Patent ID: 7305771

Claim:
A rotation sensor system disposed inside a digital imaging device having a processor, said rotation sensor system being capable of detecting the rotation state of said digital imaging device when said digital imaging device is capturing a picture, said rotation sensor system comprising: a processor mounted on a circuit board; a rotation sensor electrically coupled to said circuit board for sensing a rotation of said circuit board; said rotation sensor including: a Y-shaped strip having two sensing arms and a fixed arm for connecting said two sensing arms, a metal piece being disposed on each of said two sensing arms, said sensing arms being made of an electrically conductive material, wherein a first end of said fixed arm is integrally connected to an end of each of said two sensing arms and a second end of said fixed arm is fixedly disposed in said digital imaging device, said second end being electrically connected to said circuit board; and a conducting strip disposed between said two sensing arms, said conducting strip being fixedly disposed in said digital imaging device and electrically connected to said circuit board, said Y-shaped strip and said conducting strip forming a closed circuit to send out a signal to said processor when one of said metal pieces on one of said two sensing arms touches said conducting strip, said processor thereby determining the rotation state of said digital imaging device based on said signal.