| 摘要 |
<p>PURPOSE:To simplify the circuit configuration and to miniaturize the equipment by sharing a circuit for the digital mode with a circuit for the analog mode in a prescribed part. CONSTITUTION:One echo canceller 10 is shared in the analog mode and the digital mode in the dual mode type radio communication equipment, and A/D converters 7, 14 converting an analog signal inputted to the echo canceller 10 into a digital signal and D/A converters 11, 15 converting the digital signal outputted from the echo canceller 10 into an analog signal are shared in the analog mode and the digital mode.</p> |
