Patent ID: 8203290

Claim:
A vibrating element comprising: a movable portion driven to vibrate at a prescribed resonance frequency; a driving portion vibrating said movable portion by cyclically supplying a pulse signal; and a detecting portion detecting the vibrational state of said movable portion, wherein said driving portion is so formed as to supply said pulse signal at a first frequency substantially identical to said resonance frequency of said movable portion at least in starting and to cyclically supply said pulse signal at a second frequency smaller than said first frequency in detection of the vibrational state of said movable portion, and said vibrating element is so formed as to repeat detection of the vibrational state of said movable portion during supply of said pulse signal at said second frequency and matching of said first frequency with said resonance frequency of said movable portion on the basis of the detected vibrational state of said movable portion every lapse of a prescribed time.