| 18th week of 2011 patent applcation highlights part 38 |
| Patent application number | Title | Published |
|---|
| 20110103377 | Implementing a High Quality VOIP Device - A method is provided for Voice over Internet Protocol (VoIP) devices to communicate over an Internet Protocol (IP) network. The method includes synchronizing the VoIP devices using one or more dual-tone multi-frequency (DTMF) codes over a telephone network, retransmissions of voice packets in bursts, retransmissions of voice packets following a time lag, adjusting the number of retransmissions based on quality of service, retransmission of a missing voice packet identified in a list received from a peer device, discarding low energy voice frames in a jitter buffer to prevent overflow, stopping playout at a low energy voice frame when the jitter buffer is below a minimum buffer size, and selective transmission and retransmission of voice packets based on their energy levels. | 2011-05-05 |
| 20110103378 | INTELLIGENT SOFTPHONE INTERFACE - An interface unit ( | 2011-05-05 |
| 20110103379 | TCP ACK PACKET TRANSMISSION AND RECEPTION METHOD, AND A DEVICE SUPPORTING THE SAME - Disclosed is a broadband wireless network, and more particularly, to a method for transmitting and receiving a TCP ACK packet, and a device supporting the same, wherein the method for transmitting and receiving a TCP ACK packet receiving TCP ACK packets and data packets from an upper layer; creating a MAC PDU by unifying the TCP ACK packet and data packet buffered in the same queue among the received TCP ACK packets and data packets; and transmitting the MAC PDU to a physical layer. | 2011-05-05 |
| 20110103380 | Method and Apparatus for Injecting Information Assets Into a Content Stream - A method and apparatus for transport encoded asset data and content data, multiplexing the transport encoded content data with a plurality of NULL transport packets to provide “place holder” for the asset data transport packets, and replacing the NULL transport packets with asset data transport packets prior to transmitting the multiplexed transport stream to a set top box. | 2011-05-05 |
| 20110103381 | METHOD, AND ASSOCIATED APPARATUS, FOR TRANSITIONING COMMUNICATIONS OF HYBRID ACCESS TERMINAL BETWEEN COMMUNICATION SYSTEMS - A method and apparatus of optimizing transitioning between EVDO and CDMA 1X systems in a hybrid access terminal, the method having the steps of: detecting an EVDO received signal at the hybrid access terminal; and delaying a connection timer at the hybrid access terminal for connecting to the EVDO system. The apparatus being a hybrid access terminal adapted for optimizing transitioning between EVDO and CDMA 1X systems, the hybrid access terminal having a radio subsystem adapted to communicate with a network; a radio processor having a digital signal processor and adapted to interact with the radio subsystem; memory; a user interface; a processor adapted to run user applications and interact with the memory, the radio and the user interface and adapted to run applications, the hybrid access terminal characterized by having means for: detecting an EVDO received signal at the hybrid access terminal; and delaying a connection timer at the hybrid access terminal for connecting to the EVDO system. | 2011-05-05 |
| 20110103382 | METHOD AND APPARATUS FOR FILTERING MULTICAST PORT IDENTIFIER IN GIGABIT-CAPABLE PASSIVE OPTICAL NETWORK (GPON) SYSTEM - Provided is an apparatus for filtering a multicast port identifier, the apparatus including: a processor to receive an Internet Group Management Protocol (IGMP) message from a switching unit, to verify a traffic reception request received from a subscriber terminal based on the IGMP message, and to store a value in a filtering register based on the traffic reception request; and an Optical Network Unit (ONU) Media Access Control (MAC) manager to filter a packet to be forwarded to the subscriber terminal, using a port identifier for traffic forwarding and reception with the subscriber terminal, and using the value of the filtering register indicating an existence of traffic to be forwarded to the subscriber terminal. | 2011-05-05 |
| 20110103383 | TWO DIMENSIONAL LOCATION TRANSPARENCY OF SOFTWARE SERVICES - Provided are methods and systems distributing a data message to an unknown destination device across at least one spatial boundary and at least one administrative domain boundary from an originating device. The system includes at least one distributor module that exists within each administrative domain of a network through which the data message may originate, may terminate or may traverses in route from the originating device to the unknown destination device. Each administrative domain within each of a plurality of equipment platforms has at least one distributor module. The system also includes a domain bridge spanning the at least one administrative domain boundary within an equipment platform of the plurality through which the data message traverses in route to the unknown destination device. The system operates using a network discovery service whereby an advertisement is published for a specific type of data by the unknown destination device. The advertisement is promulgated throughout the network. Each distributor module in the network acts a surrogate for the unknown destination device by accepting the data and relaying it to another surrogate until it arrives at the destination device. The system allows the data to pass through both spatial and administrative barriers automatically. | 2011-05-05 |
| 20110103384 | ROUTING DEVICE AND METHOD OF CONFIGURATION FOR NETWORK NAME RESOLUTION OF SAME - There is provided a routing device configured for operatively interconnecting a first digital data network (DDN) and a second DDN. The routing device comprises a first and second interface for operative connection with the respective first and second DDN and for transferring data packets associated with the first and second DDN. The routing device further comprises a processing system for processing the data packets and for transferring the data packets between the first interface and the second interface based upon address information encoded in the data packets. The processing system is configured with a routing device designation for identifying the routing device and a network address associated with the first DDN. Upon activation of the routing device, the processing system returns the network address in response to a network name resolution request for the routing device designation encoded in one or more first data packets characterized by one or more predetermined network protocols received from the first DDN. | 2011-05-05 |
| 20110103385 | Apparatus and Method for Hardware Payload Header Suppression, Expansion, and Verification - The present invention provides methods for performing payload header suppression (PHS), expansion, and verification in hardware. A PHS verify circuit reads a data packet until it reaches the location where the first byte must be compared to PHS rule verify bytes. Next, all the relevant bytes in the payload header are compared to the PHS vile verify bytes obtained from a payload header suppression rule mask. Upon completion of the compare, a flag is generated to a PHS suppress circuit indicating that verification has passed or failed. For payload headers passing the verification process, the payload header suppress circuit examines the payload header suppression mask to identify one or more bits in the payload header for which an associated byte string is to be suppressed. Next, the associated byte string for each of the identified bits are suppressed to generate a suppressed packet payload header. Finally, a payload header suppression index is added to the suppressed packet payload header. The data packet, including the suppressed packet header and suppression index are then transmitted. Once received, a payload header suppress circuit on the receiver end examines the payload header suppression index to determine if the payload header has been suppressed. For each suppressed payload header, each bit in the payload header is compared to a payload header suppression mask to determine if the bit has been suppressed. Next, for each suppressed bit, a byte string is retrieved from a payload header suppression rule and inserted into the suppressed payload header. | 2011-05-05 |
| 20110103386 | System and Method for Communication of Uncompressed Visual Information Through A Network - DisplayPort micropackets of uncompressed visual information are adapted to conventional network infrastructure with a switch having DisplayPort ports, network ports and a packet converter. The packet converter encapsulates DisplayPort packets for communication through network ports and extracts DisplayPort packets from network packets for communication through DisplayPort ports. An address resolution table associates the switch ports with each other and with a packet converter operation by using a control field that defines the packet converter operation for information received at each port, such as encapsulation, extraction or native switching. | 2011-05-05 |
| 20110103387 | STATEFUL NETWORK ADDRESS TRANSLATION PROTOCOL IMPLEMENTED OVER A DATA NETWORK - A technique is disclosed for synchronizing NAT information stored on different network devices that have been configured to implement a network address translation protocol. Each of the network devices includes a respective NAT data structure configured to store NAT information. The NAT information includes at least one NAT entry relating to a network node engaged in a communication session with at least one other network node. At least one NAT entry in a first NAT data structure is modified. The first NAT data structure is associated with a first NAT network device. A first NAT transaction message is generated which includes information relating to the modifications performed on the first NAT data structure. The first NAT transaction message is transmitted to at least one other NAT network device to thereby cause that device to modify its respective NAT data structure using information from the first NAT transaction message. In this way, synchronization of NAT information stored on each of the network devices may be achieved. | 2011-05-05 |
| 20110103388 | SYSTEM AND METHOD FOR ACHIEVING ACCELERATED THROUGHPUT - Systems and methods for transporting data between two endpoints over an encoded channel are disclosed. Data transmission units (data units) from the source network are received at an encoding component logically located between the endpoints. These first data units are subdivided into second data units and are transmitted to the destination network over the transport network. Also transmitted are encoded or extra second data units that allow the original first data units to be recreated even if some of the second data units are lost. These encoded second data units may be merely copies of the second data units transmitted, parity second data units, or second data units which have been encoded using erasure correcting coding. At the receiving endpoint, the second data units are received and are used to recreate the original first data units. | 2011-05-05 |
| 20110103389 | METHOD AND APPARATUS FOR SWITCHING TRAFFIC BETWEEN VIRTUAL MACHINES - Systems and methods for switching traffic include a physical machine running source and destination virtual machines (VMs). The source VM issues a data unit addressed to the destination VM. The physical machine has a physical network interface in communication with the VMs. The physical network interface transmits a sub-packet, which includes a partial portion of the data unit, over a network while a majority portion of the data unit remains at the physical machine. A network switch on the network receives the sub-packet transmitted by the physical network interface. The network switch performs one or more OSI Layer 2 through Layer 7 switching functions on the sub-packet and returns that sub-packet to the physical network interface. The physical network interface identifies the data unit stored in the memory in response to the sub-packet returned from the network switch and forwards the identified data unit to the destination VM. | 2011-05-05 |
| 20110103390 | SERIALIZED ENFORCED AUTHENTICATED CONTROLLER AREA NETWORK - A system comprises a plurality of nodes; and a hub that is communicatively coupled to each of the plurality of nodes via a plurality of point-to-point links, wherein a priority-based arbitration scheme is used by the plurality of nodes and the hub to communicate over each of the plurality of point-to-point links. When the hub determines that one or more of the plurality of nodes is each transmitting a message having an identification field comprising a first sub-field and a second sub-field, the hub uses the first sub-field to select which node's message should be forwarded to the other nodes based, at least in part, on the priority-based arbitration scheme and forwards the selected node's message as it is received to the other nodes, continuing with the second sub-field of the selected node's message. | 2011-05-05 |
| 20110103391 | SYSTEM AND METHOD FOR HIGH-PERFORMANCE, LOW-POWER DATA CENTER INTERCONNECT FABRIC - A system and method are provided that support a routing using a tree-like or graph topology that supports multiple links per node, where each link is designated as an Up, Down, or Lateral link, or both, within the topology. The system may use a segmented MAC architecture which may have a method of re-purposing MAC IP addresses for inside MACs and outside MACs, and leveraging what would normally be the physical signaling for the MAC to feed into the switch. | 2011-05-05 |
| 20110103392 | System and Method to Support Secondary Channel Connection from Residential Gateway to Service Provider Network - The present disclosure is directed to an apparatus and method for providing service to a residential gateway. The method includes detecting a service disruption associated with a first connection to a first residential gateway device. In response to the detected service disruption, a second residential gateway device selected at the first residential gateway may be used to establish a second connection to the first residential gateway device. | 2011-05-05 |
| 20110103393 | SYSTEM, APPARATUS, AND METHOD FOR COMMUNICATION IN A TACTICAL NETWORK - A system, apparatus, and method are described for communication in a tactical network. A gateway is communicatively couplable to one or more tactical nodes and to one or more other gateways. The gateway is programmed to transmit information to and/or receive information from other gateways. Information exchanged includes gateway attributes, link attributes, service availability, and/or data availability. The gateway optionally provides quality of service, distributed persistence, load balancing, and/or transformation services. Services are provided in a modular, service-oriented architecture (SOA) to accommodate the addition of services and/or applications. | 2011-05-05 |
| 20110103394 | NETWORK TOPOLOGY CONCEALMENT USING ADDRESS PERMUTATION - A first packet is received from a client over an internal network destined for a remote node of an external network. The first packet includes a source IP address having an internal network portion that identifies a location of the client in the internal network and an external network portion that identifies a location of the internal network accessible by the external network. An obfuscation operation is performed on the internal network portion of the source IP address of the first packet to conceal the location of the client in the internal network and the internal network portion of the source IP address of the first packet is rewritten with the obfuscated internal network portion while maintaining the current external network portion of the source IP address. Thereafter, the first packet is transmitted to the remote node over the external network. | 2011-05-05 |
| 20110103395 | COMPUTING THE BURST SIZE FOR A HIGH SPEED PACKET DATA NETWORKS WITH MULTIPLE QUEUES - A communications method is provided. The method includes processing multiple packet queues for a high speed packet data network and associating one or more arrays for the multiple packet queues. The method also includes generating an index for the arrays, where the index is associated with a time stamp in order to determine a burst size for the high speed packet data network. | 2011-05-05 |
| 20110103396 | SELECTIVE LINK AGGREGATION IN A VIRTUALIZED ENVIRONMENT - A method, system, and computer usable program product for selective link aggregation in a virtualized data processing environment are provided in the illustrative embodiments. A data packet is received at a switch. An identifier associated with the data packet is determined. The identifier corresponds to a logical partition in a logical partitioned data processing system. A lookup is performed in a data structure to determine a set of ports associated with the identifier. The set of ports is retrieved from the data structure. A port is selected from the set of ports and the data packet is transmitted from the port to the logical partition. | 2011-05-05 |
| 20110103397 | TWO-PHASE ARBITRATION MECHANISM FOR A SHARED OPTICAL LINKS - A method for arbitration in an arbitration domain. The method includes: receiving, by each node of a plurality of nodes in the arbitration domain, an arbitration request from each sending node of the plurality of nodes in the arbitration domain, where the plurality of nodes in the arbitration domain each use a shared data channel to send data to a set of receiving nodes; assigning, by each node in the arbitration domain, consecutive time slots to each sending node based on a plurality of priorities assigned to the plurality of nodes in the arbitration domain; for each time slot: sending, from the arbitration domain, a switch request to a receiving node designated by the sending node, where the receiving node is in the set of receiving nodes; and sending, by the sending node, data to the receiving node via the shared data channel during the time slot. | 2011-05-05 |
| 20110103398 | TIME SLOT ALLOCATION METHOD AND APPARATUS - This method includes: judging, for each certain combination of the source and destination nodes, for which the number of time slots to be allocated is equal to or greater than 1, whether or not certain time slots exist that are capable of forming a route from the source node to the destination node by unused links; for each certain combination judged, at the judging, that the certain time slots exist that are capable of forming the route by the unused links, identifying, for each certain time slot, a shortest route among routes formed by the unused links, calculating an evaluation value from the number of hops in the shorted route, an allocated priority associated with a corresponding certain combination and the number of used links in the corresponding certain time slot; and identifying a maximum evaluation value among the evaluation values. | 2011-05-05 |
| 20110103399 | Tunnel Path MTU Discovery - A solution for tunnel path MTU discovery includes, at a first network device configured as an origination endpoint for a tunnel, storing a keep-alive packet having a size of an interface maximum transmission unit (MTU), the keep-alive packet indicating the packet should not be fragmented, the second network device configured as a termination endpoint for the tunnel. If the sending fails, the size of the keep-alive packet is iteratively changed to converge upon a path MTU, where the path MTU is the size of a largest keep-alive packet that can be sent from the first network device to the second network device without fragmentation. | 2011-05-05 |
| 20110103400 | Check data encoding using parallel lane encoders - An encoder for generating check data to accompaning payload data uses parallel lane encoders | 2011-05-05 |
| 20110103401 | METHOD AND APPARATUS FOR REPEATING ILLUMINATION INFORMATION ON A DAISY CHAIN BUS STRUCTURE - A data communication method is described for transmitting a data packet comprising data bytes in a daisy chained bus structure of a LED illumination system. The method comprises: the nodes of a group, except the last node of the group retransmitting the data packet without removing a first data byte from the incoming data packet; and the last node in the group removing the first byte from the data packet before retransmission. The invention further comprises a communication node, illumination assembly and bus structure implementing the method according to the invention. | 2011-05-05 |
| 20110103402 | Method and Device for Decoding, Corresponding Computer Program Product, Storage Means and Destination Node - A method is proposed for decoding a plurality of data packets received through a meshed communications network for the retrieval of source packets transmitted by one or more source nodes, the meshed communications network comprising relay nodes generating combined packets, each combined packet consisting of a linear combination of source packets. During the decoding by a destination node, this method consists in performing two decoding operations of which the first is a decoding by group of packets and the second is a decoding that takes account of pieces of likelihood information resulting from the first decoding. The fact of first of all carrying out a decoding with groups of packets makes it possible to exploit the repetitions (or redundancies) of packets in a meshed network to optimize the bit error rate during the decoding of source data transmitted on the communications network. | 2011-05-05 |
| 20110103403 | SYSTEM AND METHOD FOR DATA COMMUNICATIONS USING A SLIDING WINDOW PROTOCOL WITH SELECTIVE RETRANSMISSION - A system and method for data communications involves receiving a data frame in a receiver using a sliding receive window protocol, where a sliding receive window of the sliding receive window protocol is identified by sliding receive window information, and determining whether the data frame is a retransmitted data frame using the sliding receive window information. | 2011-05-05 |
| 20110103404 | SYSTEM AND METHOD FOR TRANSMITTING AUDIO DATA OVER SERIAL LINK - System and method for transmitting video and audio data words via a serial data link. A transmitting device includes a first module for generating an audio data frame comprising an audio data word and a frame separation code; and a second module for generating high speed data frames each comprising at least a portion of a video data word and only a portion of the audio data frame, and for transmitting the high speed data frames via the serial data link. A receiving device includes a first module for forming the video data word from one or more high speed data frames, and a second module for forming the audio data frame from portions of high speed data frames. The second module may extract the audio data word from the audio data frame, and generate an audio clock based on a rate in which audio data words are received. | 2011-05-05 |
| 20110103405 | Technique for adjusting a phase relationship among modulation symbols - A technique for adjusting a phase relationship among modulation symbols is disclosed. A method embodiment of this technique comprises the steps of applying to a sequence of modulation symbols a phase ramp that continuously increases over the duration of the symbol sequence, and applying a compensation phase to each modulation symbol to introduce a phase offset between two subsequent modulation symbols. The joint application of the phase ramp and the compensation phase can be used to establish a saw tooth-like phase characteristic over the sequence of modulation symbols. In one embodiment, the phase ramp is applied in the context of impressing a frequency shift on the modulation symbols. | 2011-05-05 |
| 20110103406 | FLEXIBLE OFDM/OFDMA FRAME STRUCTURE FOR COMMUNICATION SYSTEMS - A flexible OFDM/OFDMA frame structure technology for communication systems is disclosed. The OFDM frame structure technology comprises a configurable-length frame which contains a variable length subframe structure to effectively utilize OFDM bandwidth. Furthermore, the frame structure facilitates spectrum sharing between multiple communication systems. | 2011-05-05 |
| 20110103407 | Network Traffic Synchronization Mechanism - Methods, apparatuses and systems directed to a network traffic synchronization mechanism facilitating the deployment of network devices in redundant network topologies. In certain embodiments, when a first network device directly receives network traffic, it copies the network traffic and transmits it to at least one partner network device. The partner network device processes the copied network traffic, just as if it had received it directly, but, in one embodiment, discards the traffic before forwarding it on to its destination. In one embodiment, the partner network devices are operative to exchange directly received network traffic. As a result, the present invention provides enhanced reliability and seamless failover. Each unit, for example, is ready at any time to take over for the other unit should a failure occur. As discussed below, the network traffic synchronization mechanism can be applied to a variety of network devices, such as firewalls, gateways, network routers, and bandwidth management devices. | 2011-05-05 |
| 20110103408 | BEAM STABILIZED FIBER LASER - A laser head generating ultrashort pulses is integrated with an active beam steering device in the head. Direct linkage with an application system by means of an adequate interface protocol enables the active device to be controlled directly by the application system. | 2011-05-05 |
| 20110103409 | System and Method for Generating Intense Laser Light from Laser Diode Arrays - Laser modules using two-dimensional laser diode arrays are combined to provide an intense laser beam. The laser diodes in a two-dimensional array are formed into rows and columns, and an optical assembly images light generated by laser diodes in a column into an optical fiber. The laser light outputs of the laser modules are combined by a spectral combiner into an optical fiber to form an intense laser beam. | 2011-05-05 |
| 20110103410 | LASER BEAM CONTROL SYSTEM AND METHOD - A laser beam control system includes an output aperture through which a laser beam is directed toward a target. A laser beam return is also received through the output aperture, with the laser beam return including scatter from the laser beam. A deformable mirror is adapted to control the outgoing laser beam, and a sensor is adapted to detect the wavefront of the laser beam return. An optics controller is operationally coupled to the deformable mirror and is adapted to adjust the deformable mirror in response to the wavefront of the laser beam return. | 2011-05-05 |
| 20110103411 | Tunable Quantum Cascade Lasers and Photoacoustic Detection of Trace Gases, TNT, TATP and Precursors Acetone and Hydrogen Peroxide - Methods and apparatus for broad tuning of single wavelength quantum cascade lasers and the use of light output from such lasers for highly sensitive detection of trace gases such as nitrogen dioxide, acetylene, and vapors of explosives such as trinitrotoluene (TNT) and triacetone triperoxide (TATP) and TATP's precursors including acetone and hydrogen peroxide. These methods and apparatus are also suitable for high sensitivity, high selectivity detection of other chemical compounds including chemical warfare agents and toxic industrial chemicals. A quantum cascade laser (QCL) system that better achieves single mode, continuous, mode-hop free tuning for use in L-PAS (laser photoacoustic spectroscopy) by independently coordinating gain chip current, diffraction grating angle and external cavity length is described. An all mechanical method that achieves similar performance is also described. Additionally, methods for improving the sensor performance by critical selection of wavelengths are presented. | 2011-05-05 |
| 20110103412 | Tunable Quantum Cascade Lasers and Photoacoustic Detection of Trace Gases, TNT, TATP and Precursors Acetone and Hydrogen Peroxide - Methods and apparatus for broad tuning of single wavelength quantum cascade lasers and the use of light output from such lasers for highly sensitive detection of trace gases such as nitrogen dioxide, acetylene, and vapors of explosives such as trinitrotoluene (TNT) and triacetone triperoxide (TATP) and TATP's precursors including acetone and hydrogen peroxide. These methods and apparatus are also suitable for high sensitivity, high selectivity detection of other chemical compounds including chemical warfare agents and toxic industrial chemicals. A quantum cascade laser (QCL) system that better achieves single mode, continuous, mode-hop free tuning for use in L-PAS (laser photoacoustic spectroscopy) by independently coordinating gain chip current, diffraction grating angle and external cavity length is described. An all mechanical method that achieves similar performance is also described. Additionally, methods for improving the sensor performance by critical selection of wavelengths are presented. | 2011-05-05 |
| 20110103413 | Quasi-continuous wave ultraviolet light source with optimized output characteristics - The present application discloses various embodiments and methods of producing a quasi-CW UV laser system having the pulse duration and bandwidth to optimize harmonic conversion while producing a UV output configured to satisfy the constraints imposed by the optical system in optical communication therewith. More specifically, in one embodiment the present application discloses a method of optimizing at least one characteristic of the output of a laser system and includes providing a laser system having at least one spectral modification element in optical communication therewith, determining at least one optical characteristic of the output of the laser system for a given application, selecting the bandwidth of the output of the laser system to provide the determined characteristic, and adjusting the spectral modification element to provide the selected bandwidth. | 2011-05-05 |
| 20110103414 | COMPACT MID-IR LASER - A compact mid-IR laser device utilizes a quantum cascade laser to provide mid-IR frequencies suitable for use in molecular detection by signature absorption spectra. The compact nature of the device is obtained owing to an efficient heat transfer structure, the use of a small diameter aspheric lens and a monolithic assembly structure to hold the optical elements in a fixed position relative to one another. The compact housing size may be approximately 20 cm×20 cm×20 cm or less. Efficient heat transfer is achieved using a thermoelectric cooler TEC combined with a high thermal conductivity heat spreader onto which the quantum cascade laser is thermally coupled. The heat spreader not only serves to dissipate heat and conduct same to the TEC, but also serves as an optical platform to secure the optical elements within the housing in a fixed relationship relative on one another. A small diameter aspheric lens may have a diameter of 10 mm or less and is positioned to provided a collimated beam output from the quantum cascade laser. The housing is hermetically sealed to provide a rugged, light weight portable MIR laser source. | 2011-05-05 |
| 20110103415 | OPTICAL DEVICE FOR WAVELENGTH LOCKING - An optical device comprising a 1×2 optical coupler on a planar substrate and a waveguide on the planar substrate, the waveguide having a first arm and a second arm coupled to the 1×2 optical coupler. The device also comprises an optical resonator on the planar substrate, wherein the optical resonator is optically coupled to the first arm and the optical resonator is substantially athermalized. | 2011-05-05 |
| 20110103416 | Tunable Quantum Cascade Lasers and Photoacoustic Detection of Trace Gases, TNT, TATP and Precursors Acetone and Hydrogen Peroxide - Methods and apparatus for broad tuning of single wavelength quantum cascade lasers and the use of light output from such lasers for highly sensitive detection of trace gases such as nitrogen dioxide, acetylene, and vapors of explosives such as trinitrotoluene (TNT) and triacetone triperoxide (TATP) and TATP's precursors including acetone and hydrogen peroxide. These methods and apparatus are also suitable for high sensitivity, high selectivity detection of other chemical compounds including chemical warfare agents and toxic industrial chemicals. A quantum cascade laser (QCL) system that better achieves single mode, continuous, mode-hop free tuning for use in L-PAS (laser photoacoustic spectroscopy) by independently coordinating gain chip current, diffraction grating angle and external cavity length is described. An all mechanical method that achieves similar performance is also described. Additionally, methods for improving the sensor performance by critical selection of wavelengths are presented. | 2011-05-05 |
| 20110103417 | Systems, Methods, and Circuits for Driving Large Off-Chip Loads - A method and system to drive large off-chip loads, such as, for example, laser diodes, wherein the system includes an integrated circuit coupled to an external differential diode load. Alternatively, the external diode load may be driven single-ended. The integrated circuit includes a data buffer device and a clock buffer device. The integrated circuit also includes a multiplexer device coupled to the clock buffer device configured to multiplex a data input signal and a clock input signal received at respective inputs of the integrated circuit. If the external diode is single-ended, the data input signal is transmitted to the data buffer device, which is then used solely to drive the diode load. If the diode load is differential, the data buffer device receives the data input signal. At the same time, the multiplexer device receives both the data input signal and the clock input signal and selects the data signal to drive the clock buffer device. For a diode load being driven differentially, the outputs of the two buffer devices are merged together externally through the use of a power-combining network, which includes external or off-chip transmission lines, which carry a respective output signal for the data buffer device and the clock buffer device. | 2011-05-05 |
| 20110103418 | SUPERLUMINESCENT DIODES BY CRYSTALLOGRAPHIC ETCHING - An optoelectronic device, comprising an active region and a waveguide structure to provide optical confinement of light emitted from the active region; a pair of facets on opposite ends of the device, having opposite surface polarity; and one of the facets which has been roughened by a crystallographic chemical etching process, wherein the device is a nonpolar or semipolar (Ga,In,Al,B)N based device. | 2011-05-05 |
| 20110103419 | OPTICAL DEVICE - The present invention provides an optical device capable of suppressing a drive current and an optical output to be varied with a passage of the time. The optical device includes: an optical element including a first end face and a second end face, and emitting light having a wavelength from 300 nm to 600 nm both inclusive at least from the second end face in the first end face and the second end face; a pedestal including a supporting substrate supporting the optical element, and a connecting terminal electrically connected to the optical element; and a sealing section including a light transmitting window in each of a portion facing the first end face and a portion facing the second end face, and sealing the optical element. | 2011-05-05 |
| 20110103420 | Laser diode - A laser diode with which high density crystal defect and surface roughness are able to be inhibited from being generated is provided. The laser diode includes a laminated body including an active layer and a current narrowing layer on a substrate. The substrate is an inclined substrate having an off-angle larger than 0 degrees in the direction of [1-100] from (0001) C plane. | 2011-05-05 |
| 20110103421 | APPLICATION-ORIENTED NITRIDE SUBSTRATES FOR EPITAXIAL GROWTH OF ELECTRONIC AND OPTOELECTRONIC DEVICE STRUCTURES - The present invention provides an applications-oriented nitride compound semiconductor substrate, and devices based on it, whose lattice constant can be tuned to closely match that of any nitride thin film or films deposited on it for specific electronic or optoelectronic device applications. Such application-oriented nitride substrates, which can be composed of ternary In | 2011-05-05 |
| 20110103422 | LASER-INDUCED OPTICAL WIRING APPARATUS - A laser-induced optical wiring apparatus includes a substrate, first and second light-reflecting members provided on the substrate separately from each other, an optical waveguide provided on the substrate for optically coupling the first and second light-reflecting members to form an optical resonator, a first optical gain member provided across the optical waveguide and forming a laser oscillator along with the first and second light-reflecting members, and a second optical gain member provided across the optical waveguide separately from the first optical gain member, and forming another laser oscillator along with the first and second light-reflecting members. | 2011-05-05 |
| 20110103423 | Apparatus for Measuring the Temperature Coefficient of a Concentrator Photovoltaic Module - Disclosed is an apparatus for measuring temperature coefficients of a concentrator photovoltaic module. The apparatus includes a solar simulator for providing a radiant source, a environment chamber, a concentrator photovoltaic module, a temperature control unit for controlling the temperature of environment chamber, a circuit-voltage curve measurement unit for measuring current-voltage characteristics of a photovoltaic device and a reference cell for measuring the irradiation of the solar simulator. | 2011-05-05 |
| 20110103424 | Electro-Magnetic Radiation Detector - According to certain embodiments, an electro-magnetic radiation detector includes a sensor coupled to multiple nanostructures and an electro-magnetic radiation indicating device. The nanostructures are adapted to absorb electro-magnetic energy and generate heat according to the absorbed electro-magnetic energy. The sensor is adapted to measure the heat generated by the plurality of nanostructures and to generate a first signal according to the measured heat. The electro-magnetic radiation indicating device is operable to receive the signal from the sensor and indicate a level of electro-magnetic energy absorbed by the plurality of nanostructures according to the received signal. | 2011-05-05 |
| 20110103425 | METHOD AND APPARATUS FOR DETERMINING MELT ELASTICITY - An apparatus and method for determining the standardized melt elasticity (sME) force of a thermoplastic polymer needed to stretch a strand of melted polymer at a speed about thirty three times faster than the speed of strand formation from a body of melted polymer under constant stress from an unencumbered dead weighted piston. | 2011-05-05 |
| 20110103426 | STEEL PLATE QUALITY ASSURANCE SYSTEM AND EQUIPMENT THEREOF - The present invention provides a steel plate quality assurance system and facilities thereof, wherein the steel plate quality assurance system measures, with a steel plate manufacturing line including a finishing mill of a steel plate manufacturing line, and accelerated cooling equipment disposed on the downstream side of the finishing mill in the advancing direction of the steel plate manufacturing line, temperature of at least the whole area of the upper surface of a steel plate, or the whole area of the lower surface of a steel plate to perform quality assurance, and includes temperature measurement means; temperature analysis means; and mechanical property determining means. | 2011-05-05 |
| 20110103427 | SYSTEM AND METHOD OF CONTROLLING MODULATION FREQUENCY OF SPREAD-SPECTRUM SIGNAL - An apparatus for generating a spread-spectrum signal based on an input signal whose frequency may vary substantially. The apparatus is particularly suited for controlling the frequency of the modulation in response to wide variations of the frequency of the input signal. This prevents the modulation frequency from deviating into an undesired frequency range which could cause adverse operational effects. The apparatus includes a detector adapted to generate a first signal related to the frequency of the input signal, a controller adapted to generate a second signal for controlling a frequency of a modulation signal based on the first signal, a modulation signal generator adapted to generate the modulation signal based on the second signal, and a spread-spectrum signal generator adapted to generate the spread-spectrum signal based on the modulation signal. | 2011-05-05 |
| 20110103428 | METHOD AND DEVICE FOR INTELLIGENT FREQUENCY HOPPING IN A SHARED FREQUENCY BAND - A non-Bluetooth device operates in a same frequency band as Bluetooth devices by employing a method of intelligent frequency hopping. The method includes: scanning a frequency band for frequency hopping communications in the frequency band by one or more Bluetooth communication devices communicating according to a Bluetooth communication protocol; determining a first frequency hopping sequence utilized by the one or more Bluetooth communication devices according to the Bluetooth communication protocol; determining a second frequency hopping sequence within the frequency band to avoid interference from the frequency hopping communications by the one or more Bluetooth communication devices; and establishing a wireless communication connection between two non-Bluetooth devices, the wireless communication connection operating in the frequency band according to a second wireless communication protocol different than the Bluetooth communication protocol, and using the second frequency hopping sequence. | 2011-05-05 |
| 20110103429 | Radio Control Transmitter And Method For Communication In The Same - A maneuvering signal for controlling a radio-controlled object is transmitted using 2.4 GHz band frequency hopping techniques. In a trainer mode, an instructor's radio control transmitter is configured to transmit the maneuvering signal and receive a trainer signal in each of frame periods by which a frequency is switched in accordance with the frequency hopping scheme. A trainee's radio control transmitter is configured to transmit the trainer signal for each of the frame periods by which a frequency is switched in accordance with the frequency hopping scheme. | 2011-05-05 |
| 20110103430 | Autocorrelation-Based Multi-Band Signal Detection - A receiver device for detecting a multi-band signal, the receiver device comprising a bank of autocorrelation units adapted for separating the multi-band signal into a set of autocorrelation signals, and a sampling stage arranged downstream the bank of autocorrelation units and adapted for sampling the set of autocorrelation signals to thereby select individual signal components for detection. | 2011-05-05 |
| 20110103431 | METHODS AND SYSTEMS FOR INTERFERENCE CANCELLATION IN MULTI-MODE COEXISTENCE MODEMS - Certain embodiments of the present disclosure support techniques for interference cancellation in a multi-mode wireless modem that supports coexistence of different radio technologies. | 2011-05-05 |
| 20110103432 | ENHANCED CROSS CORRELATION DETECTION OR MITIGATION CIRCUITS, PROCESSES, DEVICES, RECEIVERS AND SYSTEMS - A receiver ( | 2011-05-05 |
| 20110103433 | RAPID ACQUISITION METHODS AND APPARATUS FOR GPS SIGNALS - A method and apparatus for receiving a signal from transmitters such as GPS satellites, for fixing the location of the receiver. Each of the transmitted signals includes a unique periodically-repeating sequence. A received signal is stored by the receiver for at least two repetitions of the periodically-repeating sequence. FFT operations are performed, and the resulting data frequency samples are pruned responsive to a hypothesized residual frequency, a procedure which significantly reduces the total number of subsequent calculations and therefore significantly reduces processing time. A correlation series is determined from the pruned samples and reference frequency samples corresponding to a hypothesized transmitter. If a match is found in the examination of this series, a code phase offset is determined; if not the process is repeated with another hypothesized residual frequency. Multiple correlation series similarly obtained may also be incoherently combined prior to this examination. The apparatus and method disclosed herein is particularly useful for combined position location and communication systems, especially those that are unsynchronized, such as assisted GPS (“A-GPS”) utilized on GSM and UMTS cellular telephone systems. | 2011-05-05 |
| 20110103434 | GAIN CONTROL & FREQUENCY STABILITY IN DIGITALLY-CHANNELISED RF BI-DIRECTIONAL AMPLIFIERS - Improved gain control for a digital signal processing (DSP) repeater, such as a bi-directional repeater, is disclosed. A repeater includes a back-end subsystem which comprises, for each channel in a set of wanted frequency channels that are amplified by the repeater, a coupler ( | 2011-05-05 |
| 20110103435 | HD RADIO DIVERSITY RECEIVER WITH SHARED PROCESSING PATHS - A receiver including a plurality of antennas for receiving at least one radio signal, an analog processing path in signal communication with at least one of the antennas, a digital processing path in signal communication with at least one of the antennas, and a processor for controlling a processing of the at least one radio signal, wherein the at least one radio signal is processed by at least one of the analog processing path and the digital processing path. | 2011-05-05 |
| 20110103436 | TRANSMIT PSD CEILING IN PACKET-BASED OFDM SYSTEMS - Adjusted maximum transmit PSD levels have an effect on the SNR. If the ADC noise is assumed to be the limiting factor, then there can be a benefit for reducing the maximum transmit PSD level. For example, by lowering the maximum transmit PSD level from −50 dBm/Hz to −70 dBm/Hz results in an increase in SNR for subcarriers above 30 M Hz. The SNR for subcarriers above 30 MHz can increase from 30 db (−80-(−110)) to 50 db (−80-(−130)). Therefore, by changing the maximum transmit PSD level, applying a ceiling on PSD mask, the aggregate sum of the available SNR's over the available subcarriers is therefore increasing the obtainable OFDM data rate. In other words, a maximum transmit PSD mask can be used to lower the transmit PSD value of at least one subcarrier which results in an increase in SNR for at least one subcarrier. | 2011-05-05 |
| 20110103437 | Private, convert and/or cognitive communications systems and/or methods based upon pseudo-randomly generated communications alphabets - An available signal space, whether it is a priori specified or is cognitively determined based upon an assessment of frequency utilization, serves to provide a number of signal dimensions which may be occupied by a number of pseudo-randomly generated waveforms. The number of pseudo-randomly generated waveforms may be based upon a key input to a pseudo-random number generator and a desired statistical distribution, and may be subjected to an orthogonalization procedure to produce a respective number of orthogonal pseudo-random waveforms which may serve as a communications alphabet. A specific data sequence to be communicated may be associated with a respective specific element/member of the orthogonal pseudo-random waveforms and that specific element/member may be transmitted in lieu of the specific data sequence. Systems/methods of spread-spectrum communications that are substationally devoid of revealing signatures such as chipping and cyclostationarity are presented, offering increased privacy, reduced detectability and reduced exploitation of communications. | 2011-05-05 |
| 20110103438 | FLEXIBLE INTERCONNECT PATTERN ON SEMICONDUCTOR PACKAGE - An embodiment of the present invention is a technique to fabricate a metal interconnect. A first metal trace is printed on a die attached to a substrate or a cavity of a heat spreader in a package to electrically connect the first metal trace to a power contact in the substrate. A device is mounted on the first metal trace. The device receives power from the substrate when the package is powered. | 2011-05-05 |
| 20110103439 | APPARATUS AND METHODS FOR IMPROVED HIGH-SPEED COMMUNICATION SYSTEMS - Apparatus and methods for improved high-speed communication by exchanging low-speed information regarding the high-speed exchanges over the same communication medium. In one exemplary embodiment, a communication device includes a high-speed transceiver adapted to exchange high-speed data with another device via a communication medium using high-frequency signals. The device also includes a low-speed component adapted to exchange low-speed information over the same communication medium as low-frequency signals. The low-frequency signals may be applied as common mode signals to a differential communication path so as to not interfere with the high-speed data exchanges. In another embodiment, a high-pass filter may be included in the device to remove the low-frequency signals before the high-speed data is applied to the high-speed transceiver. Responsive to receipt of the low-speed information, a device may adjust parameters of the transceiver to improve the high-speed data exchanges. | 2011-05-05 |
| 20110103440 | Physical Layer Device Having a SERDES Pass Through Mode - A physical layer device (PLD), comprising: a first serializer-deserializer (SERDES) device having a first parallel port; a second SERDES device having a second parallel port; a third SERDES device having a third parallel port; and a path selector being selectively configurable to provide either (i) a first signal path between the first and second parallel ports, or (ii) a second signal path between the first and third parallel ports. | 2011-05-05 |
| 20110103441 | CABLE MODEM - A cable modem includes an amplifier, a power module, a switch circuit, a monitor signal, a duplexer and a RF matching circuit. The switch includes a PMOS transistor and a first electronic switch. The RF matching circuit included a second electronic switch and an electronic matching device. The monitoring signal source is configured for outputting a control signal. When the monitoring signal source stops outputting the control signal, both the first electronic switch and the PMOS transistor are turned off to cut off the power to the amplifier, the second electronic switch is turned on, and conducts the RF signal received by the signal receiving/transmitting circuit to the duplexer which further conducts the RF signal to the radio frequency matching circuit. | 2011-05-05 |
| 20110103442 | MOBILE TERMINAL, METHOD OF CONTROLLING MOBILE TERMINAL AND CONTROL APPARATUS - A mobile terminal has a communication unit for performing wireless communication, a plurality of modem units for performing modulation and demodulation in different communication methods, respectively, and a control unit for obtaining time information indicating a suspension of a wireless communication from a main modem unit in the plurality of modem units, for suspending the main modem unit from performing wireless communication via the communication unit, and for enabling the main modem unit to perform wireless communication via the communication unit on the basis of the time information, wherein, while the main modem unit suspending wireless communication, the control unit enables a sub modem unit in the plurality of modem units to measure a reception level via the communication unit in accordance with the obtained time information. | 2011-05-05 |
| 20110103443 | SYSTEMS AND METHODS FOR ESTABLISHING A DIAGNOSTIC TRANSMISSION MODE AND COMMUNICATING OVER THE SAME - Upon detection of a trigger, such as the exceeding of an error threshold or the direction of a user, a diagnostic link system enters a diagnostic information transmission mode. This diagnostic information transmission mode allows for two modems to exchange diagnostic and/or test information that may not otherwise be exchangeable during normal communication. The diagnostic information transmission mode is initiated by transmitting an initiate diagnostic link mode message to a receiving modem accompanied by a cyclic redundancy check (CRC). The receiving modem determines, based on the CRC, if a robust communications channel is present. If a robust communications channel is present, the two modems can initiate exchange of the diagnostic and/or test information. Otherwise, the transmission power of the transmitting modem is increased and the initiate diagnostic link mode message re-transmitted to the receiving modem until the CRC is determined to be correct. | 2011-05-05 |
| 20110103444 | Method and apparatus for regaining watermark data that were embedded in an original signal by modifying sections of said original signal in relation to at least two different - Every watermarking processing needs a detection metric to decide at decoder side whether audio signal content is marked, and which symbol is embedded inside the audio signal content. The invention provides a new detection metric that achieves a reliable detection of watermarks in the presence of additional noise and echoes. This is performed by taking into account the information contained in the echoes of the received audio signal in the decision metric and comparing it with the corresponding metric obtained from decoding a non-marked audio signal, based on calculating the false positive detection rates of the reference sequences for multiple peaks. The watermark symbol corresponding to the reference sequence having the lowest false positive error is selected as the embedded one. | 2011-05-05 |
| 20110103445 | METHOD AND APPARATUS FOR SYNCHRONIZING HIGHLY COMPRESSED ENHANCEMENT LAYER DATA - Multimedia application data formats often use data packets and may contain packetized hierarchical layers with a base layer (BL) and one or more enhancement layers (EL). Packets that comprise variable length coded data typically provide padding bits, which can be used for adding checksum information. The checksum information refers to both, the decoded base layer and decoded enhancement layer packet data, and is used for detecting synchronization loss between the layers. Though the packets provide different individual amounts of padding bits, this variable amount of bits per packet is sufficient for adding check-sum information for synchronization related purposes. This allows e.g. out-of-sync detection even if the enhancement layer encoding provides no overhead information for synchronization, in particular no packet headers and no packet synchronization words. | 2011-05-05 |
| 20110103446 | Test System - A test system for testing an electronic device is disclosed. The test system includes a signal generator for generating an input signal, a signal splitter for splitting the input signal into a first splitting signal and a second splitting signal, a micro control unit for generating a first control signal and a second control signal, a first transmission interface for transmitting the first splitting signal and the first control signal, a second transmission interface for transmitting the second splitting signal and the second control signal, and a first signal adjustment unit for transforming the first splitting signal to a first test signal for test according to the first control signal. | 2011-05-05 |
| 20110103447 | Method and Device for Testing a Mobile Station's Capability of Processing at Least One Second Channel and Communication System Comprising Such Device - A method and a device are provided for testing a mobile station's capability of processing at least two channels in a resource unit is provided, wherein a base station provides a test message to the mobile station; wherein the mobile station's capability of processing the at least two channels is determined based upon the mobile station's feedback. Further, a communication system comprising such a device is suggested. | 2011-05-05 |
| 20110103448 | MULTI-RANGE OBJECT LOCATION ESTIMATION - Estimating the impulse response of a channel by providing an initial signal ( | 2011-05-05 |
| 20110103449 | WIRELESS COMMUNICATION UNIT AND METHOD FOR DC OFFSET ESTIMATION | 2011-05-05 |
| 20110103450 | OFDM CHANNEL ESTIMATION SYSTEM AND METHOD COMPONENTS - Channel estimation for high mobility OFDM channels is achieved by identifying a set of channel path delays from an OFDM symbol stream including carrier data, inter-channel interference noise and channel noise; determining the average channel impulse response for the identified set of channel path delays in each symbol; generating a path delay curvature for each channel path delay in each symbol based on stored average channel impulse responses for the identified channel path delays; estimating the carrier data in the symbols in the OFDM symbol stream in the presence of inter-channel interference noise and channel noise from the OFDM symbol steam and the average impulse responses for the identified channel path delays; reconstructing the inter-channel interference noise in response to the path delay curvature, the identified set of channel path delays and estimated carrier data to produce a symbol stream of carrier data and channel noise with suppressed inter-channel interference noise. | 2011-05-05 |
| 20110103451 | System for Independently Modifying Jitter and Noise Components in a Signal Measurement Device - A digitizing instrument is used for modifying pattern data and jitter and noise components of a communication signal. In a typical implementation, the midpoints of a rising edge slope and horizontal portion of the communication signal are determined and multiple digital data records are acquired at the midpoints. The data sample records are transformed to frequency components and the random jitter and noise, and periodic jitter and noise components are determined. A correlated pattern data and the jitter and noise components are matrix elements in a simulated signal channel having communication system elements. Each correlated pattern data and jitter and noise component may be modified for each of the communication system element. The selectively modified correlated pattern data and jitter and noise components are combined to produce a modified communication signal that is displayed as a numeric table, eye diagram or bit error rate presentation. | 2011-05-05 |
| 20110103452 | DIGITAL CUMULATIVE SPECTRUM ANALYSIS APPARATUS AND METHOD FOR DIRECTION FINDING AND LOCATION - A digital spectrum analysis apparatus and method for direction finding (DF) and location is provided. The digital spectrum analysis apparatus for single-channel direction finding includes: a digital processing unit configured to receive a signal, convert the received signal into a digital signal, reduce a sampling rate of the digital signal by using a digital down converter (DDC), and convert the digital signal into a baseband complex signal; a spectrum processing unit configured to map a bearing and a power level of the baseband complex signal into coordinate system, and allocate different colors to the power levels depending on the accumulation ratio of the power levels; and a display unit configured to display the power levels with colors in order to estimate the bearing of the signal. | 2011-05-05 |
| 20110103453 | OFDMCHANNEL ESTIMATION SYSTEM AND METHOD COMPONENTS - Channel estimation for high mobility OFDM channels is achieved by identifying a set of channel path delays from an OFDM symbol stream including carrier data, inter-channel interference noise and channel noise; determining the average channel impulse response for the identified set of channel path delays in each symbol; generating a path delay curvature for each channel path delay in each symbol based on stored average channel impulse responses for the identified channel path delays; estimating the carrier data in the symbols in the OFDM symbol stream in the presence of inter-channel interference noise and channel noise from the OFDM symbol steam and the average impulse responses for the identified channel path delays; reconstructing the inter-channel interference noise in response to the path delay curvature, the identified set of channel path delays and estimated carrier data to produce a symbol stream of carrier data and channel noise with suppressed inter-channel interference noise. | 2011-05-05 |
| 20110103454 | COGNITIVE RADIO DEVICE - An example Cognitive Radio (CR) described herein may include equalization and Automatic Modulation Classification (AMC). The equalization may employ digital filter techniques with an adjustable length or order. The output of the equalization may be provided to the AMC, where the AMC may be adapted to identify various characteristics about the RF environment and also to identify probabilities of classification associated with the performance of the AMC itself. The CR device may be configured to adjust the equalization using feedback from the AMC to enhance performance of each other. | 2011-05-05 |
| 20110103455 | ADAPTIVE DIGITAL POST DISTORTION REDUCTION - A method for adaptive digital post distortion reduction is described. An analog radio frequency (RF) signal is received. The frequency of the analog RF signal is downconverted using analog circuitry. The analog RF signal is converted to a digital signal using an analog to digital converter (ADC). Digital post distortion reduction is applied to the digital signal to reduce nonlinearities in the digital signal. | 2011-05-05 |
| 20110103456 | METHOD AND SYSTEM FOR LOW COMPLEXITY CONJUGATE GRADIENT BASED EQUALIZATION IN A WIRELESS SYSTEM - A method for processing signals includes, in a wireless system comprising one or more processors and/or circuits integrated within a single chip, initializing values related to at least one channel response vector and at least one correlation vector using a conjugate gradient-based (CG) algorithm. A plurality of filter taps may be updated utilizing at least one channel response vector and at least one correlation vector, for a plurality of received clusters, based on the initialized values and at least one signal-to-noise ratio (SNR) for the received signal clusters. At least a portion of the received signal clusters may be filtered utilizing at least a portion of the updated plurality of filter taps. The updating may be repeated whenever a specified signal-to-noise ratio (SNR) for the received clusters is reached. The initialized values may be updated during a plurality of iterations. | 2011-05-05 |
| 20110103457 | METHOD OF DYNAMIC CONTROL OF THE FOCUSING OF A SIGNAL PRE-EQUALIZED BY TIME REVERSAL - A method is provided for dynamically controlling the focus of a signal pre-equalized by time reversal of an estimated propagation channel between a source antenna of a source communicating entity and a destination antenna of a destination communicating entity at a current instant, said method comprising steps for evaluation by the destination communicating entity of a relative focus quality of the pre-equalized signal sent by the source antenna and received by the destination antenna, compared to a quality at a focal point, and if the evaluated relative focus quality does not satisfy a predetermined criterion, for request, by the destination communicating entity, to modify the focus addressed to the source communicating entity for a subsequent instant. | 2011-05-05 |
| 20110103458 | ASYMMETRIC DECISION FEEDBACK EQUALIZATION SLICING IN HIGH SPEED TRANSCEIVERS - An asymmetric DFE receiver circuit. The receiver circuit includes a voltage measuring unit configured to determine a signal voltage of a received signal, and a comparator unit configured to calculate a difference between the signal voltage and an evaluation threshold voltage and to compare the difference to the value of a midpoint voltage. The comparator unit is configured to generate a first control signal if the difference is greater than the midpoint voltage value or a second control signal if the signal voltage is less than the midpoint voltage value. The receiver includes an adjustment circuit configured to adjust the evaluation threshold voltage toward the signal voltage if the first control signal is generated and away from the signal voltage if the second control signal is generated. The rates of adjustment may vary depending upon whether the received signal is a transition bit or a non-transition bit. | 2011-05-05 |
| 20110103459 | SYSTEM AND METHOD FOR UN-INTERRUPTED OPERATION OF COMMUNICATIONS DURING INTERFERENCE - Methods and systems to substantially eliminate effects of EMI burst noise in an Ethernet system are provided herein. The method includes the step of computing and storing filter coefficients configured to adapt to a range of EMI frequencies. The method further comprises the step of receiving a signal and detecting EMI and frequency of the EMI in the received signal. The method further comprises selecting filter coefficients corresponding to the determined frequency of the detected EMI and adjusting a frequency response of one or more filters using the selected filter coefficients so as to substantially eliminate effects of the EMI in the received signal. The method further includes the step of sending filter coefficients to a link partner corresponding to the frequency of the detected EMI. | 2011-05-05 |
| 20110103460 | SYSTEMS AND METHODS FOR PROCESSING A COMPOSITE SIGNAL - An embodiment of a communication system can generate a composite signal that includes two or more different signals, where the signals represent different types of data. A data signal having one or more pulses that represent digital data of a first type is provided. A control signal that is a digital bit stream is provided. A composite signal is generated by multiplying a frequency of the data signal by a factor and modifying widths of pulses based on the bits of the control signal. The composite signal can be provided to a receiver device over a communication medium. The receiver device can determine the data signal and the control signal from the composite signal. | 2011-05-05 |
| 20110103461 | SYSTEM AND METHOD OF USING VARIABLE PULSES FOR SYMBOLOGY - A method and system for storing and transmitting data using variable pulse characteristics to represent ASCII or UNICODE characters, of the value of a string of data using a number base higher than 2. Pulse characteristics are modified to correspond to different data values. Pulse characteristics can include pulse durations, pulse spacings, pulse amplitudes, pulse phases, pulse polarities, pulse shapes and/or other pulse characteristics. | 2011-05-05 |
| 20110103462 | SYSTEM, METHOD AND COMPUTER PROGRAM PRODUCT FOR IMAGE AND VIDEO TRANSCODING - A system and method are provided for compressing data. Initially, data is received in a single device. Such data is encoded utilizing the single device to generate first compressed data in a first format. Moreover, the first compressed data is transcoded utilizing the single device to generate second compressed data in a second format. | 2011-05-05 |
| 20110103463 | DIGITAL BROADCASTING SYSTEM AND METHOD OF PROCESSING DATA - A digital broadcast system including a broadcast receiving system and data processing method are disclosed. In the broadcast receiving system receiving broadcast signals, the broadcast receiving system includes a transmission parameter decoding unit, a known sequence detector, and a burst controller. The transmission parameter decoding unit detects information on a burst of a received signal from broadcast data having main service data and mobile service data multiplexed therein within a field of the received signal and outputs the detected information on the burst. The known sequence detector receives burst information from the transmission parameter decoding unit and uses the received burst information and known data position information included in the received data, so as to output burst control information. The burst controller uses the burst control information to control power supply of the broadcast receiving system. | 2011-05-05 |
| 20110103464 | Methods and Apparatus for Locally Adaptive Filtering for Motion Compensation Interpolation and Reference Picture Filtering - Methods and apparatus are provided for locally adaptive filtering for motion compensation interpolation and reference picture filtering. An apparatus includes an encoder for encoding picture data. The encoder includes at least one locally adaptive filter for performing locally adaptive filtering for at least one of reference picture filtering and interpolation filtering with respect to the picture data. | 2011-05-05 |
| 20110103465 | ENCODING METHOD OF SCREEN FRAME AND ELECTRONIC DEVICE APPLYING THE SAME - An encoding method of screen frame and its application of electronic devices, which rapidly detect motion regions and motionless regions from lossless screen frames captured by software, and then encode the motion regions with lower image quality while encode motionless regions with higher quality to display higher quality images and smooth video at a receiving end in real-time. Furthermore, the above-mentioned encoding method is optimized for lossless screen frames which does not need complicated operations of video encoder of prior art, such as motion estimation, motion compensation, etc., so that the method can be implemented with minor system resources and lower latency delay. | 2011-05-05 |
| 20110103466 | BTSC TECHNIQUES - The disclosed BTSC encoder includes a left high pass filter means for receiving a digital left channel audio signal and for digitally high pass filtering the digital left channel audio signal and thereby generating a digital left filtered signal; a right high pass filter means for receiving a digital right channel audio signal and for digitally high pass filtering the digital right channel audio signal and thereby generating a digital right filtered signal; a matrix means for receiving the digital left and digital right filtered signals, and including means for summing the digital left and digital right filtered signals and thereby generating a digital sum signal, and including means for subtracting one of the digital left and digital right filtered signals from the other of the digital left and digital right filtered signals and thereby generating a digital difference signal; a difference channel processing means for digitally processing the digital difference signal; and a sum channel processing means for digitally processing the digital sum signal. | 2011-05-05 |
| 20110103467 | Encoding and Decoding of Video Images Based on a Non-linear Quantization - The present invention enables to adaptively shape the quantization intervals according to a non-linear quantization curve for encoding video data in order to better adapt the quantization process to film grain information without increasing the resulting bit rate while maintaining the coding efficiency. | 2011-05-05 |
| 20110103468 | CONTROLLING VIDEO ENCODING USING AUDIO INFORMATION - A video encoder may reduce bandwidth consumption by skipping encoding of or reducing an encoding rate of video frames corresponding to silent audio frames, that is, audio frames that do not include speech data. In one example, an apparatus includes a video encoder comprising a coding unit configured to encode video data in a first or second mode and a mode select unit configured to receive an indication of whether encoded audio data corresponding to the video data to be encoded includes speech data. When the audio data includes speech data, the mode select unit selects the first mode, and when the audio data does not include speech data, the mode select unit selects the second mode. The second mode consumes relatively less bandwidth, e.g., by reducing a bitrate, modifying a quantization parameter to increase quantization, and/or reducing a frame rate relative to the first mode. | 2011-05-05 |
| 20110103469 | ENTROPY ENCODING/DECODING METHOD AND APPARATUS FOR ACCELERATING VIDEO DECODING - An entropy encoding method and apparatus implementing the same, the method including: generating bitstreams of data groups by performing entropy encoding on a plurality of symbols of the data groups and storing the bitstreams in a storage unit by allocating a plurality of divided segments of the storage unit according to properties of the bitstreams. | 2011-05-05 |
| 20110103470 | High Precision Encoding and Decoding of Video Images - Methods, systems, and computer programs for improved quality video compression. Image quality from MPEG-style video coding may be improved by preserving a higher number of bits during intermediate encoding and decoding processing steps. Problems of inverse discrete cosine transform (IDCT) mismatch can be eliminated by exactly matching the IDCT function numerical algorithm of the decoder to the IDCT function numerical algorithm used for the decoding portion of the encoder. Also included is an application of high precision compression to wide dynamic range images by extending the range of the “quantization parameter” or “QP”. The extension of QP may be accomplished either by increasing the range of QP directly, or indirectly through a non-linear transformation. Also included is an application of extended intermediate processing precision and an extended QP range to reduced contrast regions of an image to extend the precision with which the low-contrast portions are compression coded. | 2011-05-05 |
| 20110103471 | High Precision Encoding and Decoding of Video Images - Methods, systems, and computer programs for improved quality video compression. Image quality from MPEG-style video coding may be improved by preserving a higher number of bits during intermediate encoding and decoding processing steps. Problems of inverse discrete cosine transform (IDCT) mismatch can be eliminated by exactly matching the IDCT function numerical algorithm of the decoder to the IDCT function numerical algorithm used for the decoding portion of the encoder. Also included is an application of high precision compression to wide dynamic range images by extending the range of the “quantization parameter” or “QP”. The extension of QP may be accomplished either by increasing the range of QP directly, or indirectly through a non-linear transformation. Also included is an application of extended intermediate processing precision and an extended QP range to reduced contrast regions of an image to extend the precision with which the low-contrast portions are compression coded. | 2011-05-05 |
| 20110103472 | METHODS, SYSTEMS AND DEVICES FOR COMPRESSION OF DATA AND TRANSMISSION THEREOF USING VIDEO TRANSMISSION STANDARDS - Systems, devices and methods are implemented for compressing high-definition video content. Consistent with one such implementation, a device is implemented for preparing a media stream containing high-definition video content for transmission over a transmission channel. A receiver unit is arranged to receive the media stream in a high-definition encoding format that does not compress the high-definition video content contained therein. A decoder unit is arranged to decode the media stream. A compression unit is arranged to compress the decoded media stream to produce a compressed media stream. An encapsulation unit is arranged to encapsulate the compressed media stream within an uncompressed video content format. An encoding unit is arranged to encode the encapsulated media stream using the high-definition format to produce a data stream and may be arranged to encrypt the data stream, e.g., using High-Bandwidth Digital Content Protection (HDCP). | 2011-05-05 |
| 20110103473 | Video Compression Under Multiple Distortion Constraints - Video compression is performed under multiple distortion constraints. Video coding includes determining a first set of Lagrangian cost values for multiple coding modes using a first distortion metric, determining a second set of Lagrangian cost values for the multiple coding modes using a second distortion metric, and selecting one of the coding modes base first set of Lagrangian cost values and the second set of Lagrangian cost values to encode a pixel block using the selected coding mode. The distortion metrics can include information associated with video display characteristics such as screen display size, video processing performance, a distortion characteristic, a temporal characteristic, or a spatial characteristic. The distortion metrics can also include characteristics of multiple video displays, such as parameters for usage, importance, design, and the technology type of the video displays. | 2011-05-05 |
| 20110103474 | APPARATUS FOR TRANSFORMING MEDIUM GRAINED SCALABILITY-BASED SCALABLE VIDEO CODING BITSTREAM INTO ADVANCED VIDEO CODING BITSTREAM - A Medium Grained Scalability (MGS)-to-Advanced Video Coding (AVC) transform apparatus may modify an accumulated residual signal of at least one MGS layer of a key picture, included in an MGS-based Scalable Video Coding (SVC) bitstream, and rewrite the MGS-based SVC bitstream into an AVC bitstream. | 2011-05-05 |
| 20110103475 | IMAGE ENCODING METHOD AND DEVICE, AND DECODING METHOD AND DEVICE THEREFOR - A video encoding method and apparatus and a video decoding method and apparatus. In the video encoding method, a first predicted coding unit of a current coding unit that is to be encoded is produced, a second predicted coding unit is produced by changing a value of each pixel of the first predicted coding unit by using each pixel of the first predicted coding unit and at least one neighboring pixel of each pixel, and the difference between the current coding unit and the second predicted coding unit is encoded, thereby improving video prediction efficiency. | 2011-05-05 |
| 20110103476 | INTERPOLATION OF VIDEO COMPRESSION FRAMES - Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame in the sequence as an equal average of brightness values of pixels in non-bidirectionally predicted frames bracketing the sequence of bi-directionally predicted intermediate frames. The brightness values of the pixels in at least one of the non-bidirectionally predicted frames is converted from a non-linear representation. | 2011-05-05 |
