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3758 results about "Stream" patented technology

In computer science, a stream is a sequence of data elements made available over time. A stream can be thought of as items on a conveyor belt being processed one at a time rather than in large batches.

Media delivery using quality of service differentiation within a media stream

A WLAN system adapted to apply QoS differentiation to a media stream to be transmitted from a transmitting station (STA) to a receiving STA of that system. The transmitting STA processes the media stream to generate a base sub-stream and one or more enhancement sub-streams for subsequent transmission over a wireless communication channel and assigns different priorities to different sub-streams. Depending on the channel conditions, the transmitting STA may select to discard, without transmission, portions of data from enhancement sub-streams. The selection process is based on the assigned priority and operates to preserve as much of relatively high-priority data as possible. The receiving STA then processes the received data to generate a reconstructed media stream, which provides signal quality equal to or better than the signal quality supported by the base sub-stream. Advantageously, a WLAN system of the invention is adapted to change signal quality dynamically and incrementally in a manner commensurate with current channel conditions without the need for communication between the higher and lower network layers. In addition, it provides gradual and graceful degradation of signal quality when channel conditions deteriorate as opposed to abrupt degradation inherent in analogous prior art systems.
Owner:AVAGO TECH INT SALES PTE LTD

Intelligent data storage and processing using fpga devices

A data storage and retrieval device and method is disclosed. The device includes at least one magnetic storage medium configured to store target data and at least one re-configurable logic device comprising an FPGA coupled to the at least one magnetic storage medium and configured to read a continuous stream of target data therefrom, having been configured with a template or as otherwise desired to fit the type of search and data being searched. The re-configurable logic device is configured to receive at least one search inquiry in the form of a data key and to determine a match between the data key and the target data as it is being read from the at least one magnetic storage medium. This device and method can perform a variety of searches on the target data including without limitation exact and approximate match searches, sequence match searches, image match searches and data reduction searches. This device and method may be provided as part of a stand-alone computer system, embodied in a network attached storage device, or can otherwise be provided as part of a computer LAN or WAN. In addition to performing search and data reduction operations, this device may also be used to perform a variety of other processing operations including encryption, decryption, compression, decompression, and combinations thereof.
Owner:IP RESERVOIR

Methods, systems, and devices using reprogrammable hardware for high-speed processing of streaming data to find a redefinable pattern and respond thereto

A reprogrammable packet processing system for processing a stream of data is disclosed herein. A reprogrammable data processor is implemented with a programmable logic device (PLD), such as a field programmable gate array (FPGA), that is programmed to determine whether a stream of data applied thereto includes a string that matches a redefinable data pattern. If a matching string is found, the data processor performs a specified action in response thereto. The data processor is reprogrammable to search packets for the presence of different data patterns and / or perform different actions when a matching string is detected. A reconfiguration device receives input from a user specifying the data pattern and action, processes the input to generate the configuration information necessary to reprogram the PLD, and transmits the configuration information to the packet processor for reprogramming thereof.
Owner:WASHINGTON UNIV IN SAINT LOUIS

Method and system for real-time event journaling to provide enterprise data services

A data management system or “DMS” provides a wide range of data services to data sources associated with a set of application host servers. The data management system typically comprises one or more regions, with each region having one or more clusters. A given cluster has one or more nodes that share storage. To facilitate the data service, a host driver embedded in an application server connects an application and its data to a cluster. The host driver provides a method and apparatus for capturing real-time data modifications and application state notifications and, in response, generating data transactions in the form of an event journal that is provided to the data management system. The driver functions to translate traditional file / database / block I / O into a continuous, application-aware, output data stream. Using the streams generated in this manner, the DMS offers a wide range of data services that include, by way of example only: data protection (and recovery), and disaster recovery (data distribution and data replication).
Owner:QUEST SOFTWARE INC

Intelligent data storage and processing using fpga devices

A data storage and retrieval device and method is disclosed. The device includes at least one magnetic storage medium configured to store target data and at least one re-configurable logic device comprising an FPGA coupled to the at least one magnetic storage medium and configured to read a continuous stream of target data therefrom, having been configured with a template or as otherwise desired to fit the type of search and data being searched. The re-configurable logic device is configured to receive at least one search inquiry in the form of a data key and to determine a match between the data key and the target data as it is being read from the at least one magnetic storage medium. This device and method can perform a variety of searches on the target data including without limitation exact and approximate match searches, sequence match searches, image match searches and data reduction searches. This device and method may be provided as part of a stand-alone computer system, embodied in a network attached storage device, or can otherwise be provided as part of a computer LAN or WAN. In addition to performing search and data reduction operations, this device may also be used to perform a variety of other processing operations including encryption, decryption, compression, decompression, and combinations thereof.
Owner:IP RESERVOIR

Microprocessor with improved data stream prefetching

A microprocessor with multiple stream prefetch engines each executing a stream prefetch instruction to prefetch a complex data stream specified by the instruction in a manner synchronized with program execution of loads from the stream is provided. The stream prefetch engine stays at least a fetch-ahead distance (specified in the instruction) ahead of the program loads, which may randomly access the stream. The instruction specifies a level in the cache hierarchy to prefetch into, a locality indicator to specify the urgency and ephemerality of the stream, a stream prefetch priority, a TLB miss policy, a page fault miss policy, a protection violation policy, and a hysteresis value, specifying a minimum number of bytes to prefetch when the stream prefetch engine resumes prefetching. The memory subsystem includes a separate TLB for stream prefetches; or a joint TLB backing the stream prefetch TLB and load / store TLB; or a separate TLB for each prefetch engine.
Owner:ARM FINANCE OVERSEAS LTD

System and method for data detection in wireless communication systems

A system and method for data detection in a wireless communication system wherein the system comprises a receiver for receiving spatial-subspace data transmitted over a plurality of spatial-subspace channels of a sub-carrier which may comprise at least one of coded and uncoded spatial-subspace channels. The receiver comprises a receiver weighting unit for providing receive-weighed spatial-subspace data and a data estimation unit for performing an iterative processing method on the receive-weighted spatial-subspace data to estimate output data related to the input data symbol stream. The-iterative processing method comprises successively processing data on each of the plurality of spatial-subspace channels in the receive-weighted spatial-subspace data.
Owner:VECIMA NETWORKS

Multi-output packet server with independent streams

A method of serving content to multiple clients via a network is provided. Independent sessions with each of a plurality of clients are maintained, wherein the number of clients in the plurality of clients can vary over time, and wherein the start of each session and the end of each session can be independent of the start and end of other sessions. A stream of packet payloads is received, each packet payload of the stream of packet payloads including data generated from the content, wherein each packet payload in at least a subset of the stream of packet payloads includes a different set of data. Each packet payload in the stream of packet payloads is transmitted to each client of the plurality of clients in corresponding packets, wherein the packet payload transmitted to a client at any particular time is independent of the state of the corresponding session.
Owner:QUALCOMM INC

Method and system for transparent in-line protection of an electronic communications network

The invention provides a method and system for enabling in-line communications channels between a plurality of computational systems and a switch, and / or a plurality of switches and a router. In a first version of the invention an in-line system receives uplinks of aggregated data from a plurality of switches and applies policies to the each aggregated data stream prior to transmission of the aggregated data streams from the in-line system to the router. At least one computational system provides a user identification associated with a user profile to the in-line system. The user profile informs indicates to the in-line system of the constraints imposed upon and activities permitted to the computational system originating the user identification. The constraints may include (a) one or more customized policies, (b) policies applicable to a group associated with the user identification, (c) virus / worm detection & protection, (d) a firewall, (e) virtual private network rules, and / or (f) encryption / decryption. In a second version the in-line system is configured to communicate directly with one or more computational systems as well as one or more switches.
Owner:NEVIS NETWORKS INC

Intelligent data storage and processing using FPGA devices

A data storage and retrieval device and method is disclosed. The device includes at least one magnetic storage medium configured to store target data and at least one re-configurable logic device comprising an FPGA coupled to the at least one magnetic storage medium and configured to read a continuous stream of target data therefrom, having been configured with a template or as otherwise desired to fit the type of search and data being searched. The re-configurable logic device is configured to receive at least one search inquiry in the form of a data key and to determine a match between the data key and the target data as it is being read from the at least one magnetic storage medium. This device and method can perform a variety of searches on the target data including without limitation exact and approximate match searches, sequence match searches, image match searches and data reduction searches. This device and method may be provided as part of a stand-alone computer system, embodied in a network attached storage device, or can otherwise be provided as part of a computer LAN or WAN. In addition to performing search and data reduction operations, this device may also be used to perform a variety of other processing operations including encryption, decryption, compression, decompression, and combinations thereof.
Owner:IP RESERVOIR

Efficient distribution of encrypted content for multiple content access systems

A system and method for digital data distribution is disclosed. The system and method provides a set of one or more source streams encoded by an encoder to form a common data stream for distribution to a plurality of destination systems, each authorized to access at least a portion of the common data stream. Encryption comprises obtaining the source stream, identifying some blocks of the source stream as secure blocks, identifying some other blocks of the source stream as unsecured blocks, encrypting the secure blocks for each of a plurality of destination system classes wherein each of the plurality of destination systems is a member of one or more destination system classes, and each of the blocks of an encrypted secure block set is decryptable by destination systems in the class associated with that encrypted secure block set.
Owner:GOOGLE TECH HLDG LLC

Dynamic allocation and de-allocation of multiple communication channels for bandwidth on-demand

A method and apparatus are provided that dynamically allocates communication streams to provide flexible bandwidth to terminals of a communications system. In one embodiment the invention includes identifying a first terminal and a second terminal to each other for the communication of traffic over at least one of multiple streams; and dynamically allocating and de-allocating further streams based on the traffic to be carried and the traffic capacity of opened streams between the first and the second terminals. The invention may further include comparing traffic to be carried between the first terminal and the second terminal to the capacity of any open streams between the first terminal and the second terminal and allocating or de-allocating at least one stream based on the comparison. Alternatively, the invention may include comparing depths of transmit queues to the capacity of any open streams between the first terminal and the second terminal and allocating or de-allocating at least one stream based on the comparison.
Owner:INTEL CORP

Optimization methods for the insertion, protection, and detection of digital watermarks in digital data

Disclosed herein are methods and systems for encoding digital watermarks into content signals. Also disclosed are systems and methods for detecting and / or verifying digital watermarks in content signals.According to one embodiment, a system for encoding of digital watermark information includes: a window identifier for identifying a sample window in the signal; an interval calculator for determining a quantization interval of the sample window; and a sampler for normalizing the sample window to provide normalized samples.According to another embodiment, a system for pre-analyzing a digital signal for encoding at least one digital watermark using a digital filter is disclosed.According to another embodiment, a method for pre-analyzing a digital signal for encoding digital watermarks comprises: (1) providing a digital signal; (2) providing a digital filter to be applied to the digital signal; and (3) identifying an area of the digital signal that will be affected by the digital filter based on at least one measurable difference between the digital signal and a counterpart of the digital signal selected from the group consisting of the digital signal as transmitted, the digital signal as stored in a medium, and the digital signal as played backed.According to another embodiment, a method for encoding a watermark in a content signal includes the steps of (1) splitting a watermark bit stream; and (2) encoding at least half of the watermark bit stream in the content signal using inverted instances of the watermark bit stream.Other methods and systems for encoding / decoding digital watermarks are also disclosed.
Owner:WISTARIA TRADING INC

Bcencryption (BCE) - a public-key based method to encrypt a data stream

A system and method for a web browser to convert an unencrypted character string into a cipher-text string combines a public-key encryption algorithm with a unique and constantly changing salt key. A private “server-key”, a public “client-key” and a server session ID are generated by the server, and the client-key and the session ID are sent to the browser with the code used to encrypt the message. The session-based string can be a randomly generated set of characters which changes between established user sessions and the salt key can be formed from the server session ID string. The server contains the matching code necessary to decrypt the stream using the private key.
Owner:KRONOS TECH SYST PARTNERSHIP

Transmission Quality Monitoring For Multimedia Streams

A network performance monitor and an associated method for monitoring the perceived transmission quality of a packetized multimedia signal encoded by a first codec are provided. The monitor includes a packet processor for performing real time direct counting of received and lost packets in the burst and gap states in the packet stream carrying the multimedia signal. A data processor is provided for determining packet loss distribution parameters using the burst and gap packet counters provided by the packet processor. In one aspect of the invention, the data processor is operative to compute an effective equipment impairment factor from the packet loss distribution parameters for a reference codec having known transmission impairments associated therewith, for assessing the network contribution to the perceived transmission quality of the multimedia signal.
Owner:ACTERNA LLC

Data federation methods and system

A method is provided for processing tree like data structures in a streaming manner. An initial context of name / value bindings is set up. A tree of objects is constructed. Each element in the tree of objects is represented as a function object that accepts a context parameter and a target parameter that it can send a stream of start, content, and end events to represent tree output. The parse tree of objects is examined for element names that are recognized as commands. The commands are converted to special function objects that implement command's semantics. Other elements, that are not recognized as commands, are mapped to a default function object.
Owner:SNAPBRIDGE SOFTWARE

Method and system for increasing data rate in wireless communications through aggregation of data sessions

An access aggregator may receive a data stream from a first computing device. The access aggregator may divide the data stream into a plurality of sub-streams. Then, the access aggregator may transmit the sub-streams over multiple wireless communication channels to a network interface. The network interface can then send the sub-streams to a second computing device. Similarly, the second computing device may send data to the network interface, where the data is divided into sub-streams. The sub-streams can be sent to the access aggregator over multiple wireless communication channels and then sent to the first computing device.
Owner:SPRING SPECTRUM LP
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