Digital Decoding of PAL and NTSC Signals Using Field Delay Comb Filters and Line-Locked Sampling

Author(s): C. K. P. Clarke
Publisher: Society of Motion Picture and Television Engineers
Publication Date: 1 February 1981
Conference Location: San Francisco, CA, USA
Conference Date: 6 February 1981
Page(s): 200 - 209
ISBN (Paper): 978-1-61482-911-9
DOI: 10.5594/M00663



Although there is widespread interest in digital television techniques, most studio equipment currently operates with analogue signals. In addition, most signals are distributed and processed in composite form. This avoids the problem of distributing separate analogue YUV components, even though many studio processes would benefit from component signal operation. Exceptionally, where direct processing of the composite signal is too difficult, such as for special effects and standards conversion, the signals are first decoded to component form, but this usually results in a loss of quality.