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| Number | Title | Issue Date |
| 8188795 | Phase comparator and reproduction signal processor using the same In a synchronous reproduction signal processor, when a phase error between reproduction data and a clock is repeatedly detected such that a clock synchronized with a reproduction signal is generated based on the phase error, a filtering process unit (34) perf... | 05/29/2012 |
| 8183944 | Method and system for using a MEMS structure as a timing source A system and method is disclosed that provides a technique for generating an accurate time base for MEMS sensors and actuators which has a vibrating MEMS structure. The accurate clock is generated from the MEMS oscillations and converted to the usable range by means... | 05/22/2012 |
| 8183937 | Integrated circuit frequency generator An integrated circuit frequency generator is disclosed. In some embodiments, the frequency generator comprises an electronic oscillator configured to generate an oscillator frequency and calibration circuitry configured to periodically calibrate the electronic oscil... | 05/22/2012 |
| 8174332 | Phase lock loop pre-charging system and method A phase lock loop pre-charging system and method are described. In one embodiment, a phase lock loop pre-charge system includes a bias component for generating a pre-charge voltage, and an activation component for activating the bias component. In one exemplary impl... | 05/08/2012 |
| 8174325 | Adaptive injection-locked oscillator array for broad spectrum RF analysis The present invention provides an array of tunable, injection-locking oscillators which are scalable to higher frequencies and measure the entire relevant frequency space simultaneously. The scalable, highly-parallelized, adaptive receiver architecture uses arrays o... | 05/08/2012 |
| 8174324 | Digital phase detector, and digital phase locked loop including the same A digital phase detector includes a quantization unit that quantizes a frequency of a reference signal to generate reference delay information and reference integer phase information, and quantizes a frequency of an oscillation signal to generate oscillation delay i... | 05/08/2012 |
| 8174327 | Method and system for configuration of a phase-locked loop circuit Example embodiments are directed toward configuration of a phase lock loop (PLL) circuits for low power operation. In particular embodiments, a fraction related to a desired gain of a PLL circuit is determined. A set of possible frequency-divider values and a set of... | 05/08/2012 |
| 8169271 | Interference resistant local oscillator With some embodiments, a VCO (voltage controlled oscillator) operates at an integer multiple (N) above a desired transmission frequency. In accordance with one embodiment, a chip is provided with a VCO to generate a signal and a frequency dividing circuit to provide... | 05/01/2012 |
| 8159307 | Logical element In a logical element, supporting portions, and a beam supported by them at two ends are formed. The beam has a back side surface spaced apart from the top side surface of a substrate, creating a space between the facing surfaces of the beam and substrate. An excitat... | 04/17/2012 |
| 8154354 | Nonlinear pulse oscillator methods and apparatus Methods and apparatus for implementing stable self-starting and self-sustaining high-speed electrical nonlinear pulse (e.g., soliton, cnoidal wave, or quasi-soliton) oscillators. Chip-scale nonlinear pulse oscillator devices may be fabricated using III-V semiconduct... | 04/10/2012 |
| 8154350 | PLL with continuous and bang-bang feedback controls An apparatus is provided. The apparatus comprising a voltage controlled oscillator (VCO), an amplifier, a switch, a calibration capacitor, and a control loop. The VCO includes a capacitive network that receives a first tuning voltage that is based at least in part o... | 04/10/2012 |
| 8154349 | Atomic clock regulated by a static field and two oscillating fields An atomic clock including a mechanism applying both a static magnetic field and two oscillating magnetic fields, all mutually perpendicular, in a magnetic shield. The amplitudes and frequencies of the oscillating magnetic fields may be chosen so as to annihilate ene... | 04/10/2012 |
| 8149069 | Low-noise voltage-controlled oscillating circuit A low noise voltage-controlled oscillating circuit which can remove a power source noise to improve low frequency noise characteristics is disclosed. A capacitor C11 is provided between a base of a driving transistor Q1 and GND, whereby a low frequency... | 04/03/2012 |
| 8149066 | Integrated circuit distributed oscillator An integrated circuit distributed radio frequency oscillator comprises a semiconductor chip which includes a differential input transmission line, a differential output transmission line and, coupled in parallel between these transmission lines at spaced apart porti... | 04/03/2012 |
| 8143955 | Oscillator circuit for radio frequency transceivers Oscillator circuit for radio frequency transceivers. An oscillator circuit includes a first oscillator that generates a signal having a first frequency and a second oscillator that generates a signal having a second frequency. The oscillator circuit includes a mixer... | 03/27/2012 |
| 8143954 | Oscillation device with auxiliary oscillating means A device can be coupled to an electrical load for supplying electrical power to the electrical load. The device contains an oscillator unit and an auxiliary oscillator unit. The oscillator unit is configured to generate an output signal of the device which can be su... | 03/27/2012 |
| 8138840 | Optimal dithering of a digitally controlled oscillator with clock dithering for gain and bandwidth control A digital phase locked loop (DPLL) and method include an adjustable delay line configured to receive a reference clock as an input and to output a dithered reference clock signal. A phase and frequency detector (PFD) is configured to compare the dithered reference c... | 03/20/2012 |
| 8138842 | PLL frequency synthesizer A frequency synthesizer includes a voltage-controlled oscillator, a frequency range tuning circuit which detects a frequency control code that sets a voltage-controlled frequency range of the voltage-controlled oscillator corresponding to the frequency division rati... | 03/20/2012 |
| 8134413 | Low-power oscillator Techniques for synthesizing a signal having a desired frequency from an oscillation signal. In an aspect, a reference signal having a known frequency may be periodically used to determine a ratio between the desired frequency and the frequency of the oscillation sig... | 03/13/2012 |
| 8135191 | Method and device for automatically detecting collimation edges A method for automatically detecting a collimation edge or region includes reading an image captured by an X-ray imaging system, detecting intersection points between a foreground and a background and between a foreground and a tissue on the X-ray image, and perform... | 03/13/2012 |
| 8130045 | Digital self excited loop A process that provides the ability to incorporate a self exciting loop (SEL) algorithm into a digital LLRF system. The present digital SEL provides for conversion from the Cartesian domain to the Polar domain, wherein most signal processing is accomplished, and bac... | 03/06/2012 |
| 8130047 | Open loop coarse tuning for a PLL In many types of wireless applications (like wireless modems), it is important that the phase locked loops (PLLs) be able to synthesize clock frequencies in a wide tuning range. Because of the complexity of many conventional PLLs (which were deigned to cover wide tu... | 03/06/2012 |
| 8130048 | Local oscillator Equal numbers of variable capacitance elements, capacitance values of which are separately controlled according to a logic value of a corresponding bit of a delay control signal that is in a one-to-one relation with an oscillation frequency, are connected in paralle... | 03/06/2012 |
| 8130044 | Phase-locked loop circuitry with multiple voltage-controlled oscillators Configurable phase-locked loop circuitry is provided. The phase-locked loop circuitry may include a buffer having a buffer output and a multiplexer having inputs and an output. The phase-locked loop circuitry may include multiple voltage-controlled oscillators. The ... | 03/06/2012 |
| 8125278 | Clock regeneration apparatus and electric equipment Disclosed herein is a clock regeneration apparatus, including: an oscillator including n (an integer of two or more) gating groups connected in cascade connection to each other forming an oscillation loop, the gating groups being controlled to gate an internal clock... | 02/28/2012 |
| 8125285 | Digitally controlled oscillators The problems of large oscillator signal frequency change per bit, small runtime tuning bandwidth, and large wiring layout (and therefore large integrated circuit (IC) layout) in digitally-controlled oscillators are addressed by using an array of addressable tuning u... | 02/28/2012 |
| 8125277 | Dual loop frequency synthesizer A frequency synthesizer has a fractional N1 loop and an integer N2 loop. The output frequency of the signal of the fractional N1 loop is constrained to values between adjacent harmonics of a reference frequency used in the fractional... | 02/28/2012 |
| 8125280 | Method for regulating an excited oscillation In a method for regulating an excited oscillation of a system to a resonance case of the system, instantaneous values of the oscillating quantity are discretely recorded using one sampling frequency, and the sampling frequency is selected to be below twice a maximum... | 02/28/2012 |
| 8120435 | PLL circuit and semiconductor device having the same A PLL circuit includes a phase detector, a loop filter (LF), a voltage-controlled oscillator (VCO), and a frequency divider. The phase detector compares a phase of a signal Fs which is input from outside with a phase of a signal Fo/N which is input from the frequenc... | 02/21/2012 |
| 8120437 | Oscillator with little deterioration capable of outputting clock pulses with target frequency An oscillator includes: a vibrator having a first electrode and a second electrode disposed with a gap with the first electrode; a reference voltage supply circuit adapted to supply a reference voltage; and a voltage adjustment circuit having a step-up circuit opera... | 02/21/2012 |
| 8120433 | Multi-output oscillator using single oscillator Provided are a multi-output oscillator using a single oscillator, and a method of generating multiple outputs. The multi-output oscillator includes: an oscillator outputting the single frequency; a multiplier multiplying the single frequency to output a first freque... | 02/21/2012 |
| 8120431 | Variable loop bandwidth phase locked loop An apparatus comprising a voltage controlled oscillator, a first charge pump, a second charge pump, a switch circuit and a comparator circuit. The voltage controlled oscillator may be configured to generate an output signal oscillating at a first frequency in respon... | 02/21/2012 |
| 8120440 | Voltage controlled oscillator (VCO) with simultaneous switching of frequency band, oscillation core and varactor size The invention relates to a voltage controlled oscillator for generating a variable frequency. The oscillator comprises an oscillator core and a transconductive portion for compensating current losses in the oscillator core. The oscillator core comprises an inductive... | 02/21/2012 |
| 8115562 | Oscillation circuit and method of controlling same Disclosed is an oscillator in which current consumption relating to oscillation is reduced. The oscillator comprises: an amplifier to an input and output of which a piezoelectric oscillator and a feedback resistor are connected in parallel, and which is constituted ... | 02/14/2012 |
| 8115556 | Resonant device with improved features The device resonant comprises a plurality of synchronized oscillators. Each oscillator comprises a resonator which comprises detection means providing detection signals representative of oscillation of the resonator to a feedback loop connected to an excitation inpu... | 02/14/2012 |
| 8111110 | Low-noise voltage controlled oscillator A low-noise voltage controlled oscillator is provided, to improve a phase noise characteristic and widen a frequency variable range. The low-noise voltage controlled oscillator is configured so that an oscillation element and a capacitor 2 are connected in se... | 02/07/2012 |
| 8098109 | Differential varactor circuit for a voltage controlled oscillator According to one exemplary embodiment, a differential varactor circuit for a voltage controlled oscillator having two differential outputs includes a first varactor having first and second terminals and a second varactor having first and second terminals. In the dif... | 01/17/2012 |
| 8098107 | Voltage/current regulator system using constant loop gain A system for providing voltage and current regulator sources based on a oscillator having variable loop gain is described. Only when the oscillator loop gain is at least the value of one does the oscillator oscillate. The oscillator's ability to oscillate is control... | 01/17/2012 |
| 8089325 | Oven controlled multistage crystal oscillator An object of the invention is to provide an oven controlled crystal oscillator that prevents a reduction in characteristics due to temperature rise in the crystal vibrator and circuit elements other than the oscillating stage, and that increases energy efficiency of... | 01/03/2012 |
| 8089326 | PVT-independent current-controlled oscillator The invention discloses a PVT-independent current-controlled oscillator, including a PV-controller, a current-controlled oscillator and a T-controller. The current-controlled oscillator is coupled to the PV-controller and outputs an oscillation frequency. The T-cont... | 01/03/2012 |
