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Patent No. 5307162

Cloaking System Using Optoelectronically Controlled Camouflage

A Cloaking System designed to operate in the visible light spectrum, utilizes optoelectronics and/or photonic components to conceal an object within it.

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Class 331/135 - PHASE SHIFT TYPE


Subclass of Class 331 - Oscillators
Definition: Oscillators systems comprising a feedback amplifier having
No. of patents: 193
Last issue date: 10/25/2011


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NumberTitleIssue Date
8044734Method and apparatus for mitigating VCO pulling
Techniques for mitigating VCO pulling are described. In an aspect, VCO pulling may be mitigated by (i) injecting an oscillator signal, which is a version of a VCO signal from a VCO, into a transmitter and (ii) using coupling paths from the transmitter to the VCO to ...
10/25/2011
7999627Resonant circuit arrangement, method for operating said resonant circuit arrangement and method for the operation and use thereof
A resonant circuit arrangement is for generating an amplitude-shift-keyed and/or phase-shift-keyed signal. The resonant circuit arrangement includes a capacitive storage element having a first terminal and a second terminal. The first terminal is electrically connec...
08/16/2011
7969252System and method for reducing lock time in a phase-locked loop
Increasing loop gain is a common practice for reducing lock time of phase locked loops. Very high loop gains, however, often result in increasing the lock time or causing loop instability. For very high loop gains, delaying the feedback clock signal along the feedba...
06/28/2011
7629858Time delay oscillator for integrated circuits
One aspect relates to an oscillator, and various oscillator embodiments comprise an amplifier and line driver with an input and an output and a transmission line with a predetermined transmission signal time delay. The output is adapted to produce an inverted signal...
12/08/2009
7414482Resonance mode selection using a resonator-synchronized second-order oscillator
A resonator-synchronized oscillator for resonance mode selection is disclosed. In one embodiment, the resonator-synchronized oscillator comprises an oscillation loop, at least one capacitor switching circuit coupled to the oscillation loop, and a multi-mode resonato...
08/19/2008
7411466Coil-less overtone crystal oscillator
An overtone crystal oscillator including a crystal, multiple amplifiers and an RC network. The crystal has a fundamental resonance frequency and at least one overtone resonance frequency. The amplifiers are coupled in series between terminals of the crystal and the ...
08/12/2008
7397316Ring oscillator for calibrating phase error and phase-error calibration method therefor
A ring oscillator and a phase error calibration method are provided. The ring oscillator may include a first voltage-current converter for controlling and outputting an amount of tail current Itail according to a magnitude of a first control voltage applied in feedb...
07/08/2008
7391840Phase locked loop circuit, electronic device including a phase locked loop circuit and method for generating a periodic signal
A phase locked loop (PLL) circuit (1) comprising a loop input (11); a phase detector section (2) for detecting a phase difference between an input signal and a reference signal. The phase detector section (2) has a detector input connected to th...
06/24/2008
7375600Integrated quartz oscillator circuit
An integrated quartz oscillator circuit is disclosed having a capacitive voltage divider, which has a first capacitor and a second capacitor, as well as having a first transconductance amplifier, which is placed in a loop connecting a first terminal and a second ter...
05/20/2008
7356719Microcomputer
In an EEPROM of a microcomputer, data is stored for determining a communication rate CMR for fixing the data transmission time of one frame managed by a communication circuit on the basis of an oscillation output characteristic of a CR oscillating circuit that varie...
04/08/2008
7343512Controlling clock rates of an integrated circuit including generating a clock rate control parameter from integrated circuit configuration
Systems and methods for controlling clock rates of circuits are provided. The systems and methods, collectively referred to as clock rate control, generate a clock rate control parameter from data of one or more fuses. The clock rate control detects any overclocked ...
03/11/2008
7339442Baseband RC filter pole and on-chip current tracking system
An apparatus and method are provided for tracking the poles of an integrated RC filter as well as the absolute value of a current source. A single tracking oscillator contains integrated elements such as a programmable resistor and fixed capacitor or a programmable ...
03/04/2008
7336135Oscillator and semiconductor device
An oscillator for ensuring the phase relationship between two resonant circuits coupled by a coupling circuit. A first resonant circuit outputs two signals having different phases, and a second resonant circuit outputs two signals having different phases. The coupli...
02/26/2008
7321735Optical down-converter using universal frequency translation technology
A method and system for converting an optical signal to electrical information signals, including demodulated baseband information signals and modulated baseband signals at multiple harmonics. In an embodiment, the optical information signal is amplitude modulated w...
01/22/2008
7315220Voltage controlled oscillator
A voltage controlled oscillator (VCO) having a single stage ring-oscillator having both coarse and fine control of the frequency of oscillation is described. In an embodiment the VCO may include a first n-channel latch having a first output and a second output; a fi...
01/01/2008
7301349Array sensor electronics
Circuits and methods for detecting and amplifying sensor and sensor array (102, 104) output signals are presented. According to some aspects, a nonlinear feedback loop containing a sensor element provides a nonlinear transformation that compensates for a corr...
11/27/2007
7295081Time delay oscillator for integrated circuits
One aspect relates to an oscillator, and various oscillator embodiments comprise an amplifier and line driver with an input and an output and a transmission line with a predetermined transmission signal time delay. The output is adapted to produce an inverted signal...
11/13/2007
7295826Integrated frequency translation and selectivity with gain control functionality, and applications thereof
Methods and apparatuses for frequency selectivity and frequency translation, and applications for such methods and apparatuses, are described herein. The method includes steps of filtering an input signal, and down-converting the filtered input signal. The filtering...
11/13/2007
7292835Wireless 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 up-conversion, enhanced signal reception, unified down-conversion and fil...
11/06/2007
7286022Resistor-capacitor (RC) oscillator insensitive to process, voltage, and temperature variances
There is provided a resistor-capacitor (RC) oscillator circuit insensitive to process, voltage, and temperature variances. The RC oscillator circuit includes a delay unit, a resistor unit, a capacitor, a resistor, and a first controller. The delay unit delays and ou...
10/23/2007
7271670CR oscillation circuit
A CR oscillation circuit comprises first and second logic elements, a capacitive element, and a resistive element. The first logic element is connected between a first node and a second node. The second logic element is connected between the second node and a third ...
09/18/2007
7251734Secure integrated circuit including parts having a confidential nature and method for operating the same
The secure integrated circuit (1) further includes storage means (2) in which confidential data is stored, such as an encryption programme and at least an encryption key, and a microprocessor unit (3) for executing the encryption programme. Said...
07/31/2007
7230503Imbalanced differential circuit control
A differential circuit includes first and second side circuits which are coupled to receive control signals in such a way as to introduce an intentional imbalance in the differential circuit for certain benefits discussed herein. An exemplary pseudo-differential LC ...
06/12/2007
7230458Delta/sigma frequency discriminator
Delta/sigma frequency discriminator (1) for converting a frequency (Fv) of an input signal into a digital output signal (C) comprising a frequency divider (8) which divides the input signal at a frequency dividing ratio which can be switched...
06/12/2007
7222055High bandwidth real-time oscilloscope
A method and apparatus for digitizing a signal. The method comprises the steps of receiving an input analog signal, splitting the received input analog signal into a plurality of signals and frequency converting at least one of the signals in accordance with a prede...
05/22/2007
7205857Oscillator with quadrature output in a cross-coupled configuration
An oscillator that provides a quadrature output and has a cross-coupled configuration is disclosed. The oscillator generates an output signal having a frequency. Two phase shift circuits, or stages, are activated by a control signal to provide phase shifts within th...
04/17/2007
7202753Oscillation circuit and radio communication device using the same
An power divider and a surface acoustic wave resonator are provided to a feedback path of an amplifier for oscillation. The surface acoustic wave resonator connects an input side of the amplifier and the power divider connects an output side of the amplifier so as t...
04/10/2007
7199676Frequency adjustment circuit
A frequency adjustment circuit that maintains a target frequency even when frequency adjustment data of zapping circuit is changed by an external noise is offered. The frequency adjustment circuit includes a reset signal generation circuit, a frequency adjustment da...
04/03/2007
7170357Crystal oscillator with wide tuning range
A crystal oscillator having a crystal filter with multiple crystals in a ladder configuration, resonant at a desired operating frequency. An oscillatory signal loop feedback path includes a voltage controlled phase shifter operable to shift the phase of the signal i...
01/30/2007
7164324CMOS single-ended frequency doubler
A CMOS single-ended frequency doubler with improved subharmonic rejection and low phase noise which allows a single ended reference signal to be utilized in a Balanced Colpitts oscillator. The input is reproduced with a 180-degree phase shift for the opposite Colpit...
01/16/2007
7161439Oscillator delay stage with active inductor
According to some embodiments, a circuit includes a ring oscillator delay stage. The delay stage may include a first transistor, a second transistor, and an active inductor. A gate of the first transistor may receive a first input signal, a gate of the second transi...
01/09/2007
7157982Wien-Robinson oscillator with stabilized output voltage
In a Wien-Robinson oscillator, a negative feedback path and a positive feedback path are arranged between the output of an operational amplifier and a reference ground potential. The negative feedback path contains two resistors which are connected in series and who...
01/02/2007
7151415Injection locked dual opto-electronic oscillator
An injection locked dual opto-electronic oscillator having a master oscillator which generates a high Q RF output signal with a plurality of harmonic signals within a predetermined pass band. A slave oscillator has a modulation input coupled to the output signal fro...
12/19/2006
7146140Quadrature oscillator and methods thereof
Briefly, exemplary embodiments of the invention may provide devices and methods to provide precise and/or low phase-noise quadrature oscillation signals. A quadrature oscillator in accordance with an exemplary embodiment of the invention may include, for example, a ...
12/05/2006
7139684High bandwidth real time oscilloscope
A method and apparatus for digitizing a data signal, the method comprising the steps of receiving an input analog data signal, splitting the received input analog data signal into a plurality of split signals, and mixing at least one of the split signals with a pred...
11/21/2006
7132902Oscillator circuit for EEPROM high voltage generator
A semiconductor oscillator circuit for an EEPROM high voltage charge pump utilizes a current generating means to charge a first and a second capacitor alternatively. The charging current produced by the current generating means is inversely proportional to the ambie...
11/07/2006
7129798Oscillator circuit having stable frequency
An oscillator includes first, second and third inverters (1, 2, 3) connected in series. A feedback path is connected from the output terminal of the third inverter (3) to the input terminal of the first inverter 1 through a resistor (5) w...
10/31/2006
7126432Multi-phase realigned voltage-controlled oscillator and phase-locked loop incorporating the same
A multi-phase realigned voltage-controlled oscillator (MRVCO) achieves phase realignment based on charge injection in the VCO stages with the injection amount proportional to the instantaneous phase error between the VCO output clock and a reference clock. The MRVCO...
10/24/2006
7110435Spread spectrum applications of universal frequency translation
Frequency translation and spread spectrum applications of same are described herein. Such applications include, but are not limited to, unified down-conversion and de-spreading, unified up-conversion and spreading, RAKE receivers utilizing unified down-conversion an...
09/19/2006
7110444Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations
Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA/PA module, a receiver, a transmitter, a control signal gen...
09/19/2006
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