发明名称 |
Driver device, physical quantity measuring device, and electronic instrument |
摘要 |
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 converts a current that flows through the vibrator into a voltage, an output circuit that causes the vibrator to produce the driving vibrations based on a signal that is converted into a voltage with respect to a given voltage, and a high-pass filter that is provided in the oscillation loop between the current-voltage converter and the output circuit. The driver device causes the vibrator to produce the driving vibrations while changing a reference potential of the high-pass filter, and then causes the vibrator to produce the driving vibrations while fixing the reference potential. |
申请公布号 |
US8026771(B2) |
申请公布日期 |
2011.09.27 |
申请号 |
US20070984984 |
申请日期 |
2007.11.26 |
申请人 |
SEIKO EPSON CORPORATION |
发明人 |
KANAI MASAHIRO;YOSHIDA NAOKI;OTSUKA EITARO |
分类号 |
G01P15/10;H03B5/06;H03B5/30;H03B5/32;H03B5/36 |
主分类号 |
G01P15/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|