Experimental Study of Slow-Scan High-Resolution Video Transmission at One-MegaHertz Bandwidth

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: It is often desirable to transmit graphic information such as a typewritten page or a detailed photograph over band-limited transmission media and to display it at the receiving end on a real-time basis. Since a narrow bandwidth is desirable for this, the video information must be transmitted at a low frame rate. At the receiving station a cathode-ray tube may be used to display the slow-scan information. To overcome flicker resulting from the low frame rate and/or inefficient long persistent phosphors a scan-conversion and frame-repeating technique is described in this paper. At the receiver the transmitted information displayed on a slow-scan cathode-ray tube is optically transferred through a lens to the target of a storage vidicon working at fast-scan rates. A long decay characteristic of stored charge in the photoconductor of the target makes it possible to regenerate the same frame of the video signal many times at the fast-scan rates without conspicuous fading during the slow-scan frame time. The regenerated information is displayed on a high-resolution wideband monitor.
Publication Date: 1968-12-01
DOI: 10.5594/J10892
Link: https://doi.org/10.5594/J10892
Author(s): Hatsuaki Fukui

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Hatsuaki Fukui; Experimental Study of Slow-Scan High-Resolution Video Transmission at One-MegaHertz Bandwidth, Journal of the SMPTE ( Volume: 77, Issue: 12, December 1968); SMPTE, 1968. Available at https://doi.org/10.5594/J10892

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Hatsuaki Fukui; Experimental Study of Slow-Scan High-Resolution Video Transmission at One-MegaHertz Bandwidth, Journal of the SMPTE ( Volume: 77, Issue: 12, December 1968); SMPTE, 1968. Available at https://doi.org/10.5594/J10892

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<span class="citation">Hatsuaki Fukui; <cite>Experimental Study of Slow-Scan High-Resolution Video Transmission at One-MegaHertz Bandwidth</cite>, Journal of the SMPTE ( Volume: 77, Issue: 12, December 1968); SMPTE, 1968. Available at <a href="https://doi.org/10.5594/J10892" target="_blank" rel="noopener">https://doi.org/10.5594/J10892</a></span>

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<li>
Hatsuaki Fukui; <cite id="bib-10-5594-j10892">Experimental Study of Slow-Scan High-Resolution Video Transmission at One-MegaHertz Bandwidth</cite>, Journal of the SMPTE ( Volume: 77, Issue: 12, December 1968); SMPTE, 1968
<span class="doi">10.5594/J10892</span>
</li>