333results about "Electrical cable transmission adaptation" patented technology

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 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.

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.

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.

The invention provides a domestic substitution method of a CATV (Community Antenna Television) light receiving chip TAT6254C, which relates to the technical field of CATV light receiving, and comprises the following steps of: S1, chip substitution: carefully taking down a TAT6254C chip on an original circuit board, and welding a domestic GNA4118 chip on the circuit board according to a correct pin direction and position, S2, peripheral circuit adjustment: analyzing the difference of frequency response and balance characteristics of the two chips, and adjusting the frequency response and balance characteristics of the two chips according to the difference of the frequency response and balance characteristics of the two chips. Redesigning an output matching circuit, adjusting a frequency response and equalization circuit, optimizing the output matching circuit, and adjusting a chip drive and matching circuit. According to the domestic substitution method for the CATV optical receiving chip TAT6254C, a domestic GNA4118 chip is used for substituting an imported TAT6254C chip, so that the purchase cost of the chip is reduced, the risk caused by unstable supply of the imported chip is reduced, the risk of production interruption caused by shortage of the chip is reduced, the characteristics of the GNA4118 chip can be optimized by adjusting an output matching circuit, and the production efficiency of the CATV optical receiving chip TAT6254C is improved. And the performance of the circuit can reach or exceed the original level of using a TAT6254C chip.

Systems and methods for amplifying signals propagated along a span of cable that imposes a loss tilt, and such that the loss tilt is canceled so as to provide unity gain, by modulating amplification as a function of frequency of an amplifier adjacent the span.

The present invention may comprise: in order to receive an analog image signal, generating a camera initialization signal including operation period information of a camera; transmitting the camera initialization signal to a plurality of analog image signal transmission apparatuses; determining whether or not each of the plurality of analog image signal transmission apparatuses is ready to transmit the analog image signal; if determining that each of the plurality of analog image signal transmission apparatuses is ready to transmit the analog image signal, simultaneously transmitting a transmission command signal to the plurality of analog image signal transmission apparatuses; and receiving a plurality of analog image signals from the plurality of analog image signal transmission apparatuses.

Systems, methods and / or computer program products for dynamically generating interactive content at an edge node of an edge network. For each set of video frames received, altered frames cached by the edge network can be fetched (when available) and reused to deliver interactive content to users. Where cached content is not present or distinctly different content from previously delivered content is intended for delivery to user(s), edge node identifies hotspots within video frames to insert interactive content, defining a timing and location for insertion, selects content consistent with user insights and / or preferences as well as an interaction types and placements known to be preferred by the user requesting the video frames. The edge node uses video creation services to alter the incoming video frames into altered video frames, inserts selected content at corresponding hotspots within the video and applies the interaction types for presenting the content to the user.

Devices and methods that present a graphical user interface (GUI) by which a user may manually adjust the level and tilt settings of an amplifier in a communications network. The GUI preferably includes a plurality of user-interactive icons for making the adjustments, where the effects of the adjustments on level and tilt are contemporaneously shown in the display.

The application discloses a kind of based on dual optical fiber channel's airborne digital video transmission control system and method, belong to computer communication count field.The method includes collecting original video signal;According to the rule of odd-even row separation, video row data is distributed to odd row and even row buffer;Real-time monitoring buffer write state and maintaining write state parameter, according to field synchronization signal and write state parameter, alternately extract odd row video row data and even row video row data;The video row data extracted is framed respectively, then is sent in parallel by two independent optical fiber channels, and the sending timing of two channels is coordinated, frame alignment and interline alignment are maintained.The application can break through the bandwidth limit of single optical fiber channel, realize the real-time reliable transmission of high-resolution, high-frame-rate airborne digital video.

The utility model discloses a twelve-path multifunctional optical transceiver, which belongs to the technical field of digital signal transmission equipment, and comprises a shell, a main control module, a control assembly, an interface assembly and a display assembly, the interior of the shell is of a hollow structure, a power supply unit is arranged in the shell, the front side wall of the shell is provided with an exhaust outlet, and an exhaust fan is arranged at the exhaust outlet. The main control module is installed in the shell, the control assembly is installed in the shell, the interface assembly is installed on the rear side wall of the shell, two sets of power interfaces are arranged on the right side of the interface assembly, and the display assembly is installed on the front side wall of the shell and arranged on the right side of the exhaust fan. The problem that in the prior art, due to the fact that signal transmission equipment is single in interface type, transmission of different types of signals is difficult to achieve, and the requirements for high-bandwidth video transmission and network data transmission are difficult to meet at the same time is solved. The practicability of the equipment is improved, and the use scene of the equipment is enriched.

The system according to this embodiment aims to evaluate presentations in real time and propose improvement measures. [Solution] The system according to the embodiment comprises an audio analysis unit, a video analysis unit, a structural evaluation unit, and a custom feedback unit. The audio analysis unit analyzes the audio of the presentation. The video analysis unit analyzes the video of the presentation based on the results analyzed by the audio analysis unit. The structural evaluation unit evaluates the structure of the presentation based on the results analyzed by the video analysis unit. The custom feedback unit makes individual improvement suggestions based on the results evaluated by the structural evaluation unit.

The utility model discloses a video conversion circuit of an optical waveguide display screen, which comprises an MCU, the data transmission end of the MCU is connected with the data transmission end of a level conversion module, the data transmission end of the level conversion module is connected with the data transmission end of an optical machine, and the data sending end of a high-speed differential transceiver LVDS is connected with the data receiving end of a filtering module LVDS. The LVDS data transmitting end of the filtering module is connected with the LVDS data receiving end of the video bridging chip U7, and the MIPI data transmitting end of the video bridging chip U7 is connected with the MIPI data receiving end of the optical machine. Signal conversion and display can be stably carried out.

The invention discloses a high-speed multichannel video optical fiber transmission system and method, and belongs to the technical field of optical fiber communication. The invention aims to solve the problems of large delay and complex system during long-distance real-time transmission of a multi-channel high-definition video in the existing video transmission technology. The system comprises a transmitting end and a receiving end, the transmitting end comprises a plurality of analog-to-digital conversion modules, a first FPGA main control module and a light transmitting module; and the receiving end comprises an optical receiving module, a second FPGA main control module and a plurality of digital-to-analog conversion modules. Through a non-compression transmission scheme and in combination with a two-stage multiplexing architecture in the FPGA, high-quality and low-delay real-time transmission of eight paths of video signals on a single optical fiber at a rate of 2.5 Gb / s is realized, and the system has the advantages of simple system, high integration level, good flexibility and stable transmission effect.

The system according to this embodiment aims to automate meeting speeches and summaries, discussion facilitation, and document creation. [Solution] The system according to the embodiment comprises a speaking unit, a summarizing unit, a generation unit, a discussion unit, and a creation unit. The speaking unit automatically performs speech during the meeting. The summarizing unit summarizes the meeting content. The generation unit generates camera footage. The discussion unit sets the agenda and conducts the discussion. The creation unit creates the materials.

The invention provides a transmitting end, a receiving end, and a signal transmission system and method. Relates to the technical field of data transmission, and a transmitting end receives one or more of an HDMI signal, a USB signal, a control signal and a power supply signal through a corresponding interface. Each signal is converted into a plurality of signals transmitted by an adaptive network cable based on a processing chip or a processing module corresponding to the sending end; a chip for processing HDMI signals and a chip for processing USB signals are integrated on the main control board of the sending end, and the receiving end is similar to the chip, so that the cost is reduced. Furthermore, the plurality of signals are transmitted to a receiving end in a signal partition manner through a network cable comprising a plurality of pairs of twisted pairs, so that the receiving end restores and outputs the signals received and separated from the network cable through corresponding processing chips or processing modules, for an HDMI signal sending end, the HDMI signal is converted into a target format, and a compressed signal is compressed, output and transmitted to a receiving end through a network cable, so that the cost is reduced, HDMI and USB signals are simultaneously transmitted through a single network cable, and wiring is reduced.

The utility model discloses a high definition interactive fusion type set top box, it includes PON module, DVB module, optical communication module, first interface module, network state indicating lamp, first memory, second interface module, power indicating lamp and second memory, PON module and DVB module pass through internal PHY communication circuit communication, integration in a equipment, optical communication module, first interface module, network state indicating lamp and first memory all are connected to PON module, and second interface module, power indicating lamp and second memory all are connected to DVB module, PON module adopts the chip of RTL9603C type and realizes, DVB module adopts the chip of MC2416 type and realizes, the high definition interactive fusion type set top box of the utility model, through with PON module and DVB module integration in a equipment, and together through internal PHY layer connection, has improved operating speed, has improved user experience and reduced user cost.

The utility model relates to the technical field of communication, and discloses a multi-mode wireless video return device, comprising a housing, a transmission assembly fixedly connected to the outside of the housing and used for returning video data, four connecting shafts detachably connected to the bottom of the housing, and rotating balls rotatably connected to the bottoms of the four connecting shafts. The bottom of the rotating ball is fixedly connected with a supporting shaft, the outer portion of the supporting shaft is slidably connected with a plurality of sliding shafts, the rotating ball is fixedly connected to the bottom of the supporting shaft, and the bottom of the rotating ball is rotatably connected with a fixing seat. According to the device, when a device fixing environment vibrates, the fixing base is fixed in the environment and moves along with the environment, due to the existence of the rotating ball, the rotating ball and the supporting shaft connected with the rotating ball can rotate in a self-adaptive mode when the fixing base moves, and it is guaranteed that the device does not incline after the supporting shaft rotates through the multiple sliding shafts; therefore, the shock insulation effect is achieved.

A camera unit (100) capable of being attached to a display device (D) with a simplified configuration is provided. The camera unit (100) includes a camera main body (10), and a stand (20) configured to support the camera main body (10). The camera main body (10) includes a light receiving section (11) and a main body housing (12) in which the light receiving section (11) is accommodated. The stand (20) includes a first arm portion (21) configured to support the main body housing (12) for pivotal motion such that the orientation in an upward and downward direction of an optical axis (L) of the light receiving section (11) is adjustable, and a second arm portion (22) attached for pivotal motion to the first arm portion (21). The main body hosing (12) has a protrusion (12a) that projects downwardly at a lower portion (121) of the camera unit (100) in a use state of the camera unit (100).

Embodiments of the present disclosure provide a video transmission method, a robot, a medium and a product. The method comprises: collecting area video information by a plurality of video acquisition modules of a robot, determining module connection information corresponding to each video acquisition module, determining target video information corresponding to the video acquisition module according to the module connection information and the area video information, and transmitting the target video information to a master module of the robot according to the module connection information; wherein at least two video acquisition modules are connected in series through a coaxial cable; receiving the target video information through the master module, analyzing the target video information to obtain the area video information corresponding to the target video information, and determining acquisition environment information of the robot according to a plurality of area video information. Not only the complexity of wiring is reduced, but also the timely transmission of video information is ensured.

The invention discloses a high-resolution image calculation and display integrated method and system based on a photoelectric calculation hybrid architecture, and belongs to the technical field of image data processing, and the method comprises the steps: carrying out the combined modeling of the time domain gray scale response characteristics of a display panel and a space pixel structure, and constructing a display end prior template; an optical modulation mask is generated based on a template, physical modulation and coding sampling are carried out on an incident light field, a photoelectric mapping relation is utilized to establish a cross-domain correlation tensor as regularization constraint to reconstruct to-be-displayed image data adaptive to panel characteristics, and a display end prior template is combined to carry out consistency residual calculation to generate driving compensation correction. And finally synthesizing an optimized display driving sequence. A display end prior template is combined with optical coding to construct a cross-domain association tensor, and driving data is reconstructed by regularization constraint, so that compensation and optimization of space-time coupling characteristics of a display panel can be realized.

The system according to this embodiment aims to transcribe the contents of a meeting in real time, summarize it, and suggest the next course of action. [Solution] The system according to the embodiment comprises a collection unit, a summarization unit, and a proposal unit. The collection unit transcribes the audio of the meeting in real time. The summarization unit summarizes the content transcribed by the collection unit. The proposal unit proposes the next action based on the content summarized by the summarization unit.

The present application relates to electronic endoscope technical field, specifically, it relates to a kind of endoscope multiplexing line built-in MIPI-CSI signal long-distance transmission isolation enhancement device.It includes the control end module, receiving end module and power management unit integrated in multiplexing line, and power management unit is used to power control end module, receiving end module.Power management unit in the present application, by the high integration of control end module, receiving end module and power management unit in multiplexing line, signal conditioning and isolation enhancement unit of control end can effectively process original signal and inhibit common-mode interference, then with the equalization compensation and clock data recovery circuit of receiving end repair signal attenuation and timing distortion problem caused by long-distance transmission, to realize in complex electromagnetic environment still can stable output low jitter, high integrity video signal, fundamentally solve the problem of affecting diagnostic accuracy due to image delay, quality decline.

We provide the system. [Solution] A means for storing digital information acquired by information gathering means in a database, A means for detecting data inconsistencies by comparing new digital data with information in existing databases, A means of notifying the user of detected inconsistencies through an interface, A means for users to immediately correct digital content based on inconsistency information notified in real time, A system that includes this.

The present application relates to the technical field of target object trajectory determination, and provides a target object trajectory determination method, device, electronic equipment and computer readable storage medium.The method comprises the following steps: obtaining an optical pulse signal from an optical fiber; determining an optical pulse phase change and an optical pulse frequency change of the optical fiber caused by a target object according to the optical pulse signal; determining an action trajectory of the target object based on the optical pulse phase change and the optical pulse frequency change; and sending an alarm signal to a target device based on the action trajectory of the target object.The method can effectively solve the deficiency of traditional monitoring technology in the application of nuclear power plants, and significantly improve the reliability and efficiency of safety monitoring.

An image display system of a transportation means and an image display method of the transportation means are provided, and pertain to the field of image display technologies. In the image display system and the image display method, a first transmission path and a second transmission path are established between a control module and a display module. The control module may compare first image data transmitted through the first transmission path with second image data transmitted through the second transmission path, to determine that first displayed content is inconsistent with second displayed content, and therefore, to provide a reference basis for subsequent processing (for example, processing such as giving an alarm prompt or correcting the second displayed content) by the control module. According to the method, whether content displayed by the display module is accurate can be determined. If the content is inaccurate, subsequent processing may be performed in a timely manner, to ensure accuracy of an image displayed by the display module. This helps improve safety of a vehicle during use.

The invention relates to the technical field of photoelectric data transmission, in particular to a multi-path Cameralink digital image optical fiber transmission system for an aviation photoelectric pod. Comprising an image data sending unit, an optical fiber slip ring and an image data receiving unit which are sequentially connected, both the image data sending unit and the image data receiving unit take an FPGA as a core processor, and realize unidirectional transmission of optical signals through an optical fiber slip ring; the image data sending unit is used for receiving multiple paths of Cameralink digital image signals, converting the signals into optical signals after serial-to-parallel conversion and time-sharing coding, and sending the optical signals to the optical fiber slip ring; and the image data receiving unit is used for receiving the optical signal transmitted by the optical fiber slip ring, restoring the optical signal into a Cameralink digital image signal after photoelectric conversion and decoding reconstruction, and outputting the Cameralink digital image signal, so that the lossless transparent transmission of multiple paths of image signals is realized. The multi-path Cameralink image optical fiber lossless transmission device has the advantages that multi-path Cameralink image optical fiber lossless transmission is realized, the structure is simple, and the stability