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Receiving circuit, electronic apparatus and method for controlling receiving circuit

Image Number 4 for United States Patent #8120387.

A receiving circuit includes a comparing circuit, a first storage circuit, a second storage circuit, and a voltage controlling circuit. The comparing circuit compares an input signal with a reference voltage and outputs a signal with either a first level when the input signal is larger than the reference voltage or a second level when the input signal is smaller than the reference voltage as a comparison result. The first storage circuit stores an output level of the comparing circuit for a next one cycle. The second storage circuit stores an output level of the first storage circuit for a next one cycle. The voltage controlling circuit controls a level of the reference voltage in each cycle on the basis of output levels of the first storage circuit and the second storage circuit.

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