A standard-CMOS pointing device for portable applications, such as palmtop and credit-card size computers, is based on fingerprint-motion detection. The device behaves much the same as a trackball, but it does not require mechanical moving partsand can be fabricated in a smaller package. Pointing devices based on image motion estimation are previously reported [1]. In contrast to these devices, this implementation produces the moving image direct chip-finger contact.
展开▼
