Driver device, physical quantity measuring device, and electronic instrument
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Dec 14, 2010
Grant Date -
Mar 26, 2009
app pub date -
Nov 26, 2007
filing date -
Nov 27, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A driver device that forms an oscillation loop with a vibrator and causes the vibrator to produce driving vibrations includes a current-voltage converter that is provided in the oscillation loop and converts a current that flows through the vibrator into a voltage, and a GCA as a comparator that is provided in the oscillation loop and outputs a signal corresponding to a comparison result between an output from the current-voltage converter and a given voltage. The GCA outputs a first high-level voltage or a low-level voltage during oscillation startup, and outputs a second high-level voltage or the low-level voltage in a steady oscillation state. The first high-level voltage is a voltage higher in potential than the second high-level voltage.
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