18 results about "Wireless video" patented technology

This invention discloses a wireless low-latency video receiver line block compression and linked recovery system, belonging to the field of wireless video transmission and display technology. After decoding at the receiver, the system performs line block-level visual lossless compression and storage of the image, replacing traditional whole-frame storage. The display side reads the compressed line blocks on demand, decompresses them, and stores them in a small-capacity display buffer. Combining innovative technologies such as adaptive line block compression strategies, intelligent prefetching mechanisms, multi-level error detection, dynamic buffer management, and frame rate linkage control, the system significantly reduces display latency and improves its recovery capability and display smoothness under wireless channel interference. While ensuring visual losslessness, it can reduce display latency by more than 50% and storage bandwidth requirements by more than 65%, making it suitable for latency-sensitive applications such as wireless projection, remote control, and video conferencing.

The invention relates to the field of video conferences, in particular to a wireless video conference system, which identifies the current class state of each student in a wireless video network class in real time by introducing an image identification technology, and judges whether the students have illegal attendance behaviors or not according to the identified class state result. The five violation coefficients are dynamically adjusted through violation attendance behaviors, the attendance management score of each student on the day is managed more reasonably, a comprehensive attendance module is combined to record the historical violation behaviors of the students, and the attendance management score of the students on the day is comprehensively calculated through the historical violation attendance behavior records of the students and the comprehensive calculation of the attendance management score on the day. And the attendance of the student on that day can be scored more scientifically and in a humanized manner.

The invention relates to a video monitoring method and system for intelligent parking wireless video equipment, and the method comprises the following steps: collecting a parking space image of a parking space region, and detecting whether the parking space image has license plate information attached to a vehicle or not; if yes, character and color recognition is carried out on the license plate information, and a license plate color number is obtained; if not, determining a parking space scene state of the parking space area based on the parking space image; and synchronizing to a parking management cloud platform based on the license plate color number or the parking space scene state, so that the management platform performs order charging management and parking space resource scheduling, and the technical problem of difficulty in urban parking is solved.

The application relates to the technical field of video equipment detection, and discloses an abnormality monitoring method and system for a wireless video equipment of intelligent parking, which collects monitoring data of a plurality of monitoring sources, integrates the monitoring data to generate multi-source monitoring data, performs preliminary fault analysis on the multi-source monitoring data based on a local terminal to obtain preliminary analysis information, uploads the multi-source monitoring data to a cloud platform to comprehensively analyze and infer the multi-source monitoring data, obtains deep analysis information, extracts abnormal event information from the preliminary analysis information and the deep analysis information, and executes corresponding management actions according to the abnormal event information.

The application relates to a video data encryption method and system of a smart parking wireless video device, which comprises the following steps: frame extraction and structured processing are performed on collected parking site videos to obtain structured plaintext data, a video signature string is obtained by string splicing of the structured plaintext data based on a preset device-specific key; MD5 hash operation is performed on the video signature string to obtain parking data signature; the structured plaintext data and the parking data signature are combined and encrypted in a JSON format to obtain parking data encryption messages; and the parking data encryption messages are sent to a server through an HTTPS protocol to complete video data encryption transmission, thereby solving the technical problem of data transmission safety risks in traditional modes.

The invention provides a high-definition wireless video stream data compression method based on a self-adaptive code rate, which aims at a scene that a wireless client cannot acquire a physical layer channel state and does not have cooperation of a server, and carries out gear selection on a fragment boundary only according to fragment downloading time consumption and a buffer margin. According to the method, a gear correction time-consuming residual error is introduced as a de-confusion discrimination amount, a tolerance threshold value and a separation threshold value are generated in combination with a buffer state, an interval drop point is determined, and the space between the two threshold values is defined as a residual error fuzzy region; and maintaining a continuous fuzzy count and an ambiguity level in the interval, updating a locking level when the evidence is insufficient, and gating a target code rate gear to jump up. And the fragmentation boundary gating state structure is used for uniformly bearing discrimination quantity, threshold value, interval and locking state information, so that false downshift and premature upshift are inhibited, gear fluctuation is reduced, and gear selection stability is improved.

1. The name of the design product: HDMI wireless video extender. 2. The use of the design product: for HDMI wireless video transmission. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: design 1 perspective view 1. 5. Design 1 is designated as the basic design.

The utility model discloses a wireless video monitoring device for an endless rope winch. The wireless video monitoring device comprises an endless rope winch main body, a monitoring mechanism, a mounting mechanism and an angle adjusting mechanism, after the endless rope winch main body is placed stably, a supporting plate is connected above the endless rope winch main body through a mounting mechanism; the monitoring mechanism comprises a camera and a wireless transmitter, a supporting column is arranged on the top face of the supporting plate, the camera is connected to the supporting column, the monitoring angle is adjusted through an angle adjusting mechanism, and the wireless transmitter is fixed to the bottom face of the supporting plate and connected with the camera in a matched mode through a data line. Compared with the prior art, the endless rope winch has the advantages that the monitoring equipment can be quickly fixed on the endless rope winch through the arranged mounting mechanism, complicated mounting steps or tools are not needed, and the mounting process is greatly simplified; an angle adjusting mechanism is arranged, a user is allowed to flexibly adjust a monitoring view angle according to needs, and the optimal view coverage range is ensured.

A camera device for vehicle safety. The camera device is connected to hardware and software systems installed in a vehicle and is equipped in the vehicle. The camera device facilitates autonomous driving systems including advanced driver assistance systems (ADAS), by utilizing its algorithms in conjunction with an electric power control unit (EPCU) and an electronic control unit (ECU), including a vehicle control unit (VCU). Further, the camera device facilitates real-time wired and wireless video transmission and storage through antenna modules of a display device and a camera device inside the vehicle, and can record emergency situations caused by traffic accidents during vehicle operation, as well as the on-site situation for before and after the accident, for use as video evidence. Additionally, the camera device operates when sensors in the vehicle detect physical and chemical changes during parking or stopping, allowing video footage of the vehicle damage site to be recorded.

The application belongs to the technical field of communication, and particularly relates to a video coding method, device, computer readable medium and electronic equipment. The video coding method comprises the following steps: obtaining historical intensity information in a historical time period, wherein the historical intensity information is used for representing network signal intensity of wireless video transmission corresponding to each historical moment in the historical time period; predicting intensity information of a next key frame according to the historical intensity information, wherein the intensity information of the next key frame is used for representing wireless network signal intensity of transmitting the next key frame; determining a target data amount of the next key frame according to the intensity information of the next key frame, and performing intra-frame coding on the next key frame according to the target data amount. The target data amount is determined in advance before the frame is coded, and then the next key frame is coded according to the target data amount, so that the transmission of the key frame can be completed in one uplink time slot, and the transmission is completed without waiting for a frame period, thereby reducing the transmission delay.

1. The name of the design product: HDMI wireless video extender. 2. The use of the design product: for HDMI wireless video transmission. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: design 1 perspective view 1. 5. The left view features have been embodied in other views, so the left view is omitted. 6. Design 1 is designated as the basic design.

The application provides a high-definition wireless video stream data compression method based on adaptive code rate. In the scene where a wireless client cannot obtain a physical layer channel state and there is no server cooperation, only the time consumption and the buffer margin at the fragment boundary are used for selection. The method introduces a gear correction time consumption residual as a de-mixing discriminant, generates a tolerance threshold and a separation threshold by combining the buffer state, determines the interval landing point, and defines the residual fuzzy area between the two thresholds. The continuous fuzzy count and the fuzzy degree level are maintained in the interval, the lock level is updated when there is insufficient evidence, and the target code rate gear up is gated. The fragment boundary gating state structure is used to uniformly bear the discriminant, the threshold, the interval and the lock state information, so as to suppress the mis-downshift and the premature upshift, reduce the gear fluctuation and improve the gear selection stability.

This invention discloses a low-latency decoding and stable display control method for segmented video streams, belonging to the field of wireless video transmission. The method includes: receiving segmented video streams and recording the arrival time of each segment; dynamically calculating a decoding start threshold based on historical frame reception statistics, and initiating decoding when the number of buffered segments reaches the dynamic threshold; writing the decoded output to a subsequent buffer without immediate display; comprehensively determining whether multiple factors such as frame integrity, decoding progress, buffer status, and display synchronization signal meet the stable display conditions; monitoring segment arrival delays and initiating delay compensation mechanisms such as predictive decoding, priority adjustment, and frame interpolation compensation. This invention, through a separation control mechanism for decoding and display initiation, combined with dynamic threshold determination, adaptive buffer scheduling, and delay compensation strategies, achieves coordinated control of low-latency decoding and stable display in a wireless environment, effectively avoiding problems such as screen tearing, flickering, and artifacts, and improving display stability and network adaptability.

A global wireless transmission device for a visual display system comprising an electronic display, the device configured to communicate with a cloud environment and receive data therefrom, the device comprising a communication connector configured to facilitate data transmission between said global wireless transmission device and an electronic display, a memory for storing a plurality of instructions for enabling data to be received from said cloud environment and for being displayed on the electronic display and a processor for executing said instructions.

The application discloses a kind of based on deep learning video joint source channel coding method, system, equipment, medium and product, it is related to wireless video transmission and deep learning technical field, this method includes: historical reconstruction frame is as time sequence reference, current video frame is input into coding network, generates latent variable of current frame, according to target rate configuration, the latent variable is adaptively filtered by dynamic rate control module, obtains the latent variable to be transmitted, obtains sending signal, receives signal after transmission by additive white gaussian noise channel, realize the joint mapping of source compression and channel transmission, the rough alignment feature is enhanced by using reference refinement network, obtain time sequence reference feature, through main decoder network is jointly modeled, with the weighted sum of rate constraint and reconstruction distortion as optimization goal carries out end-to-end joint training, overcome the sudden quality collapse, the repeated transmission of redundant information is reduced to a minimum, adapts dynamic bandwidth configuration.

The invention is suitable for the technical field of high-definition video wireless transmission, and provides a high-definition video wireless transmission control system, which comprises a video transmitting device, a video receiving device and video playing equipment, the video sending device comprises a video sending device, a video receiving device and video playing equipment; the video sending device comprises a content decomposition module, a bit grouping module, a network decomposition module, a field conversion module and a wireless sending module. The video receiving device comprises a wireless receiving module, a video decoding module, a decompression calculation module, a wireless transmission module, a wireless network module, a memory and a processing center, and the wireless receiving module, the video decoding module, the decompression calculation module, the wireless transmission module, the wireless network module and the memory are respectively connected with the processing center; the video playing device comprises a wireless communication module and a video playing module. According to the invention, the problems of time delay, lagging, low transmission image quality and the like during wireless video playing are solved.

The invention provides a multi-user wireless access system and method based on a thin-film lithium niobate broadband modulator, and relates to the technical field of wireless access, the method comprises an antenna, the thin-film lithium niobate broadband modulator and a multi-channel wireless signal demodulator, the thin-film lithium niobate broadband modulator is connected with the antenna, and the multi-channel wireless signal demodulator is connected with the thin-film lithium niobate broadband modulator. The thin film lithium niobate broadband modulator is electrically connected with the multi-channel wireless signal demodulator; the antenna is used for accessing multi-channel wireless video signals of multiple users and loading the multi-channel wireless video signals to the thin-film lithium niobate broadband modulator; the thin film lithium niobate broadband modulator is used for receiving the multi-channel wireless video signal and modulating the multi-channel wireless video signal to obtain a target multi-channel wireless video signal; and the multi-channel wireless signal demodulator is used for receiving the target multi-channel wireless video signal and carrying out video stream demodulation processing on the target multi-channel wireless video signal to obtain a target video signal. According to the technical scheme provided by the invention, stable access and accurate demodulation of multiple paths of wireless video signals are realized.