Oscillators inventions 02/07

20070040614 - Circuit arrangement for detection of a locking condition for a phase locked loop, and a method: A circuit arrangement includes a phase locked loop, having a phase detector on whose output side a phase signal can be tapped off and whose output side is coupled to a charge pump. Furthermore, the phase locked loop includes an oscillator whose input side is coupled to the charge pump... Agent: Eschweiler & Associates, LLC National City Bank Building

20070040615 - Direct digital synthesizer system and related methods: A direct digital synthesizer (DDS) has reduced spurious signals and includes a DDS core that produces a digital representation of a signal to be synthesized. A plurality of DDS circuits are operatively connected to the DDS core, each having a digital-to-analog converter connected to the DDS core for receiving the... Agent: Richard K. Warther Allen, Dyer,doppelt,milbrath & Gilchrist P.A.

20070040617 - Analogue self-calibration method and apparatus for low noise, fast and wide-locking range phase locked loop: A method and apparatus for a fast and automatic setting of the phase locked loop (PLL) output frequency that significantly improves linearity, locking range as well as spectrum purity, jitter and phase noise performances is disclosed. In one embodiment, a PLL frequency synthesizer is disclosed having a reconfigurable voltage controlled... Agent: Harness, Dickey & Pierce, P.L.C

20070040616 - Oscillator and radar apparatus using the same: An oscillator and a radar apparatus that includes a resonator electro-magnetically connected to a micro strip line and a rotor connected to the resonator by capacitance. The bottom surface of the rotor has a changing height in the circumferential direction of the rotor. As the rotor is rotated, an actual... Agent: Dickstein Shapiro LLP

20070040618 - System and method for signal filtering in a phase-locked loop system: A system and method for modulating a phase component of an electromagnetic signal includes a phase/frequency detector having first and second inputs and an output. The first phase/frequency detector input may be configured to receive a reference signal. The system may include an oscillator having an input and an output.... Agent: Brian C. Oakes Tyco Electronics Corporation

20070040619 - Digitally programmable capacitor array: A programmable capacitor array does not require separate switching transistors because the capacitors themselves have a switchable capacitance, which capacitors are made in the manner of regular N channel transistors with their source/drains connected to each other. When a logic low is applied to the gate, the capacitance is relatively... Agent: Freescale Semiconductor, Inc. Law Department

20070040622 - Differential amplifier for use in ring oscillator: A differential amplifier circuit for use in a ring oscillator includes first and second MOS transistors to each source of which an operating power source voltage is applied, and which individually respond to first and second input signals with mutually contrary phases applied to gates thereof; cross-coupled first and second-stage... Agent: Mills & Onello LLP

20070040620 - Method of functionality testing for a ring oscillator: A method and apparatus is provided for testing the logic functionality and electrical continuity of a ring oscillator comprising an odd number of inverters connected to form a closed loop. In the method and apparatus, a known value is forced through the ring oscillator, to test the complete circuit path... Agent: Ibm Corp (ya) C/o Yee & Associates PC

20070040621 - Voltage controlled oscillator using dual gated asymmetrical fet devices: A ring oscillator is formed using inverting stages configured from asymmetrical dual gated FET (ADG-FET) devices. The simplest form uses an odd number of CMOS inverter stages configured with an ADG-PFET and an ADG-NFET. The front gates are used as the logic inputs and are coupled to preceeding outputs from... Agent: Ibm Corp (wsm) C/o Winstead Sechrest & Minick P.C.

20070040623 - Method and apparatus for digital synthesis of microwaves through balanced transmission line structures: Conductor segments are positioned within a transmission line structure in order to generate microwave pulses. The conductor segments are switchably coupled to one or the other of the transmission lines or to each other, in parallel with the transmission line structure. Microwave pulses will be induced in the transmission line... Agent: Bingham Mccutchen LLP

20070040624 - Crystal oscillator: An apparatus for oscillating a surface is described. The apparatus comprises an oscillator circuit having: a) a piezoelectric crystal connected to the surface; b) a variable frequency generator for generating a driving signal which is supplied to the crystal to cause the crystal to oscillate, thereby causing the surface to... Agent: Blank Rome LLP

20070040625 - Frequency tuning circuits and voltage-controlled oscillator including the same: A frequency fine tuning circuit for use in a voltage-controlled oscillator is provided. The frequency tuning circuit includes a first varactor, a second varactor and a center bias unit. The second varactor is coupled to the first varactor at a first node. The center bias unit maintains a node voltage... Agent: F. Chau & Associates, LLC

20070035343 - Phase-locked/frequency-locked loop and phase/frequency comparator therefor: A phase/frequency comparator is described which includes two edge-triggered storage elements, each set by an edge of a reference frequency signal of a phase- or frequency-locked loop (PLL) and by an edge of an output frequency signal of the PLL. The storage elements are each reset by an output signal... Agent: Ditthavong & Carlson

20070035344 - Characteristic automatic compensating apparatus, characteristic automatic compensating method, characteristic automatic compensating program of oscillator and positioning signal receiver: A characteristic automatic compensating apparatus including a reference oscillator 17 for outputting an oscillating signal an oscillating frequency of which depends on a temperature, TCO 16 for detecting the temperature of the reference oscillator 17, characteristic determining means for measuring a drift value of the oscillating frequency of the reference... Agent: Harness, Dickey & Pierce, P.L.C

20070035348 - Circuits and methods for reducing static phase offset using commutating phase detectors: Embodiments of the present invention reduce static phase offset in timing loops. In one embodiment, the present invention includes a timing loop comprising first and second phase detectors, wherein during a first time period, the first phase detector is coupled in a closed timing loop and the second phase detector... Agent: Fountainhead Law Group

20070035345 - Frequency and/or phase lock loops: A control loop (10) for producing an output signal with a stable nominal frequency is provided. The control loop includes inputs for reference (11) and oscillator (25) output signals, a beat frequency generator (12) for producing a signal with a frequency that is the difference between the oscillator and reference... Agent: Dann, Dorfman, Herrell & Skillman

20070035347 - Pll frequency synthesizer: A PLL frequency synthesizer is provided that enables improvement of near C/N, shortening of lockup time, and reduction of residual FM to be achieved. In this apparatus, phase comparison is performed by a phase comparator (101) on a signal input from an input terminal I1 and a signal output from... Agent: Stevens, Davis, Miller & Mosher, LLP

20070035346 - Variable impedance circuit using cell arrays: In a voltage control circuit (100), an array (500) of circuit elements is used to drive a variable capacitor controlling the frequency of a voltage controlled oscillator (110) (VCO). The array (500) has a plurality of cells (600), at least one output, a plurality of coarsesetting inputs (383-388) and a... Agent: Philips Electronics North America Corporation Intellectual Property & Standards

20070035349 - Voltage controlled oscillator circuit, phase-locked loop circuit using the voltage controlled oscillator circuit, and semiconductor device provided with the same: A VCO circuit includes: a control portion to which a first voltage is inputted and from which a second voltage corresponding to the first voltage is outputted; a current source portion to which the second voltage is inputted and from which a current corresponding to the second voltage is outputted;... Agent: Eric Robinson

20070035350 - Circuit arrangement for generating a reference signal: In a circuit arrangement for generation of a reference signal with an oscillation generator, a phase-controlled filter and a frequency multiplier are arranged downstream from the oscillation generator. The frequency multiplier is connected with an output for emission of the reference signal.... Agent: Schiff Hardin, LLP Patent Department

20070035351 - Fully integrated frequency generator: Embodiments of the present invention include a frequency generator comprising a feedback loop with a transmission line integrated on a single integrated circuit. In one embodiment, a frequency generator comprises a phase detector and a voltage controlled oscillator coupled in series, and a transmission line having an input coupled to... Agent: Fountainhead Law Group

20070035352 - Variable capacitance diode: A resistance having a high impedance is connected between anode terminals of two variable capacitance diodes sharing a cathode, and the components described above are sealed in one package. The resistance can be formed of a diffusion region between p-regions of the variable capacitance diodes or can be formed of... Agent: Morrison & Foerster LLP

20070035353 - Real time clock: A real time clock assembly includes paired crystal oscillators that experience changes in frequency responsive to temperature. The differences in frequency changes between the paired crystal oscillators are utilized to determine a temperature utilized to compensate for those shifts in frequency. The predictability of frequency responsive to temperature variations by... Agent: Siemens Corporation Intellectual Property Department

20070030079 - Phase locked loop circuit and semiconductor integrated circuit device using the same: To provide a phase locked loop circuit that is capable of performing an automatic adjustment that satisfies a desired characteristic not depending on a process variation and an environmental variation. The phase locked loop circuit has a phase frequency comparator, a charge pump, a loop filter, a frequency divider, a... Agent: Miles & Stockbridge PC

20070030078 - Phase locked loop with scaled damping capacitor: In order to reduce the area of a charge pump PLL, one may separate proportional component and integral component of the loop filter voltage, and add additional circuitry so as to make the integral component appear as though it is affected by a much larger value of capacitance than is... Agent: Mendelsohn & Associates, P.C.

20070030080 - Voltage controlled digital analog oscillator and frequency synthesizer using the same: Provided are a voltage controlled digital analog oscillator and a frequency synthesizer using the same, the oscillator comprising an oscillator having a frequency of an output signal being determined by a voltage inputted to an analog input end and a digital value inputted to a digital input end; and a... Agent: Ladas & Parry LLP

20070030081 - Voltage controlled oscillator with duty correction: There is provided a voltage controlled oscillator (VCO) stably generating a clock of a 50% duty from a simple circuit to have an excellent duty correction function in noise. The VCO includes a VCO unit and a duty correction unit. The VCO unit generates first and second signals having a... Agent: Lowe Hauptman Berner, LLP

20070030082 - Semiconductor device: Disclosed is a booster circuit comprising a voltage detection circuit for outputting a decision output signal for detecting a boosted voltage and controlling a voltage boosting operation, an oscillation circuit, and a plurality of charge pump circuits. The oscillation circuit includes an odd number of stages of control-type inverters. When... Agent: Young & Thompson

20070030083 - Crystal oscillator: A crystal oscillator in which phase noise is reduced includes: a resonance circuit having a crystal unit and split capacitors connected to the crystal unit; a transistor for oscillation having a base connected to the connection node of the crystal unit and the split capacitors; an output line for connecting... Agent: Fitch, Even, Tabin & Flannery

20070030084 - Method of manufacturing a temperature compensated oscillator: A method of manufacturing a temperature compensated oscillator including the steps of assembling an oscillator in which an IC chip constituting a temperature compensation circuit with an oscillation circuit and a compensation data storage circuit, and a resonator for the oscillation circuit are mounted in a package; adjusting the resonator... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20070030086 - Network: A variable capacitance network is disclosed, comprising a plurality of capacitance arms connected in parallel with each other between first and second terminals of the network. Each capacitance arm has a varactor and a series capacitor in series with the varactor A control input applies a common control signal to... Agent: Intel/blakely

20070030087 - Network: A variable capacitance network is disclosed, comprising a plurality of capacitance arms connected in parallel with each other between first and second terminals of the network. Each capacitance arm has a varactor and a series capacitor in series with the varactor A control input applies a common control signal to... Agent: Intel/blakely

20070030085 - Regulated capacitive loading and gain control of a crystal oscillator during startup and steady state operation: An oscillator circuit and system are provided having a peak detector that can determine a peak voltage value from the oscillator. The peak voltage value can then be compared against a predetermined voltage value by a controller coupled to the peak detector. The comparison value is then used to change... Agent: Daffer Mcdaneil LLP

20070024380 - Apparatus and method for emulating a component in a circuit: A circuit and method for emulating a component in a circuit are shown that control a current controlled oscillator with a first current that is proportional to a square of a load current of the component and also charge and discharge a high precision capacitor using the current controlled oscillator.... Agent: Francissen Patent Law, P.C.

20070024381 - Charge supply apparatus and method in frequency synthesizer: A charge supplying apparatus in a frequency synthesizer includes first and second charge supply units. The first charge supply unit is activated for generating a first voltage coupled to a loop filter, and the second charge supply unit is activated for generating a second voltage coupled to the loop filter.... Agent: Law Office Of Monica H Choi

20070024379 - Low-noise fine-frequency tuning: Circuits, methods, apparatus, and code that provide low-noise and high-resolution electronic circuit tuning. An exemplary embodiment of the present invention adjusts a capacitance value by pulse-width modulating a control voltage for a switch in series with a capacitor. The pulse-width-modulated control signal can be adjusted using entry values found in... Agent: Townsend And Townsend And Crew LLP

20070024378 - Voltage shift control circuit for pll: A PLL structure comprises a PFD, a loop filter and a VCO, as well as a voltage shift capacitor (Ca) coupling the PFD and the VCO. A voltage shift control circuit (50) is placed in parallel with the voltage shift capacitor. This circuit comprises controlled charging means (51), which are... Agent: Mccracken & Frank LLP

20070024382 - Method for modulating phase or frequency in a communication system using clock division: A direct division modulator is provided. The direct division modulator includes a symbol mapper converting the input data from a binary bitstream to a desired frequency deviation, such as where the frequency deviation data encodes the information from the bitstream. A converter generates a divide value using the desired frequency... Agent: Mr. Christopher John Rourk Jackson Walker LLP

20070024383 - Phase locked loop fast lock method: The present invention is a method to rapidly lock a type II phase locked loop (PLL) after a frequency jump without degrading the output signal much. The method to decrease the settling time and improve the quality of the output clock during the settling disclosed herein comprises of the following... Agent: Laubscher & Laubscher, P.C.

20070024384 - Noise signal generation by mapping random words: The invention relates to noise signal generator, comprising a random word generator for generating a sequence of random words, each word representing an input value, a mapping unit for receiving the sequence of random words, mapping each input value to an output value of according to a probability distribution function,... Agent: Perman & Green

20070024386 - Crystal oscillator: A crystal oscillator that outputs an oscillation output signal of an oscillator circuit oscillated by a crystal resonator as a resonation source via a buffer circuit, includes: a plurality of waveform output circuits provided in the buffer circuit, each converting, when inputted, the oscillation output signal into a different waveform... Agent: Harness, Dickey & Pierce, P.L.C

20070024385 - Low-noise high-stability crystal oscillator: Circuits, methods, and apparatus that provide low-noise, high-stability crystal oscillators having controlled-amplitude differential output signals and DC level control. A crystal oscillator circuit has two feedback loops, one for setting the DC level of its signals, the other for adjusting the amplitude of those signals. The DC level feedback loop... Agent: Townsend And Townsend And Crew LLP