Oscillators inventions 04/07

20070090881 - Circuit to reset a phase locked loop after a loss of lock: A system and method for generating a reset signal within a Phase Locked Loop (PLL) circuit is described. The reset signal is generated by inputting a reference signal and a lock detect signal into reset circuitry. The reset circuitry within the PLL comprises a series of interconnected latches, or D... Agent: Honeywell International Inc.

20070090883 - Auto-adjusting high accuracy oscillator: An auto-adjusting high accuracy oscillator is disclosed, which comprises: a frequency comparator, for comparing a synchronization signal obtained from a USB host with an oscillation signal obtain from a device; a control tuning circuit, further comprising a counter and an adder/sub circuit; and an oscillating element; wherein a variation is... Agent: Bruce H. Troxell

20070090885 - Charge pump circuit and phase-locked loop circuit: A first current source for sinking electrical current, a first differential circuit for switching the electrical current of the first current source according to an input signal, a second current source for sourcing electrical current, a second differential circuit for switching the electrical current of the second current source according... Agent: Hamre, Schumann, Mueller & Larson P.C.

20070090884 - Method, system and apparatus for reducing oscillator frequency spiking during oscillator frequency adjustment: Current sources are selectively coupled to a current controlled frequency determining circuit of an oscillator. A buffer amplifier has an input coupled to the current controlled frequency determining circuit of the oscillator and the buffer amplifier output is selectively coupled to the current sources not coupled to the frequency determining... Agent: Baker Botts, LLP

20070090882 - Phase locked loop filter: A phase locked loop filter comprising a first capacitor for connecting to a first charge pump path; and a parallel resistor/capacitor circuit for connecting to a second charge pump path with the resistor/capacitor circuit having a second capacitor; wherein the first capacitor and second capacitor are connected in series to... Agent: Freescale Semiconductor, Inc. Law Department

20070090887 - Lock detect circuit for a phase locked loop: An improved system and method for determining the lock condition of a Phase Locked Loop (PLL) is described. The lock detect circuit generates a fast lock detect signal that may be used to detect a transient loss of lock. The lock detect circuit may also include a phase alignment detect... Agent: Honeywell International Inc.

20070090886 - Radiation hardened phase locked loop: A method and apparatus for providing a radiation hardened Phase Locked Loop (PLL) are presented. The radiation hardened PLL includes an adjustable bandwidth loop filter. The adjustable filter modifies an unfiltered voltage control signal and provides a stable voltage control signal to a Voltage Controlled Oscillator (VCO) during detected radiation... Agent: Honeywell International Inc.

20070090888 - Method and/or apparatus for implementing a voltage controlled ring oscillator having a multi-peak detected amplitude control loop: An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to generate an output signal oscillating at a first frequency in response to (i) a first control signal, and (ii) a second control signal. The second circuit may be configured to generate the second... Agent: Lsi Logic Corporation

20070090889 - High frequency colpitts oscillation circuit: A high frequency Colpitts oscillation circuit, comprises: a Colpitts oscillation circuit; and a collector grounded amplifier circuit, wherein an output terminal of the Colpitts oscillation circuit is coupled to an input terminal of the collector grounded amplifier circuit, and an output terminal of the collector grounded amplifier circuit is coupled... Agent: Harness, Dickey & Pierce, P.L.C

20070090891 - Power supply compensated voltage and current supply: An apparatus and method for providing a power supply compensted voltage or current is presented. A supply compensated current and voltage source utilizes a differential amplifier connected to a bandgap reference voltage and a scaled power supply voltage. When power supply varies, the differential amplifier regulates a stable compensated output.... Agent: Honeywell International Inc.

20070090890 - Voltage-controlled oscillator with stable gain over a wide frequency range: An apparatus and method for providing a stable gain over wide frequency range in a VCO are presented. A VCO uses a waveform generator along with a bias generator having a frequency select input. The frequency select input is used to adjust the amount of output current and/or gain of... Agent: Honeywell International Inc.

20070085610 - Phase locked loop circuit: A phase locked loop circuit (PLL) has a reference terminal for receiving a reference signal and an output terminal for providing an output signal. The PLL comprises a phase comparator having first and second inputs and having an output at which it provides a signal that depends on phase difference... Agent: Smith-hill And Bedell, P.C.

20070085612 - Synthesizer: A synthesizer that has a phase detector 8 and a charge pump circuit 9 for injecting an electric charge, or pulling it out that corresponded to a frequency difference of an input, a low-pass filter 11 for converting this electric charge into a voltage, a voltage control oscillator (VCO) 13... Agent: Sughrue Mion, PLLC

20070085611 - Ultrasound medical devices, systems and methods: Ultrasound medical devices, systems and methods are described.... Agent: Fish & Richardson PC

20070085613 - Resonant circuit and oscillator having a resonant circuit: The invention is directed to a resonant circuit having a frequency-determining element which has at least one switchable frequency-changing element connected in parallel therewith. The frequency-changing element has two series-connected transistors whose control connections are connected to a node that receives a fixed potential. First connections of the two series-connected... Agent: Eschweiler & Associates, LLC National City Bank Building

20070085614 - Methods of enabling or disabling ultrasound vibration devices of ultrasound medical devices: Methods of enabling or disabling ultrasound vibration devices of ultrasound medical devices are described.... Agent: Fish & Richardson PC

20070085615 - Tuning fork shaped crystal oscillator and method of fabrication thereof: The present invention provides a tuning fork shaped oscillator, an angular velocity sensor element, and an angular velocity sensor with improved breaking strength with respect to CI and drive power, CI stability, and frequency stability. The present invention relates to a tuning fork shaped crystal oscillator of a configuration wherein... Agent: Edwards & Angell, LLP

20070085616 - A method for steering an oscillator and an oscillator: A method to control a frequency oscillator, as a crystal oscillator, and to form an oscillating circuit in order to produce a frequency oscillator improved to its qualities, in which the frequency of reference oscillator (1) is changed by means of frequency multiplier (2) into output frequency. As frequency oscillator... Agent: Stites & Harbison PLLC

20070085617 - Amplifier arrangement for ultra-wideband applications and method: An amplifier arrangement for ultra-wideband, UWB, applications and. a method to amplify a UWB signal are presented. A transistor, whose control input forms an input of the arrangement, is connected to a resonant circuit having a controllable resonator frequency. At the resonator circuit, an output of the arrangement is formed.... Agent: Eschweiler & Associates, LLC National City Bank Building

20070085618 - Microwave generator: In order to make it possible to direct sufficient microwave energy at a target with an electronic device which is to be interfered with or to be destroyed, the beams (7) from at least two antenna arrays (10) are focused on an effective area (8) in the vicinity of that... Agent: Leopold Presser, Scully, Scott, Murphy & Presser

20070085621 - Apparatus and method for acquisition and tracking bank cooperation in a digitally controlled oscillator: A novel apparatus for and method of acquisition and tracking bank cooperation in a digitally controlled oscillator (DCO) within an all digital phase locked loop (ADPLL). The acquisition bits of the acquisition bank are used as an extension of the modulation range. The PLL and TX tuning data are broken... Agent: Texas Instruments Incorporated

20070085620 - Semiconductor integrated circuit device: A voltage-controlled oscillator operates stably over a narrow variation range of a control voltage, including a variable capacitance circuit 12 controllable by voltage, an inductor circuit 11 having inductors, a negative resistance circuit 13, and a capacitance control circuit 14 that outputs a correction voltage. An oscillator circuit is constituted... Agent: Mcginn Intellectual Property Law Group, PLLC

20070085619 - Voltage-controlled oscillator, associated temperature detecting unit, and integrated circuit: A voltage-controlled oscillator, associated temperature detecting unit, and integrated circuit is disclosed. The voltage-controlled oscillator comprises a frequency drift compensation unit, which compensates for a frequency drift of the oscillator and supplies a compensation signal to a component having a voltage-controlled capacitance.... Agent: Mcgrath, Geissler, Olds & Richardson, PLLC

20070085622 - Continuous reversible gear shifting mechanism: A novel gear shifting mechanism operative to adjust the loop gain of a phase locked loop (PLL) circuit in a continuous and reversible manner. The loop gain can be increased to widen the bandwidth of the loop and can also be decreased to narrow the loop bandwidth. The mechanism incorporates... Agent: Texas Instruments Incorporated

20070085623 - Gain normalization of a digitally controlled oscillator in an all digital phase locked loop based transmitter: A novel mechanism for gain normalization of a digitally controlled oscillator (DCO) in an all digital phase locked loop (ADPLL)-based transmitter that is operative to split the gain normalization multiplication functionality between a modulating path and a PLL loop. The gain normalization of the modulation loop (referred to as modulation... Agent: Texas Instruments Incorporated

20070085624 - Voltage controlled oscillator having digitally controlled phase adjustment and method therefor: A VCO has a plurality of MIGFETs coupled to provide phase adjustment in response to receiving digital phase adjustment control signals. The VCO includes a ring oscillator implemented as a plurality of serially coupled inverters. A phase adjustment circuit is coupled to the output of each inverter. The phase adjustment... Agent: Freescale Semiconductor, Inc. Law Department

20070080752 - Apparatus for low noise and jitter injection in test applications: A method and apparatus for a low noise low jitter signal source is provided. A Voltage Controlled Oscillator (VCO) is configured as part of a phase locked Loop (PLL) with a reference clock, a loop filter and a method of offsetting the Tune Voltage input to the Voltage Controlled Oscillator... Agent: Stephen W. Smith

20070080751 - Calibration circuit and operation method for voltage-controlled oscillator: A calibration circuit for voltage-controlled oscillator (VCO) includes a calibration bias generator, a VCO, a detection unit, a micro control unit, an adjuster unit, a phase-locked loop (PLL) unit, a control voltage detection unit, and a control switch set. The calibration bias generator outputs a first control voltage. The VCO... Agent: Jianq Chyun Intellectual Property Office

20070080753 - Voltage controlled oscillator, pll circuit, pulse modulation signal generating circuit, semiconductor laser modulation device and image forming apparatus: An oscillation frequency control part includes a voltage-to-current converting circuit converting an input voltage to a current having a value corresponding to the input voltage, and outputting a current in proportion to the current obtained from the voltage-to-current converting circuit. An oscillating circuit part includes a ring oscillator, wherein a... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070080754 - Voltage controlled oscillator with body bias control: In a voltage controlled oscillator, a resonant circuit generates a resonant frequency in response to a tuning voltage. A differential oscillator includes first and second transistors differentially cross-coupled to the resonant circuit. The first and second transistors supply energy to the resonant circuit to oscillate the resonant frequency from the... Agent: Lowe Hauptman Berner, LLP

20070075785 - Phase locked loop and method for adjusting the frequency and phase in the phase locked loop: A phase locked loop (PLL) which includes a phase frequency detector coupled with a time to digital converter capable of comparing a reference signal with an oscillator signal and generating a digital value representing the phase difference between the reference signal and the oscillator signal. The PLL further includes a... Agent: Ido Tuchman

20070075786 - Suppressing noise in a frequency synthesizer: A frequency synthesizer includes analog components and digital components. The frequency synthesizer includes at least one shunt regulator that is coupled to a supply rail to provide power to at least one of the digital components. The frequency synthesizer also includes at least one series regulator that is coupled to... Agent: Trop Pruner & Hu, PC

20070075788 - Active filter in pll circuit: A low pass filter can be built in a chip by reducing the value of circuit element forming a low pass filter in a PLL circuit, especially by reducing the value of a electrostatic capacity. An active filter used in a PLL circuit having two charge pump circuits in a... Agent: Arent Fox PLLC

20070075787 - Frequency synthesizer with improved spurious performance: A loop filter for use in a frequency synthesizer provides improved spurious performance using switched capacitors. The loop filter includes a first switched capacitor having a first capacitance value and which is operable to charge to a first voltage corresponding to a current pulse indicative of a difference in phase... Agent: Garlick Harrison & Markison

20070075789 - Structure and method for providing gate leakage isolation locally within analog circuits: A loop filter for a phase-locked-loop is provided, comprising a set of capacitor banks coupled in parallel to form the loop filter, and a detection circuit for identifying and isolating defective capacitor banks. A method for providing a loop filter for a phase-locked-loop in accordance with an embodiment of the... Agent: Hoffman, Warnick & D'alessandro LLC

20070075790 - Switching regulator duty cycle control in a fixed frequency operation: 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 loop to extend the switch ON time of the clock cycle by controlling... Agent: Fish & NeaveIPGroup Ropes & Gray LLP

20070075791 - Variable-capacitance circuit element: An electronic circuit element has two capacitance values selected by means of a main control signal. The electronic circuit element comprises two variable-capacitance electronic components connected in parallel and each receiving opposite intermediate control signals, derived from the main control signal. The two variable-capacitance components are differentiated by a configuration... Agent: Seed Intellectual Property Law Group PLLC

20070075792 - Signal degradation monitoring: Provided are a method, system, and device to monitor degradation of a signal due to circuit aging. In one embodiment, a signal may be applied to a data path prior to aging of the circuit producing the signal to provide a reference value. The signal generating circuit may then be... Agent: Konrad Raynes & Victor, LLP. Attn: Int77

20070075793 - Providing a low phase noise reference clock signal: A reference clock generator includes an oscillator to generate a periodic signal, a shaping circuit and a filter. The shaping circuit shapes the periodic signal to generate a clock signal. The filter is located between the oscillator and the shaping circuit.... Agent: Trop Pruner & Hu, PC

20070075794 - Method and system for operating an atomic clock with simultaneous control of frequency and magnetic field: The present invention relates to a method and system in which multi-coherent resonances of a microwave in which the alkali-metal atoms in the ground state are driven simultaneously by a microwave hyperfine frequency ΩH and a Zeeman frequency ΩZ. The driving influences on the atom can include magnetic fields or... Agent: Mathews, Shepherd, Mckay, & Bruneau, P.A.

20070075797 - Method of manufacturing crystal oscillator and the crystal oscillator manufactured by the method: The method of manufacturing a crystal oscillator that is compensated for temperature with low-cost, and a crystal oscillator that is compensated for temperature by the method is disclosed. A plurality of crystal oscillators are manufactured by preparing a compensation circuit that generates a common compensation voltage in accordance with a... Agent: Oliff & Berridge, PLC

20070075795 - Surface mount type crystal oscillator: A surface mount type crystal oscillator is provided with a crystal blank, an IC chip which incorporates an oscillation circuit using the crystal blank, a substantially rectangular parallelepiped container body for surface mounting which houses the crystal blank and the IC chip, and mounting electrodes provided in four corners of... Agent: Fitch, Even, Tabin & Flannery

20070075796 - Surface mount type temperature-compensated crystal oscillator: A surface mount type temperature-compensated crystal oscillator includes a crystal blank; an IC chip integrating an oscillation circuit using the crystal blank and a temperature compensation mechanism of compensating frequency temperature characteristics of the crystal blank; and a substantially rectangular parallelepiped container body for surface mounting having a first recess... Agent: Fitch, Even, Tabin & Flannery

20070075798 - Voltage control oscillator and voltage control oscillator unit: A voltage control oscillator that is provided to suitably receive digital broadcasting and is produced at low costs includes: a resonance circuit that includes variable capacitors, each having a capacitance controlling terminal, that are provided parallel to each other and are connected to an inductor, the circuit resonating at a... Agent: Birch Stewart Kolasch & Birch

20070075799 - Dual-band voltage controlled oscillator utilizing switched feedback technology: The present invention is related with a dual-band LC voltage controlled oscillator, which utilizes a substantial amount of feedback loop paths in the circuit. The circuit is a core of a substantial amount of communication ICs. The voltage controlled oscillator can provide wide-band or dual-band radio frequency generation, and it... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP