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Oversampling system

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专利汇可以提供Oversampling system专利检索,专利查询,专利分析的服务。并且PURPOSE: To prevent characteristic from being deteriorated with simple constitution by providing a circuit to perform conversion, interpolation, and thinning at specific speed.
CONSTITUTION: An analog input signal (a) is filtered by the analog low-pass filter 5 of an analog-digital conversion circuit 1, and a band-limited analog signal (b) is outputted to an analog-digital converter 6. The converter 6 changes the signal (b) to a digital signal (f) of (n) bits at conversion speed 1.5fs by a clock (c) from a clock input terminal (CP) 12, and it is interpolated by a clock (d) from a CP 13 at an interpolation circuit 2, and is outputted to a digital filter 3 as a digital signal (g) of (n) bits at speed 3fs. The filter 3 functions as a low-pass filter by the clock (d) from the CP 13, and performs the low-pass filtering of the signal (g), and outputs a digital signal (h) at speed 3fs to a thinning circuit 4, and performs speed conversion by thinning the signal (h) by a clock (e) from a CP 14, and outputs a digital signal (i) of (n) bits at speed fs from an output terminal 15.
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