Cursor positioning device for computer system

摘要

A cursor control device for controlling the movement and positioning of a cursor on a computer includes a finger controllable member formed on the cursor positioning device. The cursor on the display is controllable either in X-axis or Y-axis direction by means of sliding the finger controllable member on the device. The cursor positioning device includes a displacement detecting structure for detecting the movement of the finger controllable member, and photo encoder detectors for detecting the operating situation of the X-axis and Y-axis photo encoders which are arranged in 90 degrees phase deference in space. In such an arrangement, the displacement of the finger controllable member in X-axis and Y-axis direction may be detected as coordinate date. The detected coordinate data is transmitted to a control circuit for further processes and then sent to a computer device.