Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Application No. | Application Title | Issue Date |
| 20120128099 | Method and Frequency Agile Pre-distorted Transmitter Using Programmable Digital Up and Down Conversion Pre-distorted transmitters operable over a wide range of frequencies including a plurality of predetermined frequency bands are provided. The transmitters include a programmable digital up-converter and a programmable digital down-converter, an ADC, a DAC, a power ampli... | 05/24/2012 |
| 20120106676 | Transmitter Linearized In Response To Signal Magnitude Derivative Parameter and Method Therefor A transmitter (50) includes a low power nonlinear predistorter (58) that inserts predistortion configured to compensate for a memoryless nonlinearity (146) corresponding to gain droop and another memoryless nonlinearity (148) corresponding to... | 05/03/2012 |
| 20120044976 | MULTI-CARRIER RECEIVER, MULTI-CARRIER TRANSMITTER AND MULTI-CARRIER TRANSCEIVER SYSTEM A multi-carrier receiver, multi-carrier transmitter and a multi-carrier transceiver system are provided. The multi-carrier receiver includes a first processing unit, a router and a second processing unit. The first processing unit has M first processing paths, applies i... | 02/23/2012 |
| 20120027125 | CODEBOOK, CODEBOOK CREATING METHOD, UPLINK TRANSMISSION METHOD AND EQUIPMENT BASED ON THE CODEBOOK A codebook, a codebook creating method, and an uplink transmission method and equipment based on the codebook are provided. A new codebook is put forward in the method. The codebook includes one or any combination of the following elements: | 02/02/2012 |
| 20120008717 | CONVERSION SYSTEM The invention relates to frequency conversion systems, in particular for use as up-converters or down-converters in radiofrequency (RF) receivers or transmitters, exemplary embodiments including a radiofrequency receiver (1000) comprising: an RF signal input (... | 01/12/2012 |
| 20120002752 | PREDISTORTION OF COMPLEX MODULATED WAVEFORM Exemplary embodiments of the invention include a transmitter system configured to predistort an input signal to generate a target output signal. An exemplary transmitter system includes a forward path including a predistortion device coupled with an amplifier, the forwa... | 01/05/2012 |
| 20110310990 | POWER AMPLIFICATION APPARATUS, OFDM MODULATION APPARATUS, WIRELESS TRANSMISSION APPARATUS, AND DISTORTION REDUCTION METHOD FOR POWER AMPLIFICATION APPARATUS A power amplification apparatus that performs an inverse fast Fourier transformation on data allocated to a plurality of sub-carriers, converts time-domain data output in parallel from the inverse fast Fourier transformation into a time-domain analog signal, performs a ... | 12/22/2011 |
| 20110280338 | TRANSMISSION APPARATUS AND METHOD OF CONTROLLING THE SAME A transmission apparatus according to the present invention includes: a baseband signal generator; a local oscillator; a modulator that generates a modulation signal by multiplying a baseband signal by a carrier wave signal including a local oscillation frequency; a pow... | 11/17/2011 |
| 20110274210 | TIME ALIGNMENT ALGORITHM FOR TRANSMITTERS WITH EER/ET AMPLIFIERS AND OTHERS An apparatus and method for aligning input and feedback signals in a transmission circuit are provided. The method includes capturing an input signal and a feedback signal, determining a first time delay between the input signal and the feedback signal, determining a se... | 11/10/2011 |
| 20110261903 | WIRELESS COMMUNICATION UNIT, INTEGRATED CIRCUIT AND METHOD OF POWER CONTROL OF A POWER AMPLIFIER THEREFOR A wireless communication unit comprises a transmitter having a forward path comprising a power amplifier, PA, and a feedback path operably coupled to the power amplifier, wherein the feedback path comprises a coupler arranged to feed back a portion of a signal to be tra... | 10/27/2011 |
| 20110255636 | DISTORTION COMPENSATION CIRCUIT, TRANSMITTING APPARATUS AND DISTORTION COMPENSATING METHOD A distortion compensation circuit for compensating for the distortion characteristics of an amplifier, includes a distortion compensating coefficient calculating element and a distortion compensating operation element. The distortion compensating coefficient calculating... | 10/20/2011 |
| 20110222630 | COMMUNICATION DEVICE AND POWER CORRECTION METHOD A communication device that compensates a distortion of a transmission signal, amplifies the compensated transmission signal by an amplifier, and outputs the signal. The device includes a storage unit that stores a transmission characteristic of a transmission power of ... | 09/15/2011 |
| 20110216851 | ROBUST TRANSMIT/FEEDBACK ALIGNMENT Performing digital predistortion (DPD) for widely spaced narrowband signals, such as the signal used in multi-carrier GSM, can be very difficult. Here, a system is provided the performs DPD for widely spaced narrowband signals. In particular, this system uses a polynomi... | 09/08/2011 |
| 20110200142 | Up-Converted and Amplified Transmission Signal Using Log-Antilog According to one exemplary embodiment, a method for producing an up-converted and amplified transmission signal comprises performing a logarithmic transformation of an input transmission signal to form a logarithmically transformed transmission signal, adding the logari... | 08/18/2011 |
| 20110136536 | METHOD AND APPARATUS FOR DISTRIBUTED PROCESSING FOR WIRELESS SENSORS Certain aspects of the present disclosure relate to a method for compressed sensing (CS). The CS is a signal processing concept wherein significantly fewer sensor measurements than that suggested by Shannon/Nyquist sampling theorem can be used to recover signals with ar... | 06/09/2011 |
| 20110103512 | METHOD AND SYSTEM FOR MINIMIZING POWER CONSUMPTION IN A COMMUNICATION SYSTEM A method for processing signals in a communication system includes delaying a baseband signal based on at least one calibration signal, and amplifying the delayed baseband signal. The at least one calibration signal may be generated based on an amount of intermodulation... | 05/05/2011 |
| 20110085619 | SYSTEM AND METHOD FOR SYNCHRONIZATION, POWER CONTROL, CALIBRATION, AND MODULATION IN COMMUNICATION TRANSMITTERS A system is provided for processing a communication signal including a baseband amplitude component and a baseband phase component. The system includes an amplitude predictor configured for closed-loop pre-distortion of a baseband amplitude component, an amplitude looku... | 04/14/2011 |
| 20110026634 | WIRELESS TRANSMITTER AND RELATED MULTIMEDIA SYSTEM A wireless transmitter includes a first filtering unit coupled to a first cable for outputting a first DC source transmitted on the first cable, a first power converting unit for converting the first DC source into a second DC source, a second filtering unit for elimina... | 02/03/2011 |
| 20110019760 | Methods and Systems for Reducing Supply and Termination Noise A transmitter expresses continuous-time signals on alternate, parallel channels with reference to different supply voltages such that the signals on alternate channels have different common-mode voltages. At the transmitter, expressing the symbols using alternate supply... | 01/27/2011 |
| 20110007841 | RF TRANSMITTER AND METHOD OF OPERATION A linear RF transmitter (100) includes a forward path including a baseband signal combiner (109) and an RF (radio frequency) power amplifier (123), and a linearizing control loop from an output (127) of the RF power amplifier to an input of t... | 01/13/2011 |
| 20100322346 | TRANSMITTER ARCHITECTURES Techniques for generating a transmit (TX) signal with improved characteristics in the presence of interference such as noise and distortion. In one aspect, the TX output signal is used to generate a reconstructed signal having the characteristics of the interference, an... | 12/23/2010 |
| 20100303170 | METHOD AND APPARATUS FOR PRE-PROCESSING DATA TO BE TRANSMITTED IN MULTIPLE-INPUT COMMUNICATION SYSTEM A method for pre-processing data to be transmitted in a multiple-input communication system comprises the following steps: generating a beamforming matrix and a pre-coding matrix; combining the beamforming matrix and the pre-coding matrix to generate a weight matrix; an... | 12/02/2010 |
| 20100272214 | RADIOFREQUENCY TRANSMISSION SYSTEM The invention relates to a radiofrequency transmission system comprising: means of producing a complex digital signal quantised on N bits; means of transforming the complex digital signal into two complex digital signals with an identical and constant envelope that are ... | 10/28/2010 |
| 20100239048 | METHOD AND APPARATUS FOR IMPROVING THROUGHPUT AND ERROR PERFORMANCE OF RATELESS CODING SYSTEMS A method and system are described for adaptively adjusting data communication of a rateless coding system, including adaptively estimating a symbol coding length, determining a symbol threshold, determining if the adaptively estimated symbol coding length is less than t... | 09/23/2010 |
| 20100215120 | Low-Power Polar Transmitter Apparatus and methods for providing transmit signals in polar transmitters are described. A modulation signal may be provided from a VCO to low noise and low power signal paths and selectively combined based on a desired output power level. CMOS and CML divider circuits... | 08/26/2010 |
| 20100191117 | Method and Device for Controlling Transmission Power of an Active Transducer A method of operating an ultrasound signal generator includes generating a stimulus signal and receiving a returned signal. The Signal to Noise Ratio (SNR) of the returned signal is computed. The SNR is compared to an optimal SNR range. A control signal is generated to ... | 07/29/2010 |
| 20100177902 | Audio transmission system An audio transmission system of an FM carrier frequency signal conveys an analog audio signal with minimum distortion, high signal to noise ratio, and minimum phase distortion. The system employs digital data processing blocks to generate a VHF FM carrier signal which i... | 07/15/2010 |
| 20100177848 | TRANSMITTER WITH REDUCED SPECTRAL REGROWTH AND ASSOCIATED METHODS A transmitter includes a monitoring circuit for monitoring phase transitions of in-phase and quadrature components of an input phase modulated signal. A filter is downstream from the monitoring circuit for generating a filtered phase modulated signal within an allocated... | 07/15/2010 |
| 20100158155 | SYSTEM AND METHOD FOR TRAINING PRE-INVERSE OF NONLINEAR SYSTEM A circuit for use with an amplification circuit having a predistortion datapath portion, a power amplifier portion and a gain portion. The predistortion datapath portion can output a predistorted signal based on the input signal. The power amplifier portion can output a... | 06/24/2010 |
| 20100141340 | METHOD AND APPARATUS FOR A HIGH BANDWIDTH AMPLIFIER WITH WIDE BAND PEAKING A two stage fully differential amplifier has been designed which works, in tandem with a TX-FIR, as a linear equalizer at low frequencies, not covered by the TX-FIR, and also acts as a linear amplifier at higher frequencies which are equalized by the TX-FIR. The amplifi... | 06/10/2010 |
| 20100135368 | UPSAMPLING/INTERPOLATION AND TIME ALIGNMENT MECHANISM UTILIZING INJECTION OF HIGH FREQUENCY NOISE A novel and useful apparatus for and method of upsampling/interpolating a discrete-time input sample stream with time alignment utilizing the addition of randomized high frequency noise. The upsampling mechanism is an effective implementation of a second order interpola... | 06/03/2010 |
| 20100119008 | PROGRAMMABLE WIDE BAND DIGITAL RECEIVER/TRANSMITTER A receiver uses a wideband intermediate frequency (IF) in the analog domain and performs low IF down-conversion in the digital domain, using low-power, high-speed, high resolution analog-to-digital converters. The receiver can be integrated into an integrated circuit as... | 05/13/2010 |
| 20100120384 | METHODS AND APPARATUS FOR DYNAMICALLY COMPENSATING FOR DC OFFSET DRIFT AND OTHER PVT-RELATED SIGNAL VARIATIONS IN POLAR TRANSMITTERS Methods and apparatus for dynamically compensating for signal variations in communications transmitters employing switch-mode PAs. An exemplary method includes first identifying a predetermined signal characteristic in an input signal applied to an input of a switch-mod... | 05/13/2010 |
| 20100097923 | Peak-to-Average Reduction of SC-FDMA Signals with Frequency Mask A wireless transmitter exhibits improved power de-rating reduction, which improves the power efficiency of non-constant envelop communication systems by mapping N first samples of a first discrete Fourier transform (DFT) of a group of coded symbols to M sub-carriers acc... | 04/22/2010 |
| 20100034315 | REVERSE LINK POWER CONTROL FOR AN OFDMA SYSTEM Techniques for performing power control of multiple channels sent using multiple radio technologies are described. The transmit power of a reference channel, sent using a first radio technology (e.g., CDMA), is adjusted to achieve a target level of performance (e.g., a ... | 02/11/2010 |
| 20100020900 | DIGITAL PRE-DISTORTION TECHNIQUE USING NONLINEAR FILTERS A method and computer program product for operating a linearizer for a circuit, including generating a set of coefficients via a characterizer; predistorting a signal input to the circuit responsive to the coefficients and generating a linearized output in response ther... | 01/28/2010 |
| 20100020899 | METHOD AND APPARATUS FOR IMPROVING DIGITAL PREDISTORTION CORRECTION WITH AMPLIFIER DEVICE BIASING A method, apparatus, and electronic device for using digital predistortion are disclosed. A transmitter 212 may transmits a transmission signal. A receiver 214 may monitor the transmission signal to execute digital predistortion of the transmission signal ... | 01/28/2010 |
| 20100014609 | DISTORTION CORRECTION CONTROL APPARATUS AND DISTORTION CORRECTION CONTROL METHOD A distortion correction control apparatus is for compensating for a burst distortion in a transmission amplifier caused by a burst of an input signal of a transmission target. The apparatus includes a holding unit that stores a distortion correction coefficient having r... | 01/21/2010 |
| 20100002758 | ADJUSTABLE TRANSMITTER POWER FOR HIGH SPEED LINKS WITH CONSTANT BIT ERROR RATE A method and apparatus for dynamically adjusting power of a transmitter is herein described. A transmitter transmits a pattern to a receiver at a differential voltage. The length of the pattern, in one embodiment, is selected to be a reasonable length training pattern, ... | 01/07/2010 |
| 20090323857 | CONFIGURABLE SUB-BAND FILTERING TO REDUCE PEAK-TO-AVERAGE POWER RATIO OF OFDM SIGNALS OR THE LIKE Briefly, in accordance with one or more embodiments, a reduction in peak-to-average power ratio (PAPR) in an OFDM signal may be achieved by clipping the OFDM signal, extracting the clipping noise, filtering the clipping noise, and then constructing the clipped OFDM sign... | 12/31/2009 |
