Patent ID: 7463308
Filing Date: 2008-12-09
Classification: H04N

Abstract:
1. A data slicer circuit for separating, by using a pulse signal indicative of the presence/absence of data superimposed during specific scan periods of a video signal, the data from the video signal, the data slicer circuit comprising: a comparison circuit configured to compare the video signal with an analog signal, the comparison circuit outputting a result of the comparison; a control circuit configured to increase a digital signal by a constant interval if the video signal is larger than the analog signal, to decrease the digital signal by the constant interval if the video signal is smaller than the analog signal, and to output the digital signal, based on the result of the comparison of the comparison circuit; and a conversion circuit configured to convert the digital signal to the analog signal, wherein the analog signal depending on the result of the comparison of the comparison circuit is used as a slice level for separating the data from the video signal.