digitalization in doordarshan

Digitalization in DoordarshanDigitalization in Doordarshan

IPTV India Forum Seminar, N. Delhi, October 31, 2011

-- A.K. BhatnagarA.K. Bhatnagar

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Broadcasting Scenario in IndiaBroadcasting Scenario in India

Over 700 registered Satellite TV channels

Cable networks in large part of country

About 6000 MSOs & 60000 LCOs

Pay DTH services by 6 private operators besides free-to-air DTH

service of Doordarshan (DD Direct Plus)

Terrestrial TV broadcasting by Doordarshan using over 1400

transmitters

IPTV by MTNL, BSNL & Airtel etc. mostly over Copper line

Video streaming / Mobile TV being provided by cellular mobile

operators

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Television reach in IndiaTelevision reach in India

Total no. of Households in India 223 million

No. of TV households 134 million

No. of Cable & Satellite households 103 million

Cable households 84 million

DTH households 19 million

No. of only Terrestrial households 31 million

Studio Centres : 66

Transmitters : 1415

Population coverage : 92%

35 satellite digital channelsAll India Channels 7

International Channel 1

Regional Channels 11

State networks 15HD Channel 1

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Present DD NetworkPresent DD Network

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DD ChannelsDD Channels

National Channels (7) Regional Channels (11)

DD National DD Bengali DD Punjabi

DD News DD Gujrati DD Sahyadri

DD Bharati DD Chandana DD Saptagiri

DD Sports DD Kashir DD Podhigai

DD Urdu DD Malayalam

DD Rajya Sabha DD North East

Gyan Darshan DD oriya

• Rapid developments in broadcasting across the World taking place, mainly driven by Digital Technology

• Digital Technology AdvantageSuperior qualityTransmission of multiple channelsSpectrum efficientPower efficientCapacity to carry Video, Audio, Multimedia & DataReliability of servicesImmense flexibilityEPG for consumers

Digital BroadcastingDigital Broadcasting

Broadcast Technology TrendsBroadcast Technology Trends

Multi-platform delivery

Transition to HDTV

Advance encoding

IP content delivery

Video on Demand

Interactivity

Tapeless workflows

File-based workflows

Going DigitalGoing Digital

Government decided for massive Digitalization of

Terrestrial network of DDI

Recommended that DDI should workout a rollout plan

for Digitalization in a phased manner

DDI enriched with the experience of operating DVB-T &

DVB-H Transmitters, decided to migrate to DVB-T2 +

MPEG-4

– MPEG-4/H.264 compression• A highly efficient compression which drastically

reduces per channel delivery cost of TV content

– DVB-T2 Standard• A highly efficient modulation & coding technique to

deliver terrestrial TV service under fixed, portable and mobile environment

– DVB-S2 standard • A highly efficient coding and modulation technique to

deliver Satellite TV service

Adoption of latest Standards in DD NetworkAdoption of latest Standards in DD Network

• Digital Terrestrial Television (DTT) is terrestrial mode of delivery of digitalized TV channels.

• Each DTT transmitter to relay 8-10 channels against 1 channel presently being relayed by the analog transmitter.

• In Prasar Bharati, after the experimental service of DTT, now it has been planned to establish 630 DTT transmitters. These will replace 1415 analog transmitters.

• Doordarshan adopted DVB-2/MPEG-4 standard for DTT Network.

• In the 11th Plan, establishment of 40 DTT transmitters in Metro and other major cities taken up.

Digital Terrestrial TelevisionDigital Terrestrial Television

• Advanced DTT System offering higher efficiency, robustness and flexibility

• Ability to increase the number of bits carried per symbol

• Rotated Constellations

• Multiple of Physical Layer Pipes (M-PLP)

• Alamouti Coding

• Extended Interleaving

Key Features of DVBKey Features of DVB--T2T2

• Installation of 190 more (Which makes Total 230) High Power Transmitters to cover all Mega and Tier II & Tier III cities

• Installation of 400 Low Power Transmitters

DDDD’’s Proposal for DTT in 12s Proposal for DTT in 12thth PlanPlan

• Main features of HDTV are: 5 times more resolutionmore realistic colorswide screen picture (16:9 aspect ratio)more viewing realismStereo/5.1 surround sound.

• World over, major sports events being covered in HD. • Major Broadcasters in developed countries are fast

moving towards full HDTV.

HDTV (High Definition Television)HDTV (High Definition Television)

• HDTV introduction taken up as detailed below:

Multi-camera HD studios & OB Vans at Delhi & MumbaiHD Field Production, Post production and preview facilities at 4 MetrosHD Play out facility at DelhiHDTV Transmitters at 4 Metros

• Production and transmission of various DD Channels in HD will be taken up as part of 12th Plan.

HDTV (High Definition Television)HDTV (High Definition Television)

Studio DigitalisationStudio Digitalisation

• Full digitalization of 39 Doordarshan Studio centers (31 partially digital and 8 analog Studios) taken up.

• All 66 Studio centers in Doordarshan network would become fully digital, shortly.

Digitalisation of Satellite ChannelsDigitalisation of Satellite Channels

• All 35 Satellite Channels of Doordarshan are already digital.

• Number of Digital Earth Stations: 39

• Number of DSNG Vans: 32

• Capacity of DTH platform increased from 33 to 59 TV channels in 2008

• A special DTH service in ‘C’ band with a bouquet of 10channels for A&N Islands started in 2009

• Platform being Upgraded from 59 to 150 channels shortly.

DoordarshanDoordarshan’’s Frees Free-- toto-- air DTH air DTH Platform (DD Direct+)Platform (DD Direct+)

Broadcast versus StreamingBroadcast versus Streaming

Broadcast Technologies ( Push Type)Streaming Technologies ( Pull Type)

Broadcasting – Limited channels to unlimited subscribers

Streaming – Unlimited channels to limited subscribers

IPTV Regulatory FrameworkIPTV Regulatory Framework

IPTV service providers mandated to carry compulsory carriage of certain DD channels :

DD  National DD News

DD Sports DD Urdu

DD Gyan Darshan DD Bharati

Lok Sabha TV channel DD  Rajya Sabha

IP Based Production StudioIP Based Production Studio

Broadcast services can be managed throughout the entire broadcast chain within the IP domain:

ProductionProductionAn IP environment supports an end-to-end digital workflow that dynamically moves media through the production process,

Allow editing functions to be easily shared among different teams,

Reduce OPEX,

IP in BroadcastingIP in Broadcasting

ContributionContributionHighly flexible and cost-effective IP networks let broadcasters reduce OPEX andRapidly introduce new services, such as high-definition (HD) video.

DistributionDistributionDistribution to Transmitter Sites & Earth Stations can easily be using IP Network.

IP in BroadcastingIP in Broadcasting…Contd.

TransmissionTransmissionCarrying IP data over DVB-S2/T2/C2Carrying MPEG2/4 video over IP networks

MultiplatformMultiplatform DeliveryDeliveryIP provides a common framework for easily adapting

and distributing TV services for any platform or device.

IP in BroadcastingIP in Broadcasting…Contd.

Connect TV or Smart TVConnect TV or Smart TV

• Smart Phones leading to Smart TVs

• Integration of Internet & Web 2.0 features into TVs and STBs

• Intended to extend reach of multimedia content to TV sets seamlessly & viewer friendly manner using single remote

• Deliver content from other computers/networks like photo, music, etc.

• EPG, Interacting services, social networking etc.

Connect TV or Smart TVConnect TV or Smart TV

Everything over IP

Dynamics of VideoDynamics of Video

ThanksThanks

A K BhatnagarA K BhatnagarEngineerEngineer--inin--Chief, DoordarshanChief, Doordarshan

Email : akbhatnagar52@yahoo.comEmail : akbhatnagar52@yahoo.com