DATA INPUT DEVICE AND INFORMATION INDICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To permit a presenter to give a mark on a picture projected on a projection display board or to annotate it by means of moving from an input device by providing a stylus part transmitting a signal to a digitizer and a laser pointer part indicating an object for a base. SOLUTION: A computer 12 contains a digitized tablet 22 on the screen 20 of a display monitor 19. When the tip of the stylus part 34 of the data input device 28 is brought into contact with the upper surface of a tablet 22, a battery part 32 supplies power to an oscillator part 40 and a signal 44 used when the computer 12 judges the position and the operation mode of the data input device 28 is transmitted. Then, data is inputted to the computer 12 by the stylus part 34 of the data input device 28 and data projected on the projection board 18 can be emphasized by using the laser pointer part 36.