69results about How to "Avoid frame drops" patented technology

The invention provides a video editing method and device based on IOS equipment. The IOS equipment is provided with a first buffer area and a second buffer area. The method comprises the steps that after a video editing instruction is received, whether first editing data exist in the first buffer area or not is judged, wherein the video editing instruction comprises the route information of target rich media data; if yes, the first editing data are acquired and previewed in real time; if no, a first data acquiring request is generated; whether second editing data exist in the second buffer area or not is judged according to the first data acquiring request; if yes, the second editing data are acquired and rendered, and the first editing data are generated and stored in the first buffer area; if no, the corresponding target rich media data are acquired according to the route information, the target rich media data are decoded, and the second editing data are obtained and stored in the second buffer area.

The invention relates to a real-time image processing and display device of a digital X-ray equipment, including: an image processing module, which receives the external image data by an image input module for processing; an image display and storage module, which receives data processed by the image processing module and outputs to the image display device; a microcontroller, which controls the actions of the image processing module and the image display and storage module according to the command of a main control equipment of the X-ray machine which is sent from an external interface; an image processing storage, which is connected with an image processing and storage controller in the image processing module; an image display cache memory, which is connected with an image display cache memory controller in the image display and storage module, and an image storage, which is connected with an image storage controller in the image display and storage module. The invention is stable, reliable and fast in image processing speed; furthermore, the invention has the functions of real-time image processing, displaying and replaying of the medial images, displaying and real-time image subtraction of the reference image under the perspective or continuous exposure mode, as well as providing the data to a computer and so on.

The invention relates to a camera cloud desk control system in a flight state of an unmanned aerial vehicle. The system is composed of a motor drive and control module, a remote control command processing module, an aerial image acquisition and transmission module, and a target detection and tracking module. According to the invention, angles of the camera cloud desk and the camera head can be adjusted in real time during the flight process of the unmanned aerial vehicle, so that the tracking shooting of a target is protected from being affected by flight direction changing. Meanwhile, synchronization of flight direction adjustment and the cloud desk returning is enhanced, so that frame losing and image jittering are avoided. Therefore, image stability of the unmanned aerial vehicle is improved substantially.

The invention discloses an LED display screen fault self-recovery control system. According to the control system, a storage unit is divided into two independent storage areas, one storage area is used for storing a program currently running on an LED display screen and display data of the LED display screen, the other storage area is used for storing a backup program, when the program currently running on the LED display screen has a fault or is updated, and the LED display screen automatically switches to the other storage area so that the backup program can run and the display data can be stored. The control system carries out automatic switching on the programs, a receiving card can be replaced without powering off the whole LED display screen, normal work of the LED display screen is not influenced, and the problems that in the prior art, an LED display screen control system cannot be updated on line when the programs are updated, and cannot recover by itself when having a grogram fault or data fault are solved.

The embodiment of the invention discloses a video real-time transmission data processing method, device and system, and aims to solve the technical problem of lack of a technical scheme for supporting multiple special effects in existing high-definition video live broadcast, and the technical problem of frame loss of video data under the situation of implementation of the special effects during high-definition video live broadcast since an existing video live broadcast special effect processing technology can only perform one-by-one circular processing. The video real-time transmission data processing method in the embodiment of the invention comprises the following steps: acquiring a live video special effect processing instruction; determining a corresponding algorithm number according to the live video special effect processing instruction; and creating a corresponding number of special effect processing channels in a CPU (Central Processing Unit) according to the algorithm number, and performing real-time video special effect processing on live videos at the same time according to algorithms in a GPU (Graphics Processing Unit) through the special effect processing channels.

The application discloses a data processing method and device. The method includes the steps of dividing n (n>/=2) storage areas from a memory; setting, at a time of arrival of each new data, corresponding data processing operations to one or more storage areas, the data processing operations including n logically associated operation types; and performing corresponding data processing according to the data processing operations respectively corresponding to the storage areas. According to the invention, the plurality of storage areas are divided, the corresponding data processing operations to the storage areas are set at the time of arrival of each data, and the corresponding processing operations are performed on the storage areas, so that the processing on image frames can be not limited to the time of one frame and the frame loss problem caused by that the data of a previous frame have not yet been processed completely and the data of a next frame have arrived.

The invention relates to an audio and video automatic synchronization method and synchronization system, which are used for network live broadcast. The method comprises the following steps of: receiving an audio stream and a video stream; extracting a key frame from the cached video stream; encoding the key frame, judging whether the key frame is successfully encoded or not, and if yes, selectingthe key frame as an initial frame; taking the initial frame as an audio and video synchronization starting point, enabling the video frames to automatically correspond to the audio frames one by one according to the time stamps, and discarding audio streams and video streams before the time stamps of the initial frame; and encoding the video frames and the audio frames which are in one-to-one correspondence so as to performing synchronously stream pushing on the video frames and the audio frames. According to the invention, the initial frame can be selected from the cached video streams, and the video frames and the audio frames corresponding to the video frames are played in sequence by taking the initial frame as the starting point according to the cached video streams, so that video oraudio frame loss is avoided and video skip is prevented.

The invention discloses a network video browsing method, which comprises the following steps that: at least one video acquirer acquires a video from a video server; a video encoder converts each frame of the video acquired by at least one video acquirer into a picture according to a tine sequence; and the video encoder sends the converted pictures to a client in real time. According to the network video browsing method, the problem of unclear video pictures caused by easy frame loss in the network video browsing method in the prior art, is solved; each frame of the video is converted into the picture according to the time sequence, and the video is transmitted to the client in the form of pictures, so that the phenomenon of frame loss during video browsing is avoided; and furthermore, the resolution of the pictures can be adjusted, so that the bandwidth occupation rate can be controlled.

The invention discloses a video frame rendering method and device, electronic equipment and a computer readable storage medium, and the method comprises: determining a target length N of a buffer container according to the obtained frame information in a preset time period and the maximum allowed frame drop frequency; when it is detected that the rendering FPS of the displayer is smaller than a preset threshold value and M video frames appear in the vertical synchronization period, rendering the (M-N) th video frame according to the arrival time sequence of all the video frames, and caching the N video frames which arrive lateto a buffer container, wherein M is greater than N; and when each subsequent vertical synchronization period is entered, rendering each video frame in the buffer container according to a first-in first-out principle, and updating the video frames in the buffer container. According to the method, the video frame is not lost, and the relationship between the fluency and the display delay of the picture is balanced, that is, the fluency of the picture is ensured within an acceptable display delay range, and the user experience is improved.

The invention discloses an image accelerator and a related method. The image accelerator comprises a rasterization module, wherein, a rasterized first set of primitives becomes a first group of pixels and generates information of the first group of pixels; a process internal module acquires a pixel vale from a memory according to the information received from the rasterization module, then performs mathematical calculations to the pixel value and generates one or more processed image layers; and a process intermediate module that synthesis the one or more processed image layers received from the process inter module with other image layers received from the memory, outputs the synthesized image for displaying. The image accelerator and the related method can make the image rending process more smooth, and can greatly reduce or even avoid frame losing.

The invention discloses an incremental absolute grating ruler-based absolute displacement detection method. The method included the following steps that: an incremental type grating ruler is marked, so that the incremental type grating ruler can be converted into an incremental absolute grating ruler, and the uniqueness of each grid line is guaranteed; grating images are collected and de-noised, and the grid lines of the grating ruler are extracted, a neural network model for deep learning is established, each grid line is trained, and the trained neural network model is stored; a mathematical model for displacement detection is established, the image of a grating ruler to be subjected to displacement detection is collected, and the trained neural network model is used for carrying out grid line recognition, and a recognized grid line number is fed back to the mathematical model, so that a displacement detection value can be calculated. According to the method of the invention, the incremental type grating ruler is converted into the incremental absolute grating ruler; the functions of the absolute grating ruler are realized through an incremental mode; and the manufacturing precision of the grating ruler is greatly reduced.

The invention provides an instrument linked with an application system. The instrument comprises a controller, a display screen and a user input apparatus, wherein the display screen and the user input apparatus are connected with the controller; and the controller is connected with the application system, and is set to be used for constructing a page according to application data and driving information from the application system, transmitting the page to the display screen for displaying, and transmitting a corresponding control command to the application system according to the operation of the user input apparatus. The invention also provides a linked instrument and application system. According to the instrument linked with the application system, as well as the linked instrument and application system provided by the invention, the controller is set to be used for constructing the page according to the application data and the driving information from the application system, transmitting the page to the display screen for displaying, and transmitting the corresponding control command to an entertainment information system according to the operation of the user input apparatus, so that the linkage of the instrument and the application system is realized, and more applications can be conveniently extended and operated on the instrument.

The embodiment of the invention discloses wearable equipment, a processing system and method of environment image data and a readable medium. The wearable equipment includes a first interface, a second interface and a processor. The processor is connected with an image sensor through the first interface, and is used for receiving the environment image data collected by the image sensor; the processor is connected with an inertial sensor through the second interface, and is also used for receiving motion data of the wearable equipment sensed by the inertial sensor; and the processor is connected with control ends, and is also used for calculating and obtaining posture data of the wearable equipment according to the environment image data and the motion data, and generating a map processingmessage according to the environment image data. The wearable equipment can asynchronously send related data to the other control ends, better avoid the frame loss problem, and quickly display a sceneof a virtual-reality (VR) scene, an augmented-reality (AR) scene or the like in time.

The invention relates to a 5G vehicle-road cooperation speed guide control method, system and device and a storage medium, belongs to the field of vehicle-road cooperation, and aims to solve the problems of short pure signal communication distance, limited communication data frame length and data frame loss at present. The 5G vehicle-road cooperation speed guide control system includes a roadside subsystem, a vehicle-mounted subsystem and a signal control unit, the roadside subsystem receives an external vehicle-road signal, and the roadside subsystem and the vehicle-mounted subsystem are directly connected through a PC5 for two-way communication; the vehicle-mounted subsystem receives a communication signal from the signal control unit and feeds back road condition information provided by the road side subsystem to a driver; the 5G roadside CPE arranged on the roadside subsystem and the 5G vehicle-mounted CPE arranged on the vehicle-mounted subsystem are both in bidirectional communication with the signal control unit through Uu ports, and a closed-loop control system is formed to complete speed guidance. Through a speed guiding algorithm, a reasonable vehicle driving speed interval is provided, the red light waiting time is reduced, the vehicle parking frequency is reduced, and the vehicle average delay time at the signalized intersection is reduced.

The invention discloses a receive-side Scaling circuit for multi-core processor dynamic grouping management. The circuit includes a TCP/IP head extraction module, a Hash _ Function module, a Hash _ Mask module, an indirect table query module, a CPU _ Result calculation module and an RSS register module; the TCP/IP head extraction module is linked with an MAC module for completing encapsulation, deblocking, sending and receiving functions of data frames; the CPU _ Result calculation module is linked with an RQP module for allocating the data frames to different receiving arrays; the RSS register module is linked with the TCP/IP head extraction module, the Hash _ Function module, the Hash _ Mask module, the indirect table query module and the CPU _ Result calculation module separately. The receive-side Scaling circuit effectively achieves dynamic grouping management of CPU cores in a multi-core processor system so that the CPU cores with high load can be shut down in real time, and the processing performance is dynamically adjusted during data reception to make the network throughput rate reach the maximum value.

The invention discloses a method, equipment and a system for preventing frame loss in process of video editing. The method comprises the steps of generating a virtual file chain table by a client and synchronizing to storage equipment, wherein the chain table comprises a plurality of chain table nodes, and each chain table node comprises a number and a description field of a file fragment; reading the data of a first file fragment from the number of the first file fragment in a request and returning to the client after the storage equipment receives a read request; determining a next chain table node of the chain table node including the serial number of the first file fragment in the virtual file chain table in accordance with the number of the first file fragment; obtaining the description filed of a second file fragment in a next chain table node; and storing the data of the second file fragment into a memory from the storage medium in accordance with the field, thereby hitting the data in the memory by each request and preventing the frame loss in process of video editing.

The embodiment of the invention discloses a processor frequency adjustment method and device, a storage medium and electronic equipment, and the method comprises the steps: taking a thread which determines the frame drawing length in one frame time of frame drawing in a current scene as a key thread when the frame drawing begins, and selecting the thread with the longest average running time of each frame in the key threads as a target thread in a past preset number of frame drawing processes., taking the average running time of each frame of the target thread as a target frame drawing load, and then adjusting the frequency lower limit of the current processor according to the target frame drawing load. According to the scheme, the frequency lower limit of the current processor is dynamically adjusted based on the target frame drawing load, so that when the frequency of the processor is adjusted, the frequency adjustment is more targeted based on the scene and the demand of the key load in the scene for the computing power, and therefore, in the scene with key thread operation, the problems of frame loss and jamming caused by over-low frequency drop of the processor are avoided.

The invention discloses a transmitting method of a video data, comprising: the transmitting end loads each GON corresponding to the frame video to the AL-SDU; the transmitting end transmits the compound AL-SDU to the receiving end; the receiving end separates the AL-SDU of the video data after receiving the compound data and checks the AL-SDU, putting the correct AL-SDU to the buffer array and re-transmitting the AL-SDU demand with the incorrect image head; the receiving end displays the correct AL-SDU in the buffer array. The invention also discloses a transmitting method, receiving method, transmitting system, transmitting device and the receiving device of the video data. The invention can avoid the situation that the AL-SDU segments the GOB and the confusion of the GOB code; so that the invention reduces the lost of the important data to reduce the situation of large area of mosaic or grey block for the receiving end.

The invention relates to the technical field of projection, in particular to a cross-screen projection method and device for a heterogeneous network. The invention provides a cross-screen projection method for a heterogeneous network, which is applied to a server and comprises the following steps that: enabling the server to receive instruction information sent by a terminal, wherein the instruction information comprises pairing relation information and media asset content parameter information; Acquiring a set top box identifier ID corresponding to the terminal according to the pairing relation information; And sending the media asset content parameter information to the set top box according to the set top box ID, so that the set top box retrieves watching content information from the metadata end according to the media asset content parameter information, and projects the watching content information to large-screen equipment. According to the invention, data transmission loss and frame loss and delay on a large screen in the prior art can be avoided.

The invention discloses an ECU refreshing method based on a CAN bus. The refreshing method comprises the following steps: detecting cache space and thread occupation information of an ECU; updating transmission parameters representing the receiving capability of the ECU according to the detected cache space and the thread occupation information; and feeding back the transmission parameter to a refresh tool to update the refresh frequency. The embodiment of the invention discloses a refreshing method. In the process of refreshing the ECU, the transmission parameters representing the receiving capability of the ECU can be updated according to the cache space and the thread occupation information of the ECU, so that the time interval of sending the refreshing message to the ECU by the refreshing tool is updated, and the transmission parameters and the time interval of refreshing the message are matched with the receiving capability of the ECU.

The invention discloses a video coding method, device and equipment and a readable storage medium, and relates to the technical field of multimedia. The method comprises the following steps: running acloud application program, wherein the cloud application program is an application program running in a cloud server; in the running process of the cloud application program, collecting desktop imageframes and rendering moments of the desktop image frames from a cache region; and determining a display timestamp of the desktop image frame according to the rendering moment of the desktop image frame, and encoding the desktop image frame. A desktop image frame and a rendering moment corresponding to the desktop image frame are obtained from a cache region; therefore, the rendering moment servesas the display timestamp of the desktop image frame in the encoding process, the rendering moment is kept consistent with the rendering moment of the desktop image frame in the final playing processof the terminal, the situation that frame loss and frame skipping exist in the playing effect due to the fact that machine time is adopted in the encoding process is avoided, and the playing accuracyis improved.