| 35th week of 2011 patent applcation highlights part 24 |
| Patent application number | Title | Published |
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| 20110211563 | LOCATION TRACKING SYSTEM - This document presents a location tracking system. Transmitter tags are disposed throughout the area where the location tracking is carried out. The transmitter tags are configured to transmit their unique identifiers. A personal radio communication device being tracked detects a unique identifier received from a transmitter tag and transmits the detected unique identifier to a server. The server links a known physical location associated with the unique identifier to an identifier of the personal radio communication device so as to carry out location tracking. | 2011-09-01 |
| 20110211564 | COMMUNICATION APPARATUS - The first wireless communication unit configured to wirelessly communicate with a first wireless apparatus on a first wireless network. The beacon transmitting unit cyclically transmits a beacon signal to the first wireless apparatus via the first wireless communication unit. The period determiner determines a transmission permission period during which data transmission by the first wireless apparatus is permitted. The notification unit notifies a control signal specifying the transmission permission period to the first wireless apparatus via the beacon signal. The power managing unit performs control so that power supply to the first wireless communication unit is suspended during a suspension period, the suspend period being a period except both the transmission permission period and a transmission timing period of the beacon signal within a whole period. | 2011-09-01 |
| 20110211565 | MULTI-TIER WIRELESS HOME MESH NETWORK WITH A SECURE NETWORK DISCOVERY PROTOCOL - An apparatus, system and method for a multi-tier wireless home mesh network is described. The method may include formation of an infrastructure-less wireless home mesh networking environment comprising a collection of nodes that operate as a decentralized, ad hoc wireless network with multiple sub-networks or tiers that are responsible for different functions within the network. Each node of the multi-tier network is configured to forward data to other nodes and is assigned to a particular tier based on the node's performance capabilities. A further embodiment includes identification of a wireless home mesh network. Once identified, one or more proprietary messages may be exchanged in a secure manner to establish connections with a home electronics device as either a mobile node or a stationary node of the home network. A home electronics device may wirelessly communicate to route data within one or more nodes of the wireless home mesh network. Other embodiments are described and claimed. | 2011-09-01 |
| 20110211566 | MULTI-TIER WIRELESS HOME MESH NETWORK WITH A SECURE NETWORK DISCOVERY PROTOCOL - An apparatus and method for a multi-tier wireless home mesh network is described. The method may include formation of an infrastructure-less wireless home mesh networking environment comprising a collection of nodes that operate as a decentralized, ad hoc wireless network with multiple sub-networks or tiers that are responsible for different functions within the network. Each node of the multi-tier network is configured to forward data to other nodes and is assigned to a particular tier based on the node's performance capabilities. A further embodiment includes identification of a wireless home mesh network. Once identified, one or more proprietary messages may be exchanged in a secure manner to establish connections with a home electronics device as either a mobile node or a stationary node of the home network. A home electronics device may wirelessly communicate to route data within one or more nodes of the wireless home mesh network. Other embodiments are described and claimed. | 2011-09-01 |
| 20110211567 | Method, System, and Device for Network Selection - A method, system, and device for network selection are provided. The method for network selection includes the following steps. After network selection is triggered, a network selection list stored in a Universal Integrated Circuit Card (UICC) and a network selection list stored in a Mobile Equipment (ME) are read, where the UICC is embedded in the ME and accessible to the ME. Network selection is performed according to the network selection list stored in the UICC and the network selection list stored in the ME. Also, a method for network selection through a network selection policy is added and methods for implementing a type and a data structure of a network selection policy as well as a method for network selection based on a network selection policy are provided, so that network selection can be controlled more flexibly, a terminal can locate a target network faster, and time consumed for the network selection is reduced. | 2011-09-01 |
| 20110211568 | BASE STATION - A base station includes a wireless communication interface configured to perform wireless communication with a mobile station being under control of the base station; and a processor configured to control the wireless communication interface to perform wireless communication with the mobile station being under control of the base station by making use of such subchannels which not only have different combinations of subcarriers when compared to any subchannel in a first subchannel group that is used by an adjacently-installed adjacent base station that performs wireless communication with a mobile station being under control thereof, but also include same subcarriers as subcarriers assigned to any one of subchannels in the first subchannel group. | 2011-09-01 |
| 20110211569 | METHOD, APPARATUSES AND COMPUTER PROGRAM PRODUCTS FOR TRANSMISSION DIVERSITY - The invention is related to an apparatus comprising: a grouper configured to group antennas into antenna groups, if more antennas suitable for transmission are provided than pilot resources per a time slot; a rotator configured to rotate selected symbols with antenna-specific or antenna group-specific, and/or data symbol-specific phases; a transmitter configured to transmit symbols using a first antenna or antenna group of a user device and the rotated symbols using at least one second antenna or antenna group of the user device. | 2011-09-01 |
| 20110211570 | SYNCHRONIZATION OF NETWORK DEVICES - A synchronized communication protocol based on time slots is used for wireless data transmission. Synchronization data are received for each network device by an additional receiver which has a lower energy requirement in comparison with the transmitting and/or receiving unit. To specify an energy-efficient and, at the same time, robust solution to the synchronization, at least two bits are used for each synchronization signal, as a result of which the synchronization signals can be distinguished from, e.g., interferences or the susceptibility to interference can at least be distinctly reduced. | 2011-09-01 |
| 20110211571 | UPLINK SYNCHRONIZATION IN MULTIPLE CARRIER SYSTEM - A method and apparatus of uplink synchronization in a multiple carrier system is provided. After establishing Uplink synchronization for a primary carrier, a secondary carrier based on activation information via the primary carrier is activated. A periodic ranging via the secondary carrier is performed to adjust uplink synchronization for the secondary carrier. | 2011-09-01 |
| 20110211572 | CALLER ID CALLBACK AUTHENTICATIONI FOR VOICE OVER INTERNET PROTOCOL ("VOIP") DEPLOYMENTS - Systems and methods are disclosed for authenticating caller identification in VoIP communication. A VoIP device receives an incoming call from an originating calling device; wherein the incoming call includes (1) a caller identification and (2) a unique identifier associated with the originating calling device. The VoIP device verifies that the caller identification in the received incoming call matches an entry in a trusted directory, wherein the trusted directory includes one or more entries of previously verified caller identifications. Upon verifying that the caller identification in the received incoming call matches a caller identification entry in the trusted directory, the VoIP device sends an inquiry to a unique locator associated with the matching caller identification in the trusted directory. | 2011-09-01 |
| 20110211573 | INTEGRATED CIRCUITS, SYSTEMS, APPARATUS, PACKETS AND PROCESSES UTILIZING PATH DIVERSITY FOR MEDIA OVER PACKET APPLICATIONS - In one form of the invention, a process of sending real-time information from a sender computer ( | 2011-09-01 |
| 20110211574 | METHOD, SYSTEM AND APPARATUS FOR SESSION ASSOCIATION - A session association method, system, and apparatus are disclosed. The method includes: receiving an Internet Protocol Connectivity Access Network (IP-CAN) session setup message and a gateway control session message; and associating an IP-CAN session with a gateway control session according to a temporary identity (ID) in the IP-CAN session setup message and the temporary ID in the gateway control session message. Therefore, the gateway control session is associated with the IP-CAN session by using a temporary ID; and the gateway control session is associated with the IP-CAN session when no user ID exists in the emergency service, which ensures the normal progress of the emergency service. | 2011-09-01 |
| 20110211575 | METHOD AND APPARATUS FOR CONTROLLING TELECOMMUNICATION SERVICES - Method and apparatus in a user terminal ( | 2011-09-01 |
| 20110211576 | SOURCE SPECIFIC TRANSCODING MULTICAST - In an example embodiment, there is described herein an apparatus comprising an upstream communication interface configured to receive a multicast stream from a source encoded by a first codec, a downstream communication interface, and routing and transcoding logic coupled to the upstream communication interface and downstream communication interface. The routing and transcoding logic is configured to forward the multicast stream encoded by the first codec unchanged to a first downstream subscriber of the multicast stream. The routing and transcoding logic is configured to replicate the multicast steam and transcode the multicast stream to a second codec for a second downstream subscriber, the replicated, transcoded multicast stream is forwarded to the second downstream subscriber. | 2011-09-01 |
| 20110211577 | DATA PACKET FORWARDING METHOD AND NETWORK DEVICE USING SUCH METHOD IN NETWORK ADDRESS TRANSLATION MODE - A data packet forwarding method and a network device using such a method in a network address translation mode are provided. The network device includes a central processing unit and a switch chip. The switch chip includes at least a wide area network port and plural local area network ports. The multicast packet is directly forwarded from said wide area network port to corresponding local area network ports. Since the central processing unit is not included in the forwarding path of the multicast packet, the speed of forwarding the multicast packet is enhanced. | 2011-09-01 |
| 20110211578 | Bidirectional Multicast Protocol with Upstream and Downstream Join Messages - Systems and methods for implementing a bidirectional multicast protocol with two types of join messages are disclosed. The two types of join messages, upstream joins and downstream joins, are used to control the Reverse Path Forwarding (RPF) interface is added to the outgoing interface list for a particular multicast group, which in turn controls when multicast packets will be forwarded to the rendezvous point. One method involves receiving a multicast packet addressed to multicast group G. The method inhibits the multicast packet from being forwarded via the RPF interface, unless the outgoing interface list corresponding to the multicast group G already identifies the RPF interface. The RPF interface can be added to the outgoing interface list in response to reception of a downstream join message via the RPF interface, as well as in response to monitoring, via the RPF interface, an upstream join message on a shared network segment. | 2011-09-01 |
| 20110211579 | METHOD, SYSTEM AND NETWORK NODE FOR SETTING UP A LABEL SWITCHING PATH - The present invention relates to communications technologies and discloses a method, a system, and a label switching router for setting up a Label Switching Path (LSP). The method includes: an ingress edge node sends a label request packet to a downstream node, where the label request packet carries an Equal Cost Multi-Path (ECMP) property flag of a Forwarding Equivalence Class (FEC); the downstream node that receives the label request packet sends the label request packet to a next-hop node according to the property flag; and the node that receives the label request packet performs label mapping according to a path of the label request packet, binds a label to the FEC, and sets up an LSP. An ECMP property flag indicating setting up an ECMP route is permitted is introduced in the process of setting up an LSP. Therefore, setup of an ECMP route is prevented for the FEC that imposes special requirements, and management and maintenance of the network are facilitated. | 2011-09-01 |
| 20110211580 | COMMUNICATION APPARATUS, COMMUNICATION APPARATUS CONTROLLING METHOD, AND NETWORK SYSTEM - A terminal connected to a network stores association information between a physical address and a logical address of the terminal as first association information in an address association information storing unit. The terminal obtains association information between a physical address and a logical address, which is transmitted to the terminal via the network, as second association information. The terminal determines, based on the first association information stored in the storing unit and the second association information, whether or not the logical address included in the first association information is duplicate. If the logical address is determined to be duplicate, the first association information is notified to a device belonging to the network to which the terminal belongs, and the device is instructed to resolve duplication of the logical address. | 2011-09-01 |
| 20110211581 | TRANSLATOR FOR IP NETWORKS, NETWORK SYSTEM USING THE TRANSLATOR, AND IP NETWORK COUPLING METHOD THEREFOR - A translator for coupling a first IPv4 network and a second IPv6 network having different addressing architectures for IP addresses so as not to exhaust the IP addresses of one of the two networks, a network system using the translator, and a network coupling method. When a packet is transferred from the IPv6 network to the IPv4 network, the translator assigns any of previously prepared IPv4 addresses to an IPv6 address stored in a source storing field of the IPv6 packet. The assigned address is stored in a source storing field of an IPv4 packet. A packet translation unit assigns the foregoing IPv6 address to an IPv4 address stored in a destination storing field of the IPv4 packet, when a packet is transferred from the IPv4 network to the IPv6 network, and stores this address in a destination storing field of the IPv6 packet. | 2011-09-01 |
| 20110211582 | Interconnects using Self-timed Time-Division Multiplexed Bus - A method of sending signals, including data and timing information, between transportation units on a communication bus of an integrated circuit, by generating clock triggers for every transportation unit on the bus, thereby initiating each preceding one of the transportation units to start sending the signals in a wave-front to an adjacent succeeding one of the transportation units, where the wave-front is initiated at each of the transportation units at a common point in time, and every transportation unit applying a timing adjustment to at least one of the data and timing information that it receives in the signals from the preceding transportation unit, to at least one of (1) capture the data from the preceding transportation unit, (2) relay the data without modification from the preceding transportation unit to the succeeding transportation unit on the communication bus, and (3) load new data to the communication bus, with updated timing information in a succeeding wave-front. | 2011-09-01 |
| 20110211583 | APPARATUS, METHOD, MANUFACTURE, AND SYSTEM FOR PROVIDING NETWORK SERVICES FROM BUILDING BLOCKS - A method and apparatus for communicating over a network is provided. The method includes obtaining building block codes, where the building blocks codes are capable of being used together to provide an end-to-end service. The building block codes are sent to each appropriate building block controller, where each building block controller is associated with a corresponding network node. Upon receiving a first packet of a connection for the first end-to-end service, a determination as to which network nodes of the plurality of network nodes should be used as network hops for the connection, and as to, for each network node that should be used as a network hop for the connection, which building block codes should be used by the building block controller corresponding to the network node. These determinations are communicated to each of the appropriate building block controllers. | 2011-09-01 |
| 20110211584 | Smart Home Hub - The present invention provides a method and device for an integrated smart hub. The method and device for an integrated smart hub provides for a simultaneously multicasting of a plurality of functions with a simple and an easy process to operate the device. The integrated device utility includes applications in the areas of telephony, data processing, content storage, multimedia, augmentative communications, personal computing, home or facility security and automation. The integrated smart hub system incorporates integrated components and functions including a Set Top Box (STB), telephone modem, wireless modems, Optical Network Terminal (ONT), Very-high-speed Digital Subscriber Line (VDSL), data server, video server, solid-state storage, game server, an Internet Protocol (IP) intelligent gateway router, and a plurality of microprocessors. | 2011-09-01 |
| 20110211585 | PACKET RELAY DEVICE - A packet relay device determines a port to be placed on standby in a link aggregation, determines whether there is an active port among ports belonging to redundant network interfaces, and, if a network interface has no active port, places the network interface on standby. The packet relay device monitors whether a failure has occurred in an active network interface and, if a failure is detected, activates a standby network interface and places the failed network interface on standby. | 2011-09-01 |
| 20110211586 | METHOD, MEDIA GATEWAY AND SYSTEM FOR MANAGING A FILTER RULE - A method, a Media Gateway (MG), and a system for managing a filter rule are disclosed. The method includes: The MG receives a processing message from a Media Gateway Controller (MGC); and the MG maintains the packet filter rule context according to the processing message, where the packet filter rule context includes at least one filter rule for filtering a packet received or sent by the MG. The processing message may be a message for creating, modifying or deleting the packet filter rule context. With the present disclosure, the MGC can manage the packet filter rule on the MG effectively. | 2011-09-01 |
| 20110211587 | Packet Relaying Device, Packet Relaying Method And Program - A packet relaying device, wherein a reception processing unit judges an interface used to receive an IP packet from a network, and records a reception interface identifier (RID) which is information for identifying the interface, in a packet transmission/reception management table, a route control unit records, in the packet transmission/reception management table, a transmission interface identifier (SID) which is information for identifying the transmission interface obtained by selection of a transmission path and the above described reception interface identifier (RID), in such a manner that the identifies are associated with each other. A transmission processing unit makes a comparison between the reception interface identifier (RID) and the transmission interface identifier (SID) recorded in the packet transmission/reception management table, and when the both identifiers are the interface identifier of the same virtual network interface, the transmission processing unit discards the IP packet to invalidate the transmission process. | 2011-09-01 |
| 20110211588 | GATEWAY WITH HTTP PROCESSING - Embodiments of the present invention relate to an apparatus and method for providing an end user of a network terminal in a local network with an access link to an external network. According to an embodiment of the present invention, a network node further includes a control unit arranged to transmit a local hypertext transfer protocol (HTTP) response including detailed information to at least one network terminal in said local network using an earlier original HTTP request towards said external network made by said at least one network terminal in the local network. | 2011-09-01 |
| 20110211589 | METHOD FOR MAPPING RESOURCE UNITS - A method for mapping resource units is disclosed. The method includes: dividing the physical resource unit set to obtain a first physical resource unit set which is in a unit of N1 continuous physical resource units, and a second physical resource unit set into which the remaining physical resource units are put; permuting, in a unit of N2 continuous physical resource units, the physical resource units in the second physical resource unit set; allocating, in a unit of N1 continuous physical resource units, the physical resource units in the first physical resource unit set to each frequency partition, and allocating, in a unit of one physical resource unit, the permuted physical resource units in the second physical resource unit set to each frequency partition. By using the invention, the combination of external mapping under the two-level sub-carrier mapping manner in the partial frequency multiplexing with the localized mapping and the distributed mapping can be realized. | 2011-09-01 |
| 20110211590 | Presenting messages through a channel of a non-communication productivity application interface - A computationally implemented method includes, but is not limited to: providing at least to one or more associated end users from a group of associated end users a non-communication (NC) productivity application interface including a channel for accessing messages; and presenting to the one or more associated end users, via the channel, at least a first one or more messages and a second one or more messages, the first one or more messages being associated with the group of associated end users and the second one or more messages being independent of the group of associated end users. In addition to the foregoing, other method aspects are described in the claims, drawings, and text forming a part of the present disclosure. | 2011-09-01 |
| 20110211591 | REASSEMBLY OF MINI-PACKETS IN A BUFFER - A system comprises a processor, a reassembly buffer that receives mini-packets, and at least one data structure that comprises bits. The bits indicate the presence or absence of each of the mini-packets in the reassembly buffer and further indicate whether one of the mini-packets is a final mini-packet in a series of the mini-packets. The processor uses the bits to determine whether all mini-packets forming the series are present in the reassembly buffer. As a result of the determination, the processor causes the series to be read from the reassembly buffer. | 2011-09-01 |
| 20110211592 | METHOD AND APPARATUS FOR BINDING REDUNDANCY VERSIONS WITH A SYSTEM FRAME NUMBER AND SUBFRAME NUMBERS - A method and apparatus for binding Redundancy Versions (RVs) with a System Frame Number (SFN) and subframe numbers are disclosed. The method includes: choosing any 5 continuous subframes within a transmission window of a System Information (SI-x) message according to the subframe numbers of an SFN, and binding the SFN and subframe numbers of the 5 continuous subframes with RVs of the SI-x message. Because RVs are bound with an SFN and subframe numbers, when a transmission window of an SI-x message is longer than or equal to 5 ms, system frames and subframes are bound with RVs of the SI-x message so that the RV retransmission of the SI-x message is guaranteed. | 2011-09-01 |
| 20110211593 | Capturing Packets With Parallel Capture Engines - There is disclosed a method of capturing packets and packet receivers to capture packets. A plurality of packets may be received form a network. A timestamp may be attached to each received packet. The timestamped received packet may be distributed among a plurality of capture engines. Each of the plurality of capture engines may store, in a respective capture memory of a plurality of capture memories, at least some timestamped received packets determined to match one or more of a plurality of predetermined capture criteria. A list in timestamp order of contiguous packets stored in the plurality of capture memories may be prepared. | 2011-09-01 |
| 20110211594 | TRAINING SEQUENCES FOR VERY HIGH THROUGHPUT WIRELESS COMMUNICATION - Methods and systems for communications that generate a plurality of spatial streams, wherein each of the spatial streams comprises a data packet with a training sequence; and multiply at least a portion of the training sequence in each of the spatial streams with a different spreading sequence. Methods and systems that receive a plurality of spatial streams, wherein each of the spatial streams comprises a data packet with a training sequence; multiply at least a portion of the training sequence in each of the spatial streams with a different spreading sequence; and decode the plurality of spatial streams based on the different spreading sequences. | 2011-09-01 |
| 20110211595 | METHOD AND APPARATUS TO FACILITATE AN EARLY DECODING OF SIGNALS IN RELAY BACKHAUL LINKS - Methods, apparatuses, and computer program products are disclosed that facilitate an early decoding of relay signals. A relay receives a signal within a sub-frame from a network. A first and second reference symbol is detected within the sub-frame such that the first reference symbol is detected before the second reference symbol. The signal is then decode based on the first reference symbol. | 2011-09-01 |
| 20110211596 | SYSTEMS AND METHODS FOR SYNCHRONIZING FILTER RECORDS - Systems and methods for synchronizing filter records between a mobile device and a network node are described herein. Upon detection of a precedence contention when installing filters at the network node, a synchronization command can be initiated to synchronize the filter records between the mobile device and the network node. | 2011-09-01 |
| 20110211597 | Network synchronization system and information processing device - In a network synchronization system including plural information processing devices, a first information processing device includes a synchronization-use common storage unit configured to copy and store first information for each user authorized to use the first information processing device, so that the first information can be shared with another information processing device; and a second information processing device includes a setting information unit configured to store second information for each user authorized to use the second information processing device, and a synchronization control unit configured to compare the second information with the first information, and to update the second information to latest information based on a result of the comparison. The synchronization control unit acquires common update information common to the information processing devices, which is stored in the synchronization-use common storage unit. | 2011-09-01 |
| 20110211598 | Fiber-Based Ultrafast Laser - An ultrafast laser system includes a seed laser that provides a signal laser pulse and a fiber-based first chirped reflective Bragg grating that reflects the signal laser pulse propagating along a first path and produce a stretched laser pulse longer than the signal laser pulse. A grating frequency of the first chirped reflective Bragg grating varies along the first path. An amplifier can amplify the stretched laser pulse and output an amplified laser pulse. A second chirped reflective Bragg grating can reflect the amplified laser pulse and produce a compressed laser pulse shorter than the amplified laser pulse. The amplified laser pulse propagates along a second path in the second chirped reflective Bragg grating. A grating frequency of the second chirped reflective Bragg grating varies in an opposite direction along the second path as the grating frequency of the first chirped reflective Bragg grating varies along the first path. | 2011-09-01 |
| 20110211599 | THERMAL CONTROL OF OPTICAL FILTER WITH LOCAL SILICON FRAME - Briefly, in accordance with one or more embodiments, a thermally controlled optical filter comprises a frame coupled to an etalon where the frame includes a resistive thermal device disposed on the frame to obtain thermal measurements of the etalon during operation. The frame may be generally L-shaped or generally square-shaped. The frame may include a fillet that is generally planar, generally beveled or trapezoidal, or generally circular in shape. A heater may be additionally disposed on the frame. The etalon and frame subassembly may be bonded to a micro hot plate that is capable of heating the etalon to an operational temperature. | 2011-09-01 |
| 20110211600 | LASER SYSTEM FOR OUTPUT MANIPULATION - A laser system capable of phase and/or amplitude manipulation of the output pulses is provided. In another aspect, a laser system includes a self-referenced pulse characterization method. A further aspect uses spectral amplitude modulation to isolate spectral bands by scanning one or more transmission slits or openings, and measuring and/or calculating the first derivative of a phase (group delay) across an entire spectrum. A single-beam pulse shaper-based technique for spectrometer-free measurement and compensation of laser pulse phase distortions is also provided in an additional aspect. | 2011-09-01 |
| 20110211601 | DRIVER LASER FOR EXTREME ULTRA VIOLET LIGHT SOURCE DEVICE - A driver laser for an extreme ultra violet light source device capable of suppressing self-oscillation light, amplifying a laser beam efficiently, and reducing a device size. The driver laser has an oscillator for generating a laser beam to output the generated laser beam, and at least one amplifier for amplifying the laser beam output from the oscillator to output the amplified laser beam. The amplifier includes a discharge unit which amplifies the laser beam by using energy of a laser medium excited by discharge, a feedback mirror which leads the laser beam output from the discharge unit to the discharge unit, a polarizer which leads the laser beam output from the oscillator into the discharge unit and also reflects the laser beam output from the discharge unit to a predetermined direction, and a self-oscillation light filter which attenuates self-oscillation light output from the discharge unit. | 2011-09-01 |
| 20110211602 | Semiconductor Laser Using External Resonator - A semiconductor laser using an external resonator. A laser diode chip emits a laser beam in a horizontal direction parallel to the bottom plane of a package, and the travel path of the laser beam is changed into a vertical direction by a reflective mirror next to a laser beam-emitting surface of the laser diode chip. As a result, the beam arrangement of the external cavity is available on a plane parallel to the bottom plane of the package through a lens installed on the vertical travel path of the laser beam. Consequently, the beam is easily arranged. Further pore, an additional reflective mirror is installed above the lens which changes the vertical travel path into a horizontal travel path, which allows the beam traveling parallel to the bottom plane to be easily arranged through the lens. The production of the package can also be enabled in the configuration where various optical tools are arranged on the bottom of the package. Therefore, the semiconductor laser using an external cavity and having various characteristics can be easily manufactured. | 2011-09-01 |
| 20110211603 | Laser wavelength stabilization - In a coarse wavelength division multiplexing (CWDM) optical transmission system, a distributed feedback (DFB) laser is tuned so that the peak reflection of the grating overlaps with the gain range of the DFB laser. The diffraction grating is tuned so that the peak is positioned on the long wavelength end of the gain spectrum at a selected temperature. The optical transmission system operates in an environment having a wide temperature range (i.e., about −40° C. to about 85° C.). Heat is applied to the laser and as the laser temperature increases, the gain range overtakes the grating peak. When the gain range and the grating peak overlap at increased laser temperature, laser output is improved. | 2011-09-01 |
| 20110211604 | Completely Self-Adjusted Surface-Emitting Semiconductor Laser For Surface Mounting Having Optimized Properties - The present invention relates to a surface-emitting semiconductor laser having a vertical resonator, comprising a substrate base section ( | 2011-09-01 |
| 20110211605 | LOW POWER CONSUMPTION PUMP DRIVING CIRCUIT - The present patent application provides a low power consumption pump driving circuit including a laser cooling chip, a PMOS transistor, a NMOS transistor, a LC filter circuit, a laser, and a voltage sampling circuit. The pulse width modulating signal generated by the laser cooling chip and the control terminal of the PMOS transistor are connected to the gate of the PMOS transistor. The source of the PMOS transistor is connected to a power supply. The drain of the PMOS transistor is connected to the LC filter circuit. The other terminal of the LC filter circuit is connected to the anode of the laser. The cathode of the laser is connected to the drain of the NMOS transistor. The source of the NMOS transistor is connected to the ground. One terminal of the voltage sampling circuit is connected to the laser. The other terminal of the voltage sampling circuit is connected to the laser cooling chip. The circuit according to the present patent application has only two modes: the saturation active mode and the cutoff mode. When the PMOS and the NMOS are in the saturation active mode, the power consumed by the transistors is negligible. The laser is driven by a DC signal converted through the LC filter circuit, which ensures no power is wasted on the whole serial loop and achieves the requirement of low power consumption. | 2011-09-01 |
| 20110211606 | LASER DIODE DRIVE CIRCUIT AND IMAGE FORMING APPARATUS INCORPORATING SAME - A laser diode drive includes a first photo diode connection terminal to connect a first photo diode that detects light emission amounts of multiple laser diodes, multiple second photo diode connection terminals to connect multiple second photo diodes that detect light emission amounts of the respective multiple laser diodes, multiple APC controllers to control the light emission amounts of the multiple laser diodes based on monitor currents from the first photo diode or the second photo diodes, multiple switches to connect and disconnect the respective APC controllers with a monitor current path formed between the first photo diode connection terminal and the multiple APC controllers, and a detector to detect whether or not the first photo diode is connected to the first photo diode connection terminal and cause all of the switches to disconnect when the first photo diode is not connected to the first photo diode connection terminal. | 2011-09-01 |
| 20110211607 | NITRIDE SEMICONDUCTOR DEVICE - An object of the present invention is to provide a nitride semiconductor device which shifts a luminescence wavelength toward a longer wavelength side without decreasing luminescence efficiency, and the nitride semiconductor device according to an implementation of the present invention includes: a GaN layer having a (0001) plane and a plane other than the (0001) plane; and an InGaN layer which contacts the GaN layer and includes indium, and the InGaN layer has a higher indium composition ratio in a portion that contacts the plane other than the (0001) plane than in a portion that contacts the (0001) plane. | 2011-09-01 |
| 20110211608 | SEMICONDUCTOR LASER ELEMENT - A semiconductor laser element includes an active layer, an n-type carrier blocking layer arranged so as to be adjacent to the active layer and having a bandgap width that is equal to or greater than those of barrier layers, an n-type waveguide layer arranged on a side opposite to a side of the n-type carrier-blocking layer on which the active layer is arranged, so as to be adjacent to the n-type carrier blocking layer, an n-type clad layer arranged on a side opposite to a side of the n-type waveguide layer on which the active layer is arranged, so as to be adjacent to the n-type waveguide layer, and having a bandgap width that is greater than that of the n-type waveguide layer, and a p-type clad layer arranged on a side opposite to a side of the active layer on which the n-type carrier blocking layer is arranged, so as to be adjacent to the active layer, and having a bandgap width that is greater than those of the barrier layers and the n-type waveguide layer. | 2011-09-01 |
| 20110211609 | INTEGRATED SEMICONDUCTOR LASER DEVICE AND METHOD OF FABRICATING THE SAME - An integrated semiconductor laser device capable of improving the properties of a laser beam and reducing the cost for optical axis adjustment is provided. This integrated semiconductor laser device comprises a first semiconductor laser element including a first emission region and having either a projecting portion or a recess portion and a second semiconductor laser element including a second emission region and having either a recess portion or a projecting portion. Either the projecting portion or the recess portion of the first semiconductor laser element is fitted to either the recess portion or the projecting portion of the second semiconductor laser element. | 2011-09-01 |
| 20110211610 | Light emitting device and optical apparatus using the same - A light emitting device includes: a support base; a first light emitting element which is provided at one surface side of the support base and has a first substrate; and a second light emitting element which is provided between the first light emitting element and the support base and has a second substrate, which has a light emitting section as a semiconductor layer and a peripheral section other than the light emitting section at the first light emitting element side of the second substrate, and which has an embedded layer formed of a material with higher heat conductivity than the semiconductor layer in the peripheral section. | 2011-09-01 |
| 20110211611 | VOLTAGE READING TECHNIQUE FOR LARGE SENSOR ARRAYS THROUGH REDUCED NOISE DIFFERENTIAL PATH - An active sensor apparatus includes an array of sensor elements arranged in a plurality of columns and rows of sensor elements. The sensor apparatus includes a plurality of column and row thin film transistor switches for selectively activating the sensor elements, and a plurality of column and row thin film diodes for selectively accessing the sensor elements to obtain information from the sensor elements. The thin film transistor switches and thin film diodes are formed on a common substrate. | 2011-09-01 |
| 20110211612 | TEMPERATURE SENSOR ARRAY AND METHOD OF ANALYZING A CONDITION OF WATER IN A TANK OF A WATER HEATING SYSTEM - A system for determining a temperature of a medium, such as water, in a volume, such as a water heater tank. The system includes a temperature sensor array and a variable frequency voltage supply. A first temperature sensing unit of the temperature sensor array includes a temperature sensor in parallel with a capacitor. The capacitor is selected such that the impedance is low relative to the resistance of the temperature sensor at frequencies above a threshold and high at frequencies below a threshold. A second temperature sensing unit of the array includes a second temperature sensor. The temperatures sensed by the various temperature sensors in the array are determined by selectively varying the frequency of the voltage supply. | 2011-09-01 |
| 20110211613 | Thermally Decoupled Micro-Structured Reference Element for Sensors - A micro-structured reference element for use in a sensor having a substrate and a dielectric membrane. The reference element has an electrical property which changes its value on the basis of temperature. The reference element is arranged with respect to the substrate so that the reference element is (i) electrically insulated from the substrate, and (ii) thermally coupled to the substrate. The reference element is arranged on the underside of the dielectric membrane. The reference element and side walls of the substrate define a circumferential cavern therebetween, which is also bounded by the dielectric membrane, arranged between them. The dielectric membrane is connected to the substrate. A surface area of the reference element which is covered by the dielectric membrane is greater than or equal to 10% and less than or equal to 100% of the possible coverable surface area. A surface of the cavern which is covered by the dielectric membrane is greater than or equal to 50% and less than or equal to 100% of the possible coverable surface. An edge of the reference element which faces the dielectric membrane has greater than or equal to 50% and less than or equal to 100% of its extent contacted by the dielectric membrane. Sections of the side walls of the cavern which face the dielectric membrane have greater than or equal to 50% and less than or equal to 100% of the possible size contacted by the dielectric membrane. | 2011-09-01 |
| 20110211614 | Device for fixing a temperature sensor - In a system for attaching and fixing a temperature sensor, e.g., an NTC element, the NTC element is accommodated in a pressure connector section of a sensor housing. The area of the head of the temperature sensor is flanked and/or supported by guide vanes, which cause the incident flow in the area of the head of the temperature sensor to be accelerated. | 2011-09-01 |
| 20110211615 | COMMUNICATION SYSTEM AND ITS METHOD - Communication performance is to be improved in a communication system in which a plurality of wireless communication lines share space. A transmitting device | 2011-09-01 |
| 20110211616 | METHODS AND APPARATUSES FOR BEACON TRANSMISSION - Various methods and apparatuses for beacon transmission in an ad-hoc peer-to-peer network are disclosed. In one aspect, an apparatus for communication is disclosed, the apparatus comprising a processing system configured to determine device-independent beacon data, determine device-dependent beacon data, and to spread the device-dependent beacon data using one or more spreading codes anda transmitter configured to transmit one or more beacons during a beacon transmission period, wherein each beacon comprises the device-independent beacon data and the spread device-dependent beacon data. | 2011-09-01 |
| 20110211617 | METHODS AND APPARATUS FOR SIGNAL TRANSMISSION AND RECEPTION IN A BROADBAND COMMUNICATION SYSTEM - In a broadband wireless communication system, a spread spectrum signal is intentionally overlapped with an OFDM signal, in a time domain, a frequency domain, or both. The OFDM signal, which inherently has a high spectral efficiency, is used for carrying broadband data or control information. The spread spectrum signal, which is designed to have a high spread gain for overcoming severe interference, is used for facilitating system functions such as initial random access, channel probing, or short messaging. Methods and techniques are devised to ensure that the mutual interference between the overlapped signals is minimized to have insignificant impact on either signal and that both signals are detectable with expected performance by a receiver. | 2011-09-01 |
| 20110211618 | RESOURCE MANAGEMENT AND INTERFERENCE MITIGATION TECHNIQUES FOR RELAY-BASED WIRELESS NETOWORKS - Embodiments of a system and methods for resource management and interference mitigation techniques for relay-based networks are generally described herein. Other embodiments may be described and claimed. | 2011-09-01 |
| 20110211619 | PROTECTIVE RELAY AND METHOD FOR CONTROLLING THE SAME - According to one embodiment, a protective relay performs the following steps. A/D converter | 2011-09-01 |
| 20110211620 | SWITCHING BETWEEN TRANSMIT AND RECEIVE MODES IN A WIRELESS TRANSCEIVER - A wireless transceiver decodes a receive signal to extract data contained in the receive signal. A processing block contained in the wireless transceiver then initiates a power-ON of the transmit radio portions of the transceiver prior to initiating a power-OFF of the receive radio portions. The technique enables the transceiver to meet timing requirements when operating in environments that require an acknowledgement to be sent in response to receipt of data. | 2011-09-01 |
| 20110211621 | HETEROGENEOUS TRANSCEIVER ARCHITECTURE FOR WIDE RANGE PROGRAMMABILITY OF PROGRAMMABLE LOGIC DEVICES - High-speed serial data transceiver circuitry on a programmable logic device (“PLD”) includes some channels that are able to operate at data rates up to a first, relatively low maximum data rate, and other channels that are able to operate at data rates up to a second, relatively high maximum data rate. The relatively low-speed channels are served by relatively low-speed phase locked loop (“PLL”) circuitry, and have other circuit components that are typically needed for handling data that is transmitted at relatively low data rates. The relatively high-speed channels are served by relatively high-speed PLLs, and have other circuit components that are typically needed for handling data that is transmitted at relatively high data rates. | 2011-09-01 |
| 20110211622 | WIRELESS COMMUNICATION METHOD AND SYSTEM - A method providing wireless communication between a first station and a second station. The method establishes at least one communication path between at least one pair of antennas including a first antenna of the first station and a second antenna of the second station, wherein at least one of the first and second antennas is a narrow beam antenna, selects at least one part of the bandwidth available on the communication path, and transmits data between the pair of antennas over the selected part of the bandwidth. | 2011-09-01 |
| 20110211623 | METHOD AND SYSTEM FOR APPLYING DYNAMIC SPECTRAL SHAPING TO DIGITAL SUBSCRIBER LOOP COMMUNICATION SYSTEMS - Mitigation of spectral interference in communications systems such as Digital Subscriber Loop (DSL) systems, and in particular mitigation of spectral interference using dynamic spectral shaping (DSS) in DSL systems, and in particular Single-pair High-speed DSL (SHDSL) systems. | 2011-09-01 |
| 20110211624 | Digital Subscriber Line Noise Mitigation Techniques, and Applications Thereof - The present invention provides digital subscriber line noise mitigation techniques, and applications thereof. In an embodiment, the present invention provides a toolbox of methods and techniques for mitigating the effects of noise in xDSL systems. These methods and techniques are controllable and locatable at one or both ends of a DSL communication link (e.g., within a central office transceiver unit or a remote transceiver unit). These novel methods and techniques include: (1) per tone noise margin modification, (2) data framer constraints modification, (3) improved noise measurements; (4) more robust on-line reconfiguration processes, (5) worst case noise monitoring, (6) induced bit rate limitations, and (7) distortion noise mitigation. These methods and techniques are particularly useful for mitigating the effects of time-varying noise and impulse noise. | 2011-09-01 |
| 20110211625 | WIRELESS IN-BAND SIGNALING WITH IN-VEHICLE SYSTEMS - This invention pertains to methods and apparatus for data communications from vehicles, to obtain emergency, concierge and other services, using a voice channel of a digital wireless telecommunications network. Signaling is described for commencing data sessions after establishing a voice channel call. The call may be initiated from the vehicle automatically, and the call taker location may be unattended. Signaling methods are selected for traversing both newer and legacy vocoders for ubiquitous operation. | 2011-09-01 |
| 20110211626 | APPARATUS AND METHOD OF CONTROLLING DRIVING CURRENT OF TRANSMISSION - A method of tuning a driving current of a data transmission interface includes: utilizing a driving current with a present current value to continuously send a test data to a receiving end; accumulating a number of times that the test data is sent to generate a transmission counting result; determining whether a transmission error occurs while the test data is sent to the receiving end and accumulating a number of times that the transmission error occurs to generate a transmission error counting result; and when the transmission counting result reaches a predetermined value, determining how to tune the present current value of the driving current according to the transmission error counting result. | 2011-09-01 |
| 20110211627 | MOBILE COMMUNICATION METHOD, MOBILE COMMUNICATION SYSTEM, AND RADIO BASE STATION - A mobile communication method includes: a step in which a neighboring radio base station eNB#A stops transmission of signals other than a predetermined signal in a predetermined subframe within a predetermined frequency band; a step in which a measurement target radio base station eNB#B changes the transmission frequency or the transmission timing of a pilot symbol not to overlap with the transmission frequency and the transmission timing of the predetermined signal; and a step in which a mobile station UE measures the reception quality of the pilot symbol transmitted by the measurement target radio base station eNB#B. | 2011-09-01 |
| 20110211628 | CHANNEL-ASSISTED ITERATIVE PRECODER SELECTION - As a basis for precoder quantization, a channel matrix representing multi-antenna channel characteristics between a transmitter and a receiver in the mobile communications network is estimated (S | 2011-09-01 |
| 20110211629 | Method and System for Determining a Quality Value of a Video Stream - Hence a method is provided for determining a quality value of a video stream, comprising the steps of: identifying lost data packets of the video stream; identifying at least two intra coded frames of the video stream; determining intra coded frames having a maintained image quality, based on estimating if a lost data packet is associated with an intra coded frame; estimating a distance between each one of the lost data packets and a next respective, subsequent intra coded frame having a maintained image quality; and generating the quality value, based on the distances. A system and a computer readable medium are also described. | 2011-09-01 |
| 20110211630 | INTER-CARRIER INTERFERENCE REMOVAL DEVICE AND RECEPTION DEVICE USING THE SAME - An inter-carrier interface removal device can improve estimation accuracy of inter-carrier interference caused by Doppler shift in a received multi-carrier signal moving at a high speed, and a reception characteristic of the multi-carrier signal after removing the inter-carrier interference. The inter-carrier interference removal device includes a channel estimation unit estimating a channel frequency characteristic according to a carrier signal, an equalization unit equalizing the carrier signal with the channel frequency characteristic and outputs tentative carrier data, a reliability value calculation unit calculating a reliability value according to the channel frequency characteristic, a weighting unit weighting the tentative carrier data with the reliability value, an ICI component estimation unit estimating an ICI component according to the weighted tentative carrier data and the estimated channel frequency characteristic, and an ICI removal calculation unit removing the ICI component from the carrier signal. | 2011-09-01 |
| 20110211631 | MOVING IMAGE DATA DISTRIBUTION SYSTEM, ITS METHOD, AND ITS PROGRAM - A moving image data distribution system for distributing reproduction content data that is hierarchically structured so that lower layer data is synthesized with upper layer data to form high quality data. The moving image data distribution system includes a transmitting apparatus and a receiving apparatus. The transmitting apparatus includes a transmission data storing unit that stores the reproduction content data, an upper layer first data length determining means for determining a data length of the upper layer first data based on a reproduction delay time from when the receiving apparatus receives only the upper layer data to when the receiving apparatus reproduces the reproduction contents, an upper layer first data transmitting means for reading upper layer first data determined based on the upper layer first data length from the storing unit, and transmitting the upper layer first data to the receiving apparatus, and an upper layer subsequent data transmitting means for reading upper layer subsequent data subsequent to the upper layer first data from the storing unit, and transmitting the upper layer subsequent data to the receiving apparatus. The receiving apparatus includes a lower layer data storing unit that stores the lower layer data, a hierarchical data synthesizing means for synthesizing the lower layer data with the upper layer first data or the upper layer subsequent data, and a reproducing means for reproducing high quality data synthesized by the hierarchical data synthesizing means. | 2011-09-01 |
| 20110211632 | METHOD FOR RECEIVING BROADCASTING SIGNAL AND BROADCASTING RECEIVER - A method for receiving a broadcasting signal and a broadcasting signal receiver are disclosed. Even when a cell is changed while an emergency alert is output, the emergency alert can be continuously output using emergency alert table information included in the broadcasting signal and channel information of the cell. The emergency alert table information may include a cell identifier and the channel information of the cell may include virtual channel information of the cell. | 2011-09-01 |
| 20110211633 | LIGHT CHANGE CODING - An encoding methodology for a video encoder encodes target light change (TLC) frames in order to improve the quality of the resulting decoded video. Backward prediction is applied instead of forward prediction to the frames that are detected as TLC frames. Additionally, the last frame of the TLC activity is forced to use only intra-coding modes. | 2011-09-01 |
| 20110211634 | Method and apparatus for offset metadata insertion in multi-view coded view - A method and apparatus are disclosed and described for providing Offset Metadata insertion in multi-view coded video. The apparatus includes an offset metadata inserter ( | 2011-09-01 |
| 20110211635 | MOVING PICTURE DECODING DEVICE, MOVING PICTURE DECODING METHOD, MOVING PICTURE DECODING SYSTEM, INTEGRATED CIRCUIT, AND PROGRAM - To provide a moving picture decoding device capable of continuing motion compensation even when an error is included in a filter coefficient for motion compensation. The moving picture decoding device includes: a decoding unit ( | 2011-09-01 |
| 20110211636 | IMAGE ENCODER AND IMAGE DECODER - An image encoder includes a preprocessing unit | 2011-09-01 |
| 20110211637 | METHOD AND SYSTEM FOR COMPRESSING DIGITAL VIDEO STREAMS - A video compression method comprises the steps of a) receiving a set of video scenes comprising video frames; b) for each of said video scenes selecting a motion estimation algorithm and/or a rate control algorithm to respectively compress at least two of the scenes, wherein each of said video scenes is encoded by means of a predetermined encoding algorithm; c) carrying out the motion estimation and/or rate control algorithms selection such that the selected motion estimation algorithm provides minimal motion estimation prediction errors and/or the selected rate control algorithm provides the highest quantization factors for the lower distortion; and d) modifying said encoding algorithm for each of said video scenes in order to compress it by means of the selected motion estimation and/or rate control algorithms. | 2011-09-01 |
| 20110211638 | Multi-view image processing apparatus, method and computer-readable medium - Provided is an image processing apparatus, method and computer-readable medium. When encoding a multi-view color and depth video, a motion vector calculator of the image processing apparatus may calculate a block motion vector with respect to a first viewpoint color image. A motion vector borrowing unit may borrow, as a block motion vector with respect to a second viewpoint color image, a block motion vector with respect to the first viewpoint color image based on a disparity calculated from a depth video. | 2011-09-01 |
| 20110211639 | COMPRESSION CODING AND COMPRESSION DECODING OF VIDEO SIGNALS - The invention relates to the compression coding of video signals, and in particular relates to the compression coding of two or more video signals. The invention is particularly suitable for the compression coding of two stereoscopic video signals in a 3 dimensional television system. | 2011-09-01 |
| 20110211640 | METHOD AND APPARATUS FOR ENCODING MOTION VECTOR, AND METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE USING SAME - A method and an apparatus for encoding a motion vector, and a method and an apparatus for encoding/decoding an image using the same are closed. The apparatus includes: a prediction candidate selector for selecting one or more motion vector prediction candidates; a predicted motion vector determiner for determining a PMV among the one or more motion vector prediction candidates; and a differential motion vector encoder for calculating a differential motion vector encoder for calculating a DMV by subtracting the predicted motion vector having been determined, from the current motion vector, and encoding the d having been calculated. The apparatus encodes a motion vector by using the prediction motion vector which is more accurately predicted, and reduces an amount of bits required for encoding information of the predicted motion vector, thereby improving the compression efficiency. | 2011-09-01 |
| 20110211641 | IMAGE ENCODING DEVICE AND IMAGE DECODING DEVICE - The image encoding device of the present invention includes a direct vector determination unit | 2011-09-01 |
| 20110211642 | MOVING PICTURE ENCODING/DECODING APPARATUS AND METHOD FOR PROCESSING OF MOVING PICTURE DIVIDED IN UNITS OF SLICES - A moving picture encoding/decoding apparatus and method for processing a moving picture, which is divided in units of slices are provided. The encoding method includes: dividing a moving picture in units of slices when the moving picture is received; determining an encoding order of moving pictures divided in units of slices; and generating a bitstream by encoding moving pictures, which are divided in units of slices, according to a corresponding order when the encoding order had been determined. | 2011-09-01 |
| 20110211643 | Method and apparatus for bit rate configuration for multi-view video coding - A method and apparatus are disclosed and described for providing bit rate configuration for multi-view video coding. In the video encoder, the method includes encoding image data for at least one picture for at least two joint views of multi-view video content, the at least two joint views including a base view and at least one dependent view. The bit rate configuration for encoding the image data is determined to include an average bit rate and a maximum bit rate for the base view and the average bit rate and the maximum bit rate for the at least two joint views ( | 2011-09-01 |
| 20110211644 | Method for Detecting an Object with a Frequency Modulated Continuous Wave (FMCW) Ranging System - In a method for detecting an object with an FMCW (frequency modulated continuous wave) ranging system a superior accuracy and resolution is obtained by determining the strongest sinusoidal component in the frequency spectrum and removing the determined component from the spectrum, repeating the preceding step at least once, adding one of the components determined in the two preceding steps to the spectrum, re-determining the then strongest sinusoidal component in the spectrum and removing the re-determined component from the spectrum, repeating the preceding step for each remaining of the determined sinusoidal components, and repeating the last two steps until a desired degree of convergence is reached. | 2011-09-01 |
| 20110211645 | Radio device, electronic device, and imaging device - A radio device for transmitting or receiving desired information through an MIMO transmission line, and an electronic device and an imaging device which have the radio device and supplied with drive power together with the radio device may realize to implement a desired radio transmission flexibly in the form suitable for the battery residual amount and power consumption, in which plural antenna sections for performing radio communication by a spatial division multiplexing method on an MIMO transmission line, and a controller for increasing or decreasing the number of the antenna portions used for the radio transmission. | 2011-09-01 |
| 20110211646 | CONTROL STATION DEVICE, TRANSMITTING STATION DEVICE, COMMUNICATION METHOD, AND COMMUNICATION SYSTEM - In a communication system configured by a transmitting station device and a receiving station device for transmitting and receiving a multicarrier signal using a spectrum including a plurality of subcarriers, a superposed rate which is a rate in which a superposed band in which interference is occurring is used in a used frequency band used for transmitting the multicarrier signal is set so as to increase frequency utilization efficiency of the used frequency band, and the multicarrier signal is transmitted using a spectrum allocated in accordance with the set superposed rate. | 2011-09-01 |
| 20110211647 | CLOSED-LOOP MULTIPLE-INPUT-MULTIPLE-OUTPUT SCHEME FOR WIRELESS COMMUNICATION BASED ON HIERARCHICAL FEEDBACK - The present invention provides methods implemented in a base station having a plurality of antennas and one or more user terminals. One embodiment of the method includes receiving feedback from at least one user in response to transmitting a first frame to said at least one user. The first frame is formed by pre-coding at least one symbol using at least one first code word selected from at least one first code book associated with the at least one user. The method also includes transmitting at least one second frame to the user(s). The second frame(s) are pre-coded using at least one second codeword selected from at least one second codebook. The second codebook(s) determined based on the feedback and the first codeword(s). | 2011-09-01 |
| 20110211648 | METHOD, APPARATUS AND SYSTEM FOR PROVIDING FEEDBACK TO A TRANSMIT DIVERSITY DEVICE - A method and system for improving closed loop feedback in transmit diversity communication. In one embodiment of the invention, a predetermined variation of one or more transmit diversity parameters is performed at the transmit diversity transmitter. The receiver compares the transmit diversity parameter values of the received signals to the predetermined variation and transmits to the transmitter a value of a transmit diversity correction parameter. The transmitter may use this correction value to modify the transmit diversity parameter in a subsequent transmission. | 2011-09-01 |
| 20110211649 | Methods and Systems for Noise and Interference Cancellation - Signals propagating from an aggressor communication channel can cause detrimental interference in a victim communication channel. One or more noise cancellers can generate an interference compensation signal to suppress or cancel the interference based on one or more settings. A controller can execute algorithms to find preferred settings for the noise canceller(s). The controller can use a feedback signal (e.g., receive signal quality indicator) received from a victim receiver during the execution of the algorithm(s) to find the preferred settings. One exemplary algorithm includes sequentially evaluating the feedback resulting from a predetermined list of settings. Another algorithm includes determining whether to move from one setting to the next based on the feedback values for both settings. Yet another algorithm includes evaluating a number of sample settings to determine which of the sample settings result in a better feedback value and searching around that sample setting for a preferred setting. | 2011-09-01 |
| 20110211650 | Method and apparatus rate shaping - A method for performing a rate shaping of multiple data streams which are to be transmitted through a network, said network having the capability to perform a rate shaping using a first rate shaping scheme and at least one other rate shaping scheme other than said first rate shaping scheme, wherein said first rate shaping scheme has a smaller impact on the quality of the data stream than said at least one other rate shaping scheme but requires more computational resources than said at least one other rate shaping scheme, said method comprising: | 2011-09-01 |
| 20110211651 | Precoding for time or frequency correlated MIMO channels - Systems and methods are disclosed to generate a codebook for channel state information by generating a random codebook; partitioning channel state information into a set of nearest neighbors for each codebook entry based on a distance metric; and updating the codebook by finding a centroid for each partition. | 2011-09-01 |
| 20110211652 | Method and Apparatus for OFDM Spectral Diversity Using Guard Bands - An OFDM modulation process and means for transmitting multiple carriers through a communication channel having a bandwidth arranged ion chunks with further subcarriers being allocated to form at least one guard band, comprising automatically and periodically shifting said chunks to the left or to the side in order to overlap said guard band and increase spectral diversity. | 2011-09-01 |
| 20110211653 | Device and Method for the Optimal Estimation of Distortion of a Transmission Medium, Comprising the Sequential Emission of Pairs of Quadrature Complementary Sequences - The present invention relates to a device and method for optimal estimation of the distortion caused by the transmission medium by means of the sequential emission of pairs of quadrature complementary sequences, estimating the frequency spectrum of a transmission channel allows obtaining information of considerable interest to analyze its characteristics or correcting the distortion effects introduced in a communication system. This invention describes a new method for extracting said characteristics generating a transmission preamble using complementary sequences, which allows upon reception identifying the distortion caused in each of the I/Q phases of a quadrature modulation system on the transmitted symbols, canceling the phase distortion effects caused by the medium and reducing the equalization of the channel to a single equalizing baseband filter identical for both I | 2011-09-01 |
| 20110211654 | COMMUNICATION DEVICE FOR RECEIVING AND TRANSMITTING OFDM SIGNALS IN A WIRELESS COMMUNICATION SYSTEM - A communication device for transmitting orthogonal frequency division multiplexed (OFDM) signals in a wireless communication system. The device includes a plurality of antenna elements that transmit the OFDM signals to a receiver over a plurality of transmission channels in the wireless communication system. The device also generates weight coefficients applied to each of the plurality of subcarrier signals, and controls an amplitude and/or phase of the plurality of subcarrier signals as a function of said weight coefficients. | 2011-09-01 |
| 20110211655 | METHOD FOR TRANSMITTING SIGNALS IN MULTI-CARRIER RADIO TRANSMISSION SYSTEM - A method for transmitting signals in a multi-carrier radio transmission system is provided, wherein a transmission block is composed of N consecutive OFDM symbols in a time domain and M consecutive physical sub-carriers in a frequency domain, where N is an integer and not less than 1, and M is an integer and not less than 1. The method comprises following steps: a transmitting end encodes and interleaves data; at least one pilot stream exists at the transmitting end, only one pilot signal is transmitted in frequency area for transmission of the pilot signal, and at most one pilot signal is transmitted in each group of OFDM symbols; the transmitting end performs IFFT operation on the encoded and interleaved data and the pilot signal; the transmitting end transmits out the data and the pilot signal through antennae after inserting a preamble signal. | 2011-09-01 |
| 20110211656 | METHOD AND SYSTEM FOR A DELTA QUANTIZER FOR MIMO PRE-CODERS WITH FINITE RATE CHANNEL STATE INFORMATION FEEDBACK - A delta quantizer for MIMO pre-coders with finite rate channel state information feedback may comprise partly quantizing a change in channel state information in a MIMO pre-coding system onto at least a first and a second codebook, each of which comprises one or more unitary matrices, using a cost function; and generating the at least first and second codebook based on at least the channel state information. The channel state information may be a matrix V and the cost function may be defined by the following relationship: | 2011-09-01 |
| 20110211657 | MIMO Communication System and Control Method Thereof - Disclosed are a MIMO communication system and a method of controlling the same. The MIMO communication system includes an MCS (modulation and coding scheme) level selector for selecting an MCS level representing combination of data modulation and coding schemes according to a channel status, a modulation and coding section for processing transmit data according to modulation and coding schemes corresponding to the selected MCS level, a D-STTD (double-space time transmit diversity) encoder for coding the transmit data, which has been processed through the modulation and coding section, through a D-STTD scheme and transmitting the transmit data through M transmit antennas, and a receiver for receiving data, which have been coded through the D-STTD scheme, through N receive antennas, detecting the received data through an OSIC-MMSE (ordered successive interference cancellation-minimum mean-square error) scheme, and decoding the received data through the modulation and coding schemes employed in the modulation and coding section. | 2011-09-01 |
| 20110211658 | SYSTEM AND METHOD OF PERFORMING DIGITAL MULTI-CHANNEL AUDIO SIGNAL DECODING - A system and method are disclosed for performing digital multi-channel decoding of a BTSC composite audio signal. Each subsequent stage of the digital multi-channel decoding process is performed at the lowest sampling rate that yields acceptable performance for that stage. Analog-to-digital conversion of the composite audio signal is performed first to generate a composite digital audio signal. After analog-to-digital conversion, all signal processing may be performed in the digital domain. The composite digital audio signal is digitally filtered to frequency compensate for variations caused by previous stages of processing, including IF demodulation. Digital channel demodulation and filtering are performed to isolate single channels of the composite digital audio signal such as SAP, L−R, and L+R channels. SAP and L−R channels are DBX decoded resulting in corresponding decoded signals using a unique combination of digital filters that are an efficient translation of a corresponding combination of analog filters. The decoded L−R channel and the L+R channel are re-matrixed to form left and right stereo signals. Any of the SAP signal, left and right stereo signals, and L+R channel signal may be sample rate converted and output at a standard audio output rate. | 2011-09-01 |
| 20110211659 | Low-latency Viterbi survivor memory architecture and method using register exchange, trace-back, and trace-forward - In various aspects, the disclosure describes systems and methods for decoding of convolutionally encoded signals representing, for example, telecommunications signals such as command or content signals used in digital telecommunications. In various embodiments such aspects of the disclosure provide systems and methods for improving the efficiency, speed, and power consumption of such processes by providing architectures and methods for processing various parts of the encoded data records in parallel, using multiple and optionally specially-designed, dedicated memory registers and multiplexers. | 2011-09-01 |
| 20110211660 | MULTI -CHANNEL SEQUENTIAL VITERBI DECODER - A multi-channel sequential Viterbi decoder includes: an input data buffer, a “Read Single Data Word from Input Data Buffer” signal driver, a processing unit selector, a decoder channel parameters registers unit, a processing unit for the “Reset Path Metrics” command, a processing unit for the “Set Path Metric Value for the Given Path Number” command, a processing unit for the “Get Single Bit from the Path with Given Number” command, a processing unit for the “Process Input Samples” command, a decoding paths and path metrics RAM, a unit for generating current decoder channel base address for the decoding paths and path metrics RAM, a unit for generating cell address for the decoding path and path metric RAM, and a data buffers unit for decoder channels output. | 2011-09-01 |
| 20110211661 | Metrics Calculations Utilizing Pre-Stored Values - A trellis processing technique for estimating a transmitted signal from a received signal acquired through a channel achieves a reduced computational structure when implementing a DDFSE-like branch metrics calculation by pre-storing computed values, which can be re-used. The technique involves storing differences between a received symbol and different products, each of which is a product of a channel coefficient corresponding to a least time delay and a different possible transmitted symbol. A summation of products is calculated, each product being a product of a possible transmitted signal symbol and a channel coefficient other than the channel coefficient corresponding to the least time delay, the summation being specific to a branch-start state in a trellis. The summation is combined with different stored differences in a calculation of branch metrics leading to different branch-end states in the trellis. | 2011-09-01 |
| 20110211662 | ANTENNA GROUPING AND GROUP-BASED ENHANCEMENTS FOR MIMO SYSTEMS - Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter has at least three transmit antennas and includes a feedback decoding portion configured to recover at least one group-based channel quality indicator provided by a feedback signal from a receiver, wherein each group-based channel quality indicator corresponds to one of a set of transmission layer groupings. The transmitter also includes a modulator portion configured to generate at least one symbol stream and a mapping portion configured to multiplex each symbol stream to at least one transmission layer grouping. The transmitter further includes a pre-coder portion configured to couple the transmission layers to the transmit antennas for a transmission. The receiver includes a decoder portion which is configured to use decoded signals from at least one group to decode the other groups. | 2011-09-01 |
