39th week of 2010 patent applcation highlights part 45 |
Patent application number | Title | Published |
20100246549 | System and Methods for Distributed Medium Access Control and QOS Scheduling in Mobile Ad-Hoc Networks - A communication device and method are provided for communicating with a receiving device over a channel within a mobile ad-hoc network. The receiving device includes a clear-to-send (CTS) packet generating portion that can generate and a CTS packet based on a parameter of the channel and that can transmit the CTS packet over the channel. The communication device includes a transmitter portion, a receiver portion and a management portion. The transmitter portion can transmit information into the channel. The receiver portion can receive information from the channel. The management portion includes a request-to-send (RTS) packet generating portion, a CTS packet receiving portion, a threshold database, a comparator and an RES packet generating portion. The management portion is in communication with the transmitter portion and the receiver portion. The RTS packet generating portion can generate a RTS packet and can provide the RTS packet to the transmitter portion. The transmitter portion can transmit the RTS packet to the receiving device by way of the channel. The receiver portion can receive the CTS packet from the receiving device by way of the channel and can provide the CTS packet to the CTS packet receiving portion. The threshold database can store a threshold value for the parameter of the channel and can provide the threshold value to the comparator. The CTS packet receiving portion can provide channel parameter information, to the comparator, based on the CTS packet. The comparator can compare the threshold value and the channel parameter information and can generate an instruction signal based on the comparison. The RES packet generating portion can generate an RES packet based on the instruction signal and can provide the RES packet to the transmitter portion. | 2010-09-30 |
20100246550 | HIGH PERFORMANCE WIRELESS NETWORKS USING DISTRIBUTED CONTROL AND SWITCH-STACK PARADIGM - A design and proof of concept of a new type of WLAN, complete with simulation and results from the simulation has been described. Each AP Node is implemented as a self-contained embedded OS unit, with all algorithms resident in its Operating system. The normal day-to-day functioning of the AP node is based entirely on resident control algorithms. Upgrades are possible through a simple secure communications interface supported by the OS kernel for each AP node. Benefits provided by a wireless network, as proposed in this invention, are that: it installs out of the box; the network is self-configuring; the network is redundant in that mesh network formalism is supported, ensuring multiple paths; load balancing is supported; there is no single point of failure; allows for decentralized execution; there is a central control; it is network application aware; there is application awareness; there is automatic channel allocation to manage and curtail RF interference, maximize non interference bandwidth and enable seamless roaming between adjoining wireless sub networks (BSS) and it supports the wireless equivalent for switching—for seamless roaming requirements. | 2010-09-30 |
20100246551 | Performance optimization for wireless networks with mixed modulation types - In one embodiment, different physical layer standards are segregated into different frequency channels. In one implementation, 802.11b traffic and 802.11g traffic are segregated into different frequency channels. A network management tool allows the user to specify channels to either, e.g., 802.11b-only, 802.11g-only, 802.11b preferred and 802.11g discouraged, or 802.11g preferred and 802.11b discouraged. Access points are given the capability of preventing or discouraging client traffic of either given type. | 2010-09-30 |
20100246552 | METHOD AND APPARATUS FOR DELIVERING IPP2T (IP-PUSH-TO-TALK) WIRELESS LAN MOBILE RADIO SERVICE - A wireless subscriber terminal (ST) for use with IP push-to-talk (IPP2T) service using a wireless local area network (WLAN) operating in a plurality of modes, including a mobile terminal having an ability to communicate over the air to a wireless Access Point (AP), the mobile terminal further programmable to use conventional WLAN protocols, and a method for operating the wireless terminal are described. | 2010-09-30 |
20100246553 | WIRELESS TRANSMISSION DEVICE, WIRELESS COMMUNICATION SYSTEM AND WIRELESS TRANSMISSION METHOD - A wireless transmission device which communicates with a wireless reception device, includes: a reception quality setting unit which sets the reception quality of at least one code channel among a plurality of code channels to be multiplexed to be different from the reception quality of the other code channels; and a transmitting unit which transmits a signal which has the reception quality set by the reception quality setting unit and is generated by multiplexing the plurality of code channels, to the wireless reception device. | 2010-09-30 |
20100246554 | DEVICE AND METHOD FOR REESTABLISHING A WIRELESS CONNECTION IN A WIRELESS NETWORK - A device and method enable reestablishing a wireless connection in a wireless network. The method includes detecting at a first wireless device that a previous wireless connection has been lost with a second wireless device that employs dynamic frequency selection (DFS) (step | 2010-09-30 |
20100246555 | SIMPLE BASE STATION CAPABLE OF COUPLING TO A MOBILE COMMUNICATION NETWORK VIA A TELEPHONE CABLE - A simple base station for coupling to a mobile communication network via a telephone cable, includes an antenna module for receiving and transmitting a plurality of frequency signals; a transmission control module setting up a plurality communication channels respectively corresponding to the frequency signals; a converting module coupled electrically to the transmission control module for converting a respective one of the frequency signals within a respective one of the communication channels into a packet; and a modem having a first end coupled electrically to the Internet via the telephone cable and a second end coupled electrically to the mobile communication network. | 2010-09-30 |
20100246556 | Communication method and apparatus - In a wireless communication system, the communicating stations reduce their transmitting power level when they detect interference exceeding a certain level. Interference is detected by down-shifting the received signal to place the desired signal in the baseband, then sampling the down-shifted signal, first at a sampling frequency high enough to catch the interference, then at a lower sampling frequency that excludes the interference. This system is useful for vehicle-to-vehicle communication in an environment in which vehicle-to-roadside communication may also be present at various nearby frequencies, because it does not require exact knowledge of the interfering frequencies and allows communication to continue even when interference is present. | 2010-09-30 |
20100246557 | RECEIVER APPARATUS AND RECEPTION METHOD - A receiver includes a sample and hold circuit that receives a signal (continuous time signal) that has been subject to frequency division multiplexing modulation, converts the signal to a discrete time signal, and outputs the discrete time signal, a discrete time filter that receives the signal output from the sample and hold circuit and attenuates a frequency component of a subcarrier different from a specified subcarrier, and a demodulation unit that extracts a digital baseband from a signal that has passed through the discrete time filter to complete a demodulation operation within one data symbol reception period. | 2010-09-30 |
20100246558 | NARROWBAND TRANSMISSIONS USING A PLURALITY OF ANTENNAS - Embodiments of the present disclosure describe orthogonal frequency division multiple access (OFDMA) transmissions using a plurality of antennas and/or transmit chains. Still other embodiments may be described and claimed. | 2010-09-30 |
20100246559 | RADIO COMMUNICATION BASE STATION APPARATUS AND RADIO COMMUNICATION MOBILE STATION APPARATUS - A radio communication base station device can efficiently obtain a multiuser diversity gain from frequency scheduling while reducing the amount of a reference signal occupying an uplink. In the device, a grouping section ( | 2010-09-30 |
20100246560 | METHOD OF COMMUNICATING WITH USER COOPERATION AND TERMINAL DEVICE OF ENABLING THE METHOD - Proposed is a user cooperative terminal device. The user cooperative device includes: a signal detector to receive a signal transmitted from a source node and detect a received signal; and a message generator to cancel interference caused by a neighboring user in the received signal, using a neighboring user message, and to generate a user message. The neighboring user may decode a received signal of the neighboring user to transfer the neighboring user message. | 2010-09-30 |
20100246561 | METHOD AND APPARATUS FOR POWER CONTROL OF SOUNDING REFERENCE SIGNAL (SRS) TRANSMISSION - Methods and apparatus for sounding reference signal (SRS) power control for a wireless transmitter/receiver unit (WTRU) are disclosed. These methods and apparatus include methods and apparatus for carrier-specific and carrier-common SRS power control in WTRUs that utilize carrier aggregation techniques. These methods and apparatus also include methods and apparatus for SRS power control in WTRUs utilizing both carrier aggregation and time division multiplexing (TDM) techniques. Additionally, these methods and apparatus include methods and apparatus for SRS power control for WTRUs utilizing multiple input multiple output MIMO operation. Methods and apparatus for SRS overhead reduction and power management in a WTRU are also disclosed. | 2010-09-30 |
20100246562 | Radio Communication System and Mobile Station Device - A mobile station device transmits a random access preamble to a base station device and performs uplink timing alignment based on the synchronization timing deviation information included in a random access response which the base station device transmits in response to the transmitted random access preamble, wherein in an uplink synchronous status, the mobile station device does not perform uplink timing alignment based on synchronization timing deviation information included in a random access response, which is a response to a random access preamble whose preamble ID is randomly selected by the mobile station device. | 2010-09-30 |
20100246563 | WIRELESS COMMUNICATION METHOD AND APPARATUS THEREOF - To provide a stable high speed wireless network, the relay process is solved at the lower layers (PHY layer, MAC layer) without depending on upper layers to reduce the load of the upper layers to the utmost. Discrimination is made between a packet of one's own station and a relay packet to process the presence and absence of the relay packet without using a CPU to construct a wireless network executing the relay processing at a high speed. Further, the retransmission is executed without using a CPU to provide a stable wireless network. In addition, the table for relay process (routing table) is constantly updated to add to the table the information of the packets of which processes are not executed to eventually suppress unnecessary processes. | 2010-09-30 |
20100246564 | METHODS AND SYSTEMS FOR TIMING ACQUISITION ROBUST TO CHANNEL FADING - The embodiments provide mechanisms for synchronizing a receiver with OFDM pilots that are robust in the presence of channel fading conditions. In addition to using instantaneous channel estimate values to locate the first arriving path and last arriving path, the methods calculate time-domain averaged channel estimate values and use those averaged values to determine an average first arriving path and last arriving path. A combination of the instantaneous first arriving path and last arriving path and the average first arriving path and last arriving path may then be used to determine the delay spread and calculate a timing offset to be applied in timing synchronization. The various embodiments introduce improvements under channel fading conditions. Time-domain averaging may be embodied in a flexible DSP processor, or implemented in hardware and/or software. Using both instantaneous and time-averaged channel estimates greatly improves the robustness of time synchronization under channel fading conditions. | 2010-09-30 |
20100246565 | System and method for displaying a called party calendar on a voice over IP phone display - A system and method for displaying a contact's availability information on a display of a voice over internet protocol (IP) phone is disclosed. The method includes sending a request for a selected telephone contact's availability information from the IP phone to a web service calendar module operable on a web server connected to the IP phone. The telephone contact's availability information is extracted from an application server connected to the web server. The availability information is formatted for display in a graphical user interface on the IP phone. The availability information for the telephone contact is the displayed on the IP phone to enable a user to determine when the selected telephone contact is available to receive a telephone call. | 2010-09-30 |
20100246566 | Serverless gateway infrastructure for voice or video - A system and method to provide voice or video over IP without a centralized control infrastructure is enabled by an overlay network of software devices. Such a device is comprised of VoIP server, PBX, PBX database, and a control module. The control module is used to store and retrieve items stored in the distributed databases hosted on the overlay networks. Two main functions provide by the serverless infrastructure are: VoIP call setup and tear-down, and accounting for a service provider. | 2010-09-30 |
20100246567 | SYSTEM AND METHOD FOR MANAGING CREATED LOCATION CONTEXTS IN A LOCATION SERVER - A system and method for creating a location uniform resource identifier (“URI”) for determining the location of a target device. A location request may be received for a target device. Location context information may be collected for the target device including starting information, validating information and policy information. This collected location context information may be encrypted in a location information server and converted to a form compatible with URI syntax. A location URI may then be constructed as a function of the converted information. | 2010-09-30 |
20100246568 | TELEPHONY SYSTEM WITH INTELLIGENT ENDPOINTS OR INTELLIGENT SWITCHES TO REDUCE DEPENDENCY OF ENDPOINTS ON APPLICATION SERVER - A system and a method are disclosed for reducing interaction between a server and an endpoint while executing features on an endpoint. The endpoint, and not the application server, includes part or all of the implementation of UT logic and feature logic. The endpoint therefore does not have to rely on server's instructions for executing a feature. The endpoint also includes an endpoint determination module for determining the parts of the UT logic and feature logic implemented on the endpoint and the parts implemented on a switch or a server. | 2010-09-30 |
20100246569 | TEMPORARY CONNECTION NUMBER MANAGEMENT SYSTEM, TERMINAL, TEMPORARY CONNECTION NUMBER MANAGEMENT METHOD, AND TEMPORARY CONNECTION NUMBER MANAGEMENT PROGRAM - The present invention makes it possible to connect to and communicate with a connect destination by using a temporary number. In the present invention, a temporary number user terminal ( | 2010-09-30 |
20100246570 | COMMUNICATIONS SESSION PREPARATION METHOD AND APPARATUS - Systems and methods for providing contextual information to one or more parties to a communications session are provided. More particularly, context information relevant to a party to a communications session is delivered to another party to the communications session as part of a communications message. In addition to information providing an identification of a party for whom context information is provided, embodiments of the present invention may make use of supplemental information in selecting context information for delivery. | 2010-09-30 |
20100246571 | SYSTEM AND METHOD FOR MANAGING MULTIPLE CONCURRENT COMMUNICATION SESSIONS USING A GRAPHICAL CALL CONNECTION METAPHOR - Disclosed herein are systems, methods, and non-transitory computer-readable storage media for managing a plurality of concurrent communication sessions via a graphical user interface (GUI). A system configured to practice the method presents a set of connected graphical elements representing a structure of the respective communication session via the GUI for each of a plurality of concurrent communication sessions. Each communication session has at least two participants and the appearance of the set of connected graphical elements is based on a communication mode. The system receives user input associated with one set of connected graphical elements and having an action associated with the respective communication session, and performs the action based on the received user input. The communication mode is one of voice over IP (VoIP), phone, videoconference, instant messaging, text messaging, and email. The action can combine two communication sessions or split one communication session into multiple communication sessions. | 2010-09-30 |
20100246572 | METHOD AND APPARATUS FOR PROVIDING USER ACCESS VIA MULTIPLE PARTNER CARRIERS FOR INTERNATIONAL CALLS - A method and apparatus for providing subscribers of a VoIP service provider to take advantage of wholesale arrangements made by the VoIP service provider with one or more international partner carrier network providers to one or more international countries are disclosed. Specifically, the present method enables a VoIP service provider to display a web page to their subscribers, for each destination country, with one or more international partner network providers and their corresponding calling rates and/or call completion success rates to each particular destination country. | 2010-09-30 |
20100246573 | TELECOMMUNICATION SYSTEM WITH PACKET-SWITCHED-MULTIMEDIA-SESSION-TO-CIRCUIT-SWITCHED-CALL TRANSFERRAL - Telecommunication systems with packet-switched multimedia terminals and nodes for packet-switched multimedia sessions and with servers for exchanging multimedia signaling information for the packet-switched multimedia sessions and with terminating units are provided with gateways for in response to transferral messages originating from the packet-switched multimedia terminals and arriving at the servers transferring packet-switched multimedia sessions between packet-switched multimedia terminals and nodes to circuit-switched calls between gateways and circuit-switched terminals via switches, to continue possibly interrupted sessions via replacing calls. The servers send invitation messages to gateways, which send setup messages to switches for setting up circuit-switched calls via partly alternative communication paths. The servers send information messages to terminating units for bringing the terminating units from session level to call level. Preferably, a packet-switched multimedia terminal and a circuit-switched terminal are one and the same terminal. | 2010-09-30 |
20100246574 | System and Method for Processing Packet Domain Signal - Embodiments of the present invention disclose a system and a method for processing a packet domain service signal, which enable a terminal that does not support an access control protocol of an Internet Protocol Multimedia Subsystem (IMS) to access the IMS and acquire the services in the IMS. An AGCF is added for shielding the differences of the users on the basis of the IMS defined in the | 2010-09-30 |
20100246575 | Virtual PBX based on Feature Server Modules - A virtual private branch exchange is formed by a plurality of interconnected feature server modules, each having an integral feature server that is configured and operates independently of the other feature server modules. Within a virtual private branch exchange, the feature server modules may be logically arranged in a hierarchy having at least a main feature server module and one or more subordinate feature server modules. A particular feature server module may operate in multiple virtual private branch exchanges, and may have a distinct set of rules for handling calls originating in different virtual private branch exchanges. | 2010-09-30 |
20100246576 | SYSTEM AND METHOD FOR PROVIDING ANONYMITY IN A SESSION INITIATED PROTOCOL NETWORK - A method for facilitating an anonymous communications session in a communications environment is provided that includes receiving, from a first endpoint, a request for a communication session involving a second endpoint. The method also includes identifying end user data associated with a first endpoint. The data associated with the first endpoint is mapped to an identity of the first endpoint. The second endpoint is shown the identity of the first endpoint and not the end user data associated with the first endpoint. | 2010-09-30 |
20100246577 | METHOD AND APPARATUS FOR SENDING BFD PACKETS, METHOD AND APPARATUS FOR DETECTING LINK FAULTS - A method for sending a BFD packet includes: obtaining information about intermediate nodes to be passed by the BFD packet, where the information about the intermediate nodes uniquely corresponds to a link to be traveled by the BFD packet or a session on the link; setting the obtained information about the intermediate nodes into the BFD packet; and sending the BFD packet to a peer through the link corresponding to the information about the intermediate nodes. A method for searching for session ID locally, a link fault detection method and a link fault detection apparatus are provided herein. | 2010-09-30 |
20100246578 | Data redistribution in data replication systems - A system includes one or more processors configured to redistribute one or more originator data subsets among a plurality of originator nodes and determine data redistribution information pertaining to redistribution of the one or more originator data subsets among the plurality of originator nodes. The system further includes a communication interface configured to send data redistribution information to a replica system. The data redistribution information is used by the replica system to redistribute one or more corresponding replica data subsets among a plurality of replica nodes. | 2010-09-30 |
20100246579 | DISCOVERING MULTICAST ROUTING CAPABILITY OF AN ACCESS NETWORK - Whether an access network supports multicast-based IPTV services from an IPTV service provider is determined. A tone signal encoded with information for the IPTV service provider is used by a terminal to determine whether an access network supports multicast-based IPTV services. The tone signal is also used to determine whether collisions with other IPTV service providers on the access network is probable. Alternatively, a registration request including information for the access network is sent from the terminal to the IPTV service provider. The IPTV service provider uses information in the registration request to determine whether the access network supports multicast-based IPTV services. | 2010-09-30 |
20100246580 | MULTICAST SNOOPING ON LAYER 2 VIRTUAL PRIVATE NETWORK - A network system includes: a core switch; and an edge switch. The edge switch includes: a join message identification unit; and a marking unit. The join message identification unit identifies a join message from among MAC frames from the user network. The marking unit marks mark information to a header of a MAC-in-MAC frame in which the identified join message is encapsulated. The core switch includes: a plurality of input/output ports; a mark identification unit; and a port setup unit. The mark identification unit identifies a MAC-in-MAC frame to whose a header the mark information is marked. The port setup unit associates a multicast group of a join message which is encapsulated in the identified MAC-in-MAC frame, with an input/output port to which the identified MAC-in-MAC frame is input. | 2010-09-30 |
20100246581 | Method and Apparatus for Packet Routing - Methods and apparatus for routing a packet in a network are described. The network has a topology characterized by a hierarchical structure of nodes including n layers. L represents a layer in the structure and is an integer with L=0 representing a lowest layer and L=n−1 representing a highest layer. The method includes receiving at least a packet header of a packet at a first node and based on the packet header, determining whether to transmit the packet to a second node in either layer L, layer L+1, or layer L−1. The packet can be transmitted to the second node as soon as the packet is received at the first node without waiting to receive the entire packet and without copying the packet prior to transmission from the first node. | 2010-09-30 |
20100246582 | Subscriber Access Network Achitecture - A subscriber network architecture includes a packet processing node that communicates with a network backbone and with a plurality of access nodes. The access nodes also communicate with a plurality of subscriber devices. The packet processing node controls Quality of Service (QoS) levels for the subscriber devices, routes user data to subscriber devices based on downstream communication channels of the access nodes and QoS levels, and receives data from subscriber devices (via the access nodes) for forwarding across the network backbone. | 2010-09-30 |
20100246583 | RELAY DEVICE, STATE INFORMING METHOD, AND COMPUTER PROGRAM - A relay device which forwards a packet received from a first device to a second device, the relay device includes a detection unit that detects that the relay device has been in a specified state, a generation unit that generates a packet that contains information for identifying the relay device and information indicating that the relay device is in the specified state when the detection unit detects that the relay device has been in the specified state, and a transmission unit that transmits the generated packet to a specific transmission destination. | 2010-09-30 |
20100246584 | MAINTAINING PACKET ORDER USING HASH-BASED LINKED-LIST QUEUES - Ordering logic ensures that data items being processed by a number of parallel processing units are unloaded from the processing units in the original per-flow order that the data items were loaded into the parallel processing units. The ordering logic includes a pointer memory, a tail vector, and a head vector. Through these three elements, the ordering logic keeps track of a number of “virtual queues” corresponding to the data flows. A round robin arbiter unloads data items from the processing units only when a data item is at the head of its virtual queue. | 2010-09-30 |
20100246585 | Multiple Channel Digital Subscriber Line Framer/Deframer System and Method - The framer, also referred to as the scrambler/Reed-Solomon encoder (SRS), is a part of the transmitter and accepts user and control data in the form of one or more logical channels, partitions this data into frames, adds error correction codes, randomizes the data through a scrambler, and multiplexes logical channels into a single data stream. The multiplexed data is then passed to the constellation encoder as the next step in the formation of the VDSL symbol. The deframer, also referred as the descrambler/Reed-Solomon decoder (DRS), is part of the receiver and performs the inverse function of the framer. Disclosed is a highly configurable hardware framer/deframer that includes a digital signal processor interface configured to provide high level control, a FIFO coupled to data interfaces, a scrambler and CRC generator, a Reed-Solomon encoder, an interleaver, a data interface coupled to a constellation encoder, a data interface coupled to a constellation decoder, a deinterleaver, a Reed-Solomon decoder, descrambler and CRC check, an interface to external data sync, methods for control of configuration of data paths between hardware blocks, and methods for control and configuration of the individual hardware blocks in a manner that provides compliance with VDSL and many related standards. | 2010-09-30 |
20100246586 | SYSTEMS AND METHODS FOR RETRANSMITTING PACKETS OVER A NETWORK OF COMMUNICATION CHANNELS - Systems and methods for transmitting packets over a network of communication channels are provide. A system according to the invention may include first and second nodes in communication with a coax backbone. The first node may further include a retransmission buffer. The system may also include a network access coordinator operative to coordinate access of the nodes to the coax backbone. In a time period at least one first packet is transmitted by the first node to the second node. The first packet may include an indication that retransmission service is applied. The first packet may also include a indication of the length corresponding to the packet. If, during the first time period the packet is not received by the second node, the second node is operative to send a retransmission request to the network access coordinator. | 2010-09-30 |
20100246587 | MULTITOPOLOGY ROUTING METHOD AND SYSTEM - Method and system for routing data streams in a meshed system, in which use is made of multitopology routers each provided with an intelligent module and wherein at least one step is implemented which takes account of the flow objectives associated with a data stream, the intelligent module associated with each multitopology router determines the proportion of resources reserved for the streams established for the various operational importances and a metric of links is calculated for each of the topologies, and each multitopology router driven by its intelligent module determines a routing table for each topology. | 2010-09-30 |
20100246588 | SYSTEM ARCHITECTURE FOR VERY FAST ETHERNET BLADE - The system of the present invention provides data transmission speeds at or in excess of 10 gigabits per second between one or more source devices and one or more destination devices. The system comprises a media access control (MAC) interface to facilitate receipt and transmission of packets over a physical interface. A first field programmable gate array is coupled to the MAC interface and operative to receive packets from the MAC interface and configured to perform initial processing of packets, which are dispatched to a first memory. A second field programmable gate array is operative to retrieve packets from the first memory and configured to compute an appropriate destination, which is used to dispatch packets to a backplane. A third field programmable gate array is provided that is operative to receive packets from the backplane and configured to organize the packets for transmission, which are dispatched to a second memory. A fourth field programmable gate array is coupled to the MAC interface and operative to retrieve packets from the second memory and configured to schedule the transmission of packets to the MAC interface for transmission to one or more destination devices. | 2010-09-30 |
20100246589 | SYSTEMS AND METHODS FOR ACCESSING VOICE TRANSMISSIONS - Various systems and methods for intercepting transmissions are disclosed. In one embodiment, a system is disclosed that includes a media gateway communicably coupled to a soft switch and an acquisition facility. A first processor and a first computer readable medium are associated with the soft switch. The computer readable medium includes instructions executable by the processor to receive a transmission originating from a first communicator and indicating at least a second communicator, and to direct the transmission to the acquisition facility via the media gateway. A second processor and second computer readable medium are included, and the second computer readable medium includes instructions executable by the second processor to direct the transmission from the media gateway to the second communicator such that direction of the transmission to an acquisition facility is obscured from at least the second communicator. Various other systems and methods are also disclosed. | 2010-09-30 |
20100246590 | DYNAMIC ASSIGNMENT OF DATA TO SWITCH-INGRESS BUFFERS - Embodiments of a system that includes a switch and a buffer-management technique for storing signals in the system are described. In this system, data cells are dynamically assigned from a host buffer to at least a subset of switch-ingress buffers in the switch based at least in part on the occupancy of the switch-ingress buffers. This buffer-management technique may reduce the number of switch-ingress buffers relative to the number of input and output ports to the switch, which in turn may overcome the limitations posed by the amount of memory available on chips, thereby facilitating large switches. | 2010-09-30 |
20100246591 | ENABLING LONG-TERM COMMUNICATION IDLENESS FOR ENERGY EFFICIENCY - A network adapter comprises a controller to change to a first mode from a second mode based on a number of transmit packets, sizes of received packets, and intervals between arrivals of the received packets. In one embodiment, the network controller further comprises a memory to buffer received packets, where the received packets are buffered for a longer period in the first mode than in the second mode. | 2010-09-30 |
20100246592 | LOAD BALANCING METHOD FOR NETWORK INTRUSION DETECTION - A load balancing method for network intrusion detection includes the following steps. Packets are received from a client. The data packets include a protocol type and a protocol property. An intrusion detection procedure is loaded on a receiving end. A corresponding request queue is set for each intrusion detection procedure. The request queue is used for storing the data packets. The data packets are processed a separation procedure, and are categorized into data packets of a chain type and data packets of a non-chain type according to the protocol type. The data packets of the chain type are processed by a first distribution procedure. The data packets of the non-chain type are processed by a second distribution procedure. The distribution procedures distribute the data packets to the corresponding request queues according to the protocol property. The corresponding intrusion detection procedure is performed on the data packets in each request queue. | 2010-09-30 |
20100246593 | Steering Data Communications Packets For Transparent Bump-In-The-Wire Processing Among Multiple Data Processing Applications - Steering data communications packets for transparent, bump-in-the-wire processing among multiple data processing applications in a link-level data communications switch, the switch including data communications ports, a port connected to a first data communications network and another port connected to a second data communications network, other ports connected to the data processing applications, the switch also including rules governing the steering, including receiving in the switch from the first network data communications packets directed to the second network, each packet containing a source network address and a destination network address and steering by the switch each packet among the applications and through an egress port, such steering carried out only in accordance with the rules, using neither the source network address of the packet, the destination network address of the packet, nor any link-level identifier of any application. | 2010-09-30 |
20100246594 | Flexibly Integrating Endpoint Logic Into Varied Platforms - In one embodiment, the present invention is directed to an integrated endpoint having a virtual port coupled between an upstream fabric and an integrated device fabric that includes a multi-function logic to handle various functions for one or more intellectual property (IP) blocks coupled to the integrated device fabric. The integrated device fabric has a primary channel to communicate data and command information between the IP block and the upstream fabric and a sideband channel to communicate sideband information between the IP block and the multi-function logic. Other embodiments are described and claimed. | 2010-09-30 |
20100246595 | LINKING CROSS BAR CONTROLLER - A method for transferring data includes connecting N ports of a crossbar to N devices, respectively, where N is an integer greater than one. Inbound data is received at one of the N ports from a respective one of the N devices. Dedicated connections are provided between an input buffer of one of the N ports and N−1 output buffers associated with others of the N ports, respectively. At least one of the N−1 output buffers of the others of the N ports is selected to output outbound data corresponding to the inbound data. The inbound data from the input buffer of one of the N ports is selectively transferred to at least one of the N−1 output buffers of the others of the N ports. | 2010-09-30 |
20100246596 | CONTROL OF PACKET BUFFER USING TOKEN BUCKETS WITH DIFFERENT TOKEN BUCKET SIZES - Control of readout of packets from a packet buffer is disclosed in which equal numbers of tokens are removed and used from token buckets having different bucket sizes; tokens are generated at token rates for the token buckets, wherein each token rate is preset such that the larger the token bucket size, the lower the token rate, and the generated tokens are added to the token buckets; a used-token count is measured for each token bucket, and a stored-token count is measured for each token bucket, with the stored-token count given a negative value if each token bucket is empty; and a number of data packets are read out of the packet buffer, which depends on the measured value of the used-token count for each token buffer. | 2010-09-30 |
20100246597 | Method and apparatus for assigning identifiers to media services - A user assigns a major and minor channel number combination to a media service which does not have such a pre-existing combination, where such a media service is accessed by using such a channel combination without having to resort to the typical means of accessing the media service, such as using a web site URL or radio frequency. Optionally, the invention will automatically update the minor numbers associated with a media service when older versions of the media service become unavailable. | 2010-09-30 |
20100246598 | Performance Customization System and Process for Optimizing xDSL Performance - A system and process for customizing the performance of an xDSL communication system in which a transmitting modem and/or a receiving modem will negotiate a performance parameter for adjustment. | 2010-09-30 |
20100246599 | Apparatus and Method for Bit Remapping in a Relay Enhanced Communication System - An apparatus and method for bit remapping at a relay node in a communication system. In one embodiment, an apparatus includes a processor configured to remap an order of bits of a received signal from a source node to a different order of bits for a transmitted signal to a destination node when the transmitted signal is constructed with a modulation scheme different from the received signal. | 2010-09-30 |
20100246600 | METHOD AND SYSTEM FOR REDUCING HEADER INFORMATION IN COMMUNICATION SYSTEMS - Systems and methods for reducing overhead in a communication system are disclosed. Different frame types are aggregated into an enhanced aggregated frame in response to a determination that the different frames are suitable for transmission within a single reservation period. | 2010-09-30 |
20100246601 | METHOD FOR ADJUSTING SIGNAL SPEED, MEDIA GATEWAY, AND MEDIA GATEWAY CONTROLLER - The present invention relates to the communication filed and discloses a method for adjusting the signal speed, a media gateway (MG), and a media gateway controller (MGC). The method includes: receiving a command request that includes signal speed adjustment information from the MGC, and adjusting the signal speed according to the signal speed adjustment information. The MG includes a receiving module, an adjusting module, and a sending module. The MGC includes a sending module. In the present invention, the media gateway control protocol is extended to enable the MGC to adjust the speed of any signal. | 2010-09-30 |
20100246602 | APPARATUS AND METHOD FOR REMOTE COMMUNICATION AND TRANSMISSION PROTOCOLS - A communication apparatus for remote communication may include a local communication proxy module configured to receive streams from a local communication application module. The streams may be in a form utilizing a first transmission protocol and destined to a remote destination. The local communication proxy module may be configured to add first header information including one or more of the following: a packet sequence identifier, a packet size, a packet type identifier, and additional information related to a packet type identifier. The local communication proxy module may be configured to add second header information. The local communication proxy module may be also configured to form packets and to facilitate sending, utilizing a second transmission protocol, the packets in real-time over a network to a remote communication proxy module. A machine-readable medium and a method are also disclosed. | 2010-09-30 |
20100246603 | METHOD AND SYSTEM FOR QUALITY OF SERVICE SUPPORT FOR ETHERNET MULTISERVICE INTERWORKING OVER MULTIPROTOCOL LABEL SWITCHING - A method and system for maintaining quality of service parameters for transmissions as a native Ethernet service between a first network having a first communication protocol and a second network having a second communication protocol that is different from the first communication protocol. The interworking device includes a first network interface operable to communicate with the first communication network using the first communication protocol, a second network interface operable to communicate with the second communication network using second communication protocol and a processing unit in communication with the first network interface and the second network interface. The processing unit receives a frame from the first network in the first communication protocol, maps parameters corresponding to quality of service parameters in the first communication protocol to quality of service parameters in the second communication protocol and assembles a data packet in the second communication protocol. The assembled data packet includes mapped quality of service parameters. | 2010-09-30 |
20100246604 | METHOD FOR MULTIPLEXING DATA INFORMATION AND CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method for multiplexing a control information stream, and a data information stream comprised of systematic symbols and non-systematic symbols in a wireless mobile communication system is described. The multiplexing method includes mapping the data information stream to a resource area, so that the systematic bit symbols are not mapped to a specific resource area where the control information stream is to be mapped, and mapping the control information stream to the specific resource area. | 2010-09-30 |
20100246605 | ENHANCED VISUAL EXPERIENCE FOR A PARTICIPANT IN A STREAMING EVENT - A method of presenting content from a remote device is provided. Limited bandwidth content, transmitted from a remote device, is received at a local device. The limited bandwidth content is superimposed on enhanced content retrieved by the local device. The limited bandwidth content overlaps with the enhanced content such that the limited bandwidth content is a subset of what is represented by the enhanced content. The limited bandwidth or enhanced content may either be still images or video that is stitched together and displayed at the local device. | 2010-09-30 |
20100246606 | Optimizing the Transmit Power Spectrum Density (PSD) Of A Remotely Deployed Line to Ensure Spectral Compatibility - An apparatus comprising a transmitter at a digital subscriber line (DSL) Cabinet configured to transmit a downstream signal in a subscriber line according to a power spectral density (PSD) configuration, wherein the PSD configuration comprises a cutoff frequency based on a required data-rate of the subscriber line. Also included is an apparatus comprising at least one processor configured to implement a method comprising determining a downstream PSD for a PSD mask for a DSL, determining a cutoff frequency for the PSD profile based on a data-rate required for the DSL, and adjusting a downstream signal power on the DSL according to the PSD mask. Included is a method comprising configuring a plurality of transmitted PSDs for a plurality of Exchange deployed lines and Cabinet deployed lines by varying a plurality of cutoff frequencies corresponding to the transmitted PSDs, wherein the cutoff frequencies are varied by line, with time, or both. | 2010-09-30 |
20100246607 | TIME-DIVISION MULTIPLEXER AND SIGNAL TRANSMISSION APPARATUS - Each of n signal transition detection sections detects a transition of the signal level of at least one of a first input signal or a second input signal corresponding to the signal transition detection section. A time-division control section outputs a control pulse according to a system clock when a signal transition is detected by at least one of the n signal transition detection sections. Each of n output switching sections outputs either the first or the second input signal corresponding to the output switching section as a multiplexed signal according to the control pulse. | 2010-09-30 |
20100246608 | Jitter buffering control for controlling storage locations of a jitter buffer, and a method therefor - A jitter buffer control apparatus has a buffer for storing data included in an input packet transmitted from a telecommunications network, and a jitter buffer controller for controlling the buffer to store the input data into the buffer and take out the stored data from the buffer on the basis of a sequence number included in the input packet in a processing period. When under-running occurs in the buffer, the jitter buffer controller stores input data into the buffer with a storage location skipped which corresponds to the processing period associated with packet loss due to the under-running. | 2010-09-30 |
20100246609 | Semiconductor Lasing Device - The present application provides a semiconductor Fabry-Perot dual mode lasing device having terahertz characteristics resulting in significant advantages over the prior art including for example operation at room temperatures and the absence of re-growth processing requirements. | 2010-09-30 |
20100246610 | Mid-IR Laser Instrument for Analyzing a Gaseous Sample and Method for Using the Same - An optical nose for detecting the presence of molecular contaminants in gaseous samples utilizes a tunable seed laser output in conjunction with a pulsed reference laser output to generate a mid-range IR laser output in the 2 to 20 micrometer range for use as a discriminating light source in a photo-acoustic gas analyzer. | 2010-09-30 |
20100246611 | LASER MICROMACHINING WITH TAILORED BURSTS OF SHORT LASER PULSES - A series of laser pulse bundles or bursts are used for micromachining target structures. Each burst includes short laser pulses with temporal pulse widths that are less than approximately 1 nanosecond. A laser micromachining method includes generating a burst of laser pulses and adjusting an envelope of the burst of laser pulses for processing target locations. The method includes adjusting the burst envelope by selectively adjusting one or more first laser pulses within the burst to a first amplitude based on processing characteristics of a first feature at a target location, and selectively adjusting one or more second laser pulses within the burst to a second amplitude based on processing characteristics of a second feature at the target location. The method further includes directing the amplitude adjusted burst of laser pulses to the target location. | 2010-09-30 |
20100246612 | MODE-LOCKED LASER - A mode-locked laser includes a two-electrode semiconductor laser ( | 2010-09-30 |
20100246613 | SEMICONDUCTOR LASER, METHOD FOR GENERATING LASER BEAM AND METHOD FOR REDUCING A SPECTRAL LINE-WIDTH OF LASER BEAM - A semiconductor laser is provided capable of generating very narrow laser beams and having stable characteristics, a method for generating the laser beams and a method for reducing a spectral line-width of the laser beams. The semiconductor laser includes a semiconductor active layer, a photonic crystal optical waveguide forming a periodic structure of two-dimensional refractive index within a plane perpendicular to a semiconductor laminate direction directly or indirectly connected to the semiconductor active layer; and an optical cavity that contains the semiconductor active layer and the photonic crystal optical waveguide and oscillates light that is generated from the semiconductor active layer and is guided through the photonic crystal optical waveguide as laser. | 2010-09-30 |
20100246614 | WAVELENGTH VARIABLE LIGHT SOURCE SYSTEM - There is provided a wavelength variable light source system capable of changing wavelength and intensity of output signal light and of improving preset accuracy and stability of the wavelength and strength of the output signal light. The system determines the both or either one of a target value for controlling wavelength and a target value for controlling intensity of output signal light of a wavelength variable light source by correlating a combination of the target wavelength and the target light output intensity specified from a higher-level device and controls operation states of the wavelength variable light source so that output values of monitoring circuit s for monitoring the operation state of the wavelength variable light source converge to the target values. | 2010-09-30 |
20100246615 | INTRACAVITY HARMONIC GENERATION USING A RECYCLED INTERMEDIATE HARMONIC - Lasers configured for intracavity harmonic generation of second and higher order harmonic laser beam energy include mode-matching optics, such as a curved mirror, for recycling an unused portion of an intermediate harmonic laser beam energy (e.g., second harmonic laser beam energy) to improve higher order harmonic laser beam energy generation efficiency (e.g., third or higher order harmonic laser beam energy generation efficiency) without sacrificing beam quality of the higher order harmonic laser beam energy. The curved mirror may be positioned out of a resonant laser cavity of the laser. A radius of curvature and a position of the curved mirror are selected so that a beam radius and a beam divergence of the recycled second harmonic laser beam energy are essentially the same as a beam radius and a beam divergence of incoming second harmonic laser beam energy everywhere along a beam path of the incoming second harmonic laser beam. | 2010-09-30 |
20100246616 | CAVITY-DUMPED PULSED SOLID-STATE LASER WITH VARIABLE PULSE-DURATION - In a cavity-dumped, repetitively-pulsed, solid-state laser cavity dumping is protracted over a predetermined time longer than a round-trip time of the resonator of the laser. The cavity dumping is effected by a Pockels cell optical switch. During a dumping period a voltage applied to the Pockels cell falls in a predetermined time. Varying the voltage fall-time varies the duration of pulses provided by the laser, independent of the pulse-repetition frequency. | 2010-09-30 |
20100246617 | NARROW SURFACE CORRUGATED GRATING - Narrow surface corrugated gratings for integrated optical components and their method of manufacture. An embodiment includes a grating having a width narrower than a width of the waveguide on which the grating is formed. In accordance with certain embodiments of the present invention, masked photolithography is employed to form narrowed gratings having a desired grating strength. In an embodiment, an optical cavity of a laser is formed with a reflector grating having a width narrower than a width of the waveguide. In another embodiment an integrated optical communication system includes one or more narrow surface corrugated gratings. | 2010-09-30 |
20100246618 | EXTERNAL RESONATOR-TYPE WAVELENGTH TUNABLE LASER DEVICE - The present invention provides an external resonator-type wavelength tunable laser device that can properly fulfill a wavelength tuning function even with the use of a planar wavelength tunable reflector involving a considerable level of residual reflection. The external resonator-type wavelength tunable laser device includes a planar reflection structure enabling a reflection spectral peak wavelength to be varied and a semiconductor element as a semiconductor gain medium. The semiconductor gain medium is composed of a multiple quantum well in which product Γ·L of optical confinement constant Γ and semiconductor gain medium length L (μm) of a gain layer is at least 25 μm and at most 40 μm and in which gain peak wavelength λ0 (nm) observed during carrier injected with a maximum modal gain equal to an internal loss of the semiconductor gain medium is larger than −3·ΔR/2+(λc+35) and smaller than (−(Γ·L)/7+8)·ΔR+(−(Γ·L)+λc+45). Here, ΔR (dB) denotes a reflectance difference, and he (nm) denotes a wavelength at a center of an operating wavelength range of the wavelength tunable laser device. | 2010-09-30 |
20100246619 | Eye safe dermatological phototherapy - A method and apparatus are disclosed for improving bodily safety during exposure to an intense pulsed light source by diverging the light, such as with a diffuser. At a first position of the distal end of the light source the energy density of exit light from the distal end is substantially equal to the energy density of the light required for desired applications, such as effecting an aesthetic improvement without appearance of purpura or scarring, and at a second position of the distal end the radiance of the light emitted therefrom is significantly less than the radiance of the intense pulsed light. Eye safety is further enhanced by attaching at least one element of adjustable opacity to the handpiece of the light source, so that subcutaneously backscattered light may be absorbed by the at least one element. | 2010-09-30 |
20100246620 | LASER DEVICE - A laser device includes: an optical modulator that is optically coupled to a semiconductor laser mounted on a first mounting portion; a second mounting portion that is separately away from the first mounting portion; a bridge that couples the first mounting portion and the second mounting portion; a driver IC that is mounted on the second mounting portion and drives the optical modulator through a transmission pathway provided on the bridge; and a capacitor that is provided on the bridge and is coupled to the transmission pathway. | 2010-09-30 |
20100246621 | LIGHT SOURCE CONTROL APPARATUS AND LIGHT SOURCE APPARATUS - A light source control apparatus includes a laser having a wavelength that varies depending on temperature; a wavelength monitor that monitors the wavelength of light output from the laser; a temperature controller that controls the temperature of the laser based on an output of the wavelength monitor; a temperature monitor that monitors the temperature of the laser; and a control manager that stops control by the temperature controller if a variation amount per unit time of the temperature monitored by the temperature monitor exceeds a threshold value. | 2010-09-30 |
20100246622 | BI-SECTION SEMICONDUCTOR LASER DEVICE, METHOD FOR MANUFACTURING THE SAME, AND METHOD FOR DRIVING THE SAME - A method for manufacturing a bi-section semiconductor laser device includes the steps of (A) forming a stacked structure obtained by stacking, on a substrate in sequence, a first compound semiconductor layer of a first conductivity type, a compound semiconductor layer that constitutes a light-emitting region and a saturable absorption region, and a second compound semiconductor layer of a second conductivity type; (B) forming a belt-shaped second electrode on the second compound semiconductor layer; (C) forming a ridge structure by etching at least part of the second compound semiconductor layer using the second electrode as an etching mask; and (D) forming a resist layer for forming a separating groove in the second electrode and then forming the separating groove in the second electrode by wet etching so that the separating groove separates the second electrode into a first portion and a second portion. | 2010-09-30 |
20100246623 | SEMICONDUCTOR LASER DEVICE - A semiconductor laser according to the present invention comprises a λ/2 dielectric film (λ: in-medium wavelength of a dielectric film, for example, SiO | 2010-09-30 |
20100246624 | NITRIDE-BASED SEMICONDUCTOR LIGHT-EMITTING DEVICE, NITRIDE-BASED SEMICONDUCTOR LASER DEVICE, NITRIDE-BASED SEMICONDUCTOR LIGHT-EMITTING DIODE, METHOD OF MANUFACTURING THE SAME, AND METHOD OF FORMING NITRIDE-BASED SEMICONDUCTOR LAYER - A nitride-based semiconductor light-emitting device capable of suppressing complication of a manufacturing process and reduction of luminous efficiency is obtained. This nitride-based semiconductor light-emitting device ( | 2010-09-30 |
20100246625 | NITRIDE SEMICONDUCTOR LASER - A nitride semiconductor surface-emitting laser includes a two-dimensional photonic crystal layer having a resonant mode in an in-plane direction. The surface-emitting laser includes an active layer, the two-dimensional photonic crystal layer, a semiconductor layer, and an electrode in this order. The two-dimensional photonic crystal layer contains p-type conductive In | 2010-09-30 |
20100246626 | SIDE-EMITTING LED LIGHT SOURCE FOR BACKLIGHTING APPLICATIONS - This invention relates to a side-emitting light device comprising two sub-assemblies which are optically bonded together. Each sub-assembly comprises a substrate, at least one light source disposed on the substrate, and a luminescent plate optically bonded with the at least one light source. The light source emits light of a wavelength capable of exciting luminescence light from the luminescent plate. The two sub-assemblies are arranged having the free surface of the luminescent plates facing each other. The side-emitting light device is for instance applicable for light sources comprising naked dies arranged with Thin Film Flip Chip (TFFC) technique or laser diodes. | 2010-09-30 |
20100246627 | OPTICAL SEMICONDUCTOR DEVICE - An optical semiconductor device includes: a beam splitter that splits an input optical axis into a first split axis having a first split angle and a second split axis having a second split angle larger than the first split angle; a first unit that is located on the first split axis of the beam splitter and has one or more optical components, an interval between a more distant end of the first unit and the beam splitter having a first length; a second unit that is located on the second split axis of the beam splitter and has one or more optical components, an interval between a more distant end of the second unit and the beam splitter having a second length larger than the first length; and an optical semiconductor element that has a first outputting end having a first output axis coupled optically to the input optical axis of the beam splitter, a second outputting end having a second output axis, and optical gain, the optical semiconductor element being inclined so that the second output axis is arranged away to a side of the second split axis from the first output axis. | 2010-09-30 |
20100246628 | SEMICONDUCTOR LIGHT-EMITTING DEVICE - Disclosed is a semiconductor light-emitting device including a package having a light outlet, a semiconductor laser diode disposed in the package and radiating a light having a first wavelength falling within a range of ultraviolet ray to visible light, and a visible-light-emitter containing a phosphor which absorbs a light radiated from the semiconductor laser diode and emits a visible light having a second wavelength differing from the first wavelength, the visible-light-emitter being disposed on an optical path of the laser diode and a peripheral edge of the visible-light-emitter being in contact with the package. | 2010-09-30 |
20100246629 | MULTIPLE-WAVELENGTH LASER DEVICE - A multiple-wavelength laser device includes a first semiconductor laser chip having two modulable unit laser portions, outputs of the unit laser portions being optically coupled to a single output optical axis; a second semiconductor laser chip having two or less than two modulable unit laser portions, outputs of the unit laser portions being optically coupled to a single output optical axis; an optical coupler that combines the output optical axes of the first and the second semiconductor laser chips; and a plurality of drive current pathways or a plurality of signal transmission pathways that are coupled to each of the unit laser portions of the first and the second semiconductor laser chips with a connection conductor. | 2010-09-30 |
20100246630 | Thermocouple temperature sensor with connection detection circuitry - An assembly includes a thermocouple, a cold junction sensor, and a circuit. The thermocouple has a process end and a cold junction end. The cold junction end has first and second cold junction terminals. The cold junction sensor is supported near the cold junction end and configured to measure temperature at the cold junction end. The circuit is electrically connected to the cold junction sensor and to the first and second cold junction terminals. The circuit is configured to produce a thermocouple signal as a function of voltage across the first and second cold junction terminals and to produce a cold junction sensor signal as a function of temperature of the cold junction end as measured by the cold junction sensor. The circuit is further configured to calculate a correlation between the thermocouple signal and the cold junction sensor signal. | 2010-09-30 |
20100246631 | BLACKBODY FITTING FOR TEMPERATURE DETERMINATION - A temperature monitoring technique for collecting radiation intensity (blackbody emission) across a broad wavelength range. A solid state spectrometer ( | 2010-09-30 |
20100246632 | THERMAL FATIGUE TESTING DEVICE AND RECORDING MEDIUM RECORDED WITH A PROGRAM - A thermal fatigue testing device that includes a gas cooling component, a tube member, and a heat generating body is provided. The gas cooling component cools a blown gas to a predetermined temperature or less, and that is provided with a heat insulating member at an outer side surface thereof. The tube member has a gas flow path formed therein from a first end to a second end, is provided at an outer side surface thereof with a heat radiating portion from the second end to a first intermediate portion, and is connected with the gas cooling component at the first end side. A test body is arranged at the second end side. The heat generating body is provided in the gas flow path between the first end and a second intermediate portion and heats a gas flowing through the gas flow path. | 2010-09-30 |
20100246633 | TESTING APPARATUS FOR COMPUTER MOTHERBOARD DESIGN - A testing apparatus for a motherboard design includes a plurality of electrical elements. The testing apparatus includes a body, a plurality of heat source modules, and a power source terminal. The plurality of heat source modules is positioned on the body and produce heat to simulate the electrical elements of the motherboard. The power source terminal is connected to the plurality of heat source modules via cables and connected to a power supply. When the power supply is turned on, the power supply provides working voltages to the heat source modules to signal the heating source modules to simulate the heat production of the electrical elements of the motherboard design. | 2010-09-30 |
20100246634 | Acquisition of spreading factors (SFS) of multiple transmitted signals in code division multiple access system - A method for successive interference cancellation in code division multiple access (CDMA) systems is provided that uses variable interferer weights. This method allows interfering signals to be cancelled in order to recover a transmitted data signal. This method involves receiving the data signal subject to interference from at least one interfering signal. A first interfering signal is identified. Then an interferer weight coefficient associated with the first interfering signal is generated based on its signal strength and SF upon acquisition of the SF. This SF may be monitored such that the Interferer weight may be adjusted when the SF changes based on the detected changes. This allows the first interfering signal to be cancelled from the received data signal using the interferer weight coefficient. These processes may then be reiterated for other interfering signals. It is then possible to recover the transmitted data signal from the received data signal. | 2010-09-30 |
20100246635 | Methods and apparatus for narrow band interference detection and suppression in ultra-wideband systems - An exemplary method is disclosed to accurately estimate the center frequency of a narrow-band interference (NBI). The exemplary method uses multi-stage autocorrelation-function (ACF) to estimate an NBI frequency. The exemplary method allows an accurate estimation of the center frequency of NBI in an Ultra-Wideband system. A narrow band interference (NBI) estimator based on such a method allows a low complexity hardware implementation. The exemplary method estimates the frequency in multiple stages. Each stage performs an ACF operation on the received signals. The first stage gives an initial estimation and the following stages refine the estimation. The results of all stages are combined to produce the final estimation. An apparatus based on such a multi-stage narrow band interference frequency detector is also disclosed to improve the accuracy by combining various filters with the detector. | 2010-09-30 |
20100246636 | Detecting the Presence of Spread Spectrum Signals - The presence of spread spectrum signals in a given frequency range is detected in a receiver by receiving a signal; determining for a measurement frequency an indication signal; and using it as an indication of the presence of spread spectrum signals having a carrier frequency equal to said measurement frequency. An in-phase signal and a quadrature signal are provided by mixing the received signal with an oscillator signal having said measurement frequency; at least one of these signals is phase shifted; a sum signal and a difference signal are generated; and the sum signal is multiplied by the difference signal and low pass filtered. In this way a method and a circuit of detecting the presence of spread spectrum signals in a given frequency range are provided, which are simple and fast enough to be used in low-cost cognitive radios. | 2010-09-30 |
20100246637 | Wireless communication device, wireless communication system, and method for detecting receive timing of direct wave - A wireless communication device and method are capable of detecting a receive timing of a direct wave at higher precision without increasing transmit power. A signal receiver receives a signal having a center frequency changed in a predetermined rule at predetermined time intervals. A time-frequency transformer transforms the received signal from a time domain to a frequency domain. A filter removes frequency-domain signal components unused during reception, based on the predetermined rule, from the frequency-domain signal. A reverse modulator performs a reverse modulation process on the remaining signal components. A signal adder generates an added signal by performing accumulative addition on the signal components that underwent the reverse modulation process in the reverse modulator for a predetermined period. A direct wave arrival time determiner determines an arrival time of a direct wave according to an impulse response obtainable from an output of the frequency-time transformer. | 2010-09-30 |
20100246638 | Antenna Selection with Frequency-Hopped Sounding Reference Signals - Embodiments of the invention describe a method for antenna selection (AS) in a wireless communication network. The network includes a base station and a transceiver, wherein the transceiver has a set of antennas, and wherein the transceiver is configured to transmit a frequency-hopped sounding reference signal (SRS) from a subset of antennas at a time. The base station determines a type of a training transmission based on a number of the subbands and a number of subsets in the set of antennas, and transmits an instruction including the type to the transceiver. | 2010-09-30 |
20100246639 | TIME-HOPPING SEQUENCE FOR BURST MODE COMMUNICATIONS - A method consisting of determining, by a symbol mapper, whether a previous burst position is below a threshold, wherein the previous burst position defines a location within a previous symbol. A determination that the previous burst position is below the threshold causes generating, by the symbol mapper, a random number in a complete set, the random number defines a current burst position, the current burst position defines a location within a current symbol and sending or receiving a value in the current burst position. A determination that the previous burst position is above the threshold causes generating, by the symbol mapper, a random number in a reduced set, the random number defines a modified current burst position, the modified current burst position defines a location within the current symbol and sending or receiving a value in the modified current burst position. | 2010-09-30 |
20100246640 | FEEDBACK OF DECODED DATA CHARACTERISTICS - A method for successive interference cancellation in code division multiple access (CDMA) systems is provided that uses variable interferer weights. This method allows interfering signals to be cancelled in order to recover a transmitted data signal. This method involves receiving the data signal subject to interference from at least one interfering signal. A first interfering signal is identified. Then an interferer weight coefficient associated with the first interfering signal is generated. This allows the first interfering signal to be cancelled from the received data signal using the interferer weight coefficient. These processes may then be reiterated for other interfering signals. It is then possible to recover the transmitted data signal from the received data signal. | 2010-09-30 |
20100246641 | TIME-FREQUENCY CODE SPREADING METHOD AND APPARATUS IN OFDMA SYSTEM - The present invention provides a time-frequency code spreading method in an OFDMA system. The method includes: converting a transmission message into one or more modulating signal vectors, and each bit of the transmission message is spread onto all vector elements of a modulating signal vector; mapping one or more modulating signal vectors to a set of time-frequency grids, wherein in an OFDMA time-frequency plane, two time-frequency grids to which any two vector elements in each modulating signal vector are mapped do not have the same frequency location or time location. In addition, the present invention also provides a time-frequency code spreading apparatus in an OFDMA system. | 2010-09-30 |
20100246642 | MULTI-ACCESS HYBRID OFDM-CDMA SYSTEM - In one aspect of a multiple-access OFDM-CDMA system, the data spreading is performed in the frequency domain by spreading each data stream with a respective spreading code selected from a set of available spreading codes. To support multiple access, system resources may be allocated and de-allocated to users (e.g., spreading codes may be assigned to users as needed, and transmit power may be allocated to users). Variable rate data for each user may be supported via a combination of spreading adjustment and transmit power scaling. Interference control techniques are also provided to improve system performance via power control of the downlink and/or uplink transmissions to achieve the desired level of performance while minimizing interference. A pilot may be transmitted by each transmitter unit to assist the receiver units perform acquisition, timing synchronization, carrier recovery, handoff, channel estimation, coherent data demodulation, and so on. | 2010-09-30 |
20100246643 | SYSTEM AND METHOD FOR HUMAN BODY COMMUNICATION USING LIMITED PASSBAND - Provided are a system and method for human body communication using a limited passband. The system includes a transmission frame generating unit for human body communication which generates a transmission frame for human body communication based on data information including user identification (ID) and data scrambled into an orthogonal code generated by the user ID; a symbol mapping unit for symbolizing the generated transmission frame for human body communication according to a predetermined modulating method; a spreading unit for spreading the symbol outputted in the symbol mapping unit; a waveform generating unit for generating a baseband signal whose band is limited to a predetermined range with respect to the data spread in the spreading unit; and a middle band transmitting unit for modulating the baseband signal into a predetermined limited passband signal. | 2010-09-30 |
20100246644 | SYSTEMS, COMPUTER PROGRAM PRODUCTS, AND METHODS USING CARRIER PHASES TO DETECT MULTIPATH SIGNALS - A multipath detector includes an RF module receiving multiple signals, and a correlator module receiving the signals from the RF module. The correlator module correlates the signals to create a composite ACF, and produces samples of the composite autocorrelation function (ACF). The samples are time delayed relative to each other. The multipath detector also includes a carrier phase processor that receives the samples and estimates carrier phases associated with each of the samples. The carrier phase processor employs the estimated carrier phases to determine if one of the signals is subject to a multipath delay. | 2010-09-30 |
20100246645 | APPARATUS FOR AND METHOD OF MAKING PULSE-SHAPE MEASUREMENTS - A receiver includes a pre-correlation filter that forms an image of the average chip shape of a received signal over a specified period of time. The filter includes an array of complex accumulation registers that accumulate measurements that are associated with signal samples from specific ranges of locations, or code chip phase angles, along a spread-spectrum chip. Using the accumulated measurements, the receiver estimates the location of the chip transitions in a direct path signal component. The receiver may thereafter change the starting points, sizes and numbers of ranges, such that the accumulation registers accumulate more detail from the chip edges. The receiver in addition may use the accumulated measurements from selected registers and/or selected groups of registers, to produce the correlation values that are needed to perform one or more correlation techniques and/or one or more multipath mitigation techniques. As appropriate, the sizes and/or starting points of the bins, and/or the selections of the bins for the various groupings may be altered, to change the spacings, locations, and so forth to which correlation values correspond. | 2010-09-30 |
20100246646 | MULTI-BIT DIGITAL SIGNAL ISOLATOR - The invention is directed to a multi-bit digital signal isolation system including a plurality of micro-transformers, each having a primary winding and a secondary winding, a transmitter circuit receiving a multi-bit signal and transmitting an encoded logic signal across the plurality of micro-transformers corresponding to the multi-bit signal, the primary winding of each micro-transformer receiving a signal corresponding to one of at least three possible states, and a receiver circuit receiving the encoded logic signal from the secondary windings of the plurality of transformers, decoding the encoded logic signal and reconstructing the received multi-bit signal based upon the decoded signal. | 2010-09-30 |
20100246647 | ACTIVE BIDIRECTIONAL SPLITTER FOR SINGLE ENDED MEDIA - An active bidirectional splitter ( | 2010-09-30 |
20100246648 | External AC-DC Coupling for Communication Interfaces - A power line communication device comprises a plurality of transformers in series. These transformers are used to increase the voltage of a digitally encoded signal in a stepwise fashion prior to being coupled into a power line. While a transmit path includes at least a first transformer and a second transformer in series, a receive path may include only one of these two transformers. For example a receive path may include only the first transformer, or include the first transformer and a third transformer. The net ratio of voltage increase and decrease may be different in the transmit and receive paths. Additionally, the communication interface can be disposed within an AC/DC converter or distributed among an AC/DC converter and an appliance attached thereto. | 2010-09-30 |