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| Number | Title | Issue Date |
| 8139652 | Method and apparatus for decoding transmission signals in a wireless communication system Disclosed is a method and an apparatus for decoding transmission signal. The method includes the steps of: receiving transmission signal including repeated symbols; deinterleaving the received signal; mutually combining the repeated symbols in the deinterleaved sign... | 03/20/2012 |
| 8121201 | Pulse transmitter, pulse receiver, pulse transmitting method, and pulse demodulating method A pulse transmitter having a relatively simple structure and generating a pulse modulating signal even at a high transmission rate. In the pulse transmitter, a symbol pulse generating part (103) generates a symbol pulse of amplitude level β when data S1 | 02/21/2012 |
| 8121200 | Multi-level LVDS data transmission with embedded word clock A multi-level signal uses the third/fourth signal level to signal both a word clock edge and a data word boundary. At the receiver, a level detector detects a transition to or from the third/fourth level as a clock signal transition and the word boundary. The bit cl... | 02/21/2012 |
| 8116385 | Method for the transmission of a data word A method for transmitting a data word, according to which a codeword supply (CV) is provided, the number of individual codewords (C1 . . . C31) of the supply corresponding at least to the number of data positions (#1 . . . #31) of the data word (DW), t... | 02/14/2012 |
| 8102923 | Hierarchical coding for multicast messages Techniques for sending signaling information using hierarchical coding are described. With hierarchical coding, individual messages for users are encoded using multiple interconnected encoders such that (1) the message for each user is sent at a data rate suitable f... | 01/24/2012 |
| 7970062 | Method for distributing high and low-bandwidth voice channels using a minimum number of timeslots A method and apparatus for distributing high-bandwidth and low-bandwidth voice channels is presented. An input signal is received and separated into a first low-band signal and a first high-band signal. The first low-band signal is compressed to provide a low-bandwi... | 06/28/2011 |
| 7965779 | Low power, wavelet-based spike detector A multi-scale spike detector for performing multi-resolution spike detections of a signal is provided. The spike detector includes a gamma filter having cascaded low-pass filters. The cascaded filters collectively provide different cutoff frequencies, each of the fi... | 06/21/2011 |
| 7876836 | Precision timing pulse width communications Systems and methods are described for pulse communications using precision timing. A method includes digitally pulse coding a data stream; and modulating a carrier signal using the digitally pulse coded data stream. ... | 01/25/2011 |
| 7869524 | Pulse generator for ultra-wide-band modulating systems and modulating systems using it A pulse generator circuit is provided. The pulse generator circuit has an input adapted to receive an input electrical quantity and an output at which an output electrical quantity is made available. A transfer characteristic establishes a relationship between said ... | 01/11/2011 |
| 7864868 | Method for detecting an octet slip An efficient method and system for detecting frame slip in an inband signalling block in pulse code modulation. The effect of frame slip on the inband signalling block is that the bits following the frame slip are transferred from the signalling block into an adjace... | 01/04/2011 |
| 7864869 | Satellite communication system utilizing low density parity check codes An approach for reliably communicating over a satellite in support of a communication service including, for example, as direct broadcast satellite and data service, is disclosed. An input message is encoded, yielding a structured Low Density Parity Check (LDPC) cod... | 01/04/2011 |
| 7860172 | Self clock generation structure for low power local clock buffering decoder A k-to-2k decoder is provided. Within the final stage of a k-to-2k decoder is a plurality of word line drivers. These word line drivers utilize clocking signals to fire word lines to a memory array. However, power consumption by clocks has beco... | 12/28/2010 |
| 7852949 | Spectral distance optimizing multi-band transmission A communication system is provided which implements a method for up-converting a baseband signal to a given number of frequency bands that together define a signal transmission channel. A sequential order is defined in which the frequency bands are to be used for up... | 12/14/2010 |
| 7796694 | Circuit and method or encoding DSSS signals Disclosed is a circuit for encoding code phase modulated (CPM) signals, including a code storage device storing one or more PN codes, a counter, and a multiplexer coupled to the code storage device and the counter, the multiplexer to provide an encoded CPM sequence ... | 09/14/2010 |
| 7751485 | Signal processing using pilot based coding Data coding and entropy coding are performed with interconnection, and grouping is used to enhance coding efficiency. The present invention includes the steps of obtaining a group reference value corresponding to a plurality of data included in one group through fir... | 07/06/2010 |
| 7746935 | Digital amplifier system for driving a capacitive load A digital amplifier system for driving a capacitive load includes a digital amplifier controller responsive to a digital input command for producing a pulse density modulation signal representative of the digital input command; a switching amplifier for amplifying t... | 06/29/2010 |
| 7746936 | Method and device for optimizing codebook for quantized precoder by using steepest descent algorithm In a method for optimizing a codebook including a quantized channel between a base station transmitter and a portable terminal: a) select the codebook to be optimized; b) a steepest descent algorithm is applied to respective codewords of the codebook selected in a),... | 06/29/2010 |
| 7738565 | Peak detector A peak detector provides repeatable and accurate measurements of the signal amplitude for variable frequencies of input signals. The peak detector includes a pulse edge generator circuit that generates a pulse edge signal in response to the signal peaks of an input ... | 06/15/2010 |
| 7684496 | Methods and systems for digital data transmission Methods and systems for transmitting a discrete information over a communication path comprising analogue communication lines and a pulse-code modulation (PCM) channel are considered, which methods and systems allow to increase the data transfer rate over the entire... | 03/23/2010 |
| 7684497 | Method and apparatus for generating M-ary CPM waveforms from a superposition of PAM waveforms To reflect advantages of a constant phase modulation waveform, the invention provides a pulse amplitude modulated PAM waveform that is a superposition of Q0≦2L−1 PAM component pulses in each symbol interval such that a significant portion o... | 03/23/2010 |
| 7684498 | Signal processing using pilot based coding Data coding and entropy coding are performed with interconnection, and grouping is used to enhance coding efficiency. The present invention includes the steps of obtaining a group reference value corresponding to a plurality of data included in one group and a diffe... | 03/23/2010 |
| 7680194 | Method and apparatus for signal processing, encoding, and decoding Apparatus and methods for processing a signal are disclosed. Data coding and entropy coding are performed with interconnection, and grouping is used to enhance coding efficiency. The subject matter includes a payload part having at least one of data coding informati... | 03/16/2010 |
| 7675977 | Method and apparatus for processing audio signal Apparatus and methods for processing a signal are disclosed. Data coding and entropy coding are performed with interconnection, and grouping is used to enhance coding efficiency. A data structure for processing a signal includes a payload part having at least one of... | 03/09/2010 |
| 7672379 | Audio signal processing, encoding, and decoding Apparatus and methods for processing signals are disclosed. A data structure for processing a signal includes a payload part having at least one of data coding information including pilot coding information per a frame and entropy coding information. The data struct... | 03/02/2010 |
| 7660358 | Signal processing using pilot based coding Data coding and entropy coding are performed with interconnection, and grouping is used to enhance coding efficiency. The present invention includes the steps of obtaining a number of data corresponding to a pilot reference value and if a number of data bands meets ... | 02/09/2010 |
| 7656954 | Single-ended tri-level encoding/decoding Embodiments for single-ended tri-level encoding and/or decoding of data are disclosed. ... | 02/02/2010 |
| 7643562 | Signal processing using pilot based coding Data coding and entropy coding are performed with interconnection, and grouping is used to enhance coding efficiency. The present invention includes the steps of obtaining mode information and obtaining a pilot reference value corresponding to a plurality of data an... | 01/05/2010 |
| 7643561 | Signal processing using pilot based coding Data coding and entropy coding are performed with interconnection, and grouping is used to enhance coding efficiency. The present invention includes the steps of obtaining a pilot reference value corresponding to a plurality of gains and a pilot difference value cor... | 01/05/2010 |
| 7609770 | Circuit structure and signal encoding method for a serial ATA external physical layer A circuit structure and signal encoding method for a serial ATA external physical layer is provided. The circuit structure and signal encoding method thereof is capable of reducing the number of interface signals of a serial ATA external physical layer, essentially ... | 10/27/2009 |
| 7593468 | Method of interfacing a high speed signal In a method of interfacing a high-speed signal, a series of digital signals are received from a transmitter in response to a clock signal. The received digital signal is coded based on a K-L level pulse amplitude modulation system in response to the clock signal, wh... | 09/22/2009 |
| 7561624 | Multi-interval line coding for high speed data communication Binary data signal multi-line interval encoding and decoding arrangements supporting high speed data communications consistent with certain embodiments produce a signal having a plurality of pulses with a minimum pulse duration of T. The pulses are arranged in a sig... | 07/14/2009 |
| 7471727 | Integrated serial data decoder The present invention provides a serial data decoder without capacitor that can be made in the form of an integrated circuit without any additional external device. The integrated serial data decoder comprises a clock generator, a frame detector and a channel decode... | 12/30/2008 |
| 7418007 | Method and apparatus for determining a transmission bit rate in a statistical multiplexer A statistical multiplexer for coding and multiplexing multiple channels of digital television data, or multiple panels of HDTV digital television data. A bit rate need parameter is determined for each encoder in a stat mux group, and an encoding bit rate is allocate... | 08/26/2008 |
| 7412004 | Method and apparatus for controlling buffer overflow in a communication system A method and apparatus are disclosed for controlling a buffer in a digital audio broadcasting (DAB) communication system. An audio encoder marks a frame as “dropped” whenever a buffer overflow might occur. Only a small number of bits are utilized to process a lo... | 08/12/2008 |
| 7403746 | Adaptive frame durations for time-hopped impulse radio systems A method determines a duration of a frame in an impulse radio system for radio ranging. Channel state information of a channel between two transceivers is estimated periodically. A signal to noise and interference ratio is also estimated periodically. The frame dura... | 07/22/2008 |
| 7394875 | Beaulieu series approach to optimal UMTS RACH preamble detection estimation A method for preamble detection in mobile unit to base unit wireless telephony sets a preamble detection threshold based upon a Beaulieu series computation dependent upon preamble correlation data. This preamble detection threshold adjusts for noise by assuming the ... | 07/01/2008 |
| 7391813 | Digital wireless communications device A digital wireless communications device enabling call distance to be increased while avoiding mute processing as far as possible, even if code error occurs in an ADPCM code. The digital wireless communications device may be configured to include: an error detector ... | 06/24/2008 |
| 7382850 | Multichannel cochlear implant with neural response telemetry A circuit and method for cochlear implant telemetry where digital data is encoded into an RF signal. The RF signal is applied via a rectifier diode to a first switch matrix S1 and a second switch matrix S2, with S1 being coupled to a first sampl... | 06/03/2008 |
| 7379502 | Method of converting digital data Disclosed is a method of digital data conversion. The method includes binding input digital data into unit blocks constituted by a plurality of bytes, modulation-coding each byte of the input data blocks by using a code conversion table, and allocating a merging bit... | 05/27/2008 |
| 7375602 | Methods for propagating a non sinusoidal signal without distortion in dispersive lossy media Systems and methods are described for transmitting a waveform having a controllable attenuation and propagation velocity. An exemplary method comprises: generating an exponential waveform, the exponential waveform (a) being characterized by the equation Vin | 05/20/2008 |
