Crystal oscillator

Details Crystal oscillator Crystal oscillator

2006-08-08

2006-08-08

Budd, Mark (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C219S210000

Reexamination Certificate

active

07088032

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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patent: 0825717 (1998-02-01), None
patent: 0969591 (2000-01-01), None

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