| 摘要 |
<p>A signal input device comprising a plurality of combinations (3), each including an analog filter (31) for filtering harmonics and an electric signal recognizing means (32) for recognizing an electric signal to digitize it; a multiplexer means (4) connected to said plurality of combinations (3) of the analog filter (31) and the electric signal recognizing means (32); a digital filter (5) for receiving an input signal at predetermined time intervals (at fixed time intervals, or adjustable time intervals, or time intervals selected depending upon said plurality of combinations (3) of the analog filter (31) and the electric signal recognizing means (32)) and passing said input signal only when signals consequentially received at an adjustable interval are identical; demultiplexer means (6) for distributing the output signal from the digital filter (5) to a plurality of output circuits in synchronism with the multiplexer means (4); and means (7) for controlling the demultiplexer means (6) and the multiplexer means (4) in synchronism with each other.</p> |
