| 摘要 |
PROBLEM TO BE SOLVED: To obtain a noise elimination device that can reproduce an original signal with fidelity regardless of a comparatively less arithmetic quantity. SOLUTION: The noise elimination device is provided with a demodulation circuit 3 that demodulates a signal from an antenna 1, a noise detection circuit 4 that detects a noise from the signal demodulated by the demodulation circuit 3, an A/D converter 5 that converts the signal demodulated by the demodulation circuit 3 into a digital signal, and a noise elimination circuit 6 that receives an output signal from the A/D converter 5. The noise elimination circuit 6 receives a signal from the noise detection circuit 4, conducts an arithmetic operation to calculate an original signal for a sample time before noise intrusion just before and just after the noise detection period and within the noise detection period, and replaces the signal including the noise for the noise detection period with the calculated original signal data.
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