Patent ID: 8581671
Filing Date: 2013-11-12
Classification: H03L

Abstract:
1. An oscillation device correcting an output frequency based on a detection result of an environmental temperature, the oscillation device comprising: a first quartz-crystal resonator including a first electrode provided on a quartz-crystal piece; a second quartz-crystal resonator including a second electrode provided on a quartz-crystal piece; a first oscillator circuit connected to the first quartz-crystal resonator to oscillate the first quartz-crystal resonator with an overtone; a second oscillator circuit connected to the second quartz-crystal resonator to oscillate the second quartz-crystal resonator with an overtone; a frequency difference detecting part finding a value corresponding to a difference value between a value corresponding to a difference between f a correction value obtaining part which, based on the value corresponding to the difference value detected by the frequency difference detecting part and a relation between the value corresponding to the difference value and a frequency correction value of the oscillation frequency f wherein an output of the first oscillator circuit is used to generate an output of the oscillation device, wherein, based on the frequency correction value found by the correction value obtaining part, the output frequency is corrected, and wherein the value corresponding to the difference value between the value corresponding to the difference between f