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 |
| 8130883 | Pulse signal reception device, pulsed QPSK signal reception device, and pulse signal reception method A pulse signal reception device of a comparatively simple configuration detects a signal sampled at an optimal clock timing for a pulse modulation signal having a signal width shorter than a symbol frequency. In this device, a time division unit (103) samples... | 03/06/2012 |
| 8068571 | Featureless coherent chaotic amplitude modulation Systems (400, 500, 600) and methods (300) for generating a chaotic amplitude modulated signal absent of cyclostationary features by preserving a constant variance. The methods involve: generating a PAM signal including pulse amplitude modulation having... | 11/29/2011 |
| 7653165 | Pulse amplitude modulated system with reduced intersymbol interference A system and method for encoding and receiving data is provided. The data is encoded as a pulse amplitude modulated signal such that the amplitude signals do not transition from the highest signal level to the lowest signal level and do not transition from the lowes... | 01/26/2010 |
| 7436916 | Pulse modulator and PPM demodulation determining circuit employed in ultra wideband wireless communications The present invention provides a pulse modulator and a PPM demodulation determining circuit employed in Ultra Wideband (UWB) wireless communications. The pulse modulator comprises high frequency delayers which delay an input pulse, variable gainers each of which amp... | 10/14/2008 |
| 7436881 | Per-bin DFE for advanced OQAM-based multi-carrier wireless data transmission systems An Apparatus for non-linear per-bin adaptive equalization in orthogonal multi-carrier data transmission systems with the Nyquist sub-channel spectral shaping and T/2 staggering of in-phase and quadrature components is disclosed. A previously introduced linear equali... | 10/14/2008 |
| 7428282 | Timing recovery of PAM signals using baud rate interpolation A timing recovery method enables interpolation of PAM signals sampled at baud rate. The method exploits the structure of the PAM signal and also the smoothness of the channel pulse response. The resulting interpolator is an adaptive linear filter; and its taps can b... | 09/23/2008 |
| 7412209 | Shifted channel characteristics for mitigating co-channel interference Methods and apparatuses for minimizing co-channel interference in communications systems are disclosed. A method in accordance with the present invention comprises shifting a characteristic of the first signal with respect to a like characteristic of the second sign... | 08/12/2008 |
| 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 |
| 7391831 | Apparatus and method for mode transition of a transmit diversity scheme in a mobile communication system for using transmit diversity scheme in a mobile communication system for using transmit An apparatus and method for Transmit Diversity mode transition in a mobile communication system for use with transmit diversity is disclosed. In a mobile communication system including a Node B comprising one or more antennas and a Mobile Station (MS) for transmitti... | 06/24/2008 |
| 7391834 | Pulse amplitude modulated system with reduced intersymbol interference A system and method for encoding and receiving data is provided. The data is encoded as a pulse amplitude modulated signal such that the amplitude signals do not transition from the highest signal level to the lowest signal level and do not transition from the lowes... | 06/24/2008 |
| 7376357 | System and method of using variable pulses for symbology A method and system for storing and transmitting data using variable pulse symbology over a fiber optic or ultra wide band system. Data is stored in memory, accessed and transformed into an electronic or photonic pulse and/or space which has a variable duration, the... | 05/20/2008 |
| 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 |
| 7355532 | voltage level coding system and method We describe a voltage level coding system and method. The voltage level coding system includes a level encoder having an input to receive data segments coded using a first code and an output to supply second data codes indicating one of 2N plus at least o... | 04/08/2008 |
| 7356019 | Method and apparatus for converting optical signals to radio channels The invention relates to a conversion of a pulse modulated signal to a radio frequency signal enabling use of applications and protocols designed for wireless optical links on radio frequency channels. The method comprises receiving the pulse modulated input signal,... | 04/08/2008 |
| 7346119 | System and method for high speed digital signaling The present invention relates in general to a method, apparatus, and article of manufacture for providing high-speed digital communications through a communications channel. In one aspect, the present invention employs adaptive or adjustable equalization circuitry a... | 03/18/2008 |
| 7342875 | Space-time coded OFDM system for MMDS applications A communications system includes a base station that is configured to transmit a signal that is modulated according to a predetermined modulation scheme and an orthogonal frequency division multiplexing scheme, wherein the signal is encoded using space-frequency cod... | 03/11/2008 |
| 7336736 | Method of detecting and processing pulsed signals in a radio signal The invention allows the detection and processing in a radio signal received by a receiver, of any signal of “pulsed” type present in radio signals applied to the input of a radiofrequency receiver, the receiver having an analogue/digital converter for performin... | 02/26/2008 |
| 7327813 | Digital receiving device and radio communication system A digital receiving device includes a detecting means for detecting a specific code under a signal receiving state capable of successively receiving a desired signal, a setting means for setting a period for detecting the specific code as a non-communication state p... | 02/05/2008 |
| 7327184 | Low-power multi-level pulse amplitude modulation driver and semiconductor device having the driver A low-power multi-level pulse amplitude modulation (PAM) driver, and a semiconductor device having the same, in which the multi (M)-level PAM driver includes a load unit, first and second current sources, a pair of first input transistors, a pair of second input tra... | 02/05/2008 |
| 7308058 | Transparent multi-mode PAM interface Provided are a method and apparatus for high-speed, multi-mode PAM symbol transmission. A multi-mode PAM output driver drives one or more symbols, the number of levels used in the PAM modulation of the one or more symbols depending on the state of a PAM mode signal.... | 12/11/2007 |
| 7308044 | Technique for receiving differential multi-PAM signals A technique for receiving differential multi-PAM signals is disclosed. In one particular exemplary embodiment, the technique may be realized as a differential multi-PAM extractor circuit. In this particular exemplary embodiment, the differential multi-PAM extractor ... | 12/11/2007 |
| 7307472 | Digital demodulator with a low sampling frequency An amplitude demodulation method and device comprising a converter sampling an input signal having its sampling frequency corresponding to three times the modulation carrier frequency. ... | 12/11/2007 |
| 7301473 | Receiver for an acoustic telemetry system One embodiment includes a method comprising receiving an acoustic signal that is propagated along a drill string. The method also includes correlating the acoustic signal to a first stored acoustic signal representing a first symbol, wherein the first stored acousti... | 11/27/2007 |
| 7295638 | Communication device A direct sequence spread spectrum (DSSS) receiver (100) consistent with certain embodiments has a frequency generator (112) that generates a local oscillator signal without use of a piezoelectric crystal. A frequency converter (108) receives the... | 11/13/2007 |
| 7283595 | Ultra wide band pulse train generator An ultra wide band (UWB) pulse train generator, which includes a trigger signal controller for sequentially outputting n trigger signals for triggering generation of UWB pulse train in accordance with n bit data to be transmitted at a predetermined time period, a la... | 10/16/2007 |
| 7280607 | Ultra wide bandwidth communications method and system An ultra wide bandwidth, high speed, spread spectrum communications system uses short wavelets of electromagnetic energy to transmit information through objects such as walls or earth. The communication system uses baseband codes formed from time shifted and inverte... | 10/09/2007 |
| 7280522 | Method for preparing a profile in W-CDMA communication The method of this invention for preparing a profile in W-CDMA which, using a timer value and norm value, helps a mobile unit to synchronize its signals with those of a base station, comprising providing a profile data preparing portion which cumulatively adds a new... | 10/09/2007 |
| 7279950 | Method and system for high frequency clock signal gating A differential clock signal gating method and system is provided, wherein a clock buffer circuit control path develops a clock gating signal with a timing relationship to a clock signal. The clock gating signal gates a buffer on the clock buffer circuit controlled p... | 10/09/2007 |
| 7277480 | System and method of equalization of high speed signals In one aspect, the present invention is directed to a technique of, and system for enhancing the performance of high-speed digital communications through a communications channel, for example a backplane. In this aspect of the present invention, a transmitter includ... | 10/02/2007 |
| 7274266 | Radio frequency excitation arrangement A method is performed for influencing the signal shape of an output signal of an RF power resonance amplifier and an RF excitation arrangement including an RF power resonance amplifier. A basic signal of a basic frequency is amplified and modulated with a modulation... | 09/25/2007 |
| 7263130 | Method and apparatus for evaluating error control parameters of self-similar constellations A method and apparatus implementing the method, of selecting a bit load b for a channel in a carrier system. The carrier system encodes data based on a constellation of points. Each point represents a tuple of data. The constellation has a self-similarity property. ... | 08/28/2007 |
| 7260155 | Method and apparatus for encoding and decoding digital communications data In one aspect, the present invention is a system and technique that provides for the systematic development or implementation of codes that increase the robustness of systems employing, for example, PAM-n transmission techniques. The system and technique of this asp... | 08/21/2007 |
| 7233618 | Circuit configuration and method for transmitting digital signals To transmit digital signals, binary signals are transformed into a series of pulses, the pulses being modulated in their pulse length as a function of an information content of the binary signals. In a corresponding circuit configuration, a modulation unit is connec... | 06/19/2007 |
| 7233617 | System and method of equalization of high speed signals In one aspect, the present invention is directed to a technique of, and system for enhancing the performance of high-speed digital communications through a communications channel, for example a backplane. In this aspect of the present invention, a transmitter includ... | 06/19/2007 |
| H2190 | Sampled analog transmission Analog information is modulated onto a high repetition rate optical pulse stream. This modulated pulse stream is transmitted over optical medium, such as long distances of fiber, and is then detected. The pulses are removed leaving only the original analog signals. ... | 06/05/2007 |
| 7224298 | ADC background calibration timing A background calibrating, skip and fill, analog/digital converter (ADC) generates an output data sequence having successive data elements representing magnitudes of successive samples of an analog input signal (X) acquired during successive cycles of a clock signal.... | 05/29/2007 |
| 7224746 | Pre-compensation for digital bit streams A technique for pre-compensating a digital bit stream for distortion imposed by a transmission path includes adjusting the level of the digital bit stream on a bit-by-bit basis in a manner that simulates the effects of a filter having a transfer function that is sub... | 05/29/2007 |
| 7215086 | Electronic light generating element light bulb The present system for driving an electronic light generating element, includes: (i) input terminals, (ii) an input circuit coupled to the input terminals and operable to convert a sinusoidal signal to a signal independent of negative current attributes, (iii) a swi... | 05/08/2007 |
| 7194022 | Method and system having capacity-dependent baseband gain and coverage-capacity swapping in a multi-carrier base station transmitters The invention is a method and transmission system which transmits an analog composite signal, including carriers which are respectively modulated with different digital data signal. A transmission system in accordance with the invention includes a signal combiner ( | 03/20/2007 |
| 7184480 | Digital PWM generator A digital PWM circuit is provided. One exemplary circuit includes a binary counter, an n-bit DAC and a comparator. The binary counter generates a plurality of binary signals in increasing and/or decreasing value. The DAC circuit generates ramp signals composed of a ... | 02/27/2007 |
