58results about How to "Avoid Huaping" patented technology

The embodiment of the invention provides a video data decoding method and device, and the method and device are used in the Internet of scenes. The method comprises the steps: receiving a video sequence sent by a node server, wherein the video sequence comprises an intraframe coding frame; and judging whether packet loss happens to the intraframe coding frame or not: abandoning the video sequence if the packet loss happens to the intraframe coding frame, or else, carrying out the decoding of the intraframe coding frame. According to the embodiment of the invention, the method guarantees the integrity of the video sequence, and avoids the mosaic phenomenon during video playing.

The invention discloses a packet loss processing method, a packet loss processing device and packet loss processing system of a video transmission process. The method comprises the following steps: detecting whether a data packet of a video frame has packet loss, the video frame is received at present, if having packet loss, stopping video decoding and informing a video sending end for performing a video updating operation; detecting whether the updated video frame sent by the video sending end is received, and decoding the updated video frame after receiving the updated video frame. According to the technical scheme, the decoding process is stopped immediately while the packet loss is detected for some video frame, the image flower screen phenomenon is avoided, the video sending end is informed for updating the video and the Caton time is reduced to the minimum. The video playing efficiency and the user experience are improved by adopting the method.

The embodiment of the invention discloses a live video processing method and device, a terminal and a storage medium. The method comprises the following steps: in response to a live video playing instruction, starting an operation of creating a video playing view corresponding to a first window, and rendering a live video stream to an off-screen surface in real time; in response to request information of switching the live video playing window from the first window to the second window, creating a video playing view corresponding to the second window; destroying a video playing view corresponding to the first window; and after the video playing view corresponding to the second window is created, shunting and displaying the video on the off-screen surface in the video playing view corresponding to the second window. The video on the off-screen surface is directly shunted and displayed in the video playing view, so that the live video is quickly displayed after the video playing view iscreated, and the phenomena of screen blurring and jamming are avoided.

The invention provides a control method and a control device based on IPTV playing mode switching. The control method comprises the steps of receiving a mode switching request through a data control channel, wherein the mode switching request is used for requesting playing mode switching from a current first mode to a second mode; acquiring media data from a server through a data flow channel according to address information which is carried in the mode switching request, wherein the data control channel and the data flow channel are independent from each other; testing whether the media data correspond with the second mode; and if not, discarding the media data, and performing decoding on the condition that the received media data correspond with the second mode. According to the control method and the control device, because the acquired media data are processed before decoding, problems of standstill and screen blurring in decoding are prevented.

The invention provides a method for solving a blurred screen phenomenon produced by a video stream transmission system. The method comprises the following steps: importing a message queue and an intermediate proxy, wherein the message queue is used for caching video stream transmitted to a client by a server through a UDP protocol, and the intermediate proxy judges whether the video has been sentto the client after receiving a downloading request and cookie sent by the server; if the video stream has been sent to the client, judging whether the packet loss phenomenon is existent in the videostream cached in the message queue at the first time, if the packet loss phenomenon is existent, re-caching, and continuously enabling the server to send the data cached at the second time to the message cache to cache; when the packet loss phenomenon is inexistent, keeping the video stream of the downloading request received by the server again from caching to the message queue, wherein the intermediate proxy directly takes the video stream in the message queen to send to the client. The existent blurred screen problem due to packet loss or streaming phenomenon is solved, and then the technical problem that excessive bandwidth is wasted since the server resends the video stream is further avoided.

The invention provides a channel switching method and device, which are applied to a digital television. The digital television is connected with a CAM card for descrambling TV programs. The method comprises the following steps: when the digital television plays a scrambled program under a DTV channel, if detecting that the digital television is switched from the DTV channel to another channel, sending a descrambling interrupt instruction to the CAM card, wherein the descrambling interrupt instruction is used for indicating the CAM card to empty descrambling information of the scrambled program. The method can solve the problem of poor user experience caused since a longer audio/video mute state time duration has to be set to prevent the phenomenon of blurred screen or flash screen when the digital television is switched from other channels to the DTV channel.

The invention discloses a method for supporting local refreshing of any display area, and the method comprises the steps: dividing a to-be-compressed image into a plurality of original data blocks, and storing the original data blocks in a frame buffer after compression; obtaining the position and the size of a local refreshing area; judging whether the local refreshing area comprises an incompletely refreshed original data block area or not; if yes, receiving image data of the local refresh area, expanding the incompletely refreshed original data block area into a completely refreshed original data block area, compressing a data block corresponding to the incompletely refreshed original data block area, storing the compressed data block in a frame buffer, compressing a data block corresponding to the expanded original data block area, and storing the compressed data block in a local refreshing buffer; and reading the compressed data in the frame buffer and the local refresh buffer, decompressing the compressed data, performing pixel line splicing processing, and displaying the decompressed compressed data in a display system. The display device can support local refreshing of anydisplay area, and the problems of messy codes, blurred screens and the like in the image display process are effectively avoided.

The invention discloses a live broadcast signal source inductless switching control method and a control system, wherein, the method comprises the following steps: A. the encoding parameter of the original live broadcast signal source is set in an encoder and the decoding parameter of the original live broadcast signal source is sent to a terminal; B. the encoder encodes the live video stream in the original live broadcast signal source and sends it to the terminal, and the terminal decodes and plays the data output from the encoder; C. whether the live broadcast management background sends out switching instruction is checked, if not, step B is executed; if yes, step D is executed; D. the terminal keep playing the original live broadcast video stream, and the live broadcast server retrieves the encoding and decoding parameter of the new live broadcast signal source; E. the encoding parameter of the new live broadcast signal source is set in the encoder, and the decoding parameter of the new live broadcast signal source is sent to the terminal; F. the encoder encodes the live video stream in the new live broadcast signal source and sends it to the terminal; G. the terminal decodesand plays. The invention can smoothly switch to a new live broadcast signal source for playing, avoids the phenomenon that the terminal is subjected to blurred screen and black screen or can not play,and improves the user experience.

The invention discloses a picture display method which is suitable for being executed on a mobile terminal. Pictures comprise a plurality of pictures arranged in sequence, each picture has a corresponding index value, a current picture is displayed on a screen of the mobile terminal. The method comprises the following steps: receiving a sliding operation of a user on the screen of the mobile terminal; determining an index value of a target picture to be finally switched to according to the sliding operation; determining the time for switching from the current picture to the target picture according to the index value of the current picture and the index value of the target picture; and calculating an index value of a next picture to be switched to regularly according to the index value ofthe current picture and the index value of the target picture during the determined time period of switching from the current picture to the target picture, and switching the next picture regularly until the next picture is switched to the target picture. The invention also discloses a corresponding picture display device and a mobile terminal. According to the technical scheme, a user can conveniently, quickly and continuously switch and browse the pictures.

The invention discloses an FPGA (Field Programmable Gate Array), a double-screen television, a startup display method, startup display equipment and a medium. A VBO-RX module in the FPGA is used for sending a first signal to an MCU (Microprogrammed Control Unit) when the VBO-RX module does not receive a stable image signal; a graphic card generation module is used for receiving a starting commandsent by the MCU after receiving the first signal, and generating a LOGO image to be displayed on a lower panel according to graphic card information of the pre-stored LOGO image; and an output end TXmodule is used for receiving a LOGO image to be displayed on the lower panel and sending the LOGO image to the lower panel for display. According to the invention, when the VBO-RX module does not receive a stable image signal, the VBO-RX module is switched to the VBO-RX module; the MCU controls the graphic card generation module to start, and generates the LOGO image according to the pre-stored graphic card information, thereby providing time buffer for stable connection between the image signal and the VBO-RX module, and avoiding the problem of black screen or blurred screen during startup display.

The invention discloses a reversing radar camera shooting device and a camera shooting system based on same. The reversing radar camera shooting device comprises a wire, a plug, and a housing. The housing contains a lens support, multiple terminals fixed in a rear housing, and a PCB connector electrically connected with the wire. A lens and multiple copper shafts extending towards the rear housing are installed in the lens support. Each terminal is equipped with a contact portion in contact with the copper shaft. Each contact portion comprises a central circular ring and contact arms which are uniformly distributed on the periphery of the circular ring and is tangent to the arc of the outer circle of the circular ring. Each circular ring is provided with a gap through which a copper pin passes. After each copper pin passes through the corresponding gap, an abutted portion is fixed in a space defined by the multiple contact arms and each contact arm adheres to the abutted portion. According to the reversing radar camera shooting device, the contact area between the copper shafts and the terminals is enlarged and tangency design enables no gaps between the copper shafts and the terminals so that good electric contact is guaranteed between the copper shafts and the terminals. As a result, a phenomenon of unclear display or no display is prevented when a vehicle reverses.

The invention discloses a freight market information management platform. The freight market information management platform comprises a platform server system, a driver information management system, a merchant logistics information LED screen release system, an entrance guard and payment system and a touch query system. The driver information management system, the merchant logistics information LED screen release system, the entrance guard and payment system and the touch query system are connected with the platform server system respectively. Compared with the prior art, the freight market information management platform can conduct systematic management on personnel going into or out of a freight market and conduct unified release of logistics information, so that information acquisition on drivers is accelerated; in addition, by means of a Webservice and single-row double-locking mode, LED information is transmitted in a one-to-many multi-thread mode, and the phenomenon that a blurred screen, a dead screen and the like can happen easily when multiple client sides request for LED information service simultaneously is avoided.

The invention provides a long strip LED screen. The screen comprises a control card and multiple unit plates. The unit plates comprise multiple first unit plates and multiple second unit plates. The first unit plates are connected to the control card in a first cascading manner so as to form at least one string of first unit plates. The second unit plates are connected to the control card in a second cascading manner so as to form at least one string of second unit plates. The cascading direction of the first cascading manner is opposite to that of the second cascading manner. The at least one string of first unit plates and the at least one string of second unit plates are spliced together into a long strip LED screen body. Thus, the on-load length of the control card of the long strip LED screen can be increased.

A dual-system mainboard intelligent touch panel comprises a supporting frame and a touch screen arranged in the supporting frame. The supporting frame comprises a rear cover. A display drive board module, a computer host, a power panel and a T-CON board are arranged on the rear cover. A CON plate; The display driver board module comprises an Android display driver board and an OPS daughter card. The Android display driver board and the OPS daughter card are spliced and integrated into a whole structure; T. The output end of the Android display driving board is connected with the touch screen;T. The display driving board module is in electric signal connection with the computer host; T. The T-CON board is connected with the Android display driving module through a connecting line terminal;and a power board is electrically connected with the computer host, the T-CON board and the Android display driver board module. Power panel, computer host and T- And the CON board and the Android display driver board module are electrically connected. The display device is simple in structure and convenient to assemble, stable operation of the display effect can be achieved, after-sales maintenance is easy and reliable, the production cost of products is reduced, modular production management can be achieved, and modular standard operation is achieved.

The invention relates to the technical field of automobile instrument panel control, in particular to an automobile instrument self-adaptive backlight control system and method. The control system comprises an automobile body controller which is in communication connection with an automobile instrument system, wherein the automobile instrument system comprises a first single-chip microcomputer, and a configuration module and a display screen which are in communication connection with the first single-chip microcomputer; and the automobile body controller comprises a second single-chip microcomputer, and an illumination sensor in communication connection with the second single-chip microcomputer. The automobile instrument self-adaptive backlight control system and method solve the problems that the existing instrument panel backlight control adopts a setting menu and a small lamp signal for adjustment, but the mode is relatively poor in self-adaptive dimming effect and driving experience, and the driving safety is influenced since the existing backlight display technology is easy to cause a blurred screen fault when exposed under the high-temperature environment .

A display integrated machine comprises a support frame, wherein a display screen is internally arranged in the support frame, and a computer host computer, a power board, a T. CON board and display drive board module; The display driving plate module comprises a display driving plate and an OPS daughter card; The display driving board and the OPS daughter card are merged into an integral structurethrough splicing and are connected with the electric signal of the computer host computer. The output end of the display driving board is connected with the display screen; The T-A CON board and thatdisplay drive module are connected with each other through a connecting line terminal. The power board and the computer host, T. Electrical connection between the CON board and the display drive board module. The invention has the advantages of simple structure, convenient assembly, and avoiding the phenomenon that the connecting wire terminals are oxidized in the environment of long-term high temperature and high humidity to cause the flower screen and the flash screen of the integrated machine. The invention has the advantages of simple structure, convenient assembly, and avoiding the oxidation of the connecting wire terminals in the environment of long-term high temperature and high humidity. Increased productivity. The quality is more guaranteed, and the safety performance is better.

The invention discloses a pressure transmitter under a special environment of-40-200 DEG C. The pressure transmitter comprises a transmitter shell and a circuit board arranged in the transmitter shell, a temperature measuring element is arranged on the circuit board; the ox horn socket of the circuit board is connected with a liquid crystal display device; the circuit board is also provided with asingle-chip microcomputer chip. The transmitter shell is in threaded connection with a sensor connecting device; a pressure sensor is arranged in the sensor connecting device; a pressure change signal is transmitted to the pressure core body through the sensor connecting device; the pressure core body converts the signals into voltage signals and current signals through internal digital bridge signals, the signals are transmitted to the circuit board through the sensor connecting circuit, and the signals are processed, amplified and calculated to obtain digital signals to be displayed on theliquid crystal display device. The pressure transmitter has the characteristics of good metering stability, reliability and accuracy.

The invention discloses an image transmission device, which adopts multiple high-speed serial transceivers to simultaneously transmit one image signal. Since the bandwidth requirements of the high-speed serial transceivers are not high, a low-bandwidth high-speed serial transceiver can be used for transmission. Compared with the way of video codec chip transmission, the cost is reduced. When the input image data bandwidth is high, such as ultra-high-definition resolution signals, 3D signals, etc., the transmission can be completed by increasing the number of high-speed serial transceivers. The device also performs phase synchronization encoding on the image signal at the sending end, and adopts corresponding measures at the receiving end to ensure phase synchronization between multiple transceivers, so as to avoid blurred screen phenomenon caused by image data misalignment.