A Chrominance Noise Meter for Videotape Recorders

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPTE
Volume: 88, No. 4, pp. 224–227
Abstract: Because the noise contained in the output video signal from a videotape recorder is a type of modulation noise, its power increases with the amplitude of the signal to be recorded. For this reason, in measuring the chrominance noise of a VTR, it is necessary to apply a video signal with a color subcarrier of constant amplitude. A chrominance noise meter has now been developed that includes the proper test signal generator and supplies a constant-amplitude, constant-phase subcarrier in order to accurately determine the quality of the reproduced signal. The construction and operation of the meter are described, and some examples of chrominance noise values determined with this equipment for various types of VTR are presented.
Publication Date: 1979-04-01
DOI: 10.5594/J10409
ISSN: Print: 0036-1682
Link: https://doi.org/10.5594/J10409
Author(s): Shozo NakagawaNHK Technical Research Laboratories, 1-10-11 Kinuta Setagaya-ku, Tokyo 157, Japan
Copyright: © 1979 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

A New Random Noise Measuring Instrument for Television Signals [Active]
Quadruplex Video Noise and Measurement Techniques [Active]
3. Nakagawa S. , “A Method for Measuring Chrominance Noise,” NHK Laboratories Note, Serial No. 208, Feb. 1977 . EXTERNAL
4. Allnatt J. W. Prosser R. D. , “Subjective Quality of Color-Television Pictures Impaired by Random Noise,” PROC. IEE , 113 : 551 – 557 , Apr. 1966 . EXTERNAL

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Shozo Nakagawa; A Chrominance Noise Meter for Videotape Recorders, SMPTE Journal ( Volume: 88, Issue: 4, April 1979); SMPTE, 1979. Available at https://doi.org/10.5594/J10409

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Shozo Nakagawa; A Chrominance Noise Meter for Videotape Recorders, SMPTE Journal ( Volume: 88, Issue: 4, April 1979); SMPTE, 1979. Available at https://doi.org/10.5594/J10409

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Shozo Nakagawa; A Chrominance Noise Meter for Videotape Recorders, SMPTE Journal ( Volume: 88, Issue: 4, April 1979); SMPTE, 1979. Available at https://doi.org/10.5594/J10409

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<span class="citation">Shozo Nakagawa; <cite>A Chrominance Noise Meter for Videotape Recorders</cite>, SMPTE Journal ( Volume: 88, Issue: 4, April 1979); SMPTE, 1979. Available at <a href="https://doi.org/10.5594/J10409" target="_blank" rel="noopener">https://doi.org/10.5594/J10409</a></span>

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Shozo Nakagawa; A Chrominance Noise Meter for Videotape Recorders, SMPTE Journal ( Volume: 88, Issue: 4, April 1979); SMPTE, 1979
doi: 10.5594/J10409
url: https://doi.org/10.5594/J10409

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<li>
Shozo Nakagawa; <cite id="bib-10-5594-j10409">A Chrominance Noise Meter for Videotape Recorders</cite>, SMPTE Journal ( Volume: 88, Issue: 4, April 1979); SMPTE, 1979
<span class="doi">10.5594/J10409</span>
</li>