Development of Improved Three Dimensional Digital Color Decoder Conforming to CCIR REC-601

Abstract

This paper describes a high-performance 3-dimensional digital color decorder, that converts composit signals into component signals conforming to the CCIR Rec. 601. In order to achieve a high performance color decorder three kinds of filter a temporal-spacial comb, a two dimensional comb, and a pass band in the frequence domain are prepared.
The outputs of these filters are adaptively adjusted to the quantities of cross-talk between the luminance and chrominance of each pixel, measured by a temporal-spacial comb and 2-dimensional comb filters, then added.
The result and output is the high picture quality chrominance signal separated from the composite signal. Component signals are then easily obtaind using the multiplication and subtraction circuits.