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SMPTE Meetings and Conferences ( February 1992)
[ACTIVE]

Improvement of Picture Quality in Nonstandard Speed Play of Digital VTR

Metadata

Publisher
SMPTE — White Plains, NY
Doc Type
Conference Paper
Content Type
Original Research
Volume
1992, No. 25, pp. 233–248
Abstract
In nonstandard speed play of a composite video tape recorder (VTR), the reproduced video is converted to a standard TV signal, since fields in the reproduced video are skipped or repeated. For 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 inter-field signals, has been developed. Based on these techniques, three kinds of gate arrays were developed and employed in a D2 VTR for NTSC signals. Consequently above problems were solved and picture quality was remarkably improved.
Publication Date
1992-02-01
DOI
10.5594/M00730
Link
https://doi.org/10.5594/M00730
Author(s)
Hitoaki OwashiImage & Media System Laboratory, Hitachi, Ltd. Yokohama, Japan
Kyoichi HosokawaImage & Media System Laboratory, Hitachi, Ltd. Yokohama, Japan
Kazuhiko YoshizawaImage & Media System Laboratory, Hitachi, Ltd. Yokohama, Japan
Yoshizumi WatataniImage & Media System Laboratory, Hitachi, Ltd. Yokohama, Japan
Shoji OhnoHDTV Systems Division, Hitachi, Ltd. Katsuta, Japan
Toshiaki KawamuraHDTV Systems Division, Hitachi, Ltd. Tokyo, Japan
Copyright
© 1992 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

  • 1. Owashi H. , “An Integrated Digital Y/C Separator for S-VHS VCR,” Proc. of the IEEE 1989 CICC, pp. 11.6.1 – 11.6.4 , May, 1989 . EXTERNAL
  • 2. Okada T. , “Flicker-free Non Interlaced Receiving System for Standard Color TV Signals,” IEEE Trans. on CE , Vol. CE-31 , No. 3 , pp. 240 – 254 , August 1985 . EXTERNAL
  • 3. Oldershaw R. , “Video Processing for a Composite Digital Video Tape Recorder,” Symposium Record, Broadcast Sessions, 17th International Television Symposium, Montreux pp. 98 – 108 , June 1991 . EXTERNAL
  • 4. Hirahata S. “IDTV System Suitable for both Standard and Non-standard NTSC Signals,” ITEJ Technical Report Vol. 12 , No. 51 , pp. 13 – 18 , TEBS' 88-39, Nov. 1988 . EXTERNAL
  • 5. Sugiyama M. , “High Quality Digital TV with Frame Store Processing,” IEEE Trans. on CE , Vol. CE-33 , No. 3 , pp. 98 – 108 , August 1987 . EXTERNAL
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Hitoaki Owashi, Kyoichi Hosokawa, Kazuhiko Yoshizawa, Yoshizumi Watatani, Shoji Ohno, and Toshiaki Kawamura; Improvement of Picture Quality in Nonstandard Speed Play of Digital VTR, SMPTE Meetings and Conferences ( February 1992); SMPTE, 1992. Available at https://doi.org/10.5594/M00730
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Hitoaki Owashi, Kyoichi Hosokawa, Kazuhiko Yoshizawa, Yoshizumi Watatani, Shoji Ohno, and Toshiaki Kawamura; Improvement of Picture Quality in Nonstandard Speed Play of Digital VTR, SMPTE Meetings and Conferences ( February 1992); SMPTE, 1992. Available at https://doi.org/10.5594/M00730

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Hitoaki Owashi, Kyoichi Hosokawa, Kazuhiko Yoshizawa, Yoshizumi Watatani, Shoji Ohno, and Toshiaki Kawamura; Improvement of Picture Quality in Nonstandard Speed Play of Digital VTR, SMPTE Meetings and Conferences ( February 1992); SMPTE, 1992. Available at https://doi.org/10.5594/M00730
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<span class="citation">Hitoaki Owashi, Kyoichi Hosokawa, Kazuhiko Yoshizawa, Yoshizumi Watatani, Shoji Ohno, and Toshiaki Kawamura; <cite>Improvement of Picture Quality in Nonstandard Speed Play of Digital VTR</cite>, SMPTE Meetings and Conferences ( February 1992); SMPTE, 1992. Available at <a href="https://doi.org/10.5594/M00730" target="_blank" rel="noopener">https://doi.org/10.5594/M00730</a></span>

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Hitoaki Owashi, Kyoichi Hosokawa, Kazuhiko Yoshizawa, Yoshizumi Watatani, Shoji Ohno, and Toshiaki Kawamura; Improvement of Picture Quality in Nonstandard Speed Play of Digital VTR, SMPTE Meetings and Conferences ( February 1992); SMPTE, 1992
doi: 10.5594/M00730
url: https://doi.org/10.5594/M00730
Snippet:
<li>
Hitoaki Owashi, Kyoichi Hosokawa, Kazuhiko Yoshizawa, Yoshizumi Watatani, Shoji Ohno, and Toshiaki Kawamura; <cite id="bib-10-5594-m00730">Improvement of Picture Quality in Nonstandard Speed Play of Digital VTR</cite>, SMPTE Meetings and Conferences ( February 1992); SMPTE, 1992
<span class="doi">10.5594/M00730</span>
</li>