4272 results about "Streaming data" patented technology

A Mobile Station (MS) is able to vertically roam in either direction between two different network, i.e. WWAN and WLAN. The MS is equipped with a dual mode Radio for WWAN and WLAN transmissions. The WLAN Radio is linked to a WLAN Enterprise Gateway Controller (EGC) via a first air link and the WWAN Radio is linked to a WWAN Base Transceiver Station (BTS) via a second air link. The EGC is connected to a Mobile Switching Center (MSC) which is in turn connected to the BTS. An outgoing VoIP call from the WLAN Radio to a remote party on the WWAN will transition or seamlessly switch over to a WWAN connection when the MS detects packet error rates, frequent scale back or consistent signal degradation. Upon such conditions, the WLAN Radio requests the EGC to request an Explicit Call Transfer via the MSC to the MS integrated WWAN Radio portion which automatically accepts the call based on referenced information stored in the user's subscriber identification module (SIM). Once the WWAN Radio is confirmed connected to the remote party on the WWAN, the WLAN Radio drops the WLAN connection. An incoming call between the MS and a remote user via the WWAN will transition to the WLAN Radio when the MS enters WLAN coverage. The MS issues an ECT to the WLAN. After user verification by the WLAN Radio and the EGC signals acceptance of the call, the WWAN Radio connection is dropped and the call is now established between the WLAN Radio and the remote party on the WWAN.

A high level transformation method and apparatus for converting data formats in the context of network applications, among other places. A flexible transformation mechanism is provided that facilitates generation of translation machine code. A translator is dynamically generated by a translator compiler engine. When fed an input stream, the translator generates an output stream by executing the native object code generated on the fly by the translator compiler engine. In addition, the translator may be configured to perform a bi-directional translation between the two streams as well as translation between two distinct protocol sequences. Further a translator may working in streaming mode, to facilitate streaming processing of documents.

Centralized video on demand (VoD) systems offer limited content and limited archival ability. Peer-to-peer networks allow users to share a wide selection of content directly among peers, but connections between peers may have limited uplink bandwidth and may be unreliable. The present invention according to various embodiments contemplates systems and methods for high quality and resilient transmission of streaming data from one or more sources within a heterogeneous peer-to-peer network to address these and other problems

Mechanisms and techniques provide a system that provides stream data to a client by monitoring operation of a stream control protocol such as RTSP associated with stream data transmitted between a client and a first stream server. The system detects a stream change event related to transmission of the stream data between the client and the first stream server and identifies a relative position within the stream data based on the operation of the stream control protocol. The system then establishes transmission of the stream data between the client and a second stream server starting at the relative position in the stream data. The system provides for mid-stream failover for the transmission of stream data such as real-time data with minimal perceptible loss of stream data by the client.

A method and apparatus for synchronizing streaming media with multiple output devices. One or more media servers serve media streams to one or more output devices (i.e., players). For playback synchronization, one output device is the “master”, whereas the remaining output devices are “slaves”. More data is requested from the media server by the “master” device to maintain a nominal buffer fill level over time. The “slave” devices receive streamed data from the media server at the rate determined by the master device's data requests, and the average rate of data flow over the streaming network is thus controlled by the frequency of the single “master” device's crystal. “Slave” devices make playback rate corrections to maintain respective buffer fill levels within upper and lower threshold levels. For slow networks, each media data packet timestamp is calculated from the time the master's buffer reaches nominal level.

Streaming video data from the video title is delivered to a client from a central server and a proxy server. To reduce the backbone bandwidth required, a portion of the video title is cached at the proxy server where the portion cached is distributed over the video title so as to reduce the peak bit rate required for the central server to send the remaining portion of the video title. The amount cached at the proxy server may be adjusted in accordance with access profile of video titles to improve caching efficiency. The portion cached may be the basic layer in a scalable multilayer approach where only the basic layer may be sent to a client who has limited bandwidth while clients with higher bandwidth capability may also receive the enhancement layer(s) for improved video reception.

A data distribution method is disclosed which can realize autonomous or private data distribution between user terminals in a network environment such as the Internet. In this method, the respective nodes exchange topology information indicating a connection relationship between upstream nodes and downstream nodes, and relay stream data from the upstream nodes to the downstream nodes. Each node arbitrarily separates from the network and connects to an upstream node in accordance with a predetermined condition.

A data networking system and method which allows efficient use of bandwidth for data streams such as video and audio. This invention allows network nodes to dynamically identify changing network conditions which are typical on wireless and power line networks. The system and method dynamically adapt to the changes which affect network bandwidth by changing compression rates, compression types, audio/video quality, motion masks, throughput for specific connections, or mass storage of data streams until the network is capable of sending the data. The result is an improved system that requires little or no user intervention as network conditions change.

A gateway application in a content engine multiplexes requests for real-time content to servers that, in turn, service the requests by streaming appropriate real-time content to requesting users. A software communication port of the content engine may be reserved to receive request messages from multiple client computers, at least two of which request streaming of real-time content according to different selected formats. After identifying client properties (e.g., a format for which to receive streaming real-time content) associated with the requests for real-time content, the gateway application identifies corresponding servers of the content engine to serve the real-time content according to the different selected formats. The gateway application forwards the requests for streaming of real-time content associated with the request messages to the corresponding servers which, in turn, satisfy the requests by streaming the requested real-time content to the client computers.

A system, method and computer program product for anti-malware processing of data stream that includes a plurality of logical data streams formed from a primary data stream; and a plurality of stream buffers, each buffering data of a corresponding logical data stream. A plurality of processing handlers each associated with one of the data streams, where the handlers are processing the data of the logical data stream buffered by its stream buffer. Each processing handler is associated with a particular functionality and at least one processing handler scans its logical data stream for malware presence. Each stream buffer has a configurable buffering policy. At least one of the processing handlers decompresses the data into one or more secondary streams. At least one of the processing handlers parses its logical data stream, creating one or more instances of secondary data streams. The scanning can be based on a signature search. At least one of the processing handlers parses its logical data stream to identify headers, wherein new secondary data streams are instantiated based on regions of interest in a future stream data at positions identified by the headers. The set of conditions is stored e.g., in a table, a list, and/or a registry.

A method and system for "selective" tunneling of streaming data from a server to a client in a computer network having one or more network segments. The server has a tunneler utility, and the client has a receiver utility. The receiver utility first attempts to detect if a given data stream is available via IP multicast on the network segment supporting the client. If not, then the receiver utility issues a request for a IP unicast stream. This request is serviced by the tunneler utility. The tunneler utility re-broadcasts the IP multicast feed using IP unicast to send the data stream directly to the requesting user and/or to a repeater utility. The receiver utility then receives and processes the data stream for output to the end user. Alternatively, the receiver application, or a network administrator, launches the repeater utility, which then converts the IP unicast stream back to IP multicast format for re-broadcast over the network segment to other clients.

In a mechanism for controlling a communication connection with policy control, after the communication connection with policy control is established in a communication network between a user equipment and service providing network element via a network control element on the basis of an initial packet data protocol context, a modification of the initial packet data protocol context for the communication connection is requested or initiated at the network control element. When the modification is authorized, relevant resources for a modified packet data protocol context usable for signalling traffic and transmission of media stream data are set up.

A disk drive is disclosed comprising a disk, a head actuated over the disk, a host interface for receiving disk access commands from a host, a command queue for queuing the disk access commands, and a stream detection engine for evaluating the disk access commands to detect a plurality of streams accessed by the host. The stream detection engine maintains a stream data structure for each detected stream, wherein the stream data structure comprises a frequency counter for tracking a number of disk access commands associated with the stream out of a predetermined number of consecutive disk access commands received from the host. A disk controller selects one of the streams for servicing in response to the frequency counters.

A system and process for controlling the coding bit rate of streaming media data is presented where a server streams data that exhibits one of a number of coding bit rates supported by the server. Initially, the server chooses the coding bit rate. However, after this startup period, the client provides coding bit rate requests. The server transmits the streaming media data at the most appropriate supported coding bit rate closest to the rate requested. The coding bit rates requested are those estimated to provide a high quality playback of the streaming data while still keeping a decoder buffer of the client filled to a desired level. A leaky bucket model is incorporated so that the changes in buffer duration due to natural variation in the instantaneous coding bit rate are not mistaken for changes in buffer duration due to network congestion.

A stream data node receives real-time streamed data from one or more input devices, dynamically filters the streamed data to reduce the streamed data, and delivers the reduced data when requested. By providing real-time filtering of the data, the amount of data that must be stored in a database may be substantially reduced. The stream data node can perform aggregation functions, group functions, and select functions, thereby also significantly reducing the amount of data that must be stored in a database. The stream data node may also be part of a query execution data structure, where it delivers its data when requested by another node in the query execution data structure.

Provided is a stream data processing method that can effectively handle delay data. In the stream data processing method of processing data whose lifetime is defined by a window, an operation result excluding a delay tuple is immediately output along with an unconfirmed flag according to delay processing HBT while a midway processing result necessary for reproduction is retained along with the lifetime, and when the delay tuple arrives, a correct processing result is calculated from the delay tuple and the processing result restore tuple.

An on demand content delivery platform for delivering on demand digital assets includes a network transport composed of network elements. A content delivery path extends from an application server, through the network transport, to a client. During content delivery, at a network element, data is inserted into the content delivery path to produce a content stream containing inserted in-stream data. In one implementation, the content is conditioned in accordance with instructions present in the in-stream data. In another implementation, the in-stream data represents session information and is utilized for stateless recovery of session information.

A system for predictive analysis of very large data sets using a distributed computational graph has been developed. Data receipt software receives streaming data from one or more sources. In a batch data pathway, data formalization software formats input data for storage. A batch event analysis server inspects stored data for trends, situations, or knowledge. Aggregated data is passed to message handler software. System sanity software receives status information from message handler and optimizes system performance. In the streaming pathway, transformation pipeline software manipulates the data stream, provides results back to the system, receives directives from the system sanity and retrain software.

Provided are a stream distribution system and a failure detection method capable of easily identifying the cause of quality loss in stream distribution. This stream distribution system includes a first server for communicating with a client terminal via a router and sending stream data, and a second server configured as a redundant server of the first server and connected to the first server. The first server has a communication status notification unit for sending a connection management table concerning the communication with the client terminal to the second server. The second server has a packet recording unit for acquiring a mirror packet, which is a copy of a packet sent to the first server, from the router, and a network failure monitoring unit for detecting a failure in a network between the first server and the client terminal based on the connection management table and a packet buffer.

The present invention may be regarded as a video recording system and method of transferring a non-time-critical, error-intolerant data segment stored on a disk drive, which is responsive to a set of data transfer commands generated by a host processor and which is operating in a mode optimized for transferring time-critical, error-tolerant streaming data segments stored or to be stored on the disk drive. The method includes sending a sequence of data transfer commands generated by the host processor to the disk drive to transfer a respective sequence of time-critical, error-tolerant streaming data segments at a required data transfer rate. The method further includes selectively interposing a first data transfer command into the sequence of data transfer commands, the first data transfer command initiating a first transfer of the non-time-critical, error-intolerant data segment from a first storage location. The method further includes transmitting a data transfer error signal generated by the disk drive to the host processor, the data transfer error signal having a state that indicates whether any data transfer errors have occurred with respect to the first transfer of the non-time-critical, error-intolerant data segment. The method further includes selectively interposing a second data transfer command into the sequence of data transfer commands, the second data transfer command initiating a second transfer of the non-time-critical, error-intolerant data segment from a second storage location, thereby utilizing storage redundancy to achieve an accuracy required for the non-time-critical, error-intolerant data segment while maintaining the required data transfer rate of the sequence of time-critical, error-tolerant data segments.