Implementation of Closed Captioning System for Terrestrial UHD Based on ATSC 3.0

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: SMPTE Mot. Imag. J
Volume: 127, No. 4, pp. 38–44
Abstract: In South South Korea, terrestrial ultrahigh-definition (UHD) broadcasting using the ATSC 3.0 standard officially began at the end of May 2017. To provide closed captions for the UHD programs, we developed an ATSC 3.0 closed captioning system. The ATSC 3.0 closed caption standard is based on Internet Media Subtitles and Captions 1.0 (IMSC1), which is mainly used in online video streaming. Captions in the previous ATSC 1.0 standard were based on Consumer Electronics Association 708. The UHD programs broadcast on Korean UHD TV networks are simulcast on South Korea’s ATSC1 HD networks. Since the HD and UHD programs are the same except for their video quality, the UHD programs reuse captions from the HD programs, which are produced using live stenography. We implemented the ATSC3 closed captioning system, both for MPEG media transport and realtime object delivery over unidirectional transport, which are transport protocols in the ATSC 3.0 standard, and verified it by testing on commercial ATSC 3.0 UHD TV receivers. This is the world’s first development of the IMSC1 closed captioning system on terrestrial TV.
Publication Date: 2018-05-01
DOI: 10.5594/JMI.2018.2806518
ISSN: Print: 1545-0279 | Electronic: 2160-2492
Link: https://doi.org/10.5594/JMI.2018.2806518
Author(s): Yunhyoung Kim
Keyword(s): IMSC, TTML, Captions
Copyright: © 2018 SMPTE

Bibliographic Reference(s)

World Wide Web Consortium (W3C), “Timed Text Markup Language 1 (TTML1) (Second Edition).” [Online]. Sept. 2013. Available: https://www.w3.org/TR/ttml1/ EXTERNAL
World Wide Web Consortium (W3C), “TTML Profiles for Internet Media Subtitles and Captions 1.0 (IMSC1).” [Online]. Apr. 2016. Available: https://www.w3.org/TR/ttml-imsc1/ EXTERNAL
Advanced Television Systems Committte (ATSC), “Captions and Subtitles (A/343),” Dec. 2016. EXTERNAL
Consumer Electronics Association (CEA) 708-D, “Digital Television (DTV) Closed Captioning,” Electronic Industries Alliance, Aug. 2008. EXTERNAL
South Korea Ministry of Goverment Legislation, “Disability Discrimination Act Revision 3.” [Online]. Available: http://www.law.go.kr/lsInfoP.do?lsiSeq=105109&ancYd=20100511&ancNo=10280&ef Yd=20100511&nwJoYnInfo=N&efGubun=Y&chrCl sCd=010202#0000 EXTERNAL
“History of Closed Captioning,” National Captioning Institute. [Online]. Available: http://www.ncicap.org/about-us/histor yof-closed-captioning/ EXTERNAL

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Yunhyoung Kim; Implementation of Closed Captioning System for Terrestrial UHD Based on ATSC 3.0, SMPTE Motion Imaging Journal ( Volume: 127, Issue: 4, May 2018); SMPTE, 2018. Available at https://doi.org/10.5594/JMI.2018.2806518

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Yunhyoung Kim; Implementation of Closed Captioning System for Terrestrial UHD Based on ATSC 3.0, SMPTE Motion Imaging Journal ( Volume: 127, Issue: 4, May 2018); SMPTE, 2018. Available at https://doi.org/10.5594/JMI.2018.2806518

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<span class="citation">Yunhyoung Kim; <cite>Implementation of Closed Captioning System for Terrestrial UHD Based on ATSC 3.0</cite>, SMPTE Motion Imaging Journal ( Volume: 127, Issue: 4, May 2018); SMPTE, 2018. Available at <a href="https://doi.org/10.5594/JMI.2018.2806518" target="_blank" rel="noopener">https://doi.org/10.5594/JMI.2018.2806518</a></span>

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Yunhyoung Kim; Implementation of Closed Captioning System for Terrestrial UHD Based on ATSC 3.0, SMPTE Motion Imaging Journal ( Volume: 127, Issue: 4, May 2018); SMPTE, 2018
doi: 10.5594/JMI.2018.2806518
url: https://doi.org/10.5594/JMI.2018.2806518

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<li>
Yunhyoung Kim; <cite id="bib-10-5594-jmi-2018-2806518">Implementation of Closed Captioning System for Terrestrial UHD Based on ATSC 3.0</cite>, SMPTE Motion Imaging Journal ( Volume: 127, Issue: 4, May 2018); SMPTE, 2018
<span class="doi">10.5594/JMI.2018.2806518</span>
</li>