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323results about How to "Reduce Caton" patented technology

Audio data transmission method between double wireless earphones, and double wireless earphones

ActiveCN107333339ASave air bandwidthReduce the amount of data forwardingTime-division multiplexConnection managementData transmissionChannel data
The invention provides an audio data transmission method between double wireless earphones, and the double wireless earphones. The method comprises the following steps: a first wireless earphone performs data link with a wireless communication module of an audio player through a first wireless communication module to receive audio data; when the first wireless communication module receives first frame of audio data, the first wireless communication module inserts a playing starting time in an audio data packet; the audio data packet carrying the playing starting time is decoded and is divided into two paths of sound channel data, wherein one path of sound channel data outputs audio, and the other path of sound channel data is encoded; a second wireless communication module of the second wireless earphone receives the encoded audio data packet; the second wireless communication module of the second wireless earphone controls a playing starting time point according to the playing starting time in the encoded audio data packet. According to the audio data transmission method, the sound of the two earphones in wireless communication link reduces the blockage and generates no drift with time by means of wireless communication protocol extension and delay control.
Owner:BESTECHNIC SHANGHAI CO LTD

Fast broadcast starting method and apparatus of high-definition live video

The invention provides a fast broadcast starting method and apparatus of high-definition live video, and relates to the technical field of live video. The method comprises the following steps: receiving live video data from a live broadcast source in real time, performing parsing according to the currently received live video data, determining a live broadcast parameter of the live broadcast source, caching live broadcast cache data according to the live broadcast parameter and the currently received live video data, and quickly sending the live broadcast cache data to a live broadcast terminal, so that the live broadcast terminal can quickly start broadcasting the live broadcast cache data. The shortest cache time length of the live broadcast cache data needing to be cached at present iscalculated according to the live broadcast parameter and a predetermined algorithm, and the live broadcast cache data are automatically updated in real time according to the shortest cache time lengthand a complete GOP requirement. The live broadcast cache data with the shortest cache time length are met, and the phenomenon that the screen is blocked or the delay is too long after the broadcast is started is reduced; and furthermore, the live broadcast cache data are sent to the live broadcast terminal according to a fast sending speed, thereby improving the broadcast starting speed of the live broadcast terminal, and accordingly, the user placing experience is improved.
Owner:北京数码视讯软件技术发展有限公司

Data retransmission method and device, terminal equipment and storage medium

The invention discloses a data retransmission method, a data retransmission device, terminal equipment and a storage medium. The data retransmission method is applied to a receiving end, and comprisesthe steps of: receiving data packets transmitted by a transmitting end, wherein each data packet carries a serial number used for describing the uniqueness of the data packet, the serial numbers areconsecutive, and the receiving end and the transmitting end are based on an unreliable protocol; storing a missed serial number in a pre-retransmission cache region when detecting that the serial numbers of the acquired data packets are not consecutive, recording storage time of the missed serial number and calculating to-be-used time of the data packet corresponding to the missed serial number; and requesting for retransmission of the data packet of a target serial number to the transmission end or a third end storing the data packet corresponding to the missed serial number, wherein the target serial number comprises a serial number with the storage time reaching first preset time or the to-be-used time not longer than second preset time. The data retransmission method, the data retransmission device, the terminal equipment and the storage medium aim to solve the problem of data retransmission redundancy or influence on data usage in the existing data retransmission technology.
Owner:GUANGZHOU HUYA INFORMATION TECH CO LTD

Panoramic video transmission method, transmission device and transmission system

The invention provides a panoramic video transmission method, a transmission device and a transmission system, wherein the panoramic video transmission method is applied to a client and comprises thesteps of acquiring a media file from a server end and analyzing the file, and downloading video segments according to the media file; in a loading process, acquiring head position information of a user, and predicating viewing probability of the video segments according to the head position information; calculating the size of a video playing buffering area, and calculating a total code rate upperlimit of the video segments according to the estimated network bandwidth and the size of the video playing buffering area; calculating the spatial quality change of the video segments and the expected distortion of the video segments, establishing a QoE model according to the spatial quality change and the expected distortion of the video fragments, and selecting the to-be-downloaded video fragments. The panoramic video transmission method, the transmission device and the transmission system realize technical effects of reducing data volume in panoramic video transmission, improving video quality, reducing spatial quality fluctuation and lags in video playing.
Owner:PEKING UNIV

Embedded dynamic video playing control method and device based on network throughput

The invention discloses an embedded dynamic video playing control method and device based on a network throughput. The method comprises the following steps: obtaining the network throughput, an undownloaded data volume and a buffered video length of a current network video stream; calculating the capacity of a target buffer area according to the calculated expected downloading time and the network bandwidth; calculating a fast playing threshold value and a slow playing threshold value according to the standard buffer area capacity of the previous time frame, and determining the control time delay of video stream playing according to the target buffer area capacity and the fast playing threshold value and the slow playing threshold value; calculating a sliding mean value and a sliding relative adjacent difference according to the video stream with the sliding window throughput, and determining a switching code rate of video playing according to the sliding mean value, the sliding relative adjacent difference and the current network throughput; and playing the video stream according to the control time delay of video playing and the switching code rate. According to the invention, the playing purpose of minimizing video lagging and maximizing the video code rate can be considered, so that the video quality is further improved, and the user experience is improved.
Owner:SHENZHEN RES INST OF BIG DATA

Display equipment and scheduling method for Bluetooth communication resources of display equipment

The invention discloses a display device and a scheduling method for Bluetooth communication resources of the display device. The display device comprises a display, a controller and a Bluetooth module, the Bluetooth module is used for executing a corresponding processing task according to control of the controller, and the controller is configured to obtain the state of the Bluetooth module whenan operation request of an application for the Bluetooth module is received; if the Bluetooth module is in the working state, determining the priority of a target processing task corresponding to theoperation request and the priority of a current processing task of the Bluetooth module; judging whether the priority of the target processing task is higher than that of the current processing task or not; If the priority of the target processing task is higher than that of the current processing task, controlling the Bluetooth module to suspend execution of the current processing task, and executing the target processing task. Through application of the method and the device, resource preemption can be avoided, the success rate of equipment pairing and connection is improved, Bluetooth audiojamming is reduced, and reasonable scheduling and effective use of Bluetooth communication resources are realized.
Owner:HISENSE VISUAL TECH CO LTD

Data processing method and device, electronic equipment and computer readable storage medium

PendingCN112235234AReduce CatonReduces the risk of packets being received out of orderData switching networksData packEngineering
The invention provides a data processing method and device, electronic equipment and a computer readable storage medium, and the method comprises the steps: receiving a plurality of data packets transmitted by a transmitting end according to a UDP protocol, storing the data packets in a cache queue according to the sequence of receiving the data packets, obtaining a first data packet from the cache queue according to the sequence of first-in first-out, adding the first data packet into a sorting queue, judging the size relationship between the packet serial number of the first data packet anda first expected packet serial number, wherein the first expected packet serial number is the packet serial number of the data packet expected to be received by the receiving end at present, and whenthe packet serial number of the first data packet is the same as the first expected packet serial number, taking out the first data packet from the sorting queue, and carrying out preset processing onthe first data packet. By using the data processing method provided by the invention, the data packets arriving out of order can be sorted and sorted, and then preset processing is carried out, so avideo lag or blurred screen phenomenon is reduced.
Owner:VISIONVERA INFORMATION TECH CO LTD
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