05th week of 2009 patent applcation highlights part 31 |
Patent application number | Title | Published |
20090028113 | RADIO NETWORK CONTROLLER, MOBILE STATION, AND MOBILE COMMUNICATION METHOD - A radio network controller comprises a cell selector configured to select a cell to use by a mobile station after data reception, and a mobile station controller configured to control the mobile station to communicate by radio using the cell selected by the cell selector after the data reception. | 2009-01-29 |
20090028114 | STAGGERING FORWARD AND REVERSE WIRELESS CHANNEL ALLOCATION TIMING - An apparatus and method for staggering forward and reverse channel time slot allocation in a wireless communication allows a wireless communication unit, such as a base station processor or a subscriber access unit, to transmit a return message in less than a full time slot interval. Forward and reverse channel allocation occurs as a cycle of time slots occurring at periodic timing intervals. Transmission of a wireless frame carrying a message payload occurs at the beginning of the time slot. Since the forward and reverse channel allocation cycles need not be concurrent, or in phase, these cycles may be staggered with respect to each other. By staggering the forward and reverse channel allocation timing interval, the return message is sent after only a portion of a full timing interval, rather than being delayed up to one complete timing interval. | 2009-01-29 |
20090028115 | HYBRID WLAN-GSM DEVICE SYNCHRONIZATION TO ELIMINATE NEED FOR COSTLY FILTERS - A multi-mode WLAN-GSM communications device ( | 2009-01-29 |
20090028116 | DYNAMIC VLANS IN WIRELESS NETWORKS - Systems and methods are described for managing a wireless network. Packets addressed to subscriber stations may be assigned a tag based on the base station at which the packet is received and the base station at which the subscriber station first entered the network. The tag can identify a media access address associated with subscriber equipment accessible through the subscriber station and an IP address associated with the subscriber equipment. The tag may be obtained from a table linking each of a plurality of virtual local area networks to one or more subscriber stations previously registered at a network base station. | 2009-01-29 |
20090028117 | PROVIDING NETWORK CONNECTIVITY AND SERVICE STATE INFORMATION TO APPLICATION SERVERS | 2009-01-29 |
20090028118 | METHODS, APPARATUSES AND SYSTEMS FACILITATING MANAGEMENT OF AIRSPACE IN WIRELESS COMPUTER NETWORK ENVIRONMENTS - Methods, apparatuses and systems facilitating the management of wireless computer network environments and the detection of rogue and other devices that may affect the performance and/or security of the wireless computer network. The present invention enables accurate and cost effective WLAN airspace mapping. In one embodiment, the present invention allows any conforming access point the ability to routinely scan its airspace, collect data on all operating frequencies and report this information back to a management platform. In one embodiment, the management and reporting functionality described herein uses a standards-based vehicle, such as Simple Network Management Protocol (SNMP). In one embodiment, the present invention facilitates isolation of rogue wireless devices affecting the computer network environment and effective decision-making as to management of the detected device. The present invention also allows network administrators to optimize the configuration of the wireless network environment for performance and security. | 2009-01-29 |
20090028119 | Method of managing transmission within a wireless communications network - The method includes sending a request for permission to transmit by each ready node in the wireless network. Each ready node is a node of the wireless network ready to transmit, each request identifies a node in the network that is the destination, and each request is sent over a control channel. An iterative process based on priorities determined for the ready nodes is then performed to determine which ready nodes to block from transmission and which ready nodes to clear for transmission. Transmissions are sent over a payload channel from ready nodes in the clear to transmit state. | 2009-01-29 |
20090028120 | METHOD AND APPARATUS FOR PROVIDING NEIGHBORHOOD AP INFORMATION IN A WIRELESS LAN SYSTEM - A method of managing communications in a wireless Local Area Network (WLAN) system providing a plurality of channels and comprising an information server for storing the neighborhood access point (AP) information. The method comprises scanning a plurality of channels to detect at least one channel used by a first AP, generating neighborhood AP information including channel information for identifying at least one of the detected channels, and transmitting the neighborhood AP information to an information server, wherein said scanning is performed by a second AP and wherein the first AP is a neighboring AP of the second AP. | 2009-01-29 |
20090028121 | WIRELESS LAN TERMINAL, A WIRELESS LAN SYSTEM, A MAC ADDRESS LEARNING METHOD AND A COMPUTER PROGRAM PRODUCT - A wireless LAN terminal includes a wired LAN interface, a wireless LAN interface and a bridge unit. The bridge unit detects that a terminal apparatus connected with the wired LAN interface moves to a position under different wireless LAN equipment and learns a MAC address of the terminal apparatus which moves. | 2009-01-29 |
20090028122 | WIRELESS LAN TERMINAL ALLOWING ANOTHER PROCESSING IN ITS WAITING OR IDLE STATE - Wireless LAN (Local Area Network) terminals are provided for executing a four-way handshaking procedure when they communicate with one another directly in a wireless ad hoc network mode. Each of the wireless LAN terminals may include a state processor which takes action in accordance with a communication state of its own wireless LAN terminal, and, upon sending a message during the four-way handshaking procedure, issues sending-completion information that indicates completion of the sending. The terminal may further include a state manager which, based on the sending-completion information, causes the communication state to be in a waiting state so that even during the four-way handshaking procedure, a message in processing procedure other than the message sent during the four-way handshaking procedure can be sent and received. | 2009-01-29 |
20090028123 | SYSTEM FOR PERMITTING CONTROL OF THE PURGING OF A NODE B BY THE SERVING RADIO NETWORK CONTROLLER - A system and method which permit the RNC to control purging of data buffered in the Node B. The RNC monitors for a triggering event, which initiates the purging process. The RNC then informs the Node B of the need to purge data by transmitting a purge command, which prompts the Node B to delete at least a portion of buffered data. The purge command can include instructions for the Node B to purge all data for a particular UE, data in one or several user priority transmission queues or in one or more logical channels in the Node B, depending upon the particular data purge triggering event realized in the RNC. | 2009-01-29 |
20090028124 | Symbol-Level Adaptation Method for Equalizer Coefficients, Memory, Equalizer and Receiver for Implementing the Method - A symbol-level adaptation method to adapt at least one coefficient of an equalizer, wherein the method comprises the steps of:
| 2009-01-29 |
20090028125 | METHOD FOR OPERATING ENHANCED RLC ENTITY AND RNC ENTITY FOR WCDMA AND SYSTEM THEREOF - A method for operating an RLC entity and a MAC entity in a Universal Mobile Telecommunications System (UMTS), the European IMT-2000 system. A format of a MAC-has PDU is optimized in a MAC-hs entity, so that a large number of users can be supported with using less resources when a VoIP service is provided in one cell. | 2009-01-29 |
20090028126 | METHOD AND APPARATUS FOR POLLING IN A WIRELESS COMMUNICATION SYSTEM - A data packet communication system employs radio link control (RLC) transmission between a transmitter and a receiver with an Automatic Repeat Request (ARQ) arrangement whereby polling of the receiver is accomplished with reduced amount of redundantly transmitted data, such as between an access node and terminal. Upon a polling event, such as emptying of a transmission buffer of the transmitter, expiration of a polling timer, or reaching a radio link control (RLC) protocol data units (PDUs) count threshold, the transmitter sends a polling command to the receiver. This polling command is smaller than any of the RLC PDUs by resegmenting to a variably sized PDU sending a reduced amount of data. With evolving communication standards tending toward larger PDUs, such as in excess of a kilobyte for HSPA+ (High-Speed Packet Access Evolution) and 3GPP LTE (Long Term Evolution), this inefficiency can be of increasing impact. | 2009-01-29 |
20090028127 | METHODS AND APPARATUS FOR PROVIDING COMPUTATIONAL LOAD ALLOCATION IN A NETWORK ENVIRONMENT - Methods and apparatus for providing computational load allocation in a network environment. In an aspect, a method is provided that includes obtaining an announcement associated with at least one of foreground and background services, allocating available resources to process selected foreground services, and calculating remaining resources based on the announcement. The method also includes determining whether the remaining resources are enough to process at least one background service, and allocating the remaining resources to process the at least one background service if it is determined that the remaining resources are enough. An apparatus is also provided that includes a receiver configured to obtain an announcement associated with at least one of foreground and background services. The apparatus also includes allocation logic to allocate available resources, calculate remaining resources, determine whether the remaining resources are enough to process background services, and allocate the remaining resources to process background services. | 2009-01-29 |
20090028128 | BROADCAST SUPERFRAME WITH VARIABLE REUSE AND INTERFERENCE LEVELS FOR A RADIO COMMUNICATIONS SYSTEM - A method and apparatus are provided to enhance the efficiency of reuse of a broadcast channel. In one embodiment, the invention includes sending a first burst of a broadcast channel from a broadcast channel radio subject to a first reuse factor, and sending a second burst of the broadcast channel from the broadcast channel radio subject to a second reuse factor. In another embodiment, the invention includes broadcast channel structure with a primary segment having a first reuse factor, a plurality of secondary segments having a second reuse factor greater than the first reuse factor. | 2009-01-29 |
20090028129 | Rate matching for hybrid ARQ operations - A method of rate matching process of the hybrid Automatic Repeat reQuestion (HARQ) operation in which coded bits are selected for a transmission depends on whether the transmission is a first transmission of a new packet or a retransmission of an existing packet. In downlink of long term evolution (LTE) system, a downlink grant message is transmitted along with the packet data transmission. The grant message may also contain the redundancy version (RV). A new data indicator (NDI) is introduced to indicate the start of a new packet. The improved method of rate matching may be implanted into either a transmitter or a receiver. | 2009-01-29 |
20090028130 | CALL IDENTIFICATION MECHANISM FOR MULTI-PROTOCOL TELEPHONES - In one embodiment, a system identifies an Internet Protocol (IP) device as a calling party for calls from either a Voice over Internet Protocol (VoIP) portion or a cellular portion of a multi-protocol phone. As a result, return calls to the multi-protocol phone are always sent through an IP device to allow call handling or Single Number Reach (SNR) functionality for the return calls. | 2009-01-29 |
20090028131 | TEST AUTOMATION FOR AN INTEGRATED TELEPHONY CALL MANAGEMENT SERVICE - A test application includes instructions for configuring a digital cross connect. A first modem and a second modem are each connected to at least one telecommunications network and a digital cross connect. An integrated telephony call management service (ITCMS) client includes computer-executable instructions stored on a computer-readable medium included in the test computer. | 2009-01-29 |
20090028132 | System and method for transferring interaction metadata messages over communication services - System and method for transmitting interaction metadata messages, for example, computer telephony integration (CTI) messages, from one or more network end points and/ox from a central network device to a recording system using a light-weight interaction metadata protocol, for example, a light-weight CTI protocol, over one or more communication services. | 2009-01-29 |
20090028133 | Method for providing hysteresis to fluctuating signaling link - A signaling node within a telecommunications network automatically detects that a signaling link is fluctuating in and out of service and provides hysteresis to the fluctuating signaling link. The signaling node includes a link controller that monitors the state(s) of the signaling link over a time period and a link blocking module that blocks the signaling link from carrying SS7 traffic when the signaling link fluctuates between a failed state and a stable state over the time period. | 2009-01-29 |
20090028134 | Management and Control of Call Center and Office Telephony Assets - Call center and office telephony assets, including telephones, headsets, on-line indicators (OLI), and handset lifters, are managed and controlled over a network by a remote computer system. Each asset has associated therewith one or more network addresses, in some cases the network addresses mapped from an electronic identifier stored within the particular asset or determined by a proxy. In one embodiment, an asset's network address is mapped from the asset's unique media access control (MAC) address. The computer system communicates with the assets over the network to manage and control the assets. | 2009-01-29 |
20090028135 | SYSTEM AND METHOD FOR UNIFIED COMMUNICATIONS THREAT MANAGEMENT (UCTM) FOR CONVERGED VOICE, VIDEO AND MULTI-MEDIA OVER IP FLOWS - A method and system for unified communications threat management (UCTM) for converged voice and video over IP is disclosed. A computer-implemented method for threat management receives an incoming packet. The incoming packet is broken into sub-packets and fed to a plurality of packet processing engines. Each packet processing engine inspects the sub-packets and annotate the sub-packets with meta-data. The annotated sub-packets are combined and processed by a plurality of application engine to generate a processed packet. The processed packet is classified and stored in a database. | 2009-01-29 |
20090028136 | Method And Apparatus For Controlling Preset Events - A method and apparatus for controlling preset events. The method includes: setting a preset event for a set object on a media gateway controller and a media gateway respectively; judging whether the preset event needs to be monitored continuously on the set object; if so, holding the preset event to be in the active state on the set object; otherwise, no longer holding the preset event to be in the active state on the set object. The apparatus includes a judging module, a controlling module and a canceling module. | 2009-01-29 |
20090028137 | METHOD AND APPARATUS FOR STORING AND ACTIVATING UNIVERSAL RESOURCE LOCATORS AND PHONE NUMBERS - A method and apparatus for enabling subscribers to store telephone numbers and/or URLs embedded in streaming video contents associated with a video session being shown on video display devices into address books hosted in the network. Subscribers can then access these phone numbers to place phone calls using information stored in the network address books by activating a voice session. Similarly, subscribers can also access URLs to browse websites using URLs stored in the network address books by activation a web session. | 2009-01-29 |
20090028138 | Integrated internet telephony system and signaling method thereof - A VoIP network includes an integrated Internet telephony system having an all-in-one architecture in which an application layer gateway function, a signaling processing function and a media processing function are integrated. The integrated Internet telephony system performs ALG processing on a packet bound to a first address and processes a signaling message bound to a second address so as to set up a call session between an external SIP terminal connected to a public network and an internal SIP terminal connected to a private network, and performs media processing on an RTP packet based on a third address, the RTP packet exchanged through the call session. A SIP signaling gateway function, a media gateway function and SIP-ALG function are installed in one chip, and respective functions are allocated with different IP addresses by the application of a virtual interface and aliasing IP addresses. | 2009-01-29 |
20090028139 | AUTOMATED CONFIGURATION OF A DIGITAL CROSS CONNECT - A request is received to establish a requested connection in a digital cross connect between a first port and a second port. It is determined whether each of the first port and the second port are on a list of ports that are available for the connection. A command is issued to the digital cross connect to establish the requested connection. | 2009-01-29 |
20090028140 | SWITCHING DEVICE, SWITCHING METHOD, AND SWITCH CONTROL PROGRAM - A switching device includes an input stage switch group | 2009-01-29 |
20090028141 | Method and device for controlling admission to a guaranteed quality of service in a mpls network - The invention concerns a method and a device for controlling admission to a guaranteed quality of service in a MPLS network ( | 2009-01-29 |
20090028142 | STREAMING DATA CONTENT IN A NETWORK - A method and apparatus for streaming data content in a network. Some embodiments of an apparatus include a network unit to generate a stream of data on a network, where the generation of the stream of data includes the generation of summary information for the data. The apparatus also includes a transmitter to transmit the generated stream of data via the network. | 2009-01-29 |
20090028143 | Pattern Matching In A Network Flow Across Multiple Packets - Pattern matching for a network flow includes storing a representation of the pattern. The representation of the pattern includes hash values representing blocks of data in the pattern. Hash values are calculated for blocks of data in the network flow. The blocks of data are spread across multiple packets in the network flow. The calculated hash values for the blocks of data in the network flow are compared to the hash values in the representation of the pattern to detect the pattern in the network flow. | 2009-01-29 |
20090028144 | DEDICATED NETWORK INTERFACE - Computer communications that are to be recorded are visible to a network interface on a recording computer. The network interface receives the packets to be recorded. The network layer of the recording computer implements a subset of the normal IP module in the network layer. Instead of checking every IP packet, the IP module in the network layer assumes that most IP packets are correctly addressed, internally consistent and of the expected protocol type. The recording computer allocates the received packets to a recording session based upon the value of a field that is at a fixed position within the packet. Packets that are allocated to a session are recorded or associated with other packets that have been allocated to the same session. | 2009-01-29 |
20090028145 | TELEPHONE EXCHANGE APPARATUS AND CONTROL METHOD FOR USE IN THE APPARATUS - According to one embodiment, a telephone exchange apparatus includes a memory stores a management table in which a connecting destination ID specifying a communication partner on the packet communication network and a first waiting time from a time of signal transmission to the communication partner up to a time of an arrival of a response signal are associated with each other, a monitoring unit refers to the management table and monitors presence or absence of the response signal from the communication partner within the first waiting time corresponding to connection ID of the communication partner based on the reference result, and a controller stops transmission of a signal necessary for communication establishment to the connecting destination ID in the management table and updates first waiting time corresponding to the connecting destination ID in the management table into second waiting time shorter than the first waiting time. | 2009-01-29 |
20090028146 | CONTROLLED RELAY OF MEDIA STREAMS ACROSS NETWORK PERIMETERS - The invention provides an apparatus and method to establish media sessions for media streams crossing a network boundary. The system includes a media relay controlled by a media configurator control module. The media relay reserves media paths (that include ports in the network boundary), opens the media paths, closes the media paths, and provides information about the media paths. A media configurator is adapted to communicate with the media configurator control module and the media relay. The control module has an event handler handling multimedia session events, a local address resolver that determines if an address identifier of the media session belongs to a private address space and a control element used to establish the media path. The control element manages resources for the media relay. A state-refresh timer is used to maintain state consistency between all media relays controlled by a proxy engine and control elements. | 2009-01-29 |
20090028147 | Segmenting data packets for over-network transmission at adjustable fragment boundary - A computing system includes a communication mechanism and a data packet dividing mechanism. The communication mechanism is communicatively coupled to a network to send first data packet fragments over the network. The data packet dividing mechanism is to segment first data packets into the first packet fragments at a dynamically adjustable fragment boundary, such that the dynamically adjustable fragment boundary changes every time n-bit identifiers of the first data packets roll over. | 2009-01-29 |
20090028148 | Method And System For Improving Quality Of Communication Based On Label Distribution Protocol - A method and system for improving a quality of communication based on a label distribution protocol is provided. The method includes the following: When a local label switching router (LSR) finds out a change of a route at an upstream node in a multicast label switching path (LSP), it calculates and sets up a new optimized multicast LSP according to the label distribution protocol (LDP), and delays to send a withdraw request to the upstream node in the former multicast LSP. An interruption of the data stream in the multicast LSP reconstruction procedures can be avoided or reduced, so that the loss of data packets caused by the multicast LSP adjustment is reduced, and the quality of communication of the multicast is improved. | 2009-01-29 |
20090028149 | METHOD OF SETTING MULTICAST TRANSFER ROUTE AND METHOD OF MULTICAST LABEL SWITCHING FOR REALIZING THE SAME - A method of establishing a multicast transfer route is disclosed that can reduce the cost of entire route under a constraint on delay incurred between starting point and ending points. The method includes the steps of: computing the shortest route with respect to delay connecting the starting point and the plural ending points based on measurement result; computing delay from a node on the shortest route to each ending point and the greatest delay; removing, if the greatest delay satisfies a delay condition, the greatest-cost route from the shortest route in accordance with selection criteria effective for cost reduction; dividing the multicast transfer route into two route trees; and establishing separately computed route as a complementary route that complement the removed route for connecting the two route trees. A method of multicast label switching for realizing the above method is also disclosed. A multicast label switching route is established using hierarchical labels by establishing a common multicast label switching route using a first layer label and establishing plural partial multicast label switching routes for subgroup destinations using lower layer labels. A relay node recognizes the hierarchical labels thereby to label-switch using all hierarchical labels. | 2009-01-29 |
20090028150 | Protocol-Independent Packet Header Analysis - Analyzing a packet header in a data communications system involves using a descriptor mask to control selective comparison between one or more bits of the packet header and one or more bits of a session descriptor. Setting a mask bit to one state indicates that a comparison between a corresponding bit of a received packet header and a corresponding bit of a session descriptor should be performed, whereas setting the mask bit to an alternative state indicates that no comparison should be performed. A comparison result is generated that indicates whether all of the one or more bits of the packet header match corresponding ones of the one or more bits of the first session descriptor. The descriptor mask and session descriptor are programmable, so that the comparison hardware design is protocol-independent. | 2009-01-29 |
20090028151 | PACKET LEVEL PRIORITIZATION IN INTERCONNECTION NETWORKS - A method and apparatus for packet level prioritization in interconnection networks. An embodiment of an apparatus includes a transmitter to transmit a data stream to a recipient apparatus, the data stream including a plurality of data packets, the data packets including data packets of a first priority and data packets of a second priority. The apparatus further includes a network unit to direct the operation of the transmitter, the network unit to divide the data stream into multiple sub-streams, including a first sub-stream for data packets of the first priority and a second sub-stream for data packets of the second priority. | 2009-01-29 |
20090028152 | NODE APPARATUS - To satisfy a quality required for each traffic and perform switching for a packet segmented into cells without packet reassembly, there is provided a node apparatus including a header processing section ( | 2009-01-29 |
20090028153 | Method for Transmitting Information in a Multicast Environment - It is disclosed that in a multicast network environment individual information ( | 2009-01-29 |
20090028154 | Method And Device For Learning Forwarding Feature Information - A method and device for learning data forwarding information includes a forwarding table recording forwarding feature information stored in a switch device, and wherein corresponding service importance levels for the forwarding feature information are configured. The method includes receiving new forwarding feature information, determining whether the forwarding table is full; if full, determining whether to write the new forwarding feature information into the forwarding table according to the service importance level of the new forwarding feature information; otherwise recording the new forwarding feature information into the forwarding table, and recording service importance level corresponding to the new forwarding feature information. The disclosure also provides a device for learning data forwarding information. | 2009-01-29 |
20090028155 | BROADBAND ACCESS FOR VIRTUAL PRIVATE NETWORKS - A method for providing a virtual private network includes assigning to each edge device of a service provider a unicast IPv6 address, from an IPv6 address block of the service provider for a local area network of a user. The method also includes assigning to each edge device of the service provider a virtual private network specific multicast IPv6 address. The method also includes encapsulating a local area network frame in an IPv6 packet when a mapping of a destination address to an egress edge device does not exist. The method also includes adding a virtual private network identification header to a header of the IPv6 packet and broadcasting IPv6 packets having multicast addresses over the service provider network to all of the edge devices serving the virtual private network. The method also includes transmitting, authenticating and decapsulating the IPv6 packet. | 2009-01-29 |
20090028156 | FRAME TRANSMISSION SYSTEM AND FRAME TRANSMISSION APPARATUS - A frame transmission apparatus collects a plurality of frames supplied via multiple cables forming a single logic path based on link aggregation setting and outputs the collected frames to a single output line. The frame transmission apparatus includes a delay information storage unit which stores delay information indicating a transmission delay of each of the multiple cables, a reception timing correcting unit which corrects reception timings of the plurality of frames supplied via the multiple cables for the delay information corresponding to the multiple cables through which the plurality of frames have been supplied, and a data recovery unit which collects the plurality of frames supplied via the multiple cables in an order of the reception timings corrected by the reception timing correcting unit and outputs the collected frames to the output line. | 2009-01-29 |
20090028157 | Receiver and Method for Processing a Stream of Data Packets When an Error Occurred on the Physical Layer - A receiver which receives a stream of data packets including video data packets over a physical data link and drops data packets when an error on a physical communication layer is detected, wherein the receiver comprises a processor, configured so that it is able to check whether the received data packet is a video packet and whether it is corrupted by an error on the physical communication layer. If this is the case, the video packet is marked as corrupted and forwarded to the network layer. There is further provided a method for processing a stream of data packets including video data packets, the method including checking for each data packet whether it is a video data packet; checking for each video data packet whether it is corrupted by an error on the physical communication layer; marking a video packet as corrupted if it is corrupted due to an error on the physical communication layer; and forwarding the marked corrupted video packet to the network layer. | 2009-01-29 |
20090028158 | SYSTEMS AND METHODS FOR MULTI-PAIR ATM OVER DSL - At a transmitter, an ATM cell stream is received from the ATM layer and is distributed on a cell-by-cell bases across multiple DSL PHY's. At the receiver, the cells from each DSL PHY are re-combined in the appropriate order to recreate the original ATM cell stream, which is then passed to the ATM layer. | 2009-01-29 |
20090028159 | Methods and Systems for Providing RACF Configuration Information - Methods and systems are described for providing address information for nodes when multiple possibilities exist. For example, in a TISPAN environment the described techniques can be used to transmit address information to an SPDF when it needs to determine which of multiple A-RACFs associated with different IP domains that the SPDF needs to communicate with. | 2009-01-29 |
20090028160 | Method And Apparatus For Detecting Malicious Routers From Packet Payload - The method, apparatus and system of detecting whether a router is compromised and configured to place malicious packets onto the network are disclosed. In one embodiment, a method for detecting a malicious router includes performing hash on a current ingress packet received via the network packet payload to generate ingress packet hash values. Further, includes performing hash on current egress packet that is associated with the current ingress packet to generate egress packet hash values. The generated ingress packet hash values and the egress packet hash values are then compared. Then the router is checked to determine whether it is potentially compromised and configured to place the malicious packets based on the outcome of the comparison. | 2009-01-29 |
20090028161 | NETWORK TRAFFIC MANAGEMENT - One aspect of the specification is the use of a virtual entity to represent the bandwidth bottleneck point in a network. Areas of the network where bandwidth does not need to be managed can be modeled as zones. This model enables more flexibility as the virtual bottleneck point can represent a collection of components (e.g. routers), or a portion of a real component (e.g. a router could be represented by multiple virtual bottleneck points with different purposes.) This model can also allow a user to decide which points in their network should be managed, independent of the underlying data network infrastructure. These virtual entities can be placed between areas of the network, and configured with specific policies. Bandwidth usage across these virtual entities can be tracked and compared to the configured bandwidth limit available to the application at each bottleneck point. When the bandwidth available at the bottleneck point is fully utilized, additional calls can be blocked or rerouted. Policies can be applied to permit certain calls to proceed despite the fact that bandwidth is fully utilized, or to block certain calls when bandwidth usage is approaching the maximum level. Bandwidth management can be distributed or centralized with information shared throughout a distributed network. | 2009-01-29 |
20090028162 | METHOD AND SYSTEM FOR AUTOMATING MEMBERSHIP DISCOVERY IN A DISTRIBUTED COMPUTER NETWORK - Methods for automating membership discovery in a distributed computer network are presented. A particular method includes establishing a Multi-Protocol Label Switching (MPLS) tunnel and Targeted Label Distribution Protocol (LDP) signaling channel between a first Provider Edge (PE) device and a plurality of PE devices. A first Virtual Private LAN Service (VPLS) site is added to a Multi-Tenant Unit (MTU) device associated with the first PE device. A first LDP Label Mapping Message is sent to the first PE device from the MTU device. The first LDP Label Mapping Message is broadcast to the plurality of PE devices from the first PE device. A second LDP Label Mapping Message is sent to the MTU device from the first PE device to establish a virtual circuit label switch path between the MTU device and the first PE device. A second VPLS site is added to the MTU device without sending an associated LDP Label Mapping Message to the first PE device. A respective one VPLS site of the first VPLS site or the second VPLS site is deleted using a configuration command. | 2009-01-29 |
20090028163 | DISTRIBUTED NETWORK MANAGEMENT - This specification can provide resource allocation in peer-to-peer networks. This specification describes techniques whereby individual resources can in certain circumstances share their local views to create a network-wide view. The use of a performance manager facilitates this sharing. The sharing of fault information both access multiple devices and for a single device across restarts is also provided. A network-based aggregator for performance and fault analysis is also provided so that complex analysis algorithms can be provided centrally to assist network performance management. | 2009-01-29 |
20090028164 | METHOD AND APPARATUS FOR SEMANTIC SERIALIZING - A method and an apparatus for serializing a plurality of information elements that are extracted from a plurality of information sources and represented by nodes in a semantic network. The nodes are connected to other nodes via a plurality of connecting edges, and each of the connecting edges has at least one edge property value. The method includes selecting an initial node of the plurality of nodes and determining one of the at least one node property values of first order connecting nodes connected to the initial node, determining a first node connected to the initial node by the connecting edge having a highest value of the at least one node property value, examining further first order connecting nodes connected to the first node and determining a relevance order of the further first order connecting nodes connected to the first node and serializing the plurality of information elements in accordance with the relevance order of the further first order connecting nodes to produce a serial list. | 2009-01-29 |
20090028165 | Method for Operating a Decentralized Data Network - A decentralized data network contains a plurality of network nodes. The network nodes are able to direct requests into the data network with the aid of checking values. The network nodes are each assigned one or more table entries in a value table distributed between the network nodes, with each table entry containing a checking value and the data associated with the checking value. Each of the plurality of network nodes are monitored to determine the frequency with which requests for the checking values assigned to a respective network node are directed to the respective network nodes. If it is found that the frequency of the requests for one or more checking values to a respective network node exceeds a predetermined threshold value, at least the table entry or entries for this or these checking values is or are assigned to at least one other network node. | 2009-01-29 |
20090028166 | ALLOCATION OF ROUTE TARGETS BASED ON SERVICE OFFERED - A network controller to allocate route targets for communication services provided on one or more corresponding virtual private networks, the route targets identifying service providers associated with the virtual private networks and the communication services provided by the corresponding virtual private networks. | 2009-01-29 |
20090028167 | COOPERATIVE NAT BEHAVIOR DISCOVERY - Methods and apparatus for facilitating traversal of a network address translator (NAT) are disclosed. For example, a node configured to communicate with one or more other nodes over a network may facilitate NAT traversal by a) determining information regarding the behavior of one or more NATs with the node; and storing the information in such a way that the information is retrievable by one or more other nodes; or b) retrieving information regarding behavior of one or more NATs obtained by one or more other nodes and using the information to traverse one or more of the NATs. | 2009-01-29 |
20090028168 | Modem relay over packed based network - A method of performing a negotiation session on a modem connection. The method includes receiving a plurality of negotiation signals from the source modem, by a first gateway, forwarding at least some of the received negotiation signals from the first gateway to a second gateway, over a packet based network, receiving, by the first gateway, responses to the forwarded negotiation signals from the second gateway, forwarding the responses from the second gateway to the source modem, by the first gateway, and transmitting from the first gateway to the source modem, response signals to at least some of the received negotiation signals, without receiving a response to the at least some of the signals from the second gateway. | 2009-01-29 |
20090028169 | METHOD AND DEVICE FOR ROUTING MESH NETWORK TRAFFIC - A method and device for routing mesh network traffic from a mesh access point to a non-mesh network as provided improves network efficiency. According to one aspect, the method includes identifying a data flow in the mesh network traffic. A priority of the data flow is then determined. A preferred mesh gateway is then selected from a plurality of mesh gateways based on the priority of the data flow and preference information of the plurality of mesh gateways, where the plurality of mesh gateways provide routes to the non-meshed network. The data flow is then routed to the preferred mesh gateway, wherein the preferred mesh gateway routes the data flow to the non-mesh network. | 2009-01-29 |
20090028170 | NETWORK MONITORING BY CUSTOMER PREMISES EQUIPMENT - A system for collecting data from a communications network includes customer premises equipment (“CPE”) for monitoring and storing response data. A CPE data collection module uses a Web-based service to collect information from the CPE and process the information to determine line quality and any errors that may exist on either the WAN side or the LAN side of the communications network, and further determine the root cause based on built-in business rules for trouble shooting customer service. The CPE conducts per-tone diagnostics on the WAN side of the communications network and obtains WAN side data. The CPE obtains response data from devices on the LAN side. Both WAN side data and LAN data may be transmitted substantially in real-time or stored and transmitted periodically to the CPE data collection module upon requests originated from the CPE data collection module. | 2009-01-29 |
20090028171 | FIFO BUFFER WITH ADAPTIVE THRESHOLD LEVEL - A system comprising a FIFO data buffer having a programmable threshold level, which is initially set to a worst case scenario level, so that the FIFO data buffer does not empty of data. The system also comprises a hardware device which is configured to adjust the threshold level in the FIFO data buffer to a level equal to the current threshold level minus the amount of remaining data in the FIFO data buffer at the time new data enters the FIFO data buffer. The hardware device is also configured to adjust the threshold level to the initial threshold level if the FIFO data buffer underflows. The hardware device may be coupled to the FIFO data buffer, implemented in the FIFO data buffer, or implemented in the display subsystem. The system may be implemented in a mobile communications device. | 2009-01-29 |
20090028172 | SPECULATIVE FORWARDING IN A HIGH-RADIX ROUTER - A system and method for speculative forwarding of packets received by a router, wherein each packet includes phits and wherein one or more phits include a cyclic redundancy code (CRC). A packet is received and phits of the packet are forwarded to router logic. A cyclic redundancy code for the packet is calculated and compared to the packet's cyclic redundancy code. An error is generated if the cyclic redundancy codes don't match. If the cyclic redundancy codes don't match, a phit of the packet is modified to reflect the error, the CRC is corrected and the corrected CRC is forwarded to the router logic along with the phit reflecting the CRC error. At the router logic, a check is made to see if the packet is still within the router logic. If the packet is still within the router logic and there was a CRC error, the packet is discarded. If, however, the packet is no longer within the router logic and there was a CRC error, the packet is modified so that the next router discards the packet. | 2009-01-29 |
20090028173 | MDIO integrated bidirectional digital isolator - An interface between two or more integrated circuit devices employs isolation techniques to provide electrical isolation of a digital signal for transmission of the digital signal between a master device and one or more slave devices. Unidirectional isolator channels are utilized to transmit bidirectional digital signals, and a selection of an isolator channel operating in an intended direction is performed by direction control logic. Logic that monitors read and write transactions operates to determine a desired direction of the digital signal and accordingly directs the digital signal through an appropriate isolator channel. | 2009-01-29 |
20090028174 | Shared time universal multiple access network - A method of controlling access to a network media by a plurality of stations, the method including determining a number of time slots; determining a number of slot cycles for each time slot, at least one of the time slots having more than one slot cycle; assigning each station one or more slot cycles in one or more time slots; and operating each of the stations by initializing an access timer to time out at the beginning of the station's assigned slot cycle(s) and transmitting data during the assigned slot cycle(s), the access timer being stopped whenever a station transmits over the network, and restarted at the end of transmission. | 2009-01-29 |
20090028175 | TDMA Communication Apparatus - A TDMA communication apparatus is configured for transmitting DSC response signals while preventing overlapping with AIS. A CPU | 2009-01-29 |
20090028176 | Bandwidth Requests Transmitted According to Priority in a Centrally Managed Network - Systems and methods are disclosed for a managed access network device that generates and transmits a schedule map for requesting bandwidth to a plurality of network devices. The managed access network device then broadcasts a request time where the request time is broken down into a plurality of periods. When a network device generates a packet having a priority, the schedule map is then consulted to determine one of a plurality of periods in which to transmit the request for bandwidth, where each period corresponds with at least one priority. The network device then subsequently transmits the request for bandwidth during the determined period within the request time. | 2009-01-29 |
20090028177 | System and method for wireless communication in a backplane fabric architecture - A wireless millimeter wave backplane network and method comprises a first circuit board that has a first module thereon, wherein the first circuit board is coupled to a high speed backplane. The network includes a first communication node that is coupled to the first module and which is disposed on the first circuit board. The network includes a second circuit board that has a second module thereon, wherein the second circuit board is coupled to the high speed backplane. The network includes a second communication node that is coupled to the second module and disposed on the second circuit board, wherein the first and second modules wirelessly communicate using millimeter wave electromagnetic radiation with one another via the first and second communication nodes. | 2009-01-29 |
20090028178 | Encoding and Decoding Messages on Noisy Timing Channels - In accordance with one or more aspects of the encoding and decoding messages on noisy timing channels, a message is encoded, based at least in part on a cumulative distribution function, in inter-arrival timings of data packets. The data packets are output to a device with the message in the inter-arrival timings of the data packets. A the device, the inter-arrival timings of the data packets are identified. The message encoded in the inter-arrival timings is decoded based at least in part on a model representing noise between a source of the data packets and the device. | 2009-01-29 |
20090028179 | STORING DEVICE CAPABILITY INFORMATION IN AN ADDRESS BOOK | 2009-01-29 |
20090028180 | Method and Apparatus for Mitigating Layer-2 Looping in Home Networking Applications - Embodiments of the invention generally provide a method and apparatus for mitigating layer-2 loops in home networking applications. One embodiment of a method for mitigating layer-2 loops in a network includes detecting a loop between a first terminal in the network and a second terminal in the network, and deactivating at least one active home networking interface at the first terminal. | 2009-01-29 |
20090028181 | Distributed multimedia and messaging router over layer 2 - A system and a method are disclosed which utilizes the standard communication devices at the users' premises and a standard LAN communication in order to enable utilization of IP communication possibilities such as V/FoIP calls, SMS and MMS messaging and video communication over IP network. The system includes a single Local Server and multiple Endpoint Interface Units. The Local Server connects the LAN to the external IP communication and each Endpoint Interface Units connects the communication devices to the LAN. According to the preferred embodiment all communication between the Local Server and the Endpoint Interface Units is established using a layer | 2009-01-29 |
20090028182 | Methods and apparatus for format selection for network optimization - Method and apparatus for optimizing network bandwidth utilization by delivering to users only the minimum number of programs required by service provider policies. In one embodiment, the method comprises switching some users from lower quality versions of programs to higher quality versions of the same programs, and removing those lower quality versions of programs from a given service group. In another embodiment, some users are switched from higher quality versions of programs to lower quality versions of those same programs, and the higher quality versions of programs removed from a given service group. | 2009-01-29 |
20090028183 | Platform for communicating across multiple communication channels - Systems, methods, and other embodiments associated with communications through a software platform are described herein. In an embodiment, a method for communicating with users across multiple communication channels from a single platform includes gathering data related to a first user; storing the gathered data; accessing the stored data to determine whether a message should be sent to the first user; accessing the stored data to determine what communication channel should be used to send the message to the first user; formatting the message for the determined communication channel; and sending the message to the first user through the determined communication channel. | 2009-01-29 |
20090028184 | PROGRAMMABLE LOGIC CONTROLLER PROTOCOL CONVERTER - A programmable logic controller (PLC) protocol converter is disclosed that allows a supervisory control and data acquisition (SCADA) system to effectively communicate with a PLC device using a desired communications protocol, particularly in cases where the PLC device does not “speak” the desired communications protocol. A first thread may be configured to continually read PLC addresses, one at a time, using a communications protocol understood by the PLC device. The first thread may store the data values in the shared data array within program memory. Thus, the first thread exposes data from the PLC device, as specified in the configuration file. At the same time, a second thread may be configured to serve the data in the shared data array according to a second communications protocol, e.g., to the SCADA system. | 2009-01-29 |
20090028185 | SYSTEM AND METHOD FOR MANAGING A DATA TRANSMISSION LAYER FOR A PERSONAL MEDICAL DEVICE | 2009-01-29 |
20090028186 | BANDWIDTH RESERVATION FOR DATA FLOWS IN INTERCONNECTION NETWORKS - A method and apparatus for bandwidth reservation for data flows in interconnection networks. Some embodiments of an apparatus for transmitting a data stream include a transmitter to transmit a data stream to a recipient apparatus, the data stream including a plurality of data packets. The apparatus further includes a receiver to receive a response from the recipient apparatus regarding data packet arrival status, and a network unit to direct the operation of the transmitter, the network unit to direct the transmitter to maintain the data stream with a constant bandwidth. | 2009-01-29 |
20090028187 | Upstream adaptive modulation in a communications system - A system and method for providing upstream adaptive modulation. Burst parameters associated with a range of data interval usage codes (IUCs) are defined. Each of the data IUCs has a different modulation order and forward error correction (FEC). The SNR and codeword error rate for each satellite modem in the network are monitored. The data IUCs are dynamically assigned to different satellite modems within an upstream channel based on SNR and/or codeword error rate to enable each of the satellite modems in the upstream channel to achieve maximum bandwidth efficiency during upstream data transmissions. Bandwidth requests are received from the satellite modems and granted. The grant includes the assigned data IUC. The data bursts received in the upstream channel are each processed using the parameters from the assigned IUC for each of the satellite modems sending data in the upstream channel. When any of the satellite modems' SNR and/or codeword error rate changes, the data IUC for that satellite modem is changed accordingly. | 2009-01-29 |
20090028188 | SYSTEM AND METHOD FOR COMBINING MEDIA DATA - A method and computer program product for processing a locally-stored, specific media data file portion to generate a first normalized packetized stream. A remotely-sourced, specific media data stream is processed to generate a second normalized packetized stream. At least a portion of the first normalized packetized stream and at least a portion of the second normalized packetized stream are combined, using a packet loss tolerant stitching algorithm, to generate a loss-compensated media data stream. | 2009-01-29 |
20090028189 | DATA STRUCTURE, INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, TRANSMISSION DEVICE, TRANSMISSION METHOD, MULTIPLEXING DEVICE, MULTIPLEXING METHOD, AND PROGRAM - The present invention relates to a data structure, an information processing apparatus, an information processing method, a transmitting apparatus, a transmitting method, a multiplexing apparatus, a multiplexing method, and a program that ensure a receiving side to decode hierarchically coded audio streams each including a base stream and an extension stream. A TS packetizing section | 2009-01-29 |
20090028190 | DEVICE AND METHOD OF CONSTRUCTING GENERATION MATRIX FOR LINEAR BLOCK CODING, CODING DEVICE AND DECODING DEVICE USING THE GENERATION MATRIX - A method of constructing a generation matrix of a linear block code. The method includes setting a number of relation lines connected for respective codeword packet nodes if a number of massage packet nodes and the number of codeword packet nodes are selected; setting a number of relation lines connected for the respective message packet nodes; connecting the message packet nodes and the codeword packet nodes with the relation lines, the number of which is as many as the set number; and constructing the generation matrix of the linear block code based on the connection relation between the message packet nodes and the codeword packet nodes. Accordingly, the generation matrix for effectively performing a linear block coding of a message in the unit of a packet can be constructed. | 2009-01-29 |
20090028191 | METHOD FOR EXCHANGING DATA BETWEEN STATIONS FROM DIFFERENT NETWORKS - The invention relates to a method for exchanging data between stations or nodes ( | 2009-01-29 |
20090028192 | Generation, distribution and use of content metadata in a network - Methods and apparatus for utilizing information (e.g., metadata) relating to content in a multimedia distribution network. In one embodiment, the network comprises a hybrid fiber coax (HFC) cable network, and the information comprises metadata relating to the bitrate profile of deterministic content such as stored video. Content sources, or the network operator themselves, generate the metadata which may then be used by the operator to adjust or optimize the operation of the network; e.g., more efficiently allocate the program to a multiplex. Network apparatus adapted to implement the metadata functionality and related business methods are also disclosed. | 2009-01-29 |
20090028193 | BROADBAND OR MID-INFRARED FIBER LIGHT SOURCES - A broadband light source includes one or more laser diodes that are capable of generating a pump signal having a wavelength shorter than 2.5 microns, a pulse width of at least 100 picoseconds and a pump optical spectral width. The light source also includes one or more optical amplifiers that are coupled to the pump signal and are capable of amplifying the pump signal to a peak power of at least 500 W. The light source further includes a first fiber that is coupled to the one or more optical amplifiers. The first fiber including an anomalous group-velocity dispersion regime and a modulational instability mechanism that operates to modulate the pump signal. In one particular embodiment, the pump signal wavelength resides in the anomalous group-velocity dispersion regime of the first fiber and where different intensities in the pump signal can cause relative motion between different parts of the modulated pump signal produced through modulational instability in the first fiber. The light source also including a nonlinear element that is coupled to the first fiber that is capable of broadening the pump optical spectral width to at least 100 nm through a nonlinear effect in the nonlinear element. | 2009-01-29 |
20090028194 | TUNABLE LASER - A mode hop-free tunable laser including a gain medium, a microfabricated blazed grating, defining an external cavity of a given length, the blazed grating lying in a general plane and including a plurality of elongate beams carrying mutually parallel respective reflection surfaces spaced apart from one another with a predefined pitch, and actuating elements designed so as to allow displacements of the assembly with respect to a grating support within a plane substantially parallel to the grating general plane, and including actuation elements designed so as to apply a stretching and a displacement of the assembly in a direction transverse to said reflection surfaces, the blazed grating being arranged relative to an incident light beam provided by the gain medium so that the incident light beam impinges on the reflection surfaces with a substantially normal incident angle. | 2009-01-29 |
20090028195 | SYSTEM AND METHOD FOR FREQUENCY CONVERSION OF COHERENT LIGHT - A system and method is disclosed for converting a frequency of a coherent light source. A birefringent nonlinear material is cut at an angle for critical phase matching to form a rectangular parallelepiped biased nonlinear crystal. The nonlinear crystal cut at a biased angle can be placed at an angle in a coherent light beam to enable the beam to be directed through the crystal over a substantially optimal phase matching path while minimizing back reflection of the coherent light beam to the coherent light source. | 2009-01-29 |
20090028196 | CONTINUOUS FORM ELECTROPHOTOGRAPHIC APPARATUS AND WRITE-START POSITION CONTROL METHOD THEREOF - A disclosed continuous form electrophotographic apparatus for forming an output image on a photoconductor surface by scanning the photoconductor surface with a laser beam irradiated from a laser light source and outputting the output image on a continuous form, includes a laser beam position detecting unit configured to output a position signal indicating a starting position where the laser beam irradiated on the photoconductor surface starts horizontal scanning; and a control signal output unit configured to output a control signal for controlling a timing at which the laser beam starts writing image data in a vertical direction. The phase difference between the control signal output from the control signal output unit and the position signal is corrected. | 2009-01-29 |
20090028197 | FIXED WAVELENGTH MID INFRARED LASER SOURCE WITH AN EXTERNAL CAVITY - A MIR laser source that produces a fixed frequency output beam that is within the MIR range includes a QC gain media, and a wavelength dependent (“WD') feedback assembly that is spaced apart from the QC gain media and that cooperates with the QC gain media to form an external cavity. The WD feedback assembly may be used to precisely tune and control a lasing wavelength of the external cavity, and the position of the WD feedback assembly relative to the QC gain media may be fixed to maintain the precise lasing wavelength of the external cavity. With this design, each MIR laser source can be individually tuned to achieve the desired fixed frequency output beam that is within the MIR range. | 2009-01-29 |
20090028198 | Beaconless adaptive optics system - An improved beaconless adaptive optics system and process. A target is illuminated with a high energy laser beam of a directed energy laser. Wave front measurements are made of high energy laser beam reflections from the target. These wave front measurements are analyzed by a high speed processor to determine both high frequency phase components and low frequency phase components in the wave front data. (Applicants' experiments have shown that there is a direct correlation between beam spot size on the target and the phase variance of the reflected laser beam. The correlation is: the greater the phase variance the smaller the beam spot size.) Applicants have developed a technique for providing special control algorithms that provide very high speed control of the elements of a deformable mirror using this phase variance as a feedback parameter. Applicants have also developed algorithms to correct a limited number of Zernike modes associated with the wave front control. | 2009-01-29 |
20090028199 | LASER PROJECTION TEMPERATURE COMPENSATION - The temperature of a laser diode changes in response to video content across a line of a displayed image, and the radiance changes as a function of temperature. An adaptive model estimates the temperature of the laser diode based on prior drive current values. For each displayed pixel, diode drive current is determined from the estimated diode temperature and a desired radiance value. A feedback circuit periodically measures the actual temperature and updates the adaptive model. | 2009-01-29 |
20090028200 | LASER DIODE DRIVE CIRCUIT, ELECTRONIC CIRCUIT, METHOD FOR CONTROLLING LASER DIODE DRIVE CIRCUIT, AND METHOD FOR CONTROLLING DUTY - A laser diode drive circuit includes: a duty control amplifier ( | 2009-01-29 |
20090028201 | OPTICAL COMMUNICATION SYSTEM AND OPTICAL TRANSMITTER - An optical communication system for performing data transmission with optical signals comprises a first optical transmitter and a first optical receiver. The first optical transmitter has a first surface-emitting laser including an active layer of a multiple quantum well structure having a quantum well layer of In | 2009-01-29 |
20090028202 | Nitride light emitting device and manufacturing method thereof - A nitride light emitting device includes a first conduction type cladding layer, an active layer, and a second conduction type cladding layer that are stacked on a substrate. The second conduction type cladding layer has an uneven shape including at least one concave and/or convex portion. | 2009-01-29 |
20090028203 | OPTICAL SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING THE SAME - A method for manufacturing a semiconductor device having a compound semiconductor layer that is provided on a substrate and includes a cladding layer of a first conductivity type, an activation layer, a cladding layer of a second conductivity type that is the opposite of the first conductivity type, includes the steps of: forming a diffusion source layer on the compound semiconductor layer; forming a first diffusion region in the compound semiconductor layer by carrying out a first heat treatment, so that the first diffusion region includes a light emitting facet for emitting light from the activation layer; removing the diffusion source layer; forming a first SiN film having a refractive index of 1.9 or higher on the compound semiconductor layer; and turning the first diffusion region into the second diffusion region by carrying out a second heat treatment. | 2009-01-29 |
20090028204 | SEMICONDUCTOR LASER DEVICE - A semiconductor laser device includes a substrate made of a nitride-based semiconductor and a waveguide formed on a principal surface of the substrate, wherein the substrate includes a dislocation concentrated region arranged so as to obliquely extend with respect to the principal surface of the substrate, and the waveguide is so formed as to be located above the dislocation concentrated region and also located on a region except a portion where the dislocation concentrated region is present in the principal surface of the substrate. | 2009-01-29 |
20090028205 | DISPERSION COMPENSATOR, SOLID-STATE LASER APPARATUS USING THE SAME, AND DISPERSION COMPENSATION METHOD - A dispersion compensator which is compact, low loss, low cost, and highly stable, and yet capable of varying the dispersion compensation amount without changing the output position of an output beam. The dispersion compensator includes: a first and a second planar mirrors disposed parallel to each other, wherein at least either one of the mirrors has group velocity dispersion whose value varies according to the incident angle of light incident on the mirror; a mirror holding means rotatably holding the first and second mirrors in a direction in which the incident angle of light incident on the first mirror is changed while maintaining the parallel state of the mirrors; and a third mirror disposed so as not to be rotated with the first and second mirrors and reflects light reflected sequentially by the first mirror and the second mirror. | 2009-01-29 |
20090028206 | Method of Increasing the Laser Damage Threshold of Diffraction Gratings - For increasing the laser damage threshold (LDT) of diffraction gratings, particularly of multi-layer dielectric diffraction (MLD) gratings, the invention proposes a method for treating a diffraction grating to be used in a high energy laser apparatus having a first laser with the steps of providing the diffraction grating, providing a second treatment laser and irradiating the diffraction grating with laser light from the second treatment laser until the laser damage threshold of the diffraction grating has increased. | 2009-01-29 |
20090028207 | Mobile Charge Induced Periodic Poling And Device - Devices and methods are disclosed for realizing a high quality bulk domain grating structure utilizing mobile charges that are generated by means of photo-excitation in a substrate. An effect of light exposure (UV, visible, or a combination of wavelengths) is to generate photo-induced charges. The application of a voltage across the substrate combined with the application of light exposure causes a photo-induced current to flow through the substrate. The photo-induced charges (behaving like virtual electrode inside the material) and the photo-induced current result in both reduction of the coercive field required for domain inversion in the material and improve realization of the domain inversion pattern, which previously has not been possible at room temperature. | 2009-01-29 |
20090028208 | Analyte collection devices and methods - An aspect of the invention is directed to a method for operating an analyte collection device of the type that includes at least one plate for storing said analyte. An example method comprises the steps of heating the at least one plate to a first temperature, taking a measurement of a property of the at least one plate, and using the measurement to estimate one or more of the amount of the analyte on the plate and the amount of contaminant on the plate. | 2009-01-29 |
20090028209 | Energy Meter For Mixed Streams Of Combustible Compounds - An energy content meter can spectroscopically quantify oxidation products after oxidation of a combustible mixture. The measured oxidation product concentrations or mole fractions can be converted to an energy content of the un-oxidized combustible mixture using a conversion factor that relates oxygen consumption during oxidation of the combustible mixture to the energy content of the combustible mixture. | 2009-01-29 |
20090028210 | METAL SURFACE TEMPERATURE MEASURING INSTRUMENT - A metal surface temperature measuring device includes: a container to contain a coolant; a measurement target; a heater to heat the measurement target; a moving mechanism for moving the measurement target; and a thermometer to measure the surface temperature of the measurement target. A main body of the measurement target is formed of silver or copper, and a surface of the main body is coated with a thin film of pure iron or an iron alloy at a thickness of 1 to 100 μm. Further, at least the container, the heater, and the measurement target are disposed in a chamber of an inert gas atmosphere. | 2009-01-29 |
20090028211 | ULTRASONIC DIAGNOSTIC APPARATUS - An ultrasonic diagnostic apparatus includes an ultrasonic probe having a plurality of transducers arranged and a plurality of temperature sensors located along a direction of arranging the transducers, and a temperature calculation device for obtaining a maximum temperature on the basis of the detected temperatures of the plurality of temperature sensors. | 2009-01-29 |
20090028212 | Dram temperature measurement system - A converter comprising a comparator having a first input operable to receive a first signal, a second input operable to receive a second signal, and an output, a switch for sinking a portion of the first signal, wherein the switch is responsive to the output, and an integrator connected to the first input, wherein the first signal is a voltage developed by the integrator when a current proportional to the absolute temperature is applied thereto. A method for measuring temperature of a device using a comparator and converting the bitstream of the comparator to a digital output is also given. Because of the rules governing abstracts, this abstract should not be used to construe the claims. | 2009-01-29 |