| 摘要 |
PROBLEM TO BE SOLVED: To prevent a medical use device from being erroneously operated or disturbed by a transmission wave from a portable telephone set or a PHS being a radio communication means. SOLUTION: A detection circuit 1 detects a transmission wave (a) being a cause to malfunction/disturbance, a timing generating circuit 2 generates a timing control signal (d) synchronously with the transmission wave to control a changeover circuit 3. That is, in the case of non-transmission not receiving malfunction/disturbance, that is, when no transmission period is in existence, an output signal (c) of an input circuit 4 processing an input signal (b) from a medial equipment is given to an output circuit 6 as it is, and in the case of receiving possible malfunction/disturbance, that is, when a transmission wave is in existence, an output (e) from an interpolation circuit 5 is given to the output circuit 6. |
