Famous Patents
In 1879, Auguste Bartholdi received design patent number 11,023 titled "Design for a Statue". It was for the Statue of Liberty.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 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. Due to the changes of the temperature, the reference frequency signal ... | 02/28/2012 |
| 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 in parallel and the diode is connected in series with one of the resis... | 01/10/2012 |
| 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 to the PV-controller and outputs an oscillation frequency. The T-cont... | 01/03/2012 |
| 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 oscillator; a temperature control circuit including a heating resistor an... | 12/27/2011 |
| 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 reference voltage generating unit and a periodic signal generating u... | 12/13/2011 |
| 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 range of the oscillation frequency, and a PLL circuit, an FLL circuit, an... | 12/13/2011 |
| 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 variable capacitor of an LC oscillating loop to generate oscillating signals... | 12/06/2011 |
| 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 temperature null phase is a phase of the LC tank at which variations in frequen... | 12/06/2011 |
| 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 configured to (i) store calibration parameters and (ii) select at least ... | 11/22/2011 |
| 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 crystal unit constant. The temperature control circuit includes a heati... | 11/01/2011 |
| 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 temperature-correlated bias current. The MOSFET's source is connected to ground through a... | 10/25/2011 |
| 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 output frequency as a function of temperature has one or more paramete... | 10/04/2011 |
| 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 the VCO. The auxiliary varactor has a capacitance controlled by a te... | 09/20/2011 |
| 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, and which are installed on the other principal surface of the circuit s... | 09/06/2011 |
| 7999628 | Bias generation circuit and voltage controlled oscillator This invention includes a bias origination section configured to originate an original bias voltage; a comparison section configured to compare the original bias voltage and a comparison voltage, and output a comparison result; a resistive divider section composed b... | 08/16/2011 |
| 7982550 | Highly accurate temperature stable clock based on differential frequency discrimination of oscillators An apparatus and a method for compensating for a mismatch in temperature coefficients of two oscillator frequencies to match a desired frequency ratio between the two oscillator frequencies over a temperature range. In one embodiment of a temperature sensor, first a... | 07/19/2011 |
| 7982551 | Voltage controlled oscillator having temperature detecting circuit A VCO circuit includes a temperature detector circuit, a voltage generator circuit, a switch, a resonance circuit and an oscillator. The temperature detector detects a temperature, and the voltage generator circuit generates a voltage for coarse adjustment correspon... | 07/19/2011 |
| 7924109 | MEMS oscillator Provided is a MEMS oscillation circuit which performs temperature compensation of a MEMS resonator with a simple circuit, which is mild so that an output clock does not have jitter, and which makes the range of fluctuations of a reference frequency from a reference ... | 04/12/2011 |
| 7920032 | Oscillator based on thermal diffusion An oscillator device for generating an oscillator signal, includes a heater arrangement, a first switching element, a temperature sensor, signal process means, and voltage controlled oscillator; an output of the temperature sensor being connected to an input of the ... | 04/05/2011 |
| 7889018 | Low VT dependency RC oscillator An oscillator utilizes two current sources that have the same temperature and VDD dependency so they generate the same current in changing conditions. Therefore, there is very low VT dependency. The resistor and fringe capacitor temperature coefficient are very low ... | 02/15/2011 |
| 7880553 | Oscillation circuit with temperature compensation An oscillation section for which an output frequency is controlled based on a control signal depending on an ambient temperature; a temperature compensation circuit for supplying the control signal to this oscillation section; and a switching switch circuit consisti... | 02/01/2011 |
| 7812683 | Integrated circuit package with glass layer and oscillator 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 oscillator calibrations and selects one of the oscillator calibrations as a function of the ... | 10/12/2010 |
| 7786817 | Crystal oscillator emulator An integrated circuit comprises a microelectromechanical (MEMS) resonator circuit that generates a reference frequency. A temperature sensor senses a temperature of the integrated circuit. Memory stores calibration parameters and selects at least one of the calibrat... | 08/31/2010 |
| 7782150 | Apparatus and method of temperature compensating an ovenized oscillator An oscillator having improved frequency stability which includes an oscillator circuit and an SC-cut resonator connected with the oscillator circuit. The SC-cut resonator has a first turning point. A temperature compensation circuit is connected with the oscillator ... | 08/24/2010 |
| 7777585 | Passive temperature compensation for an oscillator A technique for reducing temperature sensitivity of an LC oscillator circuit includes a passive circuit coupled in parallel with a load capacitor. In at least one embodiment, an oscillator circuit is configured to generate a periodic signal having a free-running fre... | 08/17/2010 |
| 7768360 | Crystal oscillator emulator A crystal oscillator emulator integrated circuit, comprises a first temperature sensor that senses a first temperature of the integrated circuit; memory that stores calibration parameters and that selects at least one of the calibration parameters based on the first... | 08/03/2010 |
| 7768361 | Crystal oscillator emulator An integrated circuit comprises a microelectromechanical (MEMS) resonator circuit that generates a reference frequency and that includes a semiconductor oscillator that generates resonator drive signal having a drive frequency and a MEMS resonator that receives the ... | 08/03/2010 |
| 7760039 | Crystal oscillator emulator A crystal oscillator emulator integrated circuit comprises a first temperature sensor that senses a first temperature of the integrated circuit. Memory stores calibration parameters and selects at least one of the calibration parameters based on the first temperatur... | 07/20/2010 |
| 7741924 | Temperature-compensated crystal oscillator and temperature compensation method for oscillator A temperature-compensated crystal oscillator including an oscillation circuit which includes an oscillator, a temperature detector, a voltage variable capacitance element coupled to an oscillation loop of the oscillation circuit, and a temperature compensation circu... | 06/22/2010 |
| 7741925 | Temperature detector circuit and oscillation frequency compensation device using the same A temperature detector circuit using a MOS transistor capable of reducing manufacture variation of a mobility and realizing stable output characteristics which are not affected by temperature dependency may be offered. In one example, the temperature detector circui... | 06/22/2010 |
| 7728684 | Crystal reference clock and radio localization receiver Device and method for temperature compensation in a clock oscillator using quartz crystals, which integrates dual crystal oscillators. The minimal power consumption is achieved through an efficient use of a processor in charge of the synchronization of the two oscil... | 06/01/2010 |
| 7728685 | Temperature compensation oscillator and method for manufacturing the same A temperature detection circuit (18) detects temperature around an oscillation circuit (20) equipped with voltage variable capacitors (23, 24). According to its temperature detection signal, a temperature compensation circuit (30) produce... | 06/01/2010 |
| 7714674 | System and method for calibrating bias current for low power RTC oscillator The integrated circuit package includes a processing core for operating on a set of instructions to carry out predefined processes. A real time clock circuit provides a system clock for the processing core. The real time clock further comprises an internal oscillato... | 05/11/2010 |
| 7705688 | Period signal generator of semiconductor integrated circuit A period signal generator comprises a first period signal generating unit for generating a first period signal of which period changes according to a temperature, a second period signal generating unit for generating a second period signal which has a constant perio... | 04/27/2010 |
| 7659787 | Circuit for generating clock of semiconductor memory apparatus A circuit for generating a clock of a semiconductor memory apparatus is provided. A reference voltage generator is configured to generate a reference voltage. A reference current generator is configured to generate a reference current that has a constant current val... | 02/09/2010 |
| 7649426 | Apparatus and method for temperature compensation of crystal oscillators An oscillator includes an oscillator circuit and a resonator that produces an output frequency. A temperature compensation circuit is coupled to the oscillator circuit. The temperature compensation circuit stabilizes the output frequency in response to changes in te... | 01/19/2010 |
| 7649425 | Programmable precision oscillator A free running clock circuit includes a switching circuit for switching between first and second logic states at a predetermined frequency based upon a trip voltage. The switching circuit has an inherent temperature profile associated therewith. A voltage divider ci... | 01/19/2010 |
| 7649427 | Crystal oscillator A crystal oscillator in which a temperature characteristic of an oscillation frequency is improved to omit a measurement operation of the temperature characteristic of the oscillator, and manufacturing is facilitated to reduce a manufacturing time. In the crystal os... | 01/19/2010 |
| 7642875 | Temperature correcting apparatus and voltage-controlled oscillation apparatus 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... | 01/05/2010 |
| 7633349 | Phase frequency detectors generating minimum pulse widths A phase frequency detector compares a reference clock signal to a feedback clock signal to generate pulses in one or more output signals. The one or more output signals have a minimum pulse width. The phase frequency detector has a temperature sensing circuit. The p... | 12/15/2009 |
