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8183947 |
Low power consuming quartz oscillator circuit with active polarisation
The quartz oscillator circuit includes an inverter comprising two complementary PMOS and NMOS transistors (P1, N1) series-mounted with a current source (4) between two terminals of a supply voltage...
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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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8154355 |
High-frequency colpitts circuit
A high-frequency Colpitts circuit having a feedback transistor Q2 in addition to an oscillation transistor Q1 is provided, wherein a collector of the transistor Q1 is connected to a base of the...
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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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8143961 |
Technique for detecting crystals
In at least one embodiment of the invention, an apparatus includes an integrated circuit, which includes a first oscillator terminal and an oscillator discrimination circuit. The oscillator...
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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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8140039 |
Quadrature-input quadrature-output divider and phase locked loop frequency synthesizer or single side band mixer
The present invention relates to a quadrature divider which may be used in a phase locked loop or frequency synthesizer or with a single side band mixer. According to a preferred embodiment the...
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8134814 |
Semiconductor device having an ESD protection circuit
A semiconductor integrated circuit, includes an operational amplifier including a first input terminal, a second input terminal, and an output terminal, a first transistor which has a source-drain...
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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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8125283 |
Method of manufacturing crystal element and crystal resonator manufactured thereby
A crystal element manufacturing method for manufacturing a plurality of crystal elements at a wafer level and a crystal resonator is provided. The method provides that when the frequencies of the...
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8122587 |
Manufacturing method of quartz crystal unit
A method for manufacturing a quartz crystal unit comprises the steps of adjusting an oscillation frequency of a quartz crystal tuning fork resonator that is vibratable in a flexural mode of an...
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8120439 |
Fast start-up crystal oscillator
An exemplary fast start-up crystal oscillator with reduced start-up time. The exemplary oscillator reduces the start-up time (i.e., the time taken to attain sustained stable oscillations after the...
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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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8120437 |
Oscillator with little deterioration capable of outputting clock pulses with target frequency
An oscillator includes: a vibrator having a first electrode and a second electrode disposed with a gap with the first electrode; a reference voltage supply circuit adapted to supply a reference...
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8115562 |
Oscillation circuit and method of controlling same
Disclosed is an oscillator in which current consumption relating to oscillation is reduced. The oscillator comprises: an amplifier to an input and output of which a piezoelectric oscillator and a...
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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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8102217 |
Oscillator having feedback path which is capable of supplying reduced voltage potential to oscillation circuit
An oscillator creates a reference voltage based on a pulse signal corresponding to an oscillation output of a crystal oscillation circuit and controls a supply voltage to the crystal oscillation...
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8091189 |
Method for manufacturing quartz crystal unit, quartz crystal oscillator and electronic apparatus
A quartz crystal unit has a quartz crystal tuning fork resonator that is capable of vibrating in a flexural mode and that has a quartz crystal tuning fork base, and first and second quartz crystal...
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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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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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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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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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8072278 |
System and method for reducing power consumption of an oscillator
An apparatus for generating an oscillating signal including a negative-resistance circuit, a crystal, and a component to modify a series resonance of the crystal to decrease power consumption of...
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8072279 |
Crystal oscillator with pedestal
An object of the invention is to provide an oscillator with a pedestal that facilitates soldering operations and offers a high level of productivity. A surface mount crystal oscillator with a...
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8072276 |
Surface mount crystal oscillator
There is provided a surface mount oscillator of a junction type in which the size of an IC chip is increased while maintaining high performance thereof, and the outer dimension of the oscillator in...
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8067993 |
Constant current driven oscillating circuit
There is provided a constant current driven oscillating circuit including: an oscillator with first and second ends; a first field effect transistor that turns ON when a signal of a lower level...
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8067994 |
Surface mount type crystal oscillator
There is provided a configuration in which a lead-out electrode that extends out from an excitation electrode provided on a lower surface of a crystal piece facing an inner bottom surface of a...
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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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8054138 |
Multi-oscillator circuit with variable power supply
This invention makes it possible to reduce a power consumption of an electronic circuit (microcomputer, for example) while preventing malfunctioning of an oscillator by appropriately setting a...
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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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8044730 |
Secondary vibration damping type crystal oscillator circuit
A secondary vibration damping type crystal oscillator circuit is formed as a Colpitts type, in which a crystal unit is connected between base and collector terminals, a first capacitor is connected...
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8040190 |
Phase-locked loop
A phase-locked loop includes: a variable oscillator connected to a first resonator, said oscillator being able to deliver an output signal at a first output frequency Fout1, a first frequency...
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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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8035283 |
Resonant actuator
A piezoelectric ceramic base member is formed of a bar shaped bismuth layer compound, and has main electrodes on two end surfaces in an oscillation direction, with connection electrodes at...
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8035454 |
Oscillator device comprising a thermally-controlled piezoelectric resonator
The crystal oscillator device includes an air-tight case (1) forming a vacuum chamber (23), a piezoelectric resonator element (11), oscillation circuitry, a temperature sensor, and a heating unit...
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8031026 |
***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
System and method for efficiently generating an oscillating signal
An apparatus for generating an oscillating signal including an oscillator configured to generate the oscillating signal, a controller configured to generate a control signal that controls a...
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8031010 |
Ruggedized chip scale atomic clock
The present invention is a Chip Scale Atomic Clock (CSAC)-enabled Time and Frequency Standard (CTFS) architecture. The CTFS architecture includes a microcontroller, a Time Compensated Crystal...
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8031013 |
Surface-mount type crystal oscillator
A surface-mount type crystal oscillator includes: a container body with a first recess and a second recess; a crystal blank including excitation electrodes on respective principal surfaces thereof...
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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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8031023 |
Crystal oscillator for surface mounting
The crystal oscillator for surface mounting includes: a container body having first and second recesses on both principal surfaces thereof; a crystal blank hermetically encapsulated within the...
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8026771 |
Driver device, physical quantity measuring device, and electronic instrument
A driver device that forms an oscillation loop with a vibrator and causes the vibrator to produce driving vibrations includes a current-voltage converter that converts a current that flows through...
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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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8024145 |
Method and system for signal generation via a temperature sensing crystal integrated circuit
Aspects of a method and system for signal generation via a temperature sensing crystal integrated circuit are provided. In this regard, a temperature sensing crystal integrated circuit (TSCIC)...
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8022777 |
Ovenized crystal oscillator assembly
An oscillator assembly including an oscillator seated on a pad of thermally conductive material formed on the surface of a printed circuit board and covered by a lid defining an oven for the...
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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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7990226 |
Non-linear crystal oscillator capacitive load circuits
A load circuit for a crystal oscillator includes a plurality of capacitors and a load control circuit configured to selectively add the capacitors to a load at a terminal of the crystal oscillator...
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7986194 |
Oscillator
An oscillator, includes an amplifier circuit including a semiconductor element having a first constant potential as reference potential for a power supply voltage, a variable capacitance element, a...
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7978016 |
Crystal oscillator
A crystal oscillator is provided to secure a space for housing the IC and electronic components, even if the vibrator is small in size. In this crystal oscillator, there is not a hindrance to the...
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