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| Number | Title | Issue Date |
| 8289097 | Method and control circuit for controlling pulse width modulation The invention provides a method and a modulation circuit for pulse width modulation with feedback, wherein a pulse width modulated signal is provided on the basis of an input signal and a reference signal that is periodic and has a reference frequency. The pulse wid... | 10/16/2012 |
| 7710213 | Method for voltage limitation in a transponder A circuit for voltage limitation is provided in a transponder with a resonant circuit, which comprises at least one inductor, a capacitor, a depletion layer component with an input, output, and a control input, a first resonant circuit terminal, which is connected t... | 05/04/2010 |
| 7667552 | Discrete dithered frequency pulse width modulation A system is described for generating a discrete noise-shaped variable switching frequency signal that may be used to define a digital pulse width modulation (“PWM”) period. The system may define a switching frequency waveform that may be used to generate a curre... | 02/23/2010 |
| 7427903 | Polar modulator and a use thereof A polar modulator has a low AM-AM and AM-PM distortion comprises a phase locked loop. The phase locked loop is designed for outputting a high-frequency signal with a frequency derived from a phase modulation signal at an actuating input of the phase locked loop. A f... | 09/23/2008 |
| 7426372 | Piecewise linearizer circuit for radio frequency amplification An apparatus and method for amplifying a radio frequency signal including, generating a plurality of shaped pulses utilizing a piecewise linearizer circuit, applying the plurality of shaped pulses to a first input of a radio frequency amplifier circuit, and injectin... | 09/16/2008 |
| 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 |
| 7342971 | Bipolar waveform modulation for ultra wideband (UWB) communication networks A method for ultra wideband (UWB) communication in which UWB pulses encode binary data as either normal or inverted (anti-podal) pulses. In the case of pulses of a carrier signal, each pulse has the carrier signal either inverted or in phase, that is, shifted by 180... | 03/11/2008 |
| 7330666 | Method and apparatus for controlling modulator phase alignment in a transmitter of an optical communications system A method of controlling phase alignment in a modulator of a transmitter in an optical communications system uses a narrowband optical filter to monitor changes in power spectral density of a modulated output at and around the optical carrier frequency. In one embodi... | 02/12/2008 |
| 7301417 | Pulse width modulation method and apparatus Disclosed is a pulse width modulation method and apparatus capable of expressing as many values as possible in a pulse width modulation (PWM) period, while maintaining the center of pulse energy substantially equal to the center of the PWM period. For this end, prep... | 11/27/2007 |
| 7283011 | Method for performing dual phase pulse modulation A modulation method, referred to as dual phase pulse modulation (DPPM), represents digital data as a series of high and low pulses whose widths represent groups of M data bits, with both the high and low pulses representing successive M-bit groups. Each of the 2 | 10/16/2007 |
| 7283012 | Tri-state pulse density modulator A tri-state pulse density modulator includes a first switch device coupled to a high voltage, and a second switch device coupled to a low voltage. An adder receives a pulse density modulation (PDM) input signal and a latched input signal to generate an output sum si... | 10/16/2007 |
| 7280608 | Real time dynamic correlator Methods and systems are provided for evaluating electrical characteristics of a transmitter in real time using cross-correlation of a reference signal with a signal transmitted by the transmitter. A code generator is configured to generate reference code and test co... | 10/09/2007 |
| 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 |
| 7268638 | Apparatus and method for data rate multiplication The invention is a method for pulse position modulating signals which are synchronized to clocked bit periods using a clock comprising the steps of generating two, three or n signals to mark the presence of digital ones during corresponding n time slots occurring du... | 09/11/2007 |
| 7260156 | Modulation identification device A modulation identification device can be used for detecting the modulation type of a wirelessly transmitted and modulated RF signal without a-priori information on the kind of modulation used. The modulation identification device (1) comprises a n-port junct... | 08/21/2007 |
| 7242262 | Pulse polarity modulation circuit In order to provide a high-speed-pulse polarity modulation circuit for realizing low power consumption and miniaturization and reducing noise occurring at a middle level which is a baseline for a bipolar pulse, a modulation circuit for converting a unipolar pulse in... | 07/10/2007 |
| 7206356 | Wireless transmitter with reduced power consumption This wireless transmitter is composed of at least one modulator, which comprises a digital part and an analog part. The digital part comprises elements for generating the envelope of the signals to be transmitted and elements for generating the phase of the signals ... | 04/17/2007 |
| 7206457 | Method and apparatus for encoding and decoding key value data of coordinate interpolator A method and an apparatus for encoding/decoding key value data of a coordinate interpolator used in a three-dimensional graphic animation are provided. The apparatus for encoding key value data of a coordinate interpolator representing the position of each vertex of... | 04/17/2007 |
| 7203051 | Apparatus for controlling power and signal of electronic equipment with controlling unit and subordinate unit The present invention is related to electronic equipment having a controlling unit and a subordinate unit, and more particularly, to an apparatus for controlling power and signal of electronic equipment having a controlling unit and a subordinate unit which can redu... | 04/10/2007 |
| 7180384 | Universal signal modulators Universal signal modulators structures are shown which are particularly useful for selectively generating polar-modulated digital sequences from input phase and amplitude symbols and for generating quadrature-modulated digital sequences from input first and second q... | 02/20/2007 |
| 7181071 | Method and apparatus for encoding and decoding key value data of orientation interpolator node A method and an apparatus for encoding key value data of an orientation interpolator representing the rotation of an object in a keyframe image are provided. The apparatus includes a rotational differential data generator which generates, using a rotational transfor... | 02/20/2007 |
| 7154923 | Method and apparatus for providing a modulation current Techniques are disclosed for providing modulation current that includes output impedance compensation with a feed-forward bandwidth enhancement and pre-distortion modulation to control waveform transition symmetry. A feedback circuit senses output node voltage and i... | 12/26/2006 |
| 7121844 | Pick-up cap for land grid array connector A pick-up cap (13) is provided for an LGA connector (12). The LGA connector includes a load plate (24) defining a rectangular opening (240) in a middle portion thereof and a pair of pressing portions (241) surrounding the opening. ... | 10/17/2006 |
| 7119629 | Synchronized controlled oscillation modulator A synchronized controlled oscillation modulator (SCOM), comprising at least one, Controlled Oscillation Modulator (5), and synchronizing means (1, 6) connected to said COM modulator. The modulator can comprise several COM modulators, and the synchroniz... | 10/10/2006 |
| 7103327 | Single side band transmitter having reduced DC offset A single side band transmitter having reduced DC offset includes a current source modulation module, a current mirror module, a 1st mixing module, a 2nd mixing module, a summing module, and a power amplifier. The current source module is operab... | 09/05/2006 |
| 7091777 | Controller for an RF power amplifier The controller controls the amplifier and a modulated power supply, supplying power to the amplifier, by detecting an RF envelope of a signal input to the amplifier. Predistortion of the amplifier synchronous with changes of bias is provided using a look-up table. S... | 08/15/2006 |
| 7078982 | Method and device for emitting pulses on an electricity distribution network A method for emitting a predetermined series of pulses on an electricity distribution network carrying a determined voltage includes linking an electric element to the network by a switch and supplying a control signal to the switch. The switch is driven by the cont... | 07/18/2006 |
| 7075382 | Method and apparatus for modulating a pulse signal with a bit stream A method and apparatus for modulating a pulse signal with a bit stream is disclosed. The pulse signal is modulated by selectively inverting and delaying signal pulses within the pulse signal responsive to bits within the bit stream. ... | 07/11/2006 |
| 7054385 | Reduction of average-to-minimum power ratio in communications signals This invention, generally speaking, modifies pulse amplitude modulated signals to reduce the ratio of average power to minimum power. The signal is modified in such a manner that the signal quality remains acceptable. The signal quality is described in terms of the ... | 05/30/2006 |
| 7024056 | Electro-optic gating arrangement with improved duty cycle The device includes an oscillator (1) to generate an electrical signal of a predetermined frequency and a signal divider (2) to split the electrical signal into first and second signals. The frequency of the second signal is tripled by tripler (3 | 04/04/2006 |
| 7019599 | Apparatus for continuous phase quadrature amplitude modulation and demodulation An apparatus for continuous phase quadrature amplitude modulation and demodulation to continuously process phases and amplitudes at symbol change points in an M-ary quadrature amplitude modulation method. The apparatus includes a continuous phase quadrature modulato... | 03/28/2006 |
| 7017069 | PWM control circuit, microcomputer and electronic equipment A PWM control circuit, microcomputer and electronic equipment which can generate high-resolution PWM signals through a small-sized scale of circuit. The PWM control circuit includes a PWM period value setting register, a counter, an edge-point value setting register... | 03/21/2006 |
| 7009601 | System and method for test data reporting using a status signal In-flight entertainment systems provide entertainment for passengers on commercial airline flights. Presently, usually on longer flights, video entertainment is commonly available on in-flight passenger entertainment systems. In-flight entertainment systems can disp... | 03/07/2006 |
| 6975177 | Method and system for a generation of a two-level signal In a modulation system, in order to provide a two-level signal with a desired modulation which is suited to be amplified by a switching mode power amplifier, the modulation system may include a first constant envelope modulator modulating a signal according to a fir... | 12/13/2005 |
| 6973139 | Base station transmitter having digital predistorter and predistortion method thereof A base station transmitter having a digital predistorter and predistortion method is disclosed. The predistortion is accomplished by delaying a digital input signal, predistorted by a predistortion unit, for a predetermined time. A coefficient of a non-linear charac... | 12/06/2005 |
| 6943640 | Current source modulator A current source modulator (202; 302, 502) provides power to radar transmitters. The modulator comprises a power supply (210, 310, 510) providing, when enabled, a known current to a storage capacitor (145). A comparator circuit (220) prov... | 09/13/2005 |
| 6922231 | Receiver optical sub-assembly with diagnostic signal A fiber-optic receiver apparatus is described, which monitors and outputs the average received optical power of the incoming optical data beam, as well as the differential amplitude signal. ... | 07/26/2005 |
| 6900557 | High power modulator A compact transformer coupled modulator is described. The modulator includes a transformer comprising a primary and a plurality of secondary windings, where each secondary winding has an output terminal. The modulator also includes a plurality of switches, where eac... | 05/31/2005 |
| 6760385 | Universal parallel processing decoder The present invention provides an apparatus and method for universal decoding of both feedforward codes and feedback codes, such as decoding of a 512-state feedforward code, a 32-state feedback code and 8-state feedback code. Utilizing parallel processing, the prese... | 07/06/2004 |
| 6658583 | PWM control circuit, microcomputer and electronic equipment A PWM control circuit, microcomputer and electronic equipment which can generate high-resolution PWM signals through a small-sized scale of circuit. The PWM control circuit includes a PWM period value setting register, a counter, an edge-point value setti... | 12/02/2003 |
