292 results about "Multimedia data streams" patented technology

A networking protocol includes definitions of quality of service enhancements to provide reliable multimedia data stream connections in wireless computer networks. These enhancements may be implemented as extensions to packet headers, such as a multimedia control field made up of various sub fields.

The present invention introduces a congestion control mechanism for constant bit rate (CBR) multimedia data flows in cable operator IP networks. A flow drop method within a congestion control unit of the present invention chooses a subset of multimedia data flows to drop, in whole, to alleviate a congestion condition. After the congestion condition is detected and the congestion control unit begins dropping multimedia data flows, the remaining multimedia data flows are no longer degraded for the end user, as compared to conventional congestion management systems.

A dynamic and synchronized real-time captioning system and method for streaming media. A streaming encoder module can provide a code injection to marry textual data and audio / video (AV) data in order to form a text and / or audio stream. A streaming control module can allow an end-user to specify font format utilized to embed into an AV stream. A delay enhancement tool can be adapted to adjust speed of the text and / or audio stream, which allows the end-user to receive the text and / or audio stream at a proper speed. A customized graphical user interface (CGUI) can be adapted to assist with streaming administration to provide an encoding option, caption source location, delay control and slide control. Therefore, the captioning system can be able to synchronize and deliver the textual data and the AV data for live media streaming at an end-user's system.

An improved system and method for playing multiple media streams is disclosed. Unlike traditional sequential streaming methods where the source outputs media streams in a fixed sequential relationship, the improved system may play a media stream at any time during another media stream. In addition, a float layer on the media stream permits a user to activate (e.g., by clicking a mouse) events such as a popup window containing a website, another media, an advertisement and the like.

A multimedia data storing and transmitting method and a device using the method may improve flexibility and accuracy of reproduction of a multimedia data stream in a reception terminal, when a multimedia data storage device transmits the multimedia data stream. The multimedia data storing and transmitting method includes the steps of making a set of moving picture data, sound data, and multiplexed information of the moving picture data and the sound data into a packet, distinguishing a data packet of themoving picture data, the sound data, and the multiplexed information from a header packet of the moving picture data, the sound data, and the multiplexed information, storing the distinguished data packet and header packet, and transmitting the stored data packet following the stored header packet.

The invention provides a system and method for automatically indexing and retrieving multimedia content. The method may include separating a multimedia data stream into audio, visual and text components, segmenting the audio, visual and text components based on semantic differences, identifying at least one target speaker using the audio and visual components, identifying a topic of the multimedia event using the segmented text and topic category models, generating a summary of the multimedia event based on the audio, visual and text components, the identified topic and the identified target speaker, and generating a multimedia description of the multimedia event based on the identified target speaker, the identified topic, and the generated summary.

A method and an apparatus adaptively and dynamically deliver multimedia content based on continuously monitored network conditions. Given the temporal relationships among the multimedia items in the multimedia data stream and also the current network condition, the method and apparatus compute a transmission schedule such that the transmission delay and the burstyness of the network bandwidth utilization are minimized, while maintaining the integrity of the multimedia presentation.

An apparatus and a method for multimedia data handling to a web or cloud-computing service are disclosed. A set-top box can generate a pre-encoded stream of digitized data after receiving a raw incoming multimedia signal or after receiving a pre-processed, decoded, decompressed, and / or decrypted incoming multimedia signal from a service provider-specific signal receiver. The set-top box can also generate streams of encoded multimedia data from the pre-encoded stream of digitized data and segmentize the streams of encoded multimedia data into individually-viewable segments for uploading to the web or cloud-computing service, wherein a size of each segment varies based on a current connection bandwidth availability and / or a workload on the set-top box. By automatically segmentizing the streams of encoded multimedia data into individually-viewable segments for the web or cloud-computing service, a user can start viewing the currently-uploading multimedia data faster than a conventional single stream upload.

A method and corresponding equipment (11) for encoding different types of objects of a multimedia data stream so as to provide improved overall quality (Q), according to relationships (11b) between quality (Qi) and encoding size / transmission rate (Ri) for each object, and according to penalties (11c) for removing objects from the multimedia data stream. A multimedia data stream is provided in which the quality of the different objects tends to be similar according to rules provided by the invention for assigning a value of quality to each of the different kinds of objects of the multimedia stream.

The present invention relates to methods for editing timed and annotated data, the method comprising the steps of acquiring a multimedia data stream, segmenting the multimedia stream into respective audio / video audio data streams, wherein the playback times of the audio / video data streams are synchronized. Playback time annotation indicators are associated with the time synchronized audio / video data streams, wherein discrete playback time annotation indicators of the video data stream segments correlate with discrete playback time annotation indicators of the audio data stream segments, and a transcript of the audio data stream is created. The method further comprises the steps of associating the discrete playback time annotation indicators of the audio data stream words, or phrases that are reproduced within the audio data stream with respective corresponding textual representations of the words, or phrases that are comprised within the transcript, editing the transcript, and outputting the transcript in a predetermined data format.

A system and a method allowing simultaneous exchange of audio, video or data information between a plurality of units over a communication network, supported by a central unit, wherein the central unit is, based on knowledge regarding one or more of the units, adapted to instruct said one or more units to generate multimedia data streams adjusted to fit into certain restrictions to be presented on other units participating in a same session.

A system and method is disclosed for indexing and summarizing music videos. A music video summary controller in a video playback device receives a multimedia data stream that contains a plurality of music videos. The music video summary controller (1) segments and identifies the music videos, and (2) creates a music video summary file for each music video. The music video summary file contains information such as title of the song and the name of the artist. The music video summary file also contains an identifying audio segment and video segment of the song. A user can access a list of the music video summary files and select which music video to play on the video playback device by selecting its corresponding music video summary file.

This invention relates to a method and system of transmitting video data and data to a plurality of client radio receivers over an air interface using an adaptive encoding / transcoding scheme and updating the adaptive encoding / transcoding scheme in dependence upon received feedback data. The invention further describes estimating channel states and distortion levels for a plurality of transmission modes, then selecting that transmission mode for subsequent data transmission that has the lowest distortion level. Control data items can be extracted from the first data stream to produce a multimedia data stream and a control data stream and the multimedia data stream is transmitted over a first channel; the control data stream is transmitted over a second channel. The received data stream may be put into a plurality of multimedia slices having a predetermined slice size; and encoded into first data packets of a first predetermined size; which are divided into respective integral second data packets of a second predetermined size and are aggregated into a stream of third data packets of a third predetermined size.

A mobile communication device includes infrastructure capable of processing streamed multimedia data in a single threaded operating environment. The infrastructure comprises a central processing unit (CPU), an operating system (OS), and a digital signal processor (DSP) operatively coupled to the CPU. A high level application is coupled to the CPU via a memory bus. The high level application is given direct access to the DSP. The high level application instructs the CPU to display a first downloaded image in a slide show format, and hand over audio processing of an associated first downloaded sound clip to the DSP. The CPU is free to immediately download a successive image and a successive associated sound clip, thereby creating the appearance of processing the multimedia data stream in a multithreaded mode.

Network-based content distribution is improved by controlling the flow of multimedia data and streaming characteristics to ensure real-time, consistent delivery. An adaptive media distribution system includes at least one original source of a media channel, a plurality of content playback devices, and one or more stream controllers disposed between the original sources and the playback devices. Each media channel provides audio and / or video content on one or more switchable streams, each stream being encoded with different characteristics such as bitrate. The stream controllers receive streams and determine how the streams should be allocated to the playback devices so as to provide consistent delivery of the content in accordance with playback demand and the stream attributes or information.

A method for archiving a collaboration session regarding visual content is disclosed. A collaboration session is established from a collaboration server with participant nodes. The visual content is transmitted to the participant nodes. A first multimedia data stream, an annotation data object associated with an annotation to the visual content in timed correlation to a first time reference within the first multimedia data stream, and view parameters are received. A first session record entry associated with the multimedia data stream, the annotation data object, and the view parameters is stored into a session record. The session record includes a plurality of session record entries including the first session record entry. The session record is retrievable by other participant nodes for playing back of the collaboration session in sequence with the session record entries. The first session record entry is transmitted to other participant nodes.

A multimedia data streaming system and a method thereof are disclosed. The multimedia data streaming system is used for transmitting multimedia data to a receiver by means of a streaming server through a dynamic streaming process. The multimedia data streaming system includes a converting module and a scheduler module. The scheduler module is used to obtain the bandwidth condition between the streaming server and the receiver dynamically, it can then request the converting module to convert the original data into streaming chunks with the optimal bit rates in accordance with the bandwidth condition detected; the streaming chunks can then be transmitted to the receiver by means of the streaming server.

The present invention relates to a reception device and a method for the processing of multimedia data flows in said device comprising an interface to a first network and an interface to a second network, said method comprising the following steps: receive, from the first network, a first flow comprising multimedia data through a first transport protocol fitted with a first data synchronization system; receive, from the second network, a second flow comprising multimedia data through a second transport protocol fitted with a second data synchronization system, said second synchronization system being based on timing references different from those of the first data synchronization system; characterized in that said first and second flows transport the same synchronization information in the payload field of the first and of the second transport protocol, said synchronization information comprising data indicating the moment from which said multimedia data must be rendered; synchronize said first and second flows by using said synchronization information; and perform a step for rendering said first and second multimedia flows.

A method for transmitting data in real time in a multimedia data stream over a local network is provided. The local network comprises a sending end and one or more receiving ends. The method includes the steps of packaging a QoS (quality of service) control signal into a QoS packet according to a RTCP / TCP / IP protocol; packaging the multimedia data stream into a multimedia data packet according to a RTP / UDP / IP protocol; establishing a connection between the sending end and one of the one or more receiving ends; delivering the QoS packet and the multimedia data packet from the sending end to the one or more receiving end over the local network; and the one or more receiving end de-packaging the QoS packet into the QoS signal to control the transmission of the multimedia data stream.

A method for automatically establishing a wireless connection between a receiving screen and a mobile wireless device to enable streaming of multimedia data is provided herein. The method comprises the steps of: (i) creating a dynamic image code which includes data enabling wireless connection that is associated with the target screen device; (ii) displaying said image code on the target screen device, until a connection with a mobile wireless device is established; (iii) capturing said dynamic image code by the mobile wireless device; (iv) decoding the dynamic code for retrieving the data enabling wireless connection that is associated with the target screen; and (v) establishing a wireless connection between a target screen device and a mobile wireless device for enabling data streaming by the mobile wireless device based on the retrieved enabling data wireless connection.

A multimedia time warping system allows a user to store selected multimedia data streams while the user is simultaneously watching or reviewing other multimedia data. Data streams are converted to digital streams for internal transfer and manipulation. A parser and event buffer decouple the CPU from having to parse the digital stream. Video segments are stored on a storage device and when data is requested for display, its video segments are extracted from the storage device and sent to a decoder that converts them into display output signals and delivers the display output signals to a display.

The invention discloses a method and a server for realizing network live broadcasting. The method comprises the following steps of: providing a stream push content distribution network (CDN) address and a key to a corresponding anchor user at an anchor page, thereby enabling the anchor user to upload a multimedia data stream to the CDN according to the steam push CDN address and the key, wherein different anchor pages are corresponding to different anchor users; showing related information of the multimedia data stream uploaded by each anchor user on a main page; when an audience user selects one multimedia data stream shown on the front-end main page, skipping to the anchor page corresponding to the multimedia data stream, and providing a stream drawing CDN address and a key of the multimedia data stream to the audience user on the anchor page, thereby enabling the audience user to acquire the multimedia data stream in real time from the CDN according to the stream drawing CDN address and the key. The technical scheme establishes a superior multimedia data stream transmission and presentation mode to realize network live broadcasting.

A method for playing a media source includes: extracting a reference subtitle stream from the media source, the reference subtitle stream being synchronized with a multimedia data stream of the media source; matching the reference subtitle stream to a substitute subtitle stream from a subtitle source for generating an output subtitle stream; and playing the multimedia data stream and the output subtitle stream synchronously.

Aspects of a method and system for redundancy-based decoding of video content in a wireless system are provided. A wireless receiver may determine whether a received multimedia data stream comprises video content and may select a redundancy-based decoder when video content is detected. The wireless receiver may be a WLAN receiver or a cellular receiver. Video content may be indicated by at least one flag in a preamble or a reserved field of the received multimedia data. The redundancy-based decoder may be a Viterbi decoder. The wireless receiver may enable a standard Viterbi decoder to decode portions of the multimedia data that do not comprise video content. The wireless receiver may generate at least one signal to select the redundancy-based decoder or the standard Viterbi decoder.

A method and system for a communication network architecture for passing multi-media data streams between two heterogeneous IP (Internet Protocol) networks, where the networks include a plurality of firewalls and NAT (Network Address Translation) devices. The architecture can include: (a) a session control server (b) a logger service to capture and to digitally store communication streams; (c) a network client service to initiate communication requests; (d) a network client service to receive communication requests; and (e) an administration service to control other network services and to monitor and log the communication quality and to generate communication traffic reports. The session control server can include: (f) a NAT device and firewall device traversal service; (g) a communication encryption service; (h) a bandwidth control service; (i) a quality monitoring service; (j) a proxy server ; (k) a registrar server; and any defined services in the architecture.

The embodiment of the invention provides a media control method and equipment based on desktop clouds and relates to the field of desktop cloud application. The media control method and equipment aim to reduce bandwidths occupied by multimedia dataflow transmission in the multimedia control process. The method comprises the steps that multimedia dataflow is acquired by a client and is shown, control instructions sent by a cloud server are received, and corresponding control operation is conducted on the shown multimedia dataflow according to the control instructions. The media control method and equipment are suitable for media control.

An apparatus and method for transmitting a multimedia data stream are provided. The apparatus includes a data source unit to output the data stream; a frame dividing unit to divide the data stream according to a type of a video frame included in the data stream and to output the divided data stream; a parameter control unit to select a parameter set for separate transmission control of the divided data stream using parameters for controlling a transmission layer; and a network interface unit to control transmission of the divided data stream using the parameter set. The method includes dividing the data stream according to a type of a video frame; selecting a parameter set for separate transmission control of the divided data stream; and controlling transmission of the divided data stream using the selected parameter set.