53rd week of 2009 patent applcation highlights part 36 |
Patent application number | Title | Published |
20090323677 | SEPARATION OF VALIDATION SERVICES IN VOIP ADDRESS DISCOVERY SYSTEM - In one embodiment, an apparatus may receive at least one call attribute of a public switched telephone network (PSTN) call initiated to a destination telephone number. The apparatus may verify a destination Voice-over-Internet-Protocol (VoIP) call agent for the destination telephone number based on demonstrated knowledge of the PSTN call. The apparatus may transmit an indication the destination VoIP call agent is verified for the destination telephone number. | 2009-12-31 |
20090323678 | SYSTEM AND METHOD FOR ALLOCATING SESSION INITIATION PROTOCOL (SIP) IDENTIFICATIONS (IDs) TO USER AGENTS - A communications system includes a Session Initiation Protocol (SIP) user agent. A server communicates with the SIP user agent and allocates an SIP ID for the user agent for subsequent communications using SIP. A database can be associated with the server and contain data relating to free SIP ID's that can be allocated to the SIP user agent and allocated SIP ID's. | 2009-12-31 |
20090323679 | SYSTEMS, PROCESSES AND INTEGRATED CIRCUITS FOR RATE AND/OR DIVERSITY ADAPTATION FOR PACKET COMMUNICATIONS - Packets of real-time information are sent with a source rate greater than zero kilobits per second, and a time or path or combined time/path diversity rate initially being zero kilobits per second. This results in a quality of service QoS, optionally measured at the sender or the receiver. When the QoS is on an unacceptable side of a threshold of acceptability, the sender sends diversity packets at an increased rate. Increasing the diversity rate while either reducing or maintaining the overall transmission rate is new. CELP-based multiple-description data partitioning sends the base or important information plus a subset of fixed excitation in one packet and sends the base or important information plus the complementary subset of fixed excitation in another packet. Reconstruction produces acceptable quality when only one of the two packets is received and better quality when both packets are received. Reconstruction provides for single and multiple lost packets. | 2009-12-31 |
20090323680 | Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones - A packet-based, hierarchical communication system, arranged in a spanning tree configuration, is described in which wired and wireless communication networks exhibiting substantially different characteristics are employed in an overall scheme to link portable or mobile computing devices. The network accommodates real time voice transmission both through dedicated, scheduled bandwidth and through a packet-based routing within the confines and constraints of a data network. Conversion and call processing circuitry is also disclosed which enables access devices and personal computers to adapt voice information between analog voice stream and digital voice packet formats as proves necessary. Routing pathways include wireless spanning tree networks, wide area networks, telephone switching networks, internet, etc., in a manner virtually transparent to the user. A voice session and associate call setup simulates that of conventional telephone switching network, providing well-understood functionality common to any mobile, remote or stationary terminal, phone, computer, etc. | 2009-12-31 |
20090323681 | POLICY-BASED ROUTING IN A MULTI-HOMED COMPUTER - Policy-based routing system and method for a multi-homed computer. Policy-based routing permits or blocks usage of system level route(s) based on user credentials and/or network application(s) associated with a data transfer. The credentials can include information associated with an application, a user, and the like. Optionally, one or more filter(s) can be configured over classifiable field(s), such as credential(s), information associated with a determined proposed route, to statically permit/block route usage and/or to invoke an inspection module (e.g., custom inspection routine) when the filter condition(s) are met. | 2009-12-31 |
20090323682 | Method for Identifying the Transmission Control Protocol Stack of a Connection - A method for identifying the TCP stack type of a transmitting node is disclosed in which a SYN packet is identified by the setting of the SYN bit in the packet. Following the identification of a set SYN bit in the SYN packet, the content of the data field includes a code to identify the TCP stack type associated with the node that transmitted the SYN packet. | 2009-12-31 |
20090323683 | DIGITAL BROADCASTING SYSTEM AND DATA PROCESSING METHOD - A digital broadcasting system and a method of processing data are disclosed, which are robust to error when mobile service data are transmitted. To this end, additional encoding is performed for the mobile service data, whereby it is possible to strongly cope with fast channel change while giving robustness to the mobile service data. | 2009-12-31 |
20090323684 | DYNAMIC BITLOADING - The subject matter disclosed herein relates to dynamically adjusting bitloading for multiple destinations on a network. | 2009-12-31 |
20090323685 | BIT ORDERING FOR PACKETISED SERIAL DATA TRANSMISSION ON AN INTEGRATED CIRCUIT - An on-chip integrated circuit interconnect | 2009-12-31 |
20090323686 | METHODS AND APPARATUSES TO REDUCE CONTEXT SWITCHING DURING DATA TRANSMISSION AND RECEPTION IN A MULTI-PROCESSOR DEVICE - A method and apparatus are provided for efficiently transferring data between a first and second processors having shared memory. A plurality of data packets are aggregated into a packet bundle at the first processor. The packet bundle is then transferred from the first processor to the second processor using the shared memory, wherein the transfer of the packet bundle is performed in a single context switch at the first processor. The packet bundle is then unbundled into individual data packets at the second processor, wherein a processing load of the second processor is reduced due to the aggregation of the data packets into the packet bundle by the first processor. | 2009-12-31 |
20090323687 | ROUTING CONTROL METHOD, COMMUNICATION APPARATUS AND COMMUNICTION SYSTEM - A routing control method includes learning a route of receiving a first packet, which first packet has identification information attached thereto, only for the first packet having first arrived among a plurality of first packets that have identification information common to that of the first packet, which route is applied for transmitting a second packet having the same identification information as that of the first packet; and transmitting the first packet, wherein transmitting the first packet is done in a controlled manner depending on a condition of the first packet, wherein the controlled manner of transmitting the first packet includes controlling timing of the transmitting the first packet. | 2009-12-31 |
20090323688 | INFORMATION PROCESSING APPARATUS,IMAGE PROCESSING APPARATUS, CONTROL METHOD, AND STORAGE MEDIUM - An information processing apparatus which make it possible to search from an information processing apparatus, for an IPv6-compatible image processing apparatus which has an IPv6 network address designated by the information processing apparatus. A device management application determines search conditions, and specifies information associated with a designated network. Further, the device management application generates a IPv6 multicast address using the thus specified information, transmits a search message designating the IPv6 multicast address, and receives a response transmitted from an image processing apparatus associated with the IPv6 multicast address. | 2009-12-31 |
20090323689 | EDGE SWITCH AND FORWARDING TABLE REWRITING METHOD - An edge switch that switches a frame between a user network and a wide area network includes an access port to connect a communication module including a storage unit storing a first identification number identifying which access port the communication module is connected to; an identification number storage unit storing a second identification number assigned to the access port; a control circuit capable of detecting a connection of the communication module; a reading unit to read the first identification number upon detection of the connection; a switchover determination unit to read the second identification number of the access port to which the connection has been detected, to compare the second and first identification numbers, and to determine that a switchover has occurred if they do not match; and a writing unit to write to the storage unit the second identification number when the switchover is determined to have occurred. | 2009-12-31 |
20090323690 | METHOD AND SYSTEM FOR CLASSIFYING PACKETS IN A NETWORK INTERFACE CARD AND INTERFACE FOR PERFORMING THE SAME - A method for processing packets. The method includes receiving a first packet by a network interface card (NIC) from a network, determining, using a first classification level, a first receive ring group (RRG) for the first packet, determining, using a second level classification, a first receive ring (RR) in the first RRG for the first packet, sending the first packet to the first RR, and sending the first packet from the first RR to a host operatively connected to the network interface card, wherein the first packet is received by a first virtual network interface card (VNIC) associated with the first RRG, where the first RRG is located in the NIC. | 2009-12-31 |
20090323691 | METHOD AND APPARATUS TO PROVIDE VIRTUAL TOE INTERFACE WITH FAIL-OVER - A method for processing packets. The method includes receiving a first packet by a first socket on a host, determining by the first socket to process the first packet using a first virtual Transmission Control Protocol offload engine (VTOE), transmitting the first packet to the first VTOE, wherein transmitting the first packet to the first VTOE bypasses a first virtual network stack interposed between the first socket and first VTOE, transmitting the first packet to a HW TOE operatively connected to the host, processing the first packet, using the HW TOE, to obtain a first processed packet; and transmitting the first processed packet to a network operatively connected to the HW TOE, where the HW TOE is associated with the first VTOE and a second VTOE in the host. | 2009-12-31 |
20090323692 | Hashing packet contents to determine a processor - The disclosure includes a description of an apparatus having circuitry to determine a first hash value for a first packet tuple of a first packet traveling in a first direction of a duplex connection and determine a processor for the first packet from a set of multiple processors based, at least in part, on the first hash value. The apparatus includes circuitry to determine a second hash value for a second packet tuple of a second packet traveling in a second direction of the duplex connection and determine the same processor for the second packet from the set of multiple processors based, at least in part, on the second hash value. | 2009-12-31 |
20090323693 | Method and apparatus for managing route information and forwarding data in access devices - The present invention provides a method for creating routes in access devices of the communication network by using access response messages. With the method provided by the present invention, services can be distinguished and forwarded based on destination IP sub-networks, so that different services can be distributed in access devices. In this way, on the premise that services are distinguished based on layer 3, the requirements for access devices are reduced and layer 2 networks on the user side are not required to carry out route protocols, which decreases administrators' maintenance work and is the important condition for the realization of plug&play and reduces the requirements for marginal routers. | 2009-12-31 |
20090323694 | LABEL SWITCHING TYPE OF PACKET FORWARDING APPARATUS - A label switching type packet forwarding apparatus having a routing information table in which a forwarding type of a reception packet, output port identification information, and output routing information of a specific layer in the OSI reference model determined by the forwarding type are defined in correspondence with routing information which is found upon reception of a packet, for converting a header of a reception packet in accordance with the packet forwarding type and the output routing information obtained by a table search. | 2009-12-31 |
20090323695 | TWO-DIMENSIONAL PIPELINED SCHEDULING TECHNIQUE - A scheduler allowing high-speed scheduling scalable with the number of input and output ports of a crosspoint switch and suppressed unfairness among inputs is disclosed. The scheduler includes an M×M matrix of scheduling modules, each of which schedules packet forwarding connections from a corresponding input group of input ports to selected ones of a corresponding output group of output ports based on reservation information. A diagonal modulo pattern is used to determine a set of M scheduling modules to avoid coming into collision with each other. Each determined scheduling module performs reservation of packet forwarding connections based on current reservation information and transfers updated reservation information in row and column directions of the M×M matrix. | 2009-12-31 |
20090323696 | METHOD OF PROVIDING A SUCCESSOR LIST - The invention concerns a method of providing a successor list (L) for routing in a peer-to-peer overlay network (N), and a network node and a computer program product to execute this method. The peer-to-peer overlay network (N) comprises a plurality of nodes ( | 2009-12-31 |
20090323697 | DATA PAYLOAD TRANSMISSION VIA CONTROL PLANE SIGNALING - A system for implementing a communication transports in a configuration that may utilize control plane resources for the conveyance of data. A communication protocol may be originally designed to support planned data conveyance at a data plane. This strategy may improve quality of service for the transport, but may impact the execution speed of communication due to the required overhead involved in scheduling. In view of this limitation, messages that are sensitive to delay may be negatively impacted by scheduling steps occurring in mediums such as described above. Execution speed may be increased by routing certain payloads to the control plane for transmission in a beacon signal, which avoids the overhead inherent in the data plane. | 2009-12-31 |
20090323698 | PURE CONTROL-PLANE APPROACH FOR ON-PATH CONNECTION ADMISSION CONTROL OPERATIONS IN MULTIPROTOCOL LABEL SWITCHING VIRTUAL PRIVATE NETWORKS - The embodiments described herein present methods and apparatuses for on-path CAC operations in a MPLS-VPN environment. In an example embodiment, an ingress PE device receives a quality of service (QoS) resource reservation request; constructs an outgoing message that includes information allowing an egress PE device to identify the virtual private network routing and forwarding table (VRF) associated with a resource reservation resulting from the QoS resource reservation request; and transmits the outgoing message to the egress PE device, where the information allowing VRF identification is echoed back by the egress PE device and used by the ingress PE device to identify the VRF associated with the resource reservation resulting from the QoS resource reservation request. Other embodiments are described. | 2009-12-31 |
20090323699 | System And Method For Intelligent Signal Routing In A Television Production Studio - A system for signal routing in a television production studio includes a core router operatively coupled to a plurality of peripheral routers, each of the plurality of peripheral routers having an associated control system, and a core router control system coupled to the core router and to coupled to the plurality of peripheral routers, the core router control system configured to allow any peripheral router to communicate with any other peripheral router through the core router and irrespective of the control system associated with each peripheral router. | 2009-12-31 |
20090323700 | METHOD OF DETERMINING A ROUTING PATH - The invention concerns a method of determining a routing path in a peer-to-peer overlay network (N), and a network node ( | 2009-12-31 |
20090323701 | ROUTING ENGINE FOR TELECOMMUNICATIONS NETWORK - A system for automated installation of a communication line using an optimal route between a source location and a destination location is disclosed. The system includes a routing engine providing an automated design process for rendering the optimal route. The routing engine utilizes a routing algorithm to select the optimal route from a graph of capacity links defining a plurality of possible routes between the source and destination locations. If, at any time during the design process, the optimal route or capacity links defining the optimal route are detected as unavailable for any reason, the routing engine re-initiates the design process and thereafter selects a new optimal route based upon a new capacity graph built without the previously unavailable capacity link. Once designed, the available optimal route is provided to a command and control engine, which, in turn, manages the installation of the communication line using the optimal route. The command and control engine manages the process for assigning the optimal route in the provisioning system. | 2009-12-31 |
20090323702 | ROUTING ENGINE FOR TELECOMMUNICATIONS NETWORK - A system for automated installation of a communication line using an optimal route between a source location and a destination location is disclosed. The system includes a routing engine providing an automated design process for rendering the optimal route. The routing engine utilizes a routing algorithm to select the optimal route from a graph of capacity links defining a plurality of possible routes between the source and destination locations. If, at any time during the design process, the optimal route or capacity links defining the optimal route are detected as unavailable for any reason, the routing engine re-initiates the design process and thereafter selects a new optimal route based upon a new capacity graph built without the previously unavailable capacity link. Once designed, the available optimal route is provided to a command and control engine, which, in turn, manages the installation of the communication line using the optimal route. The command and control engine manages the process for assigning the optimal route in the provisioning system. | 2009-12-31 |
20090323703 | Method and System for Secure Communication Between a Public Network and a Local Network - A method for secure communication between a local area network and a wide area network includes integrating a NAT functionality in a firewall associated with the local area network, wherein the NAT functionality is suitable to translate the source port of outgoing data packets with a NAT port value obtained by adding to a NAT offset value the value of the session ED used in a session database. When reply data packets coming from the wide area network are received by the firewall, the session ID is extracted from the NAT port value and is used for directly pointing to the session database, thus reducing the time required to recognize the session. | 2009-12-31 |
20090323704 | HYBRID TOPOLOGY ETHERNET ARCHITECTURE - A distributed control system comprises a first network section comprising one or more control nodes containing control logic operable to perform control function computations; a second network section, wherein the second network section comprises; a plurality of additional nodes responsive to the one or more control nodes in the first network section, each of the plurality of additional nodes communicatively coupled to two neighbor nodes and to two skip nodes using a plurality of links; first and second gateway interfaces each coupled to the first and second network sections and each operable to interface the first network section to the second network section; wherein the first network section is operable to communicate signals using a first communication protocol; and wherein the plurality of nodes in the second network section are operable to communicate signals over the plurality of links using a second communication protocol that is different from the first communication protocol. | 2009-12-31 |
20090323705 | METHOD FOR IMPLEMENTING PHOTOELECTRIC MUTEX, ETHERNET PHOTOELECTRIC MUTEX INTERFACE DEVICE AND NETWORK EQUIPMENT - A method for implementing photoelectric mutex, an Ethernet photoelectric mutex interface device, and network equipment are provided. The Ethernet photoelectric mutex interface device includes a channel switching module, a first Ethernet physical layer (PHY) chip, and a second Ethernet PHY chip. The channel switching module is connected to the first Ethernet PHY chip through a first interface and connected to the second Ethernet PHY chip through a second interface respectively, and is adapted to perform data transmission through the first Ethernet PHY chip and when a presence signal of an optical interface data transmission module is detected, perform data transmission through the second Ethernet PHY chip. Thus, a cost of equipment for implementing a photoelectric mutex function in an Ethernet is reduced, and a utilization rate of transmission resources is improved. | 2009-12-31 |
20090323706 | Dynamic Networking of Virtual Machines - The invention is directed to the use of Provider Backbone Bridging (PBB) technology with Shortest Path Bridging, also called Provider Link State Bridging (PLSB) technology in the context of data centers and virtualized physical servers infrastructures. Virtual servers can be located anywhere inside the data center, or across different data centers, and still act as though they are physically adjacent and share the same Ethernet connectivity. Ethernet virtual machine VLan memberships are mapped to PBB Service Identifiers (I-SIDs). PBB I-SIDs extend the connectivity model to every Ethernet switches in the local, metropolitan or wide area networks. PLSB complements the connectivity by providing dynamic distribution and mapping of I-SID endpoints in the PBB domain. Virtual servers can then be added, removed or transferred to another point in the network and PLSB adjusts the VLan/I-SID specific connectivity pattern to match the physical distribution of the servers. | 2009-12-31 |
20090323707 | PACKET SWITCH AND SWITCHING METHOD FOR SWITCHING VARIABLE LENGTH PACKETS - A packet switch for switching variable length packets, wherein each of output port interfaces includes a buffer memory for storing transmission packets, a transmission priority controller for classifying, based on a predetermined algorithm, transmission packets passed from a packet switching unit into a plurality of queue groups to which individual bandwidths are assigned respectively, and queuing said transmission packets in said buffer memory so as to form a plurality of queues according to transmission priority in each of said queue groups, and a packet read-out controller for reading out said transmission packets from each of said queue groups in the buffer memory according to the order of transmission priority of the packets while guaranteeing the bandwidth assigned to the queue group. | 2009-12-31 |
20090323708 | Subscriber and Communication Controller of a communication System and Method for Implementing a Gateway Functionality in a Subscriber of a Communication System - A subscriber of a communication system includes a microprocessor, at least two communication controllers and a peripheral bus. The microprocessor is connected to the communication controllers via the peripheral bus and is also connected via the communication controllers respectively to a communication link of the communication system, via which messages are transmitted. In order to optimize the gateway functionality within the subscriber, a provision is made that at least one of the communication controllers has an active interface via which the communication controller is connected to the peripheral bus and has a logic circuit for independently implementing a gateway functionality. | 2009-12-31 |
20090323709 | Determining and Distributing Routing Paths for Nodes in a Network - Disclosed are, inter alia, methods, apparatus, computer-storage media, mechanisms, and means associated with determining and distributing routing paths for nodes in a network. For each route computational node of multiple route computational nodes in a network: a tree of paths between itself and each of multiple nodes in the network is determined. A particular tree of paths is determined for a particular node of these multiple nodes to the other nodes based on at least two of the determined trees of paths for the route computational nodes. The particular node then sends a packet towards a destination based on the particular tree of paths determined for the particular node. | 2009-12-31 |
20090323710 | METHOD FOR PROCESSING INFORMATION FRAGMENTS AND A DEVICE HAVING INFORMATION FRAGMENT PROCESSING CAPABILITIES - A device and method for processing information fragments, the method includes: receiving multiple information fragments from multiple communication paths; wherein the each information fragment is associated with a cyclic serial number indicating of a generation time of the information fragment; storing the multiple information fragments in multiple input queues, each input queue being associated with a communication path out of the multiple communication paths; determining whether at least one serial number associated with at least one valid information fragment positioned in a head of one of the multiple input queues is located within a pre-rollout serial number range; mapping, in response to the determination, serial numbers associated with each of the valid information fragment positioned in the heads of the multiple input queues to at least one serial number range that differs from the pre-rollout serial number range; and sending to an output queue information fragment metadata associated with a minimal valued serial number out of the serial numbers associated with each of the valid information fragment positioned in the heads of the multiple input queues. | 2009-12-31 |
20090323711 | Service system for a building - A control system adapted to provide an IT structure for a building. The system includes a plurality of interconnectible units each including Ethernet capability with I/O serial connections, a head end unit, and a room unit, the units being connected in series and being modular whereby to provide an IT system for a whole building. A unit for use in such a single network structure includes a first connector for supporting an in-bound feed from a source external to the unit and a second connector adapted for data distribution to a data recipient element. | 2009-12-31 |
20090323712 | Method and arrangements for reservation of resources in a data network - The present invention relates to a method and arrangements associated with a Bandwidth Manager, BM, adapted to reserve network resources requested from clients for resource objects in a data network. The arrangement comprises means for determining a second amount of resources to be allocated in addition to the required first amount defined by the resource requests from the clients, wherein the second amount of resources to be determined is dependent on the rate at which the first and second amounts of allocated resources can be increased through admitted requests for more resources. | 2009-12-31 |
20090323713 | COMMUNICATION OF ACTIVE DATA FLOWS BETWEEN A TRANSPORT MODEM TERMINATION SYSTEM AND CABLE TRANSPORT MODEMS - Multiplexing of information from a plurality of information flows into fixed-length packets such as, but not limited to, MPEG packets allows efficient utilization of bandwidth and also can be used to reduce transmission latency. In addition, utilizing MPEG packets and transport streams for octet multiplexing allows the packets carrying octet-multiplexed data to easily be integrated with other MPEG packets for other services that are commonly found in cable transmission networks of all coax, hybrid fiber coax, and/or all fiber. The multiplexing/demultiplexing of octets using MPEG packets generally is described by mappings that specify the use of octets in MPEG packets. Changes to allocations in a map generally should be propagated in a way that reliably ensures that both the transmitter and receiver have a consistent view of the octet mappings. | 2009-12-31 |
20090323714 | METHOD AND APPARATUS FOR RESERVING CHANNEL CAPACITY - An approach is provided for reserving channel capacity. A device indicates non-use of a reservation of a resource of a frame corresponding to a channel access mechanism using a beacon transmission within a beacon period of the frame. Additionally, the device indicates that the reservation, in a data period of the frame, is temporarily freed. | 2009-12-31 |
20090323715 | PROTOCOL FOR NATIVE SERVICE TRANSPORT OVER POINT-TO-MULTIPOINT PASSIVE OPTICAL NETWORKS - A method for information transfer allowing for native transfer of voice, data, and any other digital service information over a passive optical network, comprising; the LT transmitting downstream in serially ordered frames broadcast to all of the NT's at a fixed interval; the NT's transmitting upstream in serially ordered frames, said frames being divided into serially ordered time slots, at most one NT transmitting information for at most one service type in each slot; the LT and the NT's exchanging management information, and the LT and the NT's natively transporting service information to each other in both the upstream and downstream directions, according to said management information exchanged between the LT and the NT's. | 2009-12-31 |
20090323716 | METHOD FOR REDUCING LATENCY OF WIRELESS DATA PACKET DELIVERY - A wireless data transmission method includes providing a plurality of radio frequency transmitters. A receiver is provided to receive transmissions from the transmitters. A data format including a plurality of transmission time slots is defined. Each of the transmitters is caused to independently select one of the time slots. The transmitters are used to transmit the transmissions to the receiver in the independently selected time slots. | 2009-12-31 |
20090323717 | SYSTEM AND METHOD OF PROVIDING ELECTRICAL ISOLATION - In a particular embodiment, a system includes an input/output (I/O) interface adapted to couple to a network cable to receive power and data and includes a physical transport layer (PHY) circuit including multiple channels coupled to the I/O interface. The PHY circuit is adapted to send data to and receive data from a network device via the multiple channels. The system further includes a multiplexer circuit coupled to the PHY circuit to multiplex data from the multiple channels into a multiplexed data stream and includes an isolation barrier circuit coupled to the multiplexer circuit and to a particular circuit. The isolation barrier is adapted to electrically isolate a particular circuit from the multiplexer circuit, the PHY circuit, and the I/O interface. | 2009-12-31 |
20090323718 | SYSTEM AND METHOD TO SECURE COMMUNICATIONS OVER A PUBLIC NETWORK - Systems, methods and apparatus are provided through which in some aspects a method to provide secure communications between a plurality of computers over a public network includes establishing a connection over the public network between the plurality of computers by mimicking hypertext transport protocol (HTTP) enterprise tunnel (HET) server protocol and changing the connection to a multiplexing protocol. | 2009-12-31 |
20090323719 | METHODS AND APPARATUS FOR TRANSFORMING FIRST TRANSPORT STREAM OF FIRST FORMAT INTO SECOND TRANSPORT STREAM OF SECOND FORMAT BY EMULATING ARRIVAL TIME STAMP INFORMATION - A method for transforming a first transport stream of a first format into a second transport stream of a second format includes deriving at least one program clock reference (PCR) value from the first transport stream, and calculating an arrival time stamp value according to the PCR value. In addition, the method further includes generating a header carrying at least the arrival time stamp value, and outputting the second transport stream. Additionally, the second transport stream comprises the header and a second packet corresponding to a first packet of the first transport stream. | 2009-12-31 |
20090323720 | CHANNEL MANAGEMENT VIA LINK PARAMETER ADJUSTMENT - A system for allocating communication resources in an apparatus. For example, an apparatus that is enabled to support a plurality of wireless transports may identify a resource-intensive task to be executed using a wireless transport. Prior to the execution of the resource-intensive task, the apparatus may determine if any wireless links already exist, and whether to alter operational parameters for one or more of the existing wireless links in order to make resources available for expediting completion of the resource-intensive task. | 2009-12-31 |
20090323721 | METHOD FOR MANAGING DATA TRANSFER SERVICES ON A NETWORK - The present invention relates to a method for managing traffic transfer services on a network. One of the present methods determines priority reference ensuring to retrieve bandwidth greater than necessary bandwidth, if current available bandwidth is not sufficient for a new connection, and selected selects a combination of in-service connections whose priority is not higher than the determined priority reference such that the selected combination is able to return the necessary bandwidth and the number of connections in the selected combination is smallest as well. The connections pertaining to the selected combination are pre-empted to permit access of the new connection to the network. | 2009-12-31 |
20090323722 | LINK AND LANE LEVEL PACKETIZATION SCHEME OF ENCODING IN SERIAL LINKS - A novel encoding scheme is disclosed, enabling the physical layer to identify packet boundaries by looking at a few selected bits while improving the error detection capability and maintaining low overhead for low power states. By eliminating the overhead of 8b/10b encoding for the physical layer, the encoding scheme achieves better error detection ability than current 8b/10b encoding. Further, the novel encoding scheme provides additional error detection capability, a low overhead mechanism to exit low power states, and a mechanism to handle problematic packets. | 2009-12-31 |
20090323723 | Wireless communication apparatus and packet transfer method thereof - A WUSB host (or a WUSB device) transmits a combined information packet and a combined packet to the WUSB device (or the WUSB host). The combined information packet is specified with each packet length of a plurality of packets having a packet length other than a predetermined transfer unit or different packet length. The combined packet is the plurality of packets combined. At this time, the WUSB host transmits the combined information packet to a control endpoint included in the wireless USB device and transmits the combined packet to a bulk OUT endpoint. The WUSB device (or the WUSB host) divides the combined packet into the plurality of packets based on the combined information packet. | 2009-12-31 |
20090323724 | FREQUENCY COMBINER SYSTEM AND RELATED METHODS - A combiner system for frequency combining and related methods. Implementations may include a plurality of combiner stages each including a deinterleaver, at least one filter, a frequency downconverter, and a frequency upconverter all operatively coupled together. Each of the plurality of combiner stages may be adapted to receive a complex interleaved input signal including two or more input signals each including a bandwidth, to output a complex stage output signal including the two or more input signals, and to alternately place the bandwidth of each of the two or more input signals in an upper portion and in a lower portion of an output bandwidth of the complex stage output signal. The upper portion and lower portion of the output bandwidth may be contiguous within the output bandwidth and joined at a center of the output bandwidth. | 2009-12-31 |
20090323725 | Data transmission method and device for carrying out the method - The invention relates to the technical field of data transmission via a transmission link according to the TDM method, corresponding to time division multiplex. Such a method is used in an audio mixing console in order to transport the sample words of a plurality of audio channels jointly to an audio DSP processor and, after processing, to transmit them back from said processor to an output processor. Since the data output process is performed in an automated manner with the aid of a DMA unit, severe interfering noise can occur in cases of error, said noise also being output via the loudspeakers. The invention is based on the aim of avoiding such interfering effects. An error detection method based on the marking of data frames is used for this. For this purpose, a number of marking bits of the time slot of the data frame are set, the bit pattern of the marking bits being alternated in a defined sequence. Upon error detection, the outputting of the data via the loudspeakers is prevented, such that no interfering noise arises. | 2009-12-31 |
20090323726 | Signal Transmission Apparatus - A signal transmission apparatus is connected to a network as one node among a plurality of nodes involved in the network which is provided with an audio signal transmission period for transmitting a plurality of channels of audio signals each transmission cycle and a control data transmission period for transmitting control data of the plurality of the nodes each control cycle by using an idle time period other than the audio signal transmission period. In the signal transmission apparatus, a storage section stores configuration information of the one node. A transmitting section transmits the control data including an error checking code of the configuration information. A receiving section receives request data from another node, the request data requesting the one node for transmission of an information block of the configuration information. A control section controls the transmitting section to transmit the information block in response to the request data. | 2009-12-31 |
20090323727 | SYSTEMS AND METHODS FOR SYNCHRONOUS GENERIC FRAMING PROTOCOL MAPPING - The present invention provides systems and methods for mapping synchronous input signals, such as synchronous Ethernet, into Generic Framing Protocol (GFP) frames for using GFP directly on Optical Transport Network (OTN) while preserving the synchronous timing of the input signals. The present invention defines a mapping technique for GFP-based encapsulation that preserves timing information of an incoming client signal. The mapping technique makes use of the concept that a timing signal can be fractionally multiplied in frequency using factors that are ratios of integers without creating significant timing impairments. | 2009-12-31 |
20090323728 | ASYNCHRONOUS DATA FIFO THAT PROVIDES UNINTERRUPTED DATA FLOW - An asynchronous FIFO is provided that determines whether its buffer is primed with at least one data element during a data transfer across clock domains in order to eliminate metastability issues that cause data stalls and interruptions in data flow. | 2009-12-31 |
20090323729 | APPARATUS, SYSTEMS, METHODS AND COMPUTER PROGRAM PRODUCTS FOR PRODUCING A SINGLE FREQUENCY NETWORK FOR ATSC MOBILE / HANDHELD SERVICES - Producing coherent symbols from a plurality of digital RF transmitters is achieved by selecting data bytes corresponding to mobile-handheld encapsulation (MHE) packets and setting trellis coders to a predetermined state when a predetermined number of bits of the data bytes enter a corresponding trellis coder. | 2009-12-31 |
20090323730 | DATA ALIGNMENT SYSTEM AND METHOD FOR DOUBLE DATA RATE INPUT DATA STREAM - Methods and apparatus are provided for a system for aligning data. The apparatus comprises a demultiplexing component adapted to bifurcate a DDR data stream into first and second SDR data streams, a sequence detection component coupled to the demultiplexing component and adapted to detect a pattern of sequential bit values in the first SDR data stream, and a data alignment component coupled to the demultiplexing component and to the sequence detection component, the data alignment component adapted to place the second SDR data stream in alignment with the pattern of sequential bit values in the first SDR data stream. | 2009-12-31 |
20090323731 | LOW POWER DESERIALIZER AND DEMULTIPLEXING METHOD - A deserializer circuit and method convert a serial bit stream into a parallel bit stream according to a parallel grouping. The deserializer and method include alternatingly demultiplexing a serial data stream into first and second bit streams. The first and second bit streams are respectively serially shifted along a first plurality of shift registers and a second plurality of shift registers. A first portion of the first bit stream in the first plurality of shift registers is selected and a second portion of the second bit stream in the second plurality of shift registers is also selected. A parallel group of data in a parallel data stream is formed from the first and second portions. | 2009-12-31 |
20090323732 | Optical Wave Generator - An optical wave generator comprising a first-level Raman sideband generator (RSBG). The first-level RSBG comprises a first hollow-core photonic crystal fibre HCPCF ( | 2009-12-31 |
20090323733 | Blue laser and light cure polymers - Portable, battery charged, compact, laser instrument is presented for polymerizing light cure polymer that is used in civil engineering, aerospace engineering, medical and dental. Blue laser beam with wave length of 473 nm generated from semiconductor laser diode. | 2009-12-31 |
20090323734 | NOT TEMPERATURE STABILIZED PULSED LASER DIODE AND ALL FIBRE POWER AMPLIFIER - So as to establish laser light with a desired characteristic downstream a laser light source ( | 2009-12-31 |
20090323735 | Pulse stretching optical fiber and related systems and methods - An optical fiber for performing pulse stretching, and fiber laser systems and methods using the pulse-stretching fiber are disclosed. The pulse-stretching (PS) fiber has low fourth-order dispersion (dispersion curvature) and a third order dispersion (dispersion slope) with a small negative, nearly zero or small positive value. Two different types of fiber laser systems that use the PS fiber in a manner that achieves optimum performance are described. The PS fiber enables an all-fiber (up to the final pulse compressor) ultra-short pulsed laser systems reaching pulse energies exceeding 100 μJ, average powers exceeding 100 W, and output pulse widths of less than 100 fs. | 2009-12-31 |
20090323736 | High brightness laser module - A powerful high-brightness laser pump modules is configured with a plurality of spaced laser diodes each generating a light beam at a pump wavelength, and respective groups of optical components guiding the light beams along parallel light paths. The groups of the optical components each include a lens assembly and a bending mirror configured to couple the beam light into an output fiber which is common to all groups of the optical component. At least one optical component of each group is provided with a dielectric layer capable of preventing propagation of a backreflected light toward laser diodes at a wavelength different from the pump wavelength. | 2009-12-31 |
20090323737 | System and devices for improving external cavity diode lasers using wavelength and mode sensors and compact optical paths - External cavity laser (ECL) systems and methods for measuring the wavelength of the ECL by using a portion of the positional light received by the position sensitive detector (PSD) to determine the position of a wavelength tuning element (such as a diffraction grating or an etalon), for determining the longitudinal laser mode or power output of the laser from a portion of the laser light received by a beam-shearing mode sensor, and by using a non-output beam(s) from a transmissive diffraction grating in the ECL to monitor the external cavity laser. | 2009-12-31 |
20090323738 | SYSTEMS AND METHODS FOR GENERATING A TUNABLE LASER BEAM - Systems and methods of generating a tunable laser beam are disclosed. An example method includes: generating coherent optical beams from a plurality of semiconductor optical amplifiers (SOAs); combining the coherent optical beams into a combined coherent optical beam; and tuning the combined beam to a selected frequency range to output a coherent optical beam having only the selected frequency range. In some embodiments, the SOAs are arranged in parallel within a resonant cavity, and each coherent optical beam has a different center wavelength that overlaps in bandwidth with another one of the coherent optical beams. | 2009-12-31 |
20090323739 | LASER OPTICAL SYSTEM - A compact optical system is provided for delivering laser radiation with high optical efficiency and uniformity. The optical system includes, in order of the propagation of light, an expander for producing a collimated beam, a beam shaper including a flat window with a diffraction pattern on one side for transforming the collimated beam into a square top-hat output beam, a corrector for bending the square top-hat output beam back to a system axis, a scan head to scan the square top-hat output beam across the substrate, and a scan lens to image the beam at the substrate plane. | 2009-12-31 |
20090323740 | Systems And Methods For Control Of Ultra Short Pulse Amplification - A method of controlling an ultra-short pulse system is described comprising controlling an optical power within the ultra-short pulse system and control-system controlling a width of an optical pulse. In some embodiments, the method also comprises tuning a compressor by controlling a number of passes of the optical pulse through a Bragg grating to control the width of the optical pulse output from the compressor. In other embodiments, the method may comprise tuning a multi-pass stretcher by controlling a number of passes of the optical pulse through a loop of the multi-pass stretcher to control the width of the optical pulse output from the multi-pass stretcher. A method of controlling an ultra-short pulse system may also comprise accessing a control system from a remotely located command station, communicating status information from the control system to the command station, and communicating information from the command station to the control system. | 2009-12-31 |
20090323741 | DIGITAL LASER PULSE SHAPING MODULE AND SYSTEM - A digital pulse shaping module for controlling a pulsed laser oscillator according to a digital input waveform is provided. The pulse shaping module includes a clock generator generating a plurality of phase-related clock signals and a shape generator which outputs a digital shape signal corresponding to the digital input waveform in Double Data Rate in response to the clock signals. A DAC converts the digital shape into an analog shape signal. The analog shape signal may be used to control the current source of a laser seed source or modulators in the laser oscillator shaping a seed light signal. Optionally, the pulse shaping module may also output a gate control signal having a predetermined timing relationship with respect to the digital shape signal. | 2009-12-31 |
20090323742 | LASER LIGHT SOURCE APPARATUS - A laser light source apparatus includes a laser light source; a heat exchanger that includes a plurality of cooling fins and that cools the laser light source; a driving circuit that drives the laser light source; a housing including an intake port and an exhaust port; and an air-cooling fan that is attached to the housing and that discharges air taken in from the intake port to the exhaust port. The cooling fins are arranged at a position opposed to the intake port to be stacked up on each other at predetermined intervals and a pitch between the cooling fins is equal to or less than a minimum width of the intake port. | 2009-12-31 |
20090323743 | High-Power, High-Throughput Microwave Discharge Singlet Oxygen Generator for Advanced Electrical Oxygen-Iodine Lasers - A laser device includes an optical resonator, a microwave driven discharge device, and a source for a second gas. The microwave driven discharge device is disposed relative to the optical resonator. The microwave driven discharge device operates at a discharge power and gas flow rate to produce a selected amount of energetic singlet oxygen metastables flowing in the direction of the optical resonator. The second source for the second gas is disposed between the optical resonator and the microwave driven discharge device. The second gas reacts with the selected amount of energetic singlet oxygen metastables to form an excited species in an amount sufficient to support lasing of the excited species in the optical resonator. | 2009-12-31 |
20090323744 | CIRCUIT AND METHOD FOR DRIVING LIGHT-EMITTING ELEMENT AND OPTICAL TRANSMITTER - A circuit for driving a light-emitting element such as a laser diode LD has a boost circuit for boosting an input voltage to supply it to the light-emitting element, a photoreceptor such as a photodiode PD for monitoring light from the light-emitting element; and a boost control circuit for controlling a boost voltage of the boost circuit based on a monitored amount of the photoreceptor. In the method for driving a light-emitting element by boosting an input voltage to supply the voltage to the light-emitting element, light from the light-emitting element is monitored and its monitored amount is used as a basis to control a boost voltage to the light-emitting element. A control circuit may be provided to control a driving current that passes through the light-emitting element based on the monitored amount of the photoreceptor. | 2009-12-31 |
20090323745 | SEMICONDUCTOR LASER DRIVING CIRCUIT, LIGHT EMITTING DEVICE, AND DISK DRIVE - A semiconductor laser driving circuit has a circuit protection function at low temperature and includes a voltage current converter that converts an input voltage Vin, which is determined according to a desired light brightness of the semiconductor laser to be driven, into a current. A current limiter limits an output current of the voltage current converter to a specified current value or less. An output amplifier amplifies the output current of the voltage current converter and supplies the amplified current as a drive current to the semiconductor laser. A temperature detection circuit detects a low temperature state and, in the low temperature state, decreases the specified current value of the current limiter. | 2009-12-31 |
20090323746 | Nitride Semiconductor Laser and Method for Fabricating Same - In one embodiment of the present invention, in a method of fabricating a nitride semiconductor laser device, after an insulating film is formed on a layered nitride semiconductor portion on a substrate, a resist mask is formed on the insulating film, such that the insulating film is exposed near a position where an exit-side cleaved facet and a reflection-side cleaved facet are formed. The insulating film near a position where the exit-side cleaved facet and the reflection-side cleaved facet are formed is then removed, and, after the resist mask is removed, cleavage is performed. As a result, even if the substrate and the layered nitride semiconductor portion are cleaved at a position where the exit-side cleaved facet and the reflection-side cleaved facet are formed, the insulating film is not broken. This helps prevent fragments produced from the insulating film from being adhered to the exit-side cleaved facet and to the reflection-side cleaved facet. | 2009-12-31 |
20090323747 | ORGANIC SOLID-STATE DYE LASER - An organic solid-state dye laser ( | 2009-12-31 |
20090323748 | Photoelectric conversion device, photoelectric conversion module and method of manufacturing photoelectric conversion device - A photoelectric conversion device includes a circuit substrate that has a first concave portion having a light transmission hole, a first metal interconnection that is formed from a bottom of the first concave portion to a face of the circuit substrate where the first concave portion is formed, an optical element that is arranged in the first concave portion so that an optical axis thereof passes through the light transmission hole and is flip-chip bonded to the first metal interconnection on the bottom of the first concave portion, and a circuit chip that is a driver circuit chip for driving the optical element or an amplifier circuit chip for amplifying a signal from the optical element and is flip-chip bonded to the first metal interconnection of the face where the first concave portion is formed. | 2009-12-31 |
20090323749 | LIGHT-EMITTING DEVICE WITH DOUBLE INTERMEDIATE LAYERS BETWEEN MESA STRIPE AND IRON-DOPED CURRENT BLOCKING LAYER - A light-emitting device that reduces the leak current flowing along the sides of the mesa stripe is disclosed. The device provides the mesa stripe, the current blocking layer, and two intermediate layers put between the mesa stripe and the current blocking layer. One of intermediate layers has the p-type conduction and comes in directly contact with the mesa stripe, while, the other intermediate layer has the n-type conduction and put between the former intermediate layer and the current blocking layer. The double intermediate layers prevent impurities in the current blocking layer and in the mesa stripe from inter-diffusing each other. | 2009-12-31 |
20090323750 | SEMICONDUCTOR LASER DEVICE AND METHOD OF MANUFACTURING THE SAME AS WELL AS OPTICAL PICKUP - A semiconductor laser device includes a semiconductor device layer having an emission layer and formed with a current path on a semiconductor layer in the vicinity of the emission layer, a current blocking layer formed in the vicinity of the current path, and a heat-radiation layer formed to be provided at least in the vicinity of a region formed with a cavity facet of the semiconductor device layer and be located above the current path, and having thermal conductivity larger than that of the current blocking layer. | 2009-12-31 |
20090323751 | METHOD AND DEVICE FOR USING OPTICAL FEEDBACK TO OVERCOME BANDWIDTH LIMITATIONS CAUSED BY RELAXATION OSCILLATION IN VERTICAL CAVITY SURFACE EMITTING LASERS (VCSELS) - A semiconductor device is provided that includes an optical feedback structure that is monolithically integrated with a VCSEL device and which extends the speed of the VCSEL device beyond the speed to which it would otherwise be limited due to relaxation oscillation. The optical feedback structure does not rely on light emissions from the VCSEL substrate material to produce optical feedback. Consequently, extension of the bandwidth of the semiconductor device through the use of optical feedback is not limited by the absorption threshold wavelength of the substrate material. Furthermore, because the optical feedback structure does not include the substrate, the ability to use optical feedback to extend the bandwidth of the device is independent of the precision with which the substrate thickness can be controlled. | 2009-12-31 |
20090323752 | High brightness laser diode module - A high-brightness laser module is configured with a beam-compression unit capable of reducing a diameter of parallel light beams which are emitted by respective spaced apart individual laser diodes. The module further has an objective lens configured to losslessly launch the light with the reduced diameter into a fiber. | 2009-12-31 |
20090323753 | Apparatus for Inscribing Containers - An apparatus for inscribing containers may include an inscription unit. The inscription unit may include a plurality of laser light sources and a plurality of light discharge bodies. The light discharge bodies may be arranged next to one another. The laser light sources may be solid-state lasers. Each light discharge body may be connected to a respective one of the laser light sources. The light discharge bodies may be configured to direct laser light from the laser light sources onto containers to be inscribed. | 2009-12-31 |
20090323754 | AMPLIFICATION DEVICE COMPRISING A LASER AMPLIFYING MEDIUM OF PARALLELEPIPED SHAPE AND PUMPING MEANS COMPRISING LAMPS - The present invention relates to an amplification device comprising an amplifying medium ( | 2009-12-31 |
20090323755 | Optical resonator and laser light source - An optical resonator includes an optical waveguide with a core surrounded by a clad of lower refractive index. The optical waveguide includes a non-terminated ring-type optical waveguide for resonant propagation of light and an input-output optical waveguide, unitarily coupled to the ring-type optical waveguide, for output of light from the ring-type optical waveguide, or input of light to and output of light from the optical ring waveguide. The ring-type optical waveguide and input-output optical waveguide can be formed simultaneously as silicon-wire waveguides. The unitary coupling simplifies fabrication of the optical resonator. | 2009-12-31 |
20090323756 | Induction furnace for the controllable melting of powder/granular materials - An induction furnace includes a melting induction coil for inductively heating a pair of susceptors for melting particulate material falling freely in a free fall zone between the susceptors. A feeder having a rotatable hollow shaft with fingers extending therefrom breaks up the material, which falls onto a vibrating dispersion plate and then into the free fall zone. A preheating induction coil inductively heats a susceptor which radiates heat to particulate material moving over the dispersion plate. An adjustable gap between the feeder and dispersion plate controls material flow. A funnel collects falling molten material and directs it through a nozzle into a mold. Induction coils control melting within the funnel. One induction coil heats the nozzle and may be controlled to allow the nozzle to cool sufficiently to form a solid plug in the nozzle whereby molten material pools above the plug. | 2009-12-31 |
20090323757 | Method for Fabricating Thermal Effect Standards - A method for fabricating thermal effect standards includes providing an oven, placing at least one temperature sensor at measurement location in the oven, operating the oven, monitoring a temperature output of the at least one temperature sensor, providing at least one composite material specimen, placing the at least one composite material specimen at the measurement location in the oven and heat treating the at least one composite material specimen as at least one thermal effect standard by operating the oven according to the temperature output of the at least one temperature sensor. A method of determining a physical property of a composite material is also disclosed. | 2009-12-31 |
20090323758 | ANALOG-DIGITAL CONVERTER AND TEMPERATURE INFORMATION OUTPUT DEVICE HAVING THE SAME - There is provided an analog-digital converter, including: a counting control unit configured to output a counting control signal which is activated while an input voltage is discharged to a predetermined voltage; and a counting unit configured to count an input clock during an activated section of the counting control signal, and output a digital code. | 2009-12-31 |
20090323759 | Temperature measurement with reduced extraneous infrared in a processing chamber - Temperature measurement using a pyrometer in a processing chamber is described. The extraneous light received by the pyrometer is reduced. In one example, a photodetector is used to measure the intensity of light within the processing chamber at a defined wavelength. A temperature circuit is used to convert the measured light intensity to a temperature signal, and a doped optical window between a heat source and a workpiece inside processing chamber is used to absorb light at the defined wavelength directed at the workpiece from the heat source. | 2009-12-31 |
20090323760 | DEVICE FOR RECORDING THE PRESSURE AND THE TEMPERATURE IN AN INTAKE MANIFOLD OF AN INTERNAL COMBUSTION ENGINE - A device for recording the pressure and the temperature in an intake manifold of an internal combustion engine, a pressure sensor and a temperature sensor being situated in a common housing, and an evaluation of a signal of the temperature sensor being provided outside the housing. An EMC protective circuit is provided in this context, which is integrated into the housing and/or is situated on the housing, and is electrically connected to the temperature sensor. | 2009-12-31 |
20090323761 | Water temperature indicating device for bath, shower and the like - A water temperature indicating device includes a tube having a port which includes a compartment formed by a bottom wall, a housing attached to the coupler, a circuit board disposed in the housing and has a light element, a processor device is attached to the circuit board for actuating the light element, a sensing device attached to the bottom wall of the coupler for detecting a water temperature and for sending the detected water temperature to the processor device and to operate the light element, and a water operated switching device is used for actuating the processor device to operate the light element with the water flowing through the chamber of the tube. | 2009-12-31 |
20090323762 | HIGH-SPEED SPECTROGRAPHIC SENSOR FOR INTERNAL COMBUSTION ENGINES - A high-speed absorption spectrographic system employs a slit-less spectroscope to obtain high-resolution, high-speed spectrographic data of combustion gases in an internal combustion engine allowing precise measurement of gas parameters including temperature and species concentration. | 2009-12-31 |
20090323763 | Thermal Sensor Device - A thermal sensor is provided that includes a front-end component, an analog-to-digital converter and a digital backend. The front-end component including an array of current sources, a dynamic element matching (DEM) device, an analog chopper and two diodes to sense temperatures on the die. The front-end component to provide analog signals at two output nodes based on currents through the two diodes. The analog-to-digital converter to receive the analog signals from the front-end component and to provide an output signal. The digital backend to receive the output signal from the analog-to-digital converter and to provide a calculated temperature. | 2009-12-31 |
20090323764 | TEMPERATURE SENSING CIRCUIT, ON DIE THERMAL SENSOR INCLUDING THE SAME, AND METHOD FOR SENSING TEMPERATURE - A temperature sensing circuit having high accuracy and an on die thermal sensor including the same are provided. The temperature sensing circuit includes a current generating unit for generating a temperature current varied according to a temperature, and a voltage generating unit for mirroring the temperature current and generating a temperature voltage generated by the mirrored temperature current. | 2009-12-31 |
20090323765 | TEMPERATURE SENSOR - In a temperature sensor ( | 2009-12-31 |
20090323766 | METHOD AND DEVICE OF PEAK DETECTION IN PREAMBLE SYNCHRONIZATION FOR DIRECT SEQUENCE SPREAD SPECTRUM COMMUNICATION - A spread-spectrum preamble synchronization peak detection system performs multiple statistical tests based on instant and time-averaged channel condition measurements to identify the synchronization peak. In a normalized peak-to-average test, a peak-to-average ratio measurement is normalized by a signal-to-noise ratio measurement to form a new statistical measure which effectively eliminates the impact of the wide dynamic range of the signal-to-noise ratio of the received samples. A transition SNR test is used to eliminate potential false alarms caused by spurious PARN peaks during the transition period at the onset of preamble arrival. Code-phase aligned time-averaging is used to estimate the signal and noise levels over a sliding window. The code-phase alignment of samples effectively separates signal and noise samples in the averaging process, and resulting in more accurate signal and noise measurements. In estimating noise levels, the system takes multi-path interference into account by excluding both the peak signal and the side-lobe signals caused by multi-path wireless channels, resulting in more accurate estimation of noise level. | 2009-12-31 |
20090323767 | RADIO FREQUENCY DISTRIBUTION WITH SPREADING - A system for distributing a radio frequency (RF) signal using a data cable system includes a method and apparatus with components that receive the RF signal, determine the passband of the data cable system, spread the RF signal within the passband as a spread signal, insert the spread signal into the cable system, extract the spread signal from the data cable system as an extracted signal, convert the extracted signal to a transmission frequency as a converted signal, and transmit the converted signal. | 2009-12-31 |
20090323768 | SPREAD SPECTRUM CLOCK SIGNAL GENERATOR - A spread spectrum clock signal generator for spreading an input clock signal into an output clock signal includes a clock signal delay chain for delaying the input clock signal into a delay clock signal group having a plurality of delay clock signals, a modulation controller for outputting a counter clock signal control signal, a clock signal selection circuit for selecting, from the delay clock signal group, a modulation clock signal group having a plurality of modulation clock signals, a programmable counter for generating a counting value according to a counter clock signal, and a clock signal output unit for combining the modulation clock signals into the output clock signal according to the counting value, and further generating the counter clock signal, outputted to the programmable counter, according to the counter clock signal control signal. | 2009-12-31 |
20090323769 | SEGMENT-WISE CHANNEL EQUALIZATION BASED DATA ESTIMATION - Data is estimated of a plurality of received spread spectrum signals by a wireless communication apparatus. The plurality of received communications are received in a shared spectrum. The received communications are sampled to produce a received vector of sequential samples. The received vector is processed to produce a plurality of segments. Each segment is processed separately to estimate data of the received communications. | 2009-12-31 |
20090323770 | Techniques using a hop-by-hop approach for automatic repeat request (ARQ) in wireless relay networks - An embodiment of the present invention provides an apparatus, comprising a transceiver adapted for use in a hop by hop (HbH) relay network and configured to enable fast error correction and reduce ARQ overhead by coupling HARQ and ARQ feedback signaling in each hop of the HbH relay network. | 2009-12-31 |
20090323771 | Interactive Wireless Communication Device - One communication apparatus | 2009-12-31 |
20090323772 | WIRELESS COMMUNICATION SYSTEM - In a wireless communication system, a portable device and an in-vehicle device wirelessly communicate with each other by a spread spectrum method. The in-vehicle device transmits a synchronization signal indicative of a reference period to the portable device. The in-vehicle device performs code acquisition for only a portion of a spread wireless signal received from the portable device. The portion has a starting point in a search period from a search start point to a search end point. The search start point is identified based on the reference period and a predetermined first correction time. The search end point is identified based on the reference period and a predetermined second correction time. | 2009-12-31 |
20090323773 | METHOD AND APPARATUS FOR SIGNALING PRECODING VECTORS - Methods for signaling precoding matrices used at the Node-B for data transmission with multiple user-multiple in multiple out (MU-MIMO) wireless communications. Precoding vectors may be efficiently signaled between wireless transmit/receive units and base stations using control channels, reference signals and blind detection of the precoding information. | 2009-12-31 |
20090323774 | DATA EQUALISATION IN A COMMUNICATION RECEIVER WITH TRANSMIT AND RECEIVE DIVERSITY - A method of performing data equalization in a communication receiver with transmit and receive diversity includes (a) for each i-th receiver antenna and j-th transmitter antenna, calculating a channel response matrix H | 2009-12-31 |
20090323775 | TRANSMIT PROCESSING USING RECEIVER FUNCTIONS - A method and apparatus for transmitting data in code division multiple access communications. The method includes processing spread first data with a channel response matrix using an equalization circuit to pre-equalize the spread data to compensate for a channel response prior to transmission. The pre-equalized data is received and recovered by a receiver. Second data, transmitted from the receiver, is received and recovered using the equalization circuit to equalize the second data to compensate for a channel response that the first data encountered. | 2009-12-31 |
20090323776 | Communication System, Apparatus, And Methods - A system, method and apparatus for wireless communications are provided. In an exemplary embodiment, frequency components present in a short duration modulated complex pulse is used to represent data to be sent. In other embodiments, the complex pulse is created, modulated, then modified to have desirable frequency characteristics. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the subject matter of the disclosure contained herein. This Abstract is submitted with the explicit understanding that it will not be used to interpret or to limit the scope or the meaning of the claims. | 2009-12-31 |