Patent application number | Description | Published |
20090167367 | Frequency Synthesizer - An object of the present invention provides a frequency synthesizer having a broad frequency entraining range which can finely set a frequency over a broad band by a novel principle. | 07-02-2009 |
20130033332 | QUARTZ-CRYSTAL CONTROLLED OSCILLATOR - An atmosphere temperature at which a quartz-crystal oscillator and an oscillation circuit are placed is controlled in high accuracy, and an output frequency with high stability is obtained. If oscillation outputs of first and second quartz-crystal oscillators are set to f | 02-07-2013 |
20130106523 | OSCILLATOR | 05-02-2013 |
20130342980 | SURFACE MOUNT DEVICE - A surface mount device in which a pin adapter that is integrally formed with a plurality of pins connects a base board and a main board is provided to enable an automatic mounting, to enable a reflow soldering, to increase the flexibility of design, and to satisfy requirements of customers. In the surface mount device, a pin adapter | 12-26-2013 |
20140085015 | OSCILLATION DEVICE - An oscillation device is provided. The oscillation device includes: a main circuit portion, a heating unit, first and second crystal units, first and second oscillator circuits, a frequency difference detector, a first addition unit, an integration circuit unit, a circuit unit configured to control an electric power to be supplied to the heating unit, a compensation value obtaining unit, and a second addition unit. The compensation value obtaining unit is configured to obtain a frequency compensation value for compensating an output frequency of the main circuit portion based on an integrated value output from the integration circuit unit, and based on a change in the clock signal due to a difference between the temperature of the atmosphere and the temperature setting value of the heating unit. The second addition unit is configured to add the frequency compensation value to a frequency setting value. | 03-27-2014 |
20140210563 | CRYSTAL CONTROLLED OSCILLATOR AND OSCILLATING DEVICE - A crystal controlled oscillator of the present disclosure includes: an oscillator circuit for oscillator output, a first oscillator circuit, a second oscillator circuit, a heating unit, a pulse generator, a frequency difference detector, an addition unit, a circuit unit, a frequency measuring unit, a determination unit, and a signal selector. The signal selector is configured to: select a control signal where electric power supplied to the heating unit is smaller than supplied electric power in the detection range in a case where a frequency in a set period at the train of pulses is out of the detection range at the high temperature side; select a control signal where electric power supplied to the heating unit becomes a preset value in a case where a frequency in the set period at the train of pulses is out of the detection range at the low temperature side. | 07-31-2014 |
20140292416 | OSCILLATOR - An oscillator configured to obtain a frequency output corresponding to a frequency setting value includes: an oscillation circuit portion that receives the frequency setting value; a setting value output portion that outputs a digital value for designating the frequency setting value; an interpolation circuit portion that performs interpolation for a digital value of lower-order bits out of the digital value output from the setting value output portion; and an adder that adds an output of the interpolation circuit portion and a digital value of higher-order bits out of the digital value output from the setting value output portion, wherein a signal output from the interpolation circuit portion is sequential data having first and second values different from each other, and output counts of the first and second values are determined based on a ratio corresponding to the digital value of the lower-order bits. | 10-02-2014 |
20140292418 | OSCILLATION DEVICE - An oscillation device corrects a setting value of an output frequency based on a detection result of an ambient temperature of a crystal unit. The oscillation device includes: an oscillation circuit; a temperature detection portion that detects the ambient temperature and outputs a digital value corresponding to the temperature detection value; an accumulator that accumulates the digital value; a rounding processing portion that performs rounding for the digital value accumulated in the accumulator; a digital filter that receives the digital value obtained from the rounding processing portion and obtains a step response gradually increasing from “0” and converging to a step value; and a correction value obtaining portion that obtains a frequency correction value of the oscillation frequency of the oscillation circuit caused by a difference between the ambient temperature and a reference temperature, wherein the setting value of the output frequency is corrected based on the frequency correction value. | 10-02-2014 |
20140292424 | PIECE-CRYSTAL OSCILLATOR AND OSCILLATION DEVICE - A crystal oscillator includes: an oscillation circuit; first and second oscillation circuits connected to first and second temperature detection crystal units, respectively; a heating portion configured to constantly maintain an ambient temperature; a frequency difference detection portion that obtains, as a temperature detection value, “{(f | 10-02-2014 |
20140297056 | TEMPERATURE CONTROLLER - A temperature controller for controlling a temperature of a heated body heated by a heater to a target temperature. The temperature controller includes a temperature detection unit, a difference computation unit, a controller, a comparison unit, an abnormal event detection unit, and a power feeding stopping unit. The abnormal event detection unit is configured to output a second signal that is an abnormal event detection signal when the first signal continues to be output for a period of time exceeding a pre-set period of time. The power feeding stopping unit is configured to stop power feeding to the heater when the second signal is output. The power feeding amount to the heater is controlled based on the manipulated variable computed by the controller. | 10-02-2014 |