Oscillators inventions 05/07

20070120608 - Capacitor detection by phase shift: A method and apparatus for detecting capacitive devices are disclosed. A circuit including two circuit paths is connected to an oscillator voltage source. Connecting a test capacitive device to a path of the circuit modifies the electric potential waveform at a point along the path. Passing the first circuit path... Agent: Shumaker & Sieffert, P. A.

20070120610 - Method for reducing phase lock time and jittering and phase lock loop using the same: A method for reducing phase lock time and jittering and a phase lock loop (PLL) using the same adapted for PLL including a charge pump (CP) which includes a pull-up and a pull-down networks used for controlling output voltage of the CP. The output voltage is used for controlling frequency... Agent: Jianq Chyun Intellectual Property Office

20070120609 - Phase locked loop circuit with a voltage controlled oscillator: A phase locked loop circuit comprises a voltage controlled oscillator with a control input to which a variable control voltage is applied and a phase-frequency discriminator with an output connected to a loop filter to produce the control voltage. To provide the phase locked loop circuit with a low loop... Agent: Texas Instruments Incorporated

20070120611 - Phase frequency detector capable of improving noise characteristics: A phase frequency detector for improving in-band phase noise characteristics of a PLL is disclosed. The phase frequency detector compares a reference frequency with a division frequency created by dividing an output frequency of a voltage controlled oscillator (VCO) by a predetermined division ratio, creates a phase-difference signal corresponding to... Agent: Lowe Hauptman Berner, LLP

20070120612 - Phase lock loop indicator: A phase-locked loop (PLL) circuit includes a power-on-reset (POR) to reset a digital block and set an initial input voltage value VCTRL of voltage-controlled oscillator (VCO). An input divider and a feedback divider are provided to set the frequency ratio of output to input and to raise the resolution of... Agent: Townsend And Townsend And Crew, LLP

20070120613 - Digitally controlled oscillator: A plurality of variable load capacitance circuits is connected to each node between adjacent delay circuits of a ring oscillator, and changes load capacitance according to an external control signal. The control circuit adjusts timing the control signal is inputted to these variable load capacitance circuits, using a clock signal... Agent: Arent Fox PLLC

20070120614 - Surface mount type crystal oscillator: A surface mount crystal oscillator comprises a crystal blank, an IC chip having an oscillation circuit integrated thereon, and a hermetic package for accommodating the crystal blank and IC chip therein. The hermetic package comprises a substantially rectangular ceramic substrate formed with a metal film which makes a round on... Agent: Muirhead And Saturnelli, LLC

20070120615 - Tunable frequency, low phase noise and low thermal drift oscillator: An oscillator comprising a three-terminal device and circuitry coupled across a first terminal and a second terminal of the device. The circuitry is preferably operable to bias the device and feedback a select amount of noise generated by the device into the device so as to reduce a proportional amount... Agent: Lerner, David, Littenberg, Krumholz & Mentlik

20070120616 - Multi-band frequency generation method and apparatus: A frequency generation unit (FGU) 160 includes a plurality of selectable voltage controlled oscillators (110) whose output frequencies are chosen in relationship with a predetermined intermediate frequency (IF) and frequency divider value (N) to provide multi-band frequency generation capability in a single communication device. A programmable reference divider (104), phase... Agent: Motorola, Inc Intellectual Property Section

20070115070 - Apparatus and method for tuning center frequency of a filter: A tuning method and a tuning apparatus for tuning a filter are disclosed. The tuning method includes: configuring the filter as a VCO; utilizing the VCO to generate an oscillation signal according to a driving signal; comparing a frequency of the oscillation signal with a reference frequency to generate a... Agent: North America Intellectual Property Corporation

20070115069 - Voltage controlled oscillator with full adder: A voltage controlled oscillator includes a resonant circuit, a trimming capacitor and a full adder. The resonant circuit includes a negative resistor, an inductor and an oscillation frequency setting capacitor having a variable capacitance according to a controlled voltage based on a oscillation frequency data. The trimming capacitor is connected... Agent: Nixon Peabody, LLP

20070115071 - Diagnostic resonant cavity for a charged particle accelerator: Disclosed is a diagnostic resonant cavity for determining characteristics of a charged particle beam, such as an electron beam, produced in a charged particle accelerator. The cavity is based on resonant quadrupole-mode and higher order cavities. Enhanced shunt impedance in such cavities is obtained by the incorporation of a set... Agent: William A. Eklund

20070115072 - Oscillating device, optical deflector and optical instrument using the same: Disclosed is an oscillating device that includes an oscillating system having a plurality of oscillation movable elements, a plurality of elastically supporting portions connected to the oscillation movable elements, and a supporting member for supporting a predetermined portion of the plurality of resiliently supporting portions so that predetermined oscillation movable... Agent: Fitzpatrick Cella Harper & Scinto

20070115073 - User-definable, low cost, low phase hit and spectrally pure tunable oscillator: A tunable oscillator includes a first transistor, a second transistor connected in parallel with the first transistor, a noise feedback and bias network coupled to the first and second transistors, a planar coupled resonator network coupled to the transistors and a means for dynamically tuning the resonant frequency of the... Agent: Lerner, David, Littenberg, Krumholz & Mentlik

20070109058 - Differential amplifier, differential amplifying method, and phase locked loop and delay locked loop using the same: A differential amplifier includes an input stage, a biasing unit and a load unit. The input stage receives a first phase signal and at least two phase signals among odd-numbered phase signals, wherein an average of phases of the at least two phase signals has a phase difference of substantially... Agent: Mills & Onello LLP

20070109059 - Internal voltage generators for semiconductor memory device: An internal voltage generator capable of reducing the variation width in the level of an internal voltage VPP, by performing charge pumping only a predetermined number of times in a period where an oscillator driving signal is at a logic HIGH level, and then stopping the charge pumping operation. The... Agent: Marshall, Gerstein & Borun LLP

20070109060 - Integrated dielectric resonator filter and clock extraction device using the same: Provided are an integrated dielectric resonator filter and a clock extraction device using the integrated dielectric resonator filter. The integrated dielectric resonator filter includes: a microwave substrate; a disc type dielectric resonator installed on the microwave substrate and having predetermined diameter and height; an input and output transmission line installed... Agent: Blakely Sokoloff Taylor & Zafman

20070109061 - User-definable low cost, low noise, and phase hit insensitive multi-octave-band tunable oscillator: An aspect of the present invention is a voltage controlled oscillator that provides multi octave band tenability. The oscillator preferably includes one or more multi planar resonators which allow it to be implemented in integrated circuit form. Oscillators implemented in accordance with the aspect of the present invention provide as... Agent: Lerner, David, Littenberg, Krumholz & Mentlik

20070109063 - On-chip r-c time constant calibration: An integrated tuner includes circuitry to receive a television signal, a quadrature mixer coupled to the output of the circuitry, a polyphase filter coupled to the output of the quadrature mixer, a relaxation oscillator, and a digital calibration module. The relaxation oscillator generates a clock having a period that is... Agent: North America Intellectual Property Corporation

20070109062 - Timer circuits and method: A timing circuit operates by applying an arbitrary voltage across a resistance, and using the resulting current to generate a charging current which charges and/or discharges a capacitance to an endpoint voltage. Additional circuitry is arranged such that the capacitance is charged and/or discharged until its voltage crosses a threshold... Agent: Koppel, Patrick & Heybl

20070109064 - Piezoelectric transducer signal processing circuit: A piezoelectric detector circuit has at least one input line, a piezoelectric transducer in the input line, an amplifier receiving signals on the input line and generating an output, and one or two feedback elements through which the output is sent back to the input line. The circuit may be... Agent: Procopio, Cory, Hargreaves & Savitch LLP

20070109065 - Methods and apparatus for the reduction of local oscillator pulling in zero intermediate frequency transmitters: The “pulling” of a local oscillator in zero intermediate frequency (IF) transmitters with “on” frequency voltage controlled oscillator (VCO), is well known in the art to drastically degrade system performance of wireless transmitters. While complex solutions to the problem do exist the disclosed invention provides a less complex but rigid... Agent: Blakely Sokoloff Taylor & Zafman

20070103239 - Delta-sigma type fraction pll synthesizer: In its configuration, first and second L-value accumulators 31 and 30 are provided. The difference between overflow signals 16 and 17 of the first and the second L-value accumulators 31 and 30 is acquired by an adder 29, so that in response to an output signal of the adder 29,... Agent: Stevens, Davis, Miller & Mosher, LLP

20070103240 - Gain calibration of a digital controlled oscillator: A novel apparatus for and a method of estimating, calibrating and tracking in real-time the gain of a radio frequency (RF) digitally controlled oscillator (DCO) in an all-digital phase locked loop (ADPLL). Precise setting of the inverse DCO gain in the ADPLL modulating path allows direct wideband frequency modulation that... Agent: Texas Instruments Incorporated

20070103241 - Clock signal generating circuit, semiconductor integrated circuit and method for controlling a frequency division ratio: A clock signal generating circuit is disclosed. The clock signal generating circuit includes: a reference clock signal generating unit for generating a reference clock signal; a plurality of frequency dividing units for carrying out frequency dividing of the reference clock signal and outputting frequency-divided clock signals; a plurality of frequency... Agent: Birch Stewart Kolasch & Birch

20070103242 - Voltage controlled oscillator and related method: A voltage controlled oscillator (VCO) with improved frequency characteristics is provided. The VCO includes a converting circuit supplied between a bias voltage and a ground voltage for converting the control voltage into a control current, a replica bias circuit coupled to the converting circuit for providing a swing voltage, and... Agent: North America Intellectual Property Corporation

20070103245 - Method for calibration of an oscillator for a microcontroller chip operation: To calibrate an oscillator for microcontroller chip operation, an RC circuit is coupled to the microcontroller circuitry and a voltage signal is applied to the capacitor for changing the voltage across the capacitor. The voltage value across the capacitor is measured and compared to an expected voltage value. Adjustments to... Agent: Jenkens & Gilchrist, PC

20070103244 - Rc-oscillator circuit: An RC oscillator circuit is described in which a charge current (IPOSC1) is integrated in an integrator (1). In a comparator (7), an output voltage (VCAP) of the integrator is compared to a reference threshold (VTH). Depending on the comparison, a periodic signal is generated in a clock pulse generator... Agent: Fish & Richardson PC

20070103243 - Relaxation oscillator with propagation delay compensation for improving the linearity and maximum frequency: The present invention uses a variable reference voltage to compensate for propagation delay in a tunable oscillator caused by delays in the electronic components. The reference voltage is decreased as the control current increases and is varied in frequency to match the phase of the oscillator.... Agent: Maginot Moore & Beck Bank One Tower

20070103247 - Pll transient response control system and communication system: The present invention includes two lines of PLL circuits. The first PLL circuit 31 includes a first voltage-controlled oscillator 34 that increases in oscillation frequency as a control voltage increases. The second PLL circuit 41 includes a second voltage-controlled oscillator 44 that decreases in oscillation frequency as a control voltage... Agent: Hamre, Schumann, Mueller & Larson P.C.

20070103246 - Printed circuit board: A printed circuit board (PCB) includes a signal layer and a power layer. The signal layer includes a crystal oscillator pad, a clock generator pad, and two capacitor pads. The crystal oscillator pad is connected to the clock generator pad and the capacitor pads via two signal lines. The power... Agent: PCe Industry, Inc. Att. Cheng-ju Chiang Jeffrey T. Knapp

20070103248 - Oscillator and data processing equipment using the same and voltage control oscillator and data processing equipment using voltage control oscillator: An LC resonant circuit of an oscillator includes a parallel circuit of an inductor, a first fine adjustable capacitor and a first capacitor bank, and a series circuit of a second fine adjustable capacitor and a second capacitor bank. A frequency conversion gain of the oscillator is the sum of... Agent: Antonelli, Terry, Stout & Kraus, LLP

20070103249 - Temperature detecting apparatus: There is provided a temperature detecting apparatus for improving operational characteristics, which vary according to the temperature, of elements in a semiconductor memory device. The temperature detecting apparatus of the present invention includes: a first oscillator that outputs a first oscillating signal in response to a first oscillator reset signal,... Agent: Venable LLP

20070096833 - Phase-locked loop and method for operating a phase-locked-loop: A phase-locked loop suitable for mobile radio communications and a method for operating the same is disclosed. One embodiment of the phase-locked loop comprises an oscillator, a counter, a comparator, and a delay arrangement. The counter comprises a first input connected to the oscillator, a second input connected to a... Agent: Eschweiler & Associates, LLC National City Bank Building

20070096835 - Linearized charge pump having an offset: A charge pump provides charge based on a phase difference between a reference signal and a feedback signal. The relationship between the charge and the phase difference is referred to as the charge phase relationship. Charge pumps typically have a non-linear charge phase relationship. A non-linear portion of the charge... Agent: Sterne, Kessler, Goldstein & Fox P.l.l.c.

20070096834 - Pll frequency synthesizer: A PLL frequency synthesizer is provided with a linearization circuit 6 which receives an oscillation frequency control signal VT from a loop filter LF. The linearization circuit 6 outputs a charge pump current control signal CPCONT, depending on a potential level of the oscillation frequency control signal VT. The larger... Agent: Mcdermott Will & Emery LLP

20070096836 - Circuit and method for digital phase-frequency error detection: A time-to-digital converter comprises a ring oscillator, a counter, an encoder, and a multi-bit latch. The ring oscillator comprises a first input and a clock input, as well as, a first output responsive to a single cycle of the ring oscillator and a second output responsive to a signal applied... Agent: Smith Frohwein Tempel Greenlee Blaha, LLC

20070096837 - Signal generating circuit capable of generating a validation signal and related method thereof: A signal generating system for generating a validation signal includes: a phase lock loop (PLL) for locking an output clock to a specific clock frequency; and a digital signal generation circuit. The digital signal generating circuit includes: a triggering circuit, electrically coupled to the PLL, for determining whether the output... Agent: North America Intellectual Property Corporation

20070096838 - Field emission electron gun: Electron beam equipment fitted with a field emission electron gun (FEG) having an extractor electrode, an acceleration electrode, a repeller electrode disposed between the extractor electrode and the acceleration electrode, and a repeller power supply for applying a given voltage to the repeller electrode. Electrons extracted from the emitter collide... Agent: The Webb Law Firm, P.C.

20070096839 - Temperature compensation circuit for a surface acoustic wave oscillator: A surface acoustic wave oscillator includes a temperature sensor adapted to generate a temperature sensor signal. A temperature signal conditioner is coupled to the temperature sensor. The temperature signal conditioner receives the temperature sensor signal and generates a conditioned temperature sensor signal. A reactance generator is coupled to the temperature... Agent: Daniel J. Deneufbourg Cts Corporation

20070096840 - Method and apparatus for rapid local oscillator frequency calibration: A controller for an adjustable-frequency oscillator includes a first counter supplied with a stop-count value to count adjustable-frequency oscillator cycles divided by the ratio of desired frequency to reference oscillator frequency, to produce a stop signal when the first counter reaches the stop-count value. A second counter counts cycles of... Agent: Texas Instruments Incorporated

20070096841 - Low noise reference oscillator with fast start-up: A frequency source having a fast start-up time and low noise in steady state is presented. The frequency source includes an oscillator and a hybrid automatic gain control (AGC) loop that switches between an analog AGC loop at oscillator start up and a digital AGC loop at steady state operation.... Agent: Brinks Hofer Gilson & Lione