BEGIN:VCALENDAR VERSION:2.0 PRODID:-//swoogo.com//NONSGML kigkonsult.se iCalcreator 2.41.90// CALSCALE:GREGORIAN UID:66666264-6239-4635-a163-616565356233 BEGIN:VEVENT UID:b3ed230ce2abf1a61f65fb78b377f7abdeecbaa1@swoogo.com DTSTAMP:20260813T002434Z DESCRIPTION:In December 2018\, 4K/8K Ultra-High-Definition TV (UHDTV) satel lite broadcasts started in Japan\, where the 8K UHDTV broadcasts are the f irst in the world. The 8K UHDTV system requires transmission channels with much larger capacity than the conventional 2K HDTV system. \nFor these re asons\, we developed a new broadcasting system that employs 16APSK modulat ion scheme to achieve high-frequency efficiency and MMT protocol with high compatibility to IP and HEVC video coding with a high efficiency compress ion performance.\nFor the maximum use of the existing satellite TV frequen cy band\, we newly employ left-handed circularly polarized (LHP) radio wav es in addition to right-handed circularly polarized (RHP) radio waves that have been used for satellite broadcasts in Japan. For reception\, new sat ellite reception antennas that enable the reception of LHP and RHP satelli te radio waves are developed. The IF frequency band of the antenna of the Outdoor Unit (ODU) has been expanded from 2.1 GHz to 3.2 GHz.\nAntenna com ponent manufacturers produce many kinds of accessories\, such as receiving antennas\, boosters\, multiway splitters\, and F-connector outlets\, that meet the performance required in the industry standard 'SH marking system (Quality approval mark for Super Hi-vision(4K/8K) reception)”.Since the S H mark indicates that the products have the sufficient performance to rece ive 4K/8K UHDTV broadcasts stably with robustness to the interference caus ed by 2.4-GHz-band Wi-Fi\, etc.\, the products also achieve low transmissi on loss in the expanded higher frequency band. An SH mark sticker on a pro duct helps consumers to choose appropriate products for the reception of 4 K/8K UHDTV satellite broadcasts.\nThe new broadcasting satellite BSAT-4a w ith 200-W-class TWTAs was launched on September 30\, 2017 (Japan time).\nT hese TWTAs are operated at an output back-off of 2.2 dB to fully exploit t he performance of 16APSK.\nFor large-scale apartment complexes\, there are cases where existing coaxial cables and RF boosters don’t have sufficient bandwidth for 4K/8K satellite UHDTV broadcasts to transfer satellite TV s ignals to each household from a shared dish antenna on the rooftop. \nThe replacement of such in-house equipment is hugely burdensome. Currently\, s ome reasonably priced plastic-optical fibers and frequency converters are under development as new in-house transmitting equipment.\nIn this present ation\, we introduce details of the technical aspects of the equipment and technical standards that support the new 4K/8K satellite UHDTV broadcast in Japan. DTSTART:20191023T190000Z DTEND:20191023T193000Z LAST-MODIFIED:20260813T002434Z LOCATION:Sacramento Room SEQUENCE:0 STATUS:CONFIRMED SUMMARY:Development of New 4K/8K UHDTV Satellite Broadcasting System in Jap an TRANSP:OPAQUE X-ALT-DESC;FMTTYPE=text/html:In December 2018\, 4K/8K Ultra-High-Definition TV (UHDTV) satellite broadcasts started in Japan\, where the 8K UHDTV bro adcasts are the first in the world. The 8K UHDTV system requires transmiss ion channels with much larger capacity than the conventional 2K HDTV syste m.
\n For these reasons\, we developed a new broadcasting system that employs 16APSK modulation scheme to achieve high-frequency efficiency and MMT protocol with high compatibility to IP and HEVC video coding with a high efficiency compression performance.
\nFor the maximum use of the existing satellite TV frequency band\, we newly employ left-handed cir cularly polarized (LHP) radio waves in addition to right-handed circularly polarized (RHP) radio waves that have been used for satellite broadcasts in Japan. For reception\, new satellite reception antennas that enable the reception of LHP and RHP satellite radio waves are developed. The IF fre quency band of the antenna of the Outdoor Unit (ODU) has been expanded fro m 2.1 GHz to 3.2 GHz.
\n Antenna component manufacturers produce m any kinds of accessories\, such as receiving antennas\, boosters\, multiwa y splitters\, and F-connector outlets\, that meet the performance required in the industry standard 'SH marking system (Quality approval mark for Su per Hi-vision(4K/8K) reception)”.Since the SH mark indicates that the prod ucts have the sufficient performance to receive 4K/8K UHDTV broadcasts sta bly with robustness to the interference caused by 2.4-GHz-band Wi-Fi\, etc .\, the products also achieve low transmission loss in the expanded higher frequency band. An SH mark sticker on a product helps consumers to choose appropriate products for the reception of 4K/8K UHDTV satellite broadcast s.
\n The new broadcasting satellite BSAT-4a with 200-W-class TWTA s was launched on September 30\, 2017 (Japan time).
\n These TWTAs a re operated at an output back-off of 2.2 dB to fully exploit the performan ce of 16APSK.
\nFor large-scale apartment complexes\, there are cases where existing coaxial cables and RF boosters don’t have sufficient bandw idth for 4K/8K satellite UHDTV broadcasts to transfer satellite TV signals to each household from a shared dish antenna on the rooftop.
\n Th e replacement of such in-house equipment is hugely burdensome. Currently\, some reasonably priced plastic-optical fibers and frequency converters ar e under development as new in-house transmitting equipment.
\n In this presentation\, we introduce details of the technical aspects of the e quipment and technical standards that support the new 4K/8K satellite UHDT V broadcast in Japan.
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