Multistage Distribution Switching Systems: Clos and Beyond

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: The average size of distribution switchers in television facilities is growing larger each year. In 1953, Charles Clos published a landmark technical paper concerning nonblocking multistage switching techniques, explaining how to reduce the number of crosspoints when compared to a standard switcher. Since that time, multistage switching systems have been proposed and used by several companies in the television industry. This article discusses the basic principles of multistage switching and the problem of blocking in television systems. It explains the causes of blockage, shows statistical results demonstrating the amount that may occur, and discusses ways to deal with these issues.
Publication Date: 1991-12-01
DOI: 10.5594/J02378
Link: https://doi.org/10.5594/J02378
Author(s): Marc S. Walker

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Marc S. Walker; Multistage Distribution Switching Systems: Clos and Beyond, SMPTE Journal ( Volume: 100, Issue: 12, December 1991); SMPTE, 1991. Available at https://doi.org/10.5594/J02378

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Marc S. Walker; Multistage Distribution Switching Systems: Clos and Beyond, SMPTE Journal ( Volume: 100, Issue: 12, December 1991); SMPTE, 1991. Available at https://doi.org/10.5594/J02378

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Marc S. Walker; Multistage Distribution Switching Systems: Clos and Beyond, SMPTE Journal ( Volume: 100, Issue: 12, December 1991); SMPTE, 1991. Available at https://doi.org/10.5594/J02378

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<span class="citation">Marc S. Walker; <cite>Multistage Distribution Switching Systems: Clos and Beyond</cite>, SMPTE Journal ( Volume: 100, Issue: 12, December 1991); SMPTE, 1991. Available at <a href="https://doi.org/10.5594/J02378" target="_blank" rel="noopener">https://doi.org/10.5594/J02378</a></span>

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Marc S. Walker; Multistage Distribution Switching Systems: Clos and Beyond, SMPTE Journal ( Volume: 100, Issue: 12, December 1991); SMPTE, 1991
doi: 10.5594/J02378
url: https://doi.org/10.5594/J02378

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Marc S. Walker; <cite id="bib-10-5594-j02378">Multistage Distribution Switching Systems: Clos and Beyond</cite>, SMPTE Journal ( Volume: 100, Issue: 12, December 1991); SMPTE, 1991
<span class="doi">10.5594/J02378</span>
</li>