30th week of 2012 patent applcation highlights part 31 |
Patent application number | Title | Published |
20120188990 | Method for aggregating media access control addresses using a summary media access control address(es) - In frame switched communication networks, information is forwarded from a source to a destination based on a destination address. In IEEE 802 networks these addresses are called Media Access Control (MAC) addresses. MAC addresses identify the source and destination station of each frame, however typically don't contain any subfields which identify the physical or logical location (or subnetwork) of the station. Such an address can be called a flat address. The entities of networks using IEEE 802 MAC addresses don't have methods for aggregating MAC addresses or for forwarding frames based on aggregates rather than station MAC addresses. The use of station MAC addresses for frame forwarding limits the scaling, lowers the efficiency, reduces the security and raises the cost of these networks. The method described here solves the MAC address aggregation problem by using a summary MAC address to represent an aggregate of summarized MAC addresses. | 2012-07-26 |
20120188991 | Methods And Apparatus For Use In Controlling An Access Point Mode Of Operation For A Mobile Terminal - Techniques for use in controlling an access point mode of operation of a mobile terminal are described. Initially, the mobile terminal operates in the access point mode of operation for communication with one or more other mobile terminals. While operating in the access point mode, the mobile terminal receives, from the one or more other mobile terminals, network information comprising one or more network identifiers which identify one or more wireless networks within coverage of the one or more other mobile terminals. The mobile terminal disables the access point mode of operation in response to identifying that at least one of the received network identifiers corresponds to a predetermined wireless network or predetermined type of wireless network. In one example, the mobile terminal is operative in accordance with IEEE 802.11, the received network identifiers comprise service set identifiers (SSIDs), and the predetermined wireless network is an enterprise network. | 2012-07-26 |
20120188992 | INTERFERENCE CONTROL SYSTEM FOR SIMULTANEOUSLY SUPPORTING LOW POWER COMMUNICATION AND HIGH SPECTRAL EFFICIENT COMMUNICATION - Provided are a method and apparatus for controlling signal interference between networks in a personal area network. In one embodiment, an interference control apparatus may include: a cooperation determining unit configured to determine whether to perform a wireless cooperation with a neighboring mobile hub that manages a neighboring sensor node, based on a magnitude of an interference signal from the neighboring sensor node; a transmitter configured to transmit, to the neighboring mobile hub via a first communication link, first information received from a target sensor node; a receiver configured to receive the first information from the target sensor node via a second communication link, and to receive second information from the neighboring mobile hub via the first communication link; and a decoding unit configured to perform wireless cooperative multi-user decoding based on the first information and the second information. | 2012-07-26 |
20120188993 | Managed Access Point Protocol - Methods, apparatuses and systems facilitating deployment and configuration of managed access points in hierarchical wireless network systems. An embodiment of the invention facilitates deployment and configuration of conventional, substantially autonomous access points operating in connection with a central management node, such as a server or appliance. In another embodiment, the present invention facilitates deployment and configuration of light-weight access points in a hierarchical wireless network system. In one embodiment, the present invention also provides a streamlined encryption key exchange protocol adapted to hierarchical wireless network system architectures. | 2012-07-26 |
20120188994 | PILOT TRANSMISSION AND CHANNEL ESTIMATION FOR A COMMUNICATION SYSTEM UTILIZING FREQUENCY DIVISION MULTIPLEXING - A receiver for receiving a pilot generated based on a polyphase sequence having a constant time-domain envelope and a flat frequency spectrum is disclosed. In one design, the receiver includes at least one demodulator and at least one processor. The demodulator(s) receive at least one single-carrier frequency division multiple access (SC-FDMA) symbol transmitted via a communication channel and including pilot symbols generated based on a polyphase sequence. The demodulator(s) remove a cyclic prefix in each SC-FDMA symbol and demodulate the at least one SC-FDMA symbol to obtain received pilot symbols. The processor(s) derive a channel estimate for the communication channel based on the received pilot symbols. | 2012-07-26 |
20120188995 | METHOD AND APPARATUS FOR INITIAL RANGING FOR ESTABLISHING A TIME REFERENCE FOR A PREDEFINED SIGNATURE SIGNAL - A method and apparatus is provided for performing initial ranging at a receiver for establishing a time reference for a predefined received signature signal ( | 2012-07-26 |
20120188996 | Systems and Methods for Automatically Synchronizing Data Using a Mobile Communications Device - Embodiments of the invention provide systems and methods for automatically synchronizing data using a mobile communications device (MCD). According to one embodiment, a method for automatically synchronizing data using an MCD is provided. The method may include: associating an automatic synchronization command with an event occurrence on an MCD and at least one MCD application; and, upon detecting the event occurrence, executing the automatic synchronization command to cause automatic synchronization of data between memory of the MCD and at least one remote server associated with the MCD application. | 2012-07-26 |
20120188997 | Reduced power synchronization of wireless devices - Synchronizing at least one wireless sensor includes sending at least one reference message along with a request for acquired data from an access point to the at least one wireless sensor, where the reference message includes a first timestamp indicating when the reference message was sent according to time of a clock of the access point, receiving from the at least one wireless sensor a response that includes the requested data, the first timestamp, and at least one other timestamp corresponding to time of a clock of the at least one wireless sensor, and determining a relative clock offset of the at least one wireless sensor using the timestamps. | 2012-07-26 |
20120188998 | SYNCRONIZING WIRELESS DEVICES - A method of synchronising the reference clock of a first wireless device with a master reference clock of a second wireless device via a wireless network. The method involves transmitting, from the second wireless device to the first wireless device, a dedicated synchronisation frame via a dedicated synchronisation channel; receiving the dedicated synchronisation frame at the first wireless device; and synchronising the reference clock of the first wireless device with the master reference clock of the second wireless device based on the received dedicated synchronisation frame. | 2012-07-26 |
20120188999 | Personal Computer and Mobile Phone Communications through Peer-to-Peer Connection - An information handling system includes a network interface, a radio frequency interface, and a processor. The processor is configured to receive a call initiation signal from a remote system through the network interface, establish a connection with a portable communication device through the radio frequency interface, and accept a call from the remote system. Additionally, the processor is further configured to route audio signals related to the call between the portable communication device and the remote system. | 2012-07-26 |
20120189000 | MANAGING TELEPHONY SERVICES USING MULTIPLE USERS WITHIN A TELEPHONY CONTROL POINT IN A HOME NETWORK - A method for operating a telephony server in a home network is provided, comprising: receiving a first registration action from a first telephony control point in the home network, the first registration action including an identification of a first user within a first telephony control point; supplying a first authentication identifier to the first telephony control point, wherein the first authentication identifier is bound to both the first telephony control point and the first user; receiving an invoked action granting a telephony action from the first telephony control point, wherein the invoked action includes an authentication identifier; determining if the authentication identifier received in the invoked action matches the authentication identifier bound to the user which the telephony action involves; and executing the telephony action if the authentication information received in the invoked action matches the authentication identifier bound to the user which the telephony action involves. | 2012-07-26 |
20120189001 | VOICE OVER IP (VOIP) NETWORK INFRASTRUCTURE COMPONENTS AND METHOD - A voice over Internet protocol communication system and method provides infrastructure components as intermediaries between networks, the components include multi-protocol session controllers and a multi-protocol signaling switch as well as a management system. The session controllers process calls and participate in the calls that flow through it. The session controllers process calls that are either at the edge of the network or at the core of the voice over Internet protocol network. The session controllers associate calls with one another in call peers for incoming calls as ingress call peers and for outgoing calls as egress call peers. A centralized database of call routing policies is provided to the session controllers. The session controllers provide cost management, topology hiding, and inter-working, or conversion, of calls from SIP networks to H.323 networks for both voice and video. | 2012-07-26 |
20120189002 | Protocol Converting 9-1-1 Emergency Messaging Center - Delivery of Next Generation 9-1-1 emergency services to an Internet Protocol (IP) Public Safety Answering Point (PSAP) is enabled using an existing or legacy selective router and Automatic Location Information (ALI) database. Using a protocol converting 9-1-1 messaging center according to the principles of the present invention, existing or legacy selective router equipment can provide Enhanced 9-1-1 (E911) over time division multiplex (TDM) circuits to non-IP capable PSAPs. | 2012-07-26 |
20120189003 | TWO-DIMENSIONAL CIRCULATING SWITCH - A one-dimensional circulating switch may be defined by connections between several switch modules and one or more temporal cyclic rotators. Where a switch module that is part of a first one-dimensional circulating switch is also connected one or more temporal cyclic rotators that define a second one-dimensional circulating switch, a two-dimensional circulating switch is formed. A two-dimensional circulating switch is flexible and may scale to capacities ranging from a few gigabits per second to multiple Petabits per second. | 2012-07-26 |
20120189004 | Data Center Switch - A method of transferring data in a network is provided. Data is received at a sub-switch of a first bundled switch having a plurality of sub-switches, the sub-switch being configured to only couple to connections external to the first bundled switch. The method also includes transferring the data from the first bundled switch using a multi-lane cable coupled to a second bundled switch, a first end of the multi-lane cable coupled to a sub-switch in the first bundled switch and a second end of the multi-lane cable coupled to at least two sub-switches in the second bundled switch. | 2012-07-26 |
20120189005 | Method and System for Automatic Selection of Transmission Media - A method for the selection of transmission media in a communication infrastructure comprises at least the following steps: applying at least one routing rule so as to select the medium over which to transmit the packet, if no routing rule is applicable to said packet, selecting the medium over which to transmit said packet with the aid of a routing table, updating said routing table with the aid of a routing protocol and of a function for computing the routing cost of each medium, applying at least one quality-of-service management rule to said packet by means of filtering. | 2012-07-26 |
20120189006 | COMMUNICATION APPARATUS AND COMMUNICATION SYSTEM FOR ENHANCING SPEED OF COMMUNICATIONS BETWEEN TERMINALS - In communication using TCP, since the transmission bandwidth is significantly influenced by RTT and discard rate, there was a problem that only the transmission bandwidth significantly lower than the contracted bandwidth could be obtained under the environment such as WAN causing large RTT, large hop number and many discarded segments. There is provided an apparatus connected to a receiving side terminal having a means for feeding back to notify all discarded segments to an apparatus connected to a transmitting side terminal; a means for retransmitting the discarded segments fed back to be notified to the apparatus connected to the transmitting side terminal; and a means for controlling transmission bandwidth, based on retransmission bandwidth and discard bandwidth by the apparatus connected to the transmitting side terminal. | 2012-07-26 |
20120189007 | MONITORING AND CORRECTING UPSTREAM PACKET LOSS - An upstream error controller monitors a media stream at a location upstream from an associated set of receivers receiving the media stream. The upstream error controller sends out suppression notices for any media packets lost upstream causing the receivers to suppress sending lost packet notices. In another embodiment, a repair point joins a primary multicast group with multiple receivers for receiving a native media stream. The repair point also joins a second multicast group receiving multicast backup data for retransmitting or repairing the native media stream that does not include an associated set of receivers. In yet another embodiment, the upstream error controller is used in combination with a hybrid packet repair scheme for adaptively switching among unicast retransmission, multicast retransmission, and Forward Error Correction (FEC). | 2012-07-26 |
20120189008 | Method for transmitting and configuring a data packet in a network - The present invention relates to a method for transmitting a data packet in a network, wherein the data packet has a header field containing header data relevant to transmission and a user field, wherein at least one data field containing header data of a first header data type is provided in the header field, and wherein the data packet is transmitted from a transmitter device to a receiver device. In order to make possible a transmission of additional information in the header field without a loss of already existing header data information and without expanding the header data structure, it is proposed according to the invention that in the at least one data field, in addition to the header data of the first header data type, header data of at least one second header data type are also transmitted. | 2012-07-26 |
20120189009 | METHODS AND APPARATUS RELATED TO ROUTE SELECTION WITHIN A NETWORK - In some embodiments, an apparatus includes a first network device configured to receive, from a second network device, a first forwarding-state packet associated with a peripheral processing device and having a first generation identifier. The first network device is configured to receive, from a third network device, a second forwarding-state packet associated with the peripheral processing device and having a second generation identifier. The first network device is configured to implement forwarding-state information included in the first forwarding-state packet based on a comparison of the first generation identifier and the second generation identifier. | 2012-07-26 |
20120189010 | Method for transmitting broadcast service, method for receiving the broadcasting service, and apparatus for receiving the broadcasting service - Provided is a method for receiving a broadcast service. The method includes: receiving a first packetized stream; extracting presentation time information from a header of the first packetized stream; extracting trigger information comprising a target service identifier and a trigger action from a payload of the first packetized stream; and performing the trigger action to an object corresponding to the target service identifier at a time indicated by presentation time information. | 2012-07-26 |
20120189011 | A COMMUNICATION APPARATUS, A COMMUNICATION SYSTEM AND A COMMUNICATION METHOD - A communication apparatus comprises: a memory unit which correlates a label assigned to a packet and an address of a source of the packet, and memorizes them as an entry; a receiving unit which receives a packet from a network; a learning unit which judges whether or not there exists an entry corresponding to the received packet in the memory unit, and in case there exists no entry corresponding to the received packet in the memory unit, stores a label assigned to the received packet and an address of a source of the received packet in the memory unit; and a processing unit which, in case there exists an entry corresponding to the received packet in the memory unit, assigns an address corresponding to the received packet to the received packet. | 2012-07-26 |
20120189012 | Providing Point To Point Communications Among Compute Nodes In A Global Combining Network Of A Parallel Computer - Methods, apparatus, and products are disclosed for providing point to point data communications among compute nodes in a global combining network of a parallel computer that include: determining a class route identifier available for all of the nodes along a communications path from an origin node to a target node; configuring network hardware of each node along the communications path with routing instructions in dependence upon the available class route identifier and the network's topology; transmitting, by the origin node along the communications path, a network packet to the target node, including encoding the available class route identifier in the network packet; and routing, by the network hardware of each node along the communications path, the network packet to the target node in dependence upon the routing instructions for each node and the available class route identifier. | 2012-07-26 |
20120189013 | FLEXIBLE AND EXTENSIBLE RECEIVE SIDE SCALING - In an embodiment, a method is provided. The method of this embodiment provides in response to receiving a packet, looking up a packet characteristic in one of at least one protocol table to determine one or more fields of the packet to use as a hash value, applying a hash function to the hash value to obtain a hash result, and using the hash result to determine one of a plurality of processors on which to process the packet. | 2012-07-26 |
20120189014 | GRACEFUL NETWORK MERGE BY PERFORMING A GRACEFUL TRANSITION OF CONFLICTING ROUTING IDENTIFIERS - A first switch of a first network may receive a second set of information including routing identifiers associated with a second network, wherein the first switch of the first network is connected to a second switch of the second network. The first switch of the first network may transmit a first set of information 54 including routing identifiers associated with the first network. The first switch may determine whether a conflict exists between the second set of information and the first set of information. A conflicting one of the routing identifiers associated with the first or second network may be transitioned to a non-conflicting routing identifier according to the determination of whether a conflict exists between the first set of information and the second set of information. | 2012-07-26 |
20120189015 | MANAGING DATA TRANSFER IN A NETWORK ENVIRONMENT - A method for managing data transfer in a network environment, the method is provided. The method comprises receiving a request to transfer first data from a first source in a source domain comprising a plurality of sources to a first target in a target domain comprising a plurality of targets. If the first source is configured to transfer data in a first mode or if the first source is configured to transfer data in a second mode and the first data has previously been transferred to the target domain, a signature of the first data is transferred to the first target instead of the first data. If the first source is configured to operate in the second mode and the first data has not previously been transferred to the target domain, the first data is transferred to the first target. | 2012-07-26 |
20120189016 | Network Apparatus and Process to Determine the Connection Context for Connections Used for (Local) Offloading - A method, system and device are provided for managing LIPA and/or SIPTO connection releases by providing predetermined context information in either the context request message or response thereto exchanged between source and target Mobility Management Entity (MME) devices to allow the appropriate MME device to determine if LIPA service continuity is provided or not. | 2012-07-26 |
20120189017 | Method and System for Providing Hitless Switching While Maintaining a Power Equivalent Bandwidth (PEB) Ratio Using Multiple Carriers - A method of hitless switching over a communications link, the method comprising transmitting, by a first modulator to a remote receiver, a first carrier signal having a first center frequency, enabling, by a second modulator to the remote receiver, transmission of a second carrier signal having a second center frequency while the first modulator is transmitting the first carrier signal, increasing, through the second modulator, a power level of the second carrier signal while the first carrier signal is transmitting, simultaneously decreasing, through the first modulator, a power level of the first carrier signal while the power level of the second carrier signal is increasing, and disabling transmission of the first carrier signal to the remote receiver when the power level of the second carrier signal reaches a predetermined level. | 2012-07-26 |
20120189018 | Method And System For An Asymmetric PHY Operation For Ethernet A/V Bridging And Ethernet A/V Bridging Extensions - Signals may be communicated with A/V Bridging services between an upstream link partner and a down stream link partner, each comprising an asymmetric multi-rate Ethernet physical layer (PHY). High bandwidth A/V signals may be transmitted from the upstream link partner and low bandwidth signals may be transmitted from the downstream link partner. One or more of a time stamp, a traffic class and/or a destination address may be utilized in generating PDUs as well as data rate request and a resource reservation messages via the asymmetric Ethernet PHY. The receiving link partner may register for deliver of the PDUs. An aggregate communication rate may be distributed evenly or unevenly among one or more links for transmission and aggregated upon reception via asymmetric multi-rate Ethernet PHY operations. Compressed, uncompressed, encrypted and/or unencrypted signals may be handled. Signal processing may comprise echo cancellation, cross talk cancellation, forward error checking and equalization. | 2012-07-26 |
20120189019 | CLUSTER ROUTER AND CLUSTER ROUTING METHOD - A cluster router includes at least one control apparatus and at least two forwarding apparatuses. The control apparatus is connected to the forwarding apparatuses, and the forwarding apparatuses are connected with each other. The control apparatus is configured to generate a routing table of each forwarding apparatus and a packet processing information conversion table of each forwarding apparatus. The forwarding apparatus is configured to receive the routing table of the forwarding apparatus and the packet processing information conversion table of the forwarding apparatus, and execute data exchange between the forwarding apparatuses according to the routing table and the packet processing information conversion table. | 2012-07-26 |
20120189020 | AUTO MED ID ASSIGNMENT WITHIN CFM MAINTENANCE ASSOCIATION - A device may include a maintenance association endpoint configured to select a maintenance association endpoint identifier, transmit the maintenance association endpoint identifier to one or more other maintenance association endpoints, and automatically assign the maintenance association endpoint identifier to the maintenance association endpoint if it is determined that the maintenance association endpoint identifier is available based on a conflict message received from one of the one more other maintenance association endpoints. | 2012-07-26 |
20120189021 | MEDIA ACCESS CONTROL METHOD FOR A BUS SYSTEM AND COMMUNICATION DEVICE - A media access control method is described for controlling access by one user station of a bus system to a first channel of the bus system utilized jointly by a plurality of user stations, where in the case of the method, at least one enable interval is specified for the user station, within which the user station has exclusive access to the first channel. In order to specify a media access control method in which large volumes of data may be transmitted relatively quickly and real-time conditions can be honored during the transmission of messages via the bus system, access to a second channel is utilized by a plurality of user stations is controlled using the method, the second channel being enabled for access by the user station only within the enable interval. | 2012-07-26 |
20120189022 | USER ACCESS METHOD, SYSTEM, ACCESS SERVER, AND ACCESS DEVICE - A user access method, system, access server, and access device are provided in the embodiments of the present invention. The method includes: receiving an access request including user information and path information; and binding the user information and the path information and saving the bound information; where the path information includes information about more than one intermediate device; and the user information is added to the access request by a terminal device, the information about the more than one intermediate device is added to the access device by the intermediate device. According to embodiments of the present invention, the received access request includes the user information and path information, and the user information and the path information are bound and saved. In this way, a network manager can locate a specific user according to the bound user information and path information, and determine information about an entire path. | 2012-07-26 |
20120189023 | METHOD AND APPARATUS FOR TRANSMITTING HEADER-COMPRESSED PACKET BASED ON RETRANSMISSION MECHANISM - A method for transmitting a header-compressed packet based on a retransmission mechanism is disclosed according to the present disclosure. The method mainly includes: a header compressor of a sending device obtains feedback information of a header-compressed packet in a transmission process; and the header compressor determines a state of the header compressor according to the feedback information, compresses a header for the packet according to the state of the header compressor, and sends the packet to a decompressor of a receiving device. According to the present disclosure, a header compression mechanism is combined with an automatic retransmission mechanism, so that the header compressor obtains feedback information of an automatic retransmission technology, and estimates the decompression information of the decompressor correctly, so as to change a state machine of the header compressor at proper time and improve transmission efficiency of the packet. | 2012-07-26 |
20120189024 | Q-SWITCHED GRATING VERTICAL-CAVITY SURFACE-EMITTING LASER SYSTEM AND METHOD FOR FABRICATING THE SAME - A vertical cavity surface emitting laser (VCSEL) system and method of fabrication are included. The VCSEL system includes a gain region to amplify an optical signal in response to a data signal and a first mirror arranged as a partially-reflective high-contrast grating (HCG) mirror at an optical output of the VCSEL system. The VCSEL system also includes a second mirror. The first and second mirrors can be arranged as a laser cavity to resonate the optical signal. The VCSEL system further includes a doped semiconductor region to generate a current through the first mirror in response to a voltage signal to substantially alter the reflectivity of the first mirror to provide Q-switching capability of the VCSEL system. | 2012-07-26 |
20120189025 | MONOLITHIC LASER SOURCE USING RING-RESONATOR REFLECTORS - In a laser source, a first optical waveguide includes a gain medium, and a second optical waveguide includes a phase tuner which adjusts a phase value of the phase tuner to specify the wavelength of the laser source. Furthermore, the laser source includes a first ring resonator and a second ring resonator, which, respectively, are optically coupled to the first optical waveguide and the second optical waveguide at opposite ends of the laser source. In particular, coupling wavelengths of the first and second ring resonators may match a wavelength of the optical signal, thereby defining an optical resonance cavity in the laser source and selecting a laser mode of the laser source which is associated with the wavelength. Additionally, the laser source includes an optical amplifier that receives and amplifies the optical signal output from the optical resonance cavity. | 2012-07-26 |
20120189026 | TUNABLE RESONATORS - Various embodiments of the present invention relate to electronically tunable ring resonators. In one embodiment of the present invention, a resonator structure ( | 2012-07-26 |
20120189027 | SYSTEM AND METHOD FOR PROVIDING CHIRPED ELECTROMAGNETIC RADIATION - A system and method for controllably chirping electromagnetic radiation from a radiation source includes an optical cavity arrangement. The optical cavity arrangement enables electromagnetic radiation to be produced with a substantially linear chirp rate and a configurable period. By selectively injecting electromagnetic radiation into the optical cavity, the electromagnetic radiation may be produced with a single resonant mode that is frequency shifted at the substantially linear chirp rate. Producing the electromagnetic radiation with a single resonant mode may increase the coherence length of the electromagnetic radiation, which may be advantageous when the electromagnetic radiation is implemented in various applications. For example, the electromagnetic radiation produced by the optical cavity arrangement may enhance a range, speed, accuracy, and/or other aspects of a laser radar system. | 2012-07-26 |
20120189028 | Apparatus and Method for Driving Multiple Lasers - A laser device includes a plurality of lasers that includes a first laser and a second laser. The laser device further includes a drive circuit configured to apply a pulsed current to the first laser at a first phase. The drive circuit is further configured to apply the pulsed current to the second laser at a second phase. The first phase and the second phase are different. A total voltage provided to the plurality of lasers during a period between the first and second phases is substantially smaller than a sum of individual voltages provided to the plurality of lasers, respectively, during a pulse period of the pulsed current. | 2012-07-26 |
20120189029 | SEMICONDUCTOR LASER DEVICE - A semiconductor laser device includes a semiconductor laminate structure that includes a light emitting layer that contains In, a p-type guide layer disposed at one side of the light emitting layer, an n-type guide layer disposed at another side of the light emitting layer; a p-type clad layer disposed at an opposite side of the p-type guide layer to the light emitting layer, and an n-type clad layer disposed at an opposite side of the n-type guide layer to the light emitting layer. The semiconductor laminate structure includes a rectilinear waveguide formed parallel to a projection vector of a c-axis onto the crystal growth surface, and a pair of laser resonance surfaces formed of cleavage planes perpendicular to the projection vector. | 2012-07-26 |
20120189030 | NITRIDE SEMICONDUCTOR LASER DIODE - A nitride semiconductor laser diode includes a substrate, an n-side nitride semiconductor layer formed on the substrate, an active layer formed on the n-side nitride semiconductor layer and having a light emitting layer including In | 2012-07-26 |
20120189031 | GAS LASER DISCHARGE PRE-IONIZATION USING A SIMMER-DISCHARGE - A gas discharge laser including a lasing gas between discharge electrodes and has a power supply for generating RF pulses to be delivered to the electrodes of the laser for energizing the lasing gas. A sequence of RF simmer pulses is delivered to the electrodes. The simmer pulses create sufficient free electrons in the lasing gas to facilitate subsequent ignition of the discharge while not causing laser action. RF lasing pulses having a longer duration than the simmer pulses are delivered to the electrodes to ignite the discharge and provide corresponding laser output pulses. Delivery of the simmer pulses is suspended during delivery of the lasing pulses to avoid amplitude or pulse-width modulation of the laser output pulses by the simmer pulses. | 2012-07-26 |
20120189032 | ILLUMINATING APPARATUS, PATTERN INSPECTION APPARATUS, AND METHOD OF FORMING ILLUMINATING LIGHT - An illuminating apparatus includes a rotating phase plate having a height equal to or less than a wavelength of light from a light source and including a plurality of randomly arranged step regions so as to change a phase of light from the light source by allowing the light beam to pass therethrough; and a fly's eye lens including an array of a plurality of lenses configured to pass the light beam passed through the rotating phase plate, wherein a portion in which a product of a maximum size of the plurality of step regions and an optical magnification from the rotating phase plate to a plane of incidence of the fly's eye lens is equal to or less than an arrangement pitch of the plurality of lenses and a portion in which the product is larger than the arrangement pitch of the plurality of lenses are mixed. | 2012-07-26 |
20120189033 | TEMPERATURE SENSING CIRCUIT - A temperature sensing circuit includes a signal generation unit including a delay line and generating a source signal with a pulse width corresponding to a delay value of the delay line, a pulse width expansion unit configured to generate a comparison signal by expanding a pulse width of the source signal, and a change detection unit configured to sense a temperature change using a difference between the pulse widths of the comparison signal and a reference signal. | 2012-07-26 |
20120189034 | UWB MULTI-BURST TRANSMIT DRIVER FOR AVERAGING RECEIVERS - A multi-burst transmitter for ultra-wideband (UWB) communication systems generates a sequence of precisely spaced RF bursts from a single trigger event. There are two oscillators in the transmitter circuit, a gated burst rate oscillator and a gated RF burst or RF power output oscillator. The burst rate oscillator produces a relatively low frequency, i.e., MHz, square wave output for a selected transmit cycle, and drives the RF burst oscillator, which produces RF bursts of much higher frequency, i.e., GHz, during the transmit cycle. The frequency of the burst rate oscillator sets the spacing of the RF burst packets. The first oscillator output passes through a bias driver to the second oscillator. The bias driver conditions, e.g., level shifts, the signal from the first oscillator for input into the second oscillator, and also controls the length of each RF burst. A trigger pulse actuates a timing circuit, formed of a flip-flop and associated reset time delay circuit, that controls the operation of the first oscillator, i.e., how long it oscillates (which defines the transmit cycle). | 2012-07-26 |
20120189035 | METHOD AND SYSTEM FOR CODE REUSE AND CAPACITY ENHANCEMENT USING NULL STEERING - The number of users and data capacity of wireless systems are increased by employing apparatus and method for increasing the number of spreading codes available in the system by providing a mechanism to reuse the already allocated spreading code or use the codes that may correlate to those already being used within the same sector/cell. This, in return, provides capacity improvement proportional to the number of added base station (BS) antennas for each cell. An antenna null steering technique for code allocation maintains the cross correlation properties of the codes only for the desired user and to obtain a gain in capacity improvement. | 2012-07-26 |
20120189036 | SYSTEMS FOR THE MULTICARRIER TRANSMISSION OF DIGITAL DATA AND TRANSMISSION METHODS USING SUCH SYSTEMS - A system includes at least a transmitter having a serial-to-parallel converter, an iFFT block and a frequency de-spreader device that applies each signal that results from multiplying a data sample by one of the predetermined frequency coefficients of the prototype filter of a synthesis filter bank to one of the inputs of the iFFT block presenting a size that is strictly greater than the number of subchannels. Also described is a system including at least one receiver including a serial-to-parallel converter, a FFT block presenting a size that is strictly greater than the number of subchannels of the system, and a frequency de-spreader device that multiplies the signal from each output of the FFT block by one of predetermined frequency coefficients of the prototype filter of an analysis filter bank and sums the results of these multiplications to deliver at least a portion of the output signal from the receiver. | 2012-07-26 |
20120189037 | RELAY AND DATA RELAY METHOD - Disclosed is a relay. The relay includes: a reception unit configured to receive signals from a transmitter; a processor configured to estimate a channel with respect to the transmitter based on a pilot signal of the transmitter among receiving signals, remove the pilot signal from among the received signals, amplify the signals without the pilot signal according to the estimated channel, and insert a pilot signal of the relay into the amplified signals; and a transmitter transmitting the signals including the pilot signal of the relay under the control of the processor. | 2012-07-26 |
20120189038 | COMMUNICATION DEVICES WITH INTEGRATED THERMAL SENSING CIRCUIT AND METHODS FOR USE THEREWITH - A communication device includes an integrated circuit having an on-chip thermal sensing circuit that generates a temperature signal based on a temperature of the integrated circuit. A processing module processes the temperature signal to generate temperature information that can be transmitted to a remote device or processes the temperature signal to generate control for adjusting transmit and/or receive characteristics of an RF transceiver. | 2012-07-26 |
20120189039 | Method of Controlling a Communications Link - The present invention is directed to a method of controlling a communications link and apparatus configured to perform this method. This invention is particularly related to but in no way limited to MIMO (multiple inputs multiple outputs) wireless communications systems. The method comprises the steps of determining at the receiver the quality of the communications link and based on this, selecting a group of transmission parameters and an element from this group. These selections are then communicated to the transmitter. The transmission parameter may be the transmission configuration such as the modulation and coding scheme. The invention minimises the required feedback signalling from the receiver to the transmitter by exploiting temporal correlation of the parameter being controlled, whilst allowing rapid selection of the parameter. | 2012-07-26 |
20120189040 | MULTI-MODE RECEIVER - A multi-mode receiver system for processing signals based on a plurality of systems is disclosed. Embodiments of the invention provide for a shared architecture for processing baseband signals corresponding to a plurality of systems. | 2012-07-26 |
20120189041 | METHOD FOR ALLOCATION REFERENCE SIGNALS IN MIMO SYSTEM - A user equipment (UE) receiving a plurality of reference signals in a wireless multiple-input multiple-output (MIMO) communication system includes a transceiver configured for receiving the plurality of reference signals for multiple antennas in a sub-frame, the sub-frame including a plurality of Orthogonal Frequency Division Multiplexing (OFDM) symbols in a time domain over a plurality of sub-carriers in a frequency domain. A first array is repeated in the frequency domain on a first OFDM symbol of the sub-frame, a second array is repeated in the frequency domain on a second OFDM symbol of the sub-frame and a third array is repeated in the frequency domain on a third OFDM symbol of the sub-frame, and each of the first, second and third arrays consists of six contiguous symbols in the frequency domain. | 2012-07-26 |
20120189042 | Building, Transmitting, and Receiving Robust Protocol Data Units in Power Line Communications - Systems and methods for building, transmitting, and receiving robust protocol data units (PDUs) in power line communications (PLC) are described. In some embodiments, a method may include receiving a PDU, applying bit-level repetition to at least a portion of the PDU to create a repeated portion, block interleaving two or more symbols corresponding to the repeated portion to create a block interleaved portion, inserting pilot tones in the block interleaved portion, and modulating each tone in the block interleaved portion with respect to a nearest one of the inserted pilot tones to create a robust PDU. In some implementations, the robust PDU may include a first header portion carrying information encoded using a first version of a PLC protocol (e.g., a legacy standard) and a second header portion carrying information encoded using a second version of the PLC protocol (e.g., a newer version of the same standard). | 2012-07-26 |
20120189043 | Recursive frequency estimation - A system for receiving signals is set forth. The system includes an open loop frequency offset updating system adapted to receive an input signal. The open loop frequency offset updating system updates a frequency offset recursively, using a real time update value for value Γ(ƒ,N). The system samples the signal and calculates an alternate quantity based on Γ(ƒ,N) to determine a maximum value of the alternate quantity. | 2012-07-26 |
20120189044 | Switching Transistor States to Communicate Faulty Wire in Cable - An electronic device has a transmitter, a microprocessor in communication with the transmitter, a receiver that communicates with the transmitter along a cable using differential signaling, and a transistor. The transistor switches states to communicate a signal to the microprocessor when a wire in the cable is faulty. | 2012-07-26 |
20120189045 | Signaling with Superimposed Clock and Data Signals - A data receiver circuit includes an interface to receive an input signal that includes a data signal and a clock signal superimposed on the data signal. The data signal has an associated symbol rate and an associated symbol period equal to the reciprocal of the associated symbol rate. The clock signal has a frequency N times the associated symbol rate, where N is an integer. A phase-locked loop (PLL) coupled to the interface extracts the clock signal from the input signal to provide an extracted clock signal. A phase interpolator adjusts the phase of the extracted clock signal to provide a phase-adjusted extracted clock signal. A sampling circuit samples the data signal at a sampling point. The sampling circuit is synchronized to the phase-adjusted extracted clock signal. | 2012-07-26 |
20120189046 | Asymmetric Multi-Channel Adaptive Equalizer - An apparatus is disclosed to compensate for non-linear effects resulting from the transmitter, the receiver, and/or the communication channel in a communication system. A receiver of the communication system contains an image cancellation module that compensates for images generated during the modulation and/or demodulation process. The image cancellation module includes a fine carrier correction loop to correct for frequency offsets between the transmitter and receiver. The image cancellation module includes a coarse acquisition mode and a decision directed mode. The decision directed mode allows for a larger signal-to-noise ratio for the receiver when compared against the coarse acquisition mode. | 2012-07-26 |
20120189047 | Arbitrary Precision Multiple Description Coding - In one aspect, an encoder comprises arbitrary precision multiple description generation circuitry configured to produce multiple descriptions of a given signal by processing the signal using at least one matrix having a dimension which is selected as a function of a designated number of transmission resources, such as OFDM subcarriers or TDM time slots, that are allocated for transmission of the multiple descriptions. For example, the signal may comprise a vector x of dimension N and the arbitrary precision multiple description generation circuitry may be configured to generate M descriptions of the vector x where the value of M is selected to satisfy a particular one of three possible cases M=N, M>N and M2012-07-26 | |
20120189048 | IMAGE RECORDING DEVICE, IMAGE REPRODUCTION DEVICE, AND IMAGE RECOVERY DEVICE - A video recording device comprises an input unit, an encode unit, and an output unit. A plurality of channels of video data is inputted to an input unit. An encode unit is configured to adjust the GOP structure and frame size to be the same in the plurality of channels of video data to the input unit, and compress and encode the plurality of channels of video data inputted at a variable bit rate. An output unit is configured to output the plurality of channels of video data compressed and encoded by the encode unit. | 2012-07-26 |
20120189049 | SUB-SLICES IN VIDEO CODING - A video encoder partitions a slice of a picture into a plurality of sub-slices. When the video encoder encodes the slice, the video encoder generates a coded slice that includes coded sub-slices that correspond to the sub-slices. Each of the sub-slices can be parsed independently of each other one of the sub-slices and can be reconstructed independently of each other one of the sub-slices. Accordingly, a video decoder may parse two or more of the sub-slices in parallel and decode two or more of the sub-slices in parallel. | 2012-07-26 |
20120189050 | FILTERING METHOD FOR REMOVING BLOCK ARTIFACTS AND/OR RINGING NOISE AND APPARATUS THEREFOR - Provided are a filtering method and apparatus for removing blocking artifacts and ringing noise. The filtering method includes transforming video data on a block-by-block basis, and detecting the presence of an edge region in the video data by checking the distribution of values obtained by the transformation. Accordingly, it is possible to completely remove blocking artifacts and/or ringing noise by more effectively detecting the presence of an edge region in video data. | 2012-07-26 |
20120189051 | METHODS AND APPARATUS FOR DEBLOCKING FILTERING OF NON-LOCAL INTRA PREDICTION - Methods and apparatus are provided for deblocking filtering on non-local intra prediction. An apparatus includes an encoder for encoding picture data using non-local intra prediction. The encoder includes a deblocking filter configured for use with non-local intra prediction modes so as to deblock filter at least a portion of the picture data encoded using the non-local intra prediction. | 2012-07-26 |
20120189052 | SIGNALING QUANTIZATION PARAMETER CHANGES FOR CODED UNITS IN HIGH EFFICIENCY VIDEO CODING (HEVC) - In one example, this disclosure describes a method of decoding video data. The method comprises receiving a coding unit (CU) of encoded video data. The CU is partitioned into a set of block-sized coded units (CUs) according to a quadtree partitioning scheme, and decoding one or more syntax elements for the CU to indicate a change in a quantization parameter for the CU relative to a predicted quantization parameter for the CU only if the CU includes any non-zero transform coefficients. The one or more syntax elements are decoded from a position within the encoded video data after an indication that the CU will include at least some non-zero transform coefficients, and before the transform coefficients for the CU. | 2012-07-26 |
20120189053 | COMBINED REFERENCE PICTURE LIST CONSTRUCTION FOR VIDEO CODING - This disclosure relates to techniques for constructing a combined reference picture list, List C, based on List | 2012-07-26 |
20120189054 | Apparatus and Method for Coding Picture Data - A coding apparatus for hierarchically (layered data) coding two field data associated with each of a plurality of picture data composing a moving picture image. The coding apparatus comprising: a first coding unit configured to encode one of the two field data; a conversion unit configured to interpolate first predicted image data generated by the first coding unit encoding the one of the two field data and generate second predicted image data of a scanning position of the other field data of the two field data; and a second coding unit configured to encode the other field data of the two field data based on the second predicted image data generated by the conversion unit. | 2012-07-26 |
20120189055 | MOTION VECTOR PREDICTION - A method of coding video data includes determining a candidate motion vector for each of one or more candidate portions of a video frame and determining a current motion vector for a current portion of a current frame. The current motion vector identifies a portion of a reference frame that at least partially matches the current portion of the current frame. The method also includes calculating a motion vector difference between the current motion vector and each of the candidate motion vectors, selecting one of the candidate motion vectors based on the calculated motion vector differences, signaling an index identifying the candidate portion having the selected one of the candidate motion vectors, and signaling the corresponding motion vector difference calculated with respect to the selected one of the candidate motion vectors. | 2012-07-26 |
20120189056 | Video Coding Redundancy Reduction - Embodiments for reducing redundancy in video coding are disclosed. In accordance with at least one embodiment, video content is represented as a tree structure in which the nodes of the tree structure are associated with attributes of the video content. An encoder analyzes the nodes to determine whether there is redundancy associated with a last node of a divided node. In another embodiment, bidirectional prediction video coding techniques are applied to the video content. The encoder analyzes two lists of reference frames to determine whether a third mode of bidirectional prediction is redundant to a second mode of bidirectional prediction. The efficiency of video coding is improved by refraining from sending data symbols to the decoder in the event that the video coding techniques contain redundancy. | 2012-07-26 |
20120189057 | Motion Prediction in Video Coding - There is disclosed apparatuses, methods and computer programs for utilizing motion prediction in video coding. Coding type of a block of pixels of a video representation encoded in a bitstream is read, where values of said pixels having a first precision. If the type of the block is a block predicted by using two or more reference blocks, a first reference pixel location in a first reference block is determined and a second reference pixel location in a second reference block is determined. The first reference pixel location is used to obtain a first prediction having a second precision, which is higher than the first precision. The second reference pixel location is used to obtain a second prediction, also having the second precision. The first prediction and the second prediction are combined to obtain a combined prediction having the first precision. | 2012-07-26 |
20120189058 | SINGLE REFERENCE PICTURE LIST CONSTRUCTION FOR VIDEO CODING - The example techniques described in this disclosure provide for an efficient manner to encode or decode a video block of a picture using a single reference picture list. The single reference picture list may include identifiers for reference picture or pictures used to encode or decode the video block. In some examples, a video encoder or decoder may encode or decode a video block that is predicted from two reference pictures using the single reference picture list, and encode or decode a video block that is predicted from one reference picture using the same, single reference picture list. | 2012-07-26 |
20120189059 | BUFFER COMPRESSION FOR MOTION VECTOR COMPETITION - A method for decoding video includes creating a first list of motion vectors from at least one neighboring block in a current frame of the video and creating a second list of motion vectors from at least one previous block in a temporally earlier frame of the video. A third list of motion vectors is created based upon the first list and the second list. Based upon receiving a motion vector competition control parameter selecting one of the motion vectors from the third list, wherein the second list of motion vectors is further based upon a flooring function. | 2012-07-26 |
20120189060 | APPARATUS AND METHOD FOR ENCODING AND DECODING MOTION INFORMATION AND DISPARITY INFORMATION - An apparatus and method for encoding and de1/5/2012coding motion information and disparity information are provided. The apparatus may extract a vector from peripheral blocks of a current block, which is a vector of the same type as a vector used for predicting and compensating the current block, and perform prediction and compensation of the current block using the extracted vector. | 2012-07-26 |
20120189061 | METHOD AND APPARATUS FOR EFFECTIVELY COMPRESSING MOTION VECTORS IN VIDEO CODER BASED ON MULTI-LAYER - A method and apparatus of improving the compression efficiency of a motion vector is provided. The method includes obtaining a motion vector in a base layer frame having a first frame rate from an input frame, obtaining a motion vector in a first enhancement layer frame having a second frame rate from the input frame, the second frame rate being greater than the first frame rate, generating a predicted motion vector by referring to a motion vector for at least one frame among base layer frames present immediately before and after the same temporal position as the first enhancement layer frame if there is no base layer frame at the same temporal position as the first enhancement layer frame, and coding a difference between the motion vector in the first enhancement layer frame and the generated predicted motion vector, and the obtained motion vector in the base layer. | 2012-07-26 |
20120189062 | MOVING PICTURE CODING METHOD, MOVING PICTURE CODING APPARATUS, MOVING PICTURE DECODING METHOD, MOVING PICTURE DECODING APPARATUS, AND MOVING PICTURE CODING AND DECODING APPARATUS - A moving picture coding apparatus includes: a reference picture list management unit which assigns a reference picture index to each reference picture and creates reference picture lists together with display order and the like; a skip mode prediction direction determination unit which determines a prediction direction in a skip mode for a current block to be coded, using the reference picture lists; and an inter prediction control unit which compares a cost of a motion vector estimation mode, a cost of a direct mode, and a cost of the skip mode in which a prediction picture is generated using a predicted motion vector generated according to the prediction direction determined by the skip mode prediction direction determination unit, and determines a more efficient inter prediction mode among the three modes. | 2012-07-26 |
20120189063 | METHOD FOR ENCODING SIGNALS, RELATED SYSTEMS AND PROGRAM PRODUCT THEREFOR - A method for encoding video signals subjects the signals to unbalanced multiple description coding. The unbalanced multiple description coding codes a video signal in a first high resolution packet and a second low resolution packet and represents, respectively a first high resolution description and a second low resolution description. The unbalanced multiple description coding step includes using different intra refresh periods for the first and second high resolution descriptions, with an intra refresh period for the second low resolution description shorter than the intra refresh period of the first high resolution description. | 2012-07-26 |
20120189064 | ADAPTIVE LOOP FILTERING USING MULTIPLE FILTER SHAPES - Disclosed are adaptive loop filtering techniques in the context of video encoding and/or decoding. For each video unit, the encoder can select a filter shape, and can place into the bitstream information that identifies the filter shape. At least one filter whose shape is the selected filter shape is used to loop filter at least one sample. At the decoder, a filter shape is obtained by decoding information that identifies the filter shape. At least one filter whose shape is the obtained filter shape is used to loop filter at least one reconstructed sample. Different filter shapes are also disclosed. | 2012-07-26 |
20120189065 | VIDEO PROCESSING SYSTEM WITH LAYERED VIDEO CODING FOR FAST CHANNEL CHANGE AND METHODS FOR USE THEREWITH - A video processing system includes a video encoder that encodes a video stream into an independent video layer stream and a first dependent video layer stream based on a motion vector data or grayscale and color data. | 2012-07-26 |
20120189066 | METHOD AND DEVICE FOR VIDEO IMAGE PROCESSING, CALCULATING THE SIMILARITY BETWEEN VIDEO FRAMES, AND ACQUIRING A SYNTHESIZED FRAME BY SYNTHESIZING A PLURALITY OF CONTIGUOUS SAMPLED FRAMES - To acquire a high-resolution frame from a plurality of frames sampled from a video image, it is necessary to obtain a high-resolution frame with reduced picture quality degradation regardless of motion of a subject included in the frame. Because of this, between a plurality of contiguous frames Fr | 2012-07-26 |
20120189067 | METHOD AND APPARATUS FOR PARALLEL PROCESSING OF IN-LOOP DEBLOCKING FILTER FOR H.264 VIDEO COMPRESSION STANDARD - A parallel deblocking filtering method, and deblocking filter processor performing such deblocking, for removing edge artifacts created during video compression. The method includes loading luma samples for a macroblock. Filtering is performed on a set of vertical edges of the macroblock using information in the luma samples, with vertical edge filtering occurring concurrently with the loading of the luma samples. The method also includes filtering a set of horizontal edges of the macroblock using information in the luma samples. The horizontal edge filtering occurs in parallel with vertical edge sampling and with loading operations. The use of parallel and concurrent operations significantly enhances the efficiency of the deblocking method. Storing of filtered samples is also performed in the method, and this storing is performed concurrently with some loading operations as well as filtering operations. Edge filtering includes performing filtering to the H.264 standard and its deblocking filtering algorithm. | 2012-07-26 |
20120189068 | ELECTRONIC TERMINALS AND METHODS USING A USB CABLE AS A RF BROADCAST SIGNAL ANTENNA - An electronic terminal includes a USB antenna interface circuit and a broadcast receiver circuit. The USB antenna interface circuit is configured to be electrically connected to at least one conductive element of a USB cable that serves as an antenna for receiving a broadcast RF signal from a remote broadcast transmitter, and is configured to extract the broadcast RF signal from a RF signal present in the at least one conductive element of the USB cable. The broadcast receiver circuit is electrically connected to the USB antenna interface circuit to receive the extracted broadcast RF signal and configured to tune to a defined station signal carried by the extracted broadcast RF signal. | 2012-07-26 |
20120189069 | Systems and Methods for a Multiport Synchronous-Asynchronous Client for Scheduling and Delivering Content for Digital Radio Broadcast Transmission - Systems, methods, and processor readable media are disclosed for scheduling and delivering content for digital radio broadcast transmission. To overcome the inefficiencies of conventional scheduling and delivery techniques, the present disclosure describes a novel multiport synchronous-asynchronous client for receiving content from multiple sources and then scheduling and delivering that content to an importer. | 2012-07-26 |
20120189070 | PEAK-TO-AVERAGE POWER RATIO REDUCTION FOR HYBRID FM HD RADIO TRANSMISSION - A method includes: (a) modulating a set of subcarriers with a set of data to produce a modulated OFDM symbol vector; (b) modulating a FM carrier signal with the set of data to produce a modulated FM symbol; (c) combining the modulated OFDM symbol and the modulated FM symbol to produce a modulated hybrid symbol; (d) limiting the magnitude of the modulated hybrid symbol to produce a first limited modulated hybrid symbol; (e) demodulating the first limited modulated hybrid symbol to recover distorted QPSK constellations; (f) constraining the distorted QPSK constellations to values greater than or equal to a minimum threshold value to produce constrained QPSK constellations; (g) demodulating the modulated hybrid symbol to produce a demodulated hybrid symbol vector; (h) subtracting the demodulated FM symbol vector from the Hybrid symbol vector to produce modified OFDM symbol vector; (i) applying a mask to inactive subcarriers in the plurality of subcarriers of the OFDM symbol vector; (j) modulating an OFDM symbol vector with OFDM modulation to produce a modified modulated OFDM symbol; (k) combining the modulated OFDM symbol and the modulated FM symbol to produce a modulated hybrid symbol; and (l) outputting the modified modulated hybrid symbol. | 2012-07-26 |
20120189071 | HIGH SPEED INFORMATION TRANSFER METHOD AND SYSTEM - A high speed information transfer method and system that encode volumes of information into electromagnetic radiation, successfully transmits the electromagnetic radiation and decodes the electromagnetic radiation back into information. | 2012-07-26 |
20120189072 | COMBINED DATA AND PROBE (CDP) FRAME - A system or method in an OFDM communication environment includes transmitting, by a transmitter, and/or receiving, by a receiver, a frame that includes one or more preamble symbols, one or more header symbols, a plurality of data symbols, and a plurality of probe symbols. The probe symbols are predefined symbols that do not carry user data and are generated by modulating a predefined pseudo-random bit sequence (PRBS). A frame header, communicated in the one or more header symbols, includes one or more bit fields that indicate that the frame includes N probe symbols, wherein N is an integer greater than 1, and wherein the plurality of probe symbols are transmitted or received after the one or more header symbols and before the plurality of data symbols. | 2012-07-26 |
20120189073 | Interference Mitigation for Orthogonal Frequency Division Multiplexing Communication - An Orthogonal Frequency Division Multiplex (OFDM) communication system comprises OFDM transmitters and an OFDM receiver. The system comprises a subcarrier status data controller for transmitting subcarrier status data to the OFDM receiver. The subcarrier status data indicates the active subcarriers of the OFDM transmitters. The OFDM receiver comprises a receiver which receives a signal comprising a desired signal component from a first OFDM transmitter and interference from at least one interfering OFDM transmitter. The OFDM receiver further comprises a subcarrier status processor which receives the subcarrier status data and a channel estimator which determines channel estimates for at least an air interface communication channel from the first OFDM transmitter and an air interface communication channel from the interfering OFDM transmitter. An interference mitigation processor performs interference mitigation of the interference in response to the subcarrier status data and the channel estimates. | 2012-07-26 |
20120189074 | Diversity for Digital Distributed Antenna Systems - Techniques are provided for a base station to transmit and receive wireless signals via a plurality of remote transceiver stations deployed in a coverage area. The remote transceiver stations are coupled to the base station in order to communicate with wireless mobile devices. A transmission time delay is determined for a message to be transmitted from corresponding remote transceiver stations to a wireless mobile device. Transmission of the message to be wirelessly transmitted from the two or more remote transceiver stations is delayed by a corresponding transmission time delay. The delayed transmissions appear as a resolvable multipath transmission to receivers in the wireless mobile user devices. Techniques are also provided for delaying the processing of uplink transmissions at the base station receiver. Delays associated with downlink or uplink transmissions may also be programmed into individual remote transceiver stations. | 2012-07-26 |
20120189075 | METHOD AND APPARATUS FOR OBTAINING PRECODING MATRIX INDICATOR - The present disclosure discloses a method and an apparatus for obtaining a precoding matrix indicator, and relates to the field of communication technologies. The method includes: obtaining a first rotation matrix according to first channel information; obtaining a first differential matrix according to the first rotation matrix and a currently-obtained instantaneous beam forming matrix/precoding matrix; and quantizing, according to a first differential codebook, a pre-acquired first rank indicator, and preset quantization criteria, the first differential matrix to obtain a differential precoding matrix indicator. The apparatus includes: a first rotation matrix obtaining module, a first differential matrix obtaining module, and a differential precoding matrix indicator obtaining module. In the present disclosure, the differential PMI is obtained according to the channel information, and the differential PMI is used for feedback, which not only reduces an overhead, but also improves feedback accuracy. | 2012-07-26 |
20120189076 | MULTIPLE ANTENNAS TRANSMIT DIVERSITY SCHEME - A method from transmitting data via multiple antennas. The method contemplates modulating data to be transmitted into a plurality of modulated symbols, encoding each pair of modulated symbols from among said plurality of symbols in accordance with a transmission diversity scheme to result in a plurality of 2 by 2 matrices, with each 2 by 2 matrix corresponding to each pair of modulated symbols, orthogonally spreading the plurality of 2 by 2 matrices to generate an output matrix, and transmitting the symbols in the output matrix via a plurality of antennas by using either a space time transmission diversity scheme, a space frequency transmission diversity scheme, or a combination of a space time transmission diversity scheme and a space frequency transmission diversity scheme. | 2012-07-26 |
20120189077 | METHOD AND APPARATUS FOR MODE SWITCHING BETWEEN A MULTI-CELL COORDINATED COMMUNICATION MODE AND A SINGLE-CELL MIMO COMMUNICATION MODE - A method for dynamically switching a communication mode includes generating and transmitting first feedback information in accordance with a first communication mode; switching the first communication mode into a second communication mode interlocked with the first communication mode; and generating and transmitting second feedback information in accordance with the second communication mode. The first communication mode is one of a multi-cell coordinated multi-point (CoMP) communication mode and a single-cell multi-input multi-output (MIMO) communication mode, and the second communication mode is the other of the multi-cell coordinated multi-point (CoMP) communication mode and the single-cell multi-input multi-output (MIMO) communication mode. The switching step can be performed without signaling from a base station. | 2012-07-26 |
20120189078 | DUAL POLARIZATION ANTENNA AND METHOD FOR TRANSMITTING AND RECEIVING SIGNAL USING THE SAME - The present invention relates to a general active array antenna apparatus capable of environmentally and temporally controlling radio frequency (RF) polarization resource necessary for wireless communication in order to improve communication quality and increase communication capacity. The antenna according to the present invention has a form of an active array antenna element, wherein each active array antenna element has a structure in which it may generate orthogonal dual polarizations and includes two input terminals and output terminals. An end orthogonal dual polarization antenna is connected to a polarization control apparatus that may process analog or digital signals, and the polarization control apparatus is controlled by or communicate with an antenna main controlling apparatus performing a polarization control algorithm. Ultimately, an object of this antenna apparatus is to improve communication quality and increase communication capacity. | 2012-07-26 |
20120189079 | LOW DENSITY PARITY CHECK (LDPC) CODING FOR A 32k MODE INTERLEAVER IN A DIGITAL VIDEO BROADCASTING (DVB) STANDARD - A data processing apparatus communicates data bits on a predetermined number of sub-carrier signals of an Orthogonal Frequency Division Multiplexed (OFDM) symbol. The data processing apparatus comprises a parity interleaver operable to perform parity interleaving on Low Density Parity Check (LDPC) encoded data bits obtained by performing LDPC encoding according to a parity check matrix of an LDPC code including a parity matrix corresponding to parity bits of the LDPC code, the parity matrix having a stepwise structure, so that a parity bit of the LDPC encoded data bits is interleaved to a different parity bit position. A mapping unit maps the parity interleaved bits onto data symbols corresponding to modulation symbols of a modulation scheme of the OFDM sub-carrier signals. | 2012-07-26 |
20120189080 | MULTIPLE ANTENNAS TRANSMIT DIVERSITY SCHEME - A method from transmitting data via multiple antennas. The method contemplates modulating data to be transmitted into a plurality of modulated symbols, encoding each pair of modulated symbols from among said plurality of symbols in accordance with a transmission diversity scheme to result in a plurality of 2 by 2 matrices, with each 2 by 2 matrix corresponding to each pair of modulated symbols, orthogonally spreading the plurality of 2 by 2 matrices to generate an output matrix, and transmitting the symbols in the output matrix via a plurality of antennas by using either a space time transmission diversity scheme, a space frequency transmission diversity scheme, or a combination of a space time transmission diversity scheme and a space frequency transmission diversity scheme. | 2012-07-26 |
20120189081 | TRANSMISSION CIRCUIT AND COMMUNICATION APPARATUS USING POLAR MODULATION METHOD - Provided is a transmission circuit which can adjust a difference between signal delay amounts in the amplitude path and the phase path with a low power consumption. An amplitude modulation section | 2012-07-26 |
20120189082 | BASE STATION, MULTI-ANTENNA COMMUNICATION SYSTEM AND COMMUNICATION METHOD THEREOF - A User equipment selecting first user equipment in a mode of precoding transmission and second user equipment in a mode of diversity transmission; a parameter determining a modulation mode, the number of transmission layers and a precoding matrix according to channel quality information, precoding matrix information and number of transmission layers sent from the first user equipment and channel quality information and number of transmission layers sent from the second user equipment; according to the modulation mode and the number of transmission layers, generating first and second symbol sequence from first and second source data; hierarchically modulating the first and the second symbol sequence to generate a mixed symbol sequence; layer mapping and precoding for the mixed symbol sequence to generate transmission signals; and transmitting the precoding matrix and the number of transmission layers to the second user equipment; sending the transmission signals to the first and second user equipments. | 2012-07-26 |
20120189083 | Interference Cancellation Based On Interfering Link IL Signal Quality And Related Methods And Devices - A target link signal may be received at a receiving device with the target link signal being received in a received signal also including an interfering link signal. A quality of the interfering link signal in the received signal may be estimated at the receiving device to provide an estimated interfering link signal quality. One of a plurality of interference cancellation techniques may be selected responsive to the estimated interfering link signal quality, and an interference cancellation signal may be generated using the selected one of the plurality of interference cancellation techniques. Information of the interference cancellation signal may be incorporated in the received signal. Responsive to incorporating information of the interference cancellation signal in the received signal, the received signal may be demodulated to provide a demodulated target link signal, and the demodulated target link signal may be decoded to provide a target link bit stream. | 2012-07-26 |
20120189084 | SYSTEMS AND METHODS FOR SELECTING DIGITAL CONTENT CHANNELS USING LOW NOISE BLOCK CONVERTERS INCLUDING DIGITAL CHANNELIZER SWITCHES - Systems and methods in accordance with embodiments of the invention include converting satellite signals to an intermediate frequency signal for content decoding, and selecting modulated digital data within the satellite signals for content decoding using digital signal processing. One embodiment includes a system configured to select at least one content channel from an input signal including a plurality of content channels modulated onto a carrier, the system including: a digital channelizer switch including: a high speed analog to digital converter configured to digitize an intermediate frequency signal; a digital channelizer configured to digitally tune a content channel from the digitized intermediate frequency signal; and a high speed digital to analog converter configured to generate an analog output signal using the content channel digitally tuned from the digitized intermediate frequency signal by the digital channelizer. | 2012-07-26 |
20120189085 | MULTI-SYMBOL PHASE OFFSET ESTIMATION - Receivers typically detect the presence of a pilot tone, transmitted as part of an RF signal, and use the pilot tone as a reference to detect symbols in the received RF signal. However, improper synchronization between the transmitter and the receiver units can result in timing offset and carrier frequency offset in the digitized received RF signal, impair the orthogonality between OFDM sub-carriers, and cause inter-carrier interference. Phase offsets caused by carrier frequency offset and timing offset can also degrade receiver performance. Functionality can be incorporated to estimate the phase offset over multiple symbols. Estimating the phase offset over multiple symbols in the received RF signal can lower the error rate. Correcting the phase offset in the received RF signal can ensure accurate sampling of the received signal, accurate channel estimates, and accurate decoding of the digitized received signal. This can minimize receiver performance degradation. | 2012-07-26 |
20120189086 | SERDES JITTER TOLERANCE BIST IN PRODUCTION LOOPBACK TESTING WITH ENHANCED SPREAD SPECTRUM CLOCK GENERATION CIRCUIT - A system for controllably generating jitter in a serial data stream includes a frequency generator and first and second mixers. The frequency generator is configured to output in-phase and quadrature local oscillator signals with a local oscillator frequency of at least about 5 MHz. The local oscillator frequency varies between a selectable minimum frequency and a selectable maximum frequency. The first mixer is configured to mix a fixed frequency clock signal with the in-phase local oscillator signal to output a first mixer output. The second mixer is configured to mix the fixed frequency clock signal with the quadrature local oscillator signal to output a second mixer output. An adder is configured to add the first and second mixer outputs to produce a frequency-modulated clock signal with a frequency that is about the sum of the fixed frequency and the local oscillator frequency and includes a periodic jitter. | 2012-07-26 |
20120189087 | OSCILLATION POWER RANGE MONITOR AND METHOD OF CHECKING SOUNDNESS THEREOF - An oscillation power range monitor has: an input signal processing section that calculates a normalized cell value from LPRM signals input from local power range monitors; a soundness checking basic signal generating section that generates a simulated cell value that is variable on a time series basis; and a trip determining section that receives the normalized cell value and the simulated cell value respectively from the input signal processing section and the soundness checking basic signal generating section as input, compares the normalized cell value and the simulated cell value with a determination threshold value and outputs a scram trip signal when either of them exceeds the determination threshold value. | 2012-07-26 |
20120189088 | METHOD FOR DETERMINING THE ISOTOPE RATIO OF FISSILE MATERIAL - A method for determining isotope ratio of fissile material having a main isotope and at least one impurity isotope, including: measurement of net areas, at respective energies, of gamma peaks of the fissile material; measurement of the reference total absorption efficiencies at the energies; calculation of the total efficiency transfers of the fissile material; and calculation of the isotope ratio of fissile material. | 2012-07-26 |
20120189089 | METHOD OF OPERATING A PRESSURIZED-WATER NUCLEAR REACTOR ALLOWING SAME TO PASS FROM A PLUTONIUM-EQUILIBRIUM CYCLE TO A URANIUM- EQUILIBRIUM CYCLE AND CORRESPONDING NUCLEAR FUEL ASSEMBLY - A method is provided for operating a nuclear reactor. The method includes operating the nuclear reactor for at least one plutonium equilibrium cycle during which the core contains plutonium-equilibrium nuclear fuel assemblies; subsequently, operating the reactor for transition cycles, at least some of the plutonium-equilibrium nuclear fuel assemblies being progressively replaced with transition nuclear fuel assemblies and then with uranium-equilibrium nuclear fuel assemblies; and then operating the nuclear reactor for at least one uranium equilibrium cycle. | 2012-07-26 |