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Journal of the Society of Motion Picture and Television Engineers ( Volume: 55, Issue: 1, July 1950)
[ACTIVE]

An Experimental Electronic Background TV Projection System

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
The system is an electronic version of the process screen now used in motion pictures and television. Two television cameras may be mixed without superimposition. A contrasting white background screen in back of the foreground subject, which is always brighter than the subject, provides contrasting information. This information keys the two cameras on or off through an electronic switch. Details of the signal selection, modification of the keying signals and the use of delay lines are discussed.
Publication Date
1950-07-01
DOI
10.5594/J05175
Link
https://doi.org/10.5594/J05175
Author(s)
Wayne R. Johnson
Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/10.5594-J05175.json

Reference this Doc

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Wayne R. Johnson; An Experimental Electronic Background TV Projection System, Journal of the Society of Motion Picture and Television Engineers ( Volume: 55, Issue: 1, July 1950); SMPTE, 1950. Available at https://doi.org/10.5594/J05175
Snippet:
Wayne R. Johnson; An Experimental Electronic Background TV Projection System, Journal of the Society of Motion Picture and Television Engineers ( Volume: 55, Issue: 1, July 1950); SMPTE, 1950. Available at https://doi.org/10.5594/J05175

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Wayne R. Johnson; An Experimental Electronic Background TV Projection System, Journal of the Society of Motion Picture and Television Engineers ( Volume: 55, Issue: 1, July 1950); SMPTE, 1950. Available at https://doi.org/10.5594/J05175
Snippet:
<span class="citation">Wayne R. Johnson; <cite>An Experimental Electronic Background TV Projection System</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 55, Issue: 1, July 1950); SMPTE, 1950. Available at <a href="https://doi.org/10.5594/J05175" target="_blank" rel="noopener">https://doi.org/10.5594/J05175</a></span>

SMPTE Icon SMPTE's HTML Pub

Preview:
Wayne R. Johnson; An Experimental Electronic Background TV Projection System, Journal of the Society of Motion Picture and Television Engineers ( Volume: 55, Issue: 1, July 1950); SMPTE, 1950
doi: 10.5594/J05175
url: https://doi.org/10.5594/J05175
Snippet:
<li>
Wayne R. Johnson; <cite id="bib-10-5594-j05175">An Experimental Electronic Background TV Projection System</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 55, Issue: 1, July 1950); SMPTE, 1950
<span class="doi">10.5594/J05175</span>
</li>