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Matches 151 - 200 out of 4,510

Document Document Title
WO/2011/019319A1
An air ionizer electrode drive circuit and method in which an AC high voltage of predetermined constant amplitude is output by a high voltage generator (16) for application to the ionizer electrodes. The level of ions produced is then co...  
WO/2011/017245A3
A pulse width modulation (PWM) frequency converter (100) converts an input PWM signal to an output PWM signal having a different frequency while maintaining a substantially equal duty ratio. The PWM frequency converter (100) samples the ...  
WO/2011/017245A2
A pulse width modulation (PWM) frequency converter (100) converts an input PWM signal to an output PWM signal having a different frequency while maintaining a substantially equal duty ratio. The PWM frequency converter (100) samples the ...  
WO/2010/151891A3
Techniques for generating a signal having a predetermined duty cycle. In an exemplary embodiment, a first counter is configured to count a first number of cycles of an oscillator signal, and a second counter is configured to count a seco...  
WO/2010/145836A1
An integrator (100) comprises an amplification and phase shifting element (170) with a feedback path (130) forming a loop and comprising a capacitive element (140). An input signal is summed into the loop, and the loop is arranged to osc...  
WO/2010/147292A1
An audio amp with a spurious wave noise reduction circuit according to the present invention comprises: an input unit receiving an audio signal for each channel; a modulation unit converting the audio signal into a pulse width modulation...  
WO/2010/136225A1
The present application is directed generally to switch mode power supplies operating in a master-slave configuration and provides a method of synchronizing the PWM outputs from the master and slave devices to avoid problems such, for ex...  
WO/2010/132460A2
A DC-coupled two-stage gate driver circuit for driving a junction field effect transistor (JFET) is provided. The JFET can be a wide bandgap junction field effect transistor (JFET) such as a SiC JFET. The driver includes a first turn-on ...  
WO/2010/132460A3
A DC-coupled two-stage gate driver circuit for driving a junction field effect transistor (JFET) is provided. The JFET can be a wide bandgap junction field effect transistor (JFET) such as a SiC JFET. The driver includes a first turn-on ...  
WO/2010/129824A1
All-digital techniques for generating periodic digital signals having selectable duty cycles. In one aspect, a computation block (210) is provided for computing the product of a selected duty cycle (C) and a discrete ratio (L) between a ...  
WO/2010/120252A1
An amplitude of a carrier signal at an output of an impedance matching block is measured as a first amplitude value. A value of the signal amplitude at the output of the impedance matching block is calculated as a second amplitude value ...  
WO/2010/109453A1
A method for reducing the transition rate of a PWM signal representing an original signal, thus reducing energy losses of devices stimulated by the signal, while decreasing jitter and SNR of the output low passed signal. Every R pulses o...  
WO/2010/098202A1
A resistor (16) is provided between an input terminal and a node (N0). A switch (15) is provided between the node (N0) and a ground voltage (GND) and closes according to the voltage level of the node (NC). A resistor (13) is provided bet...  
WO/2010/088661A1
In a particular embodiment, a device (102) includes a reference voltage circuit (110) to generate a controlled voltage. The device includes a frequency circuit (106) configured to generate a frequency output signal (328) having a pre-set...  
WO/2010/083628A1
A method for generating an actuation signal for a light source is provided. A random phase delay for each period of an input signal is generated, where each period is a predetermined length. Each phase delay is added to a predetermined a...  
WO/2010/082954A1
A pulse width modulation circuit may generate an adjustable output signal that periodically transitions between a first and a second state with an adjustable duty cycle. A first pulse generator circuit may be configured to generate a fir...  
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 ...  
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...  
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)...  
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...  
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...  
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...  
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...  
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...  
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...  
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 ...  
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...  
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...  
WO/2009/146083A3
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...  
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...  
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 ...  
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...  
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...  
WO/2009/131440A8
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...  
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...  
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...  
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...  
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 ...  
WO/2009/124221A3
A direct current to pulse amplitude modulated ("PAM") current converter, denominated a "PAMCC", is connected to an individual source of direct current. Some embodiments provide a PAMCC for each direct current source in an array, for exam...  
WO/2009/124224A3
A direct current to pulse amplitude modulated ("PAM") current converter, denominated a "PAMCC", is connected to an individual source of direct current. The PAMCC receives direct current and provides pulse amplitude modulated current at i...  
WO/2009/102128A3
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...  
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...  
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...  
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...  
WO/2009/094352A3
Waveform errors between multiphase PWM signals caused by external synchronization signals is solved by providing a capture register in a master time base circuit. The capture register is triggered by the external sync signal so as to 'ca...  
WO/2009/088886A3
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...  
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...  
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...  
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...  
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...  

Matches 151 - 200 out of 4,510