BUILDING BLOCS FOR DIGITAL TERRESTRIAL TV – DVB-T/T2FOCUS ON REGIONALIZATION

DAVID MOUEN

JANUARY 27, 2011, KIEV

04/19/23

AGENDA

INTRODUCTION - THOMSON VIDEO NETWORK OVERVIEW

DIGITAL TERRESTRIAL TV: NEW SERVICES AND BENEFITS

MULTIPLEX GENERATION, CUSTOMIZATION AND TRANSPORT

DTTV SYSTEM KEY COMPONENTS

CONCLUSION

2

THOMSON VIDEO NETWORKS THROUGHOUT THE MEDIA CHAIN

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Thomson Video Networks provides innovative video compression and content processing solutions at the digital headend, all along with a competitive set of professional services that enable network operators and broadcasters to deliver the best HD, SD, Web and Mobile TV experience.

Live events

Studio Post-production

CONTENT PRODUCTION

Playout center

Network operation

Local programming

National programming

Digital TV Headend

CONTENT DISTRIBUTION

Terrestrial broadcasting

CONTENT RECEPTIONCONTENT TRANSMISSION

Fixed reception

Mobile reception

Southwick, MASales

Field Services

Conflans (Paris), FranceSales & Bids

Rennes, France, HQR&D - MarketingSales - Factory

SingaporeSales

Field services

Brest, FranceOperations

Miami, FL Sales

Field services

Sao PauloSales

Field services

BeijingSales

Field services

THOMSON VIDEO NETWORKS AT A GLANCE

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15 years of innovation and continuous service to deliver leading-edge compression and network systems to network operators and broadcasters worldwide

Worldwide leader in HD, SD, Mobile TV head-end systems

Significant global presence to ensure close customer proximity

~400 employees with R&D center (200 employees), manufacturing location and multiple sales and services offices

Trusted supplier to hundreds of customers around the world

Over 25,000 active HD, SD and Mobile TV channels deployed worldwide

Culture of sustained innovation and technology

PTSPTS

KenyaKenyaDTTVDTTVKenyaKenyaDTTVDTTV

Key DTTV Customers

DIGITAL TERRESTRIAL TV: NEW SERVICES AND BENEFITS

6

•Mix of TV, radio, data•14 SD (T), 6 HD (T2)•Sharing Tx costs

Multiple Services over Multiple Services over each frequencyeach frequency

CHALLENGE TO FACE: HOW TO BUILD, CUSTOMIZE AND DISTRIBUTE DTTV MULTIPLEXES?

77

Channel #1Playout Center

TransmittersTransmittersDTTV STBDTTV TV

???? 0100110111001011011

Multiplex: The bitstream delivered by the headend, modulated by the DVB-T/T2 transmitter, …), demodulated,

descrambled, decoded by the STB or the TV.

Multiplex: The bitstream delivered by the headend, modulated by the DVB-T/T2 transmitter, …), demodulated,

descrambled, decoded by the STB or the TV.

6, 7 or 8 MHz

Channel #2Playout Center

Channel #NPlayout Center

EXAMPLE OF MULTIPLEXES – DVB-T / DVB-T2

8

DVB-T240,210 Mb/s

23 SD MPEG-4

DVB-T240,210 Mb/s

6 HD MPEG-4

HD Video 6 000 Stereo Audio - E AAC 5.1 256 Teletext 130 Subtiltle 80

TOTAL HD Service 6 466

MPEG-4 HD Service (Kb/s)

DVB-T24,882 Mb/s

14 SD MPEG-4

SD Video 1 500 Stereo Audio - HE AAC 128 Teletext 80 DVB SubtiltleTOTAL SD Service 1 708

MPEG-4 SD Service (Kb/s)

Stuffingdown to 100 Kbps

DVB-T24,882 Mb/s

7 SD MPEG-2

SD Video 3 200 Stereo Audio - HE AAC 96 Teletext 75 SubtiltleTOTAL SD Service 3 371

MPEG-2 SD Service (Kb/s)

PSI (PAT, PMT, CAT) 200SI (NIT, SDT, TOT/TDT, MIP) 20SI EIT pf + EIT schedule 300CA ECM 200CA EMM 100Software Download 30TOTAL Common Data 850

Common Data (Kb/s)

Statistical MultiplexingDynamic bitrate allocation among a pool of encoders sharing a frequency. Up to +30% efficiency.

SD/HD Encoders

DIGITAL TERRESTRIAL DVB-T/T2 SYSTEM OVERVIEW

99

National Head-endMultiplex Generation

Regional Head-end

Multiplex Customization

TelecomTelecom

TransmittersMultiplex

BroadcastingRegional Head-

endMultiplex

Customization

TelecomTelecom

TransmittersMultiplex

BroadcastingRegional Head-

endMultiplex

Customization

TelecomTelecom

TransmittersMultiplex

BroadcastingRegional Head-

endMultiplex

Customization

TelecomTelecom

TransmittersMultiplex

Broadcasting

BroadcastersPlayout Centers

Live to live National / Regional switch

Live to live National / Regional switch

Advertising substitution (Ad Insert)

Advertising substitution (Ad Insert)

24/7 local insertion24/7 local insertion

NATIONAL HEADEND - ARCHITECTURE

10

10

ViBESD Encoder

ViBEHD Encoder

RD1002 IRD

NetProcessorNetwork Adaptor

EPG generatorIP Encaps

ITV Carousel

DataCasting:

NetProcessorMultiplexer

Service MultiplexingScrambling

SFN adaptationDVB-T2 adapt Data Insertion

Conditional Accessservers

AmethystSamless Switch

DVB-S2Modulation

SapphireMPEG Video Servers

IP, PDH, SDHµW, Fiber

XMSManagement

SDIRouter IP or ASI Router

To regions or transmittersTo regions or transmitters

From Playout Centers

From Playout Centers

QOSMonitoring

TelecomBackbone

NetProcessorNetwork Adaptor

Descrambler

IP Router

GPSReception Encoding Multiplexing Distribution

Management

QOS

REGIONALIZATION: 24/7 LOCAL INSERTION

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National head-end

Regional HeadendViBE

Encoders

NetProcessorMultiplexer

Encoder: Encoding of national channels

(Statistical multiplexing)

Encoder: MPEG-4 encoding of local channels (Statmux if more than 2)

Multiplexer:•Remultiplexing•Scrambling•SFN or DVB-T2 adaptation•IP or ASI delivery

GPS in

REGIONALIZATION: LIVE TO LIVE NAT. / REGION. SWITCH

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SDISDIBroadcasterBroadcaster

start end

Switch triggers•SCTE104 over SDI•SCTE104 over IP•Analog cue tones•GPI

Regional Headend

ViBE Encoder

NetProcessor Multiplexer

Multiplexer - On digital cue tones detection:• seamless splice from the national to the regional service and reverse (a few s latency) - Gop accurate OR•Service subsitution (50 ms, not seamless)•Service must be in clear•With even-id capability to select regions

ViBE Encoder

S1 Regional

S2

S3

S4

S2

S3

S4

S2

S3

S4

S1 National S1 National

Time

BW

National Headend

EncoderFor quality optimization the service to substitute is VBR except during the switch.

•Multiplexer – complementary process•Scrambling, SFN or DVB-T2 adaptation

I I

Encoder - on trigger:•Digital cue tones insertion (SCTE35 tables)•I frame generation

I

SCTE35

Frame accurate solution thanks to I frame generation on splice points +

SCTE35 commands.

Frame accurate solution thanks to I frame generation on splice points +

SCTE35 commands.

GPS in

REGIONALIZATION: ADVERTISING SUBSTITUTION (AD INS)

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SDISDIBroadcasterBroadcaster

Switch triggers•SCTE104 over SDI•SCTE104 over IP•Analog cue tones•GPI

Encoder - on trigger:•Digital cue tones insertion (SCTE35 tables)•I frame generation

Regional Headend

Sapphire Splicer / Ad Server

Splice / Ad Server - On digital cue tones detection: •Frame accurate seamess splice, replacing live content by ad clips•MPEG-2/4 SD/HD CBR•Services must be in clear

ViBE Encoder

National Headend

•Multiplexer – complementary process•Scrambling•SFN or DVB-T2 adaptation•IP or ASI delivery

I

NetProcessor Multiplexer

GPS in

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SECURE AND EFFICIENT TRANSPORT OF SFN MULTIPLEXES

Head-end

Telecom Network

Agg+

DVB-S2

mod

Amethyst - Smart switch•Delay compensation.•Deep analysys•Seamless switch of MFN & SFN multiplexes

DVB-S2 multi TS modulation•2 or 3 DVB-T multiplex in 1 transponder

RD1002 - Demo+ Descrambler•Demodulation, descrambling of protected free to air services.

NetProcessorTelecom Network Adaptor•Provide transparent bit accurate transport over backbone.

Transmitter site

AD SERVER / SPLICERAd Insertion (SCTE-35/30 compliant)

GOP / frame accurate seamless splicing

Frame-accurate ingest of advertising clips (MPEG-2, H.264, SD, HD)

KEY COMPONENTS FOR DVB-T/T2 HEADEND SYSTEMS

MPEG ENCODERMust performs superior video encoding at very low bitrate (SD/HD MPEG-2/4)

Audio codecs: AAC, Dolby 2.0, 5.1, …

Logo in, teletext processing, …

SCTE 104 and SCTE-35 compliant (digital cue tone insertion)

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MULTIPLEXER / SPLICERMultiplexer / remultiplexer, PSI/SI processor

Seamless splicing (SD/HD, MPEG-2/4)

Transrating

Scrambling

SFN adaptation, DVB-T2 adaptation

MANAGEMENT SWDevice configuration and monitoring. Handle service resiliency (redundancy)

Control the national and regional headends, monitor the transmitters

Control the QOS with dedicated probes.

Scale from small to very large systems .

ViBE NetProcesor

SapphireXMS

CONCLUSION

THE BEST PICTURE QUALITY AT LOW BITRATE IS A MUSTBW on DTTV network is very expensive, every Kbps must be used with efficiency.

REGIONALIZATION IS KEY FOR DTTV COMPETITION VERSUS DTH, IPTV, CABLE -BUILDING BLOCS EXIST AND PROVIDES FLEXIBILITY, EFFICIENCY & COST EFFECTIVENESS

Local encoding, live to live switch, ad insertion, SCTE35/30 compliant.

Optimized & secure transport of multiplexes over satellite (DVB-S2 multi TS)

FUTURE PROOF SYSTEM DESIGN & INTEGRATION REQUIRED TO FACE NEW FEATURES TO OFFER, INCREASE OF REGIONS AND OTHER EVOLUTIONS

Scalable solutions required (features / sizing)

Flexible management SW, from contribution links to Transmitters

SFN & T2 adaptation, VBR, Ad Insertion, integrated Teletext to DVB sub, …16

THANK YOU

04/19/23