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 |
| 8190107 | Measurement systems with envelope pre-detection An RF measurement system includes an envelope detector to extract the modulation envelope of the RF input signal. The resulting baseband envelope signal is then applied to a statistics extraction circuit which provides a precise measure of the modulation envelope. T... | 05/29/2012 |
| 8160515 | Negative amplitude polar transmitter A polar transmitter includes a phase monitoring unit for monitoring input modulating data. When a phase transition exceeds a phase transition threshold, the phase monitor unit can signal an amplitude negation unit to invert the amplitude data coupled to the polar am... | 04/17/2012 |
| 8150337 | Wireless communication device, communication state notification method, wireless communication system and program There is provided a wireless communication device forming an autonomous distributed wireless network by intermittently transmitting and receiving a predetermined communication management signal, which includes a reception portion to receive the communication managem... | 04/03/2012 |
| 8145154 | Approximation method for signal-to-noise ratio soft information for a communications system An approximation method for SNR soft information for a transmitter of a communications system includes obtaining a conditional probability density function (PDF) corresponding to a response message of a transmitted packet, obtaining a PDF of a probability distributi... | 03/27/2012 |
| 8145152 | Gain temperature compensation circuit A gain temperature compensation circuit producing a relatively small loss of power, and enabling modification of a variation width of the attenuation amount in a predetermined temperature range is provided. A gain temperature compensation circuit includes a circulat... | 03/27/2012 |
| 8145151 | Hybrid switched mode/linear mode power amplifier control In one aspect of the exemplary embodiments of this invention a method includes determining, based at least in part on a number of resource blocks to be transmitted, where the resource blocks may be spectrally contiguous or spectrally non-contiguous, a ratio of power... | 03/27/2012 |
| 8145153 | Method and system for calibrating an analogue I/Q-modulator of a transmitter The invention relates to a method and a system for calibrating an analogue I/Q-modulator (2) of a transmitter (3), wherein a calibration signal (s(tk)) is transmitted and an in-phase signal (sI(tk)) and a quadrature-pha... | 03/27/2012 |
| 8140032 | Antenna system and diagnosis method for a vehicle access control system An antenna system (10, 11) with a plurality of individual antennae (14) in each case connected in a separate drive path (12), to which a common signal transmitter (16) is assigned, and with a triggering unit (22) provided for selec... | 03/20/2012 |
| 8140033 | Method for automatic impedance matching for a radiofrequency circuit and transmission or reception system with automatic matching The invention relates to a method for automatically matching the antenna impedance for a radiofrequency transmission circuit having an amplifier. An impedance matching network is inserted between the amplifier and the antenna. The output current i and voltage V from... | 03/20/2012 |
| 8116703 | Wireless transmitter calibration using device receiver Portable electronic devices are provided that contain radio-frequency transceiver circuitry. Power amplifier circuitry may amplify transmitted radio-frequency signals from the radio-frequency transceiver circuitry. The power amplifier circuitry may be powered with a... | 02/14/2012 |
| 8116702 | Transmission over a multiple input multiple output broadcast channel (MIMO-BC) A Multiple Input Multiple Output (MIMO) communication system 1 has a transmitter for transmitting signals over a MIMO Broadcast Channel (MIMO-BC) 6. Data for communication to respective receivers 41, 4K-1, 4 | 02/14/2012 |
| 8081936 | Method for tuning a digital compensation filter within a transmitter, and associated digital compensation filter and associated calibration circuit A method for tuning a digital compensation filter within a transmitter includes: obtaining at least one loop gain calibration result by performing loop gain calibration based upon signals of at least a portion of the transmitter, and obtaining at least one resistanc... | 12/20/2011 |
| 8060035 | Transmit power control techniques for wireless communication systems Methods and systems of controlling transmit power in a multi-user wireless communication system is provided, A transmit power, level for a transmitter is determined according to an algorithm based in communication theory, such as an iterative water-filling procedure... | 11/15/2011 |
| 8060036 | Wireless terminal device and method of establishing communication connection with an access point A mobile terminal device includes a detector, a transceiver, an analyzer, an execution module, and a connection module. The detector generates a probing request signal. The transceiver receives signals sent from a plurality of access points (AP). The analyzer retrie... | 11/15/2011 |
| 8060037 | Circuit and method of calibrating direct current offset in wireless communication device A circuit for calibrating the DC offset in a wireless communication device utilizes a voltage-generating circuit to generate a first voltage value and its negative value, and utilizes a detecting circuit to detect an output of the wireless communication device and g... | 11/15/2011 |
| 8000662 | Transmission characteristic adjustment device, circuit substrate, and transmission characteristic adjustment method A transmission characteristic adjustment device and the like that can carry out circuit adjustment before an error occurs, and has a transmission characteristic with high reliability without generating an error are provided. The device determines existence or... | 08/16/2011 |
| 7986925 | Techniques for calibrating a transceiver of a communication device A technique for calibrating a transceiver of a wireless communication device includes selectively coupling an output node of a transmitter of the transceiver to an input node of a receiver of the transceiver. A calibration signal is provided, from the output node of... | 07/26/2011 |
| 7974594 | Method for checking connectivity between base station controller and mobile switching center The present invention relates to a method for checking connectivity between a BSC (Base Station Controller) and an MSC (Mobile Switching Center), including: the MSC loopbacking a circuit and sending a connectivity check command to the BSC to instruct the BSC to perf... | 07/05/2011 |
| 7974595 | Methodology for assessing degradation due to radio frequency excitation of transistors One embodiment relates to an on-chip power amplifier (PA) test circuit. In one embodiment, a PA test circuit comprises a controllable oscillator (CO) configured to generate a radio frequency (RF) signal, a parallel resonant circuit tuned to the radio frequency, a pr... | 07/05/2011 |
| 7970361 | Frequency band recognition methods and apparatus A user equipment (UE) without service in a communication system measures the radio-frequency (RF) power in a bandwidth received by the UE on the possible downlink carriers in a frequency band that is supported by the UE. The bandwidth is typically the bandwidth of c... | 06/28/2011 |
| 7962110 | Driver circuit and test apparatus Provided is a driver circuit that outputs a transmission signal according to a reception signal received from outside, including a first driver that outputs a voltage according to an input first signal; a second driver that receives the voltage output by the first d... | 06/14/2011 |
| 7962109 | Excess current and saturation detection and correction in a power amplifier A system and method for detecting and correcting over-current and/or over-voltage conditions in power amplifier circuitry in a transmit chain of a mobile terminal are provided. In general, over-current detection and correction circuitry combines a current detection ... | 06/14/2011 |
| 7953379 | Method and system for calibrating quadrature modulators A calibration method for reducing modulation errors in a telecommunication transmitter apparatus includes providing a plurality of pairs of test signals; the test signals of each pair are substantially in quadrature to each other, and the pairs of test signals are a... | 05/31/2011 |
| 7941106 | Systems and methods for controlling local oscillator feed-through A method for controlling local oscillator (LO) feed-through in a direct transmitter includes detecting a signal level corresponding to LO feed-through in a radio frequency (RF) signal that is output by a direct transmitter. Responsive to detecting the signal level c... | 05/10/2011 |
| 7941107 | High linearity, high efficiency power amplifier with DSP assisted linearity optimization A communications transceiver includes a baseband processor, a receiver section, and a transmitter section that includes a power amplifier. The receiver and transmitter sections communicatively couple to the baseband processor. In a calibration operation, the baseban... | 05/10/2011 |
| 7937050 | Built-in testing signal wireless communication apparatus and testing method thereof A wireless communication apparatus has: a direct current generator, for generating a direct current signal and a transmitter. The transmitter includes: an oscillating signal generator for generating an oscillating signal; a mixer for mixing one of the direct current... | 05/03/2011 |
| 7937051 | Apparatus and method for measuring the level of RF signals, and a transmitter including a wide band measurement circuit On a radio frequency signal path a transmission phase shifter causes a phase shift. From a first end of said phase shifter comes a first sample, and from a second end of said phase shifter comes a second sample. Another phase shifter changes the phase of the second ... | 05/03/2011 |
| 7933566 | Cordless phone detection in 2.4 GHz for interference mitigation A system and method for determining whether sampled spectrum data comes from a cordless phone is disclosed. The system includes a device to detect the sampled spectrum data and an algorithm to analyze the sampled spectrum data. The algorithm separates the narrowband... | 04/26/2011 |
| 7925228 | Method and system for calibrating quadrature modulators A calibration method and system for reducing modulation errors in a telecommunication transmitter apparatus includes providing a pair of test signals, which are substantially in quadrature to each other, and to repeat an estimation loop. The estimation loop starts w... | 04/12/2011 |
| 7890065 | Temperature compensated power detector A temperature-compensated power detector for detecting variations in the power level of an RF signal. The temperature-compensated power detector includes a detector circuit and a temperature compensating circuit. The detector circuit detects the power level of an RF... | 02/15/2011 |
| 7881681 | Self-calibrating direct conversion transmitter with converting/steering device A converting/steering device has a normal mode and a calibration mode. The converting/steering device includes a merged mixer/VGA and a mode controller. The merged mixer/VGA has a mixing stage and an amplifying stage. In the normal mode, the mode controller deactiva... | 02/01/2011 |
| 7881682 | System and method for configuring a wireless module power limit A system for configuring a wireless module power limit comprises a wireless module having a control module configured to automatically select a power limit setting from one of a plurality of power limit settings to set a maximum output power level for the wireless m... | 02/01/2011 |
| 7831222 | Method and apparatus for improving the isolation characteristics of HD radio combiners A method and system are provided for improving the isolation characteristics of a combiner. In a system comprising a digital and analog radio signal combiner and a digital transmitter, an analog transmitter, an antenna, and a reject load coupled to the combiner, adj... | 11/09/2010 |
| 7817972 | Method and arrangement for mutual information based power control In a method for power control in a telecommunication system, the transmit power is adjusted based on at least the mutual information expression or a representation thereof. According to one aspect the transmit power for a coming slot is controlled based on the previ... | 10/19/2010 |
| 7764935 | Phase and power calibration in active antennas A switch is particularly advantageous for calibration of signal phase between transmitters, and other uses. The switch has a first data input adapted to input a transmit signal from a first transmitter, a first data output, at least one and preferably multiple bidir... | 07/27/2010 |
| 7751784 | Method of protecting power amplifiers In a power amplifier, techniques are provided for protecting the power amplifier from temperature extremes resulting from conditions such as load mismatches. After sensing the temperature of the power amplifier, the operation of the RF power amplifier is controlled ... | 07/06/2010 |
| 7751785 | Antenna selection system and method A system and method for wireless communication. The system can include a transmitter that transmits a data signal having a time period without data transmission. The system can also include a receiver including a first antenna, a second antenna, a switch that activa... | 07/06/2010 |
| 7751783 | Power amplifier protection circuit and associated methods In a power amplifier, techniques are provided for protecting the power amplifier from temperature extremes resulting from conditions such as load mismatches. After sensing the temperature of the power amplifier, the operation of the RF power amplifier is controlled ... | 07/06/2010 |
| 7751786 | Method and apparatus for adaptively controlling signals A signal processing system according to various aspects of the present invention includes an excursion signal generator, a scaling system and a filter system. The excursion signal generator identifies a peak portion of a signal that exceeds a threshold and generates... | 07/06/2010 |
| 7734261 | Calibrating amplitude and phase imbalance and DC offset of an analog I/Q modulator in a high-frequency transmitter The object of the invention, which relates to a method and an arrangement for calibrating an analog I/Q modulator in a high-frequency transmitter, is to provide a method and an associated circuit arrangement by means of which a calibration of the I/Q modulator is ca... | 06/08/2010 |
