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WO/2010/082245A1 |
A load driving device able to reduce offset voltage without requiring a configuration for resetting the charge of the integrating capacitance and terminals for correcting offset. In the load driving device, an input selector selects an ...
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WO/2010/078501A1 |
Input data is encoded using a look-up table and then transmitted over a conductive transmission medium as a series of electrical pulses. The look-up table includes data elements. The length of each pulse is calibrated to correspond to on...
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WO/2010/072550A1 |
The invention relates to a series unit (1) for a switching power amplifier (2) for a high-frequency transmission circuit (16). The series unit (1) feeds a pulse-duration modulated HF pulse signal (22) to the switching power amplifier (2)...
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WO/2010/058310A2 |
A quadrature out-phasing system comprising: a first baseband signal modifier (6) arranged to receive a first baseband signal component (2) and output a first constant envelope RF carrier (12) and a second constant envelope RF carrier (14...
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WO/2010/059938A1 |
In one embodiment, the digital pulse width modulator of these teachings includes comparators and a number of phases and capable of increasing resolution without increasing clock frequency. In another embodiment, the digital pulse width m...
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WO/2010/040692A1 |
Instead of reducing the pulse widths of all pulses simultaneously in order to reduce the output power of a switched-mode amplifier linearized by a pulse-width modulator, the width of every other (or every n-th) pulse is reduced. When the...
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WO/2010/038166A2 |
Transceivers for wireless nodes often contain both a crystal and an acoustic wave device. The present invention directly uses an acoustic wave device for modulation and demodulation. As a result the crystal, which is both bulky and expen...
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WO/2010/025626A1 |
A device for controlling a pulse width is disclosed. The device comprises: a first univibrator (U1A) for receiving a syncpulse and generating and outputting a negative pulse whose width is a first presetted threshold, a second univibrato...
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WO/2010/014085A1 |
A signal processor (30) is provided. The signal processor (30) is configured to receive a first analog signal and convert the first analog signal into a digital signal. The digital signal is transmitted across an electrical barrier and c...
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WO/2010/010278A1 |
The invention relates to a method for transmitting an at least synchronization and data signal (S) on a unifilar bus between a master device and at least one slave device, wherein a first transmission channel (C1) from the master device ...
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WO/2010/006836A1 |
In order to actuate a controllable electronic switch (S) at precisely defined switching levels, a micro-controller (MC) controls a comparator (K) via a resistance network comprising a first voltage divider having two resistors (R1, R2) a...
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WO/2009/156795A1 |
A semiconductor device (200) comprising timer logic (210) for generating a first modulated waveform signal, and delay logic (220), operably coupled to the timer logic (210) and arranged to provide a first delay in a rising edge of the fi...
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WO/2009/146083A2 |
Methods, systems, and devices are described for providing a communication system for handling pulse information. Embodiments of the invention provide a pulse shaping unit operable to avoid saturation of the pulse transformer, while being...
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WO/2009/137573A1 |
Dead time compensated complementary pulse width modulation (PWM) signals (PWMH, PWML) are derived from a PWM generator by first applying time period compensation to the PWM generator signal (450) based upon the direction of current flow ...
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WO/2009/137702A1 |
Embodiments of the present invention provide for improved estimation of environmental parameters in a dual-polarization radar system. In some embodiments, environmental parameters can be estimated using a linear combination of data recei...
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WO/2009/131440A1 |
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 refer...
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WO/2009/127036A1 |
A method and apparatus are provided for implementing an impulse ultra-wideband communications system which combines the technique of transmitted reference (TR) with a code-sifted reference scheme that separates the reference and the data...
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WO/2009/127739A1 |
There is disclosed a method and apparatus for generating, in an envelope tracking modulator of a mobile radio transmission apparatus, a pulse width modulated, PWM, signal representing a time-varying signal, the method comprising, for eac...
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WO/2009/127361A1 |
The present invention relates to a method for generating an analog signal generated by a PWM signal, the cyclic relationship and period of which are parameterizable. It is thus possible to select the pair formed from the cyclic relations...
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WO/2009/125377A1 |
A driver for driving an LED uses PWM in a sequence of the periods. The driver has a modulo counter, that is reset after each period. The driver has a first adder for combining the count value with a quantity indicative of a shift of the ...
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WO/2009/102128A2 |
The invention relates to a pulse width modulator, more particularly to a cross-coupled pulse width modulator. A crossing input signal modulator according to the invention comprises: a positive path block which includes a first integrato...
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WO/2009/098603A1 |
The present invention relates to an electronic device (1) comprising a controller (4) which produces different control signals (S1, S2) by making changes in a master signal and controls the circuits (2) to which spread spectrum is applie...
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WO/2009/092722A1 |
Sigma delta pulse length modulator, comprising a signal input with a difference stage, the first input of which receives an analog input signal, said stage being configured to produce and output a difference signal corresponding to the d...
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WO/2009/088886A2 |
Systems and methods for implementing over-current protection in amplifiers are provided, including systems, methods and devices for specifying a clip level at which to clip an audio signal in response to an over-current condition being d...
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WO/2009/084201A1 |
Provided is a signal modulation circuit which can control a transmission power even when performing a level adjustment of continuous signals from an oscillation circuit. A pulse generation circuit as an example of the signal modulation c...
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WO/2009/078811A1 |
A method for transmitting data between first and second nodes in a network comprises (a) the first node sending a start packet to the second node, (b) the first node starting a first counter concurrently with sending the start packet, wh...
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WO/2009/068370A1 |
The invention relates to a regulating device for regulating an average current through an inductive load (L, Rl), wherein the load can be connected by a switch (T1) to a voltage source (U) and the average current can be set by the duty c...
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WO/2009/054503A1 |
A PWM control method increases/decreases a PWM signal duty ratio with a predetermined resolution so as to control the PWM signal duty ratio in case of PWM control. When the High period in the PWM signal duty ratio is shorter than the ris...
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WO/2009/051499A1 |
The present invention relates to a method of simulating an initial component of a signal to approximate a component of a reference signal, the method characterised by the steps of; i) generating a source signal which includes at least on...
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WO/2009/034146A1 |
The present invention relates to a method for generating a pulse width modulated (PWM) signal, which includes determining a PWM period and/or a pulse width of the pulse width modulated signal (fpwwi) by counting the number of clock cycle...
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WO/2009/018222A2 |
Briefly, in accordance with one or more embodiments, in a pulse position and pulse position modulation out-phasing transmitter, the range of the phase angle, theta, may be divided into more than one range to drive a first power amplifier...
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WO/2009/008862A1 |
Disclosed herein are mud pulse telemetry systems and methods that employ some combination of modulated pulse positions, modulated pulse widths, and modulated pulse amplitudes to increase telemetry data rates. In at least some of the empl...
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WO/2009/006238A1 |
Using a combination of frequency dithering of a PWM counter and a variable time delay circuit yields improved PWM frequency resolution with realizable circuit components and clock operating frequencies. A controllable time delay circuit ...
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WO/2009/001254A2 |
Apulse width modulation (PWM) circuit comprises a first integrator (g m1) witha first feedback capacitor (C1), a second integrator (gm1) with a second feedback capacitor (C2) and a comparator (A0) having a first input (V1) connected to t...
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WO/2008/151251A1 |
Techniques for multi-wire encoding with an embedded clock are disclosed. In one particular exemplary embodiment, the techniques may be realized as a transmitter component. The transmitter component may comprise at least one encoder modul...
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WO/2008/137652A1 |
A power control system (300) includes a switching power converter (306) and a power factor correction (PFC) and output voltage controller (302). The switching power converter (306) utilizes a nonlinear energy transfer process to provide ...
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WO/2008/110987A2 |
A device (100) for processing data, the device (100) comprising an integrator unit(103, 104) adapted for integrating an input signal (V I) and a correction unit (101, 102) adapted for correcting a clipping integrator unit (103, 104) by f...
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WO/2008/109061A2 |
Methods and apparatus are described for time domain signals. A method includes creating a bipolar pulse whose high (up) and low (down) periods are separately and precisely controllable.
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WO/2008/106456A2 |
A multiphase hybrid digital pulse width modulator can comprise a counter that is selectable between at least two different numbers of states to indicate a first portion of a switching period. Unclocked logic can indicate a second portion...
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WO/2008/095145A1 |
Switching amplifier includes first and second output terminals that may be connected to a load. A pulse-width modulator receiving an input signal to obtain respective positive and negative values of the input signal. The modulator is con...
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WO2007124235B1 |
A packet communications system includes a method for maintaining quality of service by dynamically determining a m aximum packet size for a communications system that transports at least one of real-time and time-sensitive data and other...
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WO/2008/084419A2 |
The present invention relates to a circuit arrangement and method of applying predistortion to a baseband signal used for modulating a pulse-shaped signal, wherein an envelope information of the baseband signal is detected and slewing di...
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WO/2008/077381A2 |
The invention relates to a control unit for controlling a number of electrical loads with a number of input signals, wherein the electrical loads are controlled by means of pulse width modulated signals and the input signals are PWM-sign...
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WO/2008/076021A1 |
A switch-modulator (15) for a radio-frequency power amplifier, arranged to modulate the I-signal and the Q-signal of the complex components (I + j.Q) separately in an I-signal part (2a) and a Q-signal part (2b) in order to create a modul...
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WO/2008/072182A2 |
The present invention relates to the application of a free-tunning clock signal in a pulse- width modulator (PWM) Specifically there is disclosed an integrated circuit comprising a pulse-width modulator (2) for converting an input signal...
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WO/2008/050267A2 |
A driver (Highside Driver, Lowside Driver) adapted to drive each of final transistors (MH,Ml,Mpower) included in a power amplifier, the driver includingra first plurality of switches (Mpslow,Mpmoderates, Mpfast) having their respective m...
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WO/2008/029091A2 |
A switching amplifier includes a modulator, which includes a pulse generator. The pulse generator generates positive and negative pulses, in response to an input signal, and the frequency of the negative pulses can be controlled independ...
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WO/2008/025153A1 |
The present invention provides a pulse-width modulation (PWM) method and apparatus, and light source driven thereby. In particular, the present invention provides a PWM method and apparatus for generating a PWM signal having a desired re...
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WO/2008/020384A1 |
The present invention relates to an electronic device that includes an integrated power comparator circuit (1) for a self - oscillating class D system (100). The integrated power comparator circuit (1) has a modulation stage (10), wherei...
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WO/2008/013023A1 |
Provided is a processing method in an operation system, which performs an operation treatment on the basis of a detected quantity detected by a detecting means and which sends out the operated result of the operation treatment as a pulse...
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