35th week of 2013 patent applcation highlights part 40 |
Patent application number | Title | Published |
20130223484 | Two-Channel Compact Small Form-Factor Pluggable Module - An apparatus and method are provided for two-channel bidirectional communications between devices for enhanced data signals. In particular, the techniques describe a first transceiver channel configured to receive first data communications from a first transceiver port. A second transceiver channel is also configured to receive second data communications from a second transceiver port. A set of signal pins are configured to receive the first data communications from the first transceiver port at a first group of signal pins and to receive the second data communications from the second transceiver port at a second group of signal pins. The first group of signal pins comprises signal pins in a signal-signal-ground configuration and the second group of signal pins comprises signal pins in a ground-signal-signal-ground configuration. | 2013-08-29 |
20130223485 | Hybrid Automatic Repeat Request With Feedback Dependent BIT Selection - A multi-bit HARQ feedback is transmitted by a receiver to a transmitter. The multi-bit feedback is a function of a level of convergence reached by a decoder when the previously transmitted coded data bits bit were decoded. The transmitter is configured to select a set of coded data bits for a retransmission as a function of the multi-bit feedback. In some embodiments, different redundancy versions of the coded data bits may be selected as a function of the multi-bit feedback. In other embodiments, a bit puncturing or bit repetition pattern may be selected as a function of the multi-bit feed back. | 2013-08-29 |
20130223486 | BASEBAND BEAMFORMING - Exemplary embodiments are directed to beamforming. A device may include a plurality of inputs for receiving differential in-phase and quadrature data. The device may further include a plurality of switching elements coupled to the plurality of inputs and configured to enable for rotation of the differential in-phase and quadrature data at baseband. | 2013-08-29 |
20130223487 | WIRELESS APPARATUS AND WIRELESS COMMUNICATION SYSTEM - In a wireless apparatus, a first receiver receives, from a wireless reception apparatus, a transmit beam pattern with better reception quality among transmit beam patterns of a transmitter switched to by a first switching unit. A generation unit generates a transmit beam pattern obtained by rotating a phase of the received transmit beam pattern. A second switching unit switches a transmit beam pattern of the transmitter to the received transmit beam pattern and the generated transmit beam pattern. A second receiver receives, from the wireless reception apparatus, the transmit beam pattern of a combination with better reception quality out of combinations of the switched transmit beam patterns and receive beam patterns switched to by the wireless reception apparatus. A setting unit sets a transmit beam pattern of the transmitter in the transmit beam pattern received by the second receiver. | 2013-08-29 |
20130223488 | APPARATUS FOR WIDEBAND TRANSMISSION AND RECEPTION FOR MULTIBAND - A wideband transmitting and receiving apparatus including a local oscillator (LO) synthesizer providing a constant output to a wide band is provided. The LO synthesizer may generate LO signals of different amplitudes according to channels. The LO synthesizer may store the amplitudes of the LO signals different according to the channels and compensate the amplitudes of the LO signals using the stored amplitudes. Accordingly, the LO synthesizer may output the LO signals of uniform amplitudes irrespective of the channels. | 2013-08-29 |
20130223489 | Transceiver IQ Calibration System and Associated Method - A transceiver in-phase and quadrature (IQ) calibration method is provided. When calibrating the transceiver, an adjusting unit is connected to an output terminal of a transmitter to receive a first radio-frequency (RF) signal. The adjusting unit adjusts a phase delay of the first RF signal to generate a second RF signal to be inputted to an input terminal of a receiver. Through adjusting the phase delay of the first RF signal, both the transmitter and the receiver can be calibrated at the same time. | 2013-08-29 |
20130223490 | Opportunistic Modem - An opportunistic modem (OM) system receives user data at an input port and transmits a modem output signal at an output port. In one aspect the data is initially transmitted over a first carrier in the modem output signal having a first frequency and bandwidth. Subsequently a second carrier having a second frequency and bandwidth is established, initially used to transmit pilot data, and then the user data is divided between the first and second carriers in the modem output signal. In another aspect the data is initially transmitted over a first and a second carrier in the modem output signal having respective first and second frequencies and bandwidths. Subsequently the second carrier is used to transmit pilot data for a period time. After the period of time the second carrier is de-established. In another aspect establishment and de-establishment of carriers is performed in response to detected interference. | 2013-08-29 |
20130223491 | Methods, Systems and Products for Providing Modem Functions - A network interface to a data network has a modulator-demodulator. The modulator-demodulator receives a modulated carrier signal from an input connection. A power circuit connected to the input connection receives electrical power from a loop plant and provides the electrical power to the modulator-demodulator. | 2013-08-29 |
20130223492 | MEASURING THE I/Q IMPAIRMENTS OF A RECEIVER - Systems and methods for measuring transmitter and/or receiver I/Q impairments are disclosed, including iterative methods for measuring transmitter I/Q impairments using shared local oscillators, iterative methods for measuring transmitter I/Q impairments using intentionally-offset local oscillators, and methods for measuring receiver I/Q impairments. Also disclosed are methods for computing I/Q impairments from a sampled complex signal, methods for computing DC properties of a signal path between the transmitter and receiver, and methods for transforming I/Q impairments through a linear system. | 2013-08-29 |
20130223493 | SIGNAL TRANSITION DETECTION CIRCUIT AND METHOD OF THE SAME - A signal transition detection circuit is provided. The signal transition detection circuit comprises a counter module, a DAC, a comparator and a digital sampling module. The counter module generates a digital step signal. The DAC converts the digital step signal into an analog input signal and transmits it to an under-test circuit such that the under-test circuit generates an output signal transiting from a first stable level to a second stable level, wherein a transition section is located between the first and the second stable level. The comparator receives and compares the output signal with a default value to generate a normalized output signal. The digital sampling module samples the normalized output signal to retrieve impulses such that when the number of the impulses is accumulated to be larger than a reference value, a corresponding step of the digital step signal is determined to be a transition point. | 2013-08-29 |
20130223494 | Time-Stamped Emissions Data Collection for Process Control Devices - The claimed method and system provide a process control device monitoring system and a process control valve assembly with a process control device monitoring system to measure one or more operating states of a process control device. The process control device monitoring system may also associate a time-stamp with the one or more measured operating states of the process control device in response to a trigger generated based on the one or more measured operating states. The process control device monitoring system may also transmit the time-stamp and an indication of the one or more operating states to a monitoring device. | 2013-08-29 |
20130223495 | TECHNIQUES USING DIFFERENTIAL PRECODING FOR HIGHLY CORRELATED CHANNELS IN WIRELESS NETWORKS - An embodiment of the present invention provides a method of using differential precoding feedback for correlated channels, comprising, transmitting by a mobile station (MS) as feedback an index angle for a differential discrete Fourier transform (DFT) codeword corresponding to a shift of a dominant beam represented by a base codeword, where the feedback corresponds to a precoding vector V(t)=Q({circumflex over (θ)}) for index angle θ, where | 2013-08-29 |
20130223496 | Method and Device for Determining a Quality of a Clock Signal - Method, device and system for detecting a disturbance, e.g., at least one short mechanical impact (shock or vibration) on a clock of a slave device by detecting a non-typical variation of a tracking error, i.e., a tracking error having a deviation that exceeds a predetermined threshold, wherein such a non-typical variation can be determined by the deviation from a statistical measure, e.g., a variance or a standard deviation, such that the determination of the quality of a clock signal is advantageously allowed and thus suitable counter-measures are provided. The method, device and system are applicable for all kinds of technical systems comprising slave devices that have a clock, e.g., devices in industrial and automation systems. The method, device and system are also applicable in communication systems that use a protocol to synchronize the clocks of its devices, e.g., Profinet. | 2013-08-29 |
20130223497 | Method and System for Compensating a Delay Mismatch Between a First Measurement Channel and a Second Measurement Channel - A method and a system for compensating a delay mismatch between a first measurement channel and a second measurement channel is disclosed. A method for compensating a delay mismatch between a first measurement channel and a second measurement channel includes providing a reference point for starting the first and second measurement channel, and starting the first measurement channel after expiration of a first delay period which begins at the reference point. The method further includes starting the second measurement channel after expiry of a second delay period which begins at the reference point, wherein a difference between a length of the first delay period and a length of the second delay period is substantially equal to the delay mismatch between the first measurement channel and the second measurement channel. | 2013-08-29 |
20130223498 | TECHNIQUES FOR CHANNEL ESTIMATION IN MILLIMETER WAVE COMMUNICATION SYSTEMS - A method for performing channel estimation in a millimeter wave wireless communication system. The method includes receiving complementary sequences at a receiver of the millimeter wave wireless communication system, wherein the received complementary sequences are generated at a first sampling rate; producing special complementary sequences from the received complementary sequences; cross-correlating the special complementary sequences with an input signal related to the received complementary sequences, wherein the cross-correlation is performed at a second sampling rate and the second sampling rate is higher than the first sampling rate; and analyzing the result of the cross-correlation to estimate at least characteristics of a channel between the receiver and a transmitter of the millimeter wave wireless communication system. | 2013-08-29 |
20130223499 | Transforming I/Q Impairments Through a Linear System - Systems and methods for measuring transmitter and/or receiver I/Q impairments are disclosed, including iterative methods for measuring transmitter I/Q impairments using shared local oscillators, iterative methods for measuring transmitter I/Q impairments using intentionally-offset local oscillators, and methods for measuring receiver I/Q impairments. Also disclosed are methods for computing I/Q impairments from a sampled complex signal, methods for computing DC properties of a signal path between the transmitter and receiver, and methods for transforming I/Q impairments through a linear system. | 2013-08-29 |
20130223500 | DUAL CARRIER RECOVERY LOOP - The present invention relates to a receiver being arranged to estimate a received signal. The receiver comprises demodulator means arranged to demodulate received signal data symbols of a higher constellation order such that a demodulated signal is obtained. The demodulator means comprises a main carrier recovery Phase-Locked Loop | 2013-08-29 |
20130223501 | Error Prediction For Two-Stage Receivers - Apparatus, methods, and programs products are disclosed that perform the following techniques: in a receiver comprising first and second stages, each stage at least decoding information corresponding to a user equipment, wherein the second stage performs decoding only if the first stage completes decoding with a fail, predicting whether decoding performed by the second stage for the user equipment will complete with a pass or fail; and prior to completion of the second stage, sending an indication of the predicted pass or fail to the user equipment. | 2013-08-29 |
20130223502 | RANK SIGNALING IN SPATIAL MULTIPLEXING - Method, receiver and computer program product for processing a signal transmitted over a wireless network from a plurality of spatially separated transmit antennas of a transmitter using a Multiple-Input Multiple-Output transmission. The signal is received at a plurality of receive antennas, the signal comprising a plurality of data streams. The channel quality for each of the data streams in the received signal is determined and based on the determined channel quality of the data streams, the number of independent data streams that can be supported in the Multiple-Input Multiple-Output transmission of the signal is determined. An indication of the determined number is transmitted to the transmitter. | 2013-08-29 |
20130223503 | REDUCING SIGNAL DEGRADATION IN WIRELESS COMMUNICATIONS BASED ON TIME REVERSAL - Techniques, apparatus and systems for providing radio frequency wireless communications based on time reversal of the channel impulse response of an RF pulse in a transmission channel between an RF transmitter and an RF receiver to enhance reception and detection of an RF pulse at the RF receiver against various effects that can adversely affect and complicate the reception and detection of the RF pulse at the RF receiver. | 2013-08-29 |
20130223504 | Estimation of Low-Amplitude Echoes in a Received Communication Signal - A system and method for identifying minor echoes present in an input signal in the situation where a set of major echoes has already been identified from the input signal. The method includes: computing a spectrum F corresponding to a sum of the major echoes; computing a weighted power spectrum S | 2013-08-29 |
20130223505 | ADAPTIVE EQUALIZER UTILIZING EYE DIAGRAM - A communications system comprising a communications media. A receiver coupled to the communications media and configured to receive a data signal from the communications media. An adaptive equalizer configured to process the data signal and to adjust a multi-frequency inverse transfer function to compensate for a multi-frequency transfer function of the communications media. | 2013-08-29 |
20130223506 | Flexible adaptive equalizer - Flexible adaptive equalizer. Communications may be supported between two or more respective devices within a communications system via one or more available channels. Such channels may be different respective communication channels or may be logical partitions of a given communication channel. Appropriate adaptation and provision of resources within one or more devices within the system may be performed based upon any of a number of characteristics and/or considerations associated with one or more devices, channels, etc. within the system. A number of equalizer elements may be employed to perform processing of respective signal(s) received via respective channel(s). Adaptation of which equalizer elements are employed for the respective channels may be modified, adapted, etc. over time based upon any of such number of characteristics and/or considerations. Also, a number of pre-equalizer elements may also be employed to perform processing of signal(s) to be transmitted via respective channel(s). | 2013-08-29 |
20130223507 | GENERATING PULSE WIDTH MODULATED SIGNALS - A technique includes using a first signal that is produced by a counter to generate a center-aligned pulse width modulation signal having a first time profile and using the first signal to concurrently generate a pulse width modulation signal that has a second time profile that is different from the first time profile. | 2013-08-29 |
20130223508 | High Resolution Pulse Width Modulator - A pulse width modulator has a first clock source providing a clock signal to a set input of an output controller configured to set a pulse width output signal and having a reset input to reset the pulse width output signal. A duty cycle control unit is coupled with the reset input of the output controller, wherein the duty cycle control unit has a numerical controlled oscillator (NCO) being coupled with a register and configured to provide for a direct digital synthesis to produce a specified frequency according to a value set in the register. Furthermore, logic is provided for receiving a signal from a second clock source and the pulse width output signal to trigger the numerical controlled oscillator. | 2013-08-29 |
20130223509 | CONTENT NETWORK OPTIMIZATION UTILIZING SOURCE MEDIA CHARACTERISTICS - Content is prepared for delivery to a user device by creating multiple encodings that are then stored in a content delivery network. Encodings range from a minimum-rate encoding to a maximum-rate encoding. For each segment of the content, a dynamics metric is compared to thresholds defining intervals of a dynamic range. The intervals, ranging from a minimum-dynamics interval to a maximum-dynamics interval, represent corresponding levels of dynamics and are mapped to corresponding encodings. The comparing results in selection of an encoding based on the dynamics metric, which may be a scene change count that reflects the number of independently renderable frames in the segment, available in MPEG encoding. Selections are included in download control data used by the user device to download the content. The user device selectively retrieves different encodings of segments, achieving lower bandwidth usage without sacrificing fidelity. | 2013-08-29 |
20130223510 | Encoding Optimization Using Quality Level of Encoded Segments - In one embodiment, a method includes encoding a media file using a variable bitrate encoding algorithm based on a plurality of bitrate ranges to generate a set of encoded segments. For each bitrate range, an encoded segment for each segment of the media file is determined from the set of encoded segments based on a quality level of the encoded segment and each bitrate range. The method then identifies a playlist for each bitrate range including the encoded segment for each segment of the media file that was determined for each bitrate range. At least one playlist includes an encoded segment that was generated based on another bitrate range using the variable bitrate encoding algorithm. | 2013-08-29 |
20130223511 | METHOD AND DEVICE FOR MIXING VIDEO STREAMS AT THE MACROBLOCK LEVEL - The invention relates to a method and device for mixing video streams in a video mixer device, by means of which a plurality of input video streams from different subscribers which are encoded with code words for macroblocks and in which the code words have interdependencies are combined into an output video stream. The input video streams are at least entropy-decoded to such a degree that the dependencies among the code words are dissolved, wherein the macroblocks are re-organized and mixed with each other, and the mixed macroblocks are entropy-encoded to obtain a new dedicated video stream. | 2013-08-29 |
20130223512 | METHOD OF STORING MOTION VECTOR INFORMATION AND VIDEO DECODING APPARATUS - A video decoding apparatus includes a bitstream parser, a calculator and a memory. The bitstream parser is provided to receive a video bitstream and extracting a set of constraints associated with the video bitstream, wherein the set of constraints has information associated with a direct_8×8_inference flag for a macroblock of a picture, wherein the macroblock has N sub-macroblock partitions. The calculator is provided to calculate first motion vector information associated with the macroblock and obtain second motion vector information associated with K of the N sub-macroblock partitions from the first motion vector information according to the information associated with the direct_8×8_inference flag, wherein K is less than N. The memory is provided to store the second motion vector information. | 2013-08-29 |
20130223513 | Error Resilient Rate Distortion Optimization for Image and Video Encoding - Error resilient rate distortion optimization (ERRDO) is used for transmitting high quality images and video over constrained bandwidth networks, e.g., in streaming applications. Transmitting high quality images and video by reducing computational complexity is described. | 2013-08-29 |
20130223514 | VIDEO ENCODING DEVICE, VIDEO DECODING DEVICE, VIDEO ENCODING METHOD, VIDEO DECODING METHOD, AND PROGRAM - A video encoding device includes: transform means | 2013-08-29 |
20130223515 | Flicker Reduction Circuit and Method for Compressed Video Transmission - A system, circuit and method are provided herein for reducing perceived flicker in video images transmitted using compression and bit rate control. According to one embodiment of the method, a parameter used in the video compression scheme is stored. The parameter stored is one that is subject to adjustment during normal operation of the video compression scheme. Compressed video frame data issued by a compression encoder is used to test for a still-picture condition. When a still-picture condition is detected, the value of the parameter used by the video compression scheme is fixed to the stored value for the duration of the still-picture condition. An embodiment of the system includes an encoder, buffer, bit rate controller, and flicker reduction circuit. An embodiment of the flicker reduction circuit includes a still-picture detection circuit operably coupled to a compressed data path beginning at the output of the encoder. | 2013-08-29 |
20130223516 | BLOCK QUANTIZER IN H.264 WITH REDUCED COMPUTATIONAL STAGES - An apparatus including a first circuit, a second circuit, a third circuit, and a fourth circuit. The first circuit may be configured to generate a first intermediate signal in response to a first input signal and a second input signal. The first intermediate signal generally comprises a product of the first input signal and the second input signal. The second circuit may be configured to generate a second intermediate signal by selecting between a first value and a second value in response to a sign of the first signal. The third circuit may be configured to generate a third intermediate signal in response to the first intermediate signal and the second intermediate signal. The third intermediate signal generally comprises a sum of the first intermediate signal and the second intermediate signal. The fourth circuit may be configured to generate an output signal in response to the third intermediate signal and a third input signal. | 2013-08-29 |
20130223517 | IMAGE CODING METHOD AND IMAGE DECODING METHOD - An image coding method includes: obtaining a pixel signal of a current region to be processed; calculating offset information of the current region; applying offset to the current region using the offset information; outputting the offset information; outputting an offset signal resulting from the applying of offset; and controlling the applying of offset. | 2013-08-29 |
20130223518 | IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS - An image coding method includes: node processing on a node in a tree structure; and coding on a frequency coefficient of an image block of a leaf node in the tree structure or a frequency coefficient of an image block of its parent node. The node processing includes: when the node processing is performed on a parent node having child nodes, assigning a position of an image block of a current child node and a position of an image block of the parent node, to arguments of the node processing, and recursively calling the node processing for the child node; and when the node processing is performed on a leaf node, assigning a position of an image block of the leaf node and a position of an image block of a parent node of the leaf node, to arguments of the coding processing, and calling the coding processing. | 2013-08-29 |
20130223519 | Method Of Removing A Blocking Artifact Using Quantization Information in a Filtering System - In one embodiment, the method includes obtaining quantization information related to at least one of a first block and an adjacent second block, comparing the quantization information with a predefined constant value, and performing a filtering process based on a result from the comparing step. The filtering process includes calculating a value of at least one pixel in the first block based on pixel values of at least two pixels in the first block, and calculating a value of at least one pixel in the second block based on pixel values of at least two pixels in the second block. The at least two pixels in the first block and the at least two pixels in the second block are successive pixels across a block boundary between the first block and the second block. | 2013-08-29 |
20130223520 | Method Of Removing A Blocking Artifact Using Quantization Information in a Filtering System - In one embodiment, the method includes obtaining quantization information related to at least one of a first block and an adjacent second block, comparing the quantization information with a predefined constant value, obtaining block type information for the first and second block, and performing a filtering process based on a result from the comparing step when both of the first block and the second block are intra-coded blocks according to the block type information. | 2013-08-29 |
20130223521 | HIGH THROUGHPUT RESIDUAL CODING FOR A TRANSFORM SKIPPED BLOCK FOR CABAC IN HEVC - A system utilizing a high throughput residual coding mode for CABAC in HEVC is described. The system may include an electronic device configured to obtain a bitstream; recover a binary symbol from the obtained bitstream; determine whether the binary symbol is to be decoded using a high throughput residual coding mode; in response to determining that the binary symbol is not to be decoded using the high throughput residual coding mode, use a first coding technique to obtain a block of Transformed and Quantized Coefficients (TQCs); and, in response to determining that the binary symbol is to be decoded using the high throughput residual coding mode, use a second different coding technique to obtain a residual sample. | 2013-08-29 |
20130223522 | METHOD AND APPARATUS FOR ENCODING/DECODING VIDEO USING HIGH-PRECISION FILTER - Disclosed is a video encoding apparatus. The video encoding apparatus includes a prediction unit for generating a prediction block based on interpolating sub-samples of a reference block referenced by a motion vector of a current block. The video encoding apparatus further includes a subtraction unit for generating a residual block based on subtracting the prediction block from the current block and a transform unit for generating a frequency-transformed block based on transforming the residual block. The video encoding apparatus further includes a quantization unit for generating a quantized frequency-transformed block based on quantizing the frequency-transformed block and an encoding unit for encoding the quantized frequency-transformed block into a bitstream. | 2013-08-29 |
20130223523 | METHODS AND APPARATUS FOR VIDEO ENCODING AND DECODING USING MOTION MATRIX - Methods and apparatus are provided for video encoding and decoding using a motion matrix. An apparatus includes a video encoder for encoding a picture in a video sequence using a motion matrix. The motion matrix has a rank below a given threshold and a sparse representation with respect to a dictionary. The dictionary includes a set of atoms and basis vectors for representing the picture and for permitting the picture to be derived at a corresponding decoder using only the set. The dictionary formed from a set of reference pictures in the video sequence. | 2013-08-29 |
20130223524 | DYNAMIC INSERTION OF SYNCHRONIZATION PREDICTED VIDEO FRAMES - A video bitstream can be encoded and sent over a computer network to a decoding computer system. The bitstream can follow a regular prediction structure when an encoding computer system is not notified of lost data from the bitstream. A notification of lost data in the bitstream can be received. The lost data can include at least a portion of a reference frame of the bitstream. In response, a synchronization predicted frame can be dynamically encoded with a prediction that references one or more other previously-sent frames in the bitstream and that does not reference the lost data. The synchronization predicted frame can be inserted in the bitstream in a position where the regular prediction structure would have dictated inserting a different predicted frame with a prediction that would have referenced the lost data according to the regular prediction structure. | 2013-08-29 |
20130223525 | PIXEL PATCH COLLECTION FOR PREDICTION IN VIDEO CODING SYSTEM - In a video coding system, an encoder may include a coding engine to predictively code input video, a decoder to reconstruct reference pictures generated by the coding engine, a reference picture cache to store the reconstructed reference pictures, a patch cache to store prediction patches generated from other sources, and a prediction search unit to search among the reference picture cache and the patch cache to generate prediction references for use by the coding engine while coding input video. The prediction patches may be assembled from a variety of sources including: predefined image content, reference pictures being evicted from the reference picture cache, image content of prior coding sessions and image data stored by applications on a common terminal where the encoder resides. A decoder may store prediction patches in its own patch cache for synchronous decoding. | 2013-08-29 |
20130223526 | IMAGE DECODING METHOD, IMAGE CODING METHOD, IMAGE DECODING DEVICE, IMAGE CODING DEVICE, AND RECORDING MEDIUM - A method for decoding an image divided into plural blocks includes acquiring decoding information of a decoded block in a decoding target image from a storage unit that stores the decoding information of the decoded block and decoding information of blocks in plural decoded images; selecting a decoded image from the plural decoded images; acquiring decoding information of a corresponding block in the selected decoded image from the storage unit; predicting a division mode, which indicates a division shape of a decoding target block, by using the acquired decoding information of the decoded block and the acquired decoding information of the corresponding block; decoding division mode information, which indicates the division mode of the decoding target block based on coded data, and determining the division mode of the decoding target block based on the predicted division mode and the decoded division mode information. | 2013-08-29 |
20130223527 | SWITCH-SELECT SINGLE FRAME REFERENCE - Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame in the sequence as an equal average of brightness values of pixels in non-bidirectionally predicted frames bracketing the sequence of bi-directionally predicted intermediate frames. The brightness values of the pixels in at least one of the non-bidirectionally predicted frames is converted from a non-linear representation. | 2013-08-29 |
20130223528 | METHOD AND APPARATUS FOR PARALLEL ENTROPY ENCODING/DECODING - The present invention relates to an entropy encoding method comprising the following steps: updating probability information using the update information derived based on a bit stream received from an encoder; deriving a bin corresponding to the current codeword based on the updated probability information; and performing the inverse binarization of the derived bin to acquire a syntax element. According to the present invention, video-encoding/decoding efficiency may be improved. | 2013-08-29 |
20130223529 | Scalable Video Encoding Using a Hierarchical Epitome - A method and apparatus are provided for encoding an image sequence and outputting a signal having a layered organization with at least a base layer and an enhancement layer. For at least one current image of the sequence, the method includes constructing a hierarchical epitome associated with the enhancement layer corresponding to a maximum resolution level of the current image, using: an epitome associated with the enhancement layer corresponding to the maximum resolution level of the current image; and at least one epitome associated with a preceding layer corresponding to a resolution level lower than the maximum resolution level of the current image. | 2013-08-29 |
20130223530 | Referenceable Frame Expiration - Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame in the sequence as an equal average of brightness values of pixels in non-bidirectionally predicted frames bracketing the sequence of bi-directionally predicted intermediate frames. The brightness values of the pixels in at least one of the non-bidirectionally predicted frames is converted from a non-linear representation. | 2013-08-29 |
20130223531 | VIDEO CODING USING TEMPORALLY COHERENT DYNAMIC RANGE MAPPING - A more efficient co-use of dynamic range mapping on the one hand and temporal prediction on the other hand such as, for example, in order to code HDR frame sequences, is achieved by exploiting the concept of weighted prediction in order to transition from the mapping parameter from the reference frame to the currently temporally predicted frame. By this measure, the temporal prediction does not fail and despite the frame-wise variation in the dynamic range mapping, encoding efficiency is, thus, maintained. As a favorable side aspect, weighted temporal prediction is already within the capabilities of existing video coding stages such as, for example, the H.264/AVC. | 2013-08-29 |
20130223532 | MOTION ESTIMATION AND IN-LOOP FILTERING METHOD AND DEVICE THEREOF - A motion estimation method is provided. The method has the following steps of: determining a start searching point according to multiple neighboring macroblocks of a current macroblock, wherein the current macroblock corresponds to a searching window; determining a best candidate pixel according to a first line segment where the start searching point is located, and a second/third line segment above/beneath the first line segment; determining whether the best candidate pixel is located at the first line segment; if so, setting a candidate motion vector corresponding to the best candidate pixel as a first motion vector of the current macroblock; and if not, dynamically adjusting the second line segment or the third line segment in the searching window to update the best candidate pixel, and retrieving the first motion vector of the current macroblock corresponding to the updated best candidate pixel. | 2013-08-29 |
20130223533 | VIDEO CODING - Improved video coding is described to encode video data within a sequence of video frames. To this end, at least a portion of a reference frame is encoded to include motion information associated with the portion of the reference frame. At least a portion of a predictable frame that includes video data predictively correlated to said portion of said reference frame is defined based on the motion information. At least said portion of the predictable frame is encoded without including corresponding motion information and including mode identifying data. The mode identifying data indicate that the encoded portion of the predictable frame can be directly derived using at least the motion information associated with the portion of the reference frame. | 2013-08-29 |
20130223534 | VIDEO CODEC WITH SHARED INTERPOLATION FILTER 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 video processing device utilizes an interpolation filter to perform an encoding function in the encoding mode and to perform a decoding function in a decoding mode. | 2013-08-29 |
20130223535 | METHOD AND SYSTEM FOR FRAME RATE ADAPTATION - Described herein are a method and system for frame rate adaptation. There may be conditions that require the rate of a video sequence to be dynamically controlled, and a frame interval may be adaptively selected every frame. A frame within the video sequence may contain, for example, a time stamp that is transmitted to a decoder to indicate the change in temporal spacing between frames. | 2013-08-29 |
20130223536 | PARALLEL PYRAMID ENTROPY CODING FOR VIDEO AND IMAGE COMPRESSION - Methods, systems, and computer program products are provided to divide code blocks, such as blocks of quantized coefficient of image or video data, into smaller blocks and sub-blocks that can be processed in parallel using layered entropy coding and decoding scheme. This division is accomplished while still encoding the entire code block using the same layered entropy coding scheme. | 2013-08-29 |
20130223537 | Video Bit Stream Transmission System - In distribution of high definition video signals in which it is possible to freely move viewing regions, systems and methods allow for determining viewing movement without dependence on user operation. In at least one embodiment, a video region of an input video signal is divided into a specified number of regions, and generates a plurality of video signals corresponding to each of the divided regions. The plurality of video signals are encoded to generate a plurality of video bit streams that are stored in a video bit stream group storage section. A video bit stream is extracted from the storage section based on the viewpoint movement information, and a transmission video bit stream is transmitted to a receiving unit. Viewpoint movement information is determined in order to specify a region for viewing from among the video regions. The viewpoint information is determined regardless of user instruction, based on specified data. | 2013-08-29 |
20130223538 | CUSTOMIZED PLAYBACK AT SINK DEVICE IN WIRELESS DISPLAY SYSTEM - This disclosure describes techniques to improve a user experience in a Wireless Display (WD) system. The WD system includes a source device that provides media data to one or more sink devices. The techniques are directed toward reducing end-to-end latency in the WD system while improving video playback quality at the sink devices. More specifically, the techniques include customized playback at the sink devices based on the type of media data received from the source device. If the media data only includes video data and does not include audio data, a processing pipeline of the sink device is configured to render the video data without waiting to synchronize with non-existent audio data. If the media data includes both video data and audio data, an audio rendering start-up timer is reduced and the processing pipeline renders synchronized audio and video data according to the reduced start-up timer. | 2013-08-29 |
20130223539 | METHOD FOR TRANSMITTING STREAM BETWEEN ELECTRONIC DEVICES AND ELECTRONIC DEVICE FOR THE METHOD THEREOF - A technique for transmitting a video stream between a first electronic device and a second electronic device is provided. The first device receives an encoded video stream and determines whether an encoding format of the encoded video stream is a format decodable by a second electronic device. If the format is decodable, the encoded video stream is transmitted without a re-encoding operation to the second device. The video stream is displayed at the first device delayed by a determined delay time enabling the video stream to be displayed at the second device substantially synchronized with the display at the first device. | 2013-08-29 |
20130223540 | COMPRESSED DOMAIN SYSTEM AND METHOD FOR COMPRESSION GAINS IN ENCODED DATA - A system and method for compressed domain compression are provided for improving compression gains in an encoded image, such as a Joint Photographic Experts Group (JPEG)-encoded images, or encoded video, such as Motion Joint Photographic Experts Group (Motion JPEG)-encoded video, without fully decoding and re-encoding the compressed images or video. | 2013-08-29 |
20130223541 | METHOD AND APPARATUS FOR VIDEO CODING, PREDECODING, AND VIDEO DECODING FOR VIDEO STREAMING SERVICE, AND IMAGE FILTERING METHOD - A method and apparatus for video encoding, predecoding, and video decoding for video streaming services. The video encoding method includes encoding first and second video sequences into first and second bitstreams using scalable video coding, wherein at least one of resolution, frame rate, and image quality of the second video sequence is different from that of the first video sequence, and combining the first and second bitstreams into a super bitstream. | 2013-08-29 |
20130223542 | Sample Adaptive Offset (SAO) Parameter Signaling - Techniques for signaling of sample adaptive offset (SAO) information that may reduce the coding rate for signaling such information in the compressed bit stream are provided. More specifically, techniques are provided that allow SAO information common to two or more of the color components to be signaled using one or more syntax elements (flags or indicators) representative of the common information. These techniques reduce the need to signal SAO information separately for each color component. | 2013-08-29 |
20130223543 | METHOD AND SYSTEM FOR DETECTING FAILURES OF NETWORK NODES - Systems and methods for detecting device failures in a network having nodes coupled to a central controller, in which a first of the nodes communicates with the central controller via a second of the nodes. When the second node determines that the first node has not transmitted a predetermined number of messages over a predefined number of time periods, the second node provides a failure alert to the central controller. The central controller records a failure alert received from the second node in a log. Based on a set of failure alerts received from a number of nodes recorded in the log, the central controller determines whether the first node has failed. | 2013-08-29 |
20130223544 | SYSTEM AND METHOD FOR EFFICIENT FREQUENCY ESTIMATION IN BURST-MODE COMMUNICATION - Aspects of the invention provide a method of introducing pilot symbols for synchronization that minimizes overhead while allowing for a large frequency uncertainty by inserting the pilot groups non-periodically in burst communication systems. The pilot sequence could be used for establishing all synchronization, including timing, frequency and phase, or, alternatively, it could be used only for carrier phase and frequency estimation with some other means used for establishing start-of-burst timing. | 2013-08-29 |
20130223545 | Method, Apparatus, and System for Coding and Modulating Data - A method, an apparatus, and a system for coding and modulating data are disclosed. The method includes: obtaining, from a receiver and a transmitter, parameters for calculating power consumption of the transmitter; calculating, according to the parameters, the power consumption of the transmitter under various combinations of modulation orders and coding rates supported by the transmitter; and selecting a bitwidth, modulation order, and coding rate corresponding to minimum power consumption of the transmitter to code and modulate data sent to the receiver. The method, apparatus, and system provided in embodiments of the present application save power consumption of the transmitter, and greatly improve energy utilization of a wireless device having a digital processing unit. | 2013-08-29 |
20130223546 | MULTI-CARRIER COMMUNICATION APPARATUS - A local carrier wave output from a synthesizer to quadrature demodulators is multiplied by an offset that makes a frequency shift by an integer number of subcarriers in units of sub-carrier bands. The offset is set to a value obtained by multiplying the number sequentially counted up from 0 to the number of unused sub-carriers included in guard tones in a signal band by the bandwidth of a sub-carrier. By shifting the frequency of the local carrier wave at the time of quadrature demodulation with the offset, the SNR of a baseband signal is prevented from being constantly degraded by a frequency characteristic possessed by the circuit of a receiver in a particular sub-carrier signal. Especially, by preventing a pilot signal from being constantly degraded, the signal can be received with higher accuracy. | 2013-08-29 |
20130223547 | METHOD OF DESIGNING CODEBOOK FOR NETWORK MULTIPLE INPUT MULTIPLE OUTPUT COMMUNICATION SYSTEM AND METHOD OF USING THE CODEBOOK - Provided herein is a method of designing a network codebook that may be shared by a plurality of base stations. Also provided herein is a feedback method of a terminal using the network codebook. The network codebook design method may design the network codebook by processing a pre-defined first codebook based on large scale fading of the base stations. The terminal may more effectively feed back a preferred matrix indicator with respect to the network codebook. | 2013-08-29 |
20130223548 | METHOD FOR TRANSMITTING SIGNAL IN MULTIPLE NODE SYSTEM - Provided is a signal transmission method of a multi-node system employing a plurality of nodes and a base station that can control each of the plurality of nodes. The method includes: transmitting per-node transmission information to a user equipment; transmitting at least one stream to the user equipment by applying a precoding matrix determined for each node in at least one node among the plurality of nodes; and receiving per-node feedback information from the user equipment, wherein the per-node feedback information includes information on a precoding matrix applicable to a node which transmits the at least one stream. | 2013-08-29 |
20130223549 | METHOD, MOBILE TERMINAL, BASE STATION, AND SYSTEM FOR REPORTING BEST COMPANION PRECODING MATRIX INDEX IN COMMUNICATION SYSTEM WITH DOUBLE CODEBOOK - A method, mobile terminal, and system for reporting BCI are provided, the method comprises the steps of: obtaining a PMI W | 2013-08-29 |
20130223550 | DISCRETE MULTI-TONE SYSTEMS FOR HALF-DUPLEX IP LINKS - A DMT system for a half-duplex two-way link carries Internet protocol encoded video stream on a coaxial cable that also carries a baseband rendition of the same video stream. A plurality of downlink symbols modulated on a subband of subcarriers in a downlink signal are decoded. The symbols may carry data encoded on a subband using a constellation of QAM symbols assigned to the subband. Other subbands may be associated with different QAM constellations. Lower-order constellations of QAM symbols may be assigned to subbands that include higher-frequency subcarriers and higher-order constellations of QAM symbols may be assigned to subbands that include lower-frequency subcarriers. A block error correction decoder may be synchronized based on an identification of the first constellation of QAM symbols and information identifying boundaries between the plurality of downlink symbols. | 2013-08-29 |
20130223551 | CHANNEL STATE INFORMATION FEEDBACK - An apparatus and method for feeding back channel state information is disclosed. The method is for providing channel state information for a wireless communications channel provided between a first network node having at least one transmission antenna and a second network node having at least one reception antenna. The method comprises the steps of: determining characteristics of each tap resolvable in the time domain of at least one sub-channel within said channel from signals received by said at least one reception antenna over said channel from said at least one transmission antenna; arranging said characteristics into at least one vector; quantising said at least one vector by selecting one of a plurality of codebook vectors at a first level of a hierarchical codebook of vectors; and providing, to said first network node, an indication of an index to said one of a plurality of codebook vectors. | 2013-08-29 |
20130223552 | DATA TRANSMISSION APPARATUS, DATA TRANSMISSION SYSTEM AND DATA TRANSMISSION METHOD - A data transmission apparatus includes a plurality of transmission data generation units that generate a first symbol by attaching one control bit to data of a predetermined bit length or a second symbol including data of a bit length longer than the predetermined bit length by one bit. The data transmission apparatus includes a transmission unit that transmits the first symbol or the second symbol generated by each of the transmission data generation units. At least one transmission data generation unit, in each timing at which the plurality of transmission data generation units generate the first symbol or the second symbol, generates the first symbol and the other transmission data generation units generate the second symbol. | 2013-08-29 |
20130223553 | Scattered Pilot Pattern And Channel Estimation Method For MIMO-OFDM Systems - A method and apparatus are provided for reducing the number of pilot symbols within a MIMO-OFDM communication system, and for improving channel estimation within such a system. For each transmitting antenna in an OFDM transmitter, pilot symbols are encoded so as to be unique to the transmitting antenna. The encoded pilot symbols are then inserted into an OFDM frame to form a diamond lattice, the diamond lattices for the different transmitting antennae using the same frequencies but being offset from each other by a single symbol in the time domain. At the OFDM receiver, a channel response is estimated for a symbol central to each diamond of the diamond lattice using a two-dimensional interpolation. The estimated channel responses are smoothed in the frequency domain. The channel responses of remaining symbols are then estimated by interpolation in the frequency domain. | 2013-08-29 |
20130223554 | SPATIAL MULTIPLEXING COMMUNICATION SYSTEM AND METHOD - Provided is a communication system for transmitting data using a plurality of interference-free communication channels. A transmission apparatus may inactivate a portion from among a plurality of transmit antennas and thereby group transmit antennas into a plurality of antenna groups. A channel formed between each antenna group and a reception apparatus may have a relatively low correlation and thus, the may be assumed to be independent. Accordingly, the transmission apparatus and the reception apparatus may transmit data using separate interference-free communication channels. | 2013-08-29 |
20130223555 | ITERATIVE NONLINEAR PRECODING AND FEEDBACK FOR MULTI-USER MULTIPLE-INPUT MULTIPLE-OUTPUT (MU-MIMO) WITH CHANNEL STATE INFORMATION (CSI) IMPAIRMENTS - An iterative nonlinear preceding method based on, for example. Tomlinson-Harashima Preceding (THP) may be implemented in a MU-MIMO system to alleviate the performance degradation due to mismatches between actual Channel State Information (CSI) and impaired CSI available at a transmitter. In such a method, the effective channel may be fed back rather than a nonprecoded channel for a relay backhaul channel such that the iterative precoding and effective channel feedback may reduce the sensitivity to quantization errors and improve spectrum usage efficiency. Additionally, a Channel Quality Indicator (CQI) may be used to estimate a signal-to-interference-plus-noise (SINK) ratio based on quantization errors to accurately derive the effective channel quality of the receiver. | 2013-08-29 |
20130223556 | Method and System for Channel Estimation in a Single Channel MIMO System with Multiple RF Chains for WCDMA/HSDPA - Aspects of a method and system for channel estimation in a MIMO communication system with multiple RF chains for WCDMA/HSDPA may comprise receiving a plurality of communication signals from a plurality of transmit antennas. A plurality of vectors of baseband combined channel estimates may be generated based on phase rotation of the received plurality of communication signals. A matrix of processed baseband combined channel estimates may be generated based on the generated plurality of vectors of baseband combined channel estimates. A plurality of amplitude and phase correction signals may be generated based on the generated plurality of vectors of baseband combined channel estimates. An amplitude and a phase of at least a portion of the received plurality of communication signals may be adjusted based on the generated plurality of amplitude and phase correction signals, respectively. | 2013-08-29 |
20130223557 | Method and System for Pre-Equalization in a Single Weight Spatial Multiplexing MIMO System - Certain aspects of the method may comprise receiving a plurality of spatially multiplexed communication signals from a plurality of transmit antennas at a base station. A plurality of vectors of baseband combined channel estimates may be generated based on phase rotation of the received plurality of spatially multiplexed communication signals. A plurality of pre-equalization weights may be generated based on the generated plurality of vectors of baseband combined channel estimates. The received plurality of spatially multiplexed communication signals may be modified based on the generated plurality of pre-equalization weights. At least a portion of the generated plurality of pre-equalization weights may be fed back to the base station for modifying subsequently transmitted spatially multiplexed communication signals which are transmitted from at least a portion of the plurality of transmit antennas at the base station. | 2013-08-29 |
20130223558 | SYSTEM AND METHOD FOR CONSTRUCTING UNIQUE WORD SETS FOR EFFICIENT DETECTION USING ORTHOGONAL FUNCTIONS - A system and method of construction of unique word sets together with an efficient method of implementing correlation with the members of the set is presented. The set of UWs is constructed by breaking a UW sequence in to equal length segments, and then multiplying this vector by an orthogonal matrix. First an arbitrary vector U is chosen of length K for a set of N UWs. Then a matrix H of size N×N is chosen. The columns of H are then repeated L times to form a matrix H′. The set of N UW consists of the rows of H′U | 2013-08-29 |
20130223559 | Data tranmission driver, system and method - A system and method are provided for transmission of data bits across a data bus. To reduce power usage, noise, or some combination of the two, the data bus utilizes differential transmission using a three level signal in which a reference signal signifies no difference between input bits. Before the signals are transmitted an analysis is made to choose which one of a set of predetermined polarity reversal combinations is advantageous to encode the data bits. The data bits are so encoded and a formatting value F associated with the chosen polarity reversal is differentially transmitted with the encoded bits over the data bus. The three level differential signal is received at the far end of the bus, the encoded bits are recovered and decoded with use of F. The system and method achieves up to N bits transmitted per N data lines. | 2013-08-29 |
20130223560 | COMMUNICATION APPARATUS AND COMMUNICATION METHOD - A modulator generates a modulation signal from an input signal, and a serial-parallel converter generates a subcarrier modulation signal from the modulation signal. An IFFT unit performs an inverse fast Fourier transformation on the subcarrier modulation signal, and a decomposer decomposes a calculation result into a real part data and an imaginary part data. A calculator applies a predetermined calculation with respect to each element the value of which is equal to or greater than a positive threshold value and each element the value of which is equal to or less than a negative threshold value among the real part data and the imaginary part data. A synthesizer synthesizes the real part data and the imaginary part data to generate a baseband signal, and a transmitter generates a transmission signal from the baseband signal, and transmits it to another apparatus via an antenna. | 2013-08-29 |
20130223561 | LDPC coding systems for 60 GHz millimeter wave based physical layer extension - LDPC coding systems for 60 GHz millimeter wave based physical layer extension. LDPC (Low Density Parity Check) encoding in cooperation with sub-carrier interleaving, in the context of orthogonal frequency division multiplexing (OFDM), and appropriate symbol mapping is performed in accordance with transmit processing as may be performed within a communication device. In a receiving communication device, receive processing may be performed on a received signal based on the type of LDPC, sub-carrier interleaving, and symbol mapping thereof. The LDPC code employed in accordance with such LDPC encoding may have a partial-tree like structure. In addition, appropriate manipulation of the bits assigned to respective sub-carriers may be performed to ensure that the bits emplaced in the MSB (Most Significant Bit) location of various symbols has some desired diversity (e.g., from different codewords, from appropriately different locations within a given codeword, etc.). | 2013-08-29 |
20130223562 | ESTIMATING FREQUENCY-OFFSETS AND MULTI-ANTENNA CHANNELS IN MIMO OFDM SYSTEMS - Techniques are described for carrier frequency offset (CFO) and channel estimation of orthogonal frequency division multiplexing (OFDM) transmissions over multiple-input multiple-output (MIMO) frequency-selective fading channels. A wireless transmitter forms blocks of symbols by inserting training symbols within two or more blocks of information-bearing symbols. The transmitter applies a hopping code to each of the blocks of symbols to insert a null subcarrier at a different position within each of the blocks of symbols, and a modulator outputs a wireless signal in accordance with the blocks of symbols. A receiver receives the wireless signal and estimates the CFO, and outputs a stream of estimated symbols based on the estimated CFO. | 2013-08-29 |
20130223563 | OFDM System and Method Employing OFDM Symbols with Known or Information-Containing Prefixes - Systems and methods for transmitting and receiving OFDM symbols are provided which enable the otherwise wasted transmission time normally used as a prefix for each OFDM symbol to contain useful information. At the receiver, the received signal is processed to convert received OFDM symbols from a linear convolution with the channel to a cyclic convolution. | 2013-08-29 |
20130223564 | DIGITAL WIDEBAND CLOSED LOOP PHASE MODULATOR WITH MODULATION GAIN CALIBRATION - One embodiment of the present invention relates to a modulation system having a phase locked loop and an adaptive control. The phased lock loop is configured to receive an input signal and an adaptive signal. The input signal is an unmodulated signal, such as a phase component or phase signal. The phase locked loop is also configured to provide an error signal and an output signal. The error signal indicates one or more modulation errors. The output signal is a modulated version of the input signal that has been corrected using the adaptive signal to mitigate the one or more modulation errors. | 2013-08-29 |
20130223565 | Transmitter Linearized Using Look-Up Table With Unadaptable Data and Method Therefor - A transmitter ( | 2013-08-29 |
20130223566 | PHASE DETECTOR - Described are a method for generating a metric that is a function of a phase difference between a modulated carrier and a local carrier, and a phase detector for performing such a method. A baseband symbol is obtained from the modulated carrier, and the phase of the symbol is determined. Assuming that the modulation used to modulate the modulated carrier has a constellation diagram with M-fold rotational symmetry, the metric can be generated from the phase by evaluating a base function that includes a triangle wave having positively and negatively sloped linear segments whose slopes have identical absolute values and that is periodic with a period of 2π/M radians. Alternatively or additionally, if the ideal symbol phases are uniformly distributed, the metric can be generated by evaluating a version of the base function in which the ideal symbol phases correspond to identically valued metrics located on the triangle wave. | 2013-08-29 |
20130223567 | TRANSMISSION AND RECEPTION APPARATUS AND METHOD - A transmission apparatus includes a plurality of orthogonal frequency division multiplexing (OFDM) modulation signal generators, which generate a first OFDM modulation signal and a second OFDM modulation signal. The transmission apparatus also includes a transmitter that transmits the first OFDM modulation signal from a first antenna and the second OFDM modulation signal from a second antenna, in an identical frequency band. A reception apparatus is provided, which includes a plurality of antennas that receive a plurality of OFDM modulation signals; a plurality of OFDM demodulators that transform the plurality of OFDM modulation signals to a plurality of reception signals using Fourier transform; an estimator that outputs a distortion estimation signal using one or more symbols for demodulation included in the plurality of reception signals; and a demodulator that compensates for distortion of the reception signals using the distortion estimation signal and demodulates a data symbol included in the reception signals. | 2013-08-29 |
20130223568 | Receiving Arrangement of a Motor Vehicle - A receiving arrangement of a motor vehicle has a first antenna array disposed at or on the body of the motor vehicle, and having a second antenna array disposed on a window pane of the motor vehicle. The antenna arrays are coupled to a receiving unit for further processing, in particular, for the demodulation and/or decoding of a respective received signal of the antenna arrays. The receiving unit is directly connected with the first and the second antenna array. The receiving unit, during operation, causes a conversion of a respective received analog signal of the antenna arrays to a respective loss-free transportable digital signal, which the receiving unit provides to a control unit of the receiving unit for further processing. | 2013-08-29 |
20130223569 | WIRELESS RECEIVER - A direct-conversion type wireless receiver includes a pair of mixers for frequency-converting a radio signal received from an antenna into a base band signal by local signals having different phases; a first amplification circuit for amplifying the base band signal up to a demodulation level; a second amplification circuit provided between the mixer and the first amplification circuit; and a variable current circuit including a multi-stage current mirror to add a current 2n times as high as a reference current. The wireless receiver further includes a control unit configured to correct a DC offset of the mixer by allowing a current to flow into the second amplification circuit from the variable current circuit, based on an output of the first amplification circuit, and a capacitor connected between a gate and a source of a PchMOSFET which allows the reference current to flow therethrough. | 2013-08-29 |
20130223570 | APPARATUS FOR REMOVING DC COMPONENTS INHERENT IN A RADIO FREQUENCY CHAIN - Device for compensating a DC component inherent in any radio frequency chain in which from a single measurement, generally obtained from a digital stage, a set of multiple compensation values is determined by a compensation value vector generating module and which compensation values are applied to multiple compensation points of the analog chain. The compensation values are calculated by an iterative process converging toward cancellation of the DC component and avoid saturating amplification components and components of the analog-to-digital converter. The module includes compensation value calculation units each configured to calculate a respective compensation value and provide the calculated compensation value to the respective compensation point. | 2013-08-29 |
20130223571 | Mechanisms for the Correction of I/Q Impairments - Various embodiments of communication devices and associated methods for reducing I/Q impairments in signals used by the communication devices are described. A transmitter device | 2013-08-29 |
20130223572 | DIGITAL SIGNAL PROCESSOR WITH ADJUSTABLE DATA RATE AND METHODS THEREOF - As a digitized representation of an intermediate frequency television signal moves through a demodulator it undergoes a number of processes, including conversion from an analog signal to a digitized data, digital signal processing of the digitized data, and the like. The rate at which the digitized data moves through the digital signal processor of the demodulator for processing is referred to as the data rate of the DSP. The demodulator can vary the data rate based on a selected television channel, thereby reducing the level of interference at the demodulator resulting from noise. | 2013-08-29 |
20130223573 | MULTIPLE FREQUENCY BAND INFORMATION SIGNAL UNIVERSAL FRONT END WITH ADJUSTABLE ADC(S) - A wireless device includes processing circuitry, a receiver section, a transmitter section, and an antenna. The processing circuitry determines a set of information signals of a RF Multiple Frequency Bands Multiple Standards (MFBMS) signal. The receiver section down-converts a portion of the RF MFBMS signal by one or more respective shift frequencies to produce a corresponding baseband/low Intermediate Frequency (BB/IF) information signal from which the processing circuitry extracts data. The transmitter section converts a respective BB/IF information signal received from the processing circuitry by a respective shift frequency to produce a corresponding RF information signal and a combiner that combines the RF information signals to form a RF MFBMS signal. The receiver section and the transmitter section include ADCs and/or DACs, respectively, that are adjustable based upon characteristics of the RF MFBMS signal, the BB/IF MFBMS signal, and/or based upon signals carried therein, e.g., modulation type, SNR requirements, etc. | 2013-08-29 |
20130223574 | ITERATIVE DEMAPPER - Iterative demapper. Demodulation and/or demapping of a signal (e.g., based on a constellation whose points have a corresponding mapping with associated labels) is performed such that each dimension is processed separately without accounting for influences from the other dimension. For example, the demapping process operates on each respective dimension separately and independently. In some instances, the processing operates iteratively, in that, information identified from processing one of the dimensions is employed in directing the processing in another of the dimensions. Such operation may be performed iteratively by updating/modified information associated with one or more of the dimensions as well. Moreover, decoding may operate in accordance with iterative demapping (e.g., error correction code (ECC) and/or forward error correction (FEC) code by which information bits are encoded) to make estimates of bits within a signal sequence, and those estimates may be used in a subsequent iteration of demapping. | 2013-08-29 |
20130223575 | METHOD AND DEVICE FOR SENSING FREQUENCY FOR OFDM SYSTEMS - Provided is a frequency sensing method and apparatus in an orthogonal frequency division multiplexing (OFDM) system. Provided is a method of sensing a frequency of a received signal that is received from an outside in order to perform one of a plurality of radio communications. An OFDM apparatus may need to inspect a required frequency band before or after performing one of the plurality of radio communications, and to determine whether the frequency band is being used by another radio communication. | 2013-08-29 |
20130223576 | FREQUENCY OFFSET ESTIMATION APPARATUS AND METHOD OF OFDM SYSTEM - The present invention provides an apparatus and method for estimating a frequency offset which are robust against non-Gaussian noise. In a frequency offset estimation method of an Orthogonal Frequency Division Multiplexing (OFDM) system using a training symbol, the method includes receiving a reception signal, setting a specific initial frequency offset corresponding to the reception signal, and calculating a log-likelihood function based on a Complex Isotropic Symmetric α Stable (CISαS) probability density function obtained by modeling non-Gaussian noise included in the reception signal and estimating an optimum frequency offset based on the log-likelihood function and the initial frequency offset through a Maximum Likelihood Estimator (MLE). Accordingly, in a non-Gaussian noise environment, frequency offset estimated performance can be improved as compared with a conventional method in which noise is assumed to be a normal distribution. | 2013-08-29 |
20130223577 | METHOD, APPARATUS, AND SYSTEM FOR TIME SYNCHRONIZATION - A method, apparatus, and system for time synchronization are disclosed. The method comprising: obtaining a master sending time stamp, a slave receiving time stamp, a slave sending time stamp, and a master receiving time stamp; and adjusting the time of the slave clock according to the offset calculated from the time stamps to synchronize with the clock time of the master clock. With the present invention, in passband transmission systems that transmit signals continuously in units of symbols, the time synchronization is implemented between the master clock and the slave clock. | 2013-08-29 |
20130223578 | APPARATUSES AND METHODS FOR PRODUCTION OF RADIOISOTOPES IN NUCLEAR REACTOR INSTRUMENTATION TUBES - Example embodiments are directed to apparatuses and methods for producing radioisotopes in instrumentation tubes of operating commercial nuclear reactors. Irradiation targets may be inserted and removed from instrumentation tubes during operation and converted to radioisotopes otherwise unavailable from nuclear reactors. Example apparatuses may continuously insert, remove, and store irradiation targets to be converted to useable radioisotopes. | 2013-08-29 |
20130223579 | CONTROL ROD DRIVE MECHANISM ("CRDM") ASSEMBLY FOR A NUCLEAR REACTOR - The present invention relates to a control rod drive mechanism assembly for a nuclear reactor having a nuclear reactor vessel, a nuclear reactor core, a reactor vessel head, a latch housing nozzle, a latch housing, a rod travel housing, a latch assembly, a drive rod assembly and a rod control cluster assembly. The latch housing is integrated with the latch housing nozzle, the rod travel housing is welded to the latch housing, and the latch assembly is connected to the rod travel housing. The latch assembly includes the drive rod assembly and the rod control cluster assembly which is attached to the drive rod assembly. | 2013-08-29 |
20130223580 | CONTROL ROD DRIVE MECHANISM (CRDM) MOUNTING SYSTEM FOR PRESSURIZED WATER REACTORS - A standoff supporting a control rod drive mechanism (CRDM) in a nuclear reactor is connected to a distribution plate which provides electrical power and hydraulics. The standoff has connectors that require no action to effectuate the electrical connection to the distribution plate other than placement of the standoff onto the distribution plate. This facilitates replacement of the CRDM. In addition to the connectors, the standoff has alignment features to ensure the CRDM is connected in the correct orientation. After placement, the standoff may be secured to the distribution plate by bolts or other fasteners. The distribution plate may be a single plate that contains the electrical and hydraulic lines and also is strong enough to provide support to the CRDMs or may comprise a stack of two or more plates. | 2013-08-29 |
20130223581 | Nuclear Power Plant - When a power source is lost after an operation stop of a nuclear power plant, a first open/close valve is opened via a first battery at an early stage and steam in a reactor pressure vessel (RPV) is condensed in a suppression pool. The heat of the water in the suppression pool is transmitted to a cooling water pool located below inner space between first and second reactor containment vessels surrounding the RPV. A second open/close valve is opened via a second battery at the early stage and cooling water in a tank is injected into the RPV. After the early stage, a third open/close valve is opened via a third battery, and a cooling medium becomes steam by an evaporator in the RPV, the steam being condensed by a condenser disposed in the inner space to become a liquid of the cooling medium and is returned to the evaporator. | 2013-08-29 |
20130223582 | FABRICATION METHOD OF BURNABLE ABSORBER NUCLEAR FUEL PELLETS AND BURNABLE ABSORBER NUCLEAR FUEL PELLETS FABRICATED BY THE SAME - A fabrication method of burnable absorber nuclear fuel pellets and burnable absorber nuclear fuel pellets fabricated by the same are provided, in which the fabrication method includes adding boron compound and manganese compound to one or more type of nuclear fuel powders selected from the group consisting of uranium dioxide (UO | 2013-08-29 |
20130223583 | DIGITAL COUNTER AND METHOD FOR MEASURING A PERIOD OF TIME - A method for measuring a period of time between a first event and a second event via a hardware counter | 2013-08-29 |