11th week of 2012 patent applcation highlights part 33 |
Patent application number | Title | Published |
20120063453 | MULTICAST TREE DISCOVERY USING 802.1ag - Methods and apparatus provide for a network device(s) employing tree tracer processing of a data packet(s) and/or a response(s) in order to discover and graphically represent all the paths within a hierarchical tree of network devices for multicast traffic flows. Specifically, a first network device receives a data packet. The data packet provides a multicast target MAC address. The first network device forwards the data packet to a plurality of network devices, where each of the plurality of the network devices belong to a multicast group identified according to the multicast target MAC address. Based on receipt of the data packet, the first network device generates and transmits a first response to a source of the data packet. The first response indicates a placement of the first network device with respect to a hierarchical tree of the plurality of network devices belonging to the multicast group. | 2012-03-15 |
20120063454 | Apparatus and method in a system for multicast data transfers over an interconnected bus - The present invention presents a system and method for providing multicast data transfers in a system with Interconnected data busses of at least two Subsystems. | 2012-03-15 |
20120063455 | DIGITAL BROADCASTING SYSTEM AND DATA PROCESSING METHOD - A method of processing broadcast data in a broadcast transmitting system includes Reed-Solomon (RS) encoding and Cyclic Redundancy Check encoding an RS frame payload including mobile service data to build an RS frame, wherein the RS frame payload comprises a plurality of mobile and handheld transport packets; first encoding data of the RS frame with a first encoding code; second encoding signaling data with a second encoding code, wherein the signaling data include fast information channel (FIC) data and transmission parameter channel (TPC) data, the FIC data including information for rapid mobile service acquisition and the TPC data including a parade identifier for identifying a parade to which a current data group belongs; mapping the first encoded data into data groups and adding known data sequences and the second encoded signaling data to each of the data groups; and transmitting a transmission frame including data of the data groups. | 2012-03-15 |
20120063456 | Method and Device for Managing Multicast Groups - A method for managing multicast traffic in a data network, and devices using said method. The hosts store for each multicast group an included source record and an excluded source record, and the network interfaces of the hosts send to the router a message containing information about the included source record and information about the excluded source record. The router also stores for each multicast group an included source record and an excluded source record, and updates them when it receives through its network interface a message from the hosts containing information about an included source list and/or information about an excluded source list. The devices are a router, host equipment and network equipment compatible with the method. | 2012-03-15 |
20120063457 | HOST DEVICE INTERFACE WITH A POINT OF DEPLOYMENT (POD) AND A METHOD OF PROCESSING BROADCAST DATA - A host device interfacing with a point of deployment (POD) and a method of processing broadcast data are disclosed. Herein, an Internet Protocol (IP) physical interface unit receives an Ethernet frame including broadcast data; and a routing engine transforms the Ethernet frame to an IP packet when a destination address included in the Ethernet frame matches with an address of a pod and routs the transformed IP packet to an extended channel connected to the POD. Accordingly, it is possible to protect contents using a conditional access provided by the existing cable card and process broadcast data received on all types of transmission protocols including an IP protocol over a wired/wireless network using a channel provided for connection between the existing cable card and the host device. | 2012-03-15 |
20120063458 | MULTIPLE VIRTUAL MACHINES SHARING A SINGLE IP ADDRESS - A method and apparatus allow multiple virtual machines to share the same IP address on an external network address space. The virtual machines reside on one or more physical host computer systems. A virtual network manager handles network traffic from a physical interface on the host computer and forwards network data to the appropriate virtual machine based on a destination port number. Data packets on the external network each have a destination and source port number. The virtual network manager uses a port range table that associates each virtual machine with a range of destination port numbers for incoming data packets. Each of the virtual machines is assigned a unique destination port range in the port range table and incoming data traffic on the external network is routed to the receiving virtual machines based on the destination port number in the data packet. | 2012-03-15 |
20120063459 | PACKET ROUTING - An embodiment may include circuitry to determine, at least in part, at least one first output to which to route at least one packet, based, at least in part upon, a first output determination and a second output determination. The first output determination may select at least one second output based at least in part upon at least one deterministic output selection algorithm. The second output determination may select at least one third output based at least in part upon at least one pseudo-random output selection algorithm. The at least one pseudo-random output selection algorithm may be based, at least in part, upon a counter value. Many modifications, variations, and alternatives are possible without departing from this embodiment. | 2012-03-15 |
20120063460 | METHOD AND A DEVICE FOR CONTROLLING ADVERTISING OF ROUTING DATA - A method for controlling advertising of routing data to neighbor routers is presented. A list of prefixes is maintained ( | 2012-03-15 |
20120063461 | Method Of Routing A Packet - The invention concerns a method of routing a packet in a packet switching network, and a corresponding router ( | 2012-03-15 |
20120063462 | METHOD, APPARATUS AND SYSTEM FOR FORWARDING VIDEO DATA - The present disclosure relates to the field of video transmission, and discloses a method, an apparatus, and a system for forwarding video data. A network device receives and buffers a media stream, resolves the buffered media stream, obtains Transport Stream (TS) packets in the media stream, and evaluates and identifies a visual sensitivity priority of each TS packet; discards a TS packet of low visual sensitivity, and re-capsulates a TS packet of high visual sensitivity into a new media stream; and sends the re-encapsulated new media stream to a user equipment. The network device is enabled to discard the TS packet of low visual sensitivity in the media stream, which reduces duration of a fast channel change. | 2012-03-15 |
20120063463 | Packet aligning apparatus and packet aligning method - A packet aligning apparatus includes a packet analyzing section configured to receive a reception packet, and extract a sequence number contained in the reception packet; a packet storage section; a write control section configured to determine whether the reception packet is stored in the packet storage section based on the extraction sequence number or transferred to a subsequent block; an expectation managing section configured to generate expectation data which indicates the sequence number of the packet which should be transferred next to the subsequent block, as the expectation; and a read control section configured to read a group of storage packets stored in the packet storage section, to transfer to the subsequent block. The write control section compares the extraction sequence number and the expectation, stores the reception packet in the packet storage section when the extraction sequence number is larger than the expectation. | 2012-03-15 |
20120063464 | PAGING CONTROL IN COMMUNICATION NETWORKS - This disclosure relates to a system and method for providing a mechanism control page requests sent in a wireless communication network. The paging control mechanism can be implemented in a gateway through a combination of hardware and software to determine whether packets received at a gateway trigger a page. The packets received at the gateway are intended for user equipment that is indicated to be in an idle state with no bearer connection. The paging mechanism controls paging when paging requests need to be sent. In some communication networks, page requests can be sent that are not needed because a bearer connection or link is in the process of being established. The control can be asserted by adding intelligence to the gateway to determine—on receipt of downlink data or signaling—how to proceed based on the state of the user equipment and the bearer connection. | 2012-03-15 |
20120063465 | ACCESS NETWORK DUAL PATH CONNECTIVITY - A transport network employs dual homing to an access network to provide connectivity from multiple network switches. Dual homing is a mechanism by which an access network employs pair of switches in the transport network as if it were connecting to a single device. Conventional arrangements for defining multiple paths from a transport network to an access network suffer from the shortcomings of potential routing loops, increased hops to the access network, and inability or inconsistency with forwarding to different types of access networks, and may involve redirecting traffic absent faults in the access network. The dual homed network switches identify the type of access network and perform switching logic corresponding to the access network type to provide comprehensive dual-homed support to the access network independently of the type of transport employed in the access network, and employ redirection only if there is a fault in the access network. | 2012-03-15 |
20120063466 | Specifying Priority On a Virtual Station Interface Discovery and Configuration Protocol Response - An apparatus comprising an Edge Virtual Bridging (EVB) bridge coupled with an EVB station wherein the EVB bridge is configured to communicate to the EVB station a Filter Information (Info) field of a virtual station interface (VSI) discovery and configuration protocol (VDP) Associate Response message, and wherein the Filter Info field specifies a default Priority Code Point (PCP) value associated with at least one or all of a plurality of VID values carried by that VDP TLV Response. | 2012-03-15 |
20120063467 | HIERARCHICAL PACKET SCHEDULING - A packet scheduler may include logic configured to receive packet information. The packet scheduler may include logic to receive an operating parameter associated with a downstream device that operates with cell-based traffic. The packet scheduler may include logic perform a packet to cell transformation to produce an output based on the operating parameter. The packet scheduler may include logic to use the output to compensate for the downstream device. | 2012-03-15 |
20120063468 | ELECTRONIC DEVICE WITH NETWORK CONNECTION FUNCTIONALITY AND METHOD APPLIED TO THE ELECTRONIC DEVICE - An electronic device with network connection functionality includes a transceiver chip and a processing circuit. The transceiver chip is utilized for processing a data corresponding to a physical (PHY) layer. The processing circuit is externally connected to the transceiver chip, for processing a data corresponding to a media access control (MAC) layer. When the transceiver chip receives a designated packet, the transceiver chip generates a notification signal to notify at least one portion of the processing circuit to be switched from a first operating mode to a second operating mode. | 2012-03-15 |
20120063469 | SCHEDULING DEVICE AND SCHEDULING METHOD - Provided are a scheduling device and a scheduling method, in which the amount of signaling of frequency resource allocation information can be reduced while the system throughput is maintained. In a base station device ( | 2012-03-15 |
20120063470 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD AND INFORMATION PROCESSING PROGRAM - An information processing apparatus includes a receiving part receiving a packet from a communication line; an arithmetic processing part configured to stop an operation in an energy conservation mode, a filter part configured to allow a response required packet to pass through the filter part; a packet retaining part retaining the packet passing over the filter part; and a power source administrating part activating the arithmetic processing part by supplying electric power when the packet is received by the receiving part, wherein if the packet retaining part retains an incomplete packet at a time of activating the arithmetic processing part, the arithmetic processing part generates a packet information piece associating the incomplete packet and a corresponding complete packet as a list and stores the packet information piece to a list storing part. | 2012-03-15 |
20120063471 | Public Cavity Input Multiplexer - The present invention relates to a public cavity input multiplexer that is used to divide broadband signals into multi-channel narrowband signals according to the frequency and includes a public cavity and at least two channel filters. The public cavity is a broadband resonator that is used to input broadband signals, and is coupled with each of the channel filters respectively. In the input multiplexer of the present invention, no electric cable or waveguide and circulator are used for connection. The integrated design is achieved by establishing the public cavity and the channel filter, which reduces volume and mass, avoids the errors caused by influence on the circulator due to temperature change, enhances reliability, saves cost, and improves the electric performance. The design of the public cavity makes the input coupling accurate to calculate, convenient tuning and optimizes the consistency of channels. | 2012-03-15 |
20120063472 | METHOD FOR PROCESSING DISTRIBUTED DATA HAVING A CHOSEN TYPE FOR SYNCHRONIZING COMMUNICATION NODES OF A DATA PACKET NETWORK, AND ASSOCIATED DEVICE - A method is intended for processing distributed data of a chosen type in a data packet network comprising communication nodes (N | 2012-03-15 |
20120063473 | HIGH QUALITY TIMING DISTRIBUTION OVER DSL WITHOUT NTR SUPPORT - A method and system in which a Digital Subscriber Line Access Multiplexer (DSLAM) that is part of a DSL (Digital Subscriber Line) system is able to provide synchronous services to end user equipment connected to the DSLAM via a DSL link and Customer Premises Equipment (CPE). A sniffer device having direct or indirect access to a Primary Reference Clock (PRC) of the DSL system calculates the phase difference between the PRC and the DSLAM's Local Timing Reference (LTR). The phase difference is sent to the CPEs requiring accurate reference clock frequency. The CPEs are able to derive the PRC from the phase difference information transmitted by the sniffer device thus enabling synchronous end user equipment operation. | 2012-03-15 |
20120063474 | Low White Frequency Noise Tunable Semiconductor Laser Source - A low white frequency noise tunable semiconductor laser source is presented. The laser source includes a single-mode semiconductor laser assembly which generates a laser beam having a tunable frequency over a spectral range of interest. An optical filter is provided in the path of the laser beam. The optical filter has multiple spectral features distributed over the entire spectral range of interest. Each spectral feature has a narrow spectral range. A locking mechanism is further provided and is controllable for locking a spectral alignment between the frequency of the laser beam and any selected one of the spectral features of the optical filter. | 2012-03-15 |
20120063475 | NONLINEAR OPTICAL CRYSTALS AND THEIR MANUFACTURE AND USE - Described are nonlinear optical (NLO) crystals, including aluminum-borate NLO crystals, that have low concentrations of contaminants that adversely affect the NLO crystal's optical properties, such as compounds that contain transition-metal elements and/or lanthanides, other than yttrium, lanthanum, and lutetium. Some NLO crystals with low concentrations of these contaminants are capable of second harmonic generation at very short wavelengths. Also described are embodiments of a method for making these NLO crystals. Some embodiments involve growing a single NLO crystal, such as an aluminum-borate NLO crystal, from a mixture containing a solvent that is substantially free of harmful contaminants. The described NLO crystals can be used, for example, in laser devices. | 2012-03-15 |
20120063476 | OPTICAL WAVELENGTH COMB GENERATOR DEVICE - The present application relates to comb frequency generator devices generally and more particularly to the use of comb generators for use in fibre optic communications. More particularly, the application provides a frequency comb generator device. The device comprises a laser ( | 2012-03-15 |
20120063477 | LASER LIGHT SOURCE APPARATUS - Angle adjustment of a wavelength conversion element after assembly is eliminated to achieve a reduction in production cost with a simplified structure. An element holder provided on a base that supports the wavelength conversion element is provided with a mounting reference surface that positions the wavelength conversion element in parallel with an optical axis. The wavelength conversion element has a substantially parallelepiped shape. A bottom surface, which is one of the four surfaces adjacent to an incident surface and an output surface, is in contact with the mounting reference surface, such that a depth direction of inverted polarization regions is substantially orthogonal to the optical axis and the incident surface and the output surface are tilted at a predetermined tilt angle relative to a flat surface orthogonal to the optical axis. | 2012-03-15 |
20120063478 | SURFACE PLASMON BAND-EDGE LASER - Provided is a surface plasmon band-edge laser including a gain media having quantum dots configured to enable laser oscillation using surface plasmon resonance. The gain media has a periodic structure and is formed on a metal surface. | 2012-03-15 |
20120063479 | ALUMINOPHOSPHATE GLASS COMPOSITION - The invention relates to aluminophosphate-based glasses suitable for use as a solid laser medium, which further contains SiO | 2012-03-15 |
20120063480 | PHOTONIC-CRYSTAL SURFACE EMITTING LASER, LASER ARRAY USING THE LASER, AND IMAGE FORMING APPARATUS USING THE LASER ARRAY - A laser structure is provided in which an influence caused by a concave-convex structure on laser characteristics is reduced when the Epitaxial Lateral Overgrowth (ELO) technique is applied to a photonic-crystal surface emitting laser. A height of the mask structure is set such that a reflection peak wavelength of 0-th order diffracted light and a reflection peak wavelength of first-order diffracted light differ from each other for light that enters a concave-convex periodic structure, which is constituted by a first layer and a mask structure, from a photonic crystal. Further, reflection intensity of the 0-th order diffracted light from the concave-convex periodic structure is larger than reflection intensity of the first-order diffracted light from the concave-convex periodic structure at an oscillation wavelength λ. | 2012-03-15 |
20120063481 | PHOTONIC-CRYSTAL SURFACE EMITTING LASER, LASER ARRAY USING THE LASER, AND IMAGE FORMING APPARATUS USING THE LASER ARRAY - A laser structure is provided in which an influence caused by a concave-convex structure on laser characteristics is reduced when the Epitaxial Lateral Overgrowth (ELO) technique is applied to a photonic-crystal surface emitting laser. The laser structure includes a first layer, a second layer, a mask structure, a fourth layer, and a photonic crystal. An optical film thickness of the mask structure is not an integer multiple of a half of an oscillation wavelength λ, and reflectivity taken when laser light enters a multilayer structure including the first layer, the second layer, the mask structure, and the fourth layer from the fourth layer side is lower than reflectivity at an interface between the second layer and the first layer. | 2012-03-15 |
20120063482 | SEMICONDUCTOR LASER ELEMENT, SEMICONDUCTOR LASER DEVICE, AND OPTICAL APPARATUS EMPLOYING THE SAME - This semiconductor laser element includes a semiconductor element layer including an active layer and having an emitting side cavity facet and a reflecting side cavity facet, and a facet coating film on a surface of the emitting side cavity facet. The facet coating film includes a first dielectric layer controlling a reflectance of the emitting side cavity facet and a second dielectric layer. A thickness of the second dielectric layer is set to a thickness defined by m×λ/(2×n) (m is an integer), where a wavelength of a laser beam emitted from the active layer is λ. and a refractive index of the second dielectric layer is n, and is larger than a thickness of the first dielectric layer and at least 1 μm. | 2012-03-15 |
20120063483 | SEMICONDUCTOR LASER ELEMENT, SEMICONDUCTOR LASER DEVICE, AND OPTICAL APPARATUS EMPLOYING THE SAME - This semiconductor laser element includes a semiconductor element layer including an active layer and having an emitting side cavity facet and a reflecting side cavity facet, and a facet coating film on a surface of the emitting side cavity facet. The facet coating film includes a photocatalytic layer arranged on an outermost surface of the facet coating film and a dielectric layer arranged between the photocatalytic layer and the emitting side cavity facet. A thickness of the dielectric layer is set to a thickness defined by m×λ/(2×n) (m is an integer), where a wavelength of a laser beam emitted from the active layer is λ and a refractive index of the dielectric layer is n, and at least 1 μm. | 2012-03-15 |
20120063484 | DISTRIBUTED REFLECTOR IN A MICRORING RESONATOR - A component having a microring resonator and grating, coupled to a waveguide is described. By selection of the grating period, and other parameters such as the grating-waveguide coupling coefficient, an efficient filter may be designed and constructed. The component may be used in passive devices such as add-drop multiplexers or sensors, or in active devices such as lasers. Designs having essentially no response sidelobes, very narrow effective bandwidths, and fast filter roll-offs may permit compact devices to be produced, when compared with typical distributed sampled Bragg grating structures. | 2012-03-15 |
20120063485 | THERMAL ENDURANCE TESTING APPARATUS AND METHODS FOR PHOTOVOLTAIC MODULES - Apparatus and methods for testing the thermal endurance of a glass substrate of a photovoltaic module are provided. The apparatus generally includes, in one embodiment, a testing chamber defining an interior space having an interior atmosphere. A refrigeration unit is operably positioned with the testing chamber to control the interior atmosphere's temperature. A mounting system is positioned within the interior space of the testing chamber and configured to hold the photovoltaic module while exposing the glass substrate of the photovoltaic module. An edge cooling system is positioned in relation to the mounting system such that the photovoltaic module held by the mounting system has a first side edge in contact with the edge cooling system. A light system is also positioned within the interior space of the testing chamber to illuminate the glass substrate of the photovoltaic module. | 2012-03-15 |
20120063486 | TEMPERATURE MEASURING APPARATUS AND TEMPERATURE MEASURING METHOD - The temperature measuring apparatus includes: a light source; a first wavelength-dividing unit which wavelength-divides a light from the light source into m lights whose wavelength bands are different from one another; m first dividing units which divides each of the m lights from the first wavelength-dividing unit into n lights; a transmitting unit which transmits lights from the m first dividing unit to measurement points of an object to be measured; a light receiving unit which receives a light reflected by each of the measurement points; and a temperature calculating unit which calculates a temperature of each of the measurement points based on a waveform of the light received by the light receiving unit. | 2012-03-15 |
20120063487 | Ear Thermometer and Method for Measuring the Body Temperature - An ear thermometer with an infrared sensor, a control unit and a power supply unit in a housing has a wireless communication interface. The wireless communication interface is a WLAN or Bluetooth interface for communication with a base station, in which temperature measurement values are displayed and stored. | 2012-03-15 |
20120063488 | TEMPERATURE SENSOR AND TEMPERATURE SENSOR SYSTEM - Provided is a temperature sensor capable of stably keeping the accuracy of detected temperatures. The temperature sensor of the present invention comprises a sensor element ( | 2012-03-15 |
20120063489 | LOW-RATE LONG-RANGE MODE FOR OFDM WIRELESS LAN - A system for implementing an orthogonal frequency division multiplexing scheme and providing an improved range extension. The system includes a transmitter for transmitting data to a receiver. The transmitter includes a symbol mapper for generating a symbol for each of a plurality of subcarriers and a spreading module for spreading out the symbol on each of the plurality of subcarriers by using a direct sequence spread spectrum. The symbol on each of the plurality of subcarriers is spread by multiplying the symbol by predefined length sequences. The receiver includes a de-spreader module for de-spreading the symbols on each of the plurality of subcarriers. The de-spreader module includes a simply correlator receiver for obtaining maximum detection. The correlator produces an output sequence of a same length as an input sequence and the de-spreader module uses a point of maximum correlation on the output sequence to obtain a recovered symbol. | 2012-03-15 |
20120063490 | CONVOLUTIONALLY ENCODING AND DECODING MULTIPLE DATA STREAMS - A plurality of data streams are convolutionally encoded. Each convolutionally encoded data stream has a particular data rate. The particular data rate of each data stream is adjusted so that an adjusted data rate of that data stream matches a data rate of a CDMA transmission. When the particular data rate of one of the data streams is below the data rate of the CDMA transmission, data of the one data stream is repeated to match the data rate of the CDMA transmission. The adjusted data rate data streams is transmitted as the CDMA transmission. The adjusted data streams are transmitted together in the CDMA transmission and the CDMA transmission is quadrature modulated. | 2012-03-15 |
20120063491 | SPREAD SPECTRUM SIGNAL RECEIVER, METHOD FOR MULTIPATH SUPER-RESOLUTION THEREOF, AND RECORDING MEDIUM THEREOF - A spread-spectrum signal receiver, a multipath signal super-resolution method thereof, and a recording medium thereof are disclosed. Using a least-squares based iterative multipath super-resolution (LIMS) algorithm, the spread-spectrum signal receiver accurately resolves multipath signals in a multipath channel environment so as to extract necessary information such that a rake receiver tracks the multipath signals more accurately. Since the LIMS technique has high resistance against noise and require less computation, it may be used to resolve the multipath signals in real time and to extract a first arrival path signal of a first arrival signal and may be easily implemented offline. | 2012-03-15 |
20120063492 | METHOD AND APPARATUS OF OBTAINING TIMING IN A REPEATER - Methods and apparatuses are provided that include a mobile station modem (MSM) embedded in a repeater for enhancing repeater functionality. The MSM can determine a timing of a base station based on one or more signals received therefrom. Using the timing, the repeater can align timing to that of the base station, determine cyclic prefix of the received signals, cancel echo from received signals, switch between receiving uplink and downlink signals, transmit PRSs according to the timing, and/or the like. | 2012-03-15 |
20120063493 | TRANSMISSION RATE CONTROL METHOD, TRANSMISSION UNIT, AND COMMUNICATION SYSTEM - A transmission unit includes: transmission rate control means for controlling a transmission rate; first transmission error detecting means for detecting data loss caused due to congestion in a transmission network; and second transmission error detecting means for detecting data loss (for example, packet loss) caused due to data error in the communication network. In the transmission unit, the transmission rate control means controls the transmission rate separately for a case where the first transmission error detecting means has detected data loss and a case where the second transmission error detecting means has detected data loss caused due to data error. | 2012-03-15 |
20120063494 | PRECODING CODEBOOK AND FEEDBACK REPRESENTATION - The invention relates to a technical field of multiple-antenna transmission in a wireless communication system. Communication of feedback representation of and generating a codebook suitable for precoding of multiple-antenna transmission is disclosed. An example matrix representation of precoding of a first number of antenna ports comprises precoding sub-matrices of less antenna ports. | 2012-03-15 |
20120063495 | CONFIGURABLE LOAD IMPEDANCE FOR POWER AMPLIFIER PRE-DISTORTION CALIBRATION - An integrated circuit radio transceiver and method therefor includes an integrated circuit radio transceiver operable to provide specified gain levels and transmit path filter responses to correspond with a selected power spectral density mask. Changes in gain may be provided solely digital gain changes or may include analog gain module gain changes. A transmitter selects from one of at least three masks to reduce or eliminate spectral regrowth out of band to satisfy EVM requirements. Circuitry is provided to allow a transceiver to determine in advance what pre-distortion compensation settings are required for the various gain settings. | 2012-03-15 |
20120063496 | Wireless Transmitters - Transmitter circuits for generating baseband signals having low receiver-band noise are disclosed. In one embodiment, the transmitter circuit comprises an active filtering-and-amplifying component comprising a first input configured to receive a first input signal, and a first output configured to output a first output signal. The transmitter circuit further comprises a passive filtering component comprising a second input connected to the first output and configured to receive the first output signal, a passive pole arrangement comprising a number of switchable resistance elements and a capacitance element connected across the plurality of switchable resistance elements, and a second output configured to output a second output signal having reduced noise as compared to the first output signal. The transmitter still further comprises a number of feedback loops connecting the passive filtering component to the first input. | 2012-03-15 |
20120063497 | Systems And Methods for Implementing Application Profiles and Device Classes in Power Line Communication (PLC) Environments - Systems and methods for application profiles and device classes in power line communications (PLCs) are described. In some embodiments, a PLC device may include a processor and a memory coupled to the processor. The memory may be configured to store program instructions, which may be executable by the processor to cause the PLC device to communicate with a higher-level PLC apparatus over a power line using a frequency band. The frequency band may be selected based upon an application profile and/or a device class associated with the PLC device. In some implementations, the higher-level PLC apparatus may include a PLC gateway or a data concentrator, and the PLC device may include a PLC modem or the like. Examples of application profiles include access communications, in-premises connectivity, AC charging, and/or DC charging. Device classes may represent a minimum communication data rate and/or an operating frequency band restriction of the PLC device. | 2012-03-15 |
20120063498 | HIGHLY FLEXIBLE AND EFFICIENT MAC TO PHY INTERFACE - A plurality of media access controllers (MACs) are time division multiplexed with one or more serializer/deserializer (SerDes) devices, wherein there are more MACs than SerDes devices and/or a single multi-rate Ethernet MAC is able to communicate with a multi-rate PHY spanning speeds from 10 megabits per second to 10 gigabits per second using the same framing mechanism and structure. | 2012-03-15 |
20120063499 | Line Testing - Embodiments related to line testing are described and depicted. A digital subscriber line testing apparatus comprises a plurality of resistors and a switching device. The switching device comprises first and second signal inputs to couple the switching device to a signal generator output, and a plurality of wire terminals. The switching device is configured to switch the plurality of resistors into a first switching state and a second switching state. | 2012-03-15 |
20120063500 | System and Method for Channel State Information Feedback in Wireless Communications Systems - A system and method for channel state information feedback in wireless communications systems are provided. A method for reporting channel information includes determining, at a user equipment, a channel information type for first channel information to be reported to a communications controller, determining the first channel information conditioned on previously reported channel information and on the channel information type, and reporting the first channel information, the channel information type, or a combination thereof, to the communications controller. | 2012-03-15 |
20120063501 | STORING DATA RELATING TO CABLES - A cable adapter apparatus ( | 2012-03-15 |
20120063502 | DIGITAL BROADCAST TRANSMITTER, DIGITAL BROADCAST RECEIVER, AND METHODS FOR CONFIGURING AND PROCESSING STREAMS THEREOF - A method for processing a stream of a digital broadcast transmitter, the digital broadcast transmitter, a method of processing a stream of a digital broadcast receiver, and the digital broadcast receiver are provided. The method includes: configuring a stream including a slot to which mobile data is allocated; and encoding and interleaving the configured stream and outputting the encoded and interleaved stream. Each slot of the stream includes signaling data, and the signaling data includes a slot indicator indicating a type of a slot, and may include at least one of a backward training indicator and a forward training indicator according to a value of the slot indicator. Accordingly, information on an adjacent slot is efficiently used. | 2012-03-15 |
20120063503 | Methods and apparatus for orthogonal modulated signals - Methods and corresponding systems for providing and demodulating an orthogonal modulated signal where demodulation includes separating a sampled orthogonal modulated signal into in phase and quadrature samples, deriving first and second equalizer coefficients based on corresponding in phase and quadrature samples and further, respectively, based on a first and second training sequence, programming a first plurality of equalizer filters with the first equalizer coefficients and a second plurality of equalizer filters with the second equalizer coefficients; and processing, after programming with first and second coefficients, the in phase samples and the quadrature samples through a first and second plurality of equalizer filters to provide demodulated symbols. | 2012-03-15 |
20120063504 | SYSTEM AND METHOD FOR CRYSTAL OSCILLATOR FREQUENCY TUNING - An oscillator may include a crystal resonator, an inverter coupled in parallel with the crystal resonator, a first switched capacitor coupled to a first terminal of the crystal resonator, a second switched capacitor coupled to a second terminal of the crystal resonator, a control module configured to output a periodic dithering signal, the periodic dithering signal having a first pulse width based on a desired frequency of oscillation for the oscillator, and a delay module configured to communicate a first periodic enable signal to enable the first switched capacitor and a second periodic enable signal to enable the second switched capacitor. At least one of the first periodic enable signal and the second periodic enable signal may have a second pulse width greater than the first pulse width. The second periodic enable signal may be phase delayed relative to the first periodic enable signal by a non-zero delay. | 2012-03-15 |
20120063505 | POWER TRANSMITTER AND WIRELESS POWER TRANSMISSION SYSTEM - A power transmitter | 2012-03-15 |
20120063506 | TECHNIQUES ENABLING VIDEO SLICE ALIGNMENT FOR LOW-LATECY VIDEO TRANSMISSIONS OVER MMWAVE COMMUNICATIONS - An embodiment of the present invention provides an apparatus, comprising, a transceiver adapted for low-latency video transmissions over mmWave communications by using a slice alignment indication field in an audio/video protocol adaptation layer (A/V PAL) packet header to indicate whether a payload is aligned at a slice boundary and thus does not need parsing at a sink. | 2012-03-15 |
20120063507 | SYSTEM AND METHOD FOR REMOTE PRESENTATION PROVISION - The present invention includes a method for delivering a composite video. A computing device requests a composite video configured to play on the computing device, wherein the composite video comprises at least two assets. The computing device receives information associated with the at least two assets, Based on the received information, the computing device determines characteristics associated with the at least two assets. The computing device measures its bandwidth capabilities. Based on the characteristics and the computing device bandwidth, the computing device calculates delivery requirements associated with each of the at least two assets. A video player buffer associated with the computing device receives the at least two assets. Based on the received information, the computing device assembles the at least two assets into the composite video. Based on the delivery requirements, the computing device configures the video player buffer, and the computing device plays the composite video. | 2012-03-15 |
20120063508 | TRANSMITTING APPARATUS, TRANSMITTING METHOD, RECEIVING APPARATUS, RECEIVING METHOD, PROGRAM, AND BROADCASTING SYSTEM - A broadcasting system includes: a transmitting apparatus transmitting contents, and a receiving apparatus receiving the contents transmitted thereto. The transmitting apparatus includes a trigger information generating section, an encoding section, a multiplexing section, and a sending section. The receiving apparatus includes a receiving section, a multiply separating section, a decoding section, and a control section. | 2012-03-15 |
20120063509 | Reformatting Data to Decrease Bandwidth Between a Video Encoder and a Buffer - A reference picture buffer may supply an asymmetric macroblock to a video encoder to improve the bandwidth between the encoder and buffer. The macroblock width may be sized to match the minimum burst width of the buffer. The size of the macroblock may be kept unchanged by reducing the macroblock height. | 2012-03-15 |
20120063510 | VIDEO BIT-RATE CONTROL - This document relates to video transport systems and in particular, though not exclusively, where several compressed or encoded video services are multiplexed into a fixed bit rate transmission stream. There is provided a method of allocating bit-rates for video services in a transport channel. The method comprises receiving user defined weighting parameters for a number of video services ( | 2012-03-15 |
20120063511 | APPARATUS FOR ENCODING AND DECODING HEADER DATA IN PICTURE SIGNAL TRANSMISSION - A picture decoding method and apparatus for decoding a bit stream, the bit stream being compatible with MPEG 1 moving picture video standard. The method includes receiving, via an input terminal, from a bit stream that includes extension data added in a header of a picture layer of the bit stream when the header includes control data that is newly added in MPEG 2 standard format, the extension data of an anterior header of the picture layer. The method also includes decoding the bit stream in the picture layer using the extension data of an anterior header of the picture layer when an extension start code indicating the beginning of the extension data of the current header is not received from the bit stream. | 2012-03-15 |
20120063512 | VIDEO CODING AND DECODING METHOD USING WEIGHTED PREDICTION AND APPARATUS FOR THE SAME - A video coding and decoding method using a weighted prediction and an apparatus for the same are provided. The video coding method includes generating a predicted image for a present block; generating a weighted prediction factor which is a scaling factor of the predicted image that minimizes the difference between the present block and the predicted image; generating a weighted prediction image by multiplying the predicted image by the weighted prediction factor; and coding a residual signal generated by subtracting the weighted prediction image from the present block. | 2012-03-15 |
20120063513 | SYSTEM AND METHOD FOR ENCODING VIDEO USING TEMPORAL FILTER - A system and method for encoding a video is disclosed having a plurality of frames with spatially correspondent macroblocks. The method includes selecting a coding mode for each spatially correspondent macroblock, such as intra-frame coding or inter-frame coding. A weighting value is determined for each pixel in the macroblock based on the coding mode of the macroblock or other indication of the correlation of the pixel to spatially corresponding pixels in one or more other frames. A temporal filter uses the weighting values to filter noise from the plurality of frames and the resulting noise-reduced output is used in a predictive reference frame. | 2012-03-15 |
20120063514 | METHOD FOR PERFORMING HYBRID MULTIHYPOTHESIS PREDICTION DURING VIDEO CODING OF A CODING UNIT, AND ASSOCIATED APPARATUS - A method for performing hybrid multihypothesis prediction during video coding of a coding unit includes: processing a plurality of sub-coding units in the coding unit; and performing motion vector derivation of a portion of the sub-coding units. More particularly, the step of performing motion vector derivation of the portion of the sub-coding units further includes: deriving a plurality of motion vectors for multihypothesis motion-compensated prediction of a specific sub-coding unit of the portion of the sub-coding units from at least one other sub-coding/coding unit or by performing motion estimation. The method further includes performing multihypothesis motion-compensated prediction on the specific sub-coding unit according to the plurality of motion vectors, and more particularly, includes utilizing a linear combination of a plurality of pixel values derived from the plurality of motion vectors as a predicted pixel value of the specific sub-coding unit. An associated apparatus is also provided. | 2012-03-15 |
20120063515 | Efficient Coding of Video Parameters for Weighted Motion Compensated Prediction in Video Coding - This disclosure relates to techniques for efficient coding of video parameters for weighted motion compensated prediction in video encoding and decoding. A video coding device may code a video block using weighted motion compensated prediction with respect to prediction data generated based on at least one motion vector and video parameter values. The video parameter values may include scale and/or offset parameter values. The techniques reduce signaling overhead by only signaling video parameter values when the motion vector points to a predefined sub-pixel position of a reference block. The techniques include storing a list of predefined sub-pixels associated with the video parameters. When the motion vector points to a sub-pixel position included in the list of predefined sub-pixels, the video coding device may code the video parameter values. The list of predefined sub-pixels may be signaled to a video decoder at a video coding unit or higher level. | 2012-03-15 |
20120063516 | Motion Estimation in Enhancement Layers in Video Encoding - A method for encoding a video sequence in a scalable video encoder is provided that includes selecting a first search window configuration for coding a current picture of the video sequence in an enhancement layer encoder of the scalable video encoder based on motion vectors generated by a reference layer encoder when encoding the current picture, and coding the current picture in the enhancement layer encoder using the first search window configuration. | 2012-03-15 |
20120063517 | METHOD AND APPARATUS FOR HIERARCHICAL PICTURE ENCODING AND DECODING - A residual picture is decoded first by demultiplexing an input enhancement layer bitstream into one or more bitstreams corresponding to an order of quality layers. Next, a residual picture is restored by independently decoding the bitstream for each quality layer. The restored residual picture is stored in a frame buffer. A finally restored residual picture is output by adding, to the restored residual picture, a picture that has undergone motion compensation in a reference frame within a same enhancement layer. | 2012-03-15 |
20120063518 | DEVICES, METHODS, AND SYSTEMS FOR BUILDING MONITORING - Devices, methods, and systems for building monitoring are described herein. One or more embodiments include a first transceiver coupled to a first phase of a power system of a building and configured to receive and send data over the first phase of the power system, a second transceiver coupled to a second phase of the power system and configured to receive and send data over the second phase of the power system, and a switch coupled to the first and second transceivers of the power system and configured to route data between the first and second transceivers of the power system. | 2012-03-15 |
20120063519 | RECEIVER WITH FEEDBACK CONTINUOUS-TIME DELTA-SIGMA MODULATOR WITH CURRENT-MODE INPUT - In accordance with some embodiments of the present disclosure, a receiver may include a downconverter configured to demodulate a modulated wireless signal to produce a current-mode baseband signal and an analog-to-digital converter (ADC) configured to convert the current-mode baseband signal into a digital output signal. The downconverter may be coupled to the ADC without an intervening filter element. | 2012-03-15 |
20120063520 | SEMICONDUCTOR INTEGRATED CIRCUIT, RADIO COMMUNICATION DEVICE AND TIME TO DIGITAL CONVERTER - According to one embodiment, a semiconductor integrated device includes a digitally controlled oscillator, a counter, a time to digital converter, an adder, and a control signal generator. The time to digital converter includes a frequency-divider, a plurality of impedance elements, and a phase difference detector. The frequency-divider is configured to frequency-divide the oscillation signal to generate a plurality of frequency-divided signals. The plurality of impedance elements is configured to voltage-divide the frequency-divided signals to generate a plurality of delay signals of the oscillation signal. The phase difference detector is configured to output the third digital signal corresponding to the phase difference between the reference signal and the oscillation signal by comparing the reference signal with each of the delay signals. | 2012-03-15 |
20120063521 | FRACTIONAL-N PHASE LOCKED LOOP, OPERATION METHOD THEREOF, AND DEVICES HAVING THE SAME - A fractional-N phase locked loop is provided. The fractional-N phase locked loop includes a phase adjusting circuit detecting a phase difference between a reference clock signal and a feedback clock signal and outputting a plurality of phase clock signals in response to the detected phase difference, a phase selector selecting and outputting one of the plurality of phase clock signals output from the phase adjusting circuit in response to a phase selection signal, a control circuit generating the phase selection signal by using a sigma-delta modulator operation clock signal, which is generated by dividing the selected phase clock signal by each of N or more different integers (N is an integer more than or equal to 2), and a first divider generating the feedback clock signal by dividing the selected phase clock signal by an integer. | 2012-03-15 |
20120063522 | METHOD FOR DIRECTIONAL DIGITAL DATA TRANSMISSION BETWEEN AN AIRCRAFT AND A GROUND STATION - The invention relates to a method for digital and directional data transmission between aircraft and ground stations. In this arrangement data is exchanged digitally and directly, in other words directly by means of directional antennae, between the aircraft and the ground stations. Furthermore, transmission lobes are adapted during flight, and the directional antennae on the aircraft only illuminate regions on the ground that are located at a minimum distance across the flight path of the aircraft. | 2012-03-15 |
20120063523 | COMMUNICATION SYSTEM, INFORMATION TRANSMISSION METHOD, CODE SETTING METHOD, BASE STATION, AND MOBILE STATION - A communication system includes a communication station that converts a value information into a code value based on a corresponding relationship in which a difference between a first value information and a second value information is set to any value equal to or greater than two, where the second value information corresponds to a code value where an error occurs in one bit of the code value corresponding to the first value information. | 2012-03-15 |
20120063524 | SIGNALING SYSTEM WITH ADAPTIVE TIMING CALIBRATION - A signaling system is disclosed. The signaling system includes a first integrated circuit (IC) chip to receive a data signal and a strobe signal. The first IC includes circuitry to sample the data signal at times indicated by the strobe signal to generate phase error information and circuitry to output the phase error information from the first IC device. The system further includes a signaling link and a second IC chip coupled to the first IC chip via the signaling link to output the data signal and the strobe signal to the first IC chip. The second IC chip includes delay circuitry to generate the strobe signal by delaying an aperiodic timing signal for a first time interval and timing control circuitry to receive the phase error information from the first IC chip and adjust the first time interval in accordance with the phase error information. | 2012-03-15 |
20120063525 | ARRAY ANTENNA ARRANGEMENT - A wireless communication system comprising at least one base station in a communication cell, wherein the base station is equipped with at least one array antenna comprising at least two antenna ports which are connected to respective at least two corresponding antenna elements, wherein at least two of the at least two antenna elements have essentially the same polarization. The array antenna is arranged for communication via at least two antenna radiation lobes, each antenna radiation lobe communicating an information stream to at least one user equipment (UE) in the cell, wherein each antenna radiation lobe is individually controllable both in azimuth and elevation, whereby the communication of the information streams is optimized. | 2012-03-15 |
20120063526 | Method and apparatus for transmitting data, and communication system - The present invention discloses a method for transmitting data. In the embodiments of the present invention, whether to send blocking information used to block low priority data sent by an upper layer is determined through monitoring a delay of data during transmission, so as to prevent data overflow in a retransmission buffer of the sending end, thus achieving higher INP protection for the low priority data. Meanwhile, only the low priority data is blocked at this time, therefore, a sending end may further continue receiving high priority data, and mark the high priority data with a flag indicating retransmission is not needed when encapsulating the high priority data, so that a receiving end does not apply for retransmission of the high priority data when receiving the high priority data, thus ensuring the short delay requirement of the high priority data. | 2012-03-15 |
20120063527 | Receiver, Channel State Information Compressing Method, and Computer Program - A receiver receives a signal from a transmitter via communication channels, informs the transmitter of channel state information, and includes a channel correlation value computation unit that computes a correlation value assigned to each channel state information combination; a conversion input data generation unit that determines a channel state information combination having a relatively large correlation based on the correlation value, to be conversion input data; a time-to-frequency region conversion unit that converts the region of the conversion input data from a time region to a frequency region; an information compressing unit that compresses information of a frequency component included in the conversion input data obtained by the time-to-frequency region conversion unit; and a transmitting unit that sends the transmitter, information-compressed data obtained by the information compressing unit and information used for isolating the channel state information items included in the conversion input data. | 2012-03-15 |
20120063528 | SYSTEM AND METHOD FOR POWER CONTROL IN MIMO SYSTEMS - The return channel in a multiple-input and multiple-output (MIMO) communication system is used to provide signal information on an individual-channel basis. In one embodiment, in a controlled factory environment, this information may be used to incrementing up or down the variable gain amplifier and/or the power amplifier of a MIMO transmitter and/or receiver so as to generate a default signal power offset to be used during normal operation. Thereafter, such signal information may similarly be provided via the return channel and used to further adjust the transmit parameters to account for location-specific signal conditions. | 2012-03-15 |
20120063529 | INTER-CELL INTERFERENCE MITIGATION METHOD USING SPATIAL COVARIANCE MATRIX ESTIMATION METHOD FOR INTER-CELL INTERFERENCE MITIGATION OF MIMO ANTENNA OFDM SYSTEM - Disclosed is an inter-cell interference mitigation method using a spatial covariance matrix (SCM) estimation method in a multi-input multi-output (MIMO) orthogonal frequency division multiplexing (OFDM) communication system for mitigating interference between asynchronous cells. The inter-cell interference mitigation method includes extracting a reference symbol (RS) of a received OFDM symbol and performing channel estimation, estimating an initial SCM using the RS signal and the channel estimation result, applying time-domain sinc type weighting to the initial SCM and applying an SCM, and demodulating a data symbol with mitigated inter-cell interference using the channel estimation result and the estimated SCM. By applying time-domain sinc type weighting to SCM estimation, it is possible to reduce an SCM estimation error occurring due to a spectral leakage induced by an abrupt change in a signal at a border point between an effective sub carrier zone and a guard band zone, and a simple design of a moving average filter form for a frequency domain signal can be made instead of frequency-time-frequency domain transformation using an inverse fast Fourier transform (IFFT) and fast Fourier transfer (FFT). | 2012-03-15 |
20120063530 | COMMUNICATION DEVICE - The configuration of a system for conventional MIMO-OFDM transmission is complicated because different phase rotations are applied to respective subcarriers and antennas. Therefore, a system includes: a copy unit that copies a group composed of a predetermined number of symbols and a predetermined number of subcarriers to produce a plurality of groups; a phase rotation unit that applies different phase rotations to the plurality of copied groups; and a plurality of transmitting antennas that transmits, to a receiver, the plurality of respective groups to which the phase rotations have been applied. | 2012-03-15 |
20120063531 | DYNAMIC DIGITAL COMMUNICATION SYSTEM CONTROL - Control of a digital communication system having a plurality of communication lines on which signals are transmitted and received is implemented using a variety of methods and systems. According to one embodiment of the present invention, a method is implemented where the signals are affected by interference during transmission and each of the communication lines has at least one transmitter and at least one receiver. A model is created of the interference characteristics due to the signals carried on the communication lines. Interference characteristics for a line are determined based on the model and actual signals carried on other communication lines different from the line for which the characteristics are being determined. Actual interference is compensated for on the communication line using the determined interference characteristics. | 2012-03-15 |
20120063532 | RECEPTION DEVICE, RECEIVING METHOD, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - The filtering unit ( | 2012-03-15 |
20120063533 | Encoding and decoding using constrained interleaving - Serially-concatenated codes are formed in accordance with the present invention using a constrained interleaver. The constrained interleaver cause the minimum distance of the serial concatenated code to increase above the minimum distance of the inner code alone by adding a constraint that forces some or all of the distance of the outer code onto the serially-concatenated code. This allows the serially-concatenated code to be jointly optimized in terms of both minimum distance and error coefficient to provide significant performance advantages. These performance advantages allow a noise margin target to be achieved using simpler component codes and a much shorter interleaver than was needed when using prior art codes such as Turbo codes. Decoders are also provided. Both encoding and decoding complexity can be lowered, and interleavers can be made much shorter, thereby shortening the block lengths needed in receiver elements such as equalizers and other decision-directed loops. Also, other advantages are provided such as the elimination of a error floor present in prior art serially-concatenated codes. That allows the present invention to achieve much higher performance at lower error rates such as are needed in optical communication systems. | 2012-03-15 |
20120063534 | SIGNAL TRANSMISSION SYSTEM WITH CLOCK SIGNAL GENERATOR CONFIGURED FOR GENERATING CLOCK SIGNAL HAVING STEPWISE/SMOOTH FREQUENCY TRANSITION AND RELATED SIGNAL TRANSMISSION METHOD THEREOF - A signal transmission system includes a first clock signal generator and a second clock signal generator. The first clock signal generator is configured for generating a first clock signal according to clock information derived from a transmitted signal, wherein the transmitted signal is changed in response to a frequency change of a second clock signal, and the first clock signal generator enters a frequency-unlocked state if the second clock signal has a frequency transition from a first frequency to a second frequency during a first time period. The second clock signal generator is configured for generating the second clock signal having the frequency transition from the first frequency to the second frequency during a second time period longer than the first time period such that the first clock signal generator stays in a frequency-locked state during the second time period. | 2012-03-15 |
20120063535 | TRANSMITTING APPARATUS AND RECEIVING APPARATUS - According to one embodiment, a transmitting apparatus includes a generation unit, a division unit, an imparting unit and a transmitting unit. The generation unit generates first control information in accordance with a first information format. The division unit divides the first control information into control information pieces in accordance with information format divisions into which the first information format is divided and which include respective pointer regions, each of the information format divisions having a same data length as a second information format. The imparting unit imparts, to the pointer region of each of the information format divisions, a pointer indicating a wireless communication resource used to transmit one of the control information pieces corresponding to one of the information format divisions other than the each control information format division. The transmitting unit transmits the control information pieces. | 2012-03-15 |
20120063536 | Method and Device for Processing a Digital Complex Modulated Signal Within a Polar Modular Transmission Chain - Method of processing a digital complex modulated signal, comprising performing pre-processing said digital complex modulated signal (DCMS) for obtaining a pre-processed digital complex modulated signal (PPRS) and performing a Cartesian to polar conversion of said pre-processed signal, said pre-processing including analysing the trajectory of said digital complex modulated signal and if said trajectory crosses a region (RAO) around the origin (O) of the complex plane, modifying said digital complex modulated signal such that said pre-processed signal has a modified trajectory avoiding said region. | 2012-03-15 |
20120063537 | Turbo coding having combined turbo de-padding and rate matching de-padding - Turbo coding having combined turbo de-padding and rate matching de-padding. An approach is presented by which a singular module is operable to perform both zero bit de-padding and dummy bit de-padding in accordance with turbo encoding. Zero padding can be performed on an input information stream before undergoing turbo encoding. One or more of the 3 outputs from the turbo encoding module (e.g., systematic bits, parity 1 bits, and parity 2 bits) may then undergo dummy bit padding as well. Thereafter, these 3 streams (some or all of which may have undergone dummy bit padding) undergo sub-block interleaving. After all of these operations have taken place, a singular combined de-padding module that can be employed to perform de-padding any zero padded bits and any dummy padded bits from each of the three streams that have undergone the sub-block interleaving. | 2012-03-15 |
20120063538 | Method for Transmitting an Information Sequence - Methods and apparatus are disclosed for applying successive multi-rank beamforming strategies (e.g., successive precoding strategies) for the design of precoders over a set of parallel channels. Successive beamforming is applied to a narrow band channel model and is also applied for finer quantization of a single beamforming vector (e.g., recursive beamforming). A first embodiment provides the optimal approach with high complexity. An alternative embodiment provides successive beamforming for near optimal precoding selection with medium complexity. A low complexity method for precoder selection is also provided wherein a channel representative matrix for the set of parallel channels is determined and successive beamforming on the calculated channel representative is applied. | 2012-03-15 |
20120063539 | LANE-TO-LANE SKEW REDUCTION IN MULTI-CHANNEL, HIGH-SPEED, TRANSCEIVER CIRCUITRY - Controllable delay circuitry is included in each channel of multi-channel, high-speed, serial transmitter and/or receiver circuitry to compensate for or to at least help compensate for possible skew (different signal propagation time) between the various channels. In systems employing CDR circuitry, the delay circuitry may be at least partly controlled by a signal derived from the CDR circuitry to make the amount of delay effected by the delay circuitry at least partly responsive to changes in data rate detected by the CDR circuitry. | 2012-03-15 |
20120063540 | OFDM SIGNAL TRANSMISSION METHOD AND APPARATUS - An orthogonal frequency division multiplexing (OFDM) signal transmission apparatus which transmits OFDM signals by using a plurality of transmission antennas includes a subcarrier setting device which sets signals for subcarriers so as to use some of the subcarriers of the OFDM signals as pilot subcarriers to transmit pilot signals and use the remaining subcarriers as data subcarriers to transmit data signals, the subcarrier setting device changing polarities of signals for the pilot subcarriers for each transmission antenna. | 2012-03-15 |
20120063541 | METHOD AND DEVICE FOR DETERMINING ESTIMATED VALUES FOR TRANSMITTED SYMBOLS IN A MIMO-OFDM SYSTEM - A method for determining estimated values for data symbols transmitted from at least four transmission antennas of a MIMO transmission system, which are encoded according to the Matrix B transmission mode and weighted with coefficients (v | 2012-03-15 |
20120063542 | Novel Wide Null FOrming System with Beamforming - A novel wide null forming system achieves both wide bandwidth and beam width null through employing an antenna array to receive and transmit signals to which a complex null weight vector, calculated by perturbation program, is applied. The novel wide null forming system includes a multiple-element antenna array for receiving or transmitting signals. Multiple conditioning units matching the number of elements is present to condition the signals for proper reception and analysis, after which a series of complex multiplier processors adds complex weights. After being weighted each constituent beam is combined in an adding processor to form one composite beam for use by the user. | 2012-03-15 |
20120063543 | Transmitted with Quantization Noise Compensation - The invention discloses a transmitter ( | 2012-03-15 |
20120063544 | METHOD AND DEVICE FOR PRE-DISTORTING AN EXCITER AND PREDISTORTION EXCITER - A method for pre-distorting an exciter includes obtaining a characteristic curve of a radio frequency (RF) amplifier, obtaining a first relationship between a gain amplitude correction value and an input power and a second relationship between a gain phase correction value and the input power based on the characteristic curve, obtaining a transmission gain for use in a scan from a magnetic resonance pre-scan, and obtaining the gain amplitude correction value and the gain phase correction value of an input of the exciter based on the input of the exciter, the transmission gain, the first relationship, and the second relationship. An input of the exciter is pre-distorted using the gain amplitude correction value and the gain phase correction value. | 2012-03-15 |
20120063545 | Method and System for Enhancing Efficiency by Modulating Power Amplifier Gain - Aspects of a method and system for enhancing efficiency by modulating power amplifier (PA) gain are presented. Aspects of the system may comprise a PA gain modulator that enables modification of an amplitude of a digital baseband signal. A baseband processor may enable computation of a first gain value based on the modification. The baseband processor may enable computation of a second gain value based on the first gain value. A PA may enable generation of an RF output signal based on the modified digital baseband signal and the second gain value. | 2012-03-15 |
20120063546 | PHASE-LOCKED LOOP CIRCUIT - A voltage-controlled oscillator generates a first signal and a second signal having a phase reverse to that of the first signal. A switch supplies a current signal generated by a first charge pump to a loop filter. A counter counts a cycle number of the second signal included in one cycle period of a reference signal. A second charge pump supplies, to the loop filter, a first current signal having a constant value and a second current signal having a constant value whose polarity is reverse to that of the first current signal. The control circuit controls the switch and the second charge pump based on a comparison between the cycle number of the second signal counted by the counter and a value X. | 2012-03-15 |
20120063547 | RECEIVER AND METHOD FOR DETERMINING A TIME MEASURE DEPENDING ON A TIME OF ARRIVAL OF A PULSE SIGNAL - A receiver for determining a time measure depending on a time of arrival of a pulse signal having a sequence of pulses from a transmitter includes an integrator having a variable and controllable integration window, extending from a starting point to an integrator sampling point, an integrator controller for controlling the integration window in a time-successive way so that the sampling points of successive integration windows are changed by a time delay from a current integration window to a later integration window, wherein the time delay is smaller than half of the integration window, and an output processor for generating the time measure as an indication indicating which later integration window has a sampled integrator value exceeding a threshold or being larger than a sampled integrator value for a timely preceding or timely succeeding integration window. | 2012-03-15 |
20120063548 | DIGITAL RECEIVER AND METHOD - A receiver and method is provided for sigma-delta converting an RF signal to a digital signal and downconverting to a digital baseband signal. The RF signal is split into N phases, as can be accomplished using a sample and hold circuit, and each phase is digitized, as can be accomplished using an analog-to-digital (A/D) sigma-delta converter. Polyphase decimation techniques and demodulation are applied to the phased signals to generate a demodulated digital signal. The demodulated digital signal is further downconverted to the appropriate baseband signal. | 2012-03-15 |
20120063549 | SIGNAL RECEIVING APPARATUS, SIGNAL RECEIVING METHOD AND SIGNAL RECEIVING PROGRAM - A signal receiving apparatus has: a radius identifying section configured to identify a radius representing a distance from an origin on an IQ plane of signal points each corresponding to a symbol obtained from a received signal modulated by adoption of an APSK modulation method; and a parameter outputting section configured to output a control parameter related to a demodulation or decoding process of the received signal on the basis of the identified radius. | 2012-03-15 |
20120063550 | Receiver with Orthogonal Beam Forming Technique - A receiver with orthogonal beam forming technique is achieved that is capable of differentiating different signal components within the received composite signal. An adaptive processor is used to eliminate the signal component whose phase information is known or can be calculated. The phase information of the major component of a signal can be easily acquired by using a limiter. The phase information of other signal components can be acquired by their direction information and other characteristics, such as modulation scheme, etc. Multiple orthogonal beams can be formed by eliminating one unwanted signal component each time by the adaptive processor until all unwanted signal is eliminated. Thus, a composite signal from multiple sources can be broken down into their component signals. | 2012-03-15 |
20120063551 | DIGITAL FREQUENCY LOCKED DELAY LINE - A device includes a signal generator having a delay locked circuit for providing a number of output signals based on an input signal. The output signals have a fixed signal relationship with each other and with the input signal. The signal generator also includes a selector for selecting an enable signal from a range of signals formed by the output signals. The device further includes a transceiver circuit in which the transceiver circuit uses the enable signal for data processing. | 2012-03-15 |
20120063552 | Electro-magnetic Interference Reduction for Switched Signal Systems - In one embodiment, a method receives a pulse width modulation signal. A value that is a function of the pulse width modulation signal is determined. The value is used to modulate a switching frequency of the pulse width modulation signal to generate a modulated pulse width modulation signal. The applied value reduces electro-magnetic interference from tones in the modulated pulse width modulation signal. | 2012-03-15 |