35results about How to "Guaranteed viewing quality" patented technology

The invention relates to a video transmission method for a web camera. The video transmission method for the web camera comprises the steps as follows: 1) the web camera establishes connection with a client program through the Internet; 2) a client generates control information according to current manual or automatic operation and transmits the web camera; 3) the web camera processes pictures collected by a sensor according to the received instruction; 4) the web camera performs video streaming coding to a processed image sequence; 5) the web camera embeds the play information based by processing the video streaming in the video streaming and transmits to the client, or transmits to the client with an individual data format via a networking protocol; 6) the client decodes and displays according to the received video streaming and play information; 7) the second step to the sixth step is repeated while the play information of the client is changed. The method of the invention solves the problem of providing the high-quality, high-fluency and high-definition video to a user when the bandwidth is not enough.

The invention discloses an apparatus and method for adjusting a display interface, and a terminal. A watching angle parameter of a user watching a display interface of a display screen currently is obtained by a camera and is used as a current angle parameter; according to the current angle parameter and a pre-determined optimal angle parameter, an adjusting strategy for the display angle of the display interface is determined; and on the basis of the adjusting strategy, the display angle of the display interface is adjusted, so that the adjusted display angle matches a current watching angle of the user. According to the adjusting method and apparatus, the adjusting apparatus adjusts the display angle of the display interface at the display screen automatically based on the preset optimal angle parameter and the current angle parameter obtained by the camera, so that the display angle of the display interface can adapt to the current watching angle of the user automatically. Therefore, the user can watch the display interface at an optimal watching visual angle all the time; and thus the hand-operated adjusting process of the use is reduced and the watching quality of the user is guaranteed.

The invention discloses an image inhomogeneous mapping method based on grid deformation optimization and belongs to the field of image processing. According to the image inhomogeneous mapping method based on grid deformation optimization, a fast image scaling technology based on content sensing and suitable for different user terminals is provided, images with fixed sizes can be displayed on different types of terminal equipment in a self-adaptive mode, important contents in an original image can be kept as much as possible, key objects are kept distortionless, and the import structure, namely the spatial position relation, in the image is kept unchanged so that optimal image observing quality can be guaranteed. According to the image inhomogeneous mapping method based on grid deformation optimization, a content-based image scaling optimal model is established by defining a series of energy functions capable of effectively controlling grid deformation, deformation of obvious key areas is avoided during image scaling, and in this way, user experience of browsing images on mobile digital equipment is improved; the quality of a scaling result can be effectively improved, and tensile deformation of the edges of the key areas can be avoided to a certain degree.

The invention provides a network video image processing method and device. The network video image processing method includes the steps that S1, a server encodes one or more images in a video program; S2, the server receives and responds to a playing request for the video program of a playing terminal, wherein the S2 includes the following steps that S100, the server receives the playing request of the playing terminal, and the playing terminal designates a viewing image Sa or the server designates the viewing image Sa; S200, the server selects one or more coding code streams related to the image Sa from the coding code streams; S300, interaction behaviors of users are collected to form playing behavior information PA, and the playing behavior information PA is fed back to the server; S400, if the playing behavior information PA is received, a viewing image range UV or a viewing object UO is obtained through the playing behavior information PA; S500, if the viewing image range UV or the viewing object UO is obtained, an image Sb is obtained on the basis of the UV or the UO; if the video program does not contain the image Sb, the video program is made to contain the image Sb; then the Sa is made to be equal to Sb, and the step S200 is returned.

The invention discloses a video source determination method comprising the steps of when the condition that a first video source of a currently playing video is in an abnormal state is monitored, recording a time length of the first video source in the abnormal state, and determining a first time length; judging whether the time length of the first video source in the abnormal state is more than the first time length; when the time length of the abnormal state is more than the first time length, determining a second video source based on a preset changing strategy; and playing the currently playing video based on the second video source. The embodiment of the invention provides a video source determination device and a computer readable storage medium.

The invention relates to a multi-view video code transmission method based on peer-to-peer overlay network cooperation, belonging to multi-media data transmission technical field. A server enables the users which watch the same view to make up an inside-view overlay network; all the inside-view overlay networks together make up an inter-view overlay network; the key frame data in a multi-view video program is evenly divided into a plurality of key frame data slices which are respectively transmitted to audiences who watch different views; all the audiences exchange the key frame slices with each other. The method for detecting the overall condition of bandwidth resource of the audiences at all the views increases the amount of multi-view video program data transmitted by views with rich bandwidth resource by changing the range for the user to respond to the data request in the transmission process. The method has the advantages that the method ensures the quality of the video and the expansibility of the server to provide multi-view video service; the method realizes overall optimized allocation and effective use of the user bandwidth source and solves the problem of heterogeneity of the view sources in multi-view video stream media service.

This invention relates to a media server and method for realizing media route thereof, which contains coding unit, decoding unit, code stream conversion unit, main control unit, network management control unit, IP network unit, hard disc storage unit, DVD-ROM driving unit, DVD-S/DVB-C/DVB-T receiving unit, and multicomplexing unit, which features 1, converting various audio-video data stored in different medium into TS stream adapted to digital television broadcast, then outputting through ASI or IP network, to effectively utilize various kind of media data and realize digital broadcast in minimum image loss, 2, converting the real time program received by DVD-S/DVB-C/DVB-T receiving unit through media route, playing more than two times program in one channel after multiplexing.

The embodiment of the invention discloses a data transmission method and device, electronic equipment and a storage medium. The method comprises the steps that audio and video coding data to be transmitted are acquired, the audio and video coding data to be transmitted comprise M video frame layers and audio frame layers, each video frame layer and each audio frame layer have corresponding level serial numbers, the video frame layer with the high level serial number depends on the video frame layer with the low level serial number to conduct decoding, the level sequence number of the audio frame layer is lower than the level sequence number of any video frame layer; a current network state of the target network is obtained; a target frame layer corresponding to the current network state is determined, wherein the target frame layer comprises an audio frame layer and N video frame layers of which the level serial numbers are arranged step by step from the lowest level to the higher level; and the data corresponding to the target frame layer is sent to the target terminal through the target network. According to the method, the condition of network congestion can be relieved while normal decoding and video watching image quality of the target terminal are ensured, so that the abnormal condition of video playing of the target terminal is relieved.

The embodiment of the invention provides a switching method and device of a network access mode. The method comprises the following steps: in case of according with a preset switching condition, determining a first access mode and network parameters of a current access network; calculating a first power consumption of the first access mode according to the network parameters; calculating a secondpower consumption of a second access mode according to the network parameters; comparing the first power consumption with the second power consumption; and when the first power consumption is higher than the second power consumption, accessing the network according to the second access mode corresponding to the second power consumption. According to comparison of the power consumptions of different access modes under a condition of identical network parameters, an optimal access mode is selected to access the network, thereby guaranteeing no influence caused on a message source and guaranteeing the watching quality; and meanwhile, the power consumption can be reduced; a set top box powered by a battery is particularly sensitive to the power consumption as a relatively low power consumptioncan prolong the service life of the set top box.

A encoding and decoding machine for the Internet TV, including: a encoder that is used to code the TV signal as the H.264AVI signal, and transforms the H.264AVI signal to the ASF signal that is fit for transmission by the IP flow; a decoder that is used to receive the ASF signal by the IP flow and decode the H.264AVI signal, and also transform the decoding signal to the media signal that is fit for display on the TV.

The invention discloses a seamless type data transmission system and method of a digital television network and a mobile communication network. The system receives digital television signals from the digital television system and detects the decoding error rate of the digital television signals at a first frequency. When the values of the decoding error rate detected at the first frequency are continuously larger than a first threshold value, the decoding error rate of the digital television signals is detected at a second frequency and the average signal intensity of the mobile communication network is detected. When the values of the decoding error rate detected at the second frequency are continuously larger than a second threshold value and the average signal intensity is continuously larger than a third threshold value, the network connection of the seamless type data transmission system and a multimedia server is built through the mobile communication network, and multimedia data are received by the multimedia server. The invention further provides a seamless type data transmission method of the digital television network and the mobile communication network.