26 results about "Multimedia data transmission" patented technology

The invention is suitable for the technical field of data processing, and provides a multimedia data sending method, a terminal and a server, and the method comprises the steps: responding to a layout setting operation initiated by a user, and generating first layout information corresponding to first multimedia data specified by the user according to a setting parameter corresponding to the layout setting operation; the first layout information is used for determining a first area in the first multimedia data; and generating at least one piece of second multimedia data containing the first area based on the first layout information. According to the technical scheme provided by the invention, the first area needing to be reserved by the user can be accurately determined, so that the derivative area data reserving the area data of the first area in the original multimedia data is generated, the accuracy of generation of the derivative area data is further improved, and the efficiency of batch generation of the derivative area data can also be improved.

The invention relates to an intelligent photo album management method and system, electronic equipment and a storage medium. The method comprises: according to a first geographic position of a user access device, multimedia data of the user access device is transmitted to an edge node, and the user access device is a device for a user to log in an intelligent photo album; storing the multimedia data in the edge node, and realizing service processing of the intelligent photo album on the multimedia data through the edge node; and transmitting the multimedia data subjected to service processing to the user access equipment. According to the scheme provided by the invention, the intelligent photo album data synchronization efficiency and the user experience can be effectively improved.

This application relates to the field of Internet of Things (IoT) technology, and in particular to a method and system for personnel safety monitoring in chemical industrial parks based on dual-channel heterogeneous data transmission and multi-source fusion. The method synchronously collects environmental parameters and inertial data through mobile sensing terminals; constructs an extended Kalman filter model to tightly couple and fuse ultra-wideband positioning coordinates with inertial dead reckoning data to correct cumulative drift in predicted values; employs a vertical distance threshold trajectory compression algorithm at the edge to eliminate redundant positioning points on linear paths, reducing transmission load; dynamically adjusts the radius of the electronic fence based on gas concentration and determines fall events by combining acceleration amplitude temporal characteristics; and utilizes a dual-channel WiFi collaborative mechanism to normally upload lightweight data via a low-power channel, only activating the high-speed channel to upload on-site images when boundary crossings or fall anomalies are detected. This application effectively solves the technical problems of low positioning accuracy, multimedia data transmission bandwidth conflicts, and delayed safety warnings in industrial sites.

The present application provides a multimedia data transmission method and its system, which relates to the technical field of video data transmission. By performing inter-frame difference decoding verification on the original video stream collected by the multimedia server side, a core data stream is obtained. The core pixels transmitted by the multimedia server side are determined from the core data stream. Based on the core pixels, image reconstruction is performed on the image frames in the original video stream to obtain a core reconstructed image. Morphological filtering is performed on the core reconstructed image according to the pixel information of the core reconstructed image to obtain reconstructed core points and boundary tampering points. Then, spatio-temporal correlation aggregation is performed on the boundary tampering points through temporal features and spatial features to obtain a correlation aggregation image. Finally, the correlation aggregation image is repaired and transmitted through the image repair operator determined by the reconstructed core points to obtain the video stream received by the multimedia client. The present application can achieve anti-tampering filtering and repair of video data during efficient video transmission to improve the quality of the video stream received by the multimedia client.

The invention discloses a multimedia data processing method for same-screen interaction of a cloud mobile phone. The multimedia data processing method comprises the following steps: the cloud mobile phone obtains multimedia data requests of all terminal equipment participating in same-screen interaction; allocating a first dynamic transmission parameter to the terminal device based on a hardware constraint condition of the terminal device; allocating a second dynamic transmission parameter to the terminal device based on a network constraint condition of the terminal device; fusing the multimedia data request, the first dynamic transmission parameter and the second dynamic transmission parameter to generate a data processing task corresponding to the terminal equipment; and the cloud mobile phone executes the data processing task and performs multimedia data interaction with the terminal equipment. Based on the invention, the cloud mobile phone can select the optimal multimedia data processing mode based on the multimedia data request of the terminal equipment and the hardware constraint condition and the network constraint condition of the terminal equipment, so that smooth multimedia data transmission service can be provided for the terminal equipment, and the user experience is ensured.

A method, apparatus, device, and storage medium for implementing a multimedia data transmission system, which relates to the field of computers. The method includes parsing a target XML configuration file to obtain information about the link layer to be run, information about the modules to be connected, and information about the device parameters to be filled; constructing a link layer object containing a link structure based on the information about the link layer to be run and the information about the modules to be connected; constructing multiple module layer objects containing module structures through the information about the modules to be connected, connecting them to the link layer object, and creating a main thread task for the module layer objects; constructing a device layer object containing a device structure corresponding to the module layer object, connecting it to the module layer object, and filling the device structure based on the information about the device parameters to be filled; the link layer object controls the main thread task to call a target driver based on a device callback function through the link structure, and realizes data transmission through the target driver, the module structure, and the device structure, so as to achieve flexible integration of the IP core and reduce the development cycle.

The application discloses a multimedia data transmission method and device based on multiplexing XDMA and a storage medium, relates to the technical field of data transmission, and discloses a multimedia data transmission method based on multiplexing XDMA, which comprises the following steps: encapsulating multiple paths of multimedia data into a combined transmission frame, each path of multimedia data is divided into multiple logical data segments containing data source identifiers and time sequence identifiers; transmitting the combined transmission frame to a host memory through a single XDMA channel, and establishing virtual channels corresponding to the multiple paths of multimedia data; analyzing the received combined transmission frame according to the data source identifiers and the time sequence identifiers, determining the distribution position of the logical data segment in the memory block through address calculation; based on the distribution position, the data source identifiers and the time sequence identifiers, the combined transmission frame is split and reorganized into each path of multimedia data; and each path of multimedia data is output to an application layer through the corresponding virtual channel, so that multiplexing of multiple paths of multimedia data based on a single channel is realized.

The embodiment of the invention discloses a multimedia data processing method and device, equipment and a readable storage medium. The method comprises the following steps: if multimedia data containing a plurality of multimedia frames is stored in a cache region, acquiring transmission loss information of multimedia data transmission with a receiving end; inputting the transmission loss information into a preset optimal rearrangement model, and calculating a target arrangement sequence for rearranging the arrangement sequence of the plurality of multimedia frames; on the basis of the target arrangement sequence, executing a disruption operation on the arrangement sequence among the plurality of multimedia frames to obtain a plurality of disrupted multimedia frames; and sending the plurality of disordered multimedia frames to a receiving end, so that the receiving end executes a restoration operation for the arrangement sequence on the plurality of disordered multimedia frames to obtain restored multimedia data. Through the method, the influence of transmission loss on the playing quality of the multimedia data can be reduced.

The application relates to the technical field of multimedia data transmission, and particularly relates to a multimedia data transmission method and system. The method determines a target space unit where a gaze point is located according to gaze point data of each client, and determines a plurality of peripheral space units covered by a view cone according to a view cone range parameter of the client; a highest enhancement precision level is allocated to the target space unit of each client, and a corresponding enhancement precision level is allocated according to the distance between the plurality of peripheral space units of each client and the gaze point; a predicted target space unit of the client is predicted according to the gaze point data change track of the client in a historical time period; a predicted attention client quantity distribution paying attention to the predicted target space unit is acquired, and model data corresponding to the enhancement precision level of the predicted target space unit is transmitted to the corresponding client according to the predicted attention client quantity distribution, so that the user experience in a virtual reality environment is effectively improved.

The invention relates to a data sending rate estimation method and device, equipment, a storage medium and a program product, and relates to the technical field of network transmission. The method comprises the following steps: acquiring multimedia data, and modeling a network transmission link for transmitting the multimedia data as a target queuing model; in the current calculation period, determining model parameters of the target queuing model; determining performance index parameters of the network transmission link according to the model parameters; determining the sending rate of the multimedia data according to the performance index parameters; the sending rate enables the earnings of a network transmission link to be maximum; the earnings of the network transmission link are determined and obtained based on the performance index parameters. By adopting the method, the real-time performance of multimedia data transmission and the network bandwidth utilization rate can be balanced.

The invention relates to a vehicle multimedia data display method, a B column controller, a system and a vehicle. The method is applied to a B column controller. The method comprises the following steps: receiving multimedia data of at least one scene uploaded by a user and sent by a cabin controller through an Ethernet physical layer; storing the multimedia data to a storage medium through the system-on-chip; receiving a trigger signal related to the target scene sent by the cabin controller through the controller local area network transceiver; detecting whether a multimedia data display condition corresponding to the target scene is met or not according to the trigger signal through the micro-control unit, and if yes, sending an enable signal corresponding to the target scene to a system-on-chip; and responding to an enable signal corresponding to the target scene through the system-on-chip, reading multimedia data of the target scene from the storage medium, and transmitting the multimedia data to the B-column display screen for display. The multimedia data of various scenes can be self-defined, and different hobbies of different users can be met.

The invention provides a screen sharing method and device, electronic equipment, a storage medium and a program product, and relates to the technical field of cloud technologies, cloud conferences, intelligent transportation and the like. When the sharing instruction is received, the sub-processes can be started through the main process, and the communication connection between the processes is established; performing multimedia data acquisition through the sub-process screen display page to obtain screen multimedia data; the screen multimedia data comprises screen picture data and screen audio data; therefore, recording of pictures and audios of the screen is realized. The screen multimedia data is sent to the host process based on communication between the processes, and the host process transmits the screen multimedia data to the server, so that the screen display page is shared to each session object; as the online video session is realized by the host process, the services of the to-be-shared screen and the host process can be transmitted based on one session instance; the to-be-shared screen does not need to be screenshot frame by frame, the performance consumption is reduced, and the screen sharing practicability is effectively improved.

Embodiments of the present application provide a multimedia data transmission method and apparatus, a medium, and a device. The method comprises: calculating in real time a playable duration corresponding to multimedia data in a buffer; and if the playable duration does not exceed a target expected delay, reducing a first playback speed of the multimedia data in the buffer. According to the embodiments of the present application, a playable duration is compared with an expected delay, and whether to regulate a current playback speed is determined according to the comparison result, thereby avoiding picture freezing.

The invention discloses a multimedia data transmission method and device based on multiplexing XDMA and a storage medium, relates to the technical field of data transmission, and discloses the multimedia data transmission method based on multiplexing XDMA, which comprises the following steps: packaging multiple paths of multimedia data into a combined transmission frame, each path of multimedia data is divided into a plurality of logic data segments containing data source identifiers and time sequence identifiers; transmitting the combined transmission frame to a host memory through a single XDMA channel, and establishing a virtual channel corresponding to the multi-channel multimedia data; analyzing the received combined transmission frame according to the data source identifier and the time sequence identifier, and determining the distribution position of the logic data segment in the memory block through address calculation; splitting and recombining the combined transmission frame into each path of multimedia data based on the distribution position, the data source identifier and the time sequence identifier; and each path of multimedia data is output to the application layer through the corresponding virtual channel, so that single-channel-based multiplexing of the multi-path multimedia data is realized.

Embodiments of the disclosure provide method, apparatus, electronic device and storage medium for multimedia data transmission. The method includes: in response to a data transmission request, obtaining original multimedia data to be transmitted; in response to a preset special effect processing condition being met, determining a target special effect processing mode of the original multimedia data based on a preset special effect processing mode, wherein the preset special effect processing mode at least comprises a central processing unit mode and a graphics processor processing mode; and performing a special effect processing on the original multimedia data based on the target special effect processing mode to obtain target transmission multimedia data.

The embodiment of the invention provides a multimedia data transmission method and device, electronic equipment and a storage medium, and relates to the field of multimedia data transmission. The method comprises the following steps: in response to first multimedia data of a first object collected by collection equipment, sending a first request to a server, obtaining a first plug flow address and the first multimedia data sent by the server, and uploading the first multimedia data as plug flow data to the first plug flow address; a second request is sent to the server, second multimedia data serving as a second object of the pull stream data are obtained from the first pull stream address, and the second multimedia data are used for being played by the playing device; wherein the acquisition device and the playing device are different devices. According to the embodiment of the invention, multi-device cooperation for collecting and playing the multimedia data is realized, and the collecting and playing tasks can be distributed according to the performance of different devices.

A multimedia data transmission apparatus and method are provided. In the method, a data receiver receives at least one channel of multimedia data and transmits the received multimedia data to a selector and a data synthesis module. The selector selects target multimedia data from the received multimedia data and transmits the target multimedia data to a data processing module. The data processing module performs a format conversion on the target multimedia data to obtain converted data and transmits the converted data to a data transmitting module. The data synthesis module synthesizes the received multimedia data to obtain synthesized data and transmits the synthesized data to the data transmitting module. The data transmitting module transmits the converted data to a first processing device and transmits the synthesized data to a second processing device.

The present application is applicable to the field of display screen technology, and provides a communication device and a display control system, wherein the communication device includes a first processor, multiple communication interfaces, a multimedia data output interface and multiple protection circuits; the first processor is respectively connected to the multiple communication interfaces and the multimedia data output interface; each communication interface is correspondingly connected to a protection circuit; the multimedia data output interface is connected to the multimedia data input interface of the display control device through the multimedia data input interface, and the decoded multimedia data is transmitted to the display control device. It can connect a variety of peripheral devices compatible with the communication interface and improve the anti-interference, anti-static and lightning protection capabilities of the communication interface.

The invention relates to a multimedia data processing method and device and a storage medium, and relates to the technical field of multimedia, and the method comprises the steps: responding to a specified operation, and obtaining target multimedia data corresponding to the specified operation, the specified operation comprising at least one of a photographing operation, a screen capturing operation, a recording operation and a screen recording operation. And sending the target multimedia data to a receiving end through a preset communication connection, so that the receiving end synchronously displays the target multimedia data in a designated area of a display interface of the receiving end. The multimedia data corresponding to the specified operation is sent to the receiving end through the preset communication connection, so that the receiving end can synchronously display the target multimedia data, and the efficiency, timeliness and convenience of multimedia data transmission are improved.

1. Name of the design product: HDMI high-definition cable (2.1 8K). 2. Use of the design product: For multimedia data transmission. 3. Design key points of the design product: Lies in the shape. 4. Picture or photo that best shows the design key points: Stereogram.

The invention relates to the field of multimedia data transmission, in particular to a modular multimedia OPS playing box which comprises an OPS module, a first module and a second module. The OPS module comprises a CPU (Central Processing Unit) module; the CPU module is used for acquiring a first signal, the CPU module is used for converting the first signal into an HDBaseT signal and sending the HDBaseT signal to the first module, and the first module is used for converting the HDBaseT signal into an HDMI (High Definition Multimedia Interface) signal; acquiring a second signal, sending the second signal to the first module by the CPU module, and sending the HDMI signal and the second signal to the second module by the first module; the second module comprises a video module and a screen assembly, and the video module receives the HDMI signal, converts the HDMI signal into an LVDS signal and is used for driving the screen assembly; and the screen assembly is connected with the plurality of multimedia integrated displays, so that the plurality of displays can display different contents at the same time. According to the invention, the HDBaseT and OPS technologies are adopted to carry out modular design on the equipment, the advantages of high-performance calculation and long-distance transmission are fused, and the maintenance is easier.

The invention discloses a cross-device multimedia data stream transmission method, a storage medium and a vehicle, and the method comprises the steps: obtaining a multimedia data stream collected in real time, and continuously monitoring the use condition of a main buffer region used for temporarily storing the multimedia data stream; dynamically evaluating whether the capacity of an effective buffer area for temporarily storing the multimedia data stream needs to be adjusted or not according to the use condition of the main buffer area; and if it is determined that the capacity of the effective buffer area needs to be adjusted, adjusting the capacity of the effective buffer area to store the multimedia data stream. By monitoring the use condition of the main buffer area in real time and dynamically adjusting the capacity of the buffer area for temporarily storing the multimedia data stream based on the monitoring result, a buffer mechanism capable of adaptively adjusting the buffer capacity according to the actual load is formed, the situation that the multimedia data is discarded due to insufficient capacity of the buffer area is avoided, and the service life of the multimedia data stream is prolonged. The continuity of multimedia data transmission and the fluency of the screen projection process are remarkably improved, and better screen projection experience is provided for users.

Embodiments of the disclosure provide method, apparatus, electronic device and storage medium for multimedia data transmission. The method includes: in response to a data transmission request, obtaining original multimedia data to be transmitted; in response to a preset special effect processing condition being met, determining a target special effect processing mode of the original multimedia data based on a preset special effect processing mode, wherein the preset special effect processing mode at least comprises a central processing unit mode and a graphics processor processing mode; and performing a special effect processing on the original multimedia data based on the target special effect processing mode to obtain target transmission multimedia data.

The embodiment of the invention discloses a multimedia data circulation method and device, electronic equipment and a program product. The method is applied to a first electronic device and a local area network connected with the first electronic device, and a plurality of second electronic devices are further included. The method comprises the following steps: collecting multimedia data; encoding the multimedia data through an encoding module according to the target encoding parameter to obtain a media stream; wherein the target coding parameter is determined according to transmission capabilities corresponding to a plurality of data transmission channels among a plurality of electronic devices under the local area network; and sending the media stream to each target second electronic device through a data transmission channel with one or more target second electronic devices. According to the multimedia data transfer method and device, the electronic equipment and the program product, the power consumption generated by the first electronic equipment can be reduced while a one-to-many multimedia data sharing function is realized, and the stability of multimedia data transmission is ensured.

The invention discloses a method for remotely monitoring videos inside and outside a vehicle, a cloud server, the vehicle and a system. The method is applied to the cloud server. Wherein the cloud server comprises an audio-video cloud server and a vehicle control cloud server which are mutually independent; the method comprises the following steps: when a mobile terminal has a video viewing demand, transmitting a function starting command actively issued by the mobile terminal to a vehicle bound with the mobile terminal through a control link so as to wake up the vehicle; wherein the control link is a control parameter transmission link at least composed of a vehicle control cloud server and a vehicle; transmitting a video control parameter actively issued by the mobile terminal to the vehicle through the video transmission link, so that the vehicle shoots a target video clip according to the video control parameter; wherein the video transmission link is a multimedia data transmission link at least composed of an audio-video cloud server and a vehicle; and transmitting the target video clip to the audio-video cloud server through the video transmission link, and transmitting the target video clip to the mobile terminal for viewing by the audio-video cloud server.

Embodiments of the disclosure provide method, apparatus, electronic device and storage medium for multimedia data transmission. The method includes: in response to a data transmission request, obtaining original multimedia data to be transmitted; in response to a preset special effect processing condition being met, determining a target special effect processing mode of the original multimedia data based on a preset special effect processing mode, wherein the preset special effect processing mode at least comprises a central processing unit mode and a graphics processor processing mode; and performing a special effect processing on the original multimedia data based on the target special effect processing mode to obtain target transmission multimedia data.