Electronic Brightness Contouring

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: An unorthodox circuit technique is described, in which a standard pentode amplifier is operated “below the knee” of the plate characteristic to obtain a reversal of transfer characteristic slope. Projecting selected amplitude increments of a video signal over this reversing characteristic and deleting remaining video portions not in the immediate vicinity of the reversal, results in a signal having “off” response to levels on both sides of the input incremental level and a suprisingly well defined “on” response to the included level. The contour or “outline” signal thus derived may be added to the input signal to form a composite display in which the level of the contour may be continuously varied for observation or analysis.
Publication Date: 1961-01-01
DOI: 10.5594/J14380
Link: https://doi.org/10.5594/J14380
Author(s): R. L. Hallows

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R. L. Hallows; Electronic Brightness Contouring, Journal of the SMPTE ( Volume: 70, Issue: 1, January 1961); SMPTE, 1961. Available at https://doi.org/10.5594/J14380

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R. L. Hallows; Electronic Brightness Contouring, Journal of the SMPTE ( Volume: 70, Issue: 1, January 1961); SMPTE, 1961. Available at https://doi.org/10.5594/J14380

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R. L. Hallows; Electronic Brightness Contouring, Journal of the SMPTE ( Volume: 70, Issue: 1, January 1961); SMPTE, 1961. Available at https://doi.org/10.5594/J14380

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<span class="citation">R. L. Hallows; <cite>Electronic Brightness Contouring</cite>, Journal of the SMPTE ( Volume: 70, Issue: 1, January 1961); SMPTE, 1961. Available at <a href="https://doi.org/10.5594/J14380" target="_blank" rel="noopener">https://doi.org/10.5594/J14380</a></span>

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Preview:

R. L. Hallows; Electronic Brightness Contouring, Journal of the SMPTE ( Volume: 70, Issue: 1, January 1961); SMPTE, 1961
doi: 10.5594/J14380
url: https://doi.org/10.5594/J14380

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<li>
R. L. Hallows; <cite id="bib-10-5594-j14380">Electronic Brightness Contouring</cite>, Journal of the SMPTE ( Volume: 70, Issue: 1, January 1961); SMPTE, 1961
<span class="doi">10.5594/J14380</span>
</li>