| 摘要 |
PROBLEM TO BE SOLVED: To improve the operability by obviating operations by hand for magnifying and reducing the content of a display device in the operation of an information processor. SOLUTION: The information processor 1 is constituted of a display device 2, a keyboard 3 and a mouse 4, etc., and a display screen 5 and sensors 7 for detecting the position of an operator 6 are arranged on the display device 2. The sensors 7 measure distances by ultrasonic sensors, etc., to detect the position of the operator 6 by three-point forcusing. The detected positions of operator are transmitted to the information processor 1, which calculates the movement 8 of the operator 6 based on the information. |
