Driver device, physical quantity measuring device, and...

Details Driver device, physical quantity measuring device, and... Driver device, physical quantity measuring device, and...

2007-09-07

2010-12-28

Chang, Joseph (Department: 2817)

Oscillators

Electromechanical resonator

Crystal

C331S1160FE, C331S158000, C310S317000, C073S514290

Reexamination Certificate

active

07859351

ABSTRACT:
An oscillation driver circuit includes a current-voltage converter which converts a current value of an oscillation signal in an oscillation loop into a voltage value, and a comparator which outputs a signal corresponding to the result of comparison between the output signal from the current-voltage converter and a given reference signal. The comparator has an output current limiting function. The oscillation driver circuit causes the vibrator to produce driving vibrations based on the output from the comparator.

REFERENCES:
patent: 4578650 (1986-03-01), Watson
patent: 7408309 (2008-08-01), Wang et al.
patent: 7573346 (2009-08-01), Hagino
patent: 2005/0178202 (2005-08-01), Uehara
patent: 2008/0087084 (2008-04-01), Kanai et al.
patent: 2008/0105054 (2008-05-01), Kanai et al.
patent: A-2003-240556 (2003-08-01), None
patent: A-2004-286503 (2004-10-01), None

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