Patent ID: 6381287
Filing Date: 2002-04-30
Classification: H04L,H04N

Abstract:
A data slicer comprising:an analog to digital converter for sampling an input analog signal to convert the analog signal into a digital signal; a caption signal reader for determining upper/lower levels which are reference levels from the digital signal and detecting a line signal in which a caption data is inserted by applying a successive high/low detection manner to each of compared result between the digital signal and upper/lower level signals; a comparator for respectively comparing the digital signal with the upper/lower level signals and outputting the compared results to the caption signal reader; a data reader for outputting actual caption data by applying the successive high/low detection manner to the output of the comparator when the line signal in which the caption data is inserted is detected by the caption signal reader; and a controller for controlling the detection of the line signal in which the caption data is inserted, and a reading of the actual caption data.