25th week of 2010 patent applcation highlights part 40 |
Patent application number | Title | Published |
20100157994 | Network element for switching time division multiplex signals - In order to provide a network element for switching time-division multiplex signals in a transport network, which allows higher capacity at moderate equipment costs, the network element has a number of input ports (I; IO1-IO8), a number of output ports (O; IO1-IO8) and a switch fabric ( ) SF; | 2010-06-24 |
20100157995 | Method for Setting Up a Telephone Connection, and Apparatuses - A first telephone connection from a first terminal to a second terminal is set up via a circuit-switched telephone network to send signaling from the second terminal to the first terminal via the first telephone connection, where the signaling signals the capability of the first terminal or of the second terminal to handle telephone data which are received via a data packet transmission network, or where the signaling contains connection data which relate to the availability of the signaling terminals in the data packet transmission network. | 2010-06-24 |
20100157996 | Multi-Service Network System - A multi-service network system which forms a wide area network connecting a plurality of metropolitan areas, including a primary network ring including at least one primary node and at least one secondary node; and a secondary network ring connecting the at least one secondary node to business premises equipment, wherein the business premises equipment are associated with respective customer premises equipment. | 2010-06-24 |
20100157997 | Method and System for Optimizing Routing of Data Packets - A method and system for determining a route for a packet traveling over at least one system from a source to a destination is disclosed. A first geographic area corresponds to the source and a second geographic area corresponds to the destination. The destination further has an address which does not indicate the second geographic area. In this aspect, the method and system include associating an address for the destination with the second geographic area to allow selection of the route for the data packet based on the second geographic area and selecting the route based on a second geographic area. In a second aspect, the method and system include providing a direct link having a controllable amount of traffic and selecting the direct link as at least a portion of the route when a data packet to the destination is to be routed. The method and system also facilitate selection of a route for a data packet. In this aspect, the method and system include obtaining information relating to an autonomous system. The autonomous system has a geographic area. The information includes the geographic area. In this aspect, the method and system also include associating the autonomous system with the geographic area to allow selection of the route based on the geographic area. | 2010-06-24 |
20100157998 | System and method for implementing application functionality within a network infrastructure - A system and method for implementing functionality within a network on behalf of first and second computers communicating with each other through the network. A front-end computer is provided within the network having an interface for communicating data traffic with the first computer. A back-end computer is also implemented within the network having an interface for communicating data traffic with the second computer. A communication channel couples the front-end computer and the back-end computer. Data traffic is encoded over the communication channel in a first process in the front-end computer. Data traffic is also encoded over the communication channel in a second process in the back-end computer, wherein the first process and the second process implement compatible semantics. | 2010-06-24 |
20100157999 | NETWORK CAPABLE OF M3UA-BASED NETWORKING, APPARATUS AND MESSAGE TRANSFER METHOD - A network capable of M3UA-based networking, an apparatus, and a message transfer method are disclosed herein. The network includes: an IPSTP, configured to: perform signaling interworking with an IPSEP and/or other IPSTPs in the network, and maintain routes dynamically; and an IPSEP, configured to perform signaling interworking with the IPSTP. The network, the apparatus and the method under the present invention accomplish the M3UA-based networking throughout the network, especially, sophisticated M3UA-based networking | 2010-06-24 |
20100158000 | TRANSMITTING APPARATUS AND TRANSMITTING METHOD - To transmit multimedia data in such a manner that is adaptive to the transmission, capability of a receiving apparatus and/or to the congestion state of a network. In a transmitting apparatus ( | 2010-06-24 |
20100158001 | REDUNDANT COMPUTERS AND COMPUTER COMMUNICATION NETWORKS IN A HIGH-VOLTAGE POWER TRANSMISSION SYSTEM - A method for sending signals from an active computer in a high-voltage power transmission system including active protection computers and active and standby control computers in a hierarchical structure having at least two hierarchical levels. A high-voltage power transmission system and a control station for at least a part of such a transmission system. In the system all computers on the various hierarchical levels are connected to at least two separate computer communication networks. An active computer sends signals that are to be received by at least one other computer at the same or another hierarchical level simultaneously on the two separate computer communication networks to which it is connected. | 2010-06-24 |
20100158002 | COMMUNICATION SYSTEM, NODE, TERMINAL, PROGRAM AND COMMUNICATION METHOD - In a communication system formed of two or more networks in which a part or all of nodes belonging to each said network form a plurality of combinations of nodes so as not to overlap with other node on the network to which each node belongs, the nodes belonging to the same combination are connected with each other and terminals are connected under the control of a part or all of the nodes belonging to the same combination, a node belonging to the combination transmits a frame received from a terminal under the control of the node itself to any of adjacent nodes on the network to which the node itself belongs and a node belonging to the same combination to which the node itself belongs and connected to the node itself. This obtains a highly reliable communication system whose desired transmission capacity can be realized at low costs and which can be restored from an abnormal state in a short time period. | 2010-06-24 |
20100158003 | SHARING OF NETWORK SECURITY AND SERVICES PROCESSING RESOURCES - Systems and methods are disclosed of routing traffic in a network that include classifying incoming data packets using the content of the incoming data packets that remains relatively consistent during a network session. These systems and methods also include ordering the incoming traffic according to at least one internet protocol address comprised within the incoming traffic, hashing the at least one internet protocol address and the destination port within the incoming traffic, and determining a destination service module for the incoming traffic. Through these systems and methods, data can be routed without the need for complete flow tables. | 2010-06-24 |
20100158004 | OFFLOADING CONTENT ROUTING COST FROM ROUTERS - Embodiments of the present invention are directed to reconfiguring communication routing architecture. A determination may be made that loading on one or more routing entities require adjustment. Adjustment may be required in situations where, for example, the amount of data to convey or the number of clients to service overcome the abilities of the router. In reconfiguring the communication routing architecture, some of the routing responsibility for the heavily loaded routers may be offloaded to neighboring routers and/or clients. | 2010-06-24 |
20100158005 | System-On-a-Chip and Multi-Chip Systems Supporting Advanced Telecommunication Functions - A system-on-chip integrated circuit (and multi-chip systems based thereon) that includes a bridge interface that provides transparent bridging of data communicated between integrated circuits. | 2010-06-24 |
20100158006 | DIFFERENTIATED PRIORITY LEVEL COMMUNICATION - Provided are methods, apparatuses and systems for providing prioritized data distribution at a customer premise. A network access component may receive priority information from a trusted source, the priority information being indicative of an association between at least one identifier and a respective priority level. The network component may determine a particular identifier associated with data received from a communication entity. The network access component may determine a particular priority level associated with the data based on the particular identifier and the priority information. The network component may also prioritize at least a portion of the data on a basis of the particular priority level. | 2010-06-24 |
20100158007 | METHOD AND APPARATUS FOR AGGREGATING SINGLE PACKETS IN A SINGLE SESSION - A method and apparatus for aggregating single packets in a single session are disclosed. If the amount of single packets in a single session exceeds a threshold value, it is detected that attack traffic is being inputted and the single packets in the single session are aggregated into a single flow, thus preventing degradation of a network performance due to the single packets in the single session. | 2010-06-24 |
20100158008 | SWITCHING EXCHANGE - In a network system where a switching exchange accommodating an ISDN provides TDMoIP packet communication over an IP network, measures for packet loss prevention need to be taken during a period during which a TDM service is packet-transferred over the IP network. When a transmitting-end switching exchange in the above network system multiplexes TDM data, the present invention varies the degree of multiplicity in accordance with the delay in the IP network and the type of data. | 2010-06-24 |
20100158009 | HIERARCHICAL PACKET PROCESS APPARATUS AND METHOD - Provided is a hierarchical packet processing apparatus and method. In one general aspect, a packet is analyzed, divided into an upper layer and a lower layer. It is determined whether a property of the packet to be analyzed has been already analyzed or has to be re-analyzed with respect to each of the upper and lower layers of the packet. Therefore, deep packet inspection is performed only when it is required, and thus assurance of quality of service (QoS) during packet processing can be achieved, as well as reduced waste of resources. | 2010-06-24 |
20100158010 | METHOD FOR FORWARDING PACKET IN MPLS L3VPN - The present invention relates to a method for forwarding a packet which is to provide a VPN service using an IPv4 address in an MPLS network. The method for forwarding the packet according to the present invention extracts routing information including a VRF identifier from a packet, when the packet is received at one or more CE routers in the MPLS network, searches for next hop information in a forwarding table by using the VRF identifier and a prefix, substitutes the searched next hop information by destination information of the received packet, and transmits the packet to an output port. According to the present invention, since the plurality of forwarding tables for providing the VPN are provided without extending a memory, the packet forwarding can be stably performed. | 2010-06-24 |
20100158011 | REPEATER AND REPEATING METHOD - A repeater stores retrieval situation of an address retrieved as an address identical with the transmission destination address of the reception frame in association with each address registered in the learning table, refers to, when the transmission source address of the received frame is registered in the learning table, the retrieval situation of the address stored in association with a port identical with the port that receives the frame from among retrieval situations, specifies an address to be overwritten by the transmission source address of the reception frame, overwrites and registers the transmission source address of the reception frame on the specified address, and updates, when the address identical with the transmission destination address of the received frame is retrieved from the learning table, the retrieval situation stored in association with the retrieved address. | 2010-06-24 |
20100158012 | PACKET COMMUNICATION METHOD AND APPARATUS AND A RECORDING MEDIUM STORING A PACKET COMMUNICATION PROGRAM - A packet communication method and a packet communication system capable of making an IPv4-compatible application operating on an information processing apparatus communicate with another information processing apparatus connected to an IPv6 network without using an address translation router. In the information processing apparatus connected to the IPv6 network, an IPv4-to-IPv6 protocol conversion control function is incorporated in a LAN driver. A protocol conversion control module receives an IPv4 packet from a protocol control module. When a send destination IPv4 address contained in a header of the packet is registered in an address translation table incorporated in the protocol conversion control module, an IPv6 address is generated to be sent onto a LAN. Unless the send destination IPv4 address contained in the packet header is registered in the address translation table incorporated in the protocol conversion control module, the IPv4 packet as received is intactly sent onto the LAN. | 2010-06-24 |
20100158013 | SYSTEMS AND METHODS FOR REDUCING LATENCY AND RESERVATION REQUEST OVERHEAD IN A COMMUNICATIONS NETWORK - Systems and methods for reducing reservation request overhead in a communications network in which devices are connected via a coax network are provided. A method for managing transmission of data over a MoCA network according to the invention may include monitoring data transmission requirements at a node on the network; generating statistics of the data transmission requirements; predicting transmission requirements from the statistics; and reserving future transmission opportunities in view of the predicted transmission requirements. | 2010-06-24 |
20100158014 | NETWORK APPARATUS AND METHOD FOR FORWARDING PACKET - When a network apparatus of this invention receives an IEEE 802.3ad link application control packet from a subscriber line with a VPWS function, it processes the packet in a control unit without relaying the packet by VPWS. More specifically, the network apparatus receives an IEEE802.3ad link aggregation control packet along with receiving an IEEE802.3x flow control packet. The network apparatus transmits a link aggregation control packet. The network apparatus also relays other layer 2 control protocol packets without receiving them, and does not transmit the other layer 2 control protocol packets. | 2010-06-24 |
20100158015 | PACKET AGGREGATION AND FRAGMENTATION AT LAYER-2 OVER A MANAGED NETWORK - A method and apparatus for receiving packets from a node within a first network in accordance with a first protocol. A descriptor associated with each received packet is read by a direct memory access (DMA) controller that stores the received packet. A value for a controllable parameter is selected to efficiently communicate the content of the received packet over a second network that operates in accordance with a second protocol. The information in the received packet is then organized into newly formed packets, the size of which makes them efficient for communication over the network in the second protocol. The newly formed packets are stored in a transmit line buffer and associated with a Protocol Descriptor. The Protocol Descriptor provides information to a transmit controller to allow the transmit controller to select and aggregate packets from the transmit line buffer in order to make efficient use of the second protocol. | 2010-06-24 |
20100158016 | SYSTEM AND METHOD OF FAST ADAPTIVE TCAM SORTING FOR IP LONGEST PREFIX MATCHING - A system and method are provided for sorting IP routing table entries in a TCAM for longest IP prefix matching LPM of destination IP addresses. The IP routing table is divided into logical blocks, for each block an associated routing entry IP prefix length. Each block is of a respective size whose proportion of the total size of the routing table is determined by the associated IP prefix length. The blocks are ordered so that the TCAM returns an LPM when queried. Starting block sizes can be initialized to proportions which reflect actual expected numbers by proportion of routing entries by IP prefix length. The blocks also grow and shrink as entries are added and deleted so as to more closely mirror real-world populations of expected entries having the IP prefix length in question. | 2010-06-24 |
20100158017 | METHOD FOR OPERATING MULTI-DOMAIN PROVIDER ETHERNET NETWORKS - A method of enabling extension of a network service of a first domain to a remote customer site hosted by an Access Gateway (AG) in a Provider Ethernet domain. In the first domain, the remote customer site is represented as being hosted by a border gateway (BG) connected to the Provider Ethernet domain, such that subscriber packets associated with the network service are forwarded to or from the remote customer site via the BG. In the Provider Ethernet domain, a trunk connection is instantiated through the Provider Ethernet domain between the host AG and the BG. A trunk cross-connection function is installed in the host AG, for transferring subscriber packets associated with the network service between a respective attachment virtual circuit (AVC) through which the remote customer site is connected to the host AG and an extended AVC tunnelled through the trunk connection. A common service instance identifier (I-SID) is used to identify both the AVC between the host AG and the remote customer site and the extended AVC between the host AG and the BG. | 2010-06-24 |
20100158018 | METHOD FOR FORWARDING PATH VIRTUALIZATION FOR ROUTER - Provided is a method for forwarding path virtualization for a router, which prevents the processing speed of the router from decreasing due to a plurality of operating systems installed in an upper layer of a hypervisor when the router is virtualized. | 2010-06-24 |
20100158019 | FRAME TRANSFER APPARATUS AND FRAME TRANSFER METHOD - A frame transfer apparatus includes a plurality of ports for transmitting and receiving frames which include transmitting source information and transmitting destination information. The apparatus further includes a processing unit to store information which relates the transmitting source information included in the received frame and port information of a port which receives the received frame, a frame transmitting unit to transmit the received frame via a port that is identified by the port information which corresponds to the transmitting destination information included in the received frame and is extracted from the information stored by the processing unit, and a learning information erasing unit to erase the information stored by the processing unit for every predetermined time. | 2010-06-24 |
20100158020 | Virtual Private Network Based upon Multi-Protocol Label Switching Adapted to Measure the Traffic flowing between single rate zones - Virtual Private Network (VPN) dedicated to a customer using a physical transmission network based upon Multi-Protocol Label Switching (MPLS) technology including a plurality of Provider (P) devices and a plurality of Provider Edge (PE) devices, the customer owning at least two specific Customer Edge (CE) devices amongst a plurality of CE devices, a specific CE device being attached to a specific PE device and enabling the customer to gain access to any other CE device belonging to the same VPN, by the intermediary of PE devices to which are attached the CE devices. The VPN comprises several billing zones ( | 2010-06-24 |
20100158021 | SYSTEMS AND METHODS FOR PHYSICAL LAYER ("PHY") CONCATENATION IN A MOCA NETWORK - Systems and methods for concatenating messages in MoCA devices that are connected via a coax network are provided. One embodiment of a system according to the invention includes a home network having a plurality of nodes. The network is implemented over coaxial cable. The network includes a plurality of networked nodes. A transmitter of at least one of the networked nodes is configurable to transmit a concatenated burst. The concatenated burst includes a preamble, a first payload frame and a second payload frame. The first payload frame and the second payload frame are separated by a cyclic prefix of a first symbol of the second payload frame. | 2010-06-24 |
20100158022 | SYSTEMS AND METHODS FOR PROVIDING A MoCA IMPROVED PERFORMANCE FOR SHORT BURST PACKETS - Systems and methods for reducing the latency and for increasing throughput for MoCA devices that are connected via a coax network are provided. One method according to the invention includes, in a network having a plurality of network modules, each of the plurality of network modules being connected to a coax backbone, communicating over the coax backbone between the plurality of network modules. The method further includes a requesting the use of short burst messages. The method further includes responding to the requesting by constructing a short burst message with a single channel equalization section and reducing the number of bits per hertz in the transmission constellation. The resulting messages can be received with an acceptable error rate while making more efficient use of the MoCA network. | 2010-06-24 |
20100158023 | System-On-a-Chip and Multi-Chip Systems Supporting Advanced Telecommunication Functions - A system-on-chip integrated circuit (and multi-chip systems based thereon) that includes a bridge interface that employs data scrambling and error correction on data communicated between integrated circuits. | 2010-06-24 |
20100158024 | OPTIMIZED FORWARDING FOR PROVIDER BACKBONE BRIDGES WITH BOTH I&B COMPONENTS (IB-PBB) - In one embodiment, when a frame is directed to one or more customer instance ports (CIPs) of a switch having received the frame, the frame (a “local frame”) may be forwarded on the one or more CIPs based on only a customer space (C-space) lookup operation. Also, if the frame is not directed to any CIPs of the switch, the frame (a “transient frame”) may be forwarded on at least one or more provider backbone ports (PBPs) of the switch based on only a backbone space (B-space) lookup operation. For example, a unicast frame may be forwarded based on whether the frame terminates at the switch having received the frame (to a CIP of the switch), while a multicast frame may be forwarded based on determining whether an instance service identifier (I-SID) of the frame maps to a local VLAN ID (L-VID) at the switch (to any CIPs servicing that L-VID). | 2010-06-24 |
20100158025 | BRIDGE APPARATUS AND VIRTUAL NETWORK SWITCHING METHOD - A bridge apparatus creates, transmits and circulates pass checking frames having virtual network identifiers in a ring network, and collects a passing/non-passing state of each virtual network identifier. The bridge apparatus creates, transmits and circulates a usage state checking frame in the ring network, and collects a used/unused state of the virtual network identifier of each bridge apparatus. The bridge apparatus creates, transmits and circulates a connection changing frame to change the virtual network identifier having the used state and the non-passing state into the virtual network identifier having the unused state and the passing state. Each bridge apparatus changes the virtual network identifier having the used state and the non-passing state into the virtual network identifier having the unused state and the passing state. | 2010-06-24 |
20100158026 | Transparent Interaction with multi-layer protocols via Selective Bridging and Proxying - The current invention defines a device and a method of logically inserting the device between two other network devices, for example, in a 3GPP Radio Access Network. The device transparently monitors and interacts with one or more control protocol layers in the two neighboring devices. The invention defines methods by which the intercepting node selectively passes through or proxies (selectively modifying portions of the protocols content) in such as way that the neighbor nodes are un-aware of the intercepting device. The proxy operation implies that the intercepting node is capable of terminating some protocol elements, injecting some protocol elements, or modifying protocol elements before forwarding them in such a way that the operation is transparent to neighboring nodes. These selective insertion/modifications facilitate identifying signaling connections for specific mobile clients, and enhancing and modifying service features for dataplane accesses for those client devices, while transparently passing other protocol messages. | 2010-06-24 |
20100158027 | Methods and apparatus for data communications through packet networks - An improved data communication technique may be employed with modems through a packet network. The disclosed technique facilitates a virtual end-to-end connection between two modems such that the two modems can effectively behave as if directly connected to each other, unaware of any modifications to the data being transferred or to the protocols configured within the communication connection. Preferably, a data communication system for carrying out the communication technique demodulates data coming from a first modem, transports the demodulated data in packets between two gateways, and then remodulates the data before delivering to a second modem at the other end. In accordance with various aspects of the present invention, various alternatives for calling and quality of service set-up mechanisms, the establishment of a communication session, the transport of data during a communication session, the flow control between all system components involved, and the mechanisms for the termination of communications are also provided. | 2010-06-24 |
20100158028 | NETWORK SWITCH WITH MUTUALLY COUPLED LOOK-UP ENGINE AND NETWORK PROCESSOR - A network switch includes a look-up engine for obtaining associated data in response to a header portion of a packet and an interlinked network processor such as a RISC for performing a processing function on the header portion or the associated data. Both look-up engine and the network processor may modify a destination port bitmask. The network processor may implement additional packet header processing required for replication or server load balancing. | 2010-06-24 |
20100158029 | METHOD OF OPERATING INTERNET PROTOCOL ADDRESS AND SUBNET SYSTEM USING THE SAME - A method of operating an Internet protocol (IP) address allocates, creates, and processes an interface identifier (ID) of an IP address area. In the allocation, the IP address area includes a subnet prefix area and an Interface ID area, and certain bits of the Interface ID area are used as an index area of a subnet gateway. The allocation is implemented in order from the higher layer to the lower layer so that the Interface ID area is sequentially allocated from the higher bits for the index areas of the respective layers. The combination of the certain bits of the allocated Interface ID and the subnet prefix area of the IP address area is used as the subnet ID of the subnet layers. The lowest subnet gateway allocates the Interface ID to terminating equipment to access the IP network based on a format of the IP address. | 2010-06-24 |
20100158030 | Routing Apparatus - A routing apparatus couples to another routing apparatus using a trunk formed by a plurality of channels, and has a plurality of input and output cards to input and output frames. Each input and output card includes a management table registering a transmitting source address, destination information, and a trunk attribute indicating whether a channel used for a transmission has a trunk structure, a learning request part searching the management table using a transmitting source address within a frame that is transmitted via the channel, and generating and supplying learning request information having information that is obtained by searching the management table to another input and output card, if the channel used for the transmission has the trunk structure, and a registering part registering learning request information supplied thereto in the management table. | 2010-06-24 |
20100158031 | METHODS AND APPARATUS FOR TRANSMISSION OF GROUPS OF CELLS VIA A SWITCH FABRIC - In one embodiment, a method can include receiving at an egress schedule module a request to schedule transmission of a group of cells from an ingress queue through a switch fabric of a multi-stage switch. The ingress queue can be associated with an ingress stage of the multi-stage switch. The egress schedule module can be associated with an egress stage of the multi-stage switch. The method can also include determining, in response to the request, that an egress port at the egress stage of the multi-stage switch is available to transmit the group of cells from the multi-stage switch. | 2010-06-24 |
20100158032 | SCHEDULING AND QUEUE MANAGEMENT WITH ADAPTIVE QUEUE LATENCY - The invention relates to a scheduler for a TCP/IP based data communication system and a method for the scheduler. The communication system comprises a TCP/IP transmitter and a receiving unit (UE). The scheduler is associated with a Node comprising a rate measuring device for measuring a TCP/IP data rate from the TCP/IP transmitter and a queue buffer device for buffering data segments from the TCP/IP transmitter. The scheduler is arranged to receive information from the rate measuring device regarding the TCP/IP data rate and is arranged to adapt the permitted queue latency to a minimum value when the TCP/IP transmitter is in a slow start mode and to increase the permitted queue latency when the TCP/IP rate has reached a threshold value. | 2010-06-24 |
20100158033 | COMMUNICATION APPARATUS IN LABEL SWITCHING NETWORK - In a label switching network using a plurality of labels including first and second labels, a communication apparatus receives a packet having the plurality of labels, and determines an output destination of the packet in accordance with the first label of the plurality of labels. Additionally, the communication apparatus sorts the packet to one of a plurality of packet queues in accordance with a combination of the first and the second labels of the plurality of labels, and reads and multiplexes packets from the plurality of packet queues. | 2010-06-24 |
20100158034 | END-POINT AWARE RESOURCE RESERVATION PROTOCOL PROXY - A method performed by a first network device may include receiving a request for a resource from an end-point device and acknowledging the request for the resource to the end-point device. The method may also include receiving a resource coordination message from a second network device and transmitting a return resource coordination message to the second network device. | 2010-06-24 |
20100158035 | RESOURCE MANAGEMENT AND RECURSIVE PATH COMPUTATION FOR REAL-TIME AUTOMATIC PATH SETUP AT MULTI-LAYER TRANSPORT NETWORK - A recursive path computation method is disclosed to integratedly manage resources required for a computation of a data transmission path in a multi-layer transport network to enable automatic real time allocation of lower layer resources required for processing a path request when resources required for a path computation of each layer are not sufficient or when resources have not been previously allocated. A network path request service over multiple layers can be quickly performed, and utilization efficiency of network resources can be maximized. | 2010-06-24 |
20100158036 | METHOD AND APPARATUS OF RECEIVING BURST DATA USING MULTIPLE UPSTREAM CHANNELS BASED ON UPSTREAM BANDWIDTH ALLOCATION INFORMATION IN HFC NETWORK - Provided is a method and apparatus for effectively receiving channel bonded upstream burst data in a Hybrid Fiber Cable (HFC) network. | 2010-06-24 |
20100158037 | DETERMINISTIC COMMUNICATION SYSTEM - The invention relates to a communication system and a method for controlling a communication system for communicating audio data between each of a plurality of terminal units (T | 2010-06-24 |
20100158038 | COMMUNICATION METHOD, COMMUNICATION APPARATUS, AND COMMUNICATION SYSTEM - A communication apparatus communicates with another communication apparatus connected to a transmission channel and sharing a communication band. The communication apparatus includes: a receiving unit that receives, through the transmission channel, data including time information based on a transmission time when a synchronous signal is transmitted to the transmission channel from a synchronous signal transmitting apparatus at a given cycle, the synchronous signal for synchronizing a plurality of communication apparatuses; a transmitting unit that transmits data to the transmission channel; and a transmission control unit that estimates a synchronous signal non-existing period in which there is no synchronous signal on the transmission channel on the basis of the time information received by the receiving unit and the given cycle, and controls the transmitting unit to transmit data within the estimated synchronous signal non-existing period. | 2010-06-24 |
20100158039 | COMMUNICATION METHOD AND COMMUNICATION DEVICE - A communication method for performing a communication among a plurality of communication devices sharing a communication band, includes a first step of transmitting notification signal during a first period to notify information for arbitrating the communication device capable of performing data transmission during a second period subsequent to the first period, and a second step of transmitting data from the communication device, capable of performing the data transmission during the second period based on the notification signal transmitted during the first period, in specific period in the second period allocated to the data transmitted from the communication device. | 2010-06-24 |
20100158040 | JOINING PROCEDURE - There is provided a method of operating a device to join a network, the network having a plurality of superframes, each superframe being divided into slots, the method comprising transmitting a beacon frame in a first slot of a first superframe; wherein, if a collision occurs in the first slot, selecting a second slot from a group comprising the first slot and a plurality of slots occurring after the first slot; and transmitting a further beacon frame in the second slot in a subsequent superframe. | 2010-06-24 |
20100158041 | MULTI-SPEED STACK INTERFACE - Various embodiments provide an apparatus and method for configuring a shared data rate in a stackable interface network. An example embodiment includes detecting a data cable identifier, the data cable identifier being indicative of a first data rate capacity associated with a data cable identified by the data cable identifier; propagating information indicative of the first data rate capacity to at least one of a plurality of network devices connected via stackable network interfaces; receiving information indicative of a second data rate capacity from at least one of the plurality of network devices; determining an appropriate shared data rate from the information indicative of the first data rate capacity and the information indicative of the second data rate capacity; and configuring at least one of the plurality of network devices to communicate via a stackable network interface at the shared data rate. | 2010-06-24 |
20100158042 | PACKET PROCESSING APPARATUS AND METHOD CAPABLE OF GENERATING MODIFIED PACKETS BY MODIFYING PAYLOADS OF SPECIFIC PACKETS IDENTIFIED FROM RECEIVED PACKETS - A packet processing apparatus includes a packet identifying unit and a packet modifying unit. The packet identifying unit is utilized for receiving a plurality of packets and checking identification information and data length information which are derived from the received packets to identify first packets from the received packets. The packet modifying unit is coupled to the packet identifying unit, and is utilized for checking payloads of the first packets to identify second packets from the first packets, where each of the second packets has specific data included in a payload thereof, and for modifying at least the payload of each of the second packets. | 2010-06-24 |
20100158043 | Method and apparatus for reformatting and retiming digital telecommunications data for reliable retransmission via USB - A method for retiming digital telecommunications data received by a digital logger from a plurality of T-carrier type telephone lines respectively having differing clock sources ensures efficient transmission of received digital audio data to a host computer via a Universal Serial Bus (“USB”) interface. Also the digital logger includes volatile memory for temporarily storing digital audio data received from the plurality of T-carrier type telephone lines for:
| 2010-06-24 |
20100158044 | METHOD AND APPARATUS FOR BUNDLING AND CIPHERING DATA - Techniques for bundling and ciphering data prior to transmission are described. In an exemplary design, a transmitting entity receives a plurality of service data units (SDUs) from an upper layer, assigns sequential sequence numbers to the SDUs, and bundles the SDUs into a single protocol data unit (PDU). In one design, the transmitting entity generates a single count value based on a sequence number of a designated SDU (e.g., the first SDU) in the PDU and ciphers all SDUs based on the single count value. In another design, the transmitting entity ciphers each segment of at least two SDUs in the PDU based on a count value for that segment. The transmitting entity generates a header with at least one sequence number and possibly length and/or other information for the SDUs. The transmitting entity forms the PDU with the header and the SDUs and passes the PDU to a lower layer. | 2010-06-24 |
20100158045 | METHOD FOR TRANSMITTING/RECEIVING DATA FRAME IN CAN PROTOCOL - Provided is a method for transmitting/receiving data in a CAN protocol. First, it is determined whether the size of CAN message data to be transmitted exceeds the size of the data field. If the size of the CAN message data exceeds the size of the data field, the CAN message data are fragmented to generate data fragments smaller in size than the data field, A CAN data frame including a control field and a data field is generated with respect to each of the data fragments, and the generated CAN data frame is transmitted. | 2010-06-24 |
20100158046 | METHOD AND APPARATUS FOR GENERATING DATA PACKETS FOR TRANSMISSION IN AN OFDM COMMUNICATION SYSTEM - Method and apparatus for generating data packets for transmission in an orthogonal frequency division modulated communication system, in which preamble sequence for each packet is generated in the frequency domain or the time domain depending on at least two conditions to save power consumption and enable implementation in a single CMOS chip. | 2010-06-24 |
20100158047 | URGENT PACKET TRANSMISSION/RECEPTION APPARATUS AND METHOD FOR DIGITAL BROADCAST SYSTEM - An apparatus and method for transmitting/receiving an urgent packet in a digital broadcast system is provided. A packet transmission apparatus of a digital broadcast transmitter includes a buffer which buffers broadcast packets; an urgent packet generator which generates an urgent packet having an urgent packet header indicating the urgent packet when a packet containing urgent data is detected; and a frame generator which generates a frame with the broadcast packets and inserts the urgent packet into the frame, wherein the urgent packet is substituted for one of broadcast packets in the frame. | 2010-06-24 |
20100158048 | Reassembling Streaming Data Across Multiple Packetized Communication Channels - Mechanisms are provided for processing streaming data at high sustained data rates. These mechanisms receive a plurality of data elements over a plurality of non-sequential communication channels and write the plurality of data elements directly to the file system of the data processing system in an unassembled manner. The mechanisms further perform a data scrubbing operation to determine if there are any missing data elements that are not present in the plurality of data elements written to the file system and assemble the plurality of data elements into a plurality of data streams associated with the plurality of non-sequential communication channels in response to results of the data scrubbing indicating that there are no missing data elements. In addition, the mechanisms release the assembled plurality of data streams for access via the file system. | 2010-06-24 |
20100158049 | SYSTEM FOR STACKING SIGNALS IN AN EXPANDED FREQUENCY RANGE - A device for stacking signals in an expanded frequency range includes an upconverter and a multiplexer. The upconverter is configured to receive upstream signals that are in a first frequency range, upconvert some of the upstream signals that are in a first frequency sub-range of the first frequency range and pass some of the upstream signals that are in a second frequency sub-range of the first frequency range. The multiplexer is configured to stack the upconverted upstream signals and the upstream signals in the second frequency sub-range and output the stacked upstream signals. | 2010-06-24 |
20100158050 | TECHNIQUES FOR GENERATING AND DETECTING A PHYSICAL RANDOM ACCESS CHANNEL SIGNAL IN A WIRELESS COMMUNICATION SYSTEM - A technique for detecting a physical random access channel (PRACH) signal includes demasking a received signal with a demasking signal. In this case, the demasking removes a PRACH root index component from the received signal. A fast Fourier transform is performed on the demasked received signal to provide a time-domain signal. At least three peaks of the time-domain signal from all antennas are then power combined. Finally, a determination is made as to whether a preamble index for the PRACH signal matches a known preamble index based on an output power of the time-domain signal at the at least three peaks. | 2010-06-24 |
20100158051 | Method, Apparatus and System for Frequency Synchronization Between Devices Communicating over a Packet Network - An endpoint or other communication device of a communication system includes a clock recovery module. The communication device is operative as a slave device relative to another communication device that is operative as a master device. The clock recovery module comprises a clock recovery loop configured to control a slave clock frequency of the slave device so as to synchronize the slave clock frequency with a master clock frequency of the master device. The clock recovery loop utilizes a frequency error estimator implemented as a maximum-likelihood estimator with slope fitting based on a sequence of arrival timestamps, and a loop filter implemented as a series combination of an adaptive-bandwidth filter and a proportional-integral controller. The clock recovery module may further comprise a discontinuity detector configured to detect a discontinuity in delays of respective timing messages, and a loop controller operative to place the clock recovery loop in a particular state responsive to detection of the discontinuity. | 2010-06-24 |
20100158052 | ELECTRONIC DEVICE AND METHOD FOR SYNCHRONIZING A COMMUNICATION - An electronic device is provided which comprises a plurality of processing units (IP | 2010-06-24 |
20100158053 | DERATE MATCHING METHOD AND APPARATUS - Provided are a method and apparatus for derate matching a rate-matched data. The received data is deinterleaved and derate matched at a time, without using input buffers or constructing input buffers in parallel. Thus, a total process time necessary for the deinterleaving process and the derate matching process is reduced, and the use of memories such as the input buffers is minimized. | 2010-06-24 |
20100158054 | LASER SYSTEM WITH PICOSECOND PULSE EMISSION - The invention relates to a device ( | 2010-06-24 |
20100158055 | METHOD AND APPARATUS FOR CONTROLLING AND MONITORING LASER POWER IN BARCODE READERS - A method of monitoring the output power of a laser diode in a barcode reader. The method includes sampling a threshold monitoring-current that is related the driving-current passing through the laser diode during a first time period when this current is at the lasing threshold of the laser diode. The method includes generating a threshold-compensated monitoring-current by subtracting the threshold monitoring-current from the above-threshold monitoring-current. The method includes monitoring the output power of the laser diode in the barcode reader at least partially based on the threshold-compensated monitoring-current. | 2010-06-24 |
20100158056 | SEMICONDUCTOR LASER DEVICE - Provided is a semiconductor laser device including: a gain area where multi-wavelength lights are generated and gain are provided; a first reflection area where among the multi-wavelength lights, a first-wavelength light is reflected to the gain area in response to a first selection signal; a second reflection area where among the multi-wavelength lights, a second-wavelength light is reflected to the gain area; and a phase control area where a phase of the second-wavelength light is shifted in response to a phase control signal, the phase control area being disposed between the first reflection layer and the second reflection layer. | 2010-06-24 |
20100158057 | FEEDBACK CONTROL FOR HEATED TOSA - A closed loop system for controlling laser temperature without the need for additional sensors or other hardware. Embodiments utilize an existing automatic power feedback loop and existing sensors to determine the temperature of a TOSA based on changes in laser bias current, thus avoiding the need for the additional hardware. The automatic power feedback loop will modify the laser bias current as the temperature of the TOSA changes. That is, as the temperature increases, the amount of laser bias current is increased and as the temperature decreases, the amount of laser bias current is decreased. Thus, the laser bias current may be used as feedback for the laser temperature control. Accordingly, when the transceiver module drops below a predetermined temperature, a laser heater current may be controlled to thereby maintain the same laser bias current as at the preset temperature. | 2010-06-24 |
20100158058 | LASER MODULE - A laser module ( | 2010-06-24 |
20100158059 | SEMICONDUCTOR LASER APPARATUS - A semiconductor laser apparatus of the present invention includes: a semiconductor laser chip | 2010-06-24 |
20100158060 | Laser Diode Assemblies - Laser diodes ( | 2010-06-24 |
20100158061 | Color-Controlled Illumination Device - The invention relates to a color-controlled illumination device ( | 2010-06-24 |
20100158062 | Adapted Semiconductor Laser Package - An adapted semiconductor laser package that may convert a first type of package pin-out arrangement to a desired pin-out arrangement. The laser package may include a laser package including a laser, an isolator, a lens, a fiber sleeve, and a pin-out arrangement. The isolator and the fiber sleeve may be jointly arranged away from the laser. The laser package may also include an adapter with a first section with a plurality of holes geometrically arranged and mated with the package pin-out arrangement, a second section with an adapter pin-out arrangement with two rows of pins extending along opposite sides of the package, and electrical connections between the plurality of holes and the pins. | 2010-06-24 |
20100158063 | TUNABLE LASER WITH A DISTRIBUTED BRAGG GRATING COMPRISING A BRAGG SECTION MADE OF STRAINED BULK MATERIAL - The general field of the invention is that of tunable semiconductor devices with distributed Bragg grating, and more particularly that of tunable lasers with distributed Bragg grating termed DBRs. The device according to the invention comprises a passive Bragg section comprising a material whose optical index variations are controlled by an injection current, said material of the Bragg section is a strained bulk material, the strain applied to the bulk material being equal to at least 0.1%. | 2010-06-24 |
20100158064 | SEMICONDUCTOR LIGHT EMITTER - A semiconductor light emitter includes a quantum well active layer which includes nitrogen and at least one other Group-V element, and barrier layers which are provided alongside the quantum well active layer, wherein the quantum well active layer and the barrier layers together constitute an active layer, wherein the barrier layers are formed of a Group-III-V mixed-crystal semiconductor that includes nitrogen and at least one other Group-V element, a nitrogen composition thereof being smaller than that of the quantum well active layer. | 2010-06-24 |
20100158065 | SURFACE-EMISSION LASER DEVICES, SURFACE-EMISSION LASER ARRAY HAVING THE SAME, ELECTROPHOTOGRAPHIC SYSTEM AND OPTICAL COMMUNICATION SYSTEM - A surface-emission laser device comprises an active layer, cavity spacer layers provided at both sides of the active layer, reflection layers provided at respective sides of the cavity spacer layers, the reflection layers reflecting an oscillation light oscillated in the active layer and a selective oxidation layer. The selective oxidation layer is provided between a location in the reflection layer corresponding to a fourth period node of the standing wave distribution of the electric field of the oscillating light and a location in the reflection layer adjacent to the foregoing fourth period node in the direction away from the active layer and corresponding to an anti-node of the standing wave distribution of the electric field of the oscillation light. | 2010-06-24 |
20100158066 | NITRIDE SEMICONDUCTOR LASER ELEMENT - A nitride semiconductor laser element includes a nitride semiconductor layer of a first conduction type, an active layer, and a nitride semiconductor layer of a second conduction type that is different from the first conduction type are laminated in that order, a cavity end face formed by the nitride semiconductor layers, and a protective film formed on the cavity end face. The nitride semiconductor layers of the first and second conduction types have layers containing Al, and the active layer has layer containing In. The protective film has a region in which an axial orientation of crystals is the same as that of the cavity end face on the nitride semiconductor layers of the first and second conduction types, and has another region in which an axial orientation of crystals is different from that of the cavity end face on the active layer. | 2010-06-24 |
20100158067 | OPTICAL MODULE - An optical module comprising a laser device adapted to emit a laser beam from a convex surface and including a horizontal resonator surface-emitting structure provided with a first lens through which an optical axis of the laser beam passes, and a second lens through which the laser beam having passed through the first lens passes, a surface opposed to the second lens-provided surface and the surface provided with the first lens being bonded together through a first adhesive transparent to the laser beam. | 2010-06-24 |
20100158068 | BLEED LEAKAGE DETECTION SYSTEM AND METHOD - A bleed leakage detection system includes an arrangement of thermostats that are capable of detecting the place where the bleed air leakage is occurring (e.g., the failed junction in bleed air duct work). The exemplary illustrative non-limiting implementation provides a bleed leakage detection system with continuous monitoring of thermostat sensor wiring during flight and thermostat self-test function (“Initiated Built In Test”—“IBIT”). The IBIT self-testing can be initiated before the aircraft takes off or optionally, during periodic self testing that may be run during predetermined periods such as overnight when the aircraft is not being flown. By the continuous monitoring the pilot is alerted when a bleed leakage has occurred or when the bleed leakage detection system has failed. | 2010-06-24 |
20100158069 | Micro heat flux sensor array - Provided is a micro heat flux sensor array having reduced heat resistance. A micro heat flux sensor array may include a substrate, a plurality of first sensors formed on a first side of the substrate, and a plurality of second sensors formed on a second side of the substrate. Each of the plurality of first and second sensors may include a first wiring pattern layer of a first conductive material, a second wiring pattern layer of a second conductive material contacting the first wiring pattern layer, and an insulating layer in contact with the first and second wiring patterns. | 2010-06-24 |
20100158070 | Method for Monitoring the Thermal Coupling of a Measuring Cell - A method for checking the quality of thermal coupling between a measuring cell and a thermostatted element of an analyzer, where the measuring cell can be exchangeably inserted into an analyzer to measure at least one parameter of a sample, and is provided with at least one sensor element in a measuring channel. | 2010-06-24 |
20100158071 | SURFACE ACOUSTIC WAVE BASED MICRO-SENSOR APPARATUS AND METHOD FOR SIMULTANEOUSLY MONITORING MULTIPLE CONDITIONS - A SAW-based micro-sensor apparatus for simultaneously monitoring acceleration/vibration and temperature utilizing a sensing element configured as a SAW device (e.g., SAW resonator or SAW delay line). The SAW device can be located in different locations on a substrate with respect to a thin piezoelectric diaphragm comprising an inertial mass. The temperature-compensated acceleration/vibration can be measured utilizing a frequency difference between an acceleration sensitive SAW resonator (e.g., SAW-g) and a temperature sensitive SAW resonator (e.g., SAW-T). The temperature can be measured utilizing a frequency shift provided by the SAW-T and a temperature reference SAW resonator (e.g., SAW-R). Similarly, the phase response of different reflectors of the SAW delay line can be utilized to differentially measure the acceleration/vibration and temperature. | 2010-06-24 |
20100158072 | DEVICE FOR MONITORING THE TEMPERATURE OF AN ELEMENT - A device for monitoring the temperature surrounding a circuit, including: a charge storage element; a charge evacuation device; and a thermo-mechanical switch connecting the storage element to the evacuation element, the switch being capable of closing without the circuit being electrically powered, when the temperature exceeds a threshold. | 2010-06-24 |
20100158073 | ARRANGEMENT OF SENSOR ELEMENTS FOR MEASURING THE TEMPERATURE - The present disclosure provides an arrangement of sensor elements for measuring the temperature in automation systems, for example. The sensor elements are integrated in a sensor head in such a manner so as to be coupled together with a medium to be measured. With the same electrical properties, the sensor elements differ in terms of at least one physical, non-electrical property. This can be achieved by means of structural measures on the sensor head and by means of a particular nature of the sensor element itself. This may involve different fillers in which the sensor elements are embedded. | 2010-06-24 |
20100158074 | MULTIPOINT PROBE ASSEMBLY AND METHOD - A probe assembly in a gas path of a gas turbine engine comprises a support casing having a first wall with throughbores. The support casing has a base mounted to a gas turbine engine proximate the gas path. The first wall extends radially into the gas path. The throughbores are provided at positions corresponding to different gas path radii. Wire units each have an end directed to an own throughbore, and an end exiting through an outlet of the casing and connected to a processing unit. Retaining members in the casing constrain movement of the wire units. Probes for each of the throughbores are configured for measuring the temperature/pressure. The probes each have a connector end received in a non-integral relation in the throughbore and connected to an associated wire unit, whereby the probes in the non-integral relation with the support casing measure parameters in the gas path. | 2010-06-24 |
20100158075 | Removal of modulated tonal interference - In some embodiments a phase between a periodic spreading signal and an effective spreading signal modulating an interfering harmonic is determined, an amplitude of the interfering harmonic is estimated, and the interfering harmonic is canceled from a received signal. Other embodiments are described and claimed. | 2010-06-24 |
20100158076 | Direct Sequence Spread Spectrum Correlation Method for a Multiprocessor Array - A method and apparatus for correlation of a received DSSS signal with a PN sequence, thus significantly reducing the processing time and operating power needed to acquire phase information for DSSS de-spreading and demodulation. The apparatus utilizes a multiprocessor array | 2010-06-24 |
20100158077 | SPREAD SPECTRUM TRANSCEIVER MODULE UTILIZING MULTIPLE MODE TRANSMISSION - A data transceiver module for digital data communications in a portable hand-held data terminal has multiple data spread spectrum modes which include direct sequence and frequency function modulation algorithms. The transceiver module has multiple user or program configurable data rates, modulation, channelization and process gain in order to maximize the performance of radio data transmissions and to maximize interference immunity. Various module housings, which may be PCMCIA type, are able to be mated with a suitably designed data terminal. Media access control protocols and interfaces of multiple nominal operational frequencies are utilized. Wireless access devices in a cell based network each consider a variety of factors when choosing one of a plurality of modes of wireless operation and associated operating parameters. Such selection defines a communication channel to support wireless data, message and communication exchanges. In further embodiments, the wireless access devices also support a second channel, a busy/control channel, for managing communication on the main communication channel and to overcome roaming and hidden terminal problems. Roaming terminal devices are also configured to support the dual channel design. Such configuration in both circumstances may involve the use of a multimode radio that is timeshared between the two channels or two radios, one dedicated to each channel. | 2010-06-24 |
20100158078 | METHOD AND APPARATUS FOR FREQUENCY ASSIGNMENT IN A FREQUENCY HOPPING MODE OF A WIRELESS COMMUNICATION SYSTEM - A frequency allocation method and apparatus using a mirroring-assisted frequency hopping pattern is provided for retransmission in a wireless communication system operating in frequency hopping mode. A frequency allocation method for a wireless communication system operating in frequency hopping mode includes generating a mirroring pattern having a mirroring-assisted frequency hopping interval identical with a data retransmission interval; and allocating different frequency bands for an initial transmission and retransmission by performing frequency hopping according to the mirroring pattern. Preferably, the mirroring-assisted frequency hopping interval is shorter than the data retransmission interval. | 2010-06-24 |
20100158079 | ID-CELL INDEX SEARCH ALGORITHM AND CARRIER FREQUENCY OFFSET ESTIMATION - Techniques for initial wireless network synchronization by a mobile station are provided. For certain embodiments, the techniques may involve a joint search for the cell identification (ID-cell index) and the coarse carrier frequency offset (CFO) estimation. For certain embodiments, the techniques may be based on hard correlation and binary differential despreading that substantially simplifies computational complexity compare to known techniques that independently search for the ID-cell index and perform CFO estimation. | 2010-06-24 |
20100158080 | WIRELESS RECEPTION DEVICE, WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD - A wireless reception device which communicates with a wireless transmission device which has a plurality of transmission antennas, includes at least one reception antenna which receives a plurality of transmission signals transmitted from the plurality of transmission antennas of the wireless transmission device; a channel response estimation unit which estimates a channel response between a plurality of transmission antennas and the reception antenna; a block dividing unit which divides a reception signal of at least one reception antennas into a plurality of blocks; and a transmission signal detection unit which detects the plurality of transmission signals transmitted by the wireless transmission device based on a plurality of reception signals divided by the block dividing unit and the channel response estimated by the channel response estimation unit. | 2010-06-24 |
20100158081 | Memory reduction in GNSS receiver - Radiolocalization receiver with a massively parallel array of correlators, comprising a data compression module ( | 2010-06-24 |
20100158082 | TRANSDUCER - A transducer for converting an input signal fed to a first input ( | 2010-06-24 |
20100158083 | REDUCING POWER LEVELS ASSOCIATED WITH TWO OR MORE SIGNALS USING PEAK REDUCTION DISTORTION THAT IS DERIVED FROM A COMBINED SIGNAL - The present invention provides a technique for reducing power levels associated with two or more input signals using peak reduction distortion that is derived from a combined signal, which represents a combination of the input signals. | 2010-06-24 |
20100158084 | HIGH FREQUENCY SYSTEM ON CHIP TRANSCEIVER - A system-on-chip (SOC) transceiver is provided. The transceiver is configured to operate in excess of 100 GHz and comprising the following components. A quadrature oscillator is configured to generate a fundamental frequency and a second harmonic frequency and comprises at least a pair of high frequency outputs at said second harmonic frequency. At least the second harmonic frequency exceeds 100 GHz. A transmission output is coupled to one of the high frequency outputs for transmitting an output signal at the second harmonic frequency. A transmission signal transformer is coupled to the other one of the high frequency outputs and configured to generate a differential oscillator signal at the second harmonic frequency. A radio frequency input receives radio frequency signals at the transceiver from an antenna. A radio frequency signal transformer coupled to the radio frequency input is configured to generate a differential radio frequency signal at the radio frequency. A mixer is configure to compare the differential radio frequency signal with the differential oscillator signal and output the comparison as an intermediate frequency signal. | 2010-06-24 |
20100158085 | FEEDFORWARD RECEIVER AND METHOD FOR REDUCING INTER-SYMBOL INTERFERENCE BY USING JOINT SOFT VALUES - A feedforward receiver and method are described herein that address inter-symbol interference in received symbols by using an enhanced equalizer to generate joint soft values (joint information of a previous modem bit x′ and a modem bit x) and an enhanced decoder which uses the joint soft values and side information (bias about the previous modem bit x′) to output a more reliable information bit x. | 2010-06-24 |
20100158086 | CABLE MODEM AND METHOD OF PERFORMING CHANNEL BONDING USING DIGITAL UPCONVERTER - A cable modem is provided. The cable modem may include: a plurality of modulators to generate a plurality of pieces of digital data corresponding to a plurality of independent channels; a plurality of digital upconverters to up-convert a frequency of each of the plurality of pieces of digital data into a predetermined frequency; and a Radio Frequency (RF) processor to channel-bond outputs of the plurality of digital upconverters into at least one channel, and generate an analog output signal, the outputs having the predetermined frequency. | 2010-06-24 |
20100158087 | Method and System for Detecting a First Symbol Sequence in a Data Signal, Method and System for Generating a Sub-Sequence of a Transmission Symbol Sequence, and Computer Program Products - A method for detecting a first symbol sequence in a data signal is described comprising receiving the data signal in which the first symbol sequence should be detected, wherein the first symbol sequence is expressable as the kronecker product of a second symbol sequence and a third symbol sequence; correlating the first symbol sequence with the third symbol sequence to generate a first correlation result; generating a second correlation result by correlating a fourth symbol sequence derived from the first correlation result with a fifth symbol sequence derived from the second symbol sequence by a transformation that maps all negative symbols of the second symbol sequence to non-negative symbols; and generating a detection result based on the second correlation result. | 2010-06-24 |
20100158088 | PORTABLE APPARATUS AND METHOD OF MEASURING WIRELESS CHANNEL AND MULTIPLE ANTENNA CORRELATION - A portable apparatus of measuring a wireless channel and a multiple antenna correlation, the apparatus including: a Radio Frequency (RF) unit to control a frequency of a signal to be measured, to broadcast the signal to be measured through multiple transmission antennas, to control a frequency of a received signal, and to send the received signal to the baseband unit, the received signal being received through multiple receiving antennas; and a baseband unit to generate and transmit, to the RF unit, the signal to be measured, to measure wireless channels for each of the multiple transmission antennas and wireless channels for each of the multiple receiving antennas based on the received signal output from the RF unit, to calculate a correlation for each of the multiple transmission antennas, and to calculate a correlation for each of the multiple receiving antennas based on the wireless channels for each of the multiple transmission and receiving antennas. | 2010-06-24 |
20100158089 | CHANNEL ESTIMATION METHOD AND APPARATUS FOR WIRELESS COMMUNICATION SYSTEM - A channel estimation method and apparatus using a self-tracking algorithm is provided for improving channel estimation accuracy. The channel estimation apparatus of a mobile terminal includes a receiver for converting a received radio signal into a baseband signal, a match filter for converting the baseband signal into a digital signal including at least two samples, a channel estimator for buffering the samples, for analyzing multipath signals to predict a maximum power position and multipath energy, and for estimating a channel by selecting a multi-tap at the maximum power position through a slew control, an equalization controller for calculating an equalization tap gain using the multi-tap selected by the channel estimator, and an equalizer for compensating for distortion in the samples output by the channel estimator using the equalization tap gain calculated by the equalization controller. | 2010-06-24 |
20100158090 | CARRIER RECOVERING APPARATUS AND CARRIER RECOVERING METHOD - A carrier recovering apparatus, in which degradation of the demodulation performance caused when a pilot signal cannot be normally received is suppressed, includes a rotation calculator for multiplying a baseband signal and an oscillation signal and outputting a multiplied signal; a pilot signal extractor for extracting a pilot signal from the signal output from the rotation calculator; an error detection controller for outputting a phase error between the pilot signal and a reference signal as a value restricted within a given range; a loop filter for smoothing the phase error output from the error detection controller and outputting the smoothed phase error; and a variable frequency oscillator for generating a signal in accordance with the output of the loop filter and outputting the generated signal as the oscillation signal. | 2010-06-24 |
20100158091 | FREQUENCY ERROR ESTIMATOR AND FREQUENCY ERROR ESTIMATING METHOD THEREOF - Provided is a frequency error estimating method of a communication system. The method includes receiving a frame, and calculating a frequency error from a SOF field of the received frame. | 2010-06-24 |
20100158092 | JITTER ADDITION APPARATUS AND TEST APPARATUS - Provided is a jitter injection apparatus that injects jitter into a signal, comprising: a plurality of jitter injecting sections that are provided in series in a transmission path that propagates the signal; an output section that selects the signal that is passed from a jitter injecting section at a first stage through a designated jitter injecting section, and outputs the selected signal; and a plurality of branch-path jitter injecting sections that (i) are provided in a plurality of branch paths that propagate the signal output by each jitter injecting section from the transmission path to the output section and (ii) are relays having frequency characteristics of attenuating a high-frequency band more than a low-frequency band | 2010-06-24 |
20100158093 | Methods and System for Determining a Dominant Impairment of an Impaired Communication Channel - Methods are described for identifying a dominant impairment on a communication channel impaired by an interference issue. The methods include systematic examination of total power loading, systematic examination of signal power reduction, statistical examination of communication channel noise power, and systematic examination of interleaver effectiveness. Each relates to automatically diagnosing and characterizing distortion-based interference issues by monitoring the performance of a communication channel during a testing procedure. These methods enable a technician or engineer to remotely diagnose distortion-based interference issues relatively quickly without having to use external test equipment and without having to deploy technicians to various locations within the cable plant. A system by which these methods can be implemented is also disclosed. | 2010-06-24 |