33results about How to "Efficiently streamed" patented technology

A method for processing XML documents in a computer-based system includes associating each of a plurality of information items with a corresponding one of a plurality of binary-data units and providing a XML document associated with a XML information set comprising one or more of the plurality of information items. The method includes serializing the XML document into a binary XML format, or de-serializing the XML document from the binary XML format. Serializing includes translating the one or more information items of the XML information set into their corresponding one or more binary-data units. De-serializing includes translating one or more binary-data units of the binary XML format into their corresponding one or more information items. A computer readable medium is encoded with a program for execution on at least one processor. The program, when executed on the at least one processor, can perform the method for processing XML documents.

An optimized server for streamed applications provides a streamed application server optimized to provide efficient delivery of streamed applications to client systems across a computer network such as the Internet. The server persistently stores streamed application program sets that contain streamed application file pages. Client systems request streamed application file pages from the server using a unique set of numbers common among all servers that store the particular streamed application file pages. A license server offloads the streamed application server by performing client access privilege validations. Commonly accessed streamed application file pages are stored in a cache on the streamed application server which attempts to retrieve requested streamed application file pages from the cache before retrieving them from persistent storage. Requested streamed application file pages are compressed before being sent to a client as well as those stored in the cache.

A method and system for measuring a transmission bandwidth which includes: a server for transmitting packets of multimedia data to a receiving apparatus, receiving a time stamp from the receiving apparatus, calculating a transmission bandwidth in real time from the received time stamp, and streaming the multimedia data to the receiving apparatus in accordance with the calculated transmission bandwidth; with the receiving apparatus receiving packets of the multimedia data from the server, recording received time stamp for each of received packets, and transmitting the received time stamp to the server by a predetermined cycle. According to the present invention, transmission bandwidth is measured using data actually transmitted and that streaming of media is suited to a transmission bandwidth to meet QoS (Quality of Service) requirements.

Disclosed herein is a web-based videoconference system that allows for video avatars to navigate within the virtual environment. The system has a presented mode that allows for a presentation stream to be texture mapped to a presenter screen situated within the virtual environment. The relative left-right sound is adjusted to provide sense of an avatar's position in a virtual space. The sound is further adjusted based on the area where the avatar is located and where the virtual camera is located. Video stream quality is adjusted based on relative position in a virtual space. Three-dimensional modeling is available inside the virtual video conferencing environment.

Methods, systems and computer program code (software) products executable in a digital processor operable to simulate light transport in a scene by ray tracing (wherein the digital processor is operable to maintain an object list representing a list of objects associated with a boundary of the scene) include executing a ray tracing method that traces r rays through n objects by (1) partitioning the object list in a recursive manner to generate partitions and (2) culling away the partitions of objects from rays, without using an explicit auxiliary acceleration data structure.

The invention relates to encapsulating partitioned timed media data to be streamed to a client's device, the partitioned timed media data comprising timed samples, each comprising a plurality of subsamples. After having grouped several of the subsamples to form at least one group so that at least part of the subsamples belongs to a group of subsamples, at least two subsamples of the same group are selected from amongst the plurality of subsamples of one of the timed samples and at least one track comprising the selected subsamples is created. Next, for the at least one created track, one sub-track box is created for each of the subsamples selected to create the at least one track, at least one of the created sub-track boxes comprising definitions and properties that are common to the selected sub-samples. Each of the created tracks is independently encapsulated in at least one media file.

Disclosed is a method for efficiently distributing content by leveraging the use of a peer-to-peer network infrastructure. In a network of peers, a handful peers can receive content from centralized servers. These peers can then flood this content out to more clients who in turn can send the content along to others. Ultimately, a request for content can be fulfilled by locating the closest peer and obtaining the content from that peer. In one embodiment the method can be used to distribute content by creating content distribution groups of one or more client computing devices and redirecting requests for content from the server to the content distribution group. A further contemplated embodiment efficiently streams time sensitive data through the use of a spanning tree architecture of peer-to-peer clients. In yet another embodiment the present invention provides for more efficient use of bandwidth for shared residential broadband connections.

A method for pre-processing a vector image, including: receiving data for a vector image, the vector image data including a list of descriptions of global vector objects that can be rasterized for display at arbitrary levels of resolution; for each local region from among a plurality of local rectangular regions of the vector image, the local rectangular regions being associated with levels of resolution, determining local vector objects that correspond to intersections of global vector objects with such local region; and for each local region from among the plurality of local rectangular regions, storing descriptions of its local vector objects within a computer memory.

The invention relates to encapsulating scalable tiled timed media data comprising timed samples in a server and providing a timed media data bit-stream from encapsulated scalable tiled timed media in a client device. Each timed sample comprises a first layer and at least one second layer and at least one of the layers comprises a plurality of subsamples represented by one or more coding units. After having obtained at least one subsample from amongst the plurality of subsamples of one of the timed samples, one track comprising the at least one obtained subsample is created. Next, the created track is independently encapsulated in at least one media segment file, said media segment file comprising mapping metadata for providing information about the at least one obtained subsample relative to the one of the timed samples and the layer it belongs to.

An online system more efficiently streams multimedia content over the Internet for play back on client devices with varying computing power and network bandwidths by generating enhanced manifest files that more efficiently identify suitable media representations of the multimedia content. Each media representation has multiple media segments according to predefined byte ranges and a manifest file, which identifies location of the media file, bitrates, resolution, byte range, total duration, and other metadata. The online system customizes a manifest file for a user based on various factors including device capacity, network connectivity type and geolocation of the user. The online system also generates manifest fetch commands, which more efficiently fetch media segments for streaming. In response to changes of streaming server and media file (e.g., increased popularity), the online system dynamically updates corresponding manifest files.

The invention relates to encapsulating tiled timed media data in a server and providing a timed media data bit-stream from encapsulated tiled timed media in a client device. The tiled timed media data comprises timed samples and each timed sample comprises a plurality of spatial subsamples. After having selected at least one spatial subsample from amongst the plurality of spatial subsamples of one of the timed samples, one tile track comprising the selected spatial subsample and one corresponding spatial subsample of each of the other timed samples is created for each selected spatial subsample. One composite track comprising at least one extractor identifying at least one of the created tile tracks is created. Each created track is independently encapsulated in at least one media segment file.

A method for streaming a vector image to a client computer, including: accessing a pre-processed vector image that was generated from a vector image, the pre-processed vector image including a plurality of local rectangular regions and a plurality of local vector objects, each local vector object being associated with one of the local rectangular regions; receiving a request from a user of a client computer for a desired portion of the vector image, for display at a desired pixel display resolution; identifying at least one local rectangular region from among the plurality of local rectangular regions of the pre-processed vector image, which is appropriate for generating the desired portion of the vector image at the desired display resolution; and transmitting the local vector objects associated with the at least one local rectangular region to the client computer.

A client device presents streaming media and includes a stream manager, a request accelerator, and a source component coupled to the stream manager and the request accelerator for determining which requests to make. A rate selection process can make rate decisions so that the buffer is filled when it is low, avoiding erratically changing rates and can choose the correct steady rate quickly. Multimedia download strategies can be used for HTTP that allow for accurate rate estimations, achieving link capacity even if network delays and packet loss rates are high, achieving timely delivery of the stream, and achieving relatively steady download rates with little short term variability. A receiver might use multiple HTTP connections, decompose media requests into smaller chunk requests, synchronize the connections using TCP flow control mechanisms, and request data in bursts. In addition, the receiver might use an HTTP pipelining process to keep the connections busy.

A client device presents streaming media and includes a stream manager for controlling streams, a request accelerator for making network requests for content, a source component coupled to the stream manager and the request accelerator for determining which requests to make, a network connection, and a media player. A process for rate estimation is provided that will react quickly to reception rate changes. The rate estimator can use an adaptive windowed average and take into account the video buffer level and the change in video buffer level in a way so to guarantee that the rate adjusts fast enough if there is a need, while keeping the windowing width large (and thus the measurement variance) large. A guarantee might be that when a rate drop or rise happens, the estimator adjusts its estimate within a time proportional to a buffer drain rate or buffer fill level.

An immersive device and method for streaming of immersive media are provided. The method includes receiving body motion coordinates of a user in each of three dimensions and determining deviation in the body motion by a first immersive device. A dominant direction of motion based on the deviation calculated is then determined. A request by the first immersive device for at least one media frame to be displayed is received by a second immersive device. The received request is processed by the second immersive device and the media frame to be displayed is segmented into a plurality of tiles by the second immersive device. One tile with the first pixel density and a remainder of the tiles of the plurality of tiles with a second pixel density are stitched by the second immersive device to render one immersive media frame which is displayed to the user.

Drag-type wind turbine blades for wind-driven electricity generators are vertically provided between plates of the generator. The wind turbine blades have a plate-like structure with a fin-shaped surface. The turbine blade comprises a wind receiving side consisting of a base section, a base concave-shaped wind receiving section, a convex-shaped wind streaming section, and a wind streaming side of a convex-shaped surface extending in a radiation direction on the back of the wind receiving side. The base end of the wind receiving side and the connecting side comprise an inverse parabolic concave-shaped connecting section to connect it to the base section of the wind streaming side.

Video streaming concepts are presented. In a first aspect, the video stream is formed as a multi-layered data stream with forming a set of one or more layers of the multi-layered data stream by copying from the coded version of the video content, while a composition of the at least one video is synthesized in at least a portion of pictures of a predetermined layer of the multi-layer data stream by means of inter-layer prediction. In a second aspect, inter-layer prediction is used to either substitute otherwise missing referenced pictures of a newly encompassed video by inserting replacement pictures, or portions of the newly encompassed video referencing, by motion-compensated prediction, pictures which are missing are replaced by inter-layer prediction. In a third aspect, output pictures inserted into the composed video stream so as to synthesize the composition of the video content by copying from a no-output portion of the composed data stream by temporal prediction, are inserted into the composed data stream so that output pictures are arranged in the data stream in the presentation time order rather than the coded picture order.

The invention relates to encapsulating partitioned timed media data in a server, the partitioned timed media data comprising timed samples, each timed sample comprising a plurality of subsamples. After having selected at least one subsample from amongst the plurality of subsamples of one of the timed samples, one partition track comprising the selected subsample and one corresponding subsample of each of the other timed samples is created for each selected subsample. Next, at least one dependency box is created, each dependency box being related to a partition track and comprising at least one reference to one or more of the other created partition tracks, the at least one reference representing a decoding order dependency in relation to the one or more of the other partition tracks. Each of the partition tracks is independently encapsulated in at least one media file.