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8183940 |
Temperature control device
A thermostatic-chamber temperature control device includes: a heating element for heating a thermostatic chamber; a bridge circuit having a temperature sensitive element whose resistance value...
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8179201 |
Resonator
A resonator having an effective spring constant (kz) and comprising a beam having a beam spring constant (kB) adapted to resonate in an oscillation direction, and extending at a non-zero angle (θ) ...
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8179294 |
Apparatus and method for the calibration of delta-sigma modulators
The application relates to a calibration apparatus and calibration method for a tuneable resonator of a delta-sigma modulator of the continuous time, band pass type. The calibration apparatus...
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8174330 |
Method and system for an energy efficient temperature sensing crystal integrated circuit
Aspects of a method and system for an energy efficient temperature sensing crystal integrated circuit (TSCIC) are provided. In this regard, one or more circuits in a temperature sensing crystal...
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8174331 |
Temperature compensated crystal oscillator, printed-circuit board, and electronic device
A temperature compensated crystal oscillator includes an oscillation circuit including a crystal oscillator; a variable capacitor inserted in series in the oscillation circuit; a thermosensitive...
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8159306 |
Integrated circuit with low temperature coefficient and associated calibration method
An integrated circuit (IC) with a low temperature coefficient and an associated calibration method are provided to lower the effect of the environmental temperature on the IC and at the same time...
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8149068 |
Temperature controlled crystal oscillator
A temperature controlled oscillator is provided with a circuit substrate having a crystal resonator, an oscillating circuit, and a temperature control circuit, arranged on one or both principal...
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8143963 |
Voltage source circuit for crystal oscillation circuit
A voltage source circuit for a crystal oscillation circuit is provided, in which the voltage source circuit and the crystal oscillation circuit are formed with the same process. The voltage source...
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8138847 |
Temperature and/or voltage independent voltage controlled oscillator with programmable gain and/or output frequency range
An apparatus comprising a transconductance control circuit, a boost control circuit, a current computation circuit and an oscillator circuit. The transconductance control circuit may be configured...
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8138846 |
Precision, temperature stable clock using a frequency-control circuit and a single oscillator
A frequency-control circuit, which is configured to receive a first signal having a first untuned frequency from a first oscillator, and to alter one or more pulses of the first signal to tune an...
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RE43236 |
Automatic circuit and method for temperature compensation of oscillator frequency variation over temperature for a real time clock chip
An automatic temperature compensated real-time clock (RTC) chip includes a clock portion having a crystal oscillator block including crystal compensation circuitry adapted to be coupled to a...
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8134414 |
Clock, frequency reference, and other reference signal generator with frequency stability over temperature variation
Exemplary embodiments provide a reference signal generator having a reference or center frequency within a predetermined variance over variations in temperature within a specified range. An...
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8130050 |
Dual table temperature compensated voltage controlled crystal oscillator system and method
Dual table temperature compensation for a voltage controlled crystal oscillator is achieved by sensing the temperature of the voltage controlled crystal oscillator (VCXO), retrieving from a first...
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8127426 |
Electronic apparatus having quartz crystal oscillating circuits
An electronic apparatus has a display portion, and first and second oscillating circuits each having a quartz crystal resonator, the quartz crystal resonator of each of the first and second...
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8125284 |
Temperature compensation method and apparatus for an output frequency signal based on successive approximation
Techniques of compensating frequency in an output in reference to a reference frequency signal are disclosed. The reference frequency signal may be from a crystal oscillator or other oscillators....
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8120438 |
Temperature compensated crystal oscillator
A temperature compensated crystal oscillator is mounted to a board. A quartz resonator includes a quartz chip that generates an oscillation frequency. A resistive element is formed on the quartz...
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8115559 |
Oscillator for providing a constant oscillation signal, and a signal processing device including the oscillator
An oscillator including a current bias circuit and a ring oscillator. The current bias circuit tracks a temperature change of the oscillator by using a control voltage and generates a plurality of...
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8111109 |
Temperature compensated piezoelectric oscillator
An oscillator that includes a movable element formed of silicon, the movable element vibrating by electrostatic force, a stationary element supporting the movable element, a temperature detector...
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8106715 |
Low-power oscillator
In order to decrease the temperature sensitivity of an oscillator output, and obtain a frequency of oscillation that remains stable over variations in temperature, two oscillators may be configured...
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8098110 |
Phase locked loop apparatus with selectable capacitance device
A phase locked loop apparatus includes an oscillator, a variable capacitance device, a selectable capacitance device, and a capacitance controller that is configured to provide a control signal to...
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8093956 |
Circuit for adjusting the temperature coefficient of a resistor
A temperature-compensated-resistance (TCR) circuit, which may be part of an integrated circuit, is provided. The TCR circuit consists of two resistors and a diode. The two resistors are connected...
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8093957 |
Method and apparatus for frequency compensation for multi-band VCO
A method and apparatus for frequency compensation for multi-band VCO have been disclosed where a VCO tank loading capacitance is adjusted slowly to allow VCO operation in a linear range.
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8089323 |
Green technology: green circuit and device designs of green chip
Green Design is to save the resource and energy for earth. Applying the recycling of energy concept to the electrical and electronic device and circuit, we can save many nuclear power plants to...
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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...
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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...
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8089324 |
Varactor-free amplitude controlled oscillator(ACO) for system on chip and system on card Xtaless clock SOC
The fundamental breakthrough in green technology are the Varactor Free Amplitude Controlled Oscillator VFACO and the planar EMI-Free Planar Inductor. The VFACO makes the fine tune for oscillation...
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8085105 |
Constant-temperature type crystal oscillator
A constant-temperature type crystal oscillator includes: a crystal unit including a case main body including a first power source terminal on an outer bottom surface thereof; a surface-mounted...
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8081040 |
Method and apparatus for oscillating
Aspects of the disclosure provide a voltage controlled oscillator. The voltage controlled oscillator can include a plurality of oscillation stages coupled together to generate an oscillation signal...
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8076984 |
Periodic signal generating circuit dependent upon temperature for establishing a temperature independent refresh frequency
A periodic signal generating circuit which is dependent upon temperature for establishing a temperature independent refresh frequency is presented. The periodic signal generating circuit includes a...
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8076985 |
PLL/FLL with voltage controlled oscillator
Provided is a voltage-controlled oscillator that can hold an oscillation frequency at a desired value when an oscillation frequency changes due to the temperature, without narrowing a variable...
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8076983 |
Constant-temperature type crystal oscillator
A constant-temperature type crystal oscillator includes: a crystal unit including a case main body, in which two crystal terminals and two dummy terminals are provided on an outer bottom face...
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8076980 |
Temperature-compensated ring oscillator
A temperature-compensated ring oscillator includes a control signal generator and a voltage controlled oscillator. The control signal generator is configured to generate at least one control...
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8069549 |
Method for sealing a quartz crystal device
A quartz crystal device includes a crystal resonator element and a package including a plurality of components. The plurality of components are bonded using a metal paste sealing material...
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8072282 |
Method of compensating an oscillation frequency and PLL
A method for compensating an oscillation frequency, a device, and a phase locked loop (PLL) is applied in the LC oscillating loop, including: sending voltage control signals to one end of a...
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8072281 |
Method, system and apparatus for accurate and stable LC-based reference oscillators
A substantially temperature-independent LC-based oscillator is achieved using an LC tank that generates a tank oscillation at a phase substantially equal to a temperature null phase. The...
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8067992 |
Temperature compensation circuit and method
Disclosed are various embodiments of temperature-compensated relaxation oscillator circuits that may be fabricated using conventional CMOS manufacturing techniques. The relaxation oscillator...
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8064578 |
Tune master caller identification device
Systems for providing a tune master caller identification (ID) device include a telecommunications network and a caller device configured to provide caller identification information for an...
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8063711 |
Crystal oscillator emulator
A crystal oscillator emulator integrated circuit includes a first temperature sensor configured to sense a first temperature of the crystal oscillator emulator integrated circuit. The memory is...
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8059425 |
Integrated circuit module with temperature compensation crystal oscillator
An integrated circuit module with temperature compensation crystal oscillator (TCXO) applying to an electronic device comprises: one substrate having one top surface; one temperature compensation...
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8058941 |
Voltage control type temperature compensation piezoelectric oscillator
A voltage control type temperature compensation piezoelectric oscillator, includes: a voltage control type oscillation circuit; an automatic frequency control (AFC) circuit outputting a control...
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8049572 |
Oven-controlled crystal oscillator
An oven-controlled crystal oscillator includes a circuit board, a crystal unit surface-mounted on the circuit board, and a temperature control circuit that maintains operating temperature of the...
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8044740 |
Temperature compensated RC oscillator for signal conditioning ASIC using source bulk voltage of MOSFET
A temperature compensated CMOS RC oscillator circuit changes the source-bulk voltage to stabilize the MOSFET's threshold voltage variation over temperature using a resistor and...
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8044736 |
Timing oscillators and related methods
Timing oscillators as well as related methods and devices are described. A timing oscillator may include a mechanical resonating structure with major elements and minor elements coupled to the...
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8044722 |
Oscillation frequency control circuit
To provide a highly stable oscillation frequency control circuit wherein the frequency thereof is corrected, an adequate range of the input levels of external reference signals is determined in...
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8040197 |
Crystal oscillator
A crystal oscillator includes a crystal unit and a voltage-variable capacitive element that is connected to the crystal unit in series, the crystal oscillator varying an oscillation frequency by...
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8037431 |
Structure for interleaved voltage controlled oscillator
A design structure embodied in a machine readable medium used in a design process includes an interleaved voltage-controlled oscillator, including a ring circuit of main logic inverter gates; a...
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8031024 |
Temperature-corrected frequency control with crystal oscillators
A wireless communication terminal includes a crystal oscillator, a transceiver and circuitry. The crystal oscillator belongs to a specified type of crystal oscillators in which a dependence of an...
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8026460 |
Control circuit for thermostatic oven in oven controlled crystal oscillator
Provided is a control circuit for a thermostatic oven in an oven controlled crystal oscillator, which is capable of further improving stability of an oscillation frequency. A control circuit in...
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8022780 |
Auxiliary varactor for temperature compensation
Techniques for compensating for the effects of temperature change on voltage controlled oscillator (VCO) frequency are disclosed. In an embodiment, an auxiliary varactor is coupled to an LC tank of...
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8013683 |
Constant-temperature type crystal oscillator
A constant-temperature type crystal oscillator includes: a crystal unit that is installed on one principal surface of a circuit substrate, and chip resistors, which function as heating elements,...
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