Research and Development on High-Definition Television in Japan

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: In Japan, NHK (Japan Broadcasting Corp.) is taking the initiative in developing a high-definition wide-screen television system as a target for future broadcasting systems. Investigations have been carried out on the relationships among three parameters: picture size, number of scanning lines, and visual impact—using both a film simulation method and a real television system. As a result of these investigations and taking into consideration the currently available technology, the provisional number of scanning lines was set at 1125; and an experimental camera, 70-mm film telecine, and contour corrector have been developed. For a display device, a 30-in (76-cm) color CRT receiver with 5:3 aspect ratio has been built. Two transmission systems have been developed: one in which two separate carriers are frequency modulated by the luminance and chrominance signals respectively and another system which transmits a composite color signal using a color subcarrier. A transmission test has been carried out with the Experimental Broadcasting Satellite (12 GHz, 100 W for each of two channels), and very attractive pictures and sound were received using a 2.5-m diameter receiving antenna. A countermeasure against attenuation due to rainfall in future 22-GHz systems is also proposed.
Publication Date: 1981-03-01
DOI: 10.5594/J01481
Link: https://doi.org/10.5594/J01481
Author(s): Kozo Hayashi

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Kozo Hayashi; Research and Development on High-Definition Television in Japan, SMPTE Journal ( Volume: 90, Issue: 3, March 1981); SMPTE, 1981. Available at https://doi.org/10.5594/J01481

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Kozo Hayashi; Research and Development on High-Definition Television in Japan, SMPTE Journal ( Volume: 90, Issue: 3, March 1981); SMPTE, 1981. Available at https://doi.org/10.5594/J01481

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Kozo Hayashi; Research and Development on High-Definition Television in Japan, SMPTE Journal ( Volume: 90, Issue: 3, March 1981); SMPTE, 1981. Available at https://doi.org/10.5594/J01481

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<span class="citation">Kozo Hayashi; <cite>Research and Development on High-Definition Television in Japan</cite>, SMPTE Journal ( Volume: 90, Issue: 3, March 1981); SMPTE, 1981. Available at <a href="https://doi.org/10.5594/J01481" target="_blank" rel="noopener">https://doi.org/10.5594/J01481</a></span>

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Kozo Hayashi; Research and Development on High-Definition Television in Japan, SMPTE Journal ( Volume: 90, Issue: 3, March 1981); SMPTE, 1981
doi: 10.5594/J01481
url: https://doi.org/10.5594/J01481

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Kozo Hayashi; <cite id="bib-10-5594-j01481">Research and Development on High-Definition Television in Japan</cite>, SMPTE Journal ( Volume: 90, Issue: 3, March 1981); SMPTE, 1981
<span class="doi">10.5594/J01481</span>
</li>