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Journal of the Society of Motion Picture and Television Engineers ( Volume: 56, Issue: 2, February 1951)
[ACTIVE]

Semiautomatic Color Analyzer

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
A semiautomatic color analyzer is described for rapidly determining the extent of unbalance, or deviation from “type,” of a processed color negative or color positive monopack film. A standardized light source, a rotating color filter having three sectors which transmit narrow spectral bands of blue, green and red light, a multiplier-type phototube and amplifier, and a cathode-ray tube are employed. The sweep circuit of the cathode-ray tube is synchronized with the rotating filter wheel so that a horizontal straight-line image is produced when a gray or near-gray density of a “balanced” sample is in the light path. A cathode-ray tube image which deviates from a horizontal straight-line image indicates unbalance in a test sample, whereupon correction filters can be introduced in the light path by means of servomechanism devices to produce a horizontal straight-line or “balanced” condition.
Publication Date
1951-02-01
DOI
10.5594/J01849
Link
https://doi.org/10.5594/J01849
Author(s)
Lloyd E. Varden
Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/10.5594-J01849.json

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Lloyd E. Varden; Semiautomatic Color Analyzer, Journal of the Society of Motion Picture and Television Engineers ( Volume: 56, Issue: 2, February 1951); SMPTE, 1951. Available at https://doi.org/10.5594/J01849
Snippet:
Lloyd E. Varden; Semiautomatic Color Analyzer, Journal of the Society of Motion Picture and Television Engineers ( Volume: 56, Issue: 2, February 1951); SMPTE, 1951. Available at https://doi.org/10.5594/J01849

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Lloyd E. Varden; Semiautomatic Color Analyzer, Journal of the Society of Motion Picture and Television Engineers ( Volume: 56, Issue: 2, February 1951); SMPTE, 1951. Available at https://doi.org/10.5594/J01849
Snippet:
<span class="citation">Lloyd E. Varden; <cite>Semiautomatic Color Analyzer</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 56, Issue: 2, February 1951); SMPTE, 1951. Available at <a href="https://doi.org/10.5594/J01849" target="_blank" rel="noopener">https://doi.org/10.5594/J01849</a></span>

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Preview:
Lloyd E. Varden; Semiautomatic Color Analyzer, Journal of the Society of Motion Picture and Television Engineers ( Volume: 56, Issue: 2, February 1951); SMPTE, 1951
doi: 10.5594/J01849
url: https://doi.org/10.5594/J01849
Snippet:
<li>
Lloyd E. Varden; <cite id="bib-10-5594-j01849">Semiautomatic Color Analyzer</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 56, Issue: 2, February 1951); SMPTE, 1951
<span class="doi">10.5594/J01849</span>
</li>