ISDB-T technical seminar(2007) Preface in Brazil As described in forward section, to make up digital broadcasting system, broadcaster should consider and investigate the many Section 7 theme for designing and constructing digital broadcasting Implementation of Broadcaster infrastructure. Theme of this section are as follows: June, 2007 (1)Broadcaster system design and examples; Digital Broadcasting Expert Group (DiBEG) (2) Transmission network of DTTB Japan (3)Transmission network design for digital broadcasting Yasuo TAKAHASHI (4)New technologies for transmission network (Toshiba) (5)Examples of Transmitter and repeater In this section, Japanese case is explained 1 2 DiBEG DiBEG Digital Broadcasting Experts Group Digital Broadcasting Experts Group Contents 1.Infrastructure of Broadcaster 1. Infrastructure of Broadcaster for digital broadcasting for digital broadcasting 1.1 What are difference? 1.2 What should be investigated / considered? 1.3 Master system design 1.1 What are difference? 1.4 Examples of master system/transmitter/antenna( in Japan) 1.2 What should be investigated / considered? - Service and business solution 2. Transmission network system for DTTB - Business and Source of revenue 3. Transmission network design for digital broadcasting 1.3 Master system design 3.1 Link budget for transmission network chain 1.4 Examples of master system/transmitter/antenna( in Japan) 3.2 Network synchronization in SFN 4. New technology for transmission network 4.1 Degradation factors in transmission network 4.2 Examples of Improvement technology 5. Examples of transmitter and repeater 3 4 DiBEG DiBEG Digital Broadcasting Experts Group Digital Broadcasting Experts Group What are difference? What should be investigated/ considered? Service and Business solution Differences Between Analog and Analog Analog Digital Broadcasting Service Analog Broadcasting Digital Broadcasting broadcastingbroadcasting ・Number of Channel Single Channel Multi Channel Vision Analog Analog Master ・Video Quality Standard (SDTV) + High quality (HDTV) Sound STL transmitter ・Communication Casting Interactive ・Target Viewer Customer DigitalDigital Key technologies ・Audience Action Passive Active broadcasting broadcasting ・ Home Anywhere MPEG Coding/Multi-plexing Where Fusion of OFDM Business Broadcast and transmission Telecommunication Vision Digitalization Coding ・Source of Revenue Sponsor (Commercial station) + Subscriber, Industry Digital Digital Sound ・Advertising Target Master Digitalization Coding STL transmitter Mass + Segment, One to One ・ Media Broadcast + Interactive Data ・ Multiplexing Potential Coding Low (Stability) High 5 As shown above, broadcaster should consider from service/business aspect6 DiBEG DiBEG Digital Broadcasting Experts Group Digital Broadcasting Experts Group What should be investigated/ considered? Business and Source of revenue Requirements for Digital TV Station - Handling HD/SD program materials Business Core Source of TV Remote Network - Compatibility with HD/SD mixed broadcasting Editing and simulcast Positioning Competence Acquisition Revenue Information - Flexibility for audio multi channel Host Server Computer - Compatibility with new services - Affiliate network interface Existing Core business Capability of Traditional On Air System Service - HDTV contents advertising NLE TV organization - Multi Channel and production Master Control News Broadcasting Production Switcher Program On Air Server Network Encoder Video Router New advertising Studio Sub & MUX Organization New advertising Network Data combined with - Electric leaflet Asset Contents Management Data TV program and - Marketing research Holders Transmitter Broadcasting Broadcasting data contents News New (for TV Commerce) Service New Business Program One-Seg - Additional - Quick and flexible Interactive Interactive service Server Internet value for TV Capability of production Service -TV Commerce and transmission work Archive - New source contents Contents of revenue production and - Handling HD/SD program Authoring contents multi- materials Center Contents use - External network interface Broadband Internet Pay TV service Distribution or Mobile NW Distribution Server - Preservation and rights management 7 for second use of program materials WEB Basic System 8 DiBEG DiBEG Digital Broadcasting Experts Group Digital Broadcasting Experts Group 1.3 Master system Design Signal flow of Digital Master For design digital master system, following parameters should Signal format be considered. Sw’er size SI Server TS format Sub Video/Audio signal quality/ number of program; HD? or Multi channel Studio No. of ENC SD? or Mixture ? Number of Encoder, Switcher’ type/size, etc Broadcast TS ENC type, etc format (note 2) Hierarchical Transmission service; Put One-seg service or not? Same VTR/ program or not? Number/type of encoder, Switcher design, etc Server M Matrix Video/Audio Middle ware Service; What kinds of data casting? Program related Sw’er Encoder U data casting, independent data casting , both or any of one, or. Program to MOD Design of master data/control system, Authoring system, etc Network X Data casting Interactive Service; What kinds of Interactive Service? Broadcaster OB System itself? or collaborate with communication carrier? VAN Business model design, Interactive system design, etc. Signal format (note 1) TS format Most urgent and important themes are, (note 1) Signal format of input/output of Sw’er depends on signal source, signal flow design ,and master control system design If HD is main signal, digital format may be better. Example of Master system(Japan) is also shown. (note 2) Transmission rate of Broadcast TS is constant rate, 9 in spite of different service 10 DiBEG DiBEG Digital Broadcasting Experts Group Digital Broadcasting Experts Group Example of Control/ data flow of Digital Master Program information DS DS: Data server APC:Automatic program system control Example of Master system( Japan) Stream Because of the difference TV broadcasting contents, operation APC Controller system culture, etc . Brazilian system may not be same as Japanese system. But ,as a reference it may be useful. So, show MUX cont. ENC example of Master system design in Japan Program parameter PSI section data control setting TX control data (1)Overview of Facilities Program server, etc Matrix Video/Audio (2)Encoder／Multiplexer Sw’er Encoder M U to MOD (3)PSI/SI Flow Diagram X Control/Data Data casting System This document is dedicated by Toshiba EIT,etc SI Server TS format SI data 11 12 DiBEG DiBEG Digital Broadcasting Experts Group Digital Broadcasting Experts Group (1)Overview of Facilities (1)Overview of Facilities Overall Block Diagram Data Flow/Signal Flow Program Information ProgramProgram System On-Air Data and PSI/SI Data Server InformationInformation Data Server Data Service System Production Linked On-Air Data System On-Air DataandPSI Data System Filing Instruction Server t is S Ether-Net LAN L I y la P Alarm Data Service SI/EPG Automation System Server Server LOCAL LAN Data service CM Server Start Automation Trigger Data service SI/EPG Server CM Server Automation Server SI/EPG Server HD Program Server Program RMP P S VTR Parameter Encoding CM Server I l C o o Server r n t t SD Program1 n ro Program l o a Program n C d SD Program2 T Server m TS ra Server a n r s ENC/ g m S o is T 1-SEG Program STL r s P io Matrix r n i P MUX A TX Net HD - a SI ra Net n m Switcher O e te Net SD r Terminal Data services ENC/MUX Station B ase Ba Matrix STL Analog program nd Matrix Base Band TS TS STL Analog STL ENCENC MUXMUX SwitcherSwitcher TXTX SI/EPG :Service Information/Electric Program Guide NET (HD:1 SD:1) Net Terminal RMP： Rights Management and Protection Station PSI :Program Specific Information Main Stream Signals(Base Band and TS) ENC/MUX： Encoder / Multiplexer Data and Control 13 14 DiBEG DiBEG Digital Broadcasting Experts Group Digital Broadcasting Experts Group (1)Overview of Facilities (2)Encoder／Multiplexer HD System for Digital Broadcasting ＥＮＣ／ＭＵＸ Total Control of Base Source for Superposition (SD) Data Distributor SD Server Band and ENC/MUX Source for Superposition (HD) Distributor HD Ether-Net LAN Touch Panel Automation Terminal Service1 Mix HD and HD ENC Encoding PSI/Transmission ＳＤ ＨＤ Parameter Control Data Keyer Primary SD1 VIDEO ISDB-T Transmission A/D TS D/C SD ENC HD-ENC Control Data Source for Distributor AUDIO Transmission SD Service2 Control Data Mix Multiplex TS U/C HD SD2 Matrix SD1-ENC System Change ＨＤ and D/C SD ENC Source Keyer Input Switcher ISDB TS Splicer SD2-ENC STL Matrix 1SEG MUX Mix 1-SEG TX Switcher ＨＤ 1-SEG 1-SEG ENC and D/C ENC Keyer SI/EPG Source for Distributor HD Analog Data Service HD Analog ＳＤ Mix SYS-1 and ・Black Burst Keyer Analog NET ENC/MUX SG Reference SYNC/MUX/SFN ＳＤ ・ 10MHz Conversion & Distribution ＨＤ Digital NET SYS-2 ENC/MUX 15 16 DiBEG DiBEG Digital Broadcasting Experts Group Digital Broadcasting Experts Group For Reference (2)Encoder／Multiplexer Example image of Stream Controller’s display ENC/MUX（Encoder /Multiplexer) Segment configuration for Hierarchical transmission - Encoder control Automation (video bit rate, Mode picture angle, audio bit rate and audio mode) - MUX control (input port ON/OFF and PSI control) - HD encoder (MPEG2 ： MP@HL) Guard E N C -SD encoder (MPEG2 ： MP@ML) interval Encoder - 1-SEG encoder (H.264：[email protected]) Modulation M U X Digital terrestrial broadcasting format multiplexing Convolution (ARIB STD-B31 compliant) Multi-plexerMultiplexer coding rate Time - Seamless system switching (MPEG2) interleaving