Picture Quality Criteria, Error Statistics and Error Correction for the D-1 Format DVTR

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Publisher: SMPTE — White Plains, NY
Doc Type: Conference Paper
Content Type: Original Research
Volume: 1986, No. 27, pp. 89–102
Abstract: The generally accepted picture quality requirement of the D-1 format (4:2:2) DVTR was that it should provide a quality of 4.5 on the CCIR 5 point scale, after 20 generations. It was also understood that there should be margin to allow for tape degeneration in the field, and also for “difficult” pictures. If and when the quality degraded below this level it should be gradual and graceful. From several preliminary experiments and demonstrations it was clear that there was a gap between the raw error rate that could be achieved from a DVTR, at an acceptable tape consumption, and that which was required to meet the picture quality expected. Some form of error management would be required. This would take the form of error correction to handle the regularly expected errors and error concealment to handle burst errors which overloaded the error correction system. The latter would also provide graceful degradation when conditions fell outside of the normally specified range, such as damaged tape or a clogged head.
Publication Date: 1986-02-01
DOI: 10.5594/M00770
Link: https://doi.org/10.5594/M00770
Author(s): John P. WatneyAmpex Corporation Redwood City, California
bio
John Watney was born and educated in South Africa receiving BSc. (E.E.) and MSc. (Phys.) degrees from the University of Cape Town. He worked for Marconi's Wireless Telegraph Company in England and for the CSIR in South Africa before joining Ampex in 1964. While at Ampex, he has worked in the Videofile Division, the Data Systems Division and the Audio Video Systems Division, as well as earning an Engineer's Degree from Stanford University. His interests center around things digital: recording, communication and control.
Copyright: © 1986 Society of Motion Picture and Television Engineers, Inc.

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John P. Watney; Picture Quality Criteria, Error Statistics and Error Correction for the D-1 Format DVTR, SMPTE Meetings and Conferences ( February 1986); SMPTE, 1986. Available at https://doi.org/10.5594/M00770

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John P. Watney; Picture Quality Criteria, Error Statistics and Error Correction for the D-1 Format DVTR, SMPTE Meetings and Conferences ( February 1986); SMPTE, 1986. Available at https://doi.org/10.5594/M00770

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<span class="citation">John P. Watney; <cite>Picture Quality Criteria, Error Statistics and Error Correction for the D-1 Format DVTR</cite>, SMPTE Meetings and Conferences ( February 1986); SMPTE, 1986. Available at <a href="https://doi.org/10.5594/M00770" target="_blank" rel="noopener">https://doi.org/10.5594/M00770</a></span>

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John P. Watney; Picture Quality Criteria, Error Statistics and Error Correction for the D-1 Format DVTR, SMPTE Meetings and Conferences ( February 1986); SMPTE, 1986
doi: 10.5594/M00770
url: https://doi.org/10.5594/M00770

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<li>
John P. Watney; <cite id="bib-10-5594-m00770">Picture Quality Criteria, Error Statistics and Error Correction for the D-1 Format DVTR</cite>, SMPTE Meetings and Conferences ( February 1986); SMPTE, 1986
<span class="doi">10.5594/M00770</span>
</li>