Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 8, 2006
Patent Application Number
11154289
Date Filed
June 16, 2005
Patent Citations Received
Patent Primary Examiner
Patent abstract
A crystal oscillator of the present invention includes: a substrate provided in a package; a heating device arranged as surrounding an internal area of the substrate on at least one of the surfaces of the substrate; a crystal resonator or a crystal element and an oscillation circuit unit provided in an area enclosed by the heating device; a thermosensitive element which detects a temperature in an area enclosed by the heating device; and a control unit for controlling a heating value applied to the heating device based on a detection result of the thermosensitive element.
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