38th week of 2008 patent applcation highlights part 32 |
Patent application number | Title | Published |
20080225868 | Allowing IPv4 clients to communicate using Teredo addresses when both clients are behind a NAT - Methods and systems for allowing clients behind a network address translation device to communicate when those clients are assigned Teredo IPv6 addresses. | 2008-09-18 |
20080225869 | Enabling sharing of devices on a network - A system and method for enabling sharing of devices on a network is disclosed. The technology includes a method for enabling sharing of non-network enabled devices on a network. The method includes detecting a non-network enabled device locally coupled to a first computer system, the first computer system coupled to the network. The method for enabling sharing of non-network enabled devices on a network also includes enabling a second computer system coupled to the network to access the non-network enabled device by using the first computer system as a communication interface between the non-network enabled device and the second computer system. | 2008-09-18 |
20080225870 | Methods, systems, and computer program products for providing predicted likelihood of communication between users - Methods, systems, and computer program products for providing predicted likelihood of communication between users are disclosed. According to one aspect, the subject matter described herein includes a method for providing predicted likelihood of communication between users. The method includes predicting a likelihood that a first user will initiate communication with a second user based on stored information for the first user that indicates the second user, associating the predicted likelihood with status information for the first user, and providing for indicating the status information with the predicted likelihood to the second user. | 2008-09-18 |
20080225871 | SYSTEM AND METHOD FOR BRIDGING PROXY TRAFFIC IN AN ELECTRONIC NETWORK - A system and method are provided of bridging proxy traffic in an electronic network. The method can include the operation of receiving a data stream from a client into a packet scanning device using a first socket. This data stream can be directed to an external communication network. The socket information for the first socket can be cached or stored in a cache in the packet scanning device using a cache ID. The first socket can then be connected to a user space process. A second socket can be generated by the user space process using the cache ID. The second socket can be modified using information retrieved from the cache based on the cache ID to make the second socket emulate the first socket. An additional operation is sending the data stream through the second socket to the external communication network. | 2008-09-18 |
20080225872 | DYNAMICALLY DEFINING QUEUES AND AGENTS IN A CONTACT CENTER - In one embodiment, an automatic call distributor apparatus is provided, including a network interface operable to receive a request for a service, and a processor operable to assign the request to a queue and to associate a number of resources with the queue based upon a determination of at least one dynamic parameter of the queue. Advantageously, resources may be allocated to queues in a flexible, efficient, and dynamic manner. | 2008-09-18 |
20080225873 | RELIABLE NETWORK PACKET DISPATCHER WITH INTERLEAVING MULTI-PORT CIRCULAR RETRY QUEUE - Disclosed is a method and apparatus for managing network data packet transmission. A retry buffer is maintained that includes a single first in, first out retransmission retry buffer. A first data packet is inserted into the retry buffer in response to transmitting the first data packet to a remote node. A determination that a second data packet is not able to be transmitted to the remote node causes the second data packet to be inserted into the retry buffer. A third data packet is retrieved from the retry buffer and a determination that it is not to be transmitted to the remote node causes the third data packet to be reinserted into the retry buffer. | 2008-09-18 |
20080225874 | Stateful packet filter and table management method thereof - A stateful packet filter and a table management method thereof The stateful packet filter includes an index buffer storing a session table index address from a session table, which is searched for determining a session of a received packet when a packet is received; and a table manager updating a state table by using the session table index address, stored in the index buffer, as a state table address value. | 2008-09-18 |
20080225875 | Mapping Discovery for Virtual Network - A virtual network has network interfaces coupled by tunnels ( | 2008-09-18 |
20080225876 | Bifurcate Arbiter - An arbiter for a space switch comprising a two buffers, a media access controller having data outputs coupled to the two buffers, and two control outputs coupled to respective buffers for buffering input data at a clock rate one-half that of the input data and a switch fabric connected to the two buffers for matching buffer data throughput with switch data throughput, the arbiter comprising first and second schedulers, each scheduler includes a plurality of inputs for connection to the two buffers for receiving requests, a plurality of outputs for granting requests and a plurality of inter connections to each of the plurality of schedulers for informing them of grants and logic for logically grouping input ports associated with a bifurcate input port, logically grouping output ports associated with a bifurcate output port, establishing round robin pointers for each of two alternate clock ticks for tracking next allowable requests and on one clock tick allowing connection requests from input ports to output ports and accepting a connection request in dependence upon the grouping of the input and output ports and the round robin pointer. The arbiter can be generalized to an n-furcated switch having n-furcated ports where n is an integer greater than or equal to two. | 2008-09-18 |
20080225877 | SWITCHING APPARATUS AND FRAME EXCHANGING METHOD - A switching apparatus is provided which performs switching of a frame sent from a node, in a system of the switching apparatus and the node having redundant ports. The switching apparatus generates a virtual port based on an external setting signal, relates the redundant ports to the virtual port, and sends the frame to one of the ports of the node related to the virtual port when the frame is destined to the virtual port. | 2008-09-18 |
20080225878 | Spectrum Management in Dynamic Spectrum Access Wireless Systems - A wireless system and method including a medium access control (MAC) layer adapted to transmit and receive spectrum management commands for wireless devices operating in restricted channels. | 2008-09-18 |
20080225879 | METHOD AND SYSTEM FOR REDUCING TRANSCEIVER POWER VIA A VARIABLE SYMBOL RATE - Aspects of a method and system for reducing transceiver power via a variable symbol rate are provided. In this regard, an Ethernet transmitter may be enabled to transmit data at a variable symbol rate, wherein the symbol rate is determined based on a state of a link coupled to said Ethernet transmitter and/or resources available to said Ethernet transmitter. In this regard, link state may comprise one or more of, for example, available bandwidth, bit error rate, packet error rate, and link utilization; and resources may comprise one or more of, for example, power, buffer space, and processor time. Accordingly one or more threshold for link state and/or resources may be determined and the symbol rate may be adjusted when those thresholds are exceeded. Aspects of the invention may enable defining and/or transmitting unique symbols to identify possible symbol rates and/or a change in symbol rate. | 2008-09-18 |
20080225880 | Systems and methods for providing framing mapping, muxing and data processing - A method and system for providing Layer 1 time division multiplexing (TDM) framing, multiplexing, and mapping as well as Layer 2 data and protocol processing. One embodiment of the invention provides an integrated Layer1/Layer2 service aggregator within a single-device. Such an embodiment provides a complete System-on-Chip implementation for clear channel and deeply channelized OC-48 (STM-16), 4×OC12/3 (STM4/1) application of 2,000 channels or more. One embodiment implements functionality of Layer2 data and protocol processing as well as Layer1 TDM framing, multiplexing and mapping. For one embodiment, target applications include packet-based transport systems, multi-service access and metro systems, switches and routers and ADM/MSPP systems. | 2008-09-18 |
20080225881 | METHOD AND SYSTEM FOR REDUCING TRANSCEIVER POWER VIA A VARIABLE SIGNAL CONSTELLATION - Aspects of a method and system for reducing transceiver power via a variable signal constellation are provided. In this regard, an Ethernet PHY device may receive one or more signals indicative of a current state of an Ethernet link to which the PHY device is coupled and/or indicative of resources, such as power, available to the PHY device. Accordingly, a number of points comprising a signal constellation utilized to communicate data via the Ethernet link may vary based on the one or more signals. A current state of the link may comprise a bit error rate, a packet error rate, and/or utilization, in terms of bandwidth for example, of the link. Aspects of the invention may enable controlling, at least in part, power consumption of the PHY device may altering the number of points comprising the signal constellation. | 2008-09-18 |
20080225882 | MULTIPLEXED OPTICAL SIGNAL TRANSMISSION APPARATUS - A transmission apparatus for multiplexing optical signals has a multi-rate signal processing unit that has a plurality of signal processing circuits in advance according to various signal speeds and frame formats and selects a necessary signal processing circuit as necessary. In addition, the transmission apparatus acquires a type code, used to identify the type of the signal of a removable optical module, from the optical module and, from the acquired information, automatically determines the operation mode of the multi-rate signal processing unit, bandwidth allocations according to the signal speeds, and monitoring item contents for different frame formats to eliminate the need for maintenance engineer's work that is otherwise required when a low-speed signal is added. | 2008-09-18 |
20080225883 | Network Device and Network Device Control Method - An object of the present invention is to provide network devices and a network device control method which enable control network devices connected to an IP network, AV devices connected over 1394IF through gateway devices from the IP network, and home devices connected to ECHONET to be controlled without distinction among them. To achieve this object, a network device to serve as a controller comprises a controller application that detects a service of a target network device, using a message complying with an information exchange protocol common to the network, collects information such as an access method for the service, a function name, and parameters, and controls the network device upon request, and an information exchange protocol processing part that exchanges messages according to a protocol common to the network devices. The network device targeted for control comprises service that provides information for the controlling network device to perform control to the controller, and the information exchange protocol processing part. | 2008-09-18 |
20080225884 | Methods and Apparatus for Controlling Audio Characteristics of Networked Voice Communications Devices - Methods and apparatus for controlling the audio characteristics of a networked voice communications device (NVCD) are presented. One method presented includes receiving a settings file, extracting at least one audio control parameter from the settings file, deriving audio processing parameters based upon a value selected from the at least one audio control parameter, and controlling the audio characteristics of the networked voice communications device using the audio processing parameters and the at least one audio control parameter. A method for providing audio parameters to an NVCD is also presented which includes establishing a settings file, which includes at least one audio control parameter, receiving a request to send the settings file, and sending the settings file over a network to the networked voice communications device. | 2008-09-18 |
20080225885 | Dual core crosspoint system - A dual core crosspoint system includes a differential signal core for receiving N differential input channels with common mode voltage removed and providing m differential output channels with m output stages associated with the m output channels; and a common mode core for receiving N common mode voltage input channels derived from the N differential input channels and providing m common mode voltage output channels simultaneously with the m differential output channels. | 2008-09-18 |
20080225886 | SERIAL COMMUNICATION SYSTEM - A serial communication system includes a master processor and a slave processor. A CS signal for requesting a serial communication is output from the master processor, and an OK_INV signal for responding to the CS signal is output from the slave processor. When a CS signal is an active state, the master processor executes a serial communications of a preset number of bits every time that a level of the OK_INV signal is reversed. The slave processor inverts a level of an OK_INV signal in response to the CS signal shifting to the active state. The slave processor changes the level of the OK_INV signal every time that a serial communication of a preset number of bits is completed. | 2008-09-18 |
20080225887 | TRANSPONDER, TRANSMISSION SYSTEM, TRANSMISSION METHOD AND TRANSMISSION PROGRAM - The transponder includes a 64B/66B code synchronization bit determination circuit | 2008-09-18 |
20080225888 | Optimizing return traffic paths using network address translation - In one embodiment, an apparatus comprises logic for optimizing return traffic paths using network address translation (NAT). The logic is operable to receive outbound data from a source node in a source network, and to replace a source address in a source address field in the outbound data with a first address from a first address pool associated with a first connection. The logic is operable to determine that return traffic on the first connection needs to be switched over to a second connection, where a second address pool is associated with the second connection. The logic is operable to generate a mapping that associates the first address with a second address from the second address pool and, based on the mapping, to replace the first address in the source address field in the outbound data with the second address. The logic is also operable to send the outbound data to the destination node over the second connection. | 2008-09-18 |
20080225889 | ADMISSION CONTROL FOR VIRTUALIZED SERVICES IN ROUTERS - In one embodiment, a method includes receiving a request to provision a first customer interface to a service instance, and identifying a resource capacity for a resource associated with a service controller of a system. A determination is made as to whether a sum of resource requirements for a first set of customer interfaces that does not include the first customer interface exceeds the resource capacity. The method further includes provisioning the first customer interface to the service instance if it is determined that the sum of the customer instance resource requirements does not exceed the resource capacity. | 2008-09-18 |
20080225890 | METHOD, COMMUNICATION SYSTEM AND COMMUNICATION UNIT FOR SYNCHRONISATION FOR MULTI-RATE COMMUNICATION - Methods and systems for determining operating bandwidth in a multi-bandwidth communication system are provided. Determining operating bandwidth in a multi-bandwidth communication system includes receiving a signal having a first signal portion at a first, predetermined bandwidth. The signal contains an indication of an operating bandwidth selected from a plurality of bandwidths used for a further signal portion. The indication is recovered from the first signal portion at the predetermined bandwidth. The information is recovered from the further signal portion at the operating bandwidth indicated by the indication. | 2008-09-18 |
20080225891 | FLEXIBLE PDU SIZES FOR UNACKNOWLEDGED MODE RADIO LINK CONTROL - A method for determining an unacknowledged mode radio link control protocol data unit (PDU) size in a wireless transmit receive unit (WTRU) includes the WTRU setting a maximum PDU size, and the WTRU setting a maximum total data transferred size. The PDU size is flexible up to the maximum PDU size. | 2008-09-18 |
20080225892 | Using Forward Error Correction with Generic Stream Encapsulation in a Digital Broadcast Network - Aspects of the invention are directed to using forward error correaction in a digital broadcast network that supports generic stream encapsulation. According to an embodiment, error correaction data is calculated over application data, and the application data and error correaction data are encapsulated in generic stream encapsulation packets. In another embodiment, error correaction data is calculated over generic stream encapsulation packets. In yet another embodiment, error correaction data is calculated over, and encapsulated within, generic stream encapsulation packets. In still another embodiment, error correaction data is calculated over application data packets. | 2008-09-18 |
20080225893 | ACKNOWLEDGED MODE RADIO LINK CONTROL ARCHITECTURE AND METHOD WITHIN EVOLVED HSPA SYSTEMS - An acknowledged mode (AM) radio link control (RLC) architecture and method within evolved high speed packet access (HSPA) are disclosed. The RLC is configured to operate in AM and process protocol data units (PDUs) of flexible size. Specifically, an AM RLC architecture and method in which RLC SDUs are segmented and/or concatenated only at the time of or immediately prior to delivering the PDUs to lower layers. This includes an interface with lower layers in order to support flexible PDU sizes for AM RLC. | 2008-09-18 |
20080225894 | METHOD AND SYSTEM FOR REDUCING TRANSCEIVER POWER VIA A VARIABLE NUMBER OF CHANNELS - Aspects of a method and system for reducing transceiver power via a variable number of channels are provided. In this regard, utilization and/or availability of network and/or device resources may be determined and a configuration of channels utilized for transmitting data may be determined based on the determined utilization and/or availability of resources. Accordingly, the number of channels over which data is communicated may be altered based on determined thresholds for the utilization and/or availability of resources. Moreover, the configuration of channels utilized for communicating data may be dynamically altered by monitoring changes to the utilization and/or availability of resources. For example, the number of channels may be altered based on available bandwidth on one or more channels, based on capacity and/or available space of one or more buffers, and/or based on available power or desired power consumption of a transmitter. | 2008-09-18 |
20080225895 | Apparatus and Method for Generating Signal According to Ifdma, and Apparatus for Receiving Signal - A signal generation apparatus and signal receiving apparatus according to an Interleaved Frequency Division Multiple Access scheme is provided. The signal generation apparatus generates a plurality of complex symbols by digital-modulating a plurality of data symbols, and rotates the generated plurality of complex symbols in a plurality of each different phase angles. The signal generation apparatus generates a plurality of transmission symbols by repeating a plurality of rotated complex symbols at predetermined times, and rotating the repeatedly generated plurality of transmission chips in phase angles of an orthogonal phase sequence for the respective users. When the signal receiving apparatus receives the plurality of transmission symbols generated as described above, the maximum diversity gain may be obtained. | 2008-09-18 |
20080225896 | RECEIVING DEVICE - A clocking circuit of a receiving unit performs a clocking operation synchronously with a network clock. A packet output circuit of the receiving unit outputs a second packet included in a first packet and outputs a control signal indicating normality/abnormality of output timing of the second packet based on a result of comparing a time of the clocking circuit and a time of first time information included in the first packet. A clock adjusting circuit of a processing unit synchronizes, when the second packet includes second time information indicating a time based on a transmitting side reference clock and when the control signal indicates normality, a receiving side reference clock with the transmitting side reference clock based on a result of comparing a time based on the receiving side reference clock and a time of the second time information. | 2008-09-18 |
20080225897 | Providing clock synchronization in a network - In one embodiment, an apparatus for providing clock synchronization in a packet-based network, the network having as components nodes and links therebetween and having a network topology, is arranged to compute a forward clock synchronization packet path to a synchronization destination from the network topology according to a computation rule such that the return path for a clock synchronization packet from the synchronization destination is the same as the forward path. | 2008-09-18 |
20080225898 | Method and apparatus for detecting and compensating for jitter in a communications network - Jitter in a clock signal can cause communications faults in communications networks, such as in networks in which downstream nodes use recovered clock signals as timing for upstream communications. An embodiment of the present invention detects and compensates for jitter in a network by recovering a reference clock associated with communications signals between nodes, such as an Optical Line Terminal (OLT) and Optical Network Terminal (ONT) in a Passive Optical Network (PON). A local clock is synchronized with the reference clock. Jitter induced faults may be detected and compensated for by increasing the synchronization rate, then decreasing the synchronization rate until jitter induced faults begin to occur. A loss or change in a rate of communications errors occurring as a function of the synchronization rate may be monitored and reported to a system operator. Compensating for jitter by adjusting the synchronization rate provides for robust communications between network nodes. | 2008-09-18 |
20080225899 | System and method for the synchronization and distribution of telephony timing information in a cable modem network - A method for synchronizing clocks in a packet transport network. The method comprises, receiving an external network clock at a central packet network node and transmitting timing information to a plurality of packet network devices, the timing information based upon the external network clock. The method further comprises, transmitting and receiving data that is synchronized to the timing information to a plurality of connected packet network devices. And finally, delivery of packets to an external interface via a packet network that contains data synchronized to the external network clock. | 2008-09-18 |
20080225900 | DVB LOW BIT RATE SERVICES - The invention is directed to efficient transfer of low bit rate services in a communication system. A synchronization symbol which has known characteristics may be included as a first symbol of digital broadcast frames. The synchronization symbol, which can be decoded without having to resort to trial and error methods, contains parameters for the rest of the signal. Low bit rate services are allocated to time slots following the pilot symbol used for synchronization allowing for fast access times with maximum power saving capabilities. A user terminal wakes up just before the synchronization symbol and received the data allocated for the low bit rate services. The user terminal may power off for the remaining time slots which are allocated for higher bit services to conserve power. | 2008-09-18 |
20080225901 | Integrated services director (ISD) overall architecture - A video enable answering machine having many new features including customized video announcement messages, caller ID based video announcement messages, and time based video announcement messages. | 2008-09-18 |
20080225902 | MoCA-compliant multiplexer circuit - A multiplexer circuit complies with Multimedia over Coax Alliance (MoCA) specifications and is adapted to be disposed between an input end and an output end. The multiplexer circuit includes a first adapter and a second adapter. The first adapter includes a first high pass filter and a first low pass filter connected in series to the first high pass filter. The second adapter is connected in parallel to the first adapter, and includes a second low pass filter and a second high pass filter connected in series to the second low pass filter. The first high pass filter and the second low pass filter are adapted to be disposed closer to the input end compared to the first low pass filter and the second high pass filter. | 2008-09-18 |
20080225903 | UNSTABLE MONOBLOCK LASER CAVITY WITH INTEGRATED BEAM EXPANDER - A monoblock laser cavity includes a plurality of discrete optical components disposed serially on a substrate and sharing a common optical axis. The optical components include a laser rod of gain material, a Q-switch, an OPO crystal, an output coupler, and a positive lens. The output coupler has a convex input end face and a concave output end face, and acts as the expanding lens element of a beam expander, and the positive lens completes the beam expander to improve the beam quality. | 2008-09-18 |
20080225904 | Laser system - An apparatus/method may comprise a line narrowed pulsed lithography laser light source which may comprise: a seed pulse providing laser system which may comprise: a first pulsed seed laser producing seed pulses at a rate of X kHz; a second pulsed seed laser producing seed pulses at a rate of X kHz; an amplification system which may comprise: a first amplifier gain system which may comprise a first and a second pulsed gas discharge amplifier gain medium, each with a nominal center wavelength in the UV range, and each operating at ½ X kHz on output pulses from the first seed laser; a second amplifier gain system which may comprise a first and a second pulsed amplifier gain medium, each with a nominal center wavelength in the UV range, and each operating at ½ X kHz on output pulses from the second seed laser. | 2008-09-18 |
20080225905 | APPARATUS, METHOD AND PROGRAM FOR IMAGE FORMING - An image forming apparatus includes a scanning unit that deflects and scans a laser beam emitted from a laser beam source, an optical system that guides the laser beam onto a photoconductive drum, a storing unit that stores plural correction patterns that give a series of correction values for correcting an amount of laser beams in one scanning, a selecting unit that selects a correction group including at least two kinds of correction patterns out of the stored correction patterns, a switching unit that switches the at least two kinds of correction patterns belonging to the selected group at predetermined timing, a correcting unit that corrects, on the basis of the correction patterns switched by the switching unit, an amount of laser beams being scanned, and a printing unit that prints, on one medium, plural images formed on the photoconductive drum by laser beams corrected by the respective correction patterns. | 2008-09-18 |
20080225906 | LASER SCANNING MICROSCOPE AND METHOD OF USE - An improved laser scanning microscope and method of use are disclosed that enable polarization anisotropy measurements to be made with greater sensitivity and accuracy. A controllable optical element is provided in a light path between a laser source and a sample, and is controlled so that the sample is alternately irradiated with light beams that are orthogonally polarized. This enables the signal strength to be higher than with previous laser scanning microscopes. Moreover, because the orthogonally polarized light beams that are alternately incident onto a sample may be switched at a high rate, a reduction may be achieved in the influence of molecular motion within a sample in which high speed biological reactions are observed. | 2008-09-18 |
20080225907 | AUTO-STABILIZATION OF LASERS BY MEANS OF RESONANT STRUCTURES - Apparatus, systems, and methods are provided that utilize a material inserted into a laser cavity such the material has an optical length that varies as the laser cavity varies to keep the repetition rate constant. The material may provide auto-stabilization of the optical output form the laser cavity. | 2008-09-18 |
20080225908 | Laser system - An apparatus/method which may comprise a line narrowed pulsed excimer or molecular fluorine gas discharge laser system which may comprise a seed laser oscillator producing an output comprising a seed laser output light beam of pulses which may comprise a first gas discharge excimer or molecular fluorine laser chamber; a line narrowing module within a first oscillator cavity; a laser amplification stage containing an amplifying gain medium in a second gas discharge excimer or molecular fluorine laser chamber receiving the output of the seed laser oscillator and amplifying the output of the seed laser oscillator to form a laser system output comprising a laser system output light beam of pulses, which may comprise a ring power amplification stage; a seed injection mechanism. | 2008-09-18 |
20080225909 | LASER LIGHT SOURCE DEVICE, OPTICAL INFORMATION RECORDING DEVICE, AND OPTICAL INFORMATION REPRODUCING DEVICE - The hologram recording technology expected to realize ultrahigh-density information recording is one of the post Blu-ray Disc technology. When we think about developing a drive based on this technology and suitable for consumer electronics, it is considered most desirable from the viewpoint of upward compatibility to solve the problem of the BD-compatibility. The problem in sharing the laser light source between the hologram recording device and the current optical disc device, however, is that the hologram recording requires a high-coherent, single-mode light beam, while the current optical discs requires a low-coherent, multi-mode light beam. In point of the coherence of the light source, the above two cases require the light beams of the characteristics opposite to each other, and this presents an important task. | 2008-09-18 |
20080225910 | LASER DRIVER BIAS CURRENT CALIBRATION - A method for a calibration module to calibrate laser bias current in an optical transceiver. The method comprises causing the calibration module to configure a control module of the optical transceiver for a calibration operation, causing the calibration module to determine a laser bias current monitored by the control module, and determining one or more calibration factor values that cause the laser bias current monitored by the control module to substantially match a laser bias current as measured by an external test meter. | 2008-09-18 |
20080225911 | WAVELENGTH DETECTOR, WAVELENGTH STABILIZATION LASER DEVICE, AND IMAGE DISPLAY DEVICE - A wavelength detector capable of distinguishing between the changes of a transverse mode and of a longitudinal mode of a laser light and thus detecting the change of the wavelength of the laser light with high accuracy is provided. In a wavelength detector | 2008-09-18 |
20080225912 | Solar Light Pumped Laser and Cooling Method of Solar Light Pumped Laser - A solar light pumped laser performing laser oscillation by pumping a laser medium with solar light, the solar light pumped laser including, a laser medium | 2008-09-18 |
20080225913 | Semiconductor Laser Device - A semiconductor laser device has at least one semiconductor laser element, a heat sink having a first bearing area, on which the at least one semiconductor laser element bears, a housing upper part and a housing lower part, which, in the interconnected state, can at least partly surround the semiconductor laser element, and also a sealing for the tight connection of housing upper part and housing lower part. The heat sink services as housing lower part. | 2008-09-18 |
20080225914 | SYSTEM OF METHOD FOR DYNAMIC RANGE EXTENSION - The present invention generally relates to the operation of optical network equipment such as optical amplifiers. In one aspect, a method of operating an optical amplifier is provided such that output of the optical amplifier avoids the effects of operating an optical gain medium in a non-linear (kink) region of an L-I curve. The method generally includes operating an optical gain medium in a fully off state or fully on state above the kink region with a PWM signal. In another aspect, the effects of the kink region may be compensated for by utilizing a lookup table. A sample of the optical power of an amplified optical signal may be used to select an entry in the lookup table that compensates for non-linearities in the kink region. In yet a further aspect, a lookup table may be used to control a pulse modulator to compensate for non-linearites in the kink region of the L-I curve. | 2008-09-18 |
20080225915 | Method and Apparatus for Prevention of Laser Saturation - A method and apparatus for preventing laser current saturation ( | 2008-09-18 |
20080225916 | Excessive current input suppressing semiconductor laser light emitting circuit - A semiconductor laser light emitting circuit includes a semiconductor laser diode emitting a laser light by modulating a current supplied thereto, a light intensity detection circuit that detects the laser light and generates a voltage, and a voltage-current conversion circuit converting a voltage into a current supplied to the laser diode. A S/H capacitance is provided to store electric charge and output a voltage to the voltage/current conversion circuit. A first operational amplifier is provided to output a first current charging the S/H capacitance. A rapidly charging circuit is provided to charge the S/H capacitance with a second current. The rapidly charging circuit terminates charging when the voltage is equal to or more than a second reference voltage. | 2008-09-18 |
20080225917 | Laser Processing Apparatus and Solid Laser Resonator - To provide a laser processing apparatus compatible with increase in the output of the pumping light source without increasing the reflectance of the output mirror. A solid laser medium for generating laser oscillation when pumping light from an pumping light source enters through two end surfaces, a splitting part for splitting pumping light outputted from the pumping light source into two paths so that the respective pumping components of pumping light enter through the respective end surfaces of the solid laser medium along the respective split paths, dichroic mirrors which are arranged along the split paths in such a manner as to face the respective end surfaces, allow pumping light to transmit and reflect laser oscillation light toward the end surface sides, and condenser lenses which are arranged along the split paths in such a manner as to face the dichroic mirrors and condense pumping light that transmits through the dichroic mirrors so that the diameter of the spot where the end surfaces of the solid laser medium are irradiated is smaller than in the TEM | 2008-09-18 |
20080225918 | INDEX GUIDED SEMICONDUCTOR LASER WITH LOSS-COUPLED GRATINGS AND CONTINUOUS WAVEGUIDE - A system and a method of manufacture for a semiconductor laser with a continuous waveguide ridge extending the length of the laser. The continuous waveguide ridge is positioned through the center of the optical components of the semiconductor laser. The optical components including the waveguide ridge may be distributed Bragg reflectors (DBRs), outcoupling gratings, and phase controllers. The illustrated embodiments include lateral-grating grating-stabilized edge-emitting lasers and lateral-grating grating-stabilized surface-emitting (GSE) lasers. Both loss-coupled and non-loss-coupled lateral-grating components are illustrated. | 2008-09-18 |
20080225919 | Power Semiconductor Laser with Low Divergence and Low Astigmatism, and Method for the Production Thereof - The present invention relates to a high-power semiconductor laser having low divergence and low astigmatism, this laser being including, in an active layer, a first part in the form of a narrow monomode stripe with transverse index guiding terminating in a second part flaring out from the first part, also with transverse index guiding. | 2008-09-18 |
20080225920 | SEMICONDUCTOR LASER DIODE APPARATUS AND METHOD OF FABRICATING THE SAME - A semiconductor laser diode apparatus capable of suppressing variation in an emission position and an emission direction of a laser beam emitted from a semiconductor laser diode element is obtained. This semiconductor laser diode apparatus includes a semiconductor laser diode element having warping along either a first direction in which a cavity extends or a second direction intersecting with the first direction and a base on which a convex side of the warping of the semiconductor laser diode element is fixed, wherein a distance between a first end of the semiconductor laser diode element in a direction of larger warping among the first and second directions and the base is smaller than a distance between a second end of the semiconductor laser diode element in the direction of the large warping among the first and second directions and the base. | 2008-09-18 |
20080225921 | Projection Exposure System, Beam Delivery System and Method of Generating a Beam of Light - A beam delivery system of a projection exposure system comprises a laser generating a beam of laser light from a plurality of longitudinal laser modes in a cavity, wherein light generated by a single longitudinal laser mode has an average line width λ | 2008-09-18 |
20080225922 | Rod-Type Solid-State Laser System - In a symmetrically stable optical resonator, a first reference plane is set at an arbitrary position between the end face ( | 2008-09-18 |
20080225923 | UNSTABLE MONOBLOCK LASER CAVITY - A monoblock laser cavity includes a plurality of discrete optical components disposed serially on a substrate and sharing a common optical axis. The optical components include a laser rod of gain material, a Q-switch, an OPO crystal, and an output coupler. The output coupler has at least one convex end face to improve the beam quality. | 2008-09-18 |
20080225924 | Melting Furnace with an Inductor Device with a Single Loop Consisting of a Plurality of Conductors - The inductor of a melting furnace also comprising a crucible, consists of parallel but oblique conductors and forming a wave around the crucible, with at least one descending portion ( | 2008-09-18 |
20080225925 | System and Method for Non-Intrusive Thermal Monitor - Embodiments disclosed herein provide a non-intrusive thermal (NIT) monitor for sensing temperatures useful for semiconductor manufacturing applications. In some embodiments, a NIT monitor comprises a thermopile, a fluid housing with a fluid window, and an elongated member positioned between the thermopile and the fluid window for transmitting or reflecting infrared signals corresponding to a temperature of a fluid in the fluid housing. The fluid housing may have a cross-sectional profile to enable the manipulation of the fluid flow under the fluid window, enhancing the speed and accuracy of the temperature sampling. The elongated member, which may be hollow and coated with gold, may an extended piece of the fluid housing or a part of an optics housing. In some embodiments, the NIT monitor is connected to a main conditioning circuit board via a cable for processing the temperature measurements at a remote location. | 2008-09-18 |
20080225926 | IN SITU OPTICAL SURFACE TEMPERATURE MEASURING TECHNIQUES AND DEVICES - A vacuum processing chamber for measuring the temperature of a surface of an object comprising a cap is provided. The cap has a non-deformable end wall of thermally conducting material and a side wall connected thereto. An outside surface of the end wall is shaped to conform to a shape of the object surface to be measured. A surface on an inside of the end wall of the cap emits electromagnetic radiation having a detectable optical characteristic that is proportional to the temperature of the cap end wall. The vacuum processing chamber further comprises a light wave guide having one end held within the cap a distance from the radiation emitting element and in optical communication therewith. | 2008-09-18 |
20080225927 | Transmission method - In a transmission method of the present invention, when transmitting an information bit from a transmitter to a receiver, an encoder of the transmitter firstly inputs and encodes the information bit, and a modulator then modulates the encoded information bit to create a modulation symbol. A spreader spreads the obtained modulation symbol using a rotation orthogonal code having a rotation angle that is appropriate to a combination of the modulation method and the coding rate, and transmits it to a transmission path. The receiver performs a reverse operation of the transmitter, and decodes the information bit. In QPSK modulation where the coding rate of an error-correction code is ½, when a rotation angle that obtains a same signal point as OFDM is 0°, spreading is performed using a rotation orthogonal code having a rotation angle of between 17° and 45°, or between −17° and −45°, thereby reducing bit error and enabling highly-reliable communication to be achieved. | 2008-09-18 |
20080225928 | Pseudorandom Noise Code Acquisition in Direct Sequence Spread Spectrum Systems - A method for receiving spread spectrum signals and for initial code acquisition from the received signals comprises de-spreading the received signals, based on code phase synchronization, to produce a de-spread signal; and performing a modulation detection based on a change of time-domain characteristic of the de-spread signal. | 2008-09-18 |
20080225929 | Closed Form Calculation of Temporal Equalizer Weights Used in a Repeater Transmitter Leakage Cancellation System - A repeater environment is provided to operatively deploy a feedback cancellation loop that performs closed loop calculations for weights used by a feedback equalizer to improve signal integrity and amplification. In an illustrative implementation, an exemplary repeater environment comprises a transmitter, a receiver, an equalized feedback cancellation loop circuitry operative to perform one or more closed form calculations for equalizer weights. In the illustrative implementation, the feedback cancellation loop can comprise a calculation module operative to perform one or more closed form weight calculations using linear algebraic techniques as part of feedback signal cancel operations for use by the N tap feedback equalizer canceller. | 2008-09-18 |
20080225930 | Use of a Filterbank in an Adaptive On-Channel Repeater Utilizing Adaptive Antenna Arrays - A repeater environment is provided operative to deploy a feedback cancellation loop that is adaptively coupled with an antenna array such that a selected metric can be derived by deploying a selected filter bank operative to process the signal on a bin by bin basis and the derived metric can be applied to the antenna array and feedback cancellation loop combination to improve signal integrity and amplification. In an illustrative implementation, an exemplary repeater environment comprises, a transmitter, a receiver, an equalized feedback cancellation loop circuitry comprising a filter bank, the cancellation loop being operatively coupled to an antenna array. In the illustrative implementation, the feedback cancellation loop can receive signals as input from a cooperating antenna array and provide output signals such as a feedback leakage signal to a cooperating antenna array. | 2008-09-18 |
20080225931 | Use of Adaptive Antenna Array in Conjunction with an On-Channel Repeater to Improve Signal Quality - A repeater environment is provided to deploy a feedback cancellation loop that is adaptively coupled with an antenna array such that a selected metric can be derived by deploying a one or more of selected metrics (e.g., composite metrics) comprising a selected filter bank operative to process the signal on a bin by bin basis and the derived metric can be applied to the antenna array and feedback cancellation loop combination to improve signal integrity and amplification, beam forming operations, and pilot control and overhead channel control operations. In an illustrative implementation, an exemplary repeater environment comprises, a transmitter, a receiver, an equalized feedback cancellation loop circuitry comprising a filter bank, the cancellation loop being operatively coupled to an antenna array. In the illustrative implementation, the feedback cancellation loop can receive signals as input from a cooperating antenna array and provide output signals such as a feedback leakage signal to a cooperating | 2008-09-18 |
20080225932 | DATE TRANSMISSION DEVICE - A data transmission device for sending back data on a reflected wave of an unmodulated carrier, the data transmission device includes: an antenna adapted to receive an unmodulated carrier Fo from a data reader with which data is to be exchanged and send a reflected wave of the unmodulated carrier Fo to the data reader; subcarrier oscillation means for generating a subcarrier frequency Fs; subcarrier modulation means for digitally modulating sending data on the subcarrier Fs; D/A conversion means for generating the analog modulated subcarrier wave Fs by converting a digital modulated signal, generated by the subcarrier modulation means, into analog form; and frequency mixing means for mixing the unmodulated carrier Fo and modulated subcarrier wave Fs to generate new modulated waves Fo+Fs and Fo−Fs. | 2008-09-18 |
20080225933 | PROTOCOL-AGNOSTIC AUTOMATIC RATE NEGOTIATION FOR HIGH-SPEED SERIAL INTERFACE IN A PROGRAMMABLE LOGIC DEVICE - Automatic rate negotiation logic for a high speed serial interface in a programmable logic device determines whether multiple occurrences of a single-bit transition (i.e., a data transition from “0” to “1” to “0” or from “1” to “0” to “1”) occur within a predetermined time interval on a data channel of a high-speed serial interface. The interval preferably is selected such that multiple occurrences of a single-bit transition mean that the data channel is operating in full-rate mode. The rate negotiation logic may share a phase detector with clock data recovery circuitry in the interface. The phase detector may be a bang-bang phase detector specially adapted to detect single-bit transitions. | 2008-09-18 |
20080225934 | METHOD FOR DETERMINING A CORRECTED VARIANCE REPRESENTATIVE OF THE CONDITION OF RECEPTION OF SIGNALS REPRESENTATIVE OF SYMBOLS - The present invention concerns a method for determining a corrected estimated variance representative of the condition of reception of signals representative of symbols transferred by an emitter to a receiver through a communication channel, wherein the method comprises the step, executed by the receiver, of producing an estimation of the variance by a Wiener channel estimator comprising a linear filter of which coefficients are determined at least from a given average signal to interference plus noise ratio value, the method being characterised in that it comprises farther step, executed by the receiver, of:
| 2008-09-18 |
20080225935 | Method and architecture for digital pulse shaping and rate conversion - A method and architecture for pulse shaping are provided. The architecture includes a pulse shaping filter having a plurality of memory elements and a plurality of taps connected to the plurality of memory elements wherein a total number of the plurality of taps is independent of a sampling rate. The pulse shaping filter further includes a selector configured to select outputs from the plurality of taps to define a pulse shaped output. | 2008-09-18 |
20080225936 | FREQUENCY DOMAIN EQUALIZATION FOR TIME VARYING CHANNELS - Systems and methods for a wireless communication system are provided. The method includes estimating a time-variation of a channel through which the wireless communication system transmits. This also includes decreasing the estimated time-variation of the channel from a signal transmitted by the wireless communications system. | 2008-09-18 |
20080225937 | METHOD AND SYSTEM OF PROVIDING A HIGH SPEED TOMLINSON-HARASHIMA PRECODER - Herein described are at least a method and a system for implementing a high speed Tomlinson-Harashima Precoder. The method comprises using an L-tap transpose configuration of a Tomlinson-Harashima Precoder and processing a first discrete time sampled sequence using said L coefficients and L state variables by clocking the L-tap Tomlinson-Harashima Precoder using a clock signal wherein the clock signal has a clock rate equal to one half the symbol rate of the discrete time sampled sequence. In a representative embodiment, an L-tap Tomlinson-Harashima Precoder comprises a single integrated circuit chip, wherein the integrated circuit chip comprises at least one circuitry for processing a discrete time sampled sequence using L coefficients and L state variables by way of clocking the discrete time sampled sequence using a clock signal having a clock rate that is one half the symbol rate of the discrete time sampled sequence. | 2008-09-18 |
20080225938 | DIGITAL PULSE FREQUENCY/PULSE AMPLITUDE (DPFM/DPAM) CONTROLLER FOR LOW-POWER SWITCHING-POWER SUPPLIES - A digital controller for dc-dc switching converters can operate under light load conditions. The controller can be suitable for the use in switch-mode power supplies providing regulated output voltage for handheld devices and other low-power electronics. To create long time intervals, compared to the propagation time of digital logic a DPFM/DPAM can use a ring oscillator with two sets of delay cells and two signals racing around the ring. | 2008-09-18 |
20080225939 | MULTIFUNCTIONAL VIDEO ENCODING CIRCUIT SYSTEM - The present invention discloses a multifunctional video encoding circuit system capable of performing six types of operations: addition, subtraction, multiplication, multiply-accumulation, interpolation, and absolute difference summation. A partial product generation part, a partial product reduction part and an accumulation part of the circuit system are equipped with a virtual power suppression unit each for reducing the power consumption of the partial product generation part, the partial product reduction part and the accumulation part, so as to reduce the power consumption of the multifunctional video encoding circuit system. | 2008-09-18 |
20080225940 | DIGITAL VIDEO APPARATUS AND METHOD THEREOF FOR VIDEO PLAYING AND RECORDING - A digital video apparatus and method thereof are disclosed. The digital video apparatus includes: a first decoder, for receiving an input video signal and decoding the input video signal to generate a transformed video signal; a processor, for processing the transformed video signal, and accessing the transformed video signal in a storage device; and a first encoder, for receiving the transformed video signal, encoding the transformed video signal and outputting an encoded transformed video signal. | 2008-09-18 |
20080225941 | MOVING PICTURE CONVERTING APPARATUS, MOVING PICTURE TRANSMITTING APPARATUS, AND METHODS OF CONTROLLING SAME - Moving-picture-with-audio data suitable for reproduction at a terminal device is generated rapidly. Image data, which represents a moving picture from which audio has been removed, and audio data are extracted from moving-picture-with-audio data by an image extracting unit and audio extracting unit. The items of extracted image data and audio data are respectively converted by an image converting unit and audio converting unit to image data and audio data having formats of a plurality of types suitable for reproduction and output by every model of terminal device. The items of image data and audio data obtained by the conversions are stored in an image database and audio data base, respectively. When the moving-picture-with-audio data is to be transmitted, items of image data and audio data suited to a terminal device to which the transmission is to be made are read out and the moving-picture-with-audio data is generated. The moving-picture-with-audio data thus generated is transmitted to the terminal device to which the transmission is to be made. | 2008-09-18 |
20080225942 | Contents reproducing apparatus - A contents reproducing apparatus includes a receiving unit configured to receive a first packet having an ES in which encoded video or audio data is stored, and a second packet having the ES and a PCR, a counter configured to count a STC and output the counted STC as a STC value, a buffer configured to store the first and second packets in an order of reception in a time shift reproduction mode and a time shift storage mode, a correcting unit configured to correct the PCR included in the second packet received by the receiving unit by using the STC value and output the corrected PCR, in the time shift reproduction mode, and a control unit configured to control the STC in accordance with the corrected PCR and the STC value, in the time shift reproduction mode. | 2008-09-18 |
20080225943 | SINGLE PASS VARIABLE BIT RATE CONTROL STRATEGY AND ENCODER FOR PROCESSING A VIDEO FRAME OF A SEQUENCE OF VIDEO FRAMES - An encode control strategy is provided for variable bit rate encoding of a sequence of video frames in a single pass. The control strategy includes determining whether a video frame has a complexity level statistically outside a defined range from a complexity level of at least one preceding frame of the sequence of video frames, and if so, determining a new average bit rate target for the video frame. The new average bit rate for the video frame is determined employing at least one of spatial complexity and temporal complexity of the video frame. The new average bit rate target for the video frame is used to set frame level bit rate control parameter(s), and the video frame is encoded using the set frame level bit rate control parameter(s). | 2008-09-18 |
20080225944 | Allocation of Available Bits to Represent Different Portions of Video Frames Captured in a Sequence - A technique of encoding video frames allocates an available number of bits to different portions of the video frame. A processing unit identifies a region of interest (ROI) in a video frame, and computes a first and second complexity parameter respectively representing the change in video information in the ROI portions and non-ROI portions in the video frame relative to a reference frame. Bits are allocated to the ROI portion proportional (positive correlation) to the first complexity parameter and a ratio of the area of the ROI to the area of the frame. The remaining available bits are allocated to the non-ROI. In an embodiment, the bits are encoded according to H.264 standard. | 2008-09-18 |
20080225945 | Constant-quality rate control system and algorithm for regions of interest - A constant-quality rate control system and algorithm for multiple encoders with a single video source are disclosed. The system comprises a base encoder, a region of interest (ROI) detector, and at least one ROI encoder. The base encoder encodes a base video sequence which is a down-sampled version of a video sequence and sends the base video sequence to a multiplexer. The ROI detector extracts an ROI video sequence from the original video sequence. The ROI encoder encodes the ROI video sequence and sends it to the multiplexer. The ROI encoder uses information obtained during encoding of the base video sequence to improve the encoding of the ROI video sequence. The information of the base video sequence are used to better control the bit-rate and the quality of the ROI video sequence, | 2008-09-18 |
20080225946 | Error Concealment Technique Using Weighted Prediction - A decoder ( | 2008-09-18 |
20080225947 | QUANTIZATION FOR HYBRID VIDEO CODING - Method for coding a video signal using hybrid coding, comprising: reducing temporal redundancy by block based motion compensated prediction in order to establish a prediction error signal; performing quantization samples of the prediction error signal or on coefficients resulting from a transformation of the prediction error signal into the frequency domain to obtain quantized values, representing quantized samples or quantized coefficients respectively; calculating a quantization efficiency for the quantized values; calculating a zero efficiency for a quantization, when the quantized values are set to zero; selecting the higher efficiency; and maintaining the quantized values or setting quantized values to zero, for further proceeding, depending on the selected efficiency. | 2008-09-18 |
20080225948 | Method of Data Reuse for Motion Estimation - A so-called inter-macroblock parallelism is proposed for motion estimation. First, pixel data of one of the consecutive candidate blocks in an overlapped region of search windows of current blocks in a reference frame including reference blocks corresponding to the current blocks are read and transferred to a plurality of processing element (PE) arrays in parallel. The plurality of PE arrays are used to determine the match situation of the current blocks and the reference blocks. Then, the above process is repeated for the rest of the candidate blocks in sequence. For example, if there are four current blocks CB | 2008-09-18 |
20080225949 | VIDEO ENCODING METHOD, VIDEO DECODING METHOD, VIDEO ENCODING APPARATUS, VIDEO DECODING APPARATUS, VIDEO ENCODING PROGRAM, AND VIDEO DECODING PROGRAM - A video processing system is provided with video encoding apparatus | 2008-09-18 |
20080225950 | Scalable architecture for video codecs - In one embodiment, a method for parallel processing of blocks in a decoding process is provided. A plurality of blocks for a picture is received. The picture may have the plurality of blocks arranged in a first order. The blocks in the plurality of blocks may be pre-processed to determine data dependency information for blocks. In one embodiment, the blocks in the picture are all pre-processed to determine the data dependency information for every block in the picture if possible. Blocks that do not have data dependencies are then determined and sent for parallel processing in processing units. Also, blocks that still have data dependencies are not processed until the data dependency information becomes available. For example, an inter-coded block may be decoded and information for the decoded block is used to decode the intra-coded block. At this point, these blocks may be sent for processing in the processing units. | 2008-09-18 |
20080225951 | Video processing system and device with encoding and decoding modes and method for use therewith - A video processing device operates in an encoding mode when a mode selection signal has a first value and operates in a decoding mode when the mode selection signal has a second value. The encoding mode utilizes a plurality of function specific hardware engines that each perform a specific coding function and the decoding module utilizes at least one of the plurality of hardware engines. | 2008-09-18 |
20080225952 | SYSTEM AND METHOD FOR PROVIDING IMPROVED RESIDUAL PREDICTION FOR SPATIAL SCALABILITY IN VIDEO CODING - A system and method for providing improved residual prediction for spatial scalability in video coding. In order to prevent visual artifacts in residual prediction in extended spatial scalability (ESS), each enhancement layer macroblock is checked to determine if the macroblock satisfies a number of conditions. If the conditions are met for an enhancement layer macroblock, then it is likely that visual artifacts will be introduced if applying residual prediction on the macroblock. Once such locations are identified, various mechanisms may be used to avoid or remove the visual artifacts. | 2008-09-18 |
20080225953 | BANDWIDTH ADAPTIVE STREAM SELECTION - An apparatus and corresponding method are provided for selecting one of several alternate input streams for transmission, the method including determining bandwidth requirements for each of the alternate input streams, measuring bandwidth currently available for transmission, and selecting for transmission one of the alternate input streams that has the highest determined bandwidth requirement less than or equal to the measured bandwidth currently available for transmission. | 2008-09-18 |
20080225954 | IMAGE DECODING APPARATUS AND IMAGE DECODING METHOD - The invention includes: a bitstream updating output unit configured to receive a bitstream and update a syntax element located at a beginning of the bitstream according to a code length thereof and outputs the syntax element; a bitstream decoding unit configured to decode, in response to a decode request, a variable-length code of the syntax element outputted from the bitstream updating output unit; a zerosLeft updating unit configured to update zerosLeft based on a specific syntax element decoded by the bitstream decoding unit; a run_before remaining number updating unit configured to update a run_before remaining number based on a specific syntax element decoded by the bitstream decoding unit; and a syntax selection unit configured to select a syntax element to be decoded by the bitstream decoding unit. Thus, multiple zero run_before syntaxes and one non-zero run_before syntax, or multiple zero run_before syntaxes are decoded all at once. | 2008-09-18 |
20080225955 | SYSTEM AND METHOD FOR VIDEO ENCODING AND DECODING - A video coding method comprises dividing a coefficient vector into two or more sub-vectors, each sub-vector having a length less than or equal to a length of the coefficient vector, indicating a size of each sub-vector and a position of each sub-vector within the coefficient vector, and forming a block corresponding to each sub-vector | 2008-09-18 |
20080225956 | Picture Decoding Device and Method - A picture decoding device ( | 2008-09-18 |
20080225957 | Dynamic packet size control for MPEG-4 data partition mode - A dynamic AC prediction technique is implemented in a data partition mode which automatically disables AC prediction for encoding the current macroblock in the next packet when packet overflow occurs. Otherwise, when there is no overflow, AC prediction remains enabled to maintain compression efficiency. More particularly, in the preferred embodiment, a determination is first made whether a macroblock causes a packet overflow if it is encoded in the current packet. If so, a new packet is initiated into which the macroblock is encoded without AC prediction as the first macroblock. Otherwise, the macroblock with AC prediction remains in the current packet and a new macroblock is encoded. | 2008-09-18 |
20080225958 | METHOD AND APPARATUS FOR DECODING DATA IN RECEIVER OF A DIGITAL BROADCASTING SYSTEM - An apparatus and method for decoding data in a digital broadcasting receiver are disclosed, in which first payload data obtained by RS decoding of input RS packet data is buffered in a first buffer, packet data failed in the RS decoding is buffered in a second buffer, an erasure RS decoding is performed on the first payload data using erasure information indicating whether the first payload data has errors and if the first payload data has errors, indicating the positions of the errors, payload data failed in the erasure RS decoding is overwritten on payloads of the packet data buffered in the second buffer, second payload data obtained by RS decoding of the overwritten packet data is overwritten in the first buffer, an erasure RS decoding is performed on the second payload data buffered in the first buffer, and the RS decoding and erasure RS decoding are repeated until errors of the second payload data are corrected. | 2008-09-18 |
20080225959 | METHOD AND SYSTEM FOR MULTIPLE PASS VIDEO CODING - A real-time MPEG video coding system with information look-ahead for constant bit rate (CBR) applications, such as, for example, Video-on-Demand (VoD) over ADSL. This scheme employs two MPEG encoders. The second encoder has a buffer to delay the input by an amount of time relative to the first encoder to create a look-ahead window. In encoding, the first encoder collects the information of statistics and rate-quality characteristics. An on-line information processor then uses the collected information to derive the best coding strategy for the second encoder to encode the incoming frames in the look-ahead window. The second encoder uses the encoding parameters from the processor as the coding guide to execute the coding strategy and generate the final bitstream. | 2008-09-18 |
20080225960 | Generalized reference signaling scheme for MU-MIMO using arbitrarily precoded reference signals - A multi-user MIMO downlink beamforming system ( | 2008-09-18 |
20080225961 | APPARATUS AND METHOD TO ESTIMATE SAMPLING OFFSET - A sampling offset estimation apparatus including a pilot sub-carrier refiner, an information sub-carrier refiner, a data sub-carrier refiner, and a sampling offset estimator. The pilot sub-carrier refiner to refine a pilot sub-carrier extracted from a differential demodulated signal, and to generate a reference pilot sub-carrier. The information sub-carrier refiner to refine an information sub-carrier extracted from the differential demodulated signal, and to generate a reference information sub-carrier. The data sub-carrier refiner to refine a data sub-carrier extracted from the differential demodulated signal, and to generate a reference data sub-carrier. The sampling offset estimator to estimate a sampling offset included in the differential demodulated signal, on a basis of the reference pilot sub-carrier, the reference information sub-carrier, and the reference data sub-carrier. | 2008-09-18 |
20080225962 | APPARATUS FOR GENERATING PRECODING MATRIX CODEBOOK FOR MIMO SYSTEM AND METHOD OF THE SAME - An apparatus for generating a precoding matrix codebook includes a matrix group generator to generate a first group of unitary matrices based on a vector-based codebook for precoding of a multiple input multiple output (MIMO) communication scheme; a matrix group extender to extend the first group of unitary matrices to generate a second group of unitary matrices; and a matrix group selector to select a group of columns corresponding to a communication rank from each of the unitary matrices that are elements of the second group so that the columns are optimized based on a distance between the columns corresponding to the communication rank. | 2008-09-18 |
20080225963 | Ultra-wideband communication systems and methods - Systems and methods of ultra-wideband communication are provided. In one embodiment, an ultra-wideband communication system divides a stream of data conveying symbols into a plurality of unspread substreams. A common spreading code is generated at the ultra-wideband transmitter, and each of the unspread substreams are spread using the common spreading code to form a plurality of spread substreams. The spread substreams are combined to form a composite signal that is transmitted. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the subject matter of the disclosure contained herein. This Abstract is submitted with the explicit understanding that it will not be used to interpret or to limit the scope or the meaning of the claims. | 2008-09-18 |
20080225964 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING FORWARD SHARED CONTROL CHANNEL IN A MOBILE COMMUNICATION SYSTEM - A method is provided for transmitting a downlink shared control channel including a control signal necessary for restoring a transmission data signal in a mobile communication system that transmits a data signal using multiple antennas. It is determined whether the transmission data signal is coded with two or more codewords before being transmitted. One of a first element index of a sub-codebook configured only with a one codeword-dedicated precoding in a precoding codebook and a second element index of a sub-codebook configured only with a more-than-two codeword- dedicated precoding is selected, according to the determination result. A control channel is generated by including the selected element index in the precoding information. The generated control channel is mapped to a particular resource block and the mapped control channel is transmitted to a particular reception apparatus. | 2008-09-18 |
20080225965 | METHODS AND APPARATUS TO IMPROVE PERFORMANCE AND ENABLE FAST DECODING OF TRANSMISSIONS WITH MULTIPLE CODE BLOCKS - A method includes separating resource elements from multiple code blocks into different groups, and decoding the code bits of the resource elements within each group without waiting for a completed reception of a transport block to start decoding. | 2008-09-18 |
20080225966 | Method and Apparatus for Improving MIMO Operation in a Wireless Communications System - In order to improve Multi-input Multi-Output (MIMO) operation, the present invention provides a method of improving MIMO operation for a user equipment (UE) in a wireless communications system. The method includes receiving a first value according to a number of hybrid automatic repeat request (HARQ) processes in a HARQ procedure for the UE, receiving a first HARQ process identifier corresponding to a primary transport block, and assigning a second HARQ process identifier corresponding to a secondary transport block to be equal to (H+(N/2)) mod (N), wherein H represents the first HARQ process identifier, mod represents modulus arithmetic, and N represents the first value. | 2008-09-18 |
20080225967 | METHOD AND APPARATUS FOR MIMO CHANNEL ESTIMATION USING TDS-OFDM IN DOWNLINK TRANSMISSION IN THE TIME DOMAIN - In an orthogonal frequency division multiplexing (OFDM) multiple-input multiple-output (MIMO) wireless communication system, a method is provided. In the OFDM MIMO wireless communication system, both a transmitter and a receiver include a plurality of antennas. The method comprising the step of: a receiver using at least one pseudo noise (PN) to correlate desired information relating to a received symbol; and performing channel estimation using the correlated information. | 2008-09-18 |