Error correction circuit of image reading system

The circuit comprises; a storage means for storing image data of one horizontal scanning period by receiving an image digitized in response to a write clock signal; a write address generating means(204) for sequentially generating write addresses for the storage means in response to the write clock signal; a read address generating means(205) for sequentially generating read addresses for the storage means in response to a read clock signal; a chrominance signal phase controlling means(206) for controlling the phase of a chrominance signal by receiving a drop-out detecting signal, the read address signal and the write address signal; a chrominance signal phase inverting means(202) for inverting the phase of the chrominance signal by receiving the output signal of the storage means; and a selecting means for outputting the output signal of the storage means or outputting the output signal of the chrominance signal phase inverting means in response to the output signal of the chrominance signal phase controlling means.