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| Number | Title | Issue Date |
| 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 integrated circuit (TSCIC) may be configured to control power consumptio... | 05/08/2012 |
| 8031012 | Optoelectronic oscillator and pulse generator The objects of the present invention are to shorten a cavity length of an optoelectronic oscillator and to integrate on a semiconductor or SiO2-substrate. An optoelectronic oscillator 10 have an optoelectronic loop comprising a semiconductor laser 11, ... | 10/04/2011 |
| 7855608 | System and method for providing temperature correction in a crystal oscillator A system and method for providing temperature compensation in a oscillator component (such as a crystal oscillator component) that includes a closely-located temperature sensing device. The crystal oscillator component in example systems and methods is exposed to a ... | 12/21/2010 |
| 7847644 | Modulation signal generation circuit, transmission/reception module, and radar device A modulation-signal generating circuit includes a temperature monitoring unit that detects a casing temperature of the circuit, a voltage control oscillator including two variable impedance circuits that independently control oscillation frequency based on an input ... | 12/07/2010 |
| 7679461 | Varactor device with reduced temperature dependence The invention discloses a varactor device (100) for improved temperature stability, comprising a first varactor (160) connected to a decoupling network (150). The device further comprises a voltage stabilizer (110), said stabilizer compri... | 03/16/2010 |
| 7573340 | 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 oscil... | 08/11/2009 |
| 7557665 | Temperature tracking oscillator circuit A temperature-dependent oscillator includes a first current source, wherein a first current provided by the first current source has a positive temperature coefficient, a second current source serially connected to the first current source, wherein a second current ... | 07/07/2009 |
| 7554415 | Microcomputer including a CR oscillator circuit A microcomputer includes an oscillator for generating a clock signal having a frequency by using a CR circuit, a multiplier for outputting the clock signal having a multiplied frequency relative to the frequency generated by the oscillator based on data from an exte... | 06/30/2009 |
| 7466209 | System and method for providing temperature correction in a crystal oscillator A system and method for providing temperature compensation in a oscillator component (such as a crystal oscillator component) that includes a closely-located temperature sensing device. The crystal oscillator component in example systems and methods is exposed to a ... | 12/16/2008 |
| 7459983 | Temperature detecting semiconductor device There is provided a technique which is capable of detecting a temperature of a semiconductor device with high precision. A temperature detection circuit detecting a temperature of a semiconductor device includes a first short-cycle oscillator generating a first cloc... | 12/02/2008 |
| 7439818 | Voltage-and temperature-compensated RC oscillator circuit An integrated temperature-compensated RC oscillator circuit includes an inverter having an input and an output. An RC network is coupled between the inverter and a pair of comparators. A first comparator has an inverting input coupled to a first reference voltage, a... | 10/21/2008 |
| 7411172 | Method and apparatus for resetting a high speed latch circuit A latch circuit includes first and second resonant tunneling diodes coupled in series, and a reset portion having a photodiode portion responsive to varying photonic energy for switching between first and second states which are different. When the photodiode portio... | 08/12/2008 |
| 7403078 | Temperature compensated crystal oscillator The present invention relates to an integrated circuit for a temperature compensated crystal oscillator having an external crystal. The integrated circuit comprises a temperature compensation having one fixed or at least two selectable 3rd and/or 4th... | 07/22/2008 |
| 7371005 | 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 crystal. The crystal compensation circuitry includes a non-linear capacitor... | 05/13/2008 |
| 7369004 | Microelectromechanical oscillator and method of operating same There are many inventions described and illustrated herein. In one aspect, the present inventions relate to a temperature measurement system comprising (1) a first microelectromechanical resonator to generate a first output signal having a frequency that varies with... | 05/06/2008 |
| 7369003 | Oscillator system having a plurality of microelectromechanical resonators and method of designing, controlling or operating the same There are many inventions described and illustrated herein. In one aspect, the present inventions relate to oscillator systems which employ a plurality of microelectromechanical resonating structures, and methods to control and/or operate same. The oscillator system... | 05/06/2008 |
| 7356719 | Microcomputer In an EEPROM of a microcomputer, data is stored for determining a communication rate CMR for fixing the data transmission time of one frame managed by a communication circuit on the basis of an oscillation output characteristic of a CR oscillating circuit that varie... | 04/08/2008 |
| 7352252 | Circuit and method to measure threshold voltage distributions in SRAM devices A circuit for inline testing of memory devices which provides information on the variation of the threshold voltage. The circuit includes an array of ring oscillators with a series of inverters, which already exist in the memory device. A control logic systematicall... | 04/01/2008 |
| 7348857 | Monitoring and compensating for real time local circuit speed in an integrated circuit A circuit and related method of monitoring performance of an integrated circuit is provided comprising: using a variable oscillator that has an oscillation time period that varies within an expected range with variations in one or more of process, voltage or tempera... | 03/25/2008 |
| 7345552 | Constant temperature type crystal oscillator A lead wire led-out type crystal oscillator of constant temperature type for high stability is disclosed, which includes a heat supply body that supplies heat to a crystal resonator from which a plurality of lead wires are led out, to maintain the temperature consta... | 03/18/2008 |
| 7342793 | Aerogel/PTFE composite insulating material A material comprising aerogel particles and a polytetrafluoroethylene (PTFE) binder is formed having a thermal conductivity of less than or equal to 25 mW/m K at atmospheric conditions. The material is moldable or formable, having little or no shedding of filler par... | 03/11/2008 |
| 7342460 | Expanded pull range for a voltage controlled clock synthesizer A technique provides a clock source that meets accuracy requirements, allows the use of a low cost resonator, provides a wide range of output frequencies, and provides suitable phase noise performance. The technique generates a clock signal having a target output fr... | 03/11/2008 |
| 7340366 | Method and apparatus of temperature compensation for integrated circuit chip using on-chip sensor and computation means A method and apparatus of temperature compensation for an integrated circuit using on-chip circuits, sensors, and an algorithm. The chip includes an on-chip reference circuit, an on-chip sensor measuring a parameter relative to the reference, and an on-chip computat... | 03/04/2008 |
| 7332975 | Reference-less clock circuit A programmable reference-less oscillator provides a wide range of programmable output frequencies. The programmable reference-less oscillator is implemented on an integrated circuit that includes a free running controllable oscillator circuit such as a voltage contr... | 02/19/2008 |
| 7324256 | Photonic oscillator A photonic oscillator includes an optical transceiver that serves the dual purpose of detecting a feedback RF lightwave signal carried on a laser beam and electrically filtering the RF lightwave signal to modulate the RF lightwave signal in accordance therewith, to ... | 01/29/2008 |
| 7321272 | Device for detecting the temperature of an oscillator crystal In a device for detecting the temperature of an oscillator crystal 2, arranged on a carrier, in particular in a mobile radio apparatus, the detected temperature should be as exact as possible a replica of the temperature to which the oscillator crystal 2 | 01/22/2008 |
| 7313034 | Low supply voltage temperature compensated reference voltage generator and method A reference voltage generator uses a conventional forward junction voltage generating device and a conventional thermal generator to generate a thermal voltage. The forward junction voltage and the thermal voltages have respective thermal sensitivities that act oppo... | 12/25/2007 |
| 7307482 | Ring oscillator setting apparatus and method depending on environmental changes of an image formation apparatus A ring oscillator setting apparatus and method depending on an environmental change of an image formation apparatus is provided. The apparatus includes a plurality of ring oscillators for generating different oscillation frequencies. The apparatus further includes a... | 12/11/2007 |
| 7301408 | Integrated circuit with low dielectric loss packaging material An integrated circuit package comprises an integrated circuit that comprises a temperature sensor that senses a temperature of the integrated circuit. A memory module stores data relating to oscillator calibrations and selects one of the oscillator calibrations as a... | 11/27/2007 |
| 7286020 | Techniques for monitoring and replacing circuits to maintain high performance Techniques are provided for monitoring the performance of circuits and replacing low performing circuits with higher performing circuits. A frequency detector compares the frequency of a first periodic signal to the frequency of a second periodic signal. The differe... | 10/23/2007 |
| 7283007 | Electronic circuit with means of evaluating its temperature, method for evaluating the temperature, and application An electronic circuit (CE) is provided with an oscillator (OSC—1) outputting a signal (S1) with a frequency (F1) varying as a function of the temperature (Tc) of this circuit, and receiving or outputting a signal (S2) with a ... | 10/16/2007 |
| 7262429 | Thz detection employing modulation doped quantum well device structures An improved THz detection mechanism includes a heterojunction thyristor structure logically formed by an n-type quantum-well-base bipolar transistor and p-type quantum-wellbase bipolar transistor arranged vertically to share a common collector region. Antenna elemen... | 08/28/2007 |
| 7253694 | Temperature compensated oven controlled crystal oscillator A method provides a temperature controlled frequency source. The method reduces the effects of temperature variations on an operating frequency of the temperature controlled frequency source by temperature compensating the temperature controlled frequency source. | 08/07/2007 |
| 7253695 | Function generating circuit and temperature characteristic controlling method for function generating circuit In a function generating circuit which comprises a temperature sensor 1 for outputting an output current (Ilin) with a linear temperature characteristic or an output voltage (Vlin) with the linear temperature characteristic, a cubic function generating circui... | 08/07/2007 |
| 7248128 | Reference oscillator frequency stabilization Method for stabilizing the frequency of a MEMS (Micro Electro Mechanical Systems) reference oscillator, and a MEMS reference oscillator, wherein the method comprises following steps: using two or more MEMS components, wherein each MEMS component is characterized by ... | 07/24/2007 |
| 7248127 | Crystal oscillator A quartz crystal oscillator in which phase noise is reduced includes: a resonance circuit having a quartz crystal unit and a split capacitor connected to the crystal unit; a transistor for oscillation having its base connected to the node of the crystal unit and the... | 07/24/2007 |
| 7248126 | Temperature correction device and voltage control oscillation device A temperature correcting apparatus divides an actually measured waveform of correcting voltages, which are required at each of different temperatures, by a minimum resolution of D/A conversion; obtains voltage digital values representing voltage values at individual... | 07/24/2007 |
| 7242258 | Temperature-compensated crystal oscillator An inventive temperature-compensated crystal oscillator has a construction such that a crystal oscillator element (5) is accommodated in a container (1) and an IC element (7) for controlling an oscillation output on the basis of the oscillation ... | 07/10/2007 |
| 7239211 | Temperature-compensated crystal oscillator A temperature-compensated quartz crystal oscillator includes a substrate having a circuit pattern disposed on a surface thereof and mounting electrodes disposed on a reverse side thereof and electrically connected to the circuit pattern, circuit components mounted o... | 07/03/2007 |
| 7236061 | Temperature compensated refresh clock circuit for memory circuits A memory circuit that generates a positive temperature correlated clock frequency is described. One embodiment includes a voltage reference having a voltage determined at least in part by a diode or transistor having a negative temperature coefficient. A clock gener... | 06/26/2007 |
