Improvement of Picture Quality in Nonstandard Speed Play of a Digital VTR

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: In the nonstandard speed play of a composite videotape recorder (VTR), the reproduced video is converted to a standard TV signal, since fields in the reproduced video are skipped or repeated. In the field-conversion processing, a Y/C separation circuit and a line-interpolation circuit are used. In a conventional processor, the picture quality is deteriorated due to vertical displacement of the image and lower resolution. To remove these deficiencies a motion-adaptive field-conversion circuit, which uses interfield signals, has been developed. Based on these techniques, three kinds of gate arrays were developed and employed in a D-2 VTR for NTSC signals. Consequently, these problems were solved and the picture quality was remarkably improved.
Publication Date: 1992-10-01
DOI: 10.5594/J02202
Link: https://doi.org/10.5594/J02202
Author(s): H. Owashi, K. Hosokawa, K. Yoshizawa, Y. Watatani, S. Ohno, T. Kawamura

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H. Owashi, K. Hosokawa, K. Yoshizawa, Y. Watatani, S. Ohno, and T. Kawamura; Improvement of Picture Quality in Nonstandard Speed Play of a Digital VTR, SMPTE Journal ( Volume: 101, Issue: 10, October 1992); SMPTE, 1992. Available at https://doi.org/10.5594/J02202

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H. Owashi, K. Hosokawa, K. Yoshizawa, Y. Watatani, S. Ohno, and T. Kawamura; Improvement of Picture Quality in Nonstandard Speed Play of a Digital VTR, SMPTE Journal ( Volume: 101, Issue: 10, October 1992); SMPTE, 1992. Available at https://doi.org/10.5594/J02202

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<span class="citation">H. Owashi, K. Hosokawa, K. Yoshizawa, Y. Watatani, S. Ohno, and T. Kawamura; <cite>Improvement of Picture Quality in Nonstandard Speed Play of a Digital VTR</cite>, SMPTE Journal ( Volume: 101, Issue: 10, October 1992); SMPTE, 1992. Available at <a href="https://doi.org/10.5594/J02202" target="_blank" rel="noopener">https://doi.org/10.5594/J02202</a></span>

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<li>
H. Owashi, K. Hosokawa, K. Yoshizawa, Y. Watatani, S. Ohno, and T. Kawamura; <cite id="bib-10-5594-j02202">Improvement of Picture Quality in Nonstandard Speed Play of a Digital VTR</cite>, SMPTE Journal ( Volume: 101, Issue: 10, October 1992); SMPTE, 1992
<span class="doi">10.5594/J02202</span>
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