390results about How to "Reduce processing overhead" patented technology

A runtime adaptable security processor is disclosed. The processor architecture provides capabilities to transport and process Internet Protocol (IP) packets from Layer 2 through transport protocol layer and may also provide packet inspection through Layer 7. Further, a runtime adaptable processor is coupled to the protocol processing hardware and may be dynamically adapted to perform hardware tasks as per the needs of the network traffic being sent or received and / or the policies programmed or services or applications being supported. A set of engines may perform pass-through packet classification, policy processing and / or security processing enabling packet streaming through the architecture at nearly the full line rate. A high performance content search and rules processing security processor is disclosed which may be used for application layer and network layer security. A scheduler schedules packets to packet processors for processing. An internal memory or local session database cache stores a session information database for a certain number of active sessions. The session information that is not in the internal memory is stored and retrieved to / from an additional memory. An application running on an initiator or target can in certain instantiations register a region of memory, which is made available to its peer(s) for access directly without substantial host intervention through RDMA data transfer. A security system is also disclosed that enables a new way of implementing security capabilities inside enterprise networks in a distributed manner using a protocol processing hardware with appropriate security features.

A method and apparatus provides OFDM signal compression for transfer over serial data links in a base transceiver system (BTS) of a wireless communication network. For the uplink, an RF unit of the BTS applies OFDM cyclic prefix removal and OFDM frequency transformation of the baseband signal samples followed by frequency domain compression of the baseband signal samples, resulting from analog to digital conversion of received analog signals followed by digital downconversion, forming compressed coefficients. After transfer over the serial data link, the baseband processor applies frequency domain decompression to the compressed coefficients prior to further signal processing. For the downlink, the RF unit performs frequency domain decompression of the compressed coefficients and applies OFDM inverse frequency transformation of the decompressed coefficients and OFDM cyclic prefix insertion prior to digital upconversion and digital to analog conversion, generating the analog signal for transmission over the antenna.

A single-sign-on to access multiple networks residing at multiple domains is disclosed. In particular the single-sign-on features refers to the authentication and the authorization process carried out among the different network administration domains so that the terminal using the end service need not explicitly initiate the authentication process each time it accesses a new service. This invention's single-sign-on feature can be extended for usage in a federated domain environment and non-federated domain environment. The non-federated domains are able to form an indirect federation chain through other domains in order to utilize this invention. Therefore discovery of intermediate domains to form a federation chain is also covered. The management of user credentials to allow a Visited Domain to perform authentication is also covered in this invention.

A switch is presented including a host input / output (I / O) port adapted for coupling to a controller, multiple device I / O ports each adapted for coupling to at least one device, and logic coupled between the host I / O port and the device I / O ports configured to selectively form a communication channel between the host I / O port and one of the device I / O ports. The switch may operate in a connected mode and a disconnected mode. When in the switch is in the disconnected mode, the logic may not form a communication channel between the host I / O port and any of the device I / O ports. In an ATA embodiment, the switch may comply with an AT attachment (ATA) standard, and thus be an ATA switch. The host I / O port may be adapted for coupling to an ATA controller, the device I / O ports may be adapted for coupling to at least one ATA device, and the logic may selectively form an ATA communication channel between the host I / O port and one of the device I / O ports. Several methods for exchanging data between a processing unit coupled to the host I / O port of the switch and one or more devices coupled to device I / O ports of the switch are described. Several methods for performing direct memory access (DMA) transfers to move data between a memory of the processing unit and one or more of the devices are also described.

A distributed collection of web-crawlers to gather information over a large portion of the cyberspace. These crawlers share the overall crawling through a cyberspace partition scheme. They also collaborate with each other through load balancing to maximally utilize the computing resources of each of the crawlers. The invention takes advantage of the hierarchical nature of the cyberspace namespace and uses the syntactic components of the URL structure as the main vehicle for dividing and assigning crawling workload to individual crawler. The partition scheme is completely distributed in which each crawler makes the partitioning decision based on its own crawling status and a globally replicated partition tree data structure.

A method and apparatus provide signal compression for transfer over serial data links in a base transceiver system (BTS) of a wireless communication network. For the uplink, an RF unit of the BTS applies frequency domain compression of baseband signal samples, resulting from analog to digital conversion of received analog signals followed by digital downconversion, forming compressed coefficients. After transfer over the serial data link, the baseband processor then applies frequency domain decompression to the compressed coefficients prior to normal signal processing. For the downlink, the baseband processor applies frequency domain compression of baseband signal samples and transfers the compressed coefficients to the RF unit. The RF unit applies frequency domain decompression to the compressed coefficients prior to digital upconversion and digital to analog conversion, generating the analog signal for transmission over the antenna. This abstract does not limit the scope of the invention as described in the claims.

A method and apparatus for encoding video includes selecting a prediction motion vector for a current block of a current image frame from respective motion vectors of two or more neighbor blocks of the current block. Then the current block and a neighbor block corresponding to said prediction motion vector are checked to determine whether they are motion correlated. Checking motion correlation includes determining that the difference between the best correlation from the correlation of the current block with one or more neighbor blocks and the correlation of the neighbor block with a block in the previous image frame at a location defined by the prediction motion vector fulfils a predetermined criterion.

A method includes receiving at least one transport block and determining from the at least one transport block a first data unit, wherein a portion but not all of the first, data unit includes a second data unit; determining information corresponding to acknowledgement status of the first data unit; determining, based at least on the information, whether a request should be performed requesting retransmission of the second data unit; and performing the request in response to a determination the request should be performed. Another method includes determining information corresponding to acknowledgement status of a previously transmitted data unit, wherein a portion but not all of the previously transmitted data unit includes a second data unit; determining, based at least on the information, whether retransmission of the second data unit should occur; and performing the retransmission of the second data unit in response to a determination the retransmission should be performed.

A method for simulating bonus awards in a finite award pool system is disclosed. The finite award pool comprises a plurality of primary awards and at least one simulated bonus award, where at least one of the primary awards indicate further entitlement to one of the simulated bonus awards. The simulated bonus awards may not be selected as a primary award per se, but constitute a portion of the actual primary award when combined with the primary award associated therewith. Additionally, the present arrangement allows simulation of more complex bonus award in finite pool systems by providing multiple or nested bonus level selections from either primary prizes or bonus prizes.

A system and method for provisioning a push notification session via a communications network between an application on a client terminal and a server corresponding to the application. In one aspect, a push provisioning entity transmits a message to the client terminal, whereby to configure the client terminal into a state in which it is able to request a push notification session with the server. An application on the client terminal can then request establishment of a push notification session by transmitting a push notification session request message to the push provisioning entity. The push provisioning entity generates a token for use in validating the push notification session, associates the generated token with the application and transmits the token to the application, which uses it to establish the push notification session.

A runtime adaptable security processor is disclosed. The processor architecture provides capabilities to transport and process Internet Protocol (IP) packets from Layer 2 through transport protocol layer and may also provide packet inspection through Layer 7. A high performance content search and rules processing security processor is disclosed which may be used for application layer and network layer security. A scheduler schedules packets to packet processors for processing. An internal memory or local session database cache stores a session information database for a certain number of active sessions. The session information that is not in the internal memory is stored and retrieved to / from an additional memory. An application running on an initiator or target can in certain instantiations register a region of memory, which is made available to its peer(s) for access directly without substantial host intervention through RDMA data transfer.

A runtime adaptable protocol processor is disclosed. The processor architecture provides capabilities to transport and process Internet Protocol (IP) packets from Layer 2 through transport protocol layer and may also provide packet inspection through Layer 7. Further, a runtime adaptable processor is coupled to the protocol processing hardware and may be dynamically adapted to perform hardware tasks as per the needs of the network traffic being sent or received and / or the policies programmed or services or applications being supported. A set of engines may perform pass-through packet classification, policy processing and / or security processing enabling packet streaming through the architecture at nearly the full line rate. A scheduler schedules packets to packet processors for processing. An internal memory or local session database cache stores a session information database for a certain number of active sessions. The session information that is not in the internal memory is stored and retrieved to / from an additional memory. An application running on an initiator or target can in certain instantiations register a region of memory, which is made available to its peer(s) for access directly without substantial host intervention through RDMA data transfer. A security system is also disclosed that enables a new way of implementing security capabilities inside enterprise networks in a distributed manner using a protocol processing hardware with appropriate security features.

A network monitoring system and method for analyzing network traffic is provided. This network monitoring system and method employ flow monitoring to analyze the traffic flow inside a switching device. All message packets entering the switching device are filtered and then sampled. After message packets are sampled, the switching device generates reporting packets containing network information related to the sampled packets. These reporting packets are then transmitted to a monitor server for analysis. Generally, the monitor server is coupled to a number of the switching devices so that the overall performance of the network can be gathered and presented to the users.

Cryptographic communication between communication terminals can be realized even when a plurality of cryptographic algorithms are present, and secure cryptographic communication for a longer time is realized without increasing a processing overhead at each of the communication terminals. A key management server manages cryptographic algorithms that can be used by each of the communication terminal, and searches for a cryptographic algorithm common to the communication terminals, and notifies each of the communication terminals of the cryptographic algorithm found by the search together with plural key generation informations, each piece containing a key to be used in the cryptographic algorithm or a key type for generating the key. Each of the communication terminals sequentially switches the plural key generation informations notified from the key management server, and performs the cryptographic communication with a communication counterpart in accordance with the cryptographic algorithm notified from the key management server.

A network monitoring system and method for analyzing network traffic is provided. This network monitoring system and method employ flow monitoring to analyze the traffic flow inside a switching device. All message packets entering the switching device are filtered and then sampled. After message packets are sampled, the switching device generates reporting packets containing network information related to the sampled packets. These reporting packets are then transmitted to a monitor server for analysis. Generally, the monitor server is coupled to a number of the switching devices so that the overall performance of the network can be gathered and presented to the users.

A method and system for processing packets allows consolidation of security processing. Security processing is performed in accordance with multiple security policies. This processing is done in a single front end processing block. Different security processes can be performed in parallel. Processing overhead is reduced by eliminating the need to redundantly check packet characteristics to assess the different security requirements imposed by security policies. Further, the present invention also substantially reduces the CPU cycles required to transport data back and forth from memory to a cryptographic coprocessor.

Certain embodiments of the invention may be found in a method and system for antenna selection diversity with prediction. An antenna diversity system may use information that it has stored on the antenna selection process in previous frames to predict the starting receiving antenna and the starting transmission antenna for the next frame. The prediction may be based on which antennas were selected in previous frames or may be based metrics associated with performance of the antennas. Prediction may be based on a majority polling scheme of previously selected antennas in a determined number of previous frames. Prediction may also be based on a weighted sum of at least one selection metric for all antennas in a determined number of previous frames. Antenna prediction provides a significant performance improvement by reducing the processing and operational overhead in cases where a transmit or a receive antenna dominates.

A microcontroller and a controlling system having the same are provided, in which the increase in the program code for performing floating-point arithmetic, in particular, the increase in the amount of code due to a variable are suppressed, and the processing overhead for converting fixed-point data into floating-point data is reduced. The microcontroller includes a floating-point converter which inputs integer data and corresponding decimal point position data as fixed-point data and which converts the input data into floating-point data by acquiring a fraction part, an exponent part, and a sign of the floating type from the input data, and a floating-point arithmetic logic unit which receives the output of the floating-point converter and calculates the floating-point data. The floating-point converter acquires the exponent part by performing addition and subtraction of the decimal point position data and the shift amount of the fraction part to the integer data.

A system and method is disclosed for implementing a multipoint control unit in an endpoint that is participating in and managing a multipoint audio conference in a packet network. The multipoint control unit establishes audio communications between a plurality of endpoints of the packet network, mixes audio communications from the plurality of endpoints, and provides echo cancellation for the endpoint that is managing the multipoint audio conference.

A device for ensuring reliable data packet throughput in a redundant system includes a splitter that creates copies of a data packet and sends each copy to a separate intermediate source for processing, parallel buffers for receiving the processed packets from the intermediate sources, and a comparator for determining whether the data packets are equivalent.

A method of high packet rate network processing in a system that includes a physical host and a set of physical network interface controllers (PNICs). The physical host is hosting a set of data compute nodes (DCNs). Each DCN includes a virtual network interface controller (VNIC) for communicating with one or more PNICs to exchange packets. The method determines that a rate of packets received from a particular DCN at the VNIC of the particular DCN exceeds a predetermined threshold. The method performs polling to determine the availability of packets received at the VNIC from the particular DCN while the rate of packets received from the DCN at the VNIC is exceeding the threshold. The method utilizes interrupts to determine the availability of packets received at the VNIC from the particular DCN while the rate of packets received from the DCN at the VNIC does not exceed the threshold.

A circuit arrangement, program product and method are provided for resetting a dynamically grown Accelerated Data Structure (ADS) used in image processing in which an ADS is initialized by reusing the root node of a prior ADS and resetting at least one node in the prior ADS to break a link between the reset node and a linked-to node in the prior ADS. By doing so, the memory allocated to the prior ADS may be reused for the new ADS, without having to clear or wipe out all of the allocated memory. In addition, in some instances, given the similarity of many image frames, often some or all of the node structure of a prior ADS may be reused for a new ADS, requiring only the contents of nodes to be cleared, instead of having to clear out all of the nodes in the prior ADS. As a result, the processing overhead associated with initializing a new ADS can be significantly reduced.

The invention provides a router device, a communication device, a routing method, a routing program, and a computer-readable recording medium recorded with the routing program that enable to improve communication efficiency. The communication data receiving section 10 receives communication data from the high-speed transmission medium 2. The communication data storage 11 stores the received communication data therein. The communication data sending section 12 sends the communication data to the low-speed transmission medium 3. The communication data temporal storage 13 temporarily stores the communication data sent from the communication data sending section 12 therein. The destination comparing section 14 compares the destination of the communication data stored in the communication data storage 11 with the destination of the communication data stored in the communication data temporal storage 13. The communication data transmission controlling section 15 designates the communication data sending section 12 to send the communication data stored in the communication data storage 11 if a comparison result by the destination comparing section 14 indicates destination matching or if no communication data is stored in the communication data temporal storage 13. The communication data erasing section 16 erases the transmitted communication data from the communication data storage 11.

A method for operating a centralized controller in a communications network with a plurality of transmission points includes generating a plurality of overlays for the communications network in accordance with first mutual intercell interference levels for transmission point pairs in the communications network, wherein each overlay of the plurality of overlays comprises virtual transmission points, and selecting a first overlay of the plurality of overlays in accordance with a merit measure derived from first user equipments (UEs) operating in the communications network tentatively scheduled to each overlay of the plurality of overlays. The method also includes scheduling a first subset of the first UEs operating in the communications network during a first resource unit in accordance with the selected first overlay.

The performance of closed loop transmit diversity (CLTD) systems may be improved, in accordance with aspects of the present invention, by encoding antenna control information fed back from a mobile station to a base station. As compared to prior art CLTD systems that send antenna control bits in unencoded feedback messages, encoding the antenna control information may result in reduced feedback delays and reduced transmission power. Further, in accordance with some aspects of the present invention, the antenna control bits may be fed back to the base station on a common feedback channel also used to feed back channel quality indication, thus reducing processing overhead.

The current invention provides a virtual world simulation system capable of hosting with massive amount of concurrent players by integrating commodity parallel co-processors into servers. The current invention proposes novel parallel processing algorithms to make use of commodity parallel co-processors like a graphic processing unit (GPU) or any specialized hardware with parallel architecture design like a field-programmable gate array (FPGA), to accelerate virtual world simulation.

A method, apparatus, computer medium, and other embodiments for selectably enabling a plurality of data transfer modes along one or more channels are described. In one embodiment, data transfer between a first device and a second device is controlled based on selecting a combination of access and operation modes. In another embodiment, a video processing system capable of selectably enabling a plurality of data transfer modes along one or more channels is described.