346results about How to "Improve playback quality" patented technology

Described herein are systems and methods for providing a message UI engine for accessing messages on a message system. The message system may comprise a message storage system (that store messages of varying types and formats, such as fax, text, voice / audio, video, and picture messages) and a message access system. The message UI engine is configured by a Flash media UI file for accessing messages and associated message information by interacting with the message access system. The Flash media UI file does not comprise any markup language and comprises only Flash® instructions. The Flash media UI file also comprises a plurality of embedded applications for presenting the plurality of different message types, each embedded application comprising only Flash instructions. The associated message information may be stored and transmitted in a non-markup language format, such as comma-delimited format. The messages and message information may be transmitted using a non-HTTP protocol.

Embodiments of the invention can manage the activity of accessories connected to a mobile computing device. A mobile computing device can be connected to any number of accessories through wireless or physical connections. Processing and resource limitations at the mobile computing device limit the number of accessories that can feasibly interoperate with the mobile computing device at any one time. In some embodiments, a threshold value is placed on the number of accessories with which a mobile computing device can interoperate at any one time. This threshold value can depend on the types of accessories, the application(s) executing on the mobile computing device, the processing power, whether media output resource are being used, etc. In response to a threshold number of accessories being connected, the mobile computing device can deactivate accessories.

One embodiment of the present invention sets forth a technique for adapting playback bit rate in a content delivery system based on scene complexity of the video content as well as network conditions and other performance factors. A scene complexity map of the video content indicates the complexity levels of different scenes within the video content. Using the scene complexity map, a content player may download scenes of lower scene complexity levels from video streams encoded to lower bit rates to manage the bandwidth consumed to download the video content and allow for the downloading of scenes of higher complexity levels from video streams encoded to higher bit rates.

The invention discloses a method, a client side and a system for self-adaptive playing of FLV (flash video) media streams. The method includes: downloading an FLV index file; when the condition that the current network bandwidth is unmatched with the bitrate of a played FLV media stream is monitored, determining a current key frame of an FLV media stream with the bitrate matched with the current network bandwidth according to the FLV index file; and downloading and playing the FLV media stream with the bitrate matched with the current network bandwidth from the current key frame. The method, the client side and the system have the advantages that by means of computing network access rate, the client side and the system can be automatically switched to the bit stream matched with the bandwidth according to the available bandwidth after the FLV media streams are played, and accordingly network bandwidth influence is weakened, the bandwidth is used more effectively, watching fluency of users is guaranteed more effectively, and playing quality of streaming media is improved.

An audio / video system (A / V system) for motor vehicles includes a ring local area network, a plurality of assorted audio / video appliances (A / V appliances), one or more output units, a control unit, and at least one operating unit. The A / V appliances transmit information about their available audio / video presentations to the control unit via the network. The available A / V presentations are displayed on a display independently of the appliances and divided into classes. The result of this is an appliance-independent user interface on the basis of which the user can select the presentations independently of the appliances. The user chooses a presentation such as a radio station independently of which frequency or which A / V appliance (analog radio receiver or DAB receiver) is used to receive it. The control software is of modular design.

A garment, such as a sports uniform, may provide visibility zones and / or flicker zones to enhance the ability of teammates to perceive the wearer. Different zones on a garment may have different sets of visual properties that may contrast with one another and / or a visual background. A denier differential between layers of a garment may facilitate moisture transport across the layers of the garment. Flicker zones may be discrete from or combined with visibility zones. One or more zones of a garment may also be substantially non-reflective at wavelengths associated with the visual background encountered while wearing the garment.

According to example configurations herein, a downstream video processor operates in conjunction with an existing consumer-operated tuner system. The downstream video processor system can be an add-on system disposed in a communication link between the consumer-operated tuner system and a remote video playback device such as a hi-definition television. In lieu of processing video data locally in the set-top box, the consumer-operated tuner system can transmit the video data to the downstream video processor for processing. The downstream video processor in the communication link can be configured to provide enhanced video processing services (e.g., better resolution, higher frame rate rates, enhanced signal to noise ratio, enhanced color quality, 3-D graphics, etc.) with respect to video processing services supported by an upstream video decoder in the consumer-operated tuner system.

The invention discloses a dynamic adaptive code rate selection method based on a MPEG-DASH (MPEG-Dynamic Adaptive Streaming over HTTP) protocol. The dynamic adaptive code rate selection method comprises the steps of: firstly, establishing a HTTP connection between a server and a client; by the client, sending a HTTP Get request to the server, requesting to download a MPD file and storing the MPD file; after the server receives the request of the client, by the server, responding to the client and sending the MPD file, and by the client, downloading the MPD file and parsing the downloaded MPD file; according to an URL address obtained by parsing the MPD file, firstly downloading one part of a slice at the minimum code rate, placing the slice into a cache region, carrying out calculation, statistics and recording on a network bandwidth when the video slice is downloaded, and predicting a network bandwidth when a next video slice is downloaded; and by combining a current residue condition of video slices of the cache region, selecting a code rate for downloading the next video slice until the end. An effect of improving video quality to the greatest extent in the premise of smoothly carrying out playing is achieved, and viewing experience of a user is greatly enhanced.

The present invention provides a method for continuation of multimedia playback, comprising receiving a radio broadcast comprising audio and / or video content at a first mobile electronic device, playing back said content, accessing a data connection, searching for a source of said content provided via said data connection, and stopping playback of said content from said radio broadcast and starting playback of said content from said source if at least one source is found. The switching to another content source can also be performed in the opposite direction. The invention also provides devices for performing the multimedia playback continuation method.

One embodiment of the present invention sets forth a technique for adapting playback bit rate in a content delivery system based on scene complexity of the video content as well as network conditions and other performance factors. A scene complexity map of the video content indicates the complexity levels of different scenes within the video content. Using the scene complexity map, a content player may download scenes of lower scene complexity levels from video streams encoded to lower bit rates to manage the bandwidth consumed to download the video content and allow for the downloading of scenes of higher complexity levels from video streams encoded to higher bit rates.

A method for constructing a network topology is applied in a streaming delivery system. The streaming delivery system includes: a center server (CS-P), an edge server (ES-P), a request scheduling server (RRS-P), and a client. The disclosed embodiments utilizes the upload capabilities of the client to transmit a part of streaming data, thus consuming fewer center server resources. By constructing the network topology, the disclosed embodiments enable the client to obtain a part of streaming data from other clients, reduces the load capability requirements for the server, and ensures that a streaming delivery network may provide streaming live services with higher bandwidths and better quality.

The invention provides an advertisement playing method, a user terminal and an application server. The method comprises: the user terminal receives advertisement information transmitted by a network side; the user terminal judges whether an advertisement file corresponding to the advertisement information is stored locally; the user terminal transmits the stored information to the network side and simultaneously plays the advertisement file locally if the advertisement file is stored locally; and the user terminal transmits information which is not stored to the network side and requests the network side to play the advertisement file if the advertisement file is not stored locally. The embodiment of the invention provides the novel advertisement playing method, changes the prior mode of playing advertisements through the network side completely into the mode of cooperatively playing the advertisements after the terminal and the network side are interactive with each other, lightens the playing burden of the network side, improves the advertisement playing efficiency and quality, and makes users have better experience.

The invention discloses a video-monitor-based scenic spot diversion method, server and system. The method comprises enabling a server to collect the image data information of a scenic spot in real time or at set time intervals through an image collecting terminal; according to the image data information, determining whether the scenic spot is crowded; according to the crowding status of the scenic spot, marking the scenic spot and transmitting the scenic to a client. According to the video-monitor-based scenic spot diversion method, by collecting the image data of the scenic spot to calculate the number of people in the scenic spot and further to determine the crowding status of the scenic spot, tourists can select appropriate touring routes in advance, thereby greatly saving time and physical energy and enhancing the touring quality.

The invention discloses a self-adapting multimedia stream control method in a sensor network, which belongs to the field of communication networks of computers. The method comprises the following steps: a data link layer dynamically monitors an interface array according to the characteristics of the multimedia coded video sequence and informs an application layer in time; when the quality of a radio link gets poor, and the communication congestion occurs or probably occurs, the application layer starts an active video frame discarding policy, and a transmitting node actively discards part of low priority video frame data which are less important to the playing quality of a receiver so as to reduce a communication load and increase the successful transmitting probability of a high priorityvideo frame; and when the communication is normal, the transmitting node normally transmits the video frame. The invention can improve the playing quality of a video stream at the receiver, reduce theenergy consumption of the node and improve the performance for transmitting multimedia data in real time by the wireless sensor network.

The invention discloses a method for transmitting and receiving streaming media data, a device and a system thereof. The method comprises the following steps: the hierarchically coded hierarchical coding data is dispersed into data segments according unit time length to be coded and transmitted in a way that hierarchical coding is carried out on the streaming media data in a streaming media server; a streaming media receiving node selects the received hierarchical data, wherein, the selected data segments corresponding to hierarchy received from the streaming media server, or the selected data segments corresponding to hierarchy received from other streaming media receiving nodes are combined according to the number of data segments, the hierarchy, and a sequence of playing time of the streaming media data, and the hierarchical coding data obtained by combination is decoded and played. Therefore, the streaming media receiving node can selectively receive different hierarchical data according to self capacity and / or network status of the node, and improve the playing quality of the streaming media by further acquiring data of an enhanced layer, on the premise that basic layer data is acquired to ensure the acquisition of basic playing quality.

The embodiment of the invention provides an audio and video synchronizing method and an electronic device and relates to electronic information technical field. The method may decrease video jitter generated when a video is played and improve video playing quality. The method comprises: acquiring the time stamp of audio data, played by an audio playing module, of media content and the time of a system clock; further acquiring a difference value between the time stamp of the audio data and the time of the system clock; comparing the difference value with a preset time threshold value; determining whether to synchronize the time of the system clock with the time stamp of the audio data according a compared result; acquiring video data corresponding to the time of the system clock according to synchronized time of the system clock if the time of the system clock is synchronized with the time stamp of the audio data; and using a video playing module to continue to play the media content from the video data corresponding to the time after the time of the system clock is synchronized. The method is suitable for synchronizing audio data with video data of the media content.

A network bandwidth detecting method for implementing stream medium service includes such steps as requesting the stream medium program by user, transmitting bandwidth test message including the current and random non-compression data from the stream medium server to user player, feeding the response message from user player back to said server, calculating network bandwidth, playing the stream medium program while repeating said steps several times, and calculating the average network bandwidth. Its advantage is high stream medium reproducing quality.

A handheld electronic, a sound produce system and control method of sound producing thereof are provided. The sound produce system includes a speaker, a feedback unit, a gain unit and a compensation unit. The speaker generates audible sound according to an output audio signal. The feedback unit generates a first detected parameter, wherein the first detected parameter represents a detected excursion. The gain unit receives an input audio signal, and amplifies the input audio signal to generate a gained audio signal according to a gain value. The compensation unit receives the gained audio signal and the first detected parameter, and predicts an excursion of the speaker corresponding to the gained audio signal to generate a predicted excursion parameter, and compensates the gained audio signal to generate the output audio signal according to the first detected parameter and the predicted excursion parameter.

The invention discloses a playing method of multimedia data and a device, and belongs to the field of the internet. The method comprises calling a local-end hardware video decoder interface based on a multimedia file to initialize a local-end hardware video decoder, performing container format analyses on multimedia data aiming at each frame of the multimedia data in the multimedia file to obtain a frame of video code stream, performing decoding on the video code stream through the hardware video decoder to obtain decoded video data if the hardware video decoder is successfully initialized, performing the decoding on the video code stream through an audio decoding module contained in a multimedia player to obtain decoded audio data, and performing playing of the multimedia data based on the decoded vide data and the decoded audio data. A computing resource of a CPU can be saved, local-end power consumption when the multimedia data is played is reduced then, and playing quality of the multimedia data is improved.

The invention provides a video document automatic convert system, comprising a source document input file, an automatic coding convert engine, and an output file, wherein the engine comprises a pre-converter for converting the source video documents in different formats in the source document input file into the video documents in uniform formats, a video convert list which contains all video converters for starting the video converters one-by-one, and a plurality of video converters for converting the video of pre-converted video documents to generate the video documents in various formats. The invention provides a method for using the system to process video conversion, comprising that first converting the source video document into uniform code format, and using a plurality of video converts to obtain the documents in kinds of video formats. The invention can meet the demand of different mobile terminals on video format and play condition.

The invention discloses UDP (User Datagram Protocol)-based data stream sending-receiving method and device, relating to the technical field of multi-media network communication and aiming to solve the problem that since UDP packet is larger, a packet is easy to lose during network transmission after an IP layer is segmented in the prior art. The UDP-based data stream sending method comprises the steps of: segmenting multi-media data into data segments not larger than a preset value; packaging the data segments in a UDP sub-packet; and sending a UDP packet carrying the UDP sub-packet. The invention can be adopted to reduce the probability of UDP packet loss during IP layer data transmission and can improve the timeliness of data stream.

Methods for using communication network statistics in the operation of a real-time communication system are disclosed. Embodiments of the invention may provide improved playback of real-time media streams by incorporating into the algorithms used for playback of the media stream network statistics typically calculated by some transport protocols.An additional aspect of the present invention may include machine-readable storage having stored thereon a computer program having a plurality of code sections executable by a machine for causing the machine to perform the foregoing.

The system comprises: source servers, node server, supper node (SP), client side and proxy server. The invention is used for managing all source server and supper node, dynamically allocating the SP resources to the stream media programs according to the actual connection state of the stream media program and the network resource state of SP, and informing the program information and SP resource to the node server and its corresponding SP. The method comprises: a) getting the actual connection state of each currently-used SP resource and the stream media program; b) according to the actual connection state of the SP resource and stream media program, configuring the SP resource for the dedicated stream media program, and using the configured SP resources to provide service for the dedicated stream media.

The invention discloses a method for synchronizing video frames and audio frames in an audio / video player system. The method includes steps of: (a) reading a predetermined audio playing time of a audio frame and retrieving an actual audio playing time of the audio frame; (b) calculating a synchronization offset time according to the predetermined audio playing time and the actual audio playing time of the audio frame; (c) calculating an adjusted video playing time for a video frame according to the synchronization offset time, a predetermined video playing time of the video frame, and a predefined video rendering offset time; and (d) selectively playing video frames according to the adjusted video playing time and current time. Accordingly, the video frames and the audio frames can both be synchronized at the same time.

The invention provides a video quality processing method, a storage medium and a terminal, so as to solve the problem that the video quality enhancement effect in the prior art is poorer. The method comprises the following steps: constructing a training sample of a video frame; training a convolutional neural network model based on the training sample, and acquiring a video quality enhancement model, wherein the convolutional neural network model comprises a first convolutional layer set, a residual module set, a first pixel rearrangement module or a first deconvolution module, a second convolutional layer set, and a second pixel rearrangement module or a second deconvolution module, and a third convolutional layer set which are sequentially arranged; and acquiring a video frame to be enhanced in quality and inputting the video frame into the video quality enhancement model to obtain a quality-enhanced video frame. According to the video quality processing method provided by the embodiment of the invention, a better video quality enhancement effect can be achieved.

The invention provides an electronic device for playing audio files. The electronic device is configured with an Android system. The electronic device comprises a receiving unit, a detection unit, a judgment unit, an audio decoding unit and a playing control unit; the detection unit acquires the sampling rate and sampling precision of audio streams which are requested to be played and received by the receiving unit; when the judgment unit determines that the sampling rate and sampling precision are not preset sampling rate and sampling precision, the audio decoding unit decodes the audio streams and adjusts decoded information to decoded information which accords with a preset transmission format; and the playing control unit plays the audio streams according to the adjusted decoded information and a first playing mode. The invention also provides a method for playing the audio files. With the electronic equipment and method for playing the audio files of the invention adopted, when playing audio files with different preset sampling rates, the electronic device can render a realistic effect, and therefore, audio file playing quality of Android equipment can be improved.

The embodiment of the present invention discloses an elimination method and device of an audio beginning sonic boom, wherein the method comprises the steps of detecting an audio frame within a beginning set time quantum in a time domain to obtain a sonic boom position area; carrying out the sonic boom elimination on the audio frame in the sonic boom position area. According o the technical scheme of the embodiment of the present invention, the playing quality of the audio data can be improved, and a processing function of a server system is enhanced.

The invention discloses a video playing control method. The method comprises the following steps: when a playing device plays a video, obtaining information of an image mode correspondingly carried bythe video; parsing the information to obtain the image mode of the video; and controlling the playing device to switch to the image mode to play the video. The invention further discloses a playing device and a storage medium. By adoption of the video playing control method disclosed by the invention, the problem that as the majority of the existing image modes are the comprehensive balance of various playing scenes, the optimal image parameter cannot be adopted for the current playing scene is effectively solved, so that the TV video playing image quality can be effectively improved.

The embodiment of the invention provides a media data transmission method and equipment. The method comprises the steps of controlling media source equipment to establish connection with media presentation equipment on a first frequency band when media data suitable for being transmitted on the first frequency band exists and carrying out transmission of the media data based on the established connection, so that the transmission performance of the media data can be guaranteed and power consumption can be lowered.