67results about How to "Play synchronously" patented technology

The invention provides an audio / video synchronization method of a mobile multimedia broadcast system, which comprises the following steps: establishing a storage address of the decoded audio data and a mapping relation table of timestamps; inquiring the mapping relation table for the timestamps of the audio data according to the storage address, to which the playing audio data point, and acquiring the timestamps of the currently playing video data; and adjusting the video playing to the audio / video synchronization state according to the timestamps of the audio data and the video data. The invention compares the playing progress of audio and video on a real-time basis based on the characteristic that the audio data are uncontrollable, and provides the corresponding adjusting opinions, so that the audio / video synchronization under the condition that the terminal can not control the 'source' can be ensured, the audio / video data timestamp confirmation mechanism is adopted to overcome the defect that error codes exist in the broadcast channel transmission, the incorrect adjustment of the audio / video synchronization caused by the error codes is overcome, and the interference of the audio / video adjustment caused by the transmission error codes of the broadcast channel is restrained.

The invention provides a Bluetooth audio hybrid communication method suitable for a Bluetooth headset. The method includes the following steps that: a slave headset monitors and receives an audio datapacket sent by smart equipment to a master headset, and when the slave headset receives the audio data packet from the smart equipment at a certain SLOT, the slave headset sends an ACK packet to themaster headset; and when the master headset receives the audio data packet sent by the smart equipment and receives the ACK packet sent by the slave headset, the master headset sends an ACK packet tothe smart equipment at the next SLOT, and otherwise, the master headset sends an NACK packet to the smart equipment. The smart equipment provided by the invention only needs to establish a Bluetooth connection with the master headset, and the slave headset only performs monitoring; and the master and slave headsets do not need to forward the audio data packet through Bluetooth, and thus the powerconsumption of the master headset can be reduced.

The invention provides a method and system for achieving synchronous display of multiple screens. The method comprises the steps as follows: A, a source screen plays a video file, obtains screen image data and sends the screen image data to a target screen for synchronous play; B, the source screen sends address information of the played video file and current playing progress information of the video file to the target screen in real time; and C, the target screen reads data of the video file according to the address information and plays the data in a corresponding position of the current playing progress information. The invention further provides a system for synchronous display on the multiple screens. The video file is downloaded according to the source of the video file while a transmission screen image is played, so that sharing and secondary synchronization of the multiple screens can be achieved, seamless joint of playing screen shot and the playing video file is achieved, and accordingly, video synchronous, clear and smooth playing from a small screen device to a large screen device is achieved.

The invention discloses a method for synchronous live broadcast through multiple cameras. A plurality of digital high definition cameras are installed in the sports field according to different angles and regions; the plurality of digital high definition cameras perform live broadcast of the same game simultaneously; when the videos of the plurality of digital high definition cameras are gathered, a current timestamp is automatically added; after a director tool receives multi-channel video information, the size of a buffer zone is adjusted automatically according to the timestamp, and a proper delay duration is selected for playing the video. The multi-channel videos are played synchronously, so that video play smoothness is improved, and the frame consistency is guaranteed.

The invention discloses a live broadcast method, device and system, equipment and a computer readable storage medium, and the method comprises the steps: firstly caching unplayed audio and video datato a cache region, and carrying out the accelerated playing of the audio data in the unplayed audio and video data in the cache region when the audio and video data in the cache region reaches a firstthreshold value; and finally, playing the video data corresponding to the accelerated playing audio data. According to the invention, when the playing end is jammed, the audio data in the cache region is played in an accelerated manner, so that the time difference between the playing content of the playing end and the real-time live broadcast content is reduced while the integrity of the live broadcast content is ensured, and the synchronization of the playing content of the playing end and the real-time live broadcast content is automatically realized; moreover, the corresponding video datacan be played according to the audio data which is being played in an accelerated manner at present, so that the audio and the video are synchronously played, the watching experience of the user is improved, and the live broadcast method, device and system, the equipment and the computer readable storage medium can be widely applied to the technical field of the Internet.

The embodiment of the invention provides a multimedia data playing method and device. The method comprises the steps of: in the process of playing first multimedia data by adopting a first playing interface, when detecting out a switching triggering operation, acquiring a playing progress of the first multimedia data; acquiring second multimedia data corresponding to the first multimedia data, wherein when the first multimedia data is audio data, the second multimedia data is video data, and when the first multimedia data is video data, the second multimedia data is audio data; and switching acurrently displayed interface to a second playing interface for playing the second multimedia data from the first playing interface, and in the second playing interface, playing the second multimediadata according to the playing progress. According to the embodiment of the invention, seamless switching of the first multimedia data and the second multimedia data can be implemented, network traffic is saved, and user experience is improved.

The invention provides a method, a system and a device for realizing an audio and video conference. A speaker terminal strikes a time stamp for an audio and a video and marks the same time stamp in a text which is synchronous with the audio; and video frame sequence codes of corresponding video characteristic information are marked and then the codes are packaged to be sent to a participant terminal. The participant terminal decodes a data packet, and the audio and the video are played according to the time stamp of the audio and the video; the text is read according to a time stamp sequence of the text and the video frame sequence codes of the read text are compared with a sequence code of the played video; if the video frame sequence codes and the sequence code of the played video are the same, the sequence codes are embedded into the video to be displayed; if the video frame sequence codes and the sequence code of the played video are different, a subsequent video frame is continually read until the sequence codes of the read subsequent video frame are the same; or the subsequent text is read until the played video sequence codes and the sequence codes of the read subsequent text are the same; and the text is embedded into the video to be displayed. According to the method, the system and the device for realizing the audio and video conference, during a video conference, the audio and the corresponding text which is embedded into the video are synchronously played in a simple and short-time manner.

The invention discloses a method for synchronous live broadcast of multiple groups of cameras. A plurality of digital high-definition cameras are installed at a sports field according to different angles and regions; simultaneous live broadcast of the same match is realized through the plurality of digital high-definition cameras; during acquisition of videos of the plurality of digital high-definition cameras, current timestamps are automatically added; and a directed broadcasting tool receives multichannel video information, automatically adjusts the size of a buffer region according to thetimestamps, and selects an appropriate time-delay duration to play the videos. The playing times of multichannel videos can maintain synchronous, and the smoothness of video playing and the consistence of images are improved.

The invention discloses a screen projection method, a computer end and a mobile terminal. The screen projection method comprises the steps of selecting the mobile terminal for screen projection, and setting up communication connection with the mobile terminal; receiving audio and video data sent by the mobile terminal; processing the audio and video data and playing the audio and video data after processing. The computer end can play the audio and video data of the mobile terminal synchronously.

The invention discloses a method and device for keeping audio and video synchronization by using the speed conversion algorithm. The method includes the steps of judging the relation between audio time stamps and system time stamps, collecting audio data again, increasing or decreasing the audio data, and quickening or slowing down audio play. Therefore, synchronization of audio and video play can be achieved. The method and device are easy to implement and strong in practicality, effectively solve the problem of asynchronization in the audio and video play process, do not need to discard non-synchronous audio and video data, effectively improve the continuity and integrity of videos, and meet user needs.

The invention discloses a method for audio-video synchronous playing. The method comprises the following steps that: an audio-video file is opened; the accumulative time for playing the audio-video file is recorded; when a timer is interrupted, whether the deviation between the current accumulative time and the timestamp of the current frame in the audio-video file is within the time of one frame is judged; if the judgment is NO, the current frame of a video file is adjusted as an object frame; if the judgment is YES, the adjusted audio-video file is played. The invention also discloses a device for audio-video synchronous playing. The method judges whether the deviation between the current accumulative playing time and the timestamp in a file during each interrupt processing is within the time of one frame; if the deviation is of one frame ahead of schedule, the interrupt processing is exited; if the deviation is of one frame lagged behind, the frame is omitted to directly display the next frame; therefore, the audio-video deviation is always controlled within one frame to ensure synchronous audio-video playing.

The embodiment of the present invention discloses a cloud program directing station and a cutoff continued broadcasting method thereof. The method comprises the steps of during the multi-channel video receiving, splicing and playing process of a cloud program directing station, acquiring the standard playable frame rate of a currently playing video on the condition that the data reception of one video is interrupted; inserting a predetermined video frame at a frame rate the same with the above standard playable frame rate, splicing the above video with other videos and playing the videos; inserting a predetermined audio frame in synchronization with the video frame to maintain the audio playing process in the sound and picture synchronizing manner; on the condition that the data reception of the above video is restored, continuing the splicing and the playing of the above video and other videos according to received data. Based on the technical scheme of the invention, after the data reception of one video is interrupted, the playing of the above video is automatically restored and continued on the condition that the network transmission condition returns to normal. Therefore, the user experience is improved.

The embodiment of the invention provides an audio and video data processing method and system, and the method comprises the steps that an Ethernet terminal transmits audio and video data obtained in real time to a first serial queue; the Ethernet terminal encodes audio data in the audio and video data into an audio frame in a first audio format in a first serial queue, and encodes video data in the audio and video data, which has a synchronous relationship with the audio data, into a video frame in a first video format; the Ethernet terminal transmits the audio frames and the video frames to asecond serial queue; the Ethernet terminal synchronously sends the audio frames and the video frames in the second serial queue to an Ethernet server, the Ethernet server is used for pushing the received audio frames and video frames to an articulated naturality web terminal in real time, and the articulated naturality web terminal is used for synchronously analyzing and playing the received audio frames and video frames. According to the embodiment of the invention, the Ethernet terminal can carry out audio and video live broadcast on the articulated naturality web terminal through the articulated naturality web.

The invention discloses an audio playing method, a digital media controller and a digital audio media player. The digital audio media player comprises a first digital audio media player and at least one second digital audio media player. The audio playing method comprises the steps of detecting the audio playing time difference between the first digital audio media player and the at least one second digital audio media player, and controlling audio playing of the at least one second digital audio media player according to the audio playing time difference to enable the audio playing of the at least one second digital audio media player to be synchronous with audio playing of the first digital audio media player.

The invention provides a handheld mobile terminal capable of playing music and synchronously displaying a music score. The handheld mobile terminal comprises a central processing unit, a storage device, a display device, an input device and an output device, and further comprises an audio processor with a music score display function. A realization method comprises the following steps of: (1) matching audio tags; (2) downloading a song and a music score picture; and (3) performing synchronous playing, namely playing the song by using music software, simultaneously starting the music score picture for the synchronous playing, and displaying the music score picture on a display screen of the handheld mobile terminal. By the method, an externally played song to which a user is interested can be searched and downloaded at any time, and the lyrics and music score information of the song can be acquired, so that the music function of the handheld mobile terminal can be enhanced, and an amateur enthusiast for music can conveniently learn music related music score knowledge by utilizing the handheld mobile terminal.

The invention discloses a time synchronization method among wireless devices. The procedures of the method comprise: determining a wireless device as a time server in a wireless local area network, taking other wireless devices in the wireless local area network as time customers; sending first data packets comprising current first time points to the time server by the time customers, after the time server receives the first data packets, sending second data packets to the time customers by the time server, wherein the second data packets comprise first time points, second time points at which the time server receives the first data packets and third time points at which the time server sends the second data packets; when the time customers receive the second data packets, obtaining fourth time points at which the second data packets are received; calculating the time difference between the time customers and the time server by the time customers according to the time data. The invention also discloses a time synchronization system among wireless devices. According to the invention, the problem that the multiple wireless devices play non-synchronously is solved.

The embodiment of the invention provides a video generation and play method and device. The video generation method comprises: a server collects at least two live video streams, and identifiers are respectively distributed to each live video stream; each live video stream is integrated according to the identifiers, and an integrated live video stream is generated; a resource address is distributed for the integrated live video stream; and after a request of the source address is received, the corresponding integrated live video stream is fed back to the player. The video generation and play method and device are able to transmit multiply video streams while employing the integrated live video stream so as to allow the multiply live videos to realize play synchronization.

The invention relates to a method for synchronously storing and playing back fetal heart sound, heartbeat waveform and heart rate values. The storing method comprises the following steps of: acquiring fetal heart signals; dividing the signals into three paths, performing AD sampling on the first path to obtain heart sound signals, connecting the second path and an amplifier and then connecting a power amplification circuit, connecting the third path and an amplifying circuit and then dividing the third path into two paths, performing AD sampling on the first path of the third path to obtain heartbeat wave and a bar chart, and capturing, calculating and filtering the other path of the third path by a singlechip to obtain heart rate values after the other path of the third path is shaped by a comparator; and packing and storing the heart sound digital signals, the heartbeat waveform and the heart rate values as a fetal heart sound file. The playback method comprises the following steps of: reading the fetal heart sound file, extracting the heart rate value and heartbeat waveform data after unpacking, drawing the heartbeat waveform and the bar chart according to the waveform data, extracting the heart sound data at the same time and playing back the heart sound data after DA processing. The method can realize synchronous display, storage and playback of the fetal heart sound, the fetal heart rate, the heartbeat waveform and the bar chart, has more intuitive and clearer display, and can control the play of antenatal training music.

The invention discloses a video playing method, related equipment and a computer readable storage medium, and belongs to the technical field of multimedia. The method comprises the following steps: under the condition that a playing request sent by a client is received, obtaining identifier information corresponding to the client; based on the identifier information and a first association relationship, determining an equipment identifier set corresponding to a target user identifier, wherein the first association relationship is used for indicating a corresponding relationship between an user identifier and an equipment identifier, and the target user identifier is determined based on the identifier information; determining the latest playing progress of a target video based on the equipment identifier set; and sending indication information to the client, wherein the indication information is used for indicating the client to play the target video according to the latest playing progress. Through the mode, a post-replacement client can realize synchronous playing of the target video based on the latest playing progress.

The invention discloses a playing method, device and equipment and a storage medium, and belongs to the technical field of audio and video processing. The method comprises the following steps: displaying a first audio playing interface, wherein the first audio playing interface comprises playing information of an audio file being played and a variable-speed playing control; in response to a variable-speed playing operation triggered on the variable-speed playing control, determining a playing speed multiplication; in response to the interface switching operation, the first audio playing interface is switched to be displayed as a second audio playing interface, and the second audio playing interface displays playing information of an audio file which continues to be played according to the playing speed; continuously playing the playing information of the audio file according to the playing speed and the playing information of the video file synchronously played with the audio file; wherein the video file and the audio file are different files corresponding to the same song. The invention provides a variable-speed playing function. The variable-speed playing function can be seamlessly connected and used when songs are played and two scenes of song playing and video playing are switched.

The application discloses a method and device for synchronizing audio playback. In the application, the method comprises the following steps: at a preset time point, adjusting the playback sampling rate of the subsequent audio equipment and / or the first audio equipment according to the statistical result of the audio data playback status of subsequent audio equipment and the statistical result ofthe audio data playback status of first audio equipment; and if the audio data of the subsequent audio equipment and the first audio equipment are synchronously played after adjusting the playback sampling rate of the subsequent audio equipment and / or the first audio equipment according to the statistical result of the audio data playback status of the subsequent audio equipment and the statistical result of the audio data playback status of the first audio equipment, adjusting the playback sampling rate of the audio equipment with adjusted playback sampling rate in the subsequent audio equipment and the first audio equipment back to the playback sampling rate at the preset time point.

The instant invention provides a system and method of broadcasting audio and visual information to a plurality of audio reproduction devices and visual display devices utilizing a plurality of control computers linked thereto by a communications network. The invention employs a plurality of pre-recorded digital audio files and corresponding visual representation thereof to allow a user to construct message sequences for broadcast with a minimum of system input. Furthermore, a user may specify a plurality of broadcast zones to broadcast audio and visual messages.

The invention discloses a resource sharing method and device, a terminal, a server and a storage medium, and belongs to the technical field of the Internet. The method comprises the following steps: if a resource sharing operation based on a first media resource is detected, sending a sharing request to a server, responding to a sharing agreement request of a second terminal, obtaining the first media resource, and sending the first media resource and a playing timestamp at the current moment to the second terminal. According to the technical scheme provided by the embodiment of the invention,when the first terminal and the second terminal share the first media resource, the first terminal sends the first media resource to the second terminal, sharing of the media resource can be realizedthrough an end-to-end transmission mode, and when the media resource is the media resource with copyright, the copyright can be bypassed, so that the user experience is improved. The sharing of mediaresources with copyrights is realized, and the user experience is improved.

The invention relates to a synchronous and asynchronous playing player for LED and LCD display screens. The synchronous and asynchronous playing player comprises a processing unit, a signal switching module, a modulation module, a field-programmable gate array and a demodulation module. The synchronous and asynchronous playing player can provide image and sound playing functions for various brands of LED display screens and LCD light crystal display screens, thereby meeting the demand of using one player when the LED display screens and the LCD light crystal display screens are used together. The synchronous and asynchronous playing player has the function switching of synchronous playing and asynchronous playing, can synchronously play television programs and also can automatically switch asynchronous local playing image programs.

The invention discloses a Bluetooth-based interconnected sound box control method and device, and a storage medium, and the control method is realized through the control of a plurality of sound boxeslocated in the same local area network, and comprises the following steps: enabling a main sound box in the local area network to be connected with a mobile terminal in a Bluetooth communication mode; wherein the main sound box is any one sound box in a local area network; the main sound box acquires the Bluetooth control authority granted by the mobile terminal and shares the authority with other sound box nodes except the main sound box in a local area network; the main loudspeaker box receives a sharing control signal output by the mobile terminal, and shares the sharing control signal toall loudspeaker boxes or specified loudspeaker boxes in a local area network for audio playing and audio control; and the main sound box or any sound box except the main sound box in the local area network receives a voice signal, and transmits the voice signal to the mobile terminal through the main sound box for call feedback or voice control, so that the use convenience of a user is improved.

The invention discloses a digital television capable of synchronous sign language interpretation, which comprises: the split screen is connected with the audio signal interface of the digital TV body through the audio data line; the split screen also includes a storage module; the analysis module is used to receive the output of the digital TV body in real time The audio signal is compared with the audio material in the storage module to obtain the comparison result, and then in chronological order, the text materials and video clips corresponding to the comparison result are arranged in the video playlist in sequence with the digital TV body The TV program is played synchronously; the audio playing module is connected with the hearing aid earphone through wireless communication. The present invention synchronously plays audio materials, sign language videos and text materials through split screens for use by deaf people, and is equipped with hearing-aid earphones to listen to the split-screen synchronous audio without affecting the playback volume of the digital TV body. Watch the same TV program without interfering with each other.

The invention discloses an audio and video synchronization adjustment method and device, and the method comprises the steps that a recording end sends an audio stream sending end report (SR) and a video stream SR to a playing end, and the audio stream SR and the video stream SR both carry NTP time of a current system and a corresponding RTP timestamp; when the playing end receives a first audio stream SR and a first video stream SR of a current audio and video service from the recording end, according to NTP time carried by the audio stream SR and the video stream SR received this time, a current audio and video synchronization mode is determined, and the audio and video synchronization mode comprises an audio and video synchronization mode based on a timestamp and an audio and video synchronization mode based on a cache; and when the playing end receives the audio stream SR and the video stream SR of the current audio and video service again from the recording end, the current audio and video synchronization mode is determined according to the NTP time carried by the audio stream SR and the video stream SR received at this time and the NTP time of the audio stream SR and the videostream SR received at the last time. According to the invention, audio and video synchronization of the receiving end can be realized.

The invention discloses a portable digital radio based on synchronous sign language translation, comprising: a display screen connected to an audio signal interface of the digital radio body through an audio data line; the display screen also includes a storage module; an analysis module is used to receive the digital radio body in real time The output audio signal is compared with the audio material in the storage module to obtain the comparison result, and then in chronological order, the text materials and video clips corresponding to the comparison result are arranged in the video playlist and digital radio The radio program of the main body is played synchronously; the audio playing module is connected with the hearing aid earphone through wireless communication. The present invention synchronously plays audio materials, sign language videos and text materials through the display screen for deaf people, and is equipped with hearing-aid earphones to listen to the synchronous audio on the display screen without affecting the playback volume of the digital radio body. Listen to the same radio program without interfering with each other.