| 摘要 |
<p>A modulation/demodulation apparatus including a modulation unit (12) for modulating transmission data in accordance with a predetermined modulation system, a changeover unit (13) for changing over between and selecting modulated signals from the modulation unit (12) or transmission data, and an IR light emitting unit (14) for emitting the IR light modulated by modulated signals or by the transmission data as selected by the changeover unit (13), and an information processing apparatus including a central processing unit (1) having first and second operating modes and adapted for generating transmission data, a modulating unit (12) for modulating the transmission data from the central processing unit, a changeover unit (13) for changing over between and selecting modulated signals from the modulating unit (12) or the transmission data, and an IR light emitting unit (14) for outputting IR light modulated by the modulated signals or by the transmission data as selected by the changeover unit (13), wherein the central processing unit (1) controls the changeover unit (13) for selecting the modulated signals from the modulating unit (12) or the transmission signals in the first operating mode and in the second operating mode, respectively. <IMAGE></p> |
