37th week of 2008 patent applcation highlights part 32 |
Patent application number | Title | Published |
20080219306 | Laser Power Algorithm for Low Power Applications - A system and method to minimize the power consumed by a light source. The power of a light source in controlled in response to a determination of the quality of the received data in order to optimize a reduction in power consumption. If the quality of the received data is sufficient, then the laser power can be reduced in order to save power. | 2008-09-11 |
20080219307 | Single-Mode Photonic-Crystal Vcsels - This specification discloses a VCSEL (Vertical-Cavity Surface-Emitting Laser) device with single-mode output and optionally single polarization output. This device is given by lateral mode confinement by the PBG (Photonic Band-Gap) effect by shallow etching in a partial VCSEL top mirror. The PBG area encircles a MS-region (Mode-Shaping region), which is characterized by large longitudinal mode losses. The MS-region encircles the LA-region (Light Aperture region), which is characterised by low longitudinal mode losses. The MS-region does not contribute to the lateral mode-confinement to the LA-aperture, and the lateral modes confined by the PBG area. The VCSEL is thus optimized for single fundamental mode operation. | 2008-09-11 |
20080219308 | Quantum cascade laser - A quantum cascade laser is composed of a semiconductor substrate, and an active layer provided on the semiconductor substrate and having a cascade structure formed by multistage-laminating unit laminate structures | 2008-09-11 |
20080219309 | METHOD OF FABRICATING SEMICONDUCTOR LASER DIODE APPARATUS AND SEMICONDUCTOR LASER DIODE APPARATUS - A semiconductor laser diode apparatus capable of suppressing difficulty in handling of the semiconductor laser diode also when the width of a semiconductor laser diode portion is small is obtained. This method of fabricating a semiconductor laser diode apparatus includes steps of forming a plurality of first semiconductor laser diode portions on a first substrate at a prescribed interval in a second direction intersecting with a first direction in which cavities extend, bonding one or some of the plurality of first semiconductor laser diode portions to a second substrate, separating the one or some of the plurality of first semiconductor laser diode portions bonded to the second substrate from the first substrate; and dividing the second substrate along the second direction. | 2008-09-11 |
20080219310 | Injector Emitter - Injection emitters (light-emitting diodes, superluminescent emitters) are used in the form of highly-efficient solid state radiation sources within a large wavelength range and for wide field of application, including general illumination using white light emitters provided with light-emitting diodes. Said invention also relates to superpower highly-efficient and reliable injection surface-emitting lasers, which generate radiation in the form of a plurality of output beams and which are characterized by a novel original and efficient method for emitting the radiation through the external surfaces thereof. | 2008-09-11 |
20080219311 | Optical structures including selectively positioned color centers, photonic chips including same, and methods of fabricating optical structures - Various aspects of the present invention are directed to optical structures including selectively positioned color centers, methods of fabricating such optical structures, and photonic chips that utilize such optical structures. In one aspect of the present invention, an optical structure includes an optical medium having a number of strain-localization regions. A number of color centers are distributed within the optical medium in a generally selected pattern, with at least a portion of the strain-localization regions including one or more of the color centers. In another aspect of the present invention, a method of positioning color centers in an optical medium is disclosed. In the method, a number of strain-localization regions are generated in the optical medium. The optical medium is annealed to promote diffusion of at least a portion of the color centers to the strain-localization regions. | 2008-09-11 |
20080219312 | QUANTUM CASCADE LASER DEVICE - In a quantum cascade laser device | 2008-09-11 |
20080219313 | SEMICONDUCTOR LASER DEVICE - A semiconductor laser device includes a cavity extending in a propagation direction of a laser beam (X-direction). A front facet is on one end of the cavity through which the laser beam is emitted. A rear facet is on the other end of the cavity. Further, an adhesive layer and a coating film are on the front facet, and an adhesive layer and a coating film are on the rear facet. The adhesive layers preferably have a thickness of 10 nm or less and preferably include an anodic oxide film of one of Al, Ti, Nb, Zr, Ta, Si, and Hf. | 2008-09-11 |
20080219314 | SEMICONDUCTOR LASER DEVICE - A semiconductor laser device includes a cavity extending in a propagation direction of a laser beam (X-direction). A front facet is on one end of the cavity through which the laser beam is emitted. A rear facet is on the other end of the cavity. An anodic oxide film is provided on at least one of the front facet and the rear facet, and the anodic oxide film preferably has a thickness of λ/4n or an odd integer multiple thereof, where λ is the wavelength of the laser beam and n is the refractive index of the anodic oxide film. | 2008-09-11 |
20080219315 | Semiconductor Optical Device and Manufacturing Method Thereof - A low reflective window structure in an existent electro-absorption optical modulator involves a trading off problem between the increase in the parasitic capacitance and the pile-up. This is because the capacitance density of the pn junction in the window structure is higher compared with the pin junction as the optical absorption region, and the application of electric field to the optical absorption region becomes insufficient in a case of receding the electrode structure from the junction between the optical absorption region and the window structure making it difficult to discharge photo-carriers generated in the optical absorption region. An undope waveguide structure comprising a structure having such compositional wavelength and a film thickness that the compositional wavelength for each of multi-layers constituting the waveguide structure is sufficiently shorter than that of the signal light and the average refractive index is about identical with that in the optical absorption region may be disposed. In a case of forming the electrode structure so as to overlap the junction boundary between the optical absorption region and the undope waveguide, and do not extend on the joined boundary between the undope waveguide and the window structure, increase in the parasitic capacitance due to the pn junction of the window structure and pile up can be suppressed simultaneously. | 2008-09-11 |
20080219316 | Laser and Monitoring Photodetector with Polymer Light Guide - A surface emitting laser ( | 2008-09-11 |
20080219317 | GAS-PURGED LASER SYSTEM AND METHOD THEREOF - A gas-purged laser system and method of gas-purging a laser system are disclosed. One embodiment of the laser system comprises an excimer refractive surgical laser system having a laser beam optical path configured to allow purging of a portion of a volume enclosing the laser beam optical path with a gas, and a gas generator, operable to generate the purging gas and provide the gas to the volume portion. The portion of the volume can be the entire volume enclosing the laser beam optical path or a selected portion thereof. The gas can be nitrogen gas and the gas generator can be a self-contained nitrogen generator as will be known to those having skill in the art. Embodiments can further comprise a controller for controlling the flow of purging gas in response to received signals representative of various parameters, such as temperature, oxygen level, pressure, humidity and flow rate. | 2008-09-11 |
20080219318 | Mirror with non-invasive temperature sensing device - The embodiments of the invention provide a non-invasive temperature sensing device including a glass mirror and a temperature sensing device coupled to the glass mirror such that when a user is positioned in front of the glass mirror the temperature sensing device can sense the body temperature of the person. The temperature sensing device can be an infrared or laser thermometer. The device can include a base having an upright member coupled thereto, wherein the glass mirror is coupled to the upright member. The glass mirror can further include a temperature display coupled thereto. The device can also contain a processor and memory for processing and storing sensed temperatures. The temperature sensing device can alternatively be attached to either the base or the upright member. More than one temperature sensing device can be connected to the device. | 2008-09-11 |
20080219319 | BIOLOGICAL PARAMETER MONITORING SYSTEM AND METHOD THEREFOR - A system and method for monitoring biological parameters that allows a user to wirelessly monitor one or more biological parameters of one or more individuals, either continuously or periodically is disclosed. The system may send an alert when the biological parameter exceeds a predetermined threshold, and also provides information to the user about selected individuals or about components of the system. | 2008-09-11 |
20080219320 | CONFORMAL MESH FOR THERMAL IMAGING - This invention provides thermal sensors and imagers that are flexible and capable of conforming to curved surfaces and corresponding methods of making and methods of thermal sensing. The thermal sensors contain an array of thermal resistors patterned in a row and column configuration, with each thermal resistor electrically isolated from other thermal resistors within the sensor. Thermal information is obtained from a region by measuring the resistance of each thermal resistor and calculating a thermal resistance for each entry of the array. | 2008-09-11 |
20080219321 | Bimetal Thermometer Having a Heat Conductive Fluid - A bimetal thermometer includes a tubular housing and a shaft extending through the tubular housing. The shaft is attached at a top end to a pointer and is attached at a bottom end to a bimetal helical strip. A heat conductive fluid is in contact with the tubular housing and with the bimetal helical strip. | 2008-09-11 |
20080219322 | Methods and apparatus for emitter detection - A method is provided for coordinating detection of emitted signals by a receiver with transmission of signals by a transmitter, wherein the receiver and the transmitter are located on the same platform. The receiver scans a surrounding environment to detect emitted signals in multiple frequency ranges while the transmitter transmits signals in a predetermined frequency range. The receiver may employ dwells which may be defined as receiver configurations. A dwell, when executed, may be used to detect signals in a certain frequency range. If a frequency range of the dwell conflicts with the frequency range of transmitter signals, which may result in interference of transmitter signals with detection of emitted signals, execution of the dwell may be delayed. If the frequency range of the dwell is such that transmitter signals do not interfere with execution of the dwell, the dwell can be executed. | 2008-09-11 |
20080219323 | FAST AND RELIABLE CHANNEL CLASSIFICATION ALGORITHMS IN BLUETOOTH NETWORKS TO DETECT AND AVOID 2.4 GHZ INTERFERERS - Aspects of a method and system for fast and reliable channel classification in Bluetooth networks to detect and avoid channel interferers may include one or more processors that may enable performance of signal strength measurements on received Bluetooth signals at a current selected frequency. At least one data packet received via the Bluetooth signals may be processed to determine the presence of bit errors. The processor(s) may enable characterization of the Bluetooth signals at the current selected frequency based on the signal strength measurements and/or the processing of the data packets. The current selected frequency may be selected during adaptive frequency hopping based on the characterization. | 2008-09-11 |
20080219324 | METHOD AND APPARATUS FOR GENERATING A HOPPING SEQUENCE IN A COMMUNICATION SYSTEM - A method and apparatus for generating a hopping sequence according to a seed value in a communication system are provided. The apparatus and method for generating a hopping sequence indicating a hopping pattern of carrier frequencies or time slots in a communication system include, when a seed value is input, setting a window to be applied to the seed value, calculating a window value according to the set window and generating a sequence by storing values in sequence arrangement to the calculated window value. The apparatus and method reduce the necessary size of a memory unit for storing a hopping sequence. | 2008-09-11 |
20080219325 | MMSE MUD IN 1x MOBILES - Systems and methodologies are described that facilitate equalizing inter-sector interference and performing interference cancellation on a forward link by utilizing a combination of pilot interference cancellation followed by selective interference cancellation. Selective interference cancellation can be performed using, for instance, a reduced-rank minimum mean-squared error multi-user detection receiver. A system matrix can be reduced by the combined cancellation protocols, and can be further reduced by performing a fast Hadamard transform there on, which in turn can minimize matrix complexity, as well as computational overhead associated with processing the system matrix. | 2008-09-11 |
20080219326 | Wireless multimedia link - An apparatus with a first information decoder ( | 2008-09-11 |
20080219327 | Spreading code derived from weil sequences - Methods and systems relating to Weil-based spreading codes are described herein. In an embodiment, a method includes generating a set of Weil sequences, adapting a plurality of sequences of the set of Weil sequences to form a first plurality of codes, and selecting a second plurality of codes from the first plurality of codes. A code of the first plurality of codes is selected based at least on a correlation associated with the code. Each code of the first plurality of codes has a predetermined length. | 2008-09-11 |
20080219328 | Receiver Apparatus, Receiving Method, Program, and Recording Medium - A receiver apparatus includes a plurality of signal receiving means; a plurality of channel signal outputting means for sampling signals received by the plurality of signal receiving means at sampling rates switched within a predetermined range or between multiple values and outputting channel signals; control means for controlling the sampling rates in the plurality of channel signal outputting means; response estimating means for estimating responses on the basis of the channel signals output from the plurality of channel signal outputting means; evaluating means for evaluating reception characteristics on the basis of the responses estimated by the response estimating means; and determining means for determining the sampling rates in the plurality of channel signal outputting means on the basis of the reception characteristics at the multiple sampling rates evaluated by the evaluating means. | 2008-09-11 |
20080219329 | Local oscillator control in radio receivers - A radio receiver measures a signal quality metric and modifies attributes of a local oscillator signal in response thereto. A digital signal processor may be used to determine a signal-to-noise-plus-distortion ratio (SNDR) of a baseband signal, and the overlap of two quadrature-related local oscillator signals may be modified. | 2008-09-11 |
20080219330 | Digital subscriber line (DSL) tracking system - Digital Subscriber Line (DSL) concentrating systems and other equipment from various manufacturers may be tracked and monitored with a single DSL tracking tool. The DSL tracking tool functions as part of a system of computing devices and databases with various user interfaces. The DSL tracking tool can perform analyses and generate reports about DSL devices, DSL sites, DSL concentrating systems, and routers to aid service providers in provisioning and maintaining DSL equipment. | 2008-09-11 |
20080219331 | Methods and apparatus for reducing the effects of DAC images in radio frequency transceivers - Methods and apparatus for reducing the effects of digital-to-analog converter (DAC) images and transmission spurious effects in a receive frequency band of a radio frequency (RF) transceiver. A transceiver apparatus includes a transmitter portion having a DAC, a receiver portion configured to receive RF signals in a receive frequency band, and a variable rate clock generator. The variable rate clock generator is used to provide an oversampling clock for the DAC. The rate of the oversampling clock is adjustable and is selected so that an upconverted version of a DAC image created by the DAC is steered away from frequencies within the receive frequency band. A notch-effect low-pass filter (NELPF) may also, or alternatively, be used in the transceiver to reduce transmission spurious effects in the receive frequency band. | 2008-09-11 |
20080219332 | APPARATUS AND METHODS ACCOUNTING FOR AUTOMATIC GAIN CONTROL IN A MULTI CARRIER SYSTEM - Apparatus and methods are provided for accounting for the effects of automatic gain control (AGC) in a multi carrier communications system when combining pilot tone interlaces by essentially reversing the effects of the AGC. In an aspect, a method for adjusting for the effects of automatic gain control when combining pilot interlaces in an interlace filter of a communication system is disclosed. The method includes determining a normalization gain of an applied automatic gain control normalized to a predefined time. Additionally, two or more combining coefficients for an interlace filter are determined based on a selected criterion. Each of the two or more combining coefficients is then modified based on the determined normalization gain to yield adjusted combining coefficients. Corresponding apparatus are also disclosed. | 2008-09-11 |
20080219333 | Signal transceiver for differential data communication of ternary data and method therefor - A signal transceiver may include three transmission lines, a signal transmission unit, and/or a signal reception unit. The signal transmission unit may be configured encode first through third transmission data to generate first through third data and transmit the first through third data through the three transmission lines. The signal transmission unit may be configured to generate each of the first through third data at one of four or more voltage level. The signal reception unit may be configured to receive the first through third data and monitor voltage differences between the first through third data to restore the first through third data into first through third reception data. | 2008-09-11 |
20080219334 | Managing Bit Error Rates on Point-To-Point Wireless Links in a Network - In one embodiment, a method includes receiving, from a decoder connected to a wireless receiver for communication with a remote apparatus, first error data that indicates a current error rate that corresponds to a first inbound data packet received from the remote apparatus. Based in part on the first error data, it is determined whether the remote apparatus should increase a current signal to noise ratio. If so, then a first outbound data packet is sent to an encoder connected to a wireless transmitter. The first outbound data packet includes first link conditioning request data that indicates a current signal to noise ratio for one or more data packets received from the remote apparatus based at least in part on the first error data. The remote apparatus increases signal to noise ratio of transmissions in response to receiving the outbound data packet. | 2008-09-11 |
20080219335 | Remote Access Integrated Tester - In conventional testing, the user is using an on-hand computing device to control testing; however, for the present invention the user is at the access point and the computer is remote, e.g. nearby or in the technician's vehicle, and not being used by the user to run the tests. The present invention provides a means to conveniently connect a customer provided network access device, e.g. a USB “dongle” modem, via a wireless link to the remote computer, which is providing the test application. The computer is remote, and the remote module device extends the reach of the commercial dongle modem so it is not necessary to carry the computer to the test access point. | 2008-09-11 |
20080219336 | SYSTEM AND METHOD FOR FAULT DETECTION AND LOCALIZATION IN TIME SERIES AND SPATIAL DATA - A method for fault detection and localization calls for obtaining a data set, smoothing the data set, identifying a plurality of split points within the data set, fitting a piecewise linear function to the plurality of split points; and determining a residual between the function and the smoothed data set. Related systems and computer program products are disclosed and claimed. | 2008-09-11 |
20080219337 | Battery Apparatus, Battery Control Apparatus, and Motor Drive Unit - The present invention provides enhanced serial communication reliability in a situation where a plurality of cell controllers and a battery controller are daisy-chained to form a serial communication configuration. While the plurality of cell controllers and the battery controller are daisy-chained to form a serial communication configuration, the battery controller or each cell controller includes a communication speed detection means, which detects the communication speed of data input from an additional controller, and a reception timing correction means, which corrects the reception timing for data input from the additional controller in accordance with the communication speed detected by the communication speed detection means. | 2008-09-11 |
20080219338 | QUADRATURE MODULATION ROTATING TRAINING SEQUENCE - A system and method are provided for transmitting a rotating training sequence. A rotating training signal is generated in quadrature modulation transmitter. The rotating training signal includes training information sent via an in-phase (I) modulation path, as well as training information sent via a quadrature (Q) modulation path. The rotating training signal may be generated by initially sending training information via the I modulation path, and subsequently sending training information via the Q modulation path. The training information sent via the I modulation path may include a first symbol having a reference phase (e.g., 0 degrees or 180 degrees). Then, the training information sent via the Q modulation path would include a second symbol having a phase that is ±90 from the reference phase. | 2008-09-11 |
20080219339 | CHANNEL ESTIMATION USING FREQUENCY SMOOTHING - A system and method are provided for supplying a frequency-smoothed communications training signal. The method generates a frequency-smoothed unbiased training signal in a quadrature modulation transmitter. The frequency-smoothed unbiased training signal includes a plurality of pilot signal products, where each pilot signal product includes complex plane information represented by a reference frequency subcarrier, multiplying complex plane information represented by mirror frequency subcarrier. The sum of the plurality of pilot signal products is equal to zero. The method supplies the frequency-smoothed unbiased training signal so that it may be transmitted within a single symbol period. System and methods are also provided for using a frequency-smoothed training signal in the calculation of a receiver channel estimate. | 2008-09-11 |
20080219340 | FREQUENCY DOMAIN EQUALIZER FOR WIRELESS COMMUNICATIONS SYSTEM - The present invention relates to wireless communications and is particularly applicable to devices and modules for correcting errors introduced to a wireless signal after its transmission. An equalizer is provided which compensates for undesirable effects on received radio signals introduced by either signal processing or by the transmission medium. In operation, the equalizer multiples the complex received signal with a complex corrective signal that compensates for these effects. A tap corrective signal corrects for time-varying channel effects (i.e. channel distortions), a timing tracking signal corrects for carrier frequency offset errors, and a phase tracking signal corrects for sampling frequency offset errors. | 2008-09-11 |
20080219341 | Space-frequency equalization for oversampled received signals - Techniques for performing space-frequency equalization and spatial equalization in the frequency domain are described. Space-frequency equalization combines signal components across both space and frequency dimensions whereas spatial equalization combines signal components across space. A receiver obtains input symbols for multiple (M) signal copies from multiple (R) receive antennas and multiple (C) times oversampling, where M is equal to R times C. For space-frequency equalization, the receiver derives equalizer coefficients for the M signal copies, e.g., based on MMSE criterion, filters, the input symbols for the M signal copies with the equalizer coefficients, and combines the filtered symbols for the M signal copies to obtain output symbols. Space-frequency equalization may be used for some frequency bins and spatial equalization may be used for other frequency bins to reduce complexity. | 2008-09-11 |
20080219342 | CHANNEL EQUALIZATION WITH NON-COMMON MIDAMBLE ALLOCATION IN 3GPP TD-CDMA SYSTEMS - Systems and methodologies are described that facilitate implementing a linear adaptive equalizer receiver on the downlink link of a UMTS TDD wireless communication system. A reference signal can be generated based on multiple non-common midamble sequences in a time slot of a received transmission. Traffic-to-pilot ratios for channel codes in the time slot can be generated, and relative strengths of channel codes associated with specific midambles can be determined to weight the midamble. A plurality of the weighted midambles can then be utilized to generate a reference signal to train the equalizer, which can facilitate utilization of total aggregate midamble energy rather than midamble energy associated with a single midamble in the signal. | 2008-09-11 |
20080219343 | SYSTEMS AND METHODS FOR PROCESSING A SIGNAL WITHIN A COMMUNICATIONS SYSTEM WITH A SUPERIMPOSED REFERENCE SIGNAL - A method for processing a signal within a communications system is described. A signal transmitted over a channel is received that includes an information signal and a reference signal. The information signal includes data. The reference signal is superimposed on the data. A channel impulse response of the channel is estimated based on the reference signal. The information signal is equalized based on the estimation of the channel impulse response by compensating the signal, estimating the information signal, canceling the reference signal and recovering the data. | 2008-09-11 |
20080219344 | Encoding device and encoding method - When creating SBR data in a the low-resolution mode, an encoding device divides a high-frequency component of input audio data being encoded by SBR method into a high-frequency band and a low-frequency band, and calculates an average high-frequency power value that indicates the average value of the power in the high-frequency band of the audio data, as well as an average low-frequency power value that indicates the average value of the power in the low-frequency band of the audio data. The encoding device then compares the average high-frequency power value and the average low-frequency power value, selecting the smaller of the two. The encoding device then corrects the power of the high-frequency component of the signal being encoded by the SBR method so that it equals the selected average power value. | 2008-09-11 |
20080219345 | Streaming Media Codec with Transform Coefficient Bounding - A streaming media codec may include a collection of media stream processing modules arranged into a processing graph. One or more of the modules may perform a Fourier-related transform, and a significant fraction of media stream processing may occur post-transform. The media stream may be considered as a sequence of processing blocks, and post-transform processing blocks contain transform coefficients. Such transform coefficients are amenable to classification into processing classes. Some processing classes may require significantly less processing effort than others by post-transform processing modules. Such transform coefficient classes may be efficiently specified, for example, with coefficient bounding rectangles, and the specification provided to one or more post-transform streaming media processing modules to enable the modules to allocate their processing resources more effectively. Streaming media processing modules making effective use of the transform coefficient class information, and streaming media codecs that incorporate them, are called transform coefficient bounding (TCB) enhanced. | 2008-09-11 |
20080219346 | METHOD FOR EFFICIENT ENCODING AND DECODING QUANTIZED SEQUENCE IN WYNER-ZIV CODING OF VIDEO - A computer-based method for encoding and decoding quantized sequences in Wyner-Ziv coding of video, bi-partite graph is used in an iterative process. The method takes as input to an encoder a sequence of quantized data from a finite alphabet, the sequence comprising a video frame. Another sequence of data, decoded from the prior video frame, is input to a decoder. A statistical model describing the statistical relationship between the quantized input sequence to the encoder and the input sequence to the decoder is input to both the encoder and the decoder. A minimum field size is estimated from the statistical model at the encoder and the decoder separately. | 2008-09-11 |
20080219347 | MOVING PICTURE CODING METHOD, MOVING PICTURE DECODING METHOD, MOVING PICTURE CODING DEVICE, AND MOVING PICTURE DECODING DEVICE - Provided are a moving picture coding method, a moving picture decoding method, a moving picture coding device, and a moving picture decoding device, by which skipped display can be performed even in a moving picture decoding device having insufficient processing capability and increase of an amount of coded data can be suppressed. The moving picture coding method of coding a moving picture stream includes: generating a plurality of combined pictures each of which is generated by combining a plurality of pictures into a combined picture having the plurality of pictures as regions, the plurality of pictures being a part of a plurality of pictures included in the moving picture stream; coding the plurality of the combined pictures; and setting a slice boundary between the regions in the combined picture. In the coding, for each of the plurality of combined pictures, when the combined picture has one or more to-be-displayed region except at least one not-to-be-displayed region, the to-be-displayed region is coded with reference to only a to-be-displayed region of another combined picture. Here, the one ore more to-be-displayed region is to be displayed for skipped reproduction. | 2008-09-11 |
20080219348 | DATA EMBEDDING APPARATUS, DATA EXTRACTING APPARATUS, DATA EMBEDDING METHOD, AND DATA EXTRACTING METHOD - A data embedding apparatus including: a selecting unit for selecting, based upon the second data, a prediction system of calculating a prediction value with respect to data to be processed within the first data; a predicting unit for calculating the prediction value of the data to be processed by the prediction system selected by the selecting unit; a difference calculating unit for calculating a prediction error of the data to be processed by employing the prediction value; and a prediction error calculating unit for outputting the coded data, in which the predicting unit includes: a 0-embedding time predicting unit for performing prediction when a bit value of the second data is “0”; a 1-embedding time predicting unit for performing prediction when the bit value of the second data is “1”; and an embedding end time predicting unit for performing prediction when embedding of the second data is accomplished. | 2008-09-11 |
20080219349 | Parallel processing apparatus for video compression - A method of and an apparatus for parallel processing video compression is described herein. A picture is divided into N zones vertically, and Vertical Split Parallelism (VSP) deploys N+1 processes: N M-coding processes for general macroblock coding in N zones and one E-coding process for entropy coding. By dividing a macroblock encoding process into M-coding and E-coding processes, multiple M-coding threads and one E-coding thread are able to progress simultaneously with proper synchronization between threads. Since the workload of M-coding processes is greater than E-coding for each macroblock coding process, two cores are able to be designated to the two M-coding processes. Either of the cores are able to be designated to the E-coding process since the workload of E-coding is light. Therefore, VSP utilizes parallel processing computing power efficiently. | 2008-09-11 |
20080219350 | H.264/AVC intra coding algorithms having quality scalability - Different algorithms are used in H.264/AVC intra coding to form three coding levels. Algorithms used in two of the three coding levels reduce calculation complexities and power consumptions. The basic level is an exception, which fully keeps an original picture quality. Thus, various needs can be met by coding in the various levels with the various algorithms. | 2008-09-11 |
20080219351 | Apparatus of Predictive Coding/Decoding Using View-Temporal Reference Picture Buffers and Method Using the Same - Provided are an apparatus and method for predictive coding/decoding for improving a compression rate of multiview video using one or two additional reference frame buffers. The predictive encoding apparatus includes: a multiview reference picture providing unit for providing a reference picture for a predictive encoding according to temporal and spatial GOP structure information; a prediction unit for creating a vector by predicting which part of the reference picture inputted from the multiview reference picture providing unit is referred by a picture to currently encode; a transforming and quantizing unit for obtaining a difference signal between the predicted signal inputted from the prediction unit and a picture signal to currently encode, transforming the obtained difference signal, quantizing the transformed signal, and compressing the quantized signal; and an entropy encoding unit for encoding the quantized signal and the vectors according to a predetermined scheme and outputting the encoded signal. | 2008-09-11 |
20080219352 | Motion vector searching apparatus, motion vector searching method and storage medium for storing motion vector searching program - A motion vector searching apparatus to which a reference image, an object image and weight parameters for the reference image are inputted and searches a motion vector based thereon is provides. The motion vector searching apparatus includes an inverse weighting section that generates an inverse weighted object image by performing, on the object image using the weight parameter, a weighting inverse from a weighting performed on the reference image using the weight parameter; an image comparing section that compares the generated inverse weighted object image with the reference image to obtain a comparison value indicating a degree of approximation between the two images; and a determination section that determines an optimum motion vector from the comparison value. | 2008-09-11 |
20080219353 | DE-INTERLACING METHOD AND METHOD OF COMPENSATING A DE-INTERLACED PIXEL - A luminance compensating method of compensating a de-interlaced pixel in a current block of a current frame with reference to a reference block of a reference frame is provided. First, calculate an average luminance of the current block and an average luminance of the reference block. Next, adjust the luminance of the de-interlaced pixel by a luminance difference between the average luminance of the current block and the average luminance of the reference block, such that the luminance of the de-interlaced pixel is more appropriate and the display quality is improved. | 2008-09-11 |
20080219354 | Methods and Systems for Scalable-to-Non-Scalable Bit-Stream Rewriting - Aspects of the present invention relate to systems and methods for selectively determining a quantization parameter based on coding parameters. In some embodiments, a quantization parameter selection may be based on the presence of non-zero transform coefficients as well as other parameters. Some embodiments relate to rewriting a multi-layer bitstream to a single-layer bitstream with a quantization parameter selected with reference to transform coefficients. Some embodiments convert a scalable, multi-layer video sequence into a single-layer, non-scalable video sequence that is compatible with legacy devices. | 2008-09-11 |
20080219355 | APPARATUS AND METHOD FOR PRODUCING A DATA STREAM AND APPARATUS AND METHOD FOR READING A DATA STREAM - An entropy encoder includes an apparatus for producing a data stream which comprises two reference points, of code words of variable lengths, the apparatus comprising a first device for writing at least a part of a code word into the data stream in a first direction of writing, starting from a first reference point, and a second device for writing at least a part of a code word into the data stream in a second direction of writing, which is opposite to the first direction of writing, starting from the other reference point. In particular, when a raster having a plurality of segments is used to write the code words of variable lengths into the data stream, the number of the code words which can be written starting at raster points is doubled, in the best case, such that the data stream of code words of variable lengths is robust toward a propagation of sequence errors. | 2008-09-11 |
20080219356 | SYSTEM AND METHOD FOR TRANSCODING DATA FROM ONE VIDEO STANDARD TO ANOTHER VIDEO STANDARD - A system and method transcodes an input video bit stream having a first encoding profile into an output video bit stream having a second encoding profile. The system includes a first module ( | 2008-09-11 |
20080219357 | APPARATUS AND METHOD THEREOF FOR ENCODING/DECODING VIDEO - An apparatus and method for encoding/decoding an input video complied with a fixed frame rate standard and adjusting bit-stream of an encoded/decoded video in real-time. The apparatus comprises a video encoder, a control circuit, an interface, and a buffer. The control circuit is used for monitoring the utility status of the buffer and thereby controlling the operation of the video encoder to achieve real-time adjustable time-varying throughput for various transmission environments. | 2008-09-11 |
20080219358 | METHOD FOR COMMUNICATING DATA AND CLOCK SIGNALS AND CORRESPONDING SIGNAL, TRANSMITTER AND RECEIVER - A clock signal constituted by pulses with given frequency of repetition and a data signal is able to assume two logic levels are transmitted simultaneously on a two-wire line in the form of a bipolar differential pulse signal with frequency of repetition of the pulses equal to the frequency of repetition of the pulses of the clock signal and in which the sign of the pulses of the pulse signal applied to said two-wire line varies according to the logic level of the data signal. | 2008-09-11 |
20080219359 | Method and system for reducing common mode noise interference in a differential communication channel - A data transmission method includes providing, by a current source, a current to the first conductor while isolating the second conductor from the current source, to thereby transmit a first binary digit; and, responsive to a command to transmit a second binary digit, (i) decreasing from a maximum value to zero an amount of the current provided to the first conductor and (ii) increasing from zero to a maximum value an amount of the current provided by the current source to the second conductor. The decreasing and the increasing are performed simultaneously, in such a manner that the amount of the current provided to the first conductor decreases at the same rate as the amount of the current provided to the second conductor increases, and such that each of a first signal corresponding to the current provided to the first conductor and a second signal corresponding to the current provided to the second conductor has a transition edge having a leading section, a midsection and a trailing section, with the midsection of the transition edge having an average slope that is greater than an average slope of the leading section of the transition edge and that is greater than an average slope of the trailing section of the transition edge. A system is provided which includes a switching system, which is operatively interposed between the current source and the differential communication channel, and a controller which is operative to issue one or more signals control signals to the switching system to implement the data transmission method. | 2008-09-11 |
20080219360 | SYSTEM AND METHOD FOR PERFORMING CHANNEL ESTIMATION USING INTERPOLATION - A system and method for performing channel estimation. The system includes a receiver for decoding OFDM. Upon receiving an OFDM symbol, a plurality of demodulated subcarrier modulation symbols for the OFDM symbol are generated. The demodulated subcarrier modulation symbols are then decoded to generate decoder output code symbols. At least a portion of the decoder output code symbols are reencoded, interleaved, and mapped to a set of reference symbols, where the set of reference symbols correspond to at least a portion of the plurality of subcarriers. A first set of channel estimates is generated, based on at least a portion of the set of reference symbols and a corresponding portion of the plurality of demodulated symbols. Remaining channel estimates are then interpolated from the first set of estimates by filtering the first set of estimates. The channel estimates are then used in decoding a current OFDM symbol being received by the receiver. | 2008-09-11 |
20080219361 | Adaptive Pilot Symbol Allocation Method and Apparatus - According to one embodiment, a wireless communication device estimates channel response based on a reduced-density common pilot signal comprising a plurality of regularly spaced common pilot symbols when the reduced-density common pilot signal is sufficient for estimating the channel response with a desired accuracy. The wireless communication device estimates the channel response based on the reduced-density common pilot signal and one or more additional pilot symbols adaptively allocated to the wireless communication device when the reduced-density common pilot signal is insufficient for estimating the channel response with the desired accuracy. | 2008-09-11 |
20080219362 | Diversity wireless systems - Diversity wireless system, processor, cross-correlator, transmit baseband filter and modulator for processing, cross-correlating, filtering, modulating and providing a first and a second bit rate signal to a transmission system for transmission of the processed, filtered, modulated signal. Transmission system having two transmitters for transmission of the modulated signal. Diversity receiver system with two receivers for receiving the transmitted modulated signal and for providing received signal to a demodulator. Demodulator, receive baseband filter and receive processor for demodulation, filtering and processing received signal. Receive baseband filter for filtering is mismatched to the transmit baseband filter for filtering of the first bit rate signal and receive processor for processing first bit rate demodulated baseband filtered signal provides received baseband mis-match filtered cross-correlated in-phase and quadrature-phase signal. Processor and transmit baseband filter for processing and filtering a signal into a cross-correlated filtered and into a cross-correlated spread spectrum in-phase and quadrature-phase baseband signal. Processor, first and second modulator for processing and baseband filtering a signal into time division multiplexed (TDM) filtered signal and into Orthogonal Frequency Division Multiplexed (OFDM) signal and for providing processed TDM filtered and processed OFDM signal to two modulators for modulation, transmission and diversity reception. | 2008-09-11 |
20080219363 | MULTI-CARRIER COMMUNICATIONS WITH ADAPTIVE CLUSTER CONFIGURATION AND SWITCHING - A method and apparatus for allocating subcarriers in an orthogonal frequency division multiple access (OFDMA) system is described. In one embodiment, the method comprises allocating at least one diversity cluster of subcarriers to a first subscriber and allocating at least one coherence cluster to a second subscriber. | 2008-09-11 |
20080219364 | DELAY-SENSITIVE CROSS LAYER SCHEDULER FOR MULTI-USER WIRELESS COMMUNICATION SYSTEMS - CSIT error considerate delay-sensitive user access systems are provided in a multi-user OFDMA environment comprises a user delay sensitivity tracking component, a CSIT estimating component, a system queue state tracking component and a cross layer scheduling component. The techniques assume heterogeneous users with respect to delay and assume that CSIT information includes error, and optimally allocates broadcast resources, e.g., power, subcarriers and data rate, based on such assumptions. | 2008-09-11 |
20080219365 | METHOD OF GROUPING AND MAPPING TRANSMISSION STATIONS IN A WIRELESS NETWORK - A method of mapping transmission stations in a wireless network by grouping the transmission stations such that each transmission station in the same group transmits a sounding signal in the same time symbol. A method of grouping transmission stations in a wireless network includes sorting the transmission stations in descending order according to a number of transmission links of each transmission station that are unmapped, evaluating each transmission station based on how many unmapped transmission links can be mapped if the evaluated transmission station is made to transmit a sounding signal, placing each transmission station into a group, based on the evaluation, until all of the transmission links are mapped or until the maximum number of sounding bands are used, and, if all of the transmission links are not mapped, repeating the sorting, evaluating, and placing for each time symbol until all of the transmission links are mapped. | 2008-09-11 |
20080219366 | COMBINED RATE AND PRECODER DESIGN FOR SLOW FADING CORRELATED MIMO CHANNELS WITH LIMITED FEEDBACK - System and methodologies are provided herein for joint rate, precoder, and feedback design adaptation and optimization for wireless communication systems. An optimization component as provided herein can implement an integrated framework for joint design of rate, preceding, and feedback partitioning adaptation policies for slow fading and spatially correlated multiple-input multiple-output (MIMO) communication channels with limited feedback. The optimization component can utilize one or more vector quantization (VQ) optimization techniques wherein a feedback strategy and a transmission adaptation strategy are designed to jointly optimize average system goodput (e.g., average bits/second/Hz successfully delivered to a receiver) based on spatial correlation of the communication channels. In one example, a feedback strategy is designed as a channel state information of receiver (CSIR) partition and a transmission adaptation strategy is designed as rate and precoder codebooks. | 2008-09-11 |
20080219367 | TRANSMITTING DEVICE AND CONTROL METHOD THEREOF - A transmitting device is provided that generates OFDM symbols by identifying a sampling frequency of input data that is input from an external device, determining a number of inverse Fourier transform sample points and a number of sampling points of a redundant data portion in accordance with the identified sampling frequency, and subjecting the input data to OFDM modulation using the determined number of sampling points. The transmitting device then transmits the generated OFDM symbols. | 2008-09-11 |
20080219368 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - When performing data communication with a second wireless communication apparatus having a plurality of antennas by using a plurality of transmission channels formed by spatial multiplexing, a first wireless communication apparatus having a plurality of antennas determines whether the second wireless communication apparatus is capable of communication using the plurality of transmission channels, and, on the basis of the determination result, executes a calibration process of forming the plurality of transmission channels with respect to the second wireless communication apparatus. | 2008-09-11 |
20080219369 | ROBUST RATE, POWER AND PRECODER ADAPTATION FOR SLOW FADING MIMO CHANNELS WITH NOISY LIMITED FEEDBACK - System and methodologies are provided herein for rate, power and precoder adaptation for slow fading MIMO communication channels with noisy limited feedback. To optimize a rate of successful information delivery from a wireless transmitter to a wireless receiver and to provide robustness to channel noise, a joint design and optimization technique is utilized to provide optimal power, rate, and precoding adaptation policies for use by a wireless transmitter and an optimal feedback scheme and index assignment mapping for use by a wireless receiver. Additionally, various optimization and design techniques described herein are performed using a low-complexity online adaptation coupled with an offline optimization design. | 2008-09-11 |
20080219370 | USER EQUIPMENT FEEDBACK STRUCTURES FOR MIMO OFDMA - Embodiments of the present disclosure provide a feedback encoder, a feedback decoder and methods of operating the same. The feedback encoder, for use with user equipment, includes an encoding module configured to provide a rank indicator that is separately reportable from a related selection of at least one of a channel quality indicator and a preceding matrix indicator for the user equipment. The feedback encoder also includes a transmit module configured to transmit the rank indicator and the related selection. The feedback decoder, for use with a base station, includes a receive module configured to receive a rank indicator that is separately reportable from a related selection of at least one of a channel quality indicator and a preceding matrix indicator for user equipment. The feedback decoder also includes a decoding module configured to decode the rank indicator and the related selection for the base station. | 2008-09-11 |
20080219371 | Channel estimation and ICI cancellation for OFDM - An iterative channel estimation and inter-carrier interference (ICI) cancellation process is provided for OFDM receivers, and more particularly for mobile OFDM receivers. The iterative process uses decision feedback to estimate both the channel gain and the ICI gains, the latter being the multiplicative gain applied to the adjacent sub-carriers. Thus the receiver performs equalization and ICI cancellation in an iterative fashion and is advantageous for estimating fast fading channels. | 2008-09-11 |
20080219372 | OFDM MODULATOR - An OFDM modulator having a peak factor reduction function. The OFDM modulator has a peak factor reduction unit between an IFFT unit and a guard interval insertion unit thereof. The peak factor reduction unit converts a complex signal X | 2008-09-11 |
20080219373 | CODEBOOK SELECTION FOR TRANSMIT BEAMFORMING - A method select a codebook for transmit beamforming. The method constructs an estimated channel matrix based on a codebook, selects a channel submatrix from the estimated channel matrix, calculates a selection matrix from the channel submatrix; and assigns a steering matrix based on the selection matrix. There may be multiple codebooks and the method may construct an estimated channel matrix, select a channel submatrix, and calculate a selection matrix for each of the codebooks, then select an optimal codebook. The steering matrix is assigned based on the optimal codebook. The steering matrix may be used in steering a transmitted packet. The method may also calculate a post-MIMO equalizer signal-to-noise ratio for a data stream, based on the estimated channel matrix and the selected codebook. A related system is also disclosed. Other embodiments are provided, and each of the embodiments described herein can be used alone or in combination with one another. | 2008-09-11 |
20080219374 | MIMO DETECTION WITH ON-TIME SYMBOL LEVEL INTERFERENCE CANCELLATION - Techniques for receiving a MIMO transmission are described. A receiver processes received data for the MIMO transmission based on a front-end filter to obtain filtered data. The receiver further processes the filtered data based on at least one first combiner matrix to obtain detected data for a first frame. The receiver demodulates and decodes this detected data to obtain decoded data for the first frame. The receiver then processes the filtered data based on at least one second combiner matrix and the decoded data for the first frame to cancel interference due to the first frame and obtain detected data for a second frame. The receiver processes this detected data to obtain decoded data for the second frame. The front-end filter processes non on-time signal components in the received data. Each combiner matrix combines on-time signal components in the filtered data to obtain detected data for a channelization code. | 2008-09-11 |
20080219375 | APPARATUS AND METHOD FOR SPATIAL MULTIPLEXING WITH BACKWARD COMPATIBILITY IN A MULTIPLE INPUT MULTIPLE OUTPUT WIRELESS COMMUNICATION SYSTEM - An apparatus and method for supporting both a receiver using a single antenna and a receiver using multiple antennas in a Multiple Input Multiple Output (MIMO) wireless communication system are provided. The apparatus and method in a MIMO wireless communication system include a first synthesizer for generating a first Transmit (Tx) signal by adding a first signal and a second signal, a second synthesizer for generating a second Tx signal by subtracting the second signal from the first signal and a plurality of transmitting units for transmitting the first Tx signal and the second Tx signal through corresponding antennas. Accordingly, receivers having either a single antenna or multiple antennas may be employed in the same communication system. | 2008-09-11 |
20080219376 | Methods and arrangements for communicating in a multiple input multiple output system - Systems and methods for utilizing new communication standards in wireless local area networks are provided that also support legacy wireless stations. The method can include user equipment determining channel state information, selecting a unitary channel decomposition precoder format based on the determined channel state information and transmitting the precoder format information to a base station. During a return transmission the user equipment can receive user data with the precoder format information and utilize a non-linear detector to demodulate and decode the user data. Based on the reception the user equipment can estimate channel quality; and transmitting channel quality information as feedback. | 2008-09-11 |
20080219377 | Transmitter crosstalk cancellation in multi-standard wireless transceivers - A method of suppressing interference from a transmitter operating to a first standard to a local receiver operating to a second standard is provided. Such interference being increasingly common as a result of the deployment of multiple wireless transceivers within electronic devices supporting multiple international standards, such as WiFi and WiMAX. Advantageously, the invention presents a means of actively cancelling interference both from transmitters operating within the same frequency range as defined by the standard as well as those operating in different frequency ranges. The active cancellation accordingly allows improved performance for systems with very low received signal powers, such as GPS, in addition to wireless data communications standards. An exemplary embodiment providing active cancellation through delaying a portion of the transmitted signal and adjusting both the amplitude and phase by means of polar modulation prior to summing this signal with the detected signal to provide a receive signal within which the transmit signal is nulled. | 2008-09-11 |
20080219378 | LOW POWER WIRELESS COMMUNICATION SYSTEM - A transmitter, a receiver, and a transceiver for use in a wireless communication system are disclosed. In one embodiment, the radio frequency (RF) transmitter comprises a first parallel-to-serial converter to convert first parallel data corresponding to a I quadrature baseband signal component into a first set of serial data bits, a second parallel-to-serial converter to convert second parallel data corresponding to a Q quadrature baseband signal component into a second set of serial data bits, and one or more stages having a first NOR gate coupled to a first transistor and a second NOR gate coupled to a second transistor. The first XOR gate has a pair of inputs coupled to the first set of serial data bits and a first clock (e.g., an I clock) that corresponds to the I quadrature baseband signal component, and has a first output coupled to drive the first transistor, while the second XOR gate has a pair of inputs coupled to the second set of serial data bits and a second clock (e.g., the Q clock) that corresponds to the Q quadrature baseband signal component, and has a second output coupled to drive the second transistor. The first and second outputs are summed at a node to obtain a single-side band (SSB) RF output. | 2008-09-11 |
20080219379 | QUADRATURE IMBALANCE MITIGATION USING UNBIASED TRAINING SEQUENCES - A system and method are provided for transmitting an unbiased communications training sequence. The method generates an unbiased training sequence in a quadrature modulation transmitter. The unbiased training sequence represents a uniform accumulated power evenly distributed in the complex plane. As a result, training information in the time domain is sent via an in-phase (I) modulation path having an accumulated power. Training information in the time domain is sent via a quadrature (Q) modulation path having an accumulated power equal to the I modulation path power. Also provided are system and method for calculating an unbiased channel estimate from a received unbiased training sequence. | 2008-09-11 |
20080219380 | Data Encoding in a Clocked Data Interface - One embodiment of the present invention includes a data transmission system. The system comprises a data transmitter that provides a plurality of data bits over at least one data line. The data transmitter comprises a clock that provides a clock signal associated with timing for latching the plurality of data bits and a data encoder configured to encode error data associated with the data transmission system in the clock signal. | 2008-09-11 |
20080219381 | METHOD AND SYSTEM FOR REDUNDANCY-BASED DECODING OF VIDEO CONTENT IN A WIRELESS SYSTEM - Aspects of a method and system for redundancy-based decoding of video content in a wireless system are provided. A wireless receiver may determine whether a received multimedia data stream comprises video content and may select a redundancy-based decoder when video content is detected. The wireless receiver may be a WLAN receiver or a cellular receiver. Video content may be indicated by at least one flag in a preamble or a reserved field of the received multimedia data. The redundancy-based decoder may be a Viterbi decoder. The wireless receiver may enable a standard Viterbi decoder to decode portions of the multimedia data that do not comprise video content. The wireless receiver may generate at least one signal to select the redundancy-based decoder or the standard Viterbi decoder. | 2008-09-11 |
20080219382 | SIGNAL RECEIVING CIRCUIT TO TRANSMIT HIGH SPEED SIGNAL - A signal receiving circuit to transmit a high speed signal, includes a signal processing unit having a terminal resistor, a board unit having a signal transmitting unit to transmit an external signal to the signal processing unit and a parasitic capacitance offsetting unit which is formed on the board unit and to offset parasitic capacitance existing in the signal processing unit. | 2008-09-11 |
20080219383 | Method and Apparatus for Carrier Recovery Using Multiple Sources - In a receiver, a decision-directed phase estimator is used in conjunction with an interpolator to provide a phase estimate for use in carrier recovery. For example, a receiver comprises a pilot phase estimator, a Costas loop and an interpolation controller. The pilot phase estimator provides determined phase estimates at the pilot times and the interpolation controller provides interpolated phase estimates at other times as a function of a linear interpolation based on a respective determined phase estimate and at least one decision-directed phase error estimate from the Costas loop. | 2008-09-11 |
20080219384 | Tfci Decoding Apparatus and Method - Wireless communication systems according to 3rd Generation standards allow for large flexibility in payload transmission. To signal the specific combination of transport block sizes multiplexed into one composite transport channel, a transport format combination indicator is transmitted in addition to the encoded payload data. The correct decoding of this transport format combination indicator codeword information is crucial to retrieve the correct number and size of transport blocks from the incoming data stream in the receiver, which can be both, the user equipment or the base station. The decoding apparatus ( | 2008-09-11 |
20080219385 | METHODS AND SYSTEMS FOR TRANSMISSION OF MULTIPLE MODULATED SIGNALS OVER WIRELESS NETWORKS - Receiver network for receiving a first filtered modulated transmitted signal in a first RF band and a second modulated transmitted signal in a second RF band and for providing received signals to one or more demodulators. A demodulator and baseband filter for demodulating and filtering the first filtered modulated received signal and for providing filtered demodulated baseband signal by a baseband filter mis-matched to the filter of the first filtered modulated transmitted signal and demodulating the second modulated signal providing a demodulated baseband signal and a selector for selecting either the first or the second demodulated baseband signal. A receiver and demodulation system receiving a first TDMA modulated signal having a first bit rate and for receiving a second modulated signal having a second bit rate and for providing the received signals to a one or more demodulators and for providing cross-correlated demodulated in-phase and quadrature-phase baseband signals and demodulating the second bit rate modulated signal and providing a demodulated baseband signal. | 2008-09-11 |
20080219386 | QUADRATURE IMBALANCE ESTIMATION USING UNBIASED TRAINING SEQUENCES - A system and method are provided for removing quadrature imbalance errors in received data. The method accepts an unbiased training sequence in a quadrature demodulation receiver. An unbiased training sequence has a uniform accumulated power evenly distributed in a complex plane, and includes predetermined reference signals (p) at frequency +f and predetermined mirror signals (p | 2008-09-11 |
20080219387 | CROSS QAM MODULATION-BASED SYMBOL MAPPING METHOD AND APPARATUS IN A MOBILE COMMUNICATION SYSTEM - A method for determining a bit pattern of a symbol in a wireless communication system using a cross modulation scheme. The method includes generating symbols with the cross modulation scheme, classifying positions of coding symbols by reliabilities of at least 3 classes according to an average bit error rate BER(ave) of symbols generated with the cross modulation scheme and a bit error rate BER based on transmission positions of the coding symbols in a modulation symbol during transmission of a packet with the cross modulation scheme, and determining a bit pattern such that higher-priority symbols are inserted into higher-reliability positions. | 2008-09-11 |
20080219388 | SUCCESSIVE INTERFERENCE CANCELLATION BASED ON THE NUMBER OF RETRANSMISSIONS - A method for processing a plurality of symbol streams is provided. The method includes receiving a first symbol stream, wherein the first symbol stream has a corresponding first number of retransmissions. The method further includes receiving a second symbol stream, wherein the second symbol stream has a corresponding second number of retransmissions. The method further includes selecting the first symbol stream for decoding, if the first number of retransmissions is greater than the second number of retransmissions. | 2008-09-11 |
20080219389 | Feed-forward cancellation in wireless receivers - A method of suppressing interference from remote transmitters operating to a first standard having frequencies overlapping those for a receiver operating to a second standard is provided. Such interference being increasingly common as a result of the deployment of multiple wireless transceivers within electronic devices either supporting multiple international standards, such as WiFi and WiMAX, or within typical wireless environments. Advantageously, the invention presents a means of actively cancelling interference from transmitters operating within the same frequency range as defined by the standard. The active cancellation accordingly allows improved performance for systems with very low received signal powers, such as GPS, in addition to wireless data communications standards. An exemplary embodiment providing active cancellation through delaying the portion of the received signal according to the first standard adjusting both the amplitude and phase by means of polar modulation prior to summing this signal with the received signal to provide a receive signal within which the first standard signal is nulled. Control of the polar modulator being determined in the exemplary embodiment by minimizing received power after passband limiting filters. | 2008-09-11 |
20080219390 | Receiver Circuit - A thermometer code to sign and magnitude converter that is particularly useful in a flash ADC is provided. This comprises two conversion units. The first is a thermometer code to Gray code converter and the second a Gray code to sign and magnitude converter. Preferably, the Gray code is of a kind that has a sign bit and has the other bits symmetrically disposed about zero. This form is easily converted to a sign and magnitude code, which is advantageous as it reduces the latency of the converter, which is particularly useful at high data rates. | 2008-09-11 |
20080219391 | Systems and Methods for Distributing a Clock Signal - One embodiment of the present invention includes a distributed clock system. The distributed clock system includes a clock transmitter configured to programmably amplify and transmit a sine-wave signal corresponding to a clock signal, and a clock receiver configured to receive the sine-wave signal and to convert the sine-wave signal into a square-wave clock signal. | 2008-09-11 |
20080219392 | Data-Dependent Noise Predictor in Data-Aided Timing Recovery - A communication system includes a communication channel ( | 2008-09-11 |
20080219393 | Moving Picture Stream Generation Apparatus, Moving Picture Coding Apparatus, Moving Picture Multiplexing Apparatus and Moving Picture Decoding Apparatus - To provide a moving picture stream generation apparatus and the like that generates a moving picture stream that can be played back in trick-play such as variable-speed playback and reverse playback even in a coding format such as the MPEG-4 AVC in which flexible prediction structures are allowed. | 2008-09-11 |
20080219394 | METHOD AND SYSTEM FOR CALCULATING AN ADJUSTED PEAK NODAL POWER IN A NUCLEAR REACTOR - Systems and methods for a nuclear reactor that include developing a first peaking factor at a first burnup threshold for one or more fuel rods. A second peaking factor is developed at a second burnup threshold for the fuel rods. The second burnup threshold is greater than the first burnup threshold. A third peaking factor is developed and is associated with a peak average power threshold for the fuel rods. An adjusted peak nodal power is generated for the fuel rods as a function of a base peak nodal power, the first peaking factor, the second peaking factor, and the third peaking factor. | 2008-09-11 |
20080219395 | Nuclear power plant using nanoparticles in emergency situations and related method - A nuclear power plant provides for delivery of nanoparticles to coolant found in the containment, for example during severe accident scenarios. The nanoparticles advantageously can be delivered passively or actively independently of any emergency core cooling system. The nanoparticle supply can include for example tanks storing nanofluids or solid nanoparticles, or dissolvable paints containing nanoparticles. Methods for providing the nanoparticles are also provided. | 2008-09-11 |
20080219396 | Nuclear power plant using nanoparticles in closed circuits of emergency systems and related method - A nuclear power plant with an improved cooling system using nanoparticles in solid or fluid form to improve heat transfer and reduce corrosion is provided. The nanoparticles are delivered to a closed cooling circuit such as a CCWS. Methods for providing the nanoparticles are also provided. | 2008-09-11 |
20080219397 | Decay Heat Removal System for Liquid Metal Reactor - A decay heat removal system for a liquid metal reactor in which a decay heat exchanger (DHX) is installed concentrically with an intermediate heat exchanger (IHX) in the same cylinder which separates the DHX and IHX from the reactor pool fluid, and serves to remove the reactor core decay heat. The cylinder surrounds the IHX and DHX, and has an open top portion protruding out of the level of the fluid in a hot pool, a bottom portion connected to a cold pool and a guide pipe for allowing the passage of the fluid from the hot pool into the IHX. The decay heat removal system can remove decay heat immediately after occurrence of an accident, thereby improving the safety of a nuclear plant. | 2008-09-11 |
20080219398 | Fuel Element For A Pressurized Water Reactor - A fuel element for a nuclear reactor has a fuel rod bundle, at least one spacer with cells defined by at least one web section made from a first material and several guide tubes each running through a cell and axially fixed thereto made from a second material. The first and second materials have differing thermal expansion coefficients. The connection between the guide tube and the spacer is embodied as follows: first and second projections are directly or indirectly fixed to the guide tube. The first projections are disposed in a first axial position and the second projections are arranged at a second axial position and the projections each engage in an opening through the web section to give an axially-acting undercut. | 2008-09-11 |
20080219399 | Frequency Divider With Symmetrical Output - There is disclosed an apparatus for dividing the frequency of an input signal by an integer N. First and second means may divide the frequency of the input signal by a factor of N and then by a factor of 2. An output of the first means and an output of the second means may be combined by an exclusive OR gate. Third means may be used to control the relative phase of the outputs from the first and second means such that the output from the first means and the output of the second means differ in phase by one-quarter cycle or 90 degrees. | 2008-09-11 |
20080219400 | Event Counter - A counting method and a counter using an integrated circuit memory area, including at least one step of storage of partial values in several words of identical memory sizes, the result of the counting being obtained by arithmetically adding the values contained in the different words. | 2008-09-11 |
20080219401 | SHIFT REGISTER CIRCUIT AND IMAGE DISPLAY APPARATUS CONTAINING THE SAME - Threshold voltage shifts of transistors which are constituents of a bidirectional shift register are reduced to prevent a malfunction in the shift register. A bidirectional unit shift register includes first and second pull-down circuits ( | 2008-09-11 |
20080219402 | Repositionable Gynecological Applicator for Image-guided Radiosurgery (IGRS) and Image-guided Radiation Therapy (IGRT) for Localized Treatment of Gynecological Tumors - A method and apparatus for precisely reproducing the position of a vaginal cylinder in relation to a patient to ensure that a planned radiation dose can be delivered with high precision to the intended treatment target volumes. In order to properly define the treatment volume, a vaginal cylinder with proper diameter is inserted into the patient's vagina. This invention addresses two potential errors: one, the incorrect vaginal cylinder position in relation to the radiation beams, and second, the inconsistent positional correlation between the vaginal cylinder and the patient's body. These two geometric errors will cause dosimetric errors. The present invention provides a method and apparatus for minimizing the geometric error and dosimetric error associated with conventional external beam radiation therapy or radiosurgery used in treating gynecological tumors. First a treatment plan is carried out to determine the treatment target volume. Second, treatment delivery is carried out by using an image-guided system to locate the position of the vaginal cylinder and comparing it relative to the treatment delivery system coordinate system and the patient's coordinate system. The displacement in the position of the vaginal cylinder from the treatment plan is corrected by calculating the transformation matrix and entering the resulting value into a position adjusting assembly. The position adjusting assembly adjusts the vaginal cylinder to exactly reproduce its location relative to the patient's coordinate system. This ensures that the image-guided system locates the precise radiation delivery position and that the radiation dose is delivered precisely to the treatment target volume. | 2008-09-11 |
20080219403 | Computed Tomography Facilitation Method and Apparatus - A first X-ray detector ( | 2008-09-11 |
20080219404 | Method and Apparatus to Facilitate Formation of a Two-Dimensional Image Using X-Ray Fan Beam Scatter - One directs an X-ray fan beam ( | 2008-09-11 |
20080219405 | System and method for patient setup for radiotherapy treatment - Positioning an anatomical feature of a patient during repeated radiotherapy treatments, and accounting for variations in that position between treatments allow a patient to be placed in a substantially repeatable orientation with respect to a treatment device. | 2008-09-11 |