25th week of 2011 patent applcation highlights part 41 |
Patent application number | Title | Published |
20110149970 | METHOD OF TRANSMITTING ETHERNET FRAME IN NETWORK BRIDGE AND THE BRIDGE - Provided is a method of transmitting an Ethernet frame via a network bridge, the method includes receiving a frame header from a previous node connected to the network bridge; receiving a header cyclic redundancy check (CRC) flag and header CRC with respect to the frame header from the previous node; determining whether to forward the Ethernet frame including the frame header by referring to the header CRC flag and the header CRC; and forwarding the Ethernet frame from the previous node to a next node connected to the network bridge according to the determination. | 2011-06-23 |
20110149971 | METHOD, APPARATUS AND SYSTEM FOR PROCESSING PACKETS - A method, an apparatus, and a system for processing packets are disclosed. The method is applied to a distributed architecture of multiple service boards; the distributed architecture includes a main control board, at least one service board, and at least one interface board. The method includes: determining a specified CPU corresponding to a received packet; and, by the service board corresponding to the CPU, processing the received packet. Through the embodiments of the present invention, the received packets are processed in the service board corresponding to the specified CPU. Therefore, the packets are evenly distributed to all service boards for being processed, the workload of the main control board is relieved, the service throughput is increased significantly, and the packet processing efficiency of the whole architecture is improved. | 2011-06-23 |
20110149972 | COMMUNICATION NETWORK SYSTEM, NETWORK SWITCH AND BANDWIDTH CONTROL, FOR SITE-TO-SITE COMMUNICATIONS - A communication network system is disclosed in which local-branch-site-line network switches accommodating local-branch-site lines, and at least one data-center-site-line network switch accommodating at least one data-center-site line, are interconnected via a carrier network. This system include: a first bandwidth controller, disposed at each local-branch-site-line network switch, configured to limit a bandwidth of each of inbound packets and/or outbound packets to a pre-selected bandwidth α, wherein the inbound packets flow from the instant local-branch-site-line network switch or other local-branch-site-line network switches, and the outbound packets flow to the instant local-branch-site-line network switch or other local-branch-site-line network switches; and a second bandwidth controller, disposed at each local-branch-site-line network switch, configured to limit a bandwidth of each of inbound packets and/or outbound packets to a pre-selected bandwidth β broader than the bandwidth α, wherein the inbound packets flow from the data-center-site-line network switch, and the outbound packets flow to the data-center-site-line network switch. | 2011-06-23 |
20110149973 | Packet Forwarding In A Network - A method of providing packet routing information comprises: encoding routing information from a source node to one or more destination nodes into a compact representation of set membership; and putting the compact representation of sets into a header of a packet that is to be sent from the source node to the destination node(s). The compact representation may be obtained by: generating d representations of a set of identifiers; generating d candidate compact representations of set membership from the d representations of the identifiers; and selecting one of the candidate compact representation of set membership. The selection may be made on the basis of which of the candidate compact representations has the lowest rate of returning false positives. | 2011-06-23 |
20110149974 | DATA PROCESSING APPARATUS, DATA PROCESSING METHOD, AND COMPUTER-READABLE STORAGE MEDIUM - A data processing apparatus includes a receiving unit for receiving a packet, a determining unit for determining whether to process the packet data by a self-module, based on first information contained in the packet and indicating a processing order, a processing unit for processing the data if the data should be processed by the self-module, a generating unit for generating a packet containing the first information, and one of the processed data, and second information indicating that the data to be processed is stalled, and a transmitting unit for transmitting, according to the first information, the packet to a module expected to process the packet next. The transmitting unit performs the transmission at a transmission interval longer than a predetermined time, if the first and second information indicate that the packet contains data which should be processed by a module next to the self-module in processing order and is stalled. | 2011-06-23 |
20110149975 | STREAMING SEGMENTATION AND REASSEMBLY IN ASYNCHRONOUS TRANSFER MODE COMMUNICATIONS - Systems, methods, and apparatuses are provided that enable streaming of ATM cells between a transmit/receive data processing application and a transmission convergence function. Data to be segmented into an ATM cell is received at a SAR engine, and provided to a transmission convergence function, with the first cells transmitted to the transmission convergence function before the SAR function receives an end-of-packet indication from the optimization engine. Data received at a transmission convergence function is placed in a received packet queue at the SAR function, with packets provided to an application after a start-of-packet indication is received, and before an end-of-packet indication is received, at the SAR function. | 2011-06-23 |
20110149976 | DISTRIBUTING CELLS ON AN IMA LOGICAL LINK HAVING INACTIVE IMA SUB-LINKS - The invention is directed to a method and system for efficiently distributing Inverse Multiplexing over ATM (IMA) filler cells on IMA logical links having inactive or unusable IMA sub-links. Inactive IMA sub-links are identified during round-robin distribution of ATM data cells to active IMA sub-links. Predefined IMA filler cells are transmitted simultaneously on the identified inactive IMA sub-links when an ATM data cell is transmitted on an active IMA sub-link, thereby reducing the delay between transmitting ATM data cells. | 2011-06-23 |
20110149977 | AVOIDING UNFAIR ADVANTAGE IN WEIGHTED ROUND ROBIN (WRR) SCHEDULING - A network device includes multiple queues to store packets to be scheduled, and a weighted round-robin (WRR) scheduler. The WRR scheduler performs a first WRR scheduling iteration including processing of at least one packet from a particular queue of the multiple queues, identifies the particular queue as an empty queue during the performing of the first WRR scheduling iteration, identifies the particular queue as a non-empty queue after the identifying the particular queue as the empty queue, and performs a second WRR scheduling iteration including processing of only one packet of a group of packets from the particular queue of the multiple queues. | 2011-06-23 |
20110149978 | NETWORK SYSTEM USING PATH HEALTH INFORMATION FOR PATH SELECTION - A network system employs path health information to select an acceptable path between a source node and destination node within an information handling system (IHS) and/or between a source node within one IHS and a destination node within another IHS. One or more switches may connect these two IHSs together. The network system accesses the path health information to determine the availability of paths for communicating between nodes. | 2011-06-23 |
20110149979 | COMMUNICATION NETWORKS THAT PROVIDE A COMMON TRANSPORT DOMAIN FOR USE BY MULTIPLE SERVICE DOMAINS AND METHODS AND COMPUTER PROGRAM PRODUCTS FOR USING THE SAME - A method of operating a communication network comprises receiving loopback addresses from a plurality of edge networks at a provider router of a core backbone network, the edge networks and the core backbone network being logically distinct from each other, advertising the loopback addresses to a transport route reflector element, propagating the advertisement of the loopback addresses to other provider routers of the core backbone network using a protocol for communicating between autonomous systems, and using the transport route reflector element to advertise at least one of the loopback addresses to a service route reflector element in one of the plurality of edge networks. | 2011-06-23 |
20110149980 | EFFICIENT GENERATION OF VPN-BASED BGP UPDATES - In one embodiment, a router may store a “neighbor table” for storing the router's Border Gateway Protocol (BGP) neighbors. Each neighbor corresponds to a virtual routing and forwarding (VRF) instance and associated VRF identifier (ID), and the neighbor table indexes the BGP neighbors according to their respective VRF ID. In response to initiating a BGP update generation for a BGP table having BGP network entries, each entry having an associated VRF ID that indicates to which VRF instance the BGP entry is to be advertised, a single lookup operation for each BGP entry is performed into the neighbor table based on the corresponding VRF ID of each BGP entry to determine a corresponding VRF update group of indexed BGP neighbors to which each BGP entry is to be advertised. Accordingly, a shared BGP update may be generated for each VRF update group for the initiated BGP update generation. | 2011-06-23 |
20110149981 | DEADLOCK PREVENTION IN DIRECT NETWORKS OF ARBITRARY TOPOLOGY - Aspects of the invention pertain to routing packets in a computer system while avoiding deadlock. A turn rule is set according to unique identifiers associated with switches in the system. Numeric values of switches in possible turns are compared to determine whether a turn is permissible. The rule applies to all nodes in the system. The rule may be violated when using virtual channels. Here, a violation is permissible when using monotonically increasing virtual channel numbers or monotonically decreasing virtual channel numbers. Alternatively, the violations of the turn rule may be allowed if they force a packet to change to a later virtual channel in some fixed ordering of virtual channels. Deadlock can thus be avoided in many different types of architectures, including mesh, torus, butterfly and flattened butterfly configurations. | 2011-06-23 |
20110149982 | ETHERNET-MOST GATEWAY APPARATUS - An Ethernet-MOST gateway apparatus for exchanging data between a MOST network transferring multimedia data within a vehicle and a packet network for a computer and Internet communications. The Ethernet-MOS gateway apparatus including: an Ethernet frame interface unit connected with a packet network to transmit and receive an Ethernet frame, and converting the Ethernet frame into a MOST frame; a MOST frame interface unit connected with a MOST network to transmit and receive the MOST frame, and converting the MOST frame into the Ethernet frame; and a switch fabric connecting the Ethernet frame interface unit and the MOST frame interface unit. | 2011-06-23 |
20110149983 | AMI GATEWAY APPARATUS FOR PROCESSING LARGE AMI DATA AND VARIOUS APPLICATION PROFILES AND METHOD THEREOF - Provided are an AMI gateway apparatus and method for processing large AMI data and an application profile. The AMI gateway apparatus and method are associated with collecting meter data of smart meters measuring the amount of electricity or the like and transmitting the meter data to an AMI server. Disclosed is a method of reducing an ID type and a method of minimizing meter data to reduce the transmission rate of large AMI data including an ID value and meter data. A method of setting a gateway ID value according to locations and zones is also provided. Those three methods achieve the efficient transmission of large AMI data to an AMI server and is applicable to various gateway apparatuses processing various application profiles such as an HA profile controlling and sensing home appliances, an SE profile providing an AMI service, a TA profile providing mobile services or the like. | 2011-06-23 |
20110149984 | CONFIGURATION MEMORY APPARATUS IN FPGA AND ROUTER SYSTEM USING THE SAME - Disclosed are a configuration memory apparatus and a router system using the same. The configuration memory apparatus includes: a selection unit selecting one of a first external device and a storage unit and receiving data; a register storing input data received from the selection unit; a storage unit storing data received from the register; and an I/O unit controlling transmission and reception of data to and from the register and a second external device. | 2011-06-23 |
20110149985 | DATA PROCESSING APPARATUS AND METHOD OF CONTROLLING THE SAME - Provided is a data communication technique in which overhead is reduced. A data processing apparatus includes a plurality of modules each of which executes data processing; a plurality of routers, which have input ports and output ports, for relaying data transmission among the plurality of modules; and a control unit for outputting a control signal to each of the plurality of routers to thereby control selection of router path. Each of the plurality of routers has a deciding unit for deciding an output port and output timing used in data transmission by utilizing a value of the control signal that has been input thereto. | 2011-06-23 |
20110149986 | SWITCHING HUB, LINE CARD AND FRAME RELAY METHOD - A switching hub includes a plurality of ports including receiving ports for receiving a frame from outside and transmitting ports for transmitting the frame to outside, a distributed ID calculation portion for calculating a distributed ID based on the frame received by one of the receiving ports of the plurality of ports and adding the distributed ID to the frame, a first distribution table that stores a port ID for identifying the transmitting port for transmitting the frame associated with the distributed ID to outside, a second distribution table that stores the port ID associated with the distributed ID so that the correspondence relation is different from that of the first distribution table, a distribution table identification information adding portion for adding first table identification information for identifying the first distribution table or second table identification information for identifying the second distribution table to the frame, and a transmission distribution table access portion for obtaining the port ID stored in the first or second distribution table so as to be associated with the distributed ID that is added to the frame by referring to the first distribution table when the first table identification information is added to the frame and by referring to the second distribution table when the second table identification information is added to the frame. | 2011-06-23 |
20110149987 | System and Method for Route Data in an Anycast Environment - A method of routing data in a network includes sending an instruction to a router to statically route outbound traffic to a firewall farm having an anycast address, identifying prefixes of endpoints that communicate with router, instructing a firewall router to send a route advertisement to the network announcing that the firewall router is the subsequent best hop for data bound for the endpoints, detecting a change in network condition, and sending another instruction to the router to route outbound traffic to another firewall farm having the anycast address after detecting the change. | 2011-06-23 |
20110149988 | COMMUNICATION CONTROLLER - A switch includes: a packet buffer including a plurality of segments for temporarily storing a packet to be relayed, using a segment of a fixed size as a unit of management of a storage area; an input processor configured to receive a packet to be relayed from an external source, refer to an offset, indicating a location in a segment where a free area starts, store a first packet, starting at the location in the segment indicated by the offset, update the location of start indicated by the offset in accordance with the packet size, and store a second packet, starting at the location of start in the segment thus updated; and an output processor configured to read the first and second packets and send the packets to a communication node. | 2011-06-23 |
20110149989 | INSTRUCTION SET FOR PROGRAMMABLE QUEUING - A traffic manager includes an execution unit that is responsive to instructions related to queuing of data in memory. The instructions may be provided by a network processor that is programmed to generate such instructions, depending on the data. Examples of such instructions include (1) writing of data units (of fixed size or variable size) without linking to a queue, (2) re-sequencing of the data units relative to one another without moving the data units in memory, and (3) linking the previously-written data units to a queue. The network processor and traffic manager may be implemented in a single chip. | 2011-06-23 |
20110149990 | ENERGY EFFICIENCY WITH RATE ADAPTATION - A system and method of rate adaptation is disclosed for energy efficiency. The system and method of rate adaptation for energy efficiency provides for parsing a heterogeneous network into rate-adaptation domains that are fully isolated with respect to the control of their operating states. The system and method is particularly useful for creating the conditions for the incremental introduction of rate-adaptive devices in existing networks; combining the best properties of sleep-state exploitation and rate scaling techniques by defining a class of state-setting policies for rate adaptation schemes that enforce tight deterministic bounds on the extra delay that the schemes may cause to network traffic at every node where they are deployed. | 2011-06-23 |
20110149991 | BUFFER PROCESSING METHOD, A STORE AND FORWARD METHOD AND APPARATUS OF HYBRID SERVICE TRAFFIC - The present invention provides a cache processing method, a storing and forwarding method and apparatus of hybrid service flows. The cache processing method comprises: configuring at least one port cache area for each input port receiving the hybrid service flows, and configuring at least one type cache area for each service type of the hybrid service flows; storing control information of each data packet into the port cache area of the corresponding port according to a source port of the data packet; and indentifying the service type of the data packet from the control information of the data packet, and storing the acquired control information of the data packet into the type cache area of the corresponding service type according to the service type of the data packet. The present invention allows each type of data packets from each port to have an independent processing procedure. | 2011-06-23 |
20110149992 | METHOD AND APPARATUS FOR IMPOSING PREFERENCES ON BROADCAST/MULTICAST SERVICE - An apparatus for imposing preferences on broadcast/multicast service for an end-user is described herein. The apparatus includes a first tuner that receives a first set of data transmitted from a currently selected broadcast/multicast station, wherein the first set of data includes time, station identification, and program information; a second tuner that receives a second set of data from a plurality of broadcast/multicast stations, wherein the second set of data includes individually, for each broadcast/multicast station that is available, time, station identification, and program information; a decoder that decodes the first and second sets of data received by the first and second tuners and sends this decoded data to a decision engine for further processing; and a persona database that stores a plurality of user preference profiles. Further, the decision engine is periodically operative to evaluate the currently selected station, and choose a different station if applicable, based on a preference profile selected by the end-user. | 2011-06-23 |
20110149993 | METHOD OF AIDING THE RESERVATION OF RESOURCES FOR A PACKET NETWORK, AND ASSOCIATED MANAGEMENT DEVICE AND AID DEVICE - A method intended to aid in the reservation of resources within a packet-switched communication network comprising a number N of relaying nodes. This method consists i), in determining for some at least of the N nodes at least one resource reservation plan Pik defined by a plan identifier associated with a stream identifier and at least two ports, and ii) in memorizing for each of the N nodes the various plans Pik relating to them. | 2011-06-23 |
20110149994 | COMMUNICATION MODULE AND METHOD FOR CONNECTING AN ELECTRICAL DEVICE TO A NETWORK - A communication module for connecting electrical host devices, each with an individual physical interface, to different external networks, where the communication module is connected to the host device via an interface and provides at least two physical interfaces, and where the communication module has a network connector which is adapted to the respective external network. In order to enable development of communication modules independently of the individual host device and to reuse them for many different host devices, provision is made for the host device to have a processor for identifying the communication module and for selecting the at least one physical interface which is suitable for the host device by means of serial communication. | 2011-06-23 |
20110149995 | COORDINATION INDEPENDENT RATE ADAPTATION DEPLOYMENT METHODS AND SYSTEMS - A method and system of coordination independent rate adaptation is disclosed. The method and system of coordination independent rate adaptation provides for deploying a rate adaptation subdomain into a packet network having no rate adaptation coordination among the network nodes. The method and system is particularly useful for incremental introduction of rate-adaptive devices in existing networks; combining the best properties of sleep-state exploitation and rate scaling techniques by defining a class of state-setting policies for rate adaptation schemes that enforce tight deterministic bounds on the extra delay that the schemes may cause to network traffic at every node where they are deployed. | 2011-06-23 |
20110149996 | COMMUNICATION CONTROL METHOD, COMMUNICATION APPARATUS, AND COMMUNICATION SYSTEM - Disclosed herein is a communication control method employed by a communication apparatus that includes a primary communication interface and a plurality of relay communication interfaces and has a communication interface coupling function of transferring a transmission/reception frame of the primary communication interface through one of the plurality of relay communication interfaces. The method includes the steps of: acquiring traffic information concerning the primary communication interface; and dynamically varying a transfer allocation ratio between the plurality of relay communication interfaces based on the traffic information. | 2011-06-23 |
20110149997 | DATA TRANSMISSION METHOD FOR HSDPA - In the data transmission method of an HSDPA system according to the present invention, a transmitter transmits Data Blocks each composed of one or more data units originated from a same logical channel, and a receiver receives the Data Block through a HS-DSCH and distributes the Data Block to a predetermined reordering buffer. Since each Data Block is composed of the MAC-d PDUs originated from the same logical channel, it is possible to monitor the in-sequence delivery of the data units, resulting in reduction of undesirable queuing delay caused by logical channel multiplexing. | 2011-06-23 |
20110149998 | METHOD AND SYSTEM FOR TIMESTAMP INCLUSION IN VIRTUAL LOCAL AREA NETWORK TAG - A method, system and apparatus time-stamp a data frame. The data frame includes a type field and data for transmission to a communication network. The data frame is received and a reception time for the data frame is determined. The value of the type field is determined. If the value of the type field indicates the data frame is a time-stamped frame, a timestamp field is inserted in the data frame. The timestamp field indicates the reception time. | 2011-06-23 |
20110149999 | RECEPTION APPARATUS, RECEPTION METHOD, AND RECEPTION PROGRAM - A reception apparatus is configured to receive data including a plurality of packets each of which has information on a time point when the packet is generated; to extract a terminal packet which is a packet included in the data received and which has information on a time point which is nearest to a current time point; and to control an operation clock by comparing the information on the time point included in the terminal packet with information on an elapsed time obtained by adding information on a time point, which is included in a terminal packet of preceding data, to an elapsed time from when the preceding data is received to the current time point. | 2011-06-23 |
20110150000 | METHOD FOR CONFIGURING PREAMBLE FOR COMMUNICATION SYSTEM, PREAMBLER, AND APPARATUS FOR GENERATING PACKET USING THE SAME - Disclosed are a method for configuring a preamble for a communication system in order to effectively use a packet transmission bandwidth, a preambler, and an apparatus for generating a packet using the same. The preambler includes: a mode determining unit receiving frame characteristics information, extracting frame information to be transmitted through a preamble, and determining a transmission mode corresponding with the extracted information; and a code generation unit receiving the transmission mode information which has been determined by the mode determining unit and generating a preamble made up of a combination of sub-preamble code strings corresponding with the transmission mode. | 2011-06-23 |
20110150001 | TRANSMITTING SYSTEM AND METHOD FOR TRANSMITTING DIGITAL BROADCAST SIGNAL - A transmitting system and a method of transmitting digital broadcast signal are disclosed. The method of transmitting digital broadcast signal includes generating signaling data including a transmission parameter, wherein the transmission parameter includes a protocol version field identifying between a first transmission mode and a second transmission mode, forming a data group including mobile service data and the signaling data, forming mobile service data packets including the mobile service data and the signaling data in the data group, transmitting the digital broadcast signal including the data group. | 2011-06-23 |
20110150002 | SYSTEM AND METHOD FOR PREVENTING LEAK OF PERSONAL INFORMATION - Provided are a system and method for preventing a leak of personal information. According to embodiments of the present invention, when a packet includes a field associated with the personal information, information including the field associated with the personal information may be modified, and thereby may prevent the leak of personal information with respect to a traffic-collecting device in an Internet network system. | 2011-06-23 |
20110150003 | METHOD AND ARRANGEMENT TO INCREASE THE DATA TRANSMISSION FLOW RATE IN A COMMUNICATION SYSTEM - A method and apparatus to transfer data cells having an overhead section and a payload section via a communication medium from a transmitter to a receiver. Before transfer of a data cell, the overhead section of the data cell is translated into a shortened overhead section, known both on the transmitter and the receiver sides, and upon reception of the data cell, the shortened overhead section is translated again into the overhead section. | 2011-06-23 |
20110150004 | ENHANCED MULTI-USER TRANSMISSION - The present invention relates to a transmitting apparatus, a receiving apparatus, a system and a method of performing multi-user transmission to a plurality of other transmission ends ( | 2011-06-23 |
20110150005 | Network Slave Node and Time Synchronization Method in Network Applying the Same - Provided are a network slave node and a time synchronization method using precision time protocol-like (PTP-like) in a network. The network slave node includes a packet detection unit for detecting whether the slave node receives or sends a synchronization protocol packet and recording a synchronization protocol packet receiving time and a synchronization protocol packet sending time; a hardware clock; and a control unit controlling the packet detection unit and the hardware clock. The control unit reads out the packet receiving time and the packet sending time from the packet detection unit and informs a local master node. The local master node calculates a time offset between the local master node and the slave node, and informs the control unit. The control unit adjusts the hardware clock based on the time offset so that the local master node and the slave node are time synchronized. | 2011-06-23 |
20110150006 | DE-ENCAPSULATION OF DATA STREAMS INTO MULTIPLE LINKS - Embodiments of the invention are generally directed to de-encapsulation of data streams into multiple links. An embodiment of a method includes receiving a data stream including multiple data frames, the data stream being in a first mode having a multiple channels of content data including a first channel sent in a first position in each data frame and a second channel sent in a second position in each data frame following the first position, with each data frame including a synchronization signal to indicate a start of the content data. The method further includes transforming the data stream into data sub-streams in a second mode, the data sub-streams including a first data sub-stream to carry data for the first channel in the second mode and a second data sub-stream to carry data for the second channel in the second mode. Transforming the data stream into in the plurality of data sub-streams includes generating the first data sub-stream by stripping the second channel from each frame of data, and generating the second data sub-stream by stripping the first channel and the synchronization signal from each frame and inserting a substitute synchronization signal before the second channel data in each data frame. The method further includes transmitting the first data sub-stream via a first link in the second mode and the second data sub-stream via a second link in the second mode. | 2011-06-23 |
20110150007 | CLOCK OPERATING METHOD AND APPARATUS FOR SUPPORTING ETHERNET PHYSICAL LAYER INTERFACES - Provided is a clock operating method and apparatus for supporting a plurality of Ethernet physical layer interfaces. To provide a network synchronization function in a board of simultaneously accommodating the plurality of Ethernet physical layer interfaces, the clock operating method may include: determining a physical layer interface according to a current network synchronization mode; and generating a clock signal of the determined physical layer interface as a reference signal of another physical layer interface. | 2011-06-23 |
20110150008 | AUTOMATIC MANAGEMENT OF TIMESTAMP-BASED SYNCHRONISATION PROTOCOLS - A method for automatic management of a timestamp-based synchronization protocol within a packet-based network to synchronize a slave within a synchronization topology including a plurality of masters, the slave clock being locked to a master clock at an initialization time, said method comprising an assessment step of end-to-end packet delay variation on the basis of the slave clock accuracy, over a plurality of (slave, path, master) combinations, each path linking the slave to a master. | 2011-06-23 |
20110150009 | POINTER PROCESSING APPARATUS AND POINTER PROCESSING METHOD - A pointer processing apparatus includes a first synchronizing unit to bring a receive frame synchronized with a first clock into synchronization with a second clock, and a first stuffing unit to perform stuffing on the receive frame synchronized with the second clock, in accordance with a value of a pointer byte included in the receive frame. | 2011-06-23 |
20110150010 | VERY LARGE MODE SLAB-COUPLED OPTICAL WAVEGUIDE LASER AND AMPLIFIER - A very large mode (VLM) slab-coupled optical waveguide laser (SCOWL) is provided that includes an upper waveguide region as part of the waveguide for guiding the laser mode. The upper waveguide region is positioned in the interior regions of the VLM SCOWL. A lower waveguide region also is part of the waveguide that guides the laser mode. The lower waveguide region is positioned in an area underneath the upper waveguide region. An active region is positioned between the upper waveguide region and the lower waveguide region. The active region is arranged so etching into the VLM SCOWL is permitted to define one or more ridge structures leaving the active region unetched. One or more mode control barrier layers are positioned between said upper waveguide region and said lower waveguide region. The one or more mode control barrier layers control the fundamental mode profile and prevent mode collapse of the laser mode. The mode control barrier layers also block carrier leakage from the active region. These layers are essential to obtaining VLM SCOWLs. | 2011-06-23 |
20110150011 | RESONANTLY PUMPED TM DOPED CYRSTALLINE LASERS - A resonantly pumped, trivalent thulium ion (Tm3+) doped, crystal laser with improved efficiency is disclosed. Embodiments are pumped from the 3H6 ground state manifold to the 1st excited 3F4 state manifold by photons with wavelengths between 1.4 and 2.2 microns and laser wavelengths ranging from 1.5 to 2.4 microns arising from 3F4 to 3H6 transitions ensue, with output wavelengths dependant upon the choice of pump wavelength, crystalline host, and resonator optics. | 2011-06-23 |
20110150012 | PASSIVELY Q-SWITCHED SIDE PUMPED MONOLITHIC RING LASER - Disclosed herein are systems and methods for generating a side-pumped passively Q-switched non-planar ring oscillator. The method introduces a laser into a cavity of a crystal, the cavity having a round-trip path formed by a reflection at a dielectrically coated front surface, a first internal reflection at a first side surface of the crystal at a non-orthogonal angle with the front, a second internal reflection at a top surface of the crystal, and a third internal reflection at a second side surface of the crystal at a non-orthogonal angle with the front. The method side pumps the laser at the top or bottom surface with a side pump diode array beam and generates an output laser emanating at a location on the front surface. The design can include additional internal reflections to increase interaction with the side pump. Waste heat may be removed by mounting the crystal to a heatsink. | 2011-06-23 |
20110150013 | RESONANT PUMPING OF THIN-DISK LASER WITH AN OPTICALLY PUMPED EXTERNAL-CAVITY SURFACE-EMITTING SEMICONDUCTOR LASER - Laser apparatus comprises a solid-state laser-resonator including a thin-disk solid-state gain-medium. The thin-disk gain medium is optically pumped using radiation circulating in an OPS-laser resonator. The solid-state laser-resonator can be a passively mode-locked or actively Q-switched laser-resonator. | 2011-06-23 |
20110150014 | ANALOG TEMPERATURE CONTROL FOR TUNABLE LASERS - An analog circuit including a voltage divider for providing a first voltage corresponding to an actual temperature of said thermal tuning element of the laser; an analog comparator generating an analog output current for comparing the first voltage with a reference voltage, the reference voltage being representative of a temperature of said thermal tuning element of the laser corresponding to a desired wavelength of the laser; and a heating element thermally coupled to said thermal tuning element, wherein the analog comparator increases said analog current to the heating element, when the first voltage is less than the reference voltage; and decreases said analog current to the heating element, when the first voltage is larger than the second reference voltage. | 2011-06-23 |
20110150015 | Generation of frequency-pre-selectable radiation by using more than one cascaded frequency conversion processes of resonantly enhanced beams - The invention describes methods and apparatus for the generation of laser radiation with pre-selectable frequency, which could be bigger or smaller than its fundamental beam frequency, through a combination of two or more intracavity frequency conversion processes of two or more resonantly enhanced beams. These techniques are particularly useful for generating continuous wave tunable frequency radiation in uv, visible and infrared wavelength ranges. These processes can be a combination of an intracavity fundamental beam pumped optical parametric oscillation (OPO) and an intracavity sum- or difference-frequency-mixing of the fundamental laser beam with an OPO generated beam and an intracavity frequency doubling the optical parametrical generated signal or idler beam to desirable frequencies for continuous wave. These plural intracavity nonlinear processes can be a combination of an intracavity or resonantly cavity-build-up fundamental beam pumped OPO and another frequency conversion within this OPO and the fundamental cavity. These intracavity enhanced frequency conversion processes allow for minimizing the parent frequency beams' losses and increasing the final conversion and, particularly, highly efficient conversion for continuous waves. | 2011-06-23 |
20110150016 | TUNABLE LASER MODULE - Provided is a tunable laser module emitting an optical signal having high speed, high power and wideband wavelength tuning. The tunable laser module includes a laser array configured to emit an optical signal having a plurality of different lasing wavelengths, a temperature controller configured to change a temperature of the laser array, and an optical integration device configured to modulate or amplify the optical signal at a side of the laser array opposing the temperature controller. | 2011-06-23 |
20110150017 | Relaxed InGaN/AlGaN Templates - A relaxed InGaN template employs a GaN or InGaN nucleation layer grown at low temperatures on a conventional base layer (e.g., sapphire). The nucleation layer is typically very rough and multi-crystalline. A single-crystal InGaN buffer layer is then grown at normal temperatures. Although not necessary, the buffer layer is typically undoped, and is usually grown at high pressures to encourage planarization and to improve surface smoothness. A subsequent n-doped cap layer can then be grown at low pressures to form the n-contact of a photonic or electronic device. In some cases, a wetting layer—typically low temperature AlN—is grown prior to the nucleation layer. Other templates, such as AlGaN on Si or SiC, are also produced using the method of the present invention. | 2011-06-23 |
20110150018 | LASER DEVICE - Provided is a laser device. In the laser device, an active layer is connected to a stem core of a 1×2 splitter on a substrate, a first diffraction grating is coupled to a first twig core of the 1×2 splitter, and a second diffraction grating is coupled to a second twig core of the 1×2 splitter. An active layer-micro heater is designed to supply heat to the active layer. First and second micro heaters are designed to supply heats to the first and second diffraction gratings, respectively, thereby varying a Bragg wavelength. | 2011-06-23 |
20110150019 | MONOCHROMATIC LIGHT SOURCE - Light emitting systems are disclosed. The light emitting system includes an electroluminescent device that emits light at a first wavelength. The light emitting system further includes an optical cavity that enhances emission of light from a top surface of the light emitting system and suppresses emission of light from one or more sides of the light emitting system. The optical cavity includes a semiconductor multilayer stack that receives the emitted first wavelength light and converts at least a portion of the received light to light of a second wavelength. The semiconductor multilayer stack includes a II-VI potential well. The integrated emission intensity of all light at the second wavelength that exit the light emitting system is at least 10 times the integrated emission intensity of all light at the first wavelength that exit the light emitting system. | 2011-06-23 |
20110150020 | II-VI MQW VSCEL ON A HEAT SINK OPTICALLY PUMPED BY A GAN LD - Light sources are disclosed. A disclosed light source includes a III-V based pump light source ( | 2011-06-23 |
20110150021 | DIODE LASER, INTEGRAL DIODE LASER, AND AN INTEGRAL SEMICONDUCTOR OPTICAL AMPLIFIER - Invention relates to three types of laser light sources: diode laser, integral diode laser (in form of integrally connected diode lasers) and integral semiconductor optical amplifier (in form of integrally connected driving laser diode and semiconductor amplifier element), which amplifier consists of original optical resonator of diode laser and original laser radiation coupling. Two reflectors in optical resonator of diode laser, which falls into three types of above-mentioned laser radiation sources, have greatest possible reflection factor on both sides thereof and radiation coupling from active layer is carried out, by-passing active layer, through broadband semiconductor layers of the modified heterostructure of diode laser with practically fully antireflective (less than 0.01%) optical face. Invention makes it possible to design superpower, high-performance, high-speed and reliable three types of sources of single-frequency, single-mode and multi-mode high quality laser radiation in broad wavelength band, to simplify the production and cut in production costs thereof. | 2011-06-23 |
20110150022 | GAN LASER ELEMENT - In a GaN-based laser device having a GaN-based semiconductor stacked-layered structure including a light emitting layer, the semiconductor stacked-layered structure includes a ridge stripe structure causing a stripe-shaped waveguide, and has side surfaces opposite to each other to sandwich the stripe-shaped waveguide in its width direction therebetween. At least part of at least one of the side surfaces is processed to prevent the stripe-shaped waveguide from functioning as a Fabry-Perot resonator in the width direction. | 2011-06-23 |
20110150023 | NITRIDE SEMICONDUCTOR LASER DEVICE - A nitride semiconductor laser device includes: a stack, the stack including an n-type layer and a p-type layer each including a nitride semiconductor; an n-electrode electrically coupled to the n-type layer; a p-electrode electrically coupled to the p-type layer; and a thermally conductive portion disposed in contact with the p-type layer in a region which is different from the region where the p-electrode is connected, wherein the thermally conductive portion is electrically insulated from the p-electrode. Manufacturing steps specific to nitride semiconductors are employed to form the device. An optical apparatus, such as an optical disc device, a display device, or a lighting device includes such a nitride laser device and depends its functions thereto. | 2011-06-23 |
20110150024 | HYBRID LASER COUPLED TO A WAVEGUIDE - A method for introducing light into a waveguide formed on the upper surface of a microelectronics substrate, by means of a distributed feedback laser device formed by the association of an SOI-type structure having a portion forming said waveguide, of a stack of III-V semiconductor gain materials partially covering the waveguide, and of an optical grating, wherein the grating step is selected so that the optical power of the laser beam circulates in a loop from the III-V stack to the waveguide. | 2011-06-23 |
20110150025 | SURFACE EMITTING LASER, MANUFACTURING METHOD OF SURFACE EMITTING LASER, SURFACE EMITTING LASER ARRAY, MANUFACTURING METHOD OF SURFACE EMITTING LASER ARRAY, AND OPTICAL APPARATUS INCLUDING SURFACE EMITTING LASER ARRAY - A surface emitting laser which is configured by laminating on a substrate a lower reflection mirror, an active layer, and an upper reflection mirror, which includes, in a light emitting section of the upper reflection mirror, a structure for controlling reflectance that is configured by a low reflectance region and a concave high reflectance region formed in the central portion of the low reflectance region, and which oscillates at a wavelength of λ, wherein the upper reflection mirror is configured by a multilayer film reflection mirror based on a laminated structure formed by laminating a plurality of layers, the multilayer film reflection mirror includes a phase adjusting layer which has an optical thickness in the range of λ/8 to 3λ/8 inclusive in a light emitting peripheral portion on the multilayer film reflection mirror, and an absorption layer causing band-to-band absorption is provided in the phase adjusting layer. | 2011-06-23 |
20110150026 | SEMICONDUCTOR LASER PUMPED SOLID-STATE LASER DEVICE FOR ENGINE IGNITION - There is provided a semiconductor laser pumped solid-state laser device for engine ignition that can stably provide optical energy required for ignition across a wide temperature range. In the semiconductor laser pumped solid-state laser device for engine ignition, a plurality of semiconductor lasers | 2011-06-23 |
20110150027 | MECHANICAL AND ELECTRONIC TEMPERATURE READING SYSTEM WITH BUILT-IN FAILURE AND INACCURACY DETECTION - Temperature-indicting system including a mechanical temperature-indicating system including a bourdon tube for directly driving an indicating pointer, and an electrical temperature-indicating system including an electronic sensor, a transmitter and one or more electrical switches. The transmitter is modular and easily replaceable. Output of the pointer and the transmitter is synchronized relative to accuracy so that comparison of switch points of the switches that correlate temperature determined by the mechanical system and temperature determined by the electronic system enables detection of a failure or inaccuracy in one or both systems. | 2011-06-23 |
20110150028 | SELF-CALIBRATION CIRCUIT AND METHOD FOR JUNCTION TEMPERATURE ESTIMATION - The present invention relates to a calibration circuit, computer program product, and method of calibrating a junction temperature measurement of a semiconductor element, wherein respective forward voltages at junctions of the semiconductor element and a reference temperature sensor are measured, and an absolute ambient temperature is determined by using the reference temperature sensor, and the junction temperature of the semiconductor element is predicted based on the absolute ambient temperature and the measured forward voltages. | 2011-06-23 |
20110150029 | APPARATUS AND METHODS FOR TEMPERATURE CALIBRATION AND SENSING - Some embodiments include apparatus and methods having a first switch, a second switch, and a circuit coupled to the first and second switches. The first switch may be configured to switch between an on-state and an off-state based on a value of a first current flowing through a number of resistors and a diode coupled in series with the resistors. The second switch may be configured to switch between the on-state and the off-state based on a value of a second current on a circuit path. The second current is a function of a voltage at a node between two of the resistors and a resistance of the circuit path. The circuit may be configured to provide a temperature reading based on the number of times the first switch or the second switch switches between the on-state and the off-state during a time interval. | 2011-06-23 |
20110150030 | THERMAL SENSORS HAVING FLEXIBLE SUBSTRATES AND USE THEREOF - Methods and apparatuses for Micro-Electro-Mechanical Systems (MEMS) resonator to monitor the platform temperature. Fabricating the resonator on a relatively low cost flexible polymer substrate rather than silicon provides mechanical flexibility as well as design flexibility with respect to sensor placement. Sensor readout and control circuits can be on silicon if desired, for example, a positive feedback amplifier to form an oscillator in conjunction with the resonator and a counter to count oscillator frequency. | 2011-06-23 |
20110150031 | THERMAL SENSOR USING A VIBRATING MEMS RESONATOR OF A CHIP INTERCONNECT LAYER - Methods and apparatuses for Micro-Electro-Mechanical Systems (MEMS) resonator to monitor temperature in an integrated circuit. Fabricating the resonator in an interconnect layer provides a way to implement thermal detection means which is tolerant of manufacturing process variations. Sensor readout and control circuits can be on silicon if desired, for example, a positive feedback amplifier to form an oscillator in conjunction with the resonator and a counter to count oscillator frequency. | 2011-06-23 |
20110150032 | Furnace Temperature Monitoring Device and Method - A method for measuring the temperature at various locations in a furnace adapted to heat-treat a metal part commences by placing one or more devices at various location within the furnace. Each device is an inorganic/metallic skeletal structure residual from firing a mixture of binder and one or more of inorganic or metallic particles at a temperature that chars the binder to form the inorganic/metallic skeletal structure of a determined shape. A physical parameter of the skeletal structure determined shape is monitored after firing of the furnace. Then, the monitored physical parameter is compared to a plot of temperature versus the physical parameter to determine the temperature of the furnace at the various locations. | 2011-06-23 |
20110150033 | Fatigue Resistant Thermowell and Methods - Methods and thermowell systems that can be uses in high dynamic pressure environments. A thermocouple system includes a thermowell configured to enter a structure through which a medium flows; an elongated probe provided partially inside the thermowell and configured to measure a temperature; at least one o-ring disposed around the elongated probe at a first end, the o-ring being configured to dampen a vibration for the elongated probe by contacting the thermowell; and an elastomer disposed around the elongated probe section at a second end, the elastomer being configured to dampen the vibration for the elongated probe by contacting the thermowell. | 2011-06-23 |
20110150034 | Sanitary clean in place thermowell - A resistance temperature detector (RTD) assembly ( | 2011-06-23 |
20110150035 | NON-INTRUSIVE METHOD FOR SENSING GAS TEMPERATURE AND SPECIES CONCENTRATION IN GASEOUS ENVIRONMENTS - The invention relates generally to a non-intrusive method for sensing gas temperature and species concentration in gaseous environments. The method includes the steps of providing a tunable diode laser (TDL) sensor having a plurality of robust telecommunications diode lasers and a detector. The method further includes the steps of positioning the TDL sensor in alignment with an optical port of a vessel; using the lasers to transmit light through the optical port; using the detector to receive the transmitted light and transmit a signal to a data collection device; determining a ratio of absorbance for different absorption transitions; and determining a gas temperature from the ratio of absorbance. | 2011-06-23 |
20110150036 | FLEXIBLE THERMOELECTRIC GENERATOR, WIRELESS SENSOR NODE INCLUDING THE SAME AND METHOD OF MANUFACTURING THE SAME - Provided are a flexible thermoelectric generator, a wireless sensor node including the same and a method of manufacturing the same. The flexible thermoelectric generator includes a plurality of P-type semiconductors and a plurality of N-type semiconductors, which are alternately arranged, an upper metal for connecting upper surfaces of the adjacent P-type semiconductor and N-type semiconductor, a lower metal for connecting lower surfaces of the adjacent P-type semiconductor and N-type semiconductor, and alternately disposed with respect to the upper metal, a P-type metal connected to at least one P-type semiconductor among the plurality of P-type semiconductors, and an N-type metal connected to at least one N-type semiconductor among the plurality of N-type semiconductors. | 2011-06-23 |
20110150037 | COVER FOR SHAFT OF ELECTRONIC THERMOMETER PROBE - A cover for a shaft of an electronic thermometer probe. The cover includes a tubular body having an open end and a closed end opposite the open end. The body defines a cavity sized and shaped to slidably receive the shaft of the electronic thermometer probe. At least a portion of the tubular body is formed from a nanotube composite material including a polymer matrix material and a carbon nanotube filler material. | 2011-06-23 |
20110150038 | SYSTEM AND METHOD FOR UWB TRANSMISSION PREDISTORTION AND RF WIRE-BOND INTERFACE TECHNIQUE RELATED APPLICATION - A method and a system, the system includes: an analog base-band pre-distorter arranged to receive in-phase (I) baseband signals and Quadrature (Q) baseband signals, and to amplify the I baseband signals and the Q baseband signals by a gain function to provide amplified I baseband signals and amplified Q baseband signals; wherein the gain function is responsive to a sum of (a) a square of amplitudes of the I baseband signals and, (b) a square of amplitudes of the B baseband signals; a frequency converter arranged to convert the amplified I and Q baseband signals to radio frequency (RF) signals; an RF amplifier that is arranged to amplify the RF signals to provide amplified RF signals and to output differential RF signals that represent the amplified RF signals through first and second differential output ports of the RF amplifier; a balun comprising a first and second balanced input ports and a single unbalanced output port; and multiple wire-bonds coupled between the balun and the first and second differential output ports of the RF amplifier; wherein at least one wire-bond serve as potential shunt inductor. | 2011-06-23 |
20110150039 | DEVICE FOR DATA TRANSFER, COMPUTED TOMOGRAPHY APPARATUS AND METHOD FOR DATA TRANSFER - In a device and a method for data transfer between a rotatable part and stationary part of a gantry of a computed tomography apparatus a broadband transmission link is used for data between the rotatable part and the stationary part of the gantry, via which both measurement data and operating data of the computed tomography apparatus are transferred. An arrangement also is provided for narrowband transmission of data of the computed tomography apparatus via the broadband transmission link. The data of the computed tomography apparatus are transmitted using a frequency spread method via the broadband transmission link. | 2011-06-23 |
20110150040 | APPARATUS OF 60 GHZ BAND MODEM - An ultra wideband (UWB) communication modem includes an interface configured to transceive data in connection with a host device, a baseband processor configured to process, in a parallel manner, a baseband signal being transceived between the interface and a parallel/serial converter, the parallel/serial converter configured to combine a parallel signal into a serial signal and output the serial signal, and separate a serial signal into a parallel signal and output the parallel signal, a radio frequency (RF) processor configured to reduce a frequency of a received UWB signal and transmit the frequency-reduced signal to the parallel/serial converter, and increase a frequency of the serial signal received from the parallel/serial converter and transmit the frequency-increased signal to a directional antenna, and the directional antenna configured to transceive a wireless signal by forming a directional beam and control a direction of the directional beam. | 2011-06-23 |
20110150041 | MOBILE COMMUNICATION METHOD AND EXCHANGE STATION - A mobile communication method according to the present invention includes step of causing a mobile station | 2011-06-23 |
20110150042 | DATA TRANSMISSION METHOD, NETWORK DEVICE, AND COMMUNICATION SYSTEM - A data transmission method, a network device, and a communication system are provided. The method includes: acquiring a frequency hopping time period and frequency hopping information when reliable transmission is required; transmitting data according to the frequency hopping information in the frequency hopping time period. Thus, the reliability of data transmission is ensured, the original network is not changed significantly, and the system overhead and resources are saved. | 2011-06-23 |
20110150043 | FREQUENCY HOPPING RECEIVER CIRCUIT - A frequency hopping receiver circuit has a frequency converter ( | 2011-06-23 |
20110150044 | Methods for Fast and Low-Power UWB IR Baseband Receiver Synchronization - The invention relates to methods for synchronising a device to a signal containing a train of pulses representing a programmable number of repetitions of a predetermined code. Pulse position and code phase are searched for. In a first aspect, a programmable number of samples is taken per pulse frame in function of the available number of repetitions of said predetermined code. In a second aspect, the method comprises a signal detection stage from which, after performing a confirmation stage, information can be kept for a subsequent stage. In a third aspect, only a limited number of rotated versions of the predetermined code are checked, using a presumed code phase which is kept from a preceding stage. | 2011-06-23 |
20110150045 | System and Method for an Intelligent Radio Frequency Receiver - A method a system for receiving signals from plural frequency bands and plural communication protocols. An interchangeable radio frequency (“RF”) front end may receive RF signals from plural frequency bands and plural communication protocols. Intermediate frequency (“IF”) circuitry may produce one or more common IF signals from the received RF signals. A common digital back end may then receive digitized versions of the IF signals, modify IF signal bandwidth as a function of the plural communication protocols, and process plural received signals without knowledge of the underlying communication protocols. | 2011-06-23 |
20110150046 | RECEIVER FOR REAL TIME LOCATING SYSTEM AND METHOD OF RECEIVING SIGNAL IN REAL TIME LOCATING SYSTEM - Provided are a receiver for a real time locating system (RTLS) and a method of receiving a signal in the RTLS. The receiver includes a down converter converting a radio frequency (RF) signal into a base band signal, a matched filter filtering the converted signal using an optimal receiving filter in view of a signal-to-noise ratio (SNR) such as a shaping filter used for a transmitter, an adaptive transversal filter (ATF) estimating an interference signal with an output of the matched filter, and filtering the output to remove interference of a heterogeneous signal of the same frequency band, a de-spreader multiplying an output of the matched filter and a code according to DSSS modulation used for spreading when a tag signal is modulated, and performing chip-matched filtering to obtain a value of correlation energy, and a detector detecting original transmission data using the correlation energy value. | 2011-06-23 |
20110150047 | METHOD AND SYSTEM FOR EFFICIENT DSSS FFT PROCESSING EMPLOYING PRIME FACTOR DECOMPOSITION - A direct-sequence spread spectrum (DSSS) receiver may be operable to process signal samples in frequency domain utilizing a prime factor fast Fourier transform (FFT) circuit and a pseudorandom noise (PRN) code. The DSSS receiver may be operable to transform the signal samples into FFT signal samples using the prime factor FFT circuit, transform the PRN code into a FFT PRN code using the prime factor FFT circuit and multiply the FFT signal samples with the FFT PRN code using the prime factor FFT circuit. The DSSS receiver may be operable to inversely transform the multiplied FFT signal samples into correlated signal samples using a prime factor inverse FFT (IFFT) implemented by the prime factor FFT circuit. The prime factor FFT circuit may comprise a prime length FFT core, a FFT memory, a register bank, a switch, a multiplier and a FFT controller. | 2011-06-23 |
20110150048 | Telecommunication Signaling Using Nonlinear Functions - One exemplary embodiment can describe a method for communicating. The method for communicating can include a step for identifying characteristics of a communications channel, a step for identifying a set of nonlinear functions used to generate waveforms, a step for assigning a unique numeric code to each waveform, a step for transmitting a numeric sequence as a series of waveforms, a step for receiving the series of waveforms, and a step for decoding the series of waveforms. | 2011-06-23 |
20110150049 | MIMO CHANNEL LOOPBACK - A method and apparatus for efficiently providing a large volume of channel feedback, e.g., for OFDM MISO and MIMO systems, is described herein. To that end, a mapping unit in an OFDM transceiver maps channel feedback values, e.g., received reference signal values or channel estimates derived therefrom, on a one-to-one basis to individual transmission subchannels. More particularly, the mapping unit maps a feedback value, e.g., the received reference value or a channel estimate derived therefrom, to a single transmission subchannel of an outgoing OFDM signal. For example, the mapping unit may map the feedback value to an input of a frequency transform unit, such as an inverse discrete Fourier transform unit, to map the feedback value to a single transmission subchannel comprising an OFDM transmission subcarrier. The OFDM transceiver transmits the outgoing OFDM signal to the remote transceiver to provide the feedback value to the remote transceiver. | 2011-06-23 |
20110150050 | DIGITAL INTEGRATED ANTENNA ARRAY FOR ENHANCING COVERAGE AND CAPACITY OF A WIRELESS NETWORK - An embodiment of the invention relates to a digital integrated antenna array system having one or more antenna modules, one or more transceiver modules each having one or more signal processing paths for transmitting data to or receiving data from the one or more antenna modules, a signal processing unit able to process data for each the one or more signal processing paths of the one or more transceiver modules such that the data transmitted from the one or more transceiver modules to the one or more antenna modules is radiated by the one or more antenna modules into one or more radiation patterns. | 2011-06-23 |
20110150051 | Multi-Tone System with Oversampled Precoders - A multi-tone system includes a data transmission circuit with an interface for receiving a data stream for transmission, a data steam splitter that splits the data stream to produce multiple substreams and a plurality of parallel data preparation circuits. Each data preparation circuit prepares a respective substream for transmission and generates a respective sub-channel signal. At least a first data preparation circuit of the plurality of parallel data preparation circuits includes a first analog filter for filtering a first substream. The first analog filter operates at a sample rate greater than the respective symbol rate of the first substream. The first analog filter provides pre-emphasis of the respective sub-channel signal and attenuation of signals outside of a respective band of frequencies corresponding to the respective sub-channel signal. The data transmission circuit also includes a combiner for combining respective sub-channel signals to generate a data transmission signal. | 2011-06-23 |
20110150052 | MIMO FEEDBACK SCHEMES FOR CROSS-POLARIZED ANTENNAS - A method includes receiving a Multiple-Input Multiple Output (MIMO) signal over multiple communication channels from an antenna array including a first set of antennas having a first polarization and a second set of the antennas having a second polarization that is orthogonal to the first polarization. First feedback information is calculated relating to first interrelations between the antennas within either the first set or the second set. Second feedback information is calculated relating at least to second interrelations between the first set and the second set of the antennas. The first feedback information is transmitted at a first time/frequency granularity, and the second feedback information is transmitted at a second time/frequency granularity that is finer than the first time/frequency granularity. | 2011-06-23 |
20110150053 | METHOD OF DETECTING A RADAR SIGNAL, RADAR DETECTION MODULE, AND WIRELESS TRANSCEIVER INCLUDING THE SAME - A method and apparatus for detecting a radar signal is provided. The method includes collecting a plurality of pulses based on a reference time or a reference pulse collection count, classifying the plurality of pulses into groups based on similarity of pulse widths, classifying the groups into a short-pulse type and a long-pulse type and calculate the number of groups in each type, and determining whether a radar signal exists based on a number of groups in each type. | 2011-06-23 |
20110150054 | SWITCHING APPARATUS AND METHOD FOR WIRELESS COMMUNICATION SYSTEM - A switching apparatus in a wireless communication system using multi-channels includes: a first antenna unit configured to transmit and receive data of a first multi-channel among the multi-channels; a second antenna unit configured to transmit and receive data of a second multi-channel among the multi-channels; a first transceiver configured to receive the data from the first antenna unit and transmit the data to the first transceiver; and a selection unit configured to transmit an output of the second antenna unit to the first transceiver. | 2011-06-23 |
20110150055 | Active Auxiliary Channel Buffering - A system and a method for communicating configuration data between a source device and a sink are described. An active buffer receives data from an auxiliary communication channel which communicates data between the source device and the sink device. The active buffer modifies data received from the auxiliary communication channel. For example, the active buffer amplifies the received data or electrically reshapes the received data. The modified data is then transmitted from the active buffer to a destination device. In one embodiment, the auxiliary communication channel is bi-directional and upon receiving data from a first device, the active buffer is modified to permit uni-directional transmission of data from the first device to a second device. | 2011-06-23 |
20110150056 | METHOD AND APPARATUS FOR COAXIAL CABLE BASED BROADCAST AND COMMUNICATION CONVERGENCE IN HOME NETWORK - Disclosed are a method and an apparatus for a coaxial cable based broadcast and communication convergence in a home network for supporting a frequency band less than a frequency band used in Multimedia over Coax Alliance (MoCA). The apparatus for broadcast and communication convergence includes a broadcast processor that transmits and receives broadcast signals from an external broadcasting network; a communication processor that transmits and receives communication signals from an external communication network; and a broadcast and communication converging unit that is operated as a terminal for the broadcast signals input to the broadcast processor and the communication signals input to the communication processor, and divides an occupied frequency band of the broadcast signals from a remaining frequency band, and uses the remaining frequency band as a channel for the communication signals. | 2011-06-23 |
20110150057 | Monitoring Non-Managed Wire Pairs to Improve Dynamic Spectrum Management Performance - A digital subscriber line (DSL) network provides enhanced dynamic spectrum management (DSM) based on estimated foreign interference obtained from monitoring unmanaged wire pairs in a cable. A DSL access multiplexer (DSLAM) or other line terminal provides vectored DSL signaling to a plurality of subscribers via a first set of wire pairs of the cable. The DSLAM monitors a second set of one or more wire pairs of the cable that are not connected to the vectored group associated with the first set of wire pairs to estimate foreign interference introduced to the first set of wire pairs. The DSLAM then modifies the vectored DSL transmitted signaling responsive to the estimated foreign interference so as to pre-cancel or otherwise compensate for the foreign interference introduced into the managed wire pairs. | 2011-06-23 |
20110150058 | CABLE MODEM CONTROL METHOD BASED ON CHANNEL STATES - Provided is a cable modem control method. The cable modem control method checks upstream parameters which are received by a cable modem termination system to check a status of an upstream channel. The cable modem control method determines whether the upstream channel is good or whether to allow an upstream data transmission of a cable modem on the basis of a result of the check. The cable modem control method suspends the upstream data transmission of the cable modem and performs ranging when the upstream channel is not good as a result of the determination. The cable modem control method postpones bandwidth allocation to a channel of the cable modem and allocates a bandwidth to another usable upstream channel. The cable modem control method returns to a normal status when the ranging is successfully ended. | 2011-06-23 |
20110150059 | Decision Boundary Estimation for MIMO Wireless Receivers - In a wireless receiver, an estimated decision boundary for use in detecting symbol values from one group of combined received symbols is calculated based on a estimated traffic-to-pilot channel scaling ratio or an estimated decision boundary corresponding to another group of combined received symbols. By properly combining the information derived from the latter group of combined received symbols with channel estimation information for the former group, a decision boundary estimate for the former group can be obtained without the use of amplitude or power information for the latter group of symbols. | 2011-06-23 |
20110150060 | Voltage Margin Monitoring for an ADC-Based Serializer/Deserializer in Mission Mode - Various embodiments herein include one or more of systems, methods, software, and/or data structures to determine voltage margin for a high-speed serial data link. Advantageously, the margin determination may be made during normal operation of the data link (“mission mode”) such that the performance of the data link is not affected by the voltage margin measurements. That is, the margin measurements may be performed “on line” rather than “off line.” To facilitate the voltage margin measurement, a plurality of digital samples from an analog to digital converter (ADC) may be evaluated to determine the most probable bit values (i.e., digital 1's and 0's) that are represented by the digital samples. Then, a method may be used to remove or compensate for ISI effects from one or more of the digital samples, thereby providing an accurate representation of the voltage margin present in a data link. Subsequently, the voltage margin may be periodically monitored over time to detect degradation of the data link. | 2011-06-23 |
20110150061 | Communication Via A Multimode Constellation - An apparatus includes a digital data transmitter capable of sequentially exciting different sets of one or more propagation modes in a physical communication channel. Each set of one or more propagation modes has a different spatial distribution of transmitted energy in the channel. The digital data transmitter is configured to sequentially change the excited set of one or more propagation modes to transmit a different value of data to the communication channel. | 2011-06-23 |
20110150062 | SPECTRUM ANALYZER AND SPECTRUM ANALYSIS METHOD - There is provided a spectrum analyzer and a spectrum analysis method capable of promptly performing measurement while preventing the spectrum waveform caused by the fractional spurious components from being displayed. | 2011-06-23 |
20110150063 | COMMUNICATION DEVICE - A communication device includes: a first signal generator generating an outgoing signal with a first frequency; a transmission terminal outputting the outgoing signal generated by the first signal generator; a receiving terminal receiving an incoming signal; a mixer mixing the incoming signal received by the receiving terminal with the outgoing signal generated by the first signal generator; a second signal generator generating a test signal with a second frequency different from the first frequency; and a coupling circuit coupling a line through which the test signal generated by the second signal generator is transferred with a line connecting to the receiving terminal to input the test signal into the mixer. | 2011-06-23 |
20110150064 | DEVICE AND METHOD OF ESTIMATING SYMBOL USING SECOND ORDER DIFFERENTIAL PHASE VECTOR - Provided is a method of estimating a symbol. The method may include deriving phase components of input data, applying a second order differentiation to the phase components to obtain a second order differential phase vector, and estimating symbols corresponding to the input data using the second order differential phase vector. | 2011-06-23 |
20110150065 | MULTIPLE-CHANNEL TRANSMISSION OVER A SINGLE-WIRE BUS - A method for transmitting at least a synchronization and a data signal on a single-wire bus between a master device and at least one slave device, wherein a first transmission channel from the master device to the slave device modulates the periodic pulse width between a first level and second level of a same sign voltage relative to a reference potential, and a second transmission channel amplitude modulates at least one of the voltage levels between the level and at least one third level different from the two others and from the reference potential. | 2011-06-23 |
20110150066 | MULTI-ANTENNA WIRELESS COMMUNICATION METHOD, MULTI-ANTENNA WIRELESS COMMUNICATION SYSTEM, AND MULTI-ANTENNA WIRELESS COMMUNICATION DEVICE - Wireless communication devices A and B perform wireless communication with the MIMO technology. The wireless communication devices A and B determine the optimal diversity combining information that optimizes a diversity reception state through a two-way training signal transfer. This determination can be made based on reception level information, baseband reception IQ information, correlation information between a diversity-combining received signal and a predetermined information sequence, or the like, which are obtained when the diversity combining information with respect to each antenna is sequentially changed. The optimal diversity combining information can be determined by receiving training frames or symbols (the number of antennas+1) times. | 2011-06-23 |
20110150067 | Echo canceller for eliminating echo without being affected by noise - In an echo canceller, a specific frequency component eliminator eliminates a specific frequency component of a specific frequency from a receiver signal to output a resultant signal to an echo path. A specific frequency component detector detects a frequency component of the same frequency as the specific frequency eliminated by the specific frequency component eliminator from the transmitter signal. A noise calculator finds noise power on the basis of power of the specific frequency component detected by the specific frequency component detector, and finds total power including noise and an echo component on the basis of power of a frequency component including the echo component. A control parameter calculator uses the noise power and the total power found by the noise calculator to find a control parameter of the echo canceller. | 2011-06-23 |
20110150068 | Filter for Identifying Signal Artifacts in Bandwidth-limited Instruments - An apparatus and method for determining if ringing in an output signal from a receiver that processes an input signal is the result of a bandwidth limitation in the receiver that processes an input signal rather than ringing in the input signal is disclosed. The apparatus includes the receiver and a ring suppression filter. The ring suppression filter receives the receiver output signal and generates a ring suppressed output signal therefrom. The receiver and the ring suppression filter provide a first aggregate system response such that the ring suppressed output signal does not include ringing introduced by the receiver. The first aggregate system response is linear in phase. | 2011-06-23 |
20110150069 | RF RECEIVER - An RF receiver comprising: an amplifier configured to receive an RF signal over an input bandwidth and to provide an amplified RF signal; an equalizer circuit connected to the amplifier to receive the amplified RF signal and configured to provide an equalized RF signal; a converter module connected to the equalizer circuit and comprising an analog to digital converter configured to convert the equalized RF signal to a digital signal; and a digital signal processing module connected to the receiver module and configured to process the digital signal to provide a plurality of channels at an output of the receiver, wherein the digital signal processing module is further configured to process the digital signal to determine a measure of tilt in the RF signal across the input bandwidth and is connected to the equalizer circuit to provide a control signal for adjusting the measured tilt. | 2011-06-23 |