Patent ID: 7197930
Filing Date: 2007-04-03
Classification: G01C

Abstract:
1. A gyro sensor comprising: a vibrator vibrating in a first direction when said vibrator is applied with a vibrator drive signal through a first sensing element provided in said vibrator, said vibrator being provided with a second sensing element outputting a vibration detection signal representing a magnitude of vibration of said vibrator in said first direction, and a third sensing element outputting a yaw detection signal representing a magnitude of vibration of said vibrator in a second direction when said vibrator is vibrating in said first direction; and a sensor-circuit part applying said vibrator drive signal to said first sensing element; said sensor-circuit part including: a vibrator driving section processing said vibration detection signal outputted from said second sensing element to generate said vibrator drive signal; a yaw detecting section processing said yaw detection signal outputted from said third sensing element to generate a sensor signal representing a rate of yaw applied to said gyro sensor; a data storage section storing data necessary for processing said vibration detection signal and said yaw detection signal in said vibrator driving section and said yaw detecting section, respectively; and data reading circuit reading said data from said data storage section and transferring said read data to said vibrator driving section and said yaw detecting section in synchronization with a clock signal, wherein one of said vibrator drive signal being applied to said first sensing element, said vibration detection signal being outputted from said second sensing element, said vibration detection signal being processed by said vibrator driving section, said yaw detection signal being outputted from said third sensing element, and said yaw detection signal being processed by said yaw detecting section is used as said clock signal.