Color Decoding a PCM NTSC Television Signal

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: Several techniques are developed for digital color decoding of NTSC television signals pulse-code modulated at 10.7-MHz rates (three times the color subcarrier frequency) and 14.3-MHz rates (four times the color subcarrier frequency). Digital comb filtering is also explored as a way to achieve superior color decoding. Encoding PCM NTSC television at the 14.3-MHz rate was found to afford the best algorithms for color decoding. A different PCM technique called Phase Alternating Line Encoding (PALE) permits encoding at 10.7 MHz and allows effective digital comb filtering and good color decoding. In the PALE technique, the phase of the 10.7-MHz digital encode command signal is inverted on adjacent television lines. Straight PCM encoding at 10.7 MHz is a poor third choice for comb filtering and color decoding applications.
Publication Date: 1974-06-01
DOI: 10.5594/J08760
Link: https://doi.org/10.5594/J08760
Author(s): John P. Rossi

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John P. Rossi; Color Decoding a PCM NTSC Television Signal, Journal of the SMPTE ( Volume: 83, Issue: 6, June 1974); SMPTE, 1974. Available at https://doi.org/10.5594/J08760

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John P. Rossi; Color Decoding a PCM NTSC Television Signal, Journal of the SMPTE ( Volume: 83, Issue: 6, June 1974); SMPTE, 1974. Available at https://doi.org/10.5594/J08760

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John P. Rossi; Color Decoding a PCM NTSC Television Signal, Journal of the SMPTE ( Volume: 83, Issue: 6, June 1974); SMPTE, 1974. Available at https://doi.org/10.5594/J08760

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<span class="citation">John P. Rossi; <cite>Color Decoding a PCM NTSC Television Signal</cite>, Journal of the SMPTE ( Volume: 83, Issue: 6, June 1974); SMPTE, 1974. Available at <a href="https://doi.org/10.5594/J08760" target="_blank" rel="noopener">https://doi.org/10.5594/J08760</a></span>

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John P. Rossi; Color Decoding a PCM NTSC Television Signal, Journal of the SMPTE ( Volume: 83, Issue: 6, June 1974); SMPTE, 1974
doi: 10.5594/J08760
url: https://doi.org/10.5594/J08760

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<li>
John P. Rossi; <cite id="bib-10-5594-j08760">Color Decoding a PCM NTSC Television Signal</cite>, Journal of the SMPTE ( Volume: 83, Issue: 6, June 1974); SMPTE, 1974
<span class="doi">10.5594/J08760</span>
</li>