Oscillators inventions 01/07

20070018731 - Device for setting a frequency: The present disclosure relates to a digitally controlled oscillator circuit including a resonant circuit with the following features: an oscillating element for generating an oscillation with a specific high precision frequency and a setting device that is connected to the oscillating element for modifying the oscillation frequency of the oscillating... Agent: Bell, Boyd & Lloyd, LLC

20070018732 - Method and apparatus for transceiver frequency synthesis: A method and apparatus for frequency synthesis in a transceiver are based on providing a primary frequency synthesizer configured to synthesize a receiver frequency signal from a receiver reference frequency signal, and providing an offset frequency synthesizer configured to synthesize a transmitter frequency signal from the receiver frequency signal using... Agent: Coats & Bennett, PLLC

20070018734 - Method and apparatus for stabilizing output frequency of pll (phase lock loop) and phase lock loop thereof: A method and an apparatus for stabilizing output from a Phase Lock Loop (PLL) and the PLL thereof is disclosed. The method mainly relates to enabling the control voltage of a voltage control oscillator VCO in the PLL remained unchanged by means of turning off a charge-discharge current source of... Agent: Jianq Chyun Intellectual Property Office

20070018735 - Phase locked loop circuit: A phase locked loop circuit comprising a phase detector having a first input for receiving a first frequency signal and an output, a first filter adapted to filter the output electric signal of the phase detector, a voltage controlled oscillator adapted to generate a second frequency signal in response to... Agent: Bryan A. Santarelli Graybeal Jackson Haley LLP

20070018733 - Phase locked loop having cycle slip detector capable of compensating for errors caused by cycle slips: A phase locked loop capable of compensating for errors caused by cycle slips. The phase locked loop includes a phase detection unit for generating a phase error signal; a loop filter for filtering the phase error signal and generating a first control signal; a cycle slip detector for detecting whether... Agent: North America Intellectual Property Corporation

20070018736 - Process-insensitive self-biasing phase locked loop circuit and self-biasing method thereof: A process-insensitive self-biasing PLL circuit and self-biasing method thereof prevent deterioration of loop stability even when there is a fabrication process variation. The self-biasing PLL circuit includes a phase frequency detector, a main charge pump circuit, an auxiliary charge pump circuit, a first operational amplifier, a second operational amplifier, a... Agent: Mills & Onello LLP

20070018737 - High frequency ring oscillator with feed-forward paths: An inverting circuit comprises a first inverter in a main path having a first input and a common ouput. A second inverter receives the first input and is coupled with a first voltage controlled pass gate to the common output. A third inverter couples a second input to the common... Agent: Ibm Corp (wsm) C/o Winstead Sechrest & Minick P.C.

20070018738 - Voltage-controlled oscillator circuit and pll circuit: A differential type voltage-controlled oscillator circuit including: a plurality of VCO cells each having one pair of switching elements, the switching elements having one terminal side connected to a voltage source via a load and another terminal side connected to a common current source via a common node, the switching... Agent: Rader Fishman & Grauer PLLC

20070018740 - Flux linked lc tank circuits forming distributed clock networks: CMOS LC tank circuits and flux linkage between inductors can be used to distribute and propagate clock signals over the surface of a VLSI chip or processor. The tank circuit offers an adiabatic behavior that recycles the energy between the reactive elements and minimizes losses in a conventional sense. Flux... Agent: Thaddeus Gabara

20070018739 - Frequency adjustment techniques in coupled lc tank circuits: CMOS LC tank circuits and flux linkage between inductors can be used to distribute and propagate clock signals over the surface of a VLSI chip or μprocessor. The tank circuit offers an adiabatic behavior that recycles the energy between the reactive elements and minimizes losses in a conventional sense. Flux... Agent: Thaddeus Gabara

20070018743 - Boosted-bias tunable filter with dynamic calibration: In a signal communication device, a frequency-selective filter has at least one component that is biased by a control signal to establish a center frequency of the frequency-selective filter. A closed-loop bias generator is provided to generate the control signal and to adjust the control signal based, at least in... Agent: Shemwell Mahamedi LLP

20070018741 - Mutual inductance in transformer based tank circuitry: Placing inductors or resistors in parallel causes the combined value of inductance or resistance to decrease according to the parallel combination rule. This invention decreases the parasitic resistance of an inductor by placing several inductors in parallel. Furthermore, by careful placement of these inductors, the mutual inductance between these inductors... Agent: Thaddeus Gabara

20070018742 - Noise tolerant voltage controlled oscillator: A noise tolerant voltage controlled oscillator is described. The voltage controlled oscillator include a varactor element as part of an LC tank circuit. The varactor element is biased by a bias signal and a bias-dependent control signal. The bias-dependent control signal tunes the LC tank circuit. Because the control signal... Agent: Mcdonnell Boehnen Hulbert & Berghoff LLP

20070018744 - Variable matching circuit, variable resonance circuit, variable phase-shifting circuit and variable attenuation circuit each having variable-capacitance capacitor: In a variable matching circuit including an impedance device and a variable-capacitance capacitor, the variable-capacitance capacitor is formed in a manner that a plurality of variable-capacitance devices using thin film dielectric layers whose dielectric constants change depending on applied voltages are connected to each other in parallel regarding a direct... Agent: Hogan & Hartson L.L.P.

20070018745 - Establishing a tuning signal window for use in centering a multi-band voltage controlled oscillator: A technique for establishing a tuning signal window for a multi-band VCO involves setting the tuning signal window to an initial size, preferably a relatively small size, and determining whether the VCO is churning. When the VCO is determined to be churning, the tuning signal window is expanded until the... Agent: Agilent Technologies Inc.

20070018746 - Auto-gain controlled digital phase-locked loop and method thereof: A digital PLL system includes a first multiplier coupled to a phase difference signal for multiplying the phase difference signal by a first gain factor; a second multiplier coupled to the phase difference signal for multiplying the phase difference signal by a second gain factor; a digital loop filter coupled... Agent: North America Intellectual Property Corporation

20070018747 - Apparatus and method for phase lock loop gain control: A gain compensator compensates for the gain variation of a varactor-tuned voltage tuned oscillator (VCO) in a phase lock loop (PLL). The VCO includes a parallel LC circuit having multiple fixed capacitors that can be switched-in or switched-out of the LC circuit according to a capacitor control signal to perform... Agent: Mcandrews Held & Malloy, Ltd

20070013448 - Charge pump circuit: While a charge pump activation/deactivation control circuit is outputting a high level signal, MOS transistors for short-circuiting a flying capacitor are off, and the charge pump circuit operates normally. When the charge pump activation/deactivation control circuit outputs a low level signal, the MOS transistors for short-circuiting the flying capacitor are... Agent: Stevens, Davis, Miller & Mosher, LLP

20070013451 - Circuits for use in radio communications: A frequency synthesiser circuit for use in wireless communications including a phase locked loop including a VCO (voltage controlled oscillator), wherein the synthesiser circuit includes a further oscillator which in operation is a free running oscillator at a frequency higher than the VCO and a mixer connected to receive input... Agent: Motorola, Inc Intellectual Property Section

20070013446 - Methods and apparatus for loop bandwidth control for a phase-locked loop: A method for controlling loop bandwidth of a phase locked loop is described. The method includes setting the loop bandwidth to a value, calculating at least one of a phase error and a frequency change that occur subsequent to any setting or adjusting of loop bandwidth, and adjusting the loop... Agent: Dean D. Small Armstrong Teasdale LLP

20070013449 - Oscillation device and controlling method therefor: An oscillation device includes a reference oscillation unit for generating an oscillating signal of a specific frequency; a voltage-controlled oscillation unit for generating a output oscillation signal whose frequency is dependent on a control voltage; a phase comparing unit for detecting a phase difference based on the oscillating signal and... Agent: Bacon & Thomas, PLLC

20070013450 - Phase detector for reducing noise: The present invention provides a method and an apparatus for reducing noise. The apparatus includes a phase detector adapted to determine a phase difference between a first and a second signal, a first circuit adapted to generate a control signal based upon the determined phase difference, and a second circuit.... Agent: Williams, Morgan & Amerson

20070013447 - Two-point modulation type phase modulation apparatus, polar modulation transmission apparatus, wireless transmission apparatus and wireless communication apparatus: There provides a two-point modulation phase modulation apparatus capable of obtaining an RF phase modulation signal of superior modulation precision with low power consumption and a simple configuration even in the event of inputting a wide band baseband modulation signal. A differentiator (21) of the opposite characteristics to the attenuation... Agent: Stevens, Davis, Miller & Mosher, LLP

20070013453 - Circuits and methods for a ring oscillator with adjustable delay and/or resonator tank stage: Circuits and methods for generating an oscillator output. The circuit generally includes a ring oscillator, with a series of inverters connected in series and an LC resonator tank (or a variable resistance) coupled to the input and output of the inverter series. The method generally includes the steps of applying... Agent: Epson Research And Development Inc Intellectual Property Dept

20070013452 - Methods and apparatus for measuring change in performance of ring oscillator circuit: An integrated circuit device is provided having one or more pairs of ring oscillator circuits. Each ring oscillator circuit of the one or more pairs of ring oscillator circuits is configured to connect to at least one voltage source capable of applying a stress to a ring oscillator circuit. One... Agent: Ryan, Mason & Lewis, LLP

20070013454 - Ring oscillator with constant 50% duty cycle and ground-noise insensitive: The output of a suitable stage is selected so that a digital XOR-gate, using the output of a selected stage and the output of the nth stage, eliminates variations of the duty cycle caused by temperature and process variations. In case a 50% duty cycle is desired the stage number... Agent: George O. Saile

20070013455 - Voltage-controlled oscillator with multi-phase realignment of asymmetric stages: A multi-phase realigned voltage-controlled oscillator (MRVCO) achieves phase realignment based on charge injection in the VCO stages. The individual VCO stages provide an oscillating output signals having an asymmetric waveform with substantially different rise and fall times. This ensures that the VCO as a whole has a multiphase impulse response... Agent: Schneck & Schneck

20070013456 - Voltage controlled oscillator having automatic amplitude control function: In a voltage controlled oscillator, a voltage controlled oscillating part includes a resonance circuit, a differential amplifying circuit and an active load. The resonance circuit generates a resonance signal. The differential amplifying circuit feeds back the resonance signal from the resonance circuit and outputs two oscillation signals having a phase... Agent: Lowe Hauptman Berner, LLP

20070008040 - Digital phase locked loop, method for controlling a digital phase locked loop and method for generating an oscillator signal: A digital phase locked loop includes a digital phase detector, a downstream digital filter and an oscillator. In addition, a frequency divider resides in a feedback path and has an actuating input for setting a divider ratio, the input of which is connected to the oscillator and the phase detector.... Agent: Eschweiler & Associates, LLC National City Bank Building

20070008041 - Layout for a time base: Time base including two oscillators, one of which has a lower frequency than the other, the latter being intermittently set to standby mode, generating according to the same intermittency a first stable time reference (REF) by difference between the frequencies of the two oscillators, a second permanent time reference (RTC)... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20070008042 - Oscillator circuit and method for adjusting oscillation frequency of same: An oscillator comprises a data storage unit, an oscillation unit, and a control unit. The data storage unit is adapted to store a plurality of reference condition codes and a plurality of reference control codes. The oscillation unit is adapted to output an oscillation signal having an oscillation frequency that... Agent: Volentine Francos, & Whitt PLLC

20070008043 - Delay cell for ring oscillator: A delay cell for use in a voltage controlled oscillator includes a differential amplifier having a pair of outputs, a common source resistive element supplying current to said differential amplifier, a varactor arrangement between the outputs having a control input, and a pair of load resistive elements connected to the... Agent: Marks & Clerk

20070008044 - Test circuit, delay circuit, clock generating circuit, and image sensor: A test circuit comprises a delay circuit 11 with controllable delay, a phase comparator circuit 12 for comparing the phases between the clock signal S0 and a delay clock signal S1 delayed from the clock signal S0 by the delay circuit 11, a meas counter 13 for counting the number... Agent: Nixon & Vanderhye, PC

20070008045 - Discharge lamp stabilization system: An RF-discharge lamp stabilization system for preferred use in a Rubidium atomic clock, senses acoustic oscillations of plasma ions in the 20.0 kHz range to assess the performance of the lamp for determining radio frequency parameters of the lamp while the lamp is in operation and while the performance of... Agent: Carole A. Mulchinski The Aerospace Corporation

20070008046 - Baseband 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 capacitor and fixed resistor. The programmable element... Agent: Brinks Hofer Gilson & Lione

20070008047 - Integrated 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 terminal of the first capacitor. An input of... Agent: Mcgrath, Geissler, Olds & Richardson, PLLC

20070001770 - Phase lock loop and operating method thereof: A PLL is provided, comprising a first divider, a PFD, a loop filter, a VCO, a second divider and a controller. The first divider receives a reference signal and divides the reference signal by R to obtain a divided signal. The PFD compares the divided signal and a feedback signal... Agent: Birch Stewart Kolasch & Birch

20070001771 - Oscillation circuit: An oscillation circuit comprises a ring oscillator configured to have at least an odd number of stages of inverters, and a frequency multiplier section configured to output as a multiplied output, an exclusive OR of signals taken out from the inverters at least at two stages of the ring oscillator.... Agent: C. Irvin Mcclelland Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070001772 - Method and device for stabilizing a transfer function of a digital phase locked loop: In a method for stabilizing a transfer function of a digital phase locked loop a random digital signal is fed into the phase locked loop. The phase locked loop comprises the transfer function and a phase locked loop gain which changes with time due to disturbances and the random digital... Agent: Jenkins, Wilson, Taylor & Hunt, P. A.

20070001773 - Whispering gallery oscillator: There is disclosed a whispering gallery oscillator for producing a low noise microwave output signal. The whispering gallery oscillator comprises a dielectric resonator 1 comprising paramagnetic ions 34. A pump signal 5 is coupled by a coupler 7 to the paramagnetic ions to excite 19 the paramagnetic ions 34. The... Agent: Intellecatual Property Department Dewitt Ross & Stevens, S.c.

20070001774 - Apparatus, system, and method for oscillator network with multiple parallel oscillator circuits: A system, apparatus, and method to connect an oscillator network to multiple parallel oscillator circuits. The apparatus may include multiple modules located within a platform, where each of the multiple modules includes an internal oscillator circuit and the platform includes an input port; and an oscillator network located external to... Agent: Kacvinsky LLC C/o Intellevates

20070001775 - Voltage controlled oscillator (vco) tuning: In accordance with certain described implementations, a voltage controlled oscillator (VCO) includes a VCO coarse tuning bank having multiple coarse tuning bank bits. Each coarse tuning bank bit has an associated bit capacitance. The bit capacitances of the coarse tuning bank bits may be selectively engaged using, for example, a... Agent: Lee & Hayes, PLLC C/o Portfolioip