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7600142 |
Integrated circuit conserving power during transitions between normal and power-saving modes
An integrated circuit includes a volatile memory, a central processing unit that normally operates on a first clock, and an input-output circuit that transfers data in synchronization with a second...
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7598787 |
Signal generation apparatus, frequency converting apparatus, and receiver
A signal generation apparatus, a frequency converting apparatus and a receiver, in which the signal generation apparatus includes an oscillator, a duty cycle adjusting circuit, and a signal...
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7596166 |
Integrated circuit device including a spectrum spread clock generator, method for controlling the device, and ink-jet recording apparatus including the device
An integrated circuit device is provided including a plurality of circuit blocks which operate based on a clock signal. The quartz oscillation circuit outputs a first clock signal. A spectrum...
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7583158 |
PWM signal generating circuit
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...
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7573305 |
High speed divider circuit
A high speed divider circuit is disclosed. The circuit contains a plurality of latches and buffers. The maximum input clock frequency of the divider circuit is increased over that implemented with...
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7555263 |
Adaptive radio transceiver
An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a...
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7554368 |
Frequency adjusting circuit for CPU
A frequency adjusting circuit for a central processing unit (CPU) includes a transforming unit for transforming a change of a current signal of the CPU into a voltage signal, an amplifying unit for...
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7542751 |
Down-converter and calibration method thereof
A mixer and calibration method thereof are provided. A direct conversion receiver comprises a differential loading pair utilizing at least one binary weighted resistor. The binary weighted resistor...
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7535269 |
Multiplier circuit
A multiplier circuit includes a bias circuit which outputs a reference voltage and a bias signal, a first delay circuit which inputs an input signal and outputs a first delayed signal according to...
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7512394 |
Wideband up-conversion mixer
An up-conversion mixer includes a first and a second hybrid couplers and a first and a second traveling-wave mixers is disclosed. The first hybrid coupler receives an input intermediate frequency...
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7509112 |
Wideband image rejection mixer
An image rejection mixer including a first and a second hybrid couplers and a first and a second traveling-wave mixers is disclosed. The first hybrid coupler divides an input radio frequency (RF)...
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7468620 |
Frequency generator apparatus and control circuit thereof
A frequency generator apparatus and a control circuit thereof are provided. The frequency generator apparatus comprises the control circuit and a frequency generator, wherein the control circuit...
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7443253 |
Detection device for detecting oscillator
A detection device for detecting an oscillator is provided. The detection device includes an oscillator control circuit, a frequency-decreasing circuit and a display circuit. The oscillator control...
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7443211 |
Transmitter and transmission circuit
Transmitter and transmission circuit. For realizing a differential transmitter, a switch circuit is connected between two load transistors of two complementary MOS pairs. The switch circuit can...
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7437137 |
Mixer system
A mixer system includes a multi-phase signal generator, a mixer, and a mixer control circuit. The multi-phase signal generator generates a plurality of mixer input signals, where each has a...
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7432751 |
High performance signal generation
A high performance phase detector includes a local digital oscillator for generating a digital reference signal of programmable frequency and phase. The phase detector accumulates a difference in...
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7425976 |
Variable frequency generator
A digital circuit generates very precise varying clock frequencies for applications that can tolerate a small degree of jitter but require exact longer term frequencies, e.g. a video clock for a...
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7424281 |
Image-rejection mixers having high linearity and high gain and RF circuits using the same
An integrated semiconductor image-rejection mixer having high linearity and high gain. In addition to the components of a classic image-rejection architecture, the present mixer has a...
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7389098 |
Heterodyne receiver for low noise and image frequency repression
Disclosed is a heterodyne receiver for low noise and image frequency repression, comprising: a low noise amplifier for receiving an input signal from an antenna and amplifying the signal while...
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7379723 |
Local oscillator and mixer for transceiver
In one embodiment, a local oscillator and mixer architecture may include a frequency divider having I and Q channel master storage elements formed of devices of a first size, and I and Q channel...
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7358781 |
Automation device with stored profile
The invention relates to an automation device, in which a multiplicity of physically distributed functional units communicate with each other by means of a common transmission protocol. The device...
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7348822 |
Precisely adjusting a local clock
Accurate correction of a local clock that avoids excessive drift in the local clock while avoiding an accumulation of quantization errors. A local clock according to the present techniques...
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7332944 |
Frequency-controllable oscillator
A frequency-controllable oscillator, having an oscillation device in which the oscillation frequency is controlled on the basis of a feedback current or voltage; a constant current source circuit;...
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7321751 |
Method and apparatus for improving dynamic range in a communication system
An apparatus for improving dynamic range includes a frequency down-conversion module that receives an input signal and a bias circuit. The bias circuit includes a first resistor and a second...
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7319851 |
Mixer circuit, receiver comprising a mixer circuit, wireless communication comprising a receiver, method for generating an output signal by mixing an input signal with an oscillator signal
The invention relates to a mixer circuit comprising an input node for receiving an input signal, a first output node 202 , and a second output node 203 , voltage to current conversion means and...
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7304512 |
Frequency divider and an electronic device incorporating such a frequency divider
The frequency divider for high-frequency clock signal comprises: a shift register ( 8 ) having cells ( 10 - 13 ) for storing each bit of an initial word, said cells being series connected in a loop...
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7292835 |
Wireless and wired cable modem applications of universal frequency translation technology
Frequency translation and applications of same are described herein, including cable modem applications. Such applications include, but are not limited to, frequency down-conversion, frequency...
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7278040 |
Mechanism for providing measured power management transitions in a microprocessor
An apparatus and method are provided that enable a computing device to make graceful power state transitions that do no impose unnecessary power surge compensations requirements on associated power...
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7262644 |
Method and apparatus for switching frequency of a system clock
A system clock switching apparatus, which includes a clock source for providing a reference clock signal; a frequency divider electrically connected to the clock source for dividing the reference...
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7237128 |
Method and apparatus to dynamically change an operating frequency and operating voltage of an electronic device
In one embodiment, there is provided a method comprising determining a target operating point for an electronic device, the target operating point including a target operating frequency and a...
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7236763 |
Method and apparatus providing improved mixer performance for radio receivers
A mixer circuit ( 50 ) includes a first switching mixer ( 20 A) with a first desired signal input (RF+ and RF−), a first switching signal input (LO+& LO−), and a first output (IF+ and IF−), a...
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7236058 |
Low frequency doubler
A circuit and corresponding method for doubling the frequency of an input signal, even when the input signal is of low frequency or a square wave. The input signal is applied to a phase-shifting...
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7231266 |
Digital control device and program
A digital control device for tracking a sine wave according to the present invention has a compensator, a control object and a feedback gain. An input into the compensator is a signal obtained by...
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7230458 |
Delta/sigma frequency discriminator
Delta/sigma frequency discriminator ( 1 ) for converting a frequency (F v ) of an input signal into a digital output signal (C) comprising a frequency divider ( 8 ) which divides the input signal...
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7209842 |
Activation signal output circuit and determination circuit
A start signal output circuit having an RF/DC conversion circuit to which radio frequency power (RF) of specified frequency is inputted and from which a direct current potential (DC) is outputted,...
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7200378 |
Rocking potential-well switch and mixer
Channelizing an applied current and applying a voltage to the channelized current enables switching of the applied current. According to the present invention, an applied current enters through a...
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7196560 |
Clock frequency multiplier and method for multiplying a clock frequency
A clock frequency multiplier is provided. The clock frequency multiplier comprises a tracking circuit, a pulsing circuit, and a shaping circuit. The tracking circuit receives a clearing signal and...
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7190941 |
Method and apparatus for reducing DC offsets in communication systems using universal frequency translation technology
Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal, and applications thereof are described herein. Reducing or eliminating DC offset...
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7146150 |
Mixing circuit with low noise factor when operating at low frequency
The invention relates to a mixing circuit for mixing a first signal RF with a second signal LO including a conversion stage T 3 to convert the first signal RF into a current, a mixing core T 1 ...
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7145371 |
Variable frequency generator
A digital circuit generates very precise varying clock frequencies for applications that can tolerate a small degree of jitter but require exact longer term frequencies, e.g. a video clock for a...
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7139546 |
Up-conversion of a down-converted baseband signal in a direct conversion architecture without the baseband signal passing through active elements
A direct conversion circuit that not only down-converts the received modulated signal using a down-converting mixer into a baseband signal, but also, after performing a passive low pass filtering...
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7126390 |
Frequency conversion apparatus
A frequency conversion apparatus has a high-frequency amplifier for amplifying an input high-frequency signal, a mixer for mixing the output signal of the high-frequency amplifier with a local...
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7123061 |
Frequency converter having low supply voltage
A frequency converter converts a first current signal having a first frequency into a second current signal having a second frequency different from the first frequency. The frequency converter...
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7113008 |
Frequency mixing apparatus
A frequency mixing apparatus is provided. In the frequency mixing apparatus, a PMOS transistor is coupled to an NMOS transistor in a cascode configuration and an LO signal is applied to the bulks...
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7098709 |
Spread-spectrum clock generator
This invention provides a clock generator which is capable of improving modulation accuracy without accompanying an increase in consumption current by steady current when spectrum spread of a clock...
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7095353 |
Frequency to digital conversion
A technique of processing an input signal having an input signal phase is disclosed. The technique includes determining a number of transitions of the input signal within a period having a start...
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7093153 |
Method and apparatus for lowering bus clock frequency in a complex integrated data processing system
A data processing system ( 100 ) comprises a system bus ( 120 ), a plurality of devices ( 110, 150, 160, 170 ) coupled to the system bus ( 120 ), a bus monitor circuit ( 140 ), and a clock...
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7091757 |
Frequency generator and communication system
The object of the invention is to provide a frequency generator which is composed of an oscillator and a frequency doubler and in which difference in amplitude between differential outputs of the...
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7088154 |
Methods and arrangements for a low power phase-locked loop
Methods and arrangements for a low power, phase-locked loop (PLL) are disclosed. Embodiments include a multi-phase oscillator like a voltage-controlled oscillator (VCO) to generate multiple phases...
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7076229 |
Circuits with improved power supply rejection
Circuit comprising a noise suppressing circuitry ( 40 ) having an input ( 42 ) for a first voltage (VDD) and an output ( 43 ) for providing a supply voltage (VDDfiltered). The circuit further...
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