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| Number | Title | Issue Date |
| 8085104 | Oscillation circuit, driving circuit thereof, and driving method thereof An oscillation circuit, a driving circuit thereof, and a driving method thereof are provided. The driving circuit generates a second enable signal according to an output signal of an oscillator and a first enable signal. The second enable signal is transmitted to th... | 12/27/2011 |
| 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 the vibrator into a voltage, an output circuit that causes the vibrat... | 09/27/2011 |
| 8008981 | Multi-phase ultra-wideband signal generator using differential pulse oscillators and array thereof A multi-phase ultra-wideband signal generator uses differential pulse oscillators. The multi-phase ultra-wideband signal generator using differential pulse oscillators includes N pulse oscillators for generating pulse signals based on a supply of power, and further ... | 08/30/2011 |
| 7859354 | Ring oscillators Ring oscillator circuitry is provided. The ring oscillator circuitry may include a loop of inverters. A control gate may be interposed in the loop to control operation of the loop. The control gate may be activated using a ring oscillator trigger signal. During appl... | 12/28/2010 |
| 7719373 | Device and method for generating a signal with predefined transcient at start-up A device and a method are presented for generating an intermitted oscillating signal comprising a plurality of oscillating portions separated from each other in time. The device and method are suited for communication systems, in particular for Ultra-Wide Bandwidth ... | 05/18/2010 |
| 7714673 | Control method for operation modes of oscillator and the apparatus thereof The present invention relates to a control method for the operation modes of an oscillator and the apparatus thereof, for which the method and the apparatus can be applied to the electronic circuits with multi-operation modes of the oscillator so as to correctly cho... | 05/11/2010 |
| 7692506 | Oscillation driver device, physical quantity measuring device, and electronic instrument An oscillation driver device includes a gain control amplifier, an automatic gain control circuit, and a mode setting circuit. When the mode setting circuit has switched a mode from a normal operation mode to a low power consumption mode, the automatic gain control ... | 04/06/2010 |
| 7667549 | Semiconductor device and driving method thereof A low-power-consumption semiconductor device and a driving method thereof where a clock signal generation is controlled. A transmission and reception control circuit to control signal communication with an outside; a ring oscillator control circuit to detect an edge... | 02/23/2010 |
| 7642874 | Oscillator circuit with transition detection enable An oscillator circuit may be used with controller circuits that are designed to operate with crystals, with no modifications to the pinout or firmware of the controller circuit. In some embodiments, the oscillator circuit includes an enable input that is responsive ... | 01/05/2010 |
| 7642873 | Method for enabling an oscillator circuit using transition detection An oscillator circuit may be used with controller circuits that are designed to operate with crystals, with no modifications to the pinout or firmware of the controller circuit. In some embodiments, the oscillator circuit includes an enable input that is responsive ... | 01/05/2010 |
| 7616072 | Integrated circuit and receiver of a global positioning system (GPS) A global positioning system and integrated circuit with a differential oscillator and with a starting circuit connected to the differential oscillator, wherein the differential oscillator has a current mirror for setting an operating current through each of the two ... | 11/10/2009 |
| 7545227 | Low-latency start-up for a monolithic clock generator and timing/frequency reference An apparatus, system and method are provided for low-latency start-up of a free-running harmonic oscillator. The exemplary apparatus embodiment comprises a first and second current sources to generate first and second currents; a bias current monitor adapted to dete... | 06/09/2009 |
| 7504900 | Integrated circuit package including programmable oscillators An integrated circuit package includes a processing core and an internal oscillator. The processing core operates on a set of instructions to carry out predefined processes. The internal oscillator provides a system clock for the integrated circuit package. The inte... | 03/17/2009 |
| 7492232 | Oscillator circuit, semiconductor device and semiconductor memory device provided with the oscillator circuit, and control method of the oscillator circuit There is provided an oscillator circuit capable of obtaining stable frequency by avoiding output having unstable frequency that is likely to occur to an operation/stop-control-feasible type oscillator circuit when oscillation begins. In such an oscillator circuit, a... | 02/17/2009 |
| 7482888 | Fast startup resonant element oscillator A startup circuit 200 and method 700 is provided for quickly starting up a resonator based oscillator. Tunable oscillator 201 provides an impetus signal to oscillator 205 through capacitor 202. The impetus signal has a frequency th... | 01/27/2009 |
| 7429883 | Oscillator configured to complete an output pulse after inactivation An oscillator includes an oscillating block for generating a control signal in response to an enable signal, wherein the control signal is periodically toggled and a feedback block for receiving the control signal to generate the enable signal in response to an osci... | 09/30/2008 |
| 7429897 | Wide operating-frequency range voltage controlled oscillators Voltage controlled oscillator (VCO) circuitry with low phase noise and a wide range of operating frequencies is presented. The VCO circuitry includes circuitry with two or more VCO sub-circuits, each sub-circuit being optimized to produce output clock signals with l... | 09/30/2008 |
| 7420432 | Noise removal circuit A noise removal circuit. The noise removal circuit comprises a crystal oscillator and a level decision module. The crystal oscillator generates an oscillating signal and an output clock signal. The level decision module detects the signal level of the oscillating si... | 09/02/2008 |
| 7369006 | Applied voltage control circuit for voltage controlled oscillation circuit When a power supply is turned on, an NPN transistor is disconnected, a first transmission gate is conducted, a second transmission gate is disconnected, and a power-supply voltage is applied to a control input terminal of a voltage controlled oscillation circuit via... | 05/06/2008 |
| 7339440 | Nonlinear pulse oscillator methods and apparatus Methods and apparatus for implementing stable self-starting and self-sustaining electrical nonlinear pulse (e.g., soliton, cnoidal wave, or quasi-soliton) oscillators. In one example, a nonlinear pulse oscillator is implemented as a closed loop structure that compri... | 03/04/2008 |
| 7307486 | Low-latency start-up for a monolithic clock generator and timing/frequency reference An apparatus, system and method are provided for low-latency start-up of a free-running harmonic oscillator. The exemplary apparatus embodiment comprises a first and second current sources to generate first and second currents; a bias current monitor adapted to dete... | 12/11/2007 |
| 7292108 | Voltage controlled oscillator for frequency synthesizer The voltage controlled oscillator includes an oscillating transistor, and first and second inductance elements which are connected in series and provided between an output terminal of the oscillating transistor and a high frequency ground point Vcc. Oscillating sign... | 11/06/2007 |
| 7271675 | Automatic gain control circuit and method and super-regenerative RF receiver An automatic gain control (AGC) circuit is applied to control a margin voltage of an oscillator. The margin voltage is the voltage difference between a high-level output and a low-level output of the oscillator. The AGC circuit of the present invention includes a co... | 09/18/2007 |
| 7268598 | Method and system for providing a power-on reset pulse Provided are a method and system for providing a power-on reset pulse. The system includes a level detector configured to receive an input signal and produce, at least indirectly, a reset signal when the input signal reaches a predetermined level. The system also in... | 09/11/2007 |
| 7239210 | Oscillator circuit, semiconductor device and semiconductor memory device provided with the oscillator circuit, and control method of the oscillator circuit There is provided an oscillator circuit capable of obtaining stable frequency by avoiding output having unstable frequency that is likely to occur to an operation/stop-control-feasible type oscillator circuit when oscillation begins. In such an oscillator circuit, a... | 07/03/2007 |
| 7233213 | Oscillator of semiconductor device An oscillator of a semiconductor memory device, wherein a reference voltage that flexibly shifts according to the shift in a power supply voltage is generated, and a reference clock is generated using the reference voltage. It is thus possible to generate the refere... | 06/19/2007 |
| 7215936 | Super-regenerative receiver including phase-locked loop An improved low-cost super-regenerative receiver includes sampling phase-locked loop. Phase sampling is controlled by the quench signal (264). In the preferred embodiment, logic state HIGH to logic state LOW transition of the quench signal (264) define... | 05/08/2007 |
| 7196589 | Apparatus and method for dual features of frequency setting and frequency synchronization in one pin An integrated circuit includes an oscillator circuit, where a frequency of an oscillator output signal provided by the oscillator circuit is adjustable by either coupling a resistor to an input pin, or by applying an external clock signal to the input pin. The oscil... | 03/27/2007 |
| 7171323 | Integrated circuit having clock trim circuitry An integrated circuit is provided comprising a processor, an onboard system clock having a ring oscillator for generating a clock signal, a memory, and clock trim circuitry. The processor is arranged to, in response to receiving an external signal, determine the num... | 01/30/2007 |
| 7155176 | System for synchronizing a portable transceiver to a network A system for synchronizing a portable transceiver to a network is disclosed. Embodiments of the system for synchronizing a portable transceiver to a network include a crystal oscillator, a frequency synthesizer adapted to receive an output of the crystal oscillator,... | 12/26/2006 |
| 7151419 | Oscillation-stop detection circuit, oscillation-stop detection system, electronic device, and oscillation-stop detection method An oscillation-stop detection circuit includes a switching unit that repeats turning on and off based on a cycle of an oscillation signal from an outside; a capacitor that is charged when the switching unit is turned on, and discharged when the switching unit is tur... | 12/19/2006 |
| 7135939 | Semiconductor device including an external oscillation circuit A semiconductor device includes an external oscillation circuit connected to an external resonator, a self-exciting oscillation circuit, and an oscillation clock monitoring circuit, the oscillation clock monitoring circuit monitors an oscillation state of the extern... | 11/14/2006 |
| 7123109 | Crystal oscillator with variable bias generator and variable loop filter An oscillator circuit may be operated in a high power mode or a reduced power mode. The high power mode provides fast start-up of the oscillator circuit. ... | 10/17/2006 |
| 7078979 | Phase controlled oscillator circuit with input signal coupler An oscillating signal in an oscillator is caused to phase shift toward the phase of an input signal coupled to the oscillating signal. The resonant frequency of the oscillator is about equal to an integer multiple of the frequency of the input signal. The input sign... | 07/18/2006 |
| 7053725 | 4X crystal frequency multiplier with op amp buffer between 2X multiplier stages A frequency-multiplying circuit generates a multiple of the fundamental frequency of a crystal that oscillates. A first differential multiplier is coupled to the crystal nodes and generates a frequency-doubled output. The frequency-doubled output is applied to an op... | 05/30/2006 |
| 7042300 | Oscillator circuit, semiconductor device and semiconductor memory device provided with the oscillator circuit, and control method of the oscillator circuit There is provided an oscillator circuit capable of obtaining stable frequency by avoiding output having unstable frequency that is likely to occur to an operation/stop-control-feasible type oscillator circuit when oscillation begins. In such an oscillator circuit, a... | 05/09/2006 |
| 7009460 | Method and apparatus for reducing the start time of a VCXO A voltage controlled oscillator, such as a VCXO (Voltage Controlled Crystal Oscillator), for generating a desired reference frequency in a wireless terminal with a reduced start-up time is described herein. According to the present invention, the VCXO comprises an o... | 03/07/2006 |
| 7009458 | Method and system for fast wake-up of oscillators A method and system for fast wakeup of a high-Q oscillator (300) that includes a resonating element (304), preferably a crystal resonator (304), and an amplifier (310). The method comprises connecting the resonating element (304) t... | 03/07/2006 |
| 7002393 | Switched capacitor circuit capable of minimizing clock feedthrough effect and having low phase noise and method thereof A switched capacitor circuit includes a capacitor; a switch element for selectively coupling a first node to a second node according to a control signal, wherein the first node is coupled to the capacitor; and a charge circuit coupled to the first node for coupling ... | 02/21/2006 |
| 7002423 | Crystal clock generator operating at third overtone of crystal's fundamental frequency A crystal oscillator operates at the third overtone of the crystal's fundamental frequency. A value of a shunt resistor between the two phase-shift leg nodes is chosen so that the absolute value of the product gm×(Xc1)×(Xc2) is greater than the effec... | 02/21/2006 |
