Cable Television in Japan. May 26, 2017 Japan Cable Laboratories

Transcription

1 Cable Television in Japan May 26, 2017 Japan Cable Laboratories

2 Overview of Japanese Cable Television industry 2

3 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 Cable Television Channels News, sports, movies, etc Retransmission Terrestrial TV and Broadcasting Satellite (BS) Community Channel Local programming by Cable TV stations Cable TV Station Video On Demand TV Station Fiscal year 2014 Number of Commercial Operators: 294 Total Commercial Revenues: billion JYen Internet & IP Telephony 3

4 Yearly Increase of Cable Television Subscribers 10K households Penetration % 式 20 RF IP :RF Multicast 方式 Penetration Penetration (RF) :IP マルチキャスト方 : 普及率 : 普及率 (RFのみ) 年度 11 年度 年度 13 年度 年度 15 年度 年度 17 年度 年度 19 年度 年度 21 年度 年度 23 年度 年度 25 年度 年度 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

5 Yearly Increase of Cable Television Revenue 100 Million JYen 12,000 10,000 8,000 6,000 4,000 2, ,257 4,807 5,061 5,812 3,076 Total revenue (incl. telecom revenue ) Cable TV revenue Operating costs Operating revenue 6,534 3,330 3,533 3,850 4,050 7,101 7,399 2,956 3,057 3,244 3,467 3,762 4,364 4,309 8,320 9,088 9,238 10,358 10,567 12,520 12,853 4,746 4,667 5,134 5,437 5,177 4,930 5,030 4,975 5,003 4,623 4,883 4,757 4,474 4,607 4,468 4, H14 H15 H16 H17 H18 H19 H20 H21 H22 H23 H24 H25 H26 H (Fiscal) (Source: MIC) 5

6 Broadband Services Subscribers (10k subscribers) Fixed Broadband FTTH DSL CATV internet FWA 4,500 4,000 3,500 3,286 3,410 3,493 3,530 3,601 3,680 3,724 3,739 3,761 3,781 3,824 3,849 3,874 3,000 2,500 2,000 1,780 2,022 2,230 2,385 2,531 2,661 2,704 2,729 2,757 2,787 2,834 2,867 2,900 1, , (Source: MIC) 6

7 Evolution of Japanese Cable STB and Services 7

8 Evolution of Cable STB in Japan Smart TV B/W (SD) Color TV (SD) Google Play OTT Single Platform Google TV YouTube Muse (Analog HD) AppleTV Hulu Digital TV (SD/HD) IPTV 1 st Generation Digital STB App Store Netflix Improved UI/UX Broadcasters Platform HbbTV Hybridcast Manufacturers Platform Samsung actvila Panasonic Home Network HTML5 DLNA DAE Accelerated evolution after 2008 Smart TV K/8K 2 nd Generation STB Smart TV compatible Downloadable applications Interactive with smartphones and home network ITU-T J.295/296 (Hybrid Cable STB) High Quality Video SD H.262 MPEG2 Large Display, Less power consumption Large LCD HD OLED H.264 MPEG4 AVC UHD H.265 HEVC VR/AR 4K UHDTV 4K Video 5.1ch audio ITU-T J.297 (4K Cable STB) 8

9 Smart TV services with 2 nd Gen STB Cable Operator Internet Video Internet Radio Internet HFC (DOCSIS) or FTTH Cable Portal APP Recommend ID Content Service Delivery Platform (SDP) Search Meta data Billing Mobile NW (3G, 3.9G, 4G), Wi-Fi Interactive content Widget UI 2 nd Gen STB Common APPs (Games, Widgets, Tools, etc) Target Ad. HTML5, Android Applications Smartphone & Tablet Wi-Fi Multiple DVR NAS Content to go HOME NETWORK Multidevice Remote UI (2 nd screen) 9

10 3 rd Generation STB 4K UHDTV Multidevice Remote Viewing on the road 3 rd Gen STB Remote control EPG Personalized Portal Mirroring Services for and in collaboration with tablets and smartphones 10

11 4K Services in Japan Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q NexTV-F Channel 4K (Experimental Satellite Service on CS 124/128 ) Broadcasters Telco Cable TV Terrestrial Broadcasting Satellite 110 E Communications Satellite 110 E CS124 /128 NTT Plala IP VoD AcTVila IP VoD Cable TV 4K Cable TV 4K IP VOD Cable TV 4K RF VOD Oct 2014 No Plan 国内における 4K サービス取り組み状況 March 2015 Hikari TV 4K Dec K AcTVila Retransmission of Channel 4K (RF/IP) May 2015 Experimental 4K/8K (ch.17) Sky Perfect 4K (Commercial Service) Cable 4K(RF) Cable 4K(IP) Apr 2016 Milplus 4K J:COM On Demand Experimental 4K (JSAT-110A LHCP) 3 BS ch.17 (TS) Commercial 4K/8K (RHCP & LHCP) Commercial 4K (LHCP) 11

12 4K services supported by 3 rd 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

13 Cable 4K Content Distribution Scheme Production Cable TV stations Content Providers Compilation Cable 4K Platform Japan Cable and Telecommunications Association (JCTA) Policy making and supervision for content production and compilation Distribution RF NW IP RF NW IP JDS JDS Cable JDS 局 Headend JDS JDS Cable JDS 局 Headend 13

14 Cable 4K RF Transmission System 25Mbit/s bitrate Content A Content B Content C HEVC File Encoder Playout Storage A B C Channels A B C Multiplexer Scrambler IP Transmission (TS IP) IP Transmission (IP TS) 64 Q A M NIT 4K TV STB AJC-CMS All Japan Cable Content Management System EPG PSI/SI CAS ECM/EMM CAS Server Subscriber Management System (SMS) Content Cable Platform Cable Operator HE Subscriber 14

15 Cable 4K IP Transmission System Content A Content B Content C AJC-CMS All Japan Cable Content Management System HEVC File Encoder A B C Playout Storage Servers Configuration SI SNTP L3/SW DRM (Marlin) Authentication & Authorization Server L3/SW Subscriber Management System (SMS) CMTS OLT Permission, etc 4K TV STB Content Cable Platform Cable Operator HE Subscriber 15

16 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

17 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

18 MMT (MPEG Media Transport) ISO/IEC (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

19 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 URL NTP SI MMTP Time Sync リプレイ Telco NW Example:Main video via broadcasting network, while videos from different cameras via telco network 19

20 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 TMCC NTP (Timing) Video HEVC Audio AAC ALS Subtitle Sub-title Encoding MMT MMT-SI Apps HTML5 EPG Content Download 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

21 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 SoC CAS Security Chip SAC (authenticated and encrypted) Scrambler: AES 128 CAS: standardized (one type) SoC: not dependent on CAS security chip 21

22 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 Japanese broadcasters will use HLG for the time being, with PQ for further study <HDR 画像 > <SDR 画像 > 22

23 ACS (Auto Configuration Server) Using broadband Forum TR-069 (Technical Report 069: CPE WAN Management Protocol), cable operators can remotely configure and maintain STBs Remote configuration Diagnostics Firmware update Collection of audience measurement data Cable TV Operators TR-069 ACS Diagnostics Firmware update Initial set-up Re-Configuration STB 23

24 Hybridcast TM Hybridcast is a Japanese equivalent of Europe s HbbTV (Hybrid Broadcast Broadband TV ) From NHK Science and Technology Research Laboratories web site 24

25 Remote Viewing Remote viewing is a service which enables Mobile Digital Media Players (M-DMP) such as smartphones and tablets outside the home, to view broadcasting content (real time and recorded) from Digital Media Servers (DMS) such as TV, STB and recording devices inside the home Requirements for remote viewing has been developed in consultation with Japanese broadcasters, and now documented in ARIB TR-B14 (in Japanese) Home Network Can view on-air and recorded cable channels using smartphones and tablets outside the home M-DMP DMS *Next Generation Television & Broadcasting Promotion Forum 25

26 Remote Viewing Mobile players must be paired with a digital media server (DMS) such as STB inside the home, before it is carried outside the home. Up to six players can be paired with a DMS but only one player can use this service at a time. Gateway (For NAT transversal) STB(DMS) Keeps a list of paired M-DMPs Paired* (1) (2) (3) (up to 6) Mobile Players(M-DMP) *Must be paired every three months Remote viewing outside the home Media Format(H.264) 360P(SD) or 480P(SD) Optionally: 180P(SD) 720P(HD) 1080P(HD) 26

27 Cable STB Roadmap ~ Event Cable 4K(RF) Cable 4K(IP) Rio de Janeiro Olympics MPEG2-TS C-CAS (Multi-2) MPEG2-TS Marlin(AES128) PyeongChang World Cup Tokyo Olympics MPEG2-TS ACAS (AES128) Advanced BS Retransmission Cable Platform/ Headend TS (Experimental ) C-CAS (Multi2) MMT TS conversion 8K 4K transcoding MMT Commercial Service ACAS (AES128) ACAS (AES128) SimulCrypt: C-CAS and ACAS ACS(Auto Configuration Server) 8K (RF) J.183 (Multiple QAM) 4K/8K (MMT IP) 3 rd Gen v1.0 3 rd Gen v2.0 3 rd Gen v3.0 STB Cable 4K Remote viewing Hybridcast +BS 4K Retransmission Reader for My Number card High Dynamic Range (HDR) TV Google VP9 (OTT) +BS 8K Retransmission 120P 22.2ch audio 27

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