Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 7672398 | Method and system for adjusting the amplitude and phase characteristics of real and imaginary signal components of complex signals processed by an analog radio transmitter A method and system for determining amplitude and phase compensation values used to adjust the amplitude and phase characteristics of real and imaginary signal components of complex signals processed by an analog radio transmitter. The compensation values may be det... | 03/02/2010 |
| 7653148 | System and method for delivery of video, content on demand and IP packets A method and apparatus for modulating an input signal comprised of an ordered series of samples separated by a substantially constant period T comprising the steps of providing a carrier signal, the carrier signal comprised of a series of samples separated by a subs... | 01/26/2010 |
| 7639756 | Apparatus and method for adjusting quadrature modulator, communication apparatus and program Disclosed are an apparatus and a method for the adjustment time for IQ offset of a quadrature modulator of a transmission circuit. In adjusting the I-offset and the Q-offset of a quadrature modulator, supplied with an I-signal and a Q-signal output from an analog ba... | 12/29/2009 |
| 7616702 | Transmission circuit and communication apparatus comprising the same A transmission circuit is provided which can quickly and accurately control an output power of a transmission signal even when the transmission signal is output at a high modulation rate and in a wide dynamic range. A switching control section controls a modulation ... | 11/10/2009 |
| 7596186 | Devices and methods of modulation and demodulation enabling the extension or replacement of a communications link, corresponding sender and receiver A modulation device comprises for each carrier frequency: means of discrimination between a signal coming from a first channel of a communications link and a signal coming from a second channel of said link, so as to obtain differentiated first and second signals; f... | 09/29/2009 |
| 7570711 | Quadrature LINC transmission method and apparatus A quadrature LINC transmission system processes a baseband input signal for transmission as a linearly amplified RF signal. An in-phase LINC element processes an in-phase baseband signal into an in-phase RF signal. A quadrature LINC element processes a quadrature ba... | 08/04/2009 |
| 7548591 | Quadrature modulator and calibration method A quadrature modulator and a method of calibrating same by applying a first test tone signal to an in-phase modulation branch input of the modulator and a ninety degree phase-shifted version of the first test tone signal to a quadrature modulation branch input of th... | 06/16/2009 |
| 7545882 | Transmission apparatus, reception apparatus and digital radio communication method A transmission apparatus includes a frame configuration determiner that determines a modulation scheme, from among a plurality of modulation schemes. A first symbol generator modulates a transmission signal according the modulation scheme determined by the frame con... | 06/09/2009 |
| 7539270 | Method and apparatus to interleave bits across symbols from different constellations An encoded input bit stream is interleaved across a number of symbols having different bit sizes in a manner that ensures that the bits assigned to each symbol from the bit stream are separated by a minimum separation. In this manner, bits that are adjacent within t... | 05/26/2009 |
| 7535975 | QAM mapping and bit labeling or bit-interleaved coded modulation Methods and systems using a Gray-like labeled QAM cross-constellation are disclosed. In some embodiments a Gray-like labeled QAM cross-constellation is used in wireless communication systems. ... | 05/19/2009 |
| 7505531 | Signal communications system and method for noisy links A system and method for communicating signals over a noisy channel is provided wherein an input signal may be sampled and modulated to make the signal more noise insensitive. In accordance with one embodiment, of the invention, an signal code modulation (SCM) scheme... | 03/17/2009 |
| 7499503 | Parallel concatenated code with soft-in soft-out interactive turbo decoder A method for parallel concatenated (Turbo) encoding and decoding. Turbo encoders receive a sequence of input data tuples and encode them. The input sequence may correspond to a sequence of an original data source, or to an already coded data sequence such as provide... | 03/03/2009 |
| 7492832 | Method and apparatus for digital vector QAM modulator Direct digital QAM modulation at an RF frequency is obtained from digitally synthesized RF signals which are generated for use as the two vectors. The two vectors are individually controlled in phase and summed to provide a combined phase and amplitude modulation th... | 02/17/2009 |
| 7492833 | Method for digital wireless communications In a multivalue modulation type with one pilot symbol inserted for every 3 or more symbols, signal points of each one symbol immediately before and after a pilot symbol are modulated using a modulation type different from that for pilot symbols. In this way, it is p... | 02/17/2009 |
| 7471740 | ARQ retransmission with reordering scheme employing multiple redundancy versions and receiver/transmitter therefor An ARQ retransmission method in a communication system, wherein data packets comprising modulation symbols are retransmitted based on an automatic repeat request and subsequently combined with previously received data packets, the symbols of said data packets being ... | 12/30/2008 |
| 7471741 | Method, apparatus and system for high-speed transmission on fiber optic channel Multi-carrier modulation fiber optic systems constructed using a series of electrical carriers, modulating the data on the electrical carriers and combining the carriers to form a wideband signal. The wideband signal can then be intensity modulated on a laser and co... | 12/30/2008 |
| 7460614 | Method and system for adjusting the amplitude and phase characteristics of real and imaginary signal components of complex signals processed by an analog radio transmitter A method and system for determining amplitude and phase compensation values used to adjust the amplitude and phase characteristics of real and imaginary signal components of complex signals processed by an analog radio transmitter. The compensation values may be det... | 12/02/2008 |
| 7450660 | Apparatus and method for digital modulation A first interpolation section 14 and a second interpolation section 24 perform sampling on input data Id4 and Qd4 having a sampling frequency fover so that resulting data will have a sampling frequency fsamp, which is equal to an operatin... | 11/11/2008 |
| 7443924 | Residual carrier and side band processing system and method In a communication device, the LO leakage and opposite side band signals are measured at an output signal. Input processing signals to a modulator are adjusted in response to the measured values to minimize the LO leakage and maximize side band suppression. ... | 10/28/2008 |
| 7426246 | Dual layer signal processing in a layered modulation digital signal system Systems and methods for receiving layered modulation for digital signals are presented. An exemplary apparatus comprises a tuner for receiving a layered signal and producing a layered in-phase signal and a layered quadrature signal therefrom, an analog-to-digital co... | 09/16/2008 |
| 7424662 | Method and system for providing low density parity check (LDPC) encoding An approach is provided for a method of encoding structure Low Density Parity Check (LDPC) codes. Memory storing information representing a structured parity check Matrix of Low Density Parity Check (LDPC) codes is accessed during the encoding process. The informati... | 09/09/2008 |
| 7421260 | Method and system for a second order input intercept point (IIP2) correction In RF transceivers, a method and system for a second order input intercept point (IIP2) correction are provided. A DC offset sensor may detect DC offset voltages produced by blocker signals in “I” and “Q” signal component paths in an RF receiver. The ... | 09/02/2008 |
| 7421037 | Reconfigurable transmitter with direct digital to RF modulator A radio frequency (RF) transmitter uses two digital-to-RF conversion modules to convert digital baseband signals into RF signals. In cartesian mode, baseband signals are conveyed to the conversion modules for RF conversion. In polar mode, baseband signals are conver... | 09/02/2008 |
| 7412008 | Programmable phase mapping and phase rotation modulator and method A modulator (10) and method provides a programmable phase rotation for supporting different modulation formats and different phase rotations. The modulator (10) includes a programmable symbol counter (32) and symbol phase rotation logic (31 | 08/12/2008 |
| 7403571 | Method for eliminating reception interference signal of space-time block coded orthogonal frequency division-multiplexing system in high-speed mobile channel Disclosed herein is a method for eliminating the reception interference signal of a Space-Time Block Coded Orthogonal Frequency-Division Multiplexing (STBC-OFDM) system in a high-speed mobile channel. The method includes the following steps. At the first step, the g... | 07/22/2008 |
| 7394865 | Signal constellations for multi-carrier systems A signal constellation for wireline or wireless multi-carrier communication systems, such as systems using OFDM or MC-CDMA, has points separated from one another by maximizing a distance between conditional probability distributions, such as a Kullbeck-Leibler (KL) ... | 07/01/2008 |
| 7391819 | Capacity bound and modulation for communications A new bound on communications capacity, a modulation QLM to derive this bound, and QLM to support communications with performance close to this bound. The QLM modulation and demodulation algorithms offer a method for communications links to support a substantially h... | 06/24/2008 |
| RE40385 | Orthogonal complex spreading method for multichannel and apparatus thereof An orthogonal complex spreading method for a multichannel and an apparatus thereof are disclosed. The method includes the steps of complex-summing αn1WM,n1Xn1 which is obtained by multiplying an orthogonal Hadamard sequence WM,... | 06/17/2008 |
| 7386072 | Orthogonal frequency division multiplexing (OFDM) system with channel transfer function prediction Wireless communication systems are provided with an adaptive subcarrier loading function for a mobile receiver in a wireless communication system based on Orthogonal Frequency Division Multiplexing (OFDM) that can advantageously be applied to predict the channel tra... | 06/10/2008 |
| 7379509 | Digital intermediate frequency QAM modulator using parallel processing The digital Intermediate Frequency (IF) modulator applies to various modulation types and offers a simple and low cost method to implement a high-speed digital IF modulator using field programmable gate arrays (FPGAs). The architecture eliminates multipliers and seq... | 05/27/2008 |
| 7369820 | System and method for DC offset correction in transmit baseband A radio frequency (RF) transceiver is provided. The RF transceiver comprises a transmit path comprising an output coupled to an RF antenna, a feedback path comprising an input coupled to the output of the transmit path, and a DC offset calibration module comprising ... | 05/06/2008 |
| 7369598 | Ultra-wideband receiver and transmitter A waveform-adaptive ultra-wideband (UWB) transmitter and noise-tracking UWB receiver for use in communications, object detection and radar applications. In one embodiment, the output of an oscillator is gated by a low-level impulse generator either directly or throu... | 05/06/2008 |
| 7369624 | Carrier suppression type modulator with encoded modulating signals A carrier suppressed information signal modulation arrangement employs a plurality of serially coupled modulators. Each of the serially coupled modulators has a carrier input, a modulating signal input and a modulated carrier output. A carrier is applied to the carr... | 05/06/2008 |
| 7366477 | Redundancy version implementation for an uplink enhanced dedicated channel This invention describes a method for a redundancy version implementation of an uplink (UL) enhanced dedicated channel (E-DCH) in mobile communication systems by calculating a redundancy version number (RVN) as a function of a connection frame number (CFN), a maximu... | 04/29/2008 |
| 7366482 | Transmission device, transmission output control method, and radio communications device Either linear operating mode or saturation operating mode is set as the operating mode of a high-frequency power amplifier on the basis of an operating mode set signal. The gain of a variable gain amplifier provided in front of the high-frequency power amplifier and... | 04/29/2008 |
| RE40254 | Method and system for realising a fast control channel in a cellular radio network Signalling information is conveyed from a transmitting device (101) to a receiving device (102) in a cellular radio network where user data transmission takes place on a traffic channel in discrete transmission bursts (111-120; 211-220... | 04/22/2008 |
| RE40256 | Communication system At the transmitter side, carrier waves are modulated according to an input signal for producing relevant signal points in a signal space diagram. The input signal is divided into, two, first and second, data streams. The signal points are divided into signal point g... | 04/22/2008 |
| RE40255 | Communication system At the transmitter side, carrier waves are modulated according to an input signal for producing relevant signal points in a signal space diagram. The input signal is divided into, two, first and second, data streams. The signal points are divided into signal point g... | 04/22/2008 |
| 7362819 | Device and method for reducing peaks of a composite signal A method of limiting at least one peak of a composite signal having multiple carriers signals involves placing energy in at least one bandwidth gap located between respective frequency bandwidths of carrier signals. ... | 04/22/2008 |
| 7363007 | Adaptive modulation/demodulation method and radio communications systems Adaptive modulation/demodulation method in a radio communication system is provided. A modulation multi-level number in a transmission device and a demodulation multi-level number in a reception device are judged independently from each other according to a propagat... | 04/22/2008 |