49results about How to "Avoid Out-of-Sync Situations" patented technology

The embodiment of the invention discloses a transfer processing method and a transfer processing system for a multi-channel real-time streaming media file, and a receiving device. The method comprises the following steps of: receiving data packets on L streaming media channels by a client side in a way of aiming at a same streaming media program, wherein the system clocks of N streaming media servers are consistent; when a time variable phi is a nonblank value, recognizing whether timestamps TS on the data packets are more than the sum TC+phi of the current system moment TC of the client side and the time variable phi or not; if the timestamps are not more than the sum, abandoning the data packets; if the timestamps are more than the sum, storing the data packets in a corresponding buffer area playing queue according to a sequence from a small one to a big one of the timestamps TS; and when the TC+phi reaches the timestamp TS on a first data packet in the playing queue, decompressing, decoding and playing the data packets in the playing queue in sequence. According to the embodiment of the invention, the synchronous playing of the real-time streaming media files transferred in a multi-channel way can be realized, and the situation that a plurality of frames are asynchronous is avoided.

The invention discloses a production process full-period intelligent workshop system based on a digital twinning technology and a solving method. The system comprises a design planning module and a virtual-real synchronization module. The design planning module is used for building virtual components required by the digital twin of the automatic workshop in the virtual component design module, carrying out process design according to actual production requirements, arranging an automatic production line, and verifying a production line planning effect and a control program. The virtual-real synchronization module builds a real production line after verification, collects the operation data of the real production line, transmits the operation data to the data management and storage module, completes the synchronization between the real production line data and the digital twin data, and displays the virtual-real synchronization condition and the operation data, and finally guides the actual production by using the data processing result of the digital twin. The system and method run through the full life cycle of the production line, and production accidents and economic losses caused by design defects can be avoided; the simulation credibility is improved; and feedback control is performed on a real production line, so that major safety accidents and property loss can be effectively avoided.

The embodiment of the invention discloses a method for correcting local time, comprising the following steps: receiving the second clock signals sent by at least three clock sources through a clock server, obtaining the difference of the rising edge arrival time of every two second clock signals, judging whether the difference between the rising edge arrival time of one second clock signal and the rising edge arrival time of other second clock signals is larger than and equal to the prearranged threshold; and if so, correcting the local time according to the rising edge arrival time of other second clock signals. The embodiment of the invention also provides a corresponding clock server. In the embodiment of the invention, the clock source desynchronization can be discovered, and the second clock signal sent by the clock source is not used for correcting the local time, thus avoiding the desynchronization of client machines in large areas due to the desynchronization of clock source.

The invention relates to an unmanned aerial vehicle (UAV) air operation task allocation method and a UAV air operation task allocation device. For the condition that multi-rotor UAVs execute operation tasks on multiple candidate farmlands, UAV information, farmland information, spraying task time window information and pesticide information are acquired first; and then, according to the information and based on a preset model and a genetic algorithm, an optimal solution maximizing the total benefit of the model is obtained, and the optical solution is taken as the task allocation and path planning result of the operation. Compared with the existing method, the task and path planning of each UAV in the operation can be obtained automatically through the method, each UAV can execute an operation task automatically according to the task and path planning, the problem that UAVs are not coordinated is avoided, the efficiency of operation is increased, and the operation form of UAVs can be applied to a wider range of agricultural air operation.

The embodiment of the invention discloses a method and a system capable of synchronously restoring handshake. The method is as follows: when the emitting end of a state machine, which changes with time, is electrified again, state reset signals changing with time are sent to a receiving and controlling system in a manner of visible light signals; and the receiving and controlling system judges that the visible light signals are state reset signals when receiving the visible light signals, the state of the state machine is changed to the state indicated by the state reset signals. Due to the adoption of the method, the emitting end of a state machine can be in a synchronous state after being electrified again.

The embodiment of the invention discloses a page data processing method and device. The page data processing method includes: acquiring a processing request of page data; generating an event according to the processing request; determining a corresponding data source according to a target display assembly and processing content indicated by the processing request; determining all the display assemblies using the data source; and processing data content of these display assemblies on the basis of the event. The scheme can avoid the situation that data is not synchronized when different display assemblies use the same data source, can greatly improve the consistency of the data, and can improve the data processing efficiency.

The embodiment of the invention provides a signaling transmission system and method for live broadcast. The system comprises: a receiving module used for receiving an operation instruction sent by a live broadcast terminal, wherein the operation instruction comprises operation content of a live broadcast terminal user on a live broadcast interface and/or an address link corresponding to a selectedto-be-played video; an conversion module used for executing conversion operation on the operation instruction according to a preset conversion rule to obtain a converted control signaling; and a sending module used for selecting one signaling channel from pre-established signaling channels according to the control signaling, and sending the control signaling to a viewing end through the signalingchannel in order to make the viewing end execute corresponding operation according to the control signaling after receiving the control signaling. Based on the scheme of the invention, the stabilityof live broadcast operation can be ensured, and the live broadcast classroom experience of teachers and students is improved.

Embodiments of the invention disclose a device arbitration method and device. The method comprises: a first storage device sends an arbitration request message to an arbitration server; according to the arbitration request message, registration information of the first storage device and the situation that a second storage device does not take over host services, the arbitration server sends an instruction message to the first storage device to instruct the first storage device to take over the host services and deletes the registration information of the second storage device. The first storage device sends a reservation request message to the arbitration server and instructs the arbitration server to prohibit the second storage device from registering. The method and the device can avoid the possible situation that data is out of sync because a plurality of devices take over the host services at the same time, and improve the fault tolerance, reliability and security of a dual active arbitration system.

The invention discloses a multimedia file synchronous playing method based on data processing, a terminal and a medium. The multimedia file synchronous playing method based on data processing comprises the following steps of: sending synchronization information of a multimedia file to a second client, which needs to be synchronously played, so that the second client acquires the multimedia file which needs to be synchronously played according to the synchronization information; and after the second client acquires the multimedia file, synchronously playing the multimedia file with the second client. The multimedia file synchronous playing method based on data processing implements automatic synchronous playing of the multimedia file on different clients, and is simple to operate and high in accuracy of synchronous playing.

The invention belongs to the technical field of videos, and relates to a video stream switching method and device, a computer storage medium and electronic equipment. The method comprises the following steps: in response to a definition switching instruction for switching an original video stream, obtaining switching information corresponding to the definition switching instruction; determining a target switching frame in the current video stream according to the switching information, and determining a target video stream in a video stream set corresponding to the current video stream; and determining a target switching frame in the target video stream according to the target switching frame in the current video stream, and switching the original video stream to the target video stream from the target switching frame in the video stream. According to the method and the device, the problem that a plurality of video streams are asynchronous is solved, the situation that video pictures are asynchronous before switching and after switching is avoided, and the user experience is optimized; in addition, the player can download all the video streams from one address, so that unnecessary protocol overhead is reduced, and the phenomenon of blockage during video playing is avoided.

The disclosure relates to a video playback control method and a video playback control device, and relates to the field of video playback. The method comprises the following steps: when receiving a playback instruction, acquiring loading states of videos to be played, wherein there are at least two videos to be played; and when the loading states of the videos to be played are all the completion of loading, drawing the videos to be played. Through the above technical solution, only when the loading state of the decoding queue of each video to be played is the completion of loading, all the videos to be played are controlled to be drawn, that is, video pictures are presented to the user, so that the situation of asynchronous pictures of different videos caused by different decoding speeds of the videos to be played of different definitions can be avoided, and all the video files are started to be drawn at the same time, thereby making the files of all the videos to be played represent synchronized pictures in front of the user, and improving the user experience.

The invention discloses an accurate cutting device for plates for furniture production. The accurate cutting device comprises a bottom plate; a vertical plate is installed on the bottom plate; a top plate is arranged on the vertical plate; an electric telescopic rod is arranged on the bottom face of the top plate; a cutting head is arranged below the electric telescopic rod; a transverse plate isarranged below the cutting head, a supporting plate is arranged below the transverse plate; a chain plate conveying mechanism arranged on the right side of the transverse plate, and the chain plate conveying mechanism comprises two chain wheels and a chain plate; a gear is installed on the left side of the chain plate conveying mechanism; a first rack is arranged on the left side of a rear side gear; a first spring telescopic rod is arranged on the first rack; a second rack is arranged on the left side of a front side gear; a groove is formed in the first rack; a wedge-shaped block is arrangedin the groove; a mesh plate is arranged on the left and lower side of the transverse plate; a limiting block is arranged on the right side of the mesh plate; a movable plate is arranged on the limiting block; an arc-shaped rack is arranged on the bottom of the transverse plate; a stirring sheet is mounted on the right side of the mesh plate; and a brush is mounted above the left side of the meshplate. The accurate cutting device is convenient to use and easy to operate; feeding, discharging and cutting can be conducted synchronously, and the situation of asynchronization is avoided; and woodchips on boards can be cleaned during discharging, and cleaning is more thorough.

The invention discloses a temperature verification device system and a detection method. The temperature verification device system comprises a computer, first and second detection hosts and first andsecond power regulators; the computer is connected with the first and second detection hosts via communication connecting lines; the first and second detection hosts are connected with the first andsecond power regulators respectively; the computer emits a control instruction to the detection hosts; and the detection hosts receive a computer instruction and then control the power regulators to execute corresponding running programs. The system and communication stability is improved, and thermocouple detection and thermal resistance detection can be carried out synchronously but independently via two temperature detection control systems; and a honeycomb portable temperature component verifier can take heat away rapidly in the heat radiation detection process, the real-time temperature in the furnace cavity can be observed, and proper time to take the temperature component can be obtained accurately.

The invention provides a device and a method for transmitting camera signals. The device comprises a main board and a camera module and is characterized in that: the main board and the camera module are mutually connected through a network cable; the main board comprises a main control chip, and a crystal oscillation source and a multi-channel LVDS transmitter, which are respectively connected with the main control chip; and the camera module comprises a camera and a multi-channel LVDS receiver, which are connected with each other. The device of the invention has the advantages of guaranteeing that the camera data signals are strictly transmitted under the action of horizontal and vertical synchronous signals, along with low cost, simple circuit design and few long-distance control connecting wires of the camera.

The embodiment of the invention provides a live program state display method and display equipment. A live program data request is sent to a server. Live program data fed back by the server is received according to the live program data request. The live program data at least comprises live program display information and live program playing time. The live program playing time comprises starting time and ending time. The live broadcast state of the live broadcast program is determined according to the relation between the current time and the starting time and the ending time. The live program display information in the live program display interface is displayed, and a live state identifier corresponding to the live state is additionally displayed on the live program display information. According to the method and the display equipment provided by the embodiment of the invention, the state of the live program can be updated in real time according to the time information of the live program, the situation that the state of the live program checked by a user is not synchronous with the actual state of the live program is avoided, and the user experience is improved.

The invention discloses a sound sharing system, an earphone and a charging box thereof. The earphone comprises a first radio frequency circuit based on a Bluetooth communication protocol; a second radio frequency circuit based on a private protocol; the controller is respectively connected with the first radio frequency circuit and the second radio frequency circuit and is used for carrying out communication connection with the terminal through the started access and an adapter connected with the terminal when the terminal selects to start the access where the second radio frequency circuit is located; the radio frequency matcher is respectively connected with the first radio frequency circuit and the second radio frequency circuit; the antenna device is connected with the radio frequency matcher; wherein the signal delay of the path where the second radio frequency circuit based on the private protocol is located is lower than the signal delay of the path where the first radio frequency circuit based on Bluetooth communication is located. By applying the scheme provided by the invention, the condition of sound and picture asynchronization can be effectively avoided.

The present invention provides a method and device for feedback aiming at uplink data transmission. In the invention, downlink control information is employed to perform feedback aiming at uplink data transmission. Therefore, different downlink resources are used aiming at different user terminals to perform feedback of uplink data transmission so as to avoid out of synchronism of a base station and user terminals in the process of uplink data transmission.