Playback Video Processing for a Composite Digital Videotape Recorder

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: SMPTE J
Volume: 101, No. 11, pp. 785–789
Abstract: The production videotape recorder (VTR) has, for some time, been expected to support many modes of operation other than normal play and record. These “off-speed” VTR modes include variable play, time compression, and still frame. To make this possible the output video signal must be passed through a video processing stage. Other uses for the output video processing electronics include the playback of noncolor frame edits and adjustment of chrominance gain and phase. While operating in these modes the television signal must be decoded to separate the chrominance and luminance, so that chrominance inversion and vertical interpolation can be applied to the signal to convert from an incoming field of one type to an outgoing field of a different type. This article describes the video playback processing used in a digital VTR where exceptional quality is required, and details are given of some improved methods of modifying the signal in a composite environment using 4fsc data sampling.
Publication Date: 1992-11-01
DOI: 10.5594/J02186
ISSN: Print: 0036-1682
Link: https://doi.org/10.5594/J02186
Author(s): Reginald OldershawAmpex Corp., Redwood City, CA 94063
Copyright: © 1992 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

Videotape Recording: Digital Component versus Digital Composite Recording [Active]
1. Clarke C. K. P. , “High Quality Decoding for PAL Inputs to Digital YUV Studios,” BBC Research Dept. Report, 1982/12, July 1982 . EXTERNAL
2. Clarke C. K. P. , “Digital Standards Conversion: Comparison of Colour Decoding Methods,” BBC Research Dept. Report, 1982/6, June 1982 . EXTERNAL
4. Croll M. G. , “The General Design of a Digital Still Storage System for Use with an Electronic Rostrum Colour Camera,” BBC Research Dept. Report, 1980/13, Nov. 1980 . EXTERNAL

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Reginald Oldershaw; Playback Video Processing for a Composite Digital Videotape Recorder, SMPTE Journal ( Volume: 101, Issue: 11, November 1992); SMPTE, 1992. Available at https://doi.org/10.5594/J02186

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Reginald Oldershaw; Playback Video Processing for a Composite Digital Videotape Recorder, SMPTE Journal ( Volume: 101, Issue: 11, November 1992); SMPTE, 1992. Available at https://doi.org/10.5594/J02186

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<span class="citation">Reginald Oldershaw; <cite>Playback Video Processing for a Composite Digital Videotape Recorder</cite>, SMPTE Journal ( Volume: 101, Issue: 11, November 1992); SMPTE, 1992. Available at <a href="https://doi.org/10.5594/J02186" target="_blank" rel="noopener">https://doi.org/10.5594/J02186</a></span>

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Reginald Oldershaw; Playback Video Processing for a Composite Digital Videotape Recorder, SMPTE Journal ( Volume: 101, Issue: 11, November 1992); SMPTE, 1992
doi: 10.5594/J02186
url: https://doi.org/10.5594/J02186

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<li>
Reginald Oldershaw; <cite id="bib-10-5594-j02186">Playback Video Processing for a Composite Digital Videotape Recorder</cite>, SMPTE Journal ( Volume: 101, Issue: 11, November 1992); SMPTE, 1992
<span class="doi">10.5594/J02186</span>
</li>