| 摘要 |
<p>PURPOSE:To input the location of an input device as position coordinate information without using operation unit such as tablet regardless of the direction of a control means by finding the location by utilizing Doppler effect. CONSTITUTION:Switches S1-Sn coded by an input information detecting device 10 and the information of pressure detection sensor 9 are emitted as radio waves from an antenna 13 through a modulator 11 and a transmitter 12. The processing of the radio waves is performed in the first system consisting of an antenna 7, a receiver 14, a demodulator 15, and a waveform shaper 16 and in the second system consisting of an antenna 8, a receiver 17, a demodulator 18, and a waveform shaper 19. An input information detector 20 is provided with the function detecting the position coordinate information at the tip of a pen 5 and the function detecting the modulated information code. In finding the position coordinate information, the wave cycle change to be generated when shifting the device generating the constant cycle wave is formed to detect the speed based on its intensity, and the position is calculated based on the time.</p> |
