large model as a teacher model, taking the global model as a student model, performing feature layer distillation and output layer distillation to obtain an optimized global model, and further obtaining global parameters; and S4, updating local models of the satellites according to the global parameters, and detecting corresponding image data of the satellites. The embodiment of the invention aims to solve the problems of low model convergence efficiency and large heterogeneous data deviation in federated learning, finally realizes efficient sharing and co-evolution of model parameters among multiple satellites, and improves the generalization ability and detection precision of in-orbit small-model cross-satellite deployment.

The invention belongs to the technical field of video secure transmission, and particularly relates to an ultra-high-definition video secure transmission method and system, and the method comprises the steps: carrying out the dynamic partitioning of a video frame based on a CNN, and marking a security level; the key region adopts a quantum key to distribute a dynamic key to carry out AES-256 encryption, and the non-key region implements chaotic stream encryption; distributing a low-delay dedicated channel for the key data through an SDN reinforcement learning model; the receiving end performs layered decryption on the recombined video after verifying the validity of the quantum key; the system correspondingly comprises an intelligent blocking module, a quantum encryption gateway, a self-adaptive transmission controller and a credible decryption terminal, the 8K video encryption delay is smaller than or equal to 9.8 ms, the key data packet loss rate is smaller than or equal to 0.3%, and quantum computing attack is resisted.

Provided is a video processing method and system, a video playback system, an apparatus, a device, and a medium in the technical field of video processing, and the method includes: acquiring an input video frame and display parameters of the input video frame when it is displayed, the display parameters including at least one of a video format and a resolution; processing the input video frame into a plurality of output video frames based on the display parameters, each output video frame corresponds to a partial region of the input video frame; and displaying the plurality of output video frames on a plurality of display devices so that the plurality of output video frames are displayed according to the display parameters.

Extensometer (10) for measuring strain / stress on a test specimen (200) in a material testing device (190), comprising: - an imaging device (16) for producing an image of a test sample (200) which is subjected to a stress-inducing load; - a calculating device (30, 22, 24) for receiving the image of a test sample (200), for determining the movement of targets (202) on a test sample (200) and for determining the strain / stress from the determined movement of the targets (202); and - an output device (400) for outputting the specified strain / stress in real time, characterized by that the imaging device (16) and the calculating device (22, 24) are located on a single printed circuit board (15), wherein the computing device (30, 22, 24) comprises a field-programmable gate array (22) and a microprocessor (24), and wherein the entire data path from image data input to output takes place in hardware, and that the extensometer (10) has an input for receiving a trigger or synchronization signal to initiate operation or time stamping and, upon receipt of the signal, to generate a time-stamped image of the test sample (200), and that the output device (400) is designed to output the specified strain / stress along with the image with the timestamp.

The present disclosure provides a computer-implemented method for communication with radio frequency (RF) amplifiers in a hybrid fiber-coaxial (HFC) network, the computer-implemented method including: providing, by one or more computer processors, return communications from one or more RF amplifiers to a headend; and providing, by the one or more computer processors, forward communications from the headend to the one or more RF amplifiers, wherein: the return communications and the forward communications use out of band (OOB) communication protocols.

An interactive method is disclosed. The interactive method includes monitoring, using a monitoring module, operational data of a live broadcast of a live broadcast platform, the operational data of the live broadcast including at least one of operational data of the live broadcast associated with a model and operational data of the live broadcast of other models of the live broadcast platform; determining, using a determination module, execution information in response to the operational data of the live broadcast satisfying triggering of a reminder event, wherein the execution information includes determining an application module as an execution object for executing a corresponding reminder operation; and executing, using the application module, the corresponding reminder operation in response to the execution information, wherein the corresponding reminder operation is configured to characterize the reminder event to the model.

The invention provides a non-IP architecture light moment seat control system and method. The system comprises a comprehensive control terminal, a workstation, a light moment host and a plurality of groups of seats, the comprehensive control terminal generates a scheduling instruction according to a pre-acquired seat demand and sends the scheduling instruction to the workstation, and generates a control instruction according to the pre-acquired seat demand and sends the control instruction to the light moment host; the work station is electrically connected with the optical moment host through at least two sending link optical fibers, and the work station executes a scheduling instruction, converts audio and video signals into optical signals and sends the optical signals to the optical moment host; the optical moment host receives the optical signal sent by the work station, executes the control instruction to match the corresponding seat, and sends the optical signal to the corresponding seat; and each seat is electrically connected with the optical moment host through at least two receiving link optical fibers, receives the optical signals and converts the optical signals into audio and video signals for display. According to the invention, a non-IP architecture non-inductive scheduling data transmission mode is adopted, and the data transmission reliability is improved.

The utility model relates to a vehicle-mounted video acquisition system and vehicle equipment, and belongs to the field of electronics and electrics. The vehicle-mounted video acquisition system comprises a camera device, a coaxial cable and a vehicle controller, the camera device is connected to the vehicle controller through the coaxial cable, the camera device comprises an interface circuit, and a first signal end of the interface circuit is connected with a central lead of the coaxial cable; the input end of the voltage converter is connected with the voltage connecting end of the interface circuit; the output end of the serializer is connected with the second signal end of the interface circuit, and the power supply end of the deserializer is connected with the output end of the voltage converter; the power supply end of the image sensor is connected with the output end of the voltage converter, and the video signal output end of the image sensor is connected with the output end of the serializer. The method can help to improve the definition of the video collected by the vehicle-mounted camera equipment.

The invention discloses a noise suppression circuit and image acquisition equipment, the noise suppression circuit comprises a power supply noise sampling circuit, a noise conversion circuit and a noise elimination circuit, the power supply noise sampling circuit is connected with an interface and a power supply circuit, and is used for extracting electric power from the interface and providing the electric power for the power supply circuit, sampling current of the power supply circuit and eliminating noise; obtaining a current interference signal; the noise conversion circuit is connected with the power supply noise sampling circuit and is used for converting the current interference signal into a voltage interference signal; the noise elimination circuit is connected with the interface and the noise conversion circuit, and is used for carrying out noise reduction processing on the uplink signal received by the interface based on the voltage interference signal. Through the above mode, the problem that the current fluctuation signal and the low-frequency uplink signal cannot be eliminated when the frequency bands are overlapped can be solved, so that the probability of error codes in uplink data demodulation is reduced, and the communication reliability and the communication efficiency are improved.

The invention mainly discloses an intranet and extranet information exchange method, which is characterized in that an intranet computer display is connected with an input node only through a video line, and comprises the following steps that: an intranet computer loads a video signal to be transmitted and displays the video signal on the display of the intranet computer; the input node receives a video signal from an intranet computer display and forwards the video signal to the output node; the output node carries out screenshot on the received video signal, carries out OCR identification, generates state information according to an OCR identification result, transmits the state information to the input node, and sends the OCR identification result to an external network computer; the input node modifies the EDID field of the input node according to the received state information, and the intranet computer reads the EDID field through the DDC channel and adjusts the video page switching operation according to the EDID field. And secure transmission and efficient processing of data are ensured.

The present technology is to enable a transmitter device to read appropriate device information (EDID) from a receiver device with a reduced burden on the user. A memory unit that stores first device information and second device information, and a communication unit that communicates with an external device are included. The control unit determines to cause the external device to read the second device information, on the basis of reception of a rewrite signal for the first device information from the external device. It is possible to cause the external device (a transmitter device) to read appropriate device information (EDID) from a receiver device (a reception device) with a reduced burden on the user, and thus, user-friendliness can be increased.

Provided in the embodiments of the present disclosure is a video transmission device. In the video transmission device, a video transceiving unit has two functions of receiving a video and sending a video, and a wireless communication unit can implement transceiving of video data in a wireless manner, such that the video transmission device can be multipurpose, i.e., the video transmission device can be used as both a wireless video-transmission transmitting device and a wireless video-transmission receiving device, so as to adapt to different scenarios. In addition, the video transmission device can further be integrated with a display unit, allowing the video transmission device to function as a monitor regardless of whether same is used as the transmitting device or the receiving device, thereby facilitating a user in watching, anytime and anywhere, a video that is sent or received by the video transmission device, which is highly flexible and convenient.

The invention discloses an onboard transmission and storage method suitable for inclined aerial remote sensing equipment, and belongs to the technical field of aerial remote sensing. The airborne array adopts a full SSD disk, a ground downloading disk array selects a full mechanical hard disk (HDD) and an RAI D5 level as the core configuration of the disk array, the RAI D5 divides data into a plurality of small blocks, distributes and stores the small blocks on the plurality of hard disks in the array, adds parity check information on each hard disk, and adopts the RAI D5 level data-containing stripline storage, and the RAI D5 level data-containing stripline storage is carried out on the RAI D5 level data-containing stripline storage, so that the RAI D5 level data-containing stripline storage and the RAI D5 level data-containing stripline storage. Read-write operation is carried out on the multiple hard disks, parallel processing is achieved, and the data access speed is increased. According to the method, a large amount of data generated in unit time is acquired according to the requirement of live-action three-dimensional for the ground resolution of the image, onboard oblique aerial remote sensing data are effectively transmitted and stored, the onboard storage speed and storage safety of the oblique aerial photography system are improved, and therefore the working efficiency and the data safety are effectively improved.

The invention is suitable for the technical field of seat cooperation, and provides a non-IP type optical fiber seat cooperation system, which comprises an audio and video input acquisition node, an audio and video output display node, a seat operation node and an audio and video dedicated switch, the audio and video input acquisition node and the seat operation node are both used for converting an acquired signal into an optical fiber signal, performing data marking on the optical fiber signal according to a private protocol, and transmitting the optical fiber signal to the audio and video special switch; the audio and video dedicated switch is used for receiving optical fiber signals of the audio and video input acquisition node and the seat operation node, and distributing the optical fiber signals to the audio and video output display node or the seat operation node according to the USB control signal; and the audio and video output display node and the seat operation node are both used for converting the optical fiber signal into a cooperative signal and displaying an image digital signal of the cooperative signal on the display equipment. The non-IP type optical fiber agent cooperation system has the advantages of being high in transmission efficiency, low in delay, stable and reliable.

Described herein is a data processing device (100) including an input (102) for receiving an input signal including a data stream to be processed. A reconfigurable transversal filter (106) is adapted to perform one or more temporal signal processing functions on the input signal to produce one or more processed output signals (110-114). Filter (106) includes an optical frequency comb generator (108) to generate a plurality of discrete, equally spaced frequency channels (116). Filter (106) also includes a modulator (132) configured to modulate the input signal with each frequency channel (116) to generate modulated frequency channels having the input data stream encoded therein. An optical delay device (136) selectively applies a frequency dependent temporal delay to each of the modulated frequency channels such that each of the modulated frequency channels are temporally shifted by a predefined temporal period to produce delayed modulated frequency channels. Filter (106) also includes an optical spectral shaper (138) is configured to selectively apply respective amplitude weightings to the frequency channels (116) before or after modulation and delay. Filter (106) further includes one or more photodetectors (140-144) configured to sum one or more of the delayed modulated frequency channels to generate the one or more processed output signals. Device (100) also includes a controller (130) configured to dynamically control the amplitude weightings to the frequency channels (116) to define the signal processing functions.

The utility model discloses an HDMI all-optical transmission assembly, which comprises a transmission cable, a transmitting module and a receiving module, the transmission cable comprises a plurality of optical fibers, the transmitting module is arranged at a first end of the transmission cable, the receiving module is arranged at a second end of the transmission cable, and the receiving module comprises a boost submodule. The boost submodule is used for sensing the light emitted by the emission module and converting the light into a + 5V electric signal which is used as excitation voltage of hot plugging. According to the HDMI transmission assembly, the boost sub-module is arranged, so that all-optical transmission can be realized without adopting a hybrid cable or additionally arranging equipment such as a USB plug, and the structure of the HDMI transmission assembly is effectively simplified.

A deep learning-enabled system for the display or projection of high-resolution images is disclosed that is based on a jointly-trained pair of an electronic encoder network and an all-optical decoder network to synthesize / project super-resolved images using low-resolution wavefront modulators. The electronic encoder network rapidly pre-processes the high-resolution images of interest so that their spatial information is encoded into low-resolution (LR) modulation patterns, projected via a low SBP wavefront modulator. The all-optical decoder network processes this LR encoded information using thin transmissive layers that are structured using deep learning to all-optically synthesize and project super-resolved images at its output FOV. Results indicate that this diffractive image display system can achieve a super-resolution factor of ˜4, demonstrating a ˜16-fold increase in SBP. The system can be scaled to operate at visible wavelengths and be used for large FOV and high-resolution displays that are compact, low-power, and computationally efficient.