Cable Television in Japan
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Cable Television in Japan May 26, 2017 Japan Cable Laboratories Overview of Japanese Cable Television industry 2 Japanese Cable Television The first Japanese cable television station began operation in 1955, two years after Japan Broadcasting Corporation (NHK) started television broadcasting, to retransmit NHK programs to a spring resort 150 kilometers north of Tokyo. As of March 2015, cable television reaches 52.2% of Japanese households, with 29.2 million subscribers (households), of which 9.8 million subscribe to paid channels Retransmission Terrestrial TV and Broadcasting Satellite (BS) Cable Television Channels Community Channel News, sports, Local programming by movies, etc Cable TV stations Cable TV Station TV Station Video On Demand Internet & IP Telephony Fiscal year 2014 Number of Commercial Operators: 294 Total Commercial Revenues: 497.5 billion JYen 3 Yearly Increase of Cable Television Subscribers 〔10K households〕 〔Penetration %〕 3500 51.6 51.8 51.5 52.2 52.3 RF 50.4 3250 IP: MulticastRF方式 48 50 :IPマルチキャスト方 49.6 50 50.4 50.6 3000 44.9 48.8 49.8 96 ×式 Penetration 42.9 97 101 :普及率 46.7 109 98 2750 40.6 90 2852 ▲ :普及率(RFのみ)Penetration (RF) 44 2767 2817 38.2 42.3 70 2707 40 2500 2602 2656 35.9 40.3 46 2471 2250 33.2 38 23 17 2301 31.1 2194 2000 10 2061 30 26.8 1750 1913 1788 1500 21.8 1654 20 1514 1250 20 17 1300 1000 1044 943 750 789 10 500 250 0 0 101998年度 11 年度 200012年度 13 年度 14 2002年度 15 年度 162004年度 17 年度 18 2006年度 19 年度 202008年度 21 年度 201022年度 23年度 242012年度 25 年度 262014年度 272015年度 ※ 平成22年度までの統計値は、自主放送を行う旧許可施設及び旧電気通信役務利用放送法 の登録を受けた者の設備(旧有線役務利用放送設備) の加入世帯数、普及率の推移。 (Source: MIC) 4 Yearly Increase of Cable Television Revenue Total revenue 100 Million JYen (incl. telecom revenue ) 12,520 12,853 Cable TV revenue 12,000 Operating costs 10,358 10,567 Operating revenue 10,000 9,088 9,238 8,320 8,000 7,101 7,399 6,534 5,812 6,000 5,437 5,177 4,807 5,061 5,134 4,930 5,030 4,975 5,003 4,257 4,746 4,667 3,850 4,050 4,000 3,533 4,883 4,757 3,076 3,330 4,364 4,309 4,623 4,474 4,607 4,468 4,468 3,467 3,762 3,057 3,244 2,000 2,956 511 555 507 535 120 272 288 383 288 382 358 420 456 423 0 H14… H15… H16… H17… H18… H19… H20… H21… H22… H23… H24… H25… H26… H26… 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 (Fiscal) (Source: MIC) 5 Broadband Services Subscribers (10k subscribers) Fixed Broadband FTTH DSL CATV internet FWA 4,500 4,000 3,781 3,824 3,849 3,874 3,680 3,724 3,739 3,761 3,530 3,601 3,410 3,493 3,500 3,286 2,867 2,900 3,000 2,757 2,787 2,834 2,661 2,704 2,729 2,531 2,385 2,500 2,230 2,022 2,000 1,780 1,500 974 1,000 820 670 601 623 643 661 665 671 673 679 683 686 500 531 567 591 542 447 375 358 344 332 320 0 310 299 288 2010.3 2011.3 2012.3 2013.3 2014.3 2015.3 2015.6 2015.9 2015.12 2016.3 2016.6 2016.9 2016.12 (Source: MIC) 6 Evolution of Japanese Cable STB and Services 7 Evolution of Cable STB in Japan Accelerated evolution after 2008 1953 1960 1989 1996 2008 2010 2013 2014 2016 B/W Color TV Muse Digital TV IPTV (SD) (SD) (Analog HD) (SD/HD) Smart TV 4K/8K 1st Generation Digital STB Broadcasters Platform Google App HbbTV Play Store Hybridcast Smart TV Smart Single Platform Manufacturers Platform nd Google Samsung AppleTV acTVila 2 Generation STB TV Panasonic Home Network Hulu Smart TV compatible OTT Netflix DLNA • Downloadable applications Improved • Interactive with smartphones and home network YouTube UI/UX HTML5 DAE • ITU-T J.295/296 (Hybrid Cable STB) High High Quality Video Large Display, Less power consumption Large OLED LCD VR/AR 4 SD HD UHD K UHDTV • H.262 H.264 H.265 4K Video MPEG2 MPEG4 AVC HEVC • 5.1ch audio • ITU-T J.297 (4K Cable STB) 8 Smart TV services with 2nd Gen STB Cable Operator Internet Service Delivery Platform (SDP) Mobile NW HFC (DOCSIS) (3G, 3.9G, Content Meta or FTTH APP 4G), Wi-Fi data Internet Video Internet Radio Recom- Cable Portal Billing mend ID Search Interactive content UI Widget HTML5, Android Applications Common APPs (Games, Widgets, Tools, etc) 2nd Gen STB Target Ad. Smartphone & Tablet Wi-Fi Multiple DVR HOME NETWORK NAS Remote UI Multi- (2nd screen) Content to go device 9 3rd Generation STB 4K UHDTV Remote Viewing Multi- device on the road 3rd Gen STB Remote control EPG Personalized Portal Mirroring Services for and in collaboration with tablets and smartphones 10 4K Services in Japan 2014 2015 2016 2017 2018 2019 2020 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q Channel 4K (Experimental Satellite NexTV-F Service on CS 124/128 ) Broadcasters Terrestrial No Plan 国内における4Kサービス取り組み状況 Broadcasting Experimental 4K/8K Commercial 4K/8K Satellite (ch.17) (RHCP & LHCP) 110°E Communications Experimental 4K Commercial 4K Satellite 110°E (JSAT-110A LHCP) (LHCP) March 2015 CS124°/128° Sky Perfect 4K (Commercial Service) Oct 2014 Telco NTT Plala ③ IP VoD Hikari TV 4K AcTVila Dec 2014 4K AcTVila IP VoD BS ch.17 (TS) Cable TV Cable Cable TV 4K Retransmission of Cable 4K(RF) Channel 4K (RF/IP) Cable 4K(IP) Cable TV 4K Apr 2016 IP VOD Milplus 4K Cable TV 4K May 2015 RF VOD J:COM On Demand 11 4K services supported by 3rd Gen. STB • Cable 4K RF & IP – Cable 4K RF with 64 bit encryption – Cable 4K IP with Marlin CAS/DRM (AES128 encryption) • New cable channels with AES 128 encryption (ACAS) – In anticipation of Hollywood 4K movies • Retransmission of Advanced Satellite Broadcasting – AES 128 encryption (ACAS) – MMT (MPEG Media Transport) in place of MPEG2 TS • IP VoD – MPEG DASH – Common Encryption Scheme (CENC) (ITU-T J.1005/1006) 12 Cable 4K Content Distribution Scheme Cable TV Content Production stations Providers Japan Cable and Telecommunications Association (JCTA) Compilation Policy making and Cable 4K Platform supervision for content production and compilation NW NW Distribution RF IP RF IP JDSJDS局局 JDSJDS局局 CableJDS局 CableJDS局 Headend Headend 13 Cable 4K RF Transmission System 25Mbit/s bitrate 4K TV Content IP Transmission IP Transmission Playout Playout A Storage Scrambler HEVC ( Multiplexer ( 64 Content File IP Encoder TS Q → → A B TS IP) M Content ) A‘ B‘ C‘ Channels STB C A‘ B’ C’ NIT AJC-CMS All Japan Cable EPG Content CAS Management PSI/SI ECM/EMM System Subscriber CAS Server Management System (SMS) Content Cable Platform Cable Operator HE Subscriber 14 Cable 4K IP Transmission System Content 4K TV Servers Storage Playout A HEVC File L3/SW Content Encoder B Configuration CMTS Content A‘ B‘ C‘ SI L3/SW OLT C SNTP STB DRM (Marlin) AJC-CMS Subscriber All Japan Cable Management Content Management System (SMS) System Authentication & Authorization Permission, etc Server Content Cable Platform Cable Operator HE Subscriber 15 New cables channels with AES128 • Use of ACAS (AES 128 Encryption) – This is in response to US MovieLabs Specification for Enhanced Content Protection, which defines the following, among others: • Use of a cypher of AES 128 or better • Can revoke and renew versions of client component • Provision of hardware root of trust (HRoT) – The same CAS system as the Advanced Satellite Broadcasting (next slide) • Use of H.265 HEVC and H.264/AVC – This enables up to four times more efficient bandwidth usage than the existing cable channels. 16 Retransmission of advanced satellite service • Ten (10) 4K channels on Japanese Broadcasting Satellite (BS) starting in December 2018 – Ten (10) 4K channels (6 on right-hand circular polarization (RHCP), 4 on left-hand circular pol (LHCP)) – One (1) 8K channel on LHCP • New equipment required to carry those services over cable: – HE and STB to send and receive MMT (MPEG Media Transport) replacing MPEG-2 TS – CAS system with 128bit AES (ACAS) – HDR TV (HLG) – For 8K, HE and STB capable of channel bonding scheme as defined in Annex A of ITU-T J.183 17 MMT (MPEG Media Transport) • ISO/IEC 23008 (March 2014) MPEG-H: High efficiency coding and media delivery in heterogeneous environments • MMT is defined as Part 1 of MPEG-H • MPEG-H suite includes HEVC (H.265) as Part 2 Part 1: MPEG Media Transport (MMT) Part 2: High Efficiency Video Coding (HEVC) Part 3: 3D Audio Part 10: FEC Codes for MPEG Media Transport Part 11: Composition coding for MMT 18 Advantage of MMT • MMT has the following features which overcome the shortcomings of MPEG-2 TS: 1. Can synchronize streams from different sources (e.g. streams from broadcasting and broadband), using NTP 2. Uses variable length packets – suitable for transporting high bit rate streams or large size files Broadcast NW NTP SI MMTP リプレイ URL Time Sync NTP SI MMTP Telco NW Example:Main video via broadcasting network, while videos from different cameras via telco network 19 MMT Protocol Stack MMT packets are annexed to IP header IP packets are multiplexed* using TLV (Type Length Value) for transmission over digital broadcasting channel *ITU-R BT.1869 EPG MMT NTP NTP Sub- Video Audio Apps title Content (Timing) - SI Download TMCC AAC HEVC Sub-title HTML5 ALS Encoding MMT TLV UDP/IP TLV Broadcasting Channel Source: ARIB STD-B60 “Media Transport on Digital Broadcasting” TMCC: Transmission and Multiplexing Configuration and Control (ISDB system parameters; not on cable channel) 20 Broadcasters’ CAS Security Chip (ACAS) HRoT by means of a dedicated hardware chip Path between SoC and the CAS chip is securely encrypted CAS software renewable by software download Software Download CAS Security SoC Chip SAC (authenticated and encrypted) ・Scrambler: AES 128 ・CAS: standardized (one type) ・SoC: not dependent on CAS security chip 21 HDR(High Dynamic Range) HDR is a technology to extend the luminance of video signal Two main standards to define HDR transfer functions – HLG :Hybrid Log Gamma – PQ: Perceptual Quantization