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Patent Searching and Data


Matches 251 - 300 out of 4,502

Document Document Title
WO/2007/090164A3
Systems and methods for pulse width modulating waveforms to represent asymmetric signal levels using pulses that are symmetric within their respective switching periods. One embodiment comprises a pulse width modulation system including ...  
WO/2007/083281A1
A system and method for Cartesian modulation achieved via generation of a three-level pulse width modulated signal. The system in overview comprises two binary pulse width modulated signal generators receiving signals related to the in-p...  
WO/2007/081327A1
A method and apparatus modulate a polarity of a burst of pulses of the impulse radio signal using a first pseudo noise sequence generated by a shift register and a position of the burst of pulses using a second pseudo noise sequence gene...  
WO/2007/077821A1
A stepwise control signal (S1) generated from a control signal generator (1) and a triangular carrier signal (S2) generated from a carrier generator (2) are compared by a digital comparator (3) and its comparison signal (S3) is provided ...  
WO/2007/055519A1
Disclosed is a constant current driving circuit for driving a constant current in the form of a Pulse Width Modulation (hereinafter referred to as "PWM") current (hereinafter referred to as "PWM constant current"), and a Light Emitting D...  
WO/2007/046363A1
After a moment in time when the level of an output signal (S4) is inverted by first and second short circuit FETs (55, 56) as a circuit for inhibiting level inversion, the inverted state is sustained and level inversion is inhibited. At ...  
WO/2007/048014A2
A system for and method of reducing power consumed by an electronic system is disclosed. The system includes an energy controller for controlling power to one or more functional modules or regions on the electronic system. Each of the fu...  
WO/2007/040814A1
A clock oscillator system for use in providing the switching regulator duty cycle control in a fixed frequency (no cycle skipping) operation is provided. In one embodiment, the circuit according to the invention uses an analog feedback l...  
WO/2007/036464A3
The invention relates to a frequency modulation switching circuit (1) for controlling a useful circuit (30), said switching circuit comprising an integrated component (10) provided with a saw tooth generator (11) for generating a saw too...  
WO/2007/036464A2
The invention relates to a frequency modulation switching circuit (1) for controlling a useful circuit (30), said switching circuit comprising an integrated component (10) provided with a saw tooth generator (11) for generating a saw too...  
WO/2007/031940A2
Generating an output pulse signal (Y), which has an output signal period (Ty), which is divided by a magnitude transition into a leading part (LP) and a trailing part (TP). During each output signal period (Ty) altering means (27 to 36) ...  
WO/2007/031940A3
Generating an output pulse signal (Y), which has an output signal period (Ty), which is divided by a magnitude transition into a leading part (LP) and a trailing part (TP). During each output signal period (Ty) altering means (27 to 36) ...  
WO/2007/031840A1
A PWM signal generating circuit according to the invention includes a digital PWM signal generating circuit that generates a digital PWM signal having a resolution of 2n based on a clock signal CLK and n-bits (n ≥ 1) of digital informa...  
WO/2007/028236A2
The present application describes a method and filter for shaping a series of pulses spaced in time for subsequent transmission in a communications system, each of the pulses having a magnitude comprising the steps of providing a generic...  
WO/2007/028236A3
The present application describes a method and filter for shaping a series of pulses spaced in time for subsequent transmission in a communications system, each of the pulses having a magnitude comprising the steps of providing a generic...  
WO/2007/028275A1
The prevent invention provides a pulse generating circuit and a circuit which utilizes the pulse generating circuit to implement LCD gray scale. Said LCD gray scale implementing circuit possesses pulse generating unit, gray data reading ...  
WO/2007/019498A3
A method for coding time signals based on generating an asynchronous biphasic pulse train is provided. The method includes generating response signals based upon one or more input signals. A pulse comprises a positive pulse if a voltage ...  
WO/2007/019498A2
A method for coding time signals based on generating an asynchronous biphasic pulse train is provided. The method includes generating response signals based upon one or more input signals. A pulse comprises a positive pulse if a voltage ...  
WO/2007/005109A2
Methods, system (10), and computer programs for compensating for jitter in a communication system are described. A transfer function of a transmission medium (16) is measured and an output signal (20) that results from propagating an inp...  
WO/2007/000943A1
A counter circuit (6) increments the count value by one in synchronization with a clock pulse received from an oscillating part (4). A lower-order decoder (12) receives a count value from the counter circuit (6) and compares a lower-orde...  
WO2005017669A3
A system, method and apparatus for sampling an electromagnetic signal is provided. In one embodiment of the present invention, data is obtained from an electromagnetic signal by sampling the received signal and demodulating the signal wi...  
WO/2006/124155A2
A digital amplifier system for driving a capacitive load includes a digital amplifier controller responsive to a digital input command for producing a pulse density modulation signal representative of the digital input command; a switchi...  
WO2006015000A3
A method is disclosed for generating pulse width modulated pulse control signals for controlling switches in a switching power supply. First, a count value is determined of a master clock (5618) within a switching cycle of the power supp...  
WO/2006/121260A1
There is provided a method and apparatus for output pulse width modulation in a digital amplifier including: a determining step of adding or subtracting a value corresponding to a predetermined offset to or from an input audio signal alt...  
WO2006044287A3
Apparatus and methods ofultra-wideband communication are provided. In one embodiment, an ultra-wideband receiver comprises anenvelope detector that detects the amplitudeof a received ultra-wideband signal and generates a waveform represe...  
WO/2006/106718A1
An impulse waveform generating apparatus comprises a multistage delay pulse signal generating part for generating a plurality of delay pulse signals from a timing signal; a signal source signal generating part for generating, from the de...  
WO/2006/102315A2
A system communicates data and includes an encoder for encoding communications data with a forward error correction cod (102). A data randomizer (106) randomizes the communication data with a random bit sequence and a combining circuit (...  
WO2005119910A3
A system and method to transport high bit-rate data over wired or wireless means using specially modulated radio frequency carrier waves using an integer cycle or impulse modulation detection method where the signal to be demodulated is ...  
WO/2006/097718A3
A method and apparatus, for displaying the value of an operating parameter of an electronically controlled power unit such as an internal combustion engine, comprising: deriving a signal from an ECU of the power unit to represent the ope...  
WO/2006/098875A2
A method of providing encoded data can include receiving a datum (1203). Responsive thereto, the datum can be encoded into a waveform pulse to reflect a position (1205) and phase (1207) corresponding thereto. A signal can be output with ...  
WO/2006/097718A2
A method and apparatus, for displaying the value of an operating parameter of an electronically controlled power unit such as an internal combustion engine, comprising: deriving a signal from an ECU of the power unit to represent the ope...  
WO2006039290A3
A circuit for generating a spread frequency spectrum waveform with shaped frequency spectrum distribution. A waveform generator has a spread spectrum waveform generating circuit (1) that generates a waveform with a spread spectrum and a ...  
WO2005022810A3
The method of the present invention provides efficient resource allocation in terms of subcarrier, bit and corresponding power of QoS for real time services in multiuser OFDM systems (13 in Fig. 1). The invention takes advantage of the i...  
WO/2006/071197A1
Disclosed is a novel design of a fully integrated UWB transmitter. The transmitter includes a pulse generator, a pulse modulator, and an ultra-wideband drive amplifier. A new low voltage low power pulse generator circuit is disclosed whi...  
WO2005065070A3
A system and method for generating transmit weighting values (514) for signal weighting that may be used in various transmitter and receiver structures is disclosed herein. The weighting values are determined as a function of frequency b...  
WO/2006/063192A1
Methods and systems for modulating (508) a radio frequency signal by a continuous-time signal are presented. More particularly, techniques and systems for converting an analog signal (202) to a continuous-time digital signal and using th...  
WO/2006/061802A1
A data transmission and reception method includes transmitting a plurality of position data bits and a amplitude bits with each of the pulses. The method also includes decoding the position bits and the amplitude bits. An ultra-wideband ...  
WO/2006/059367A1
A pulse modulator circuit comprising a pulse modulation mixer that receives a local oscillating wave and a first pulse wave and mixes a 2n multiple of the local oscillating wave (where n is an integer) with the first pulse wave to output...  
WO/2006/060170A1
A microcontroller having digital to frequency converter and pulse frequency modulator capabilities. The digital to frequency converter (DFC) generates a 50 percent duty cycle square wave signal that may be varied in frequency, wherein th...  
WO2006039790A3
The present invention provides an extension to a standard N-bit digital pulse width control method which can discriminate 2N discrete pulse widths per pulse cycle. The present invention provides a method and apparatus that can modulate t...  
WO/2006/057649A3
A flexible and programmable circuit for generating a radio frequency signal for transmission includes two delta-sigma modulators (62,64), a quadrature clock generator (70) for generating two clock signals (71, 73) having a 90 degree phas...  
WO/2006/051735A1
A modulating circuit that is configured by use of a simple structure so as to increase the amount of information to be transmitted. A transmitting apparatus capable of easily generating a desired waveform even for any very short wavelets...  
WO2006023427A3
A pulse width modulation (PWM) generator featuring very high speed and high resolution capability and the ability to generate standard complementary PWM, push-pull PWM, variable offset PWM, multiphase PWM, current limit PWM, current rese...  
WO2006000796A3
An electrical signalling system comprises a modulator arranged to accept information and encode that information in an alternating signal containing repeated rising and falling edges, the encoding being by way of the time between consecu...  
WO2005086861A3
Optimum usage of time diversity and significantly higher data rates are achieved by utilizing an adaptive Ultra-wideband impulse radio (UWB IR) transmission scheme based upon information about the channel state at a particular time insta...  
WO/2006/039290A2
A circuit for generating a spread frequency spectrum waveform with shaped frequency spectrum distribution. A waveform generator has a spread spectrum waveform generating circuit (1) that generates a waveform with a spread spectrum and a ...  
WO/2006/028628A1
A dual phase pulse modulation (DPPM) decoder circuit (Fig. 3) processes a DPPM signal, which is in the form (Fig. 28) of a series of high and low pulses whose pulse widths represent successive groups (e.g., 00, 01, 10, 11) of M data bits...  
WO/2006/023427A2
A pulse width modulation (PWM) generator featuring very high speed and high resolution capability and the ability to generate standard complementary PWM, push-pull PWM, variable offset PWM, multiphase PWM, current limit PWM, current rese...  
WO2005036747A3
A programmable pulse generator (100) having a clock signal delay chain (10), multiplexer (20), and reduced voltage charge circuit (60). The clock delay chain (10) comprises a plurality of propagated delays, coupled to the multiplexer (20...  
WO/2006/020503A3
A digital timing read back and an adaptive feedforward compensation algorithm to reduce harmonic distortion is disclosed. More specifically, the approach generates harmonic components digitally with the same magnitude but at an opposite ...  

Matches 251 - 300 out of 4,502