Post on 08-Apr-2018
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MHEG5 as an interactive and
presentation platform for one wayBroadcast Networks
Worldwide MHEG5
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Why specify Interactive TV?
Interactive TV extracts maximum benefit fromdigital TV (for both viewers and broadcasters).
Applications and services include:
Digital Teletext and information services
Enhanced TV
Games and voting/participation TVformats
Operator information / account
managementT-commerce for shopping channels
E-government
News, sport, weather
Multi-channel eg sport, news, concertsetc
Associate with Entertainmentprogramming
Account information, billing etcWeb-like advertising
Civic information, health, education
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Interactive platforms
Name Supplier Market Open
Standard
Set
Up
Cost
Per
receiver
cost
(estimated)
Comment
Open TV Vertical pay No High $5 - 10 GenerallypartnersNagra CA
NDS Vertical pay No High $4 - 12 GenerallyNDS CA
Various Vertical payHorizontal
FTA
Yes butpatented
Med $5 - 7 Any
Various Vertical payHorizontalFTA
Yes, nopatents
Low $1 - 2 Any
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25th February 2008
MHEG-5 Overview
Developed in ISO-MHEG group and DAVIC in 1995
Intended as UI for DAVIC interactive services and VOD
Simple object oriented interpreted language
Standardised in ISO 13522-5
Adopted by UK DTG in 1997
UK Profile includes text, graphics and DSM-CC carousel systems
Profile evolved to UK Profile 1.06 (current)
ETSI standard ES 202184
NZ profile extends to include extra Maori characters and EPG key
New deployed in 2008 and advancing 2009 IP Interaction Channel (return path)
PVR support
Improved graphics
HD compatibility
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MHEG-5 Rollout
Successfully deployed in UK
>18m receivers sold
99% UK Freeview platform penetration, >25% usage
Launched in New Zealand in May 2007
DVB-S receiver sales over forecast so far (already >60,000 units)
DTT launches 2008 with MPEG-4 HD and MHEG-5
Trials and evaluations in Ireland, Hong Kong, Malaysia, Singapore, Turkey, Indiaand Russia with interest from other countries in Europe and Asia
No known essential IPR
MHEG middleware software approx US$1 per receiver
STBs are lowest retail price in the world UK
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What is MHEG-5?
Simple object orientated programming language
to control presentation of content made up from audio, video, textand still graphics objects
to provide user interaction with the application
supporting real time video and audio presentation focussed on TV requirements
low overhead and high speed
A complete environment including
Authoring tools and data systems Broadcast transmission using DSMCC Object Carousel standardand optional IP-based connectivity
Middleware the MHEG middleware or stack that is resident inthe STB. This provides an API on which interactive applicationscan run
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MHEG vs Java
MHEG-5 is designed specifically for TV presentation
Remote control operation
Displays built on TV layout
Works in its own safe memory space
Robust interpreted language
Java is a complex general purpose tool with adaptations for TV
As illustration of comparable complexity
MHP (based on Java) has >10000 unit testsf There are no other standardised Java systems for TV
MHEG has
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MHEG applications are smaller
Source: MHP/MHEG Coexistence project. BBC Research.
Smaller applications means faster start and lower cost transmission
MHEG applications have been designed to compete with almost all common MHP functionality
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MPEG-4 and MHEG-5
Inclusion of HD/SD MPEG-4 in the system makes adifference to a number of issues
Cost of silicon
Number of receiver suppliers in short term
Complexity of receiver outputs
MHEG-5 display strategy for HD services
Receiver costs are higher in short term
but bandwidth utilisation is better
Next generation iDTV will include MPEG-4
Receiver solutions have easy IP connection
MHEG-5 HD support launched in 2008 (Freesat in UK)
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MHEG Interaction Channel
Extension of Profile to add always on IP connection
Connected to home network
Could be connected via phone
Enables
Seamless extension of interactive services using content from knownservers
Commercial transactions
Security
Now under development for use in 2009
Including test regime
Next version under discussion
MHEG control of presentation of streamed or downloaded A/V from IPsource
Provides Broadcaster-controlled IPTV
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Conformance Regime
In UK conformance regime was weak until 2005/6.
Many problems arose from this, especially for retailers
A tough conformance regime, using Pass/Fail tests to
achieve brand acceptance, is recommended forSI, Subtitles, MHEG-5, RF, OAD, AFD, etc
OAD capability is essential for all receivers
Much can be derived or licensed from DTG in UK
Including subcontracting work
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MHEG-5 Profile for Pay DVB-C or DVB-T
Current Baseline is UK Profile plus option for EPGlaunch key(s)
Support for local languages including options for
Chinese, Indian and African fonts. Graphics and downloadable font system
Interface to Conditional Access to control SMS andother subscriber messaging
Loaded games option
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Providing Interactive Applications
Most applications are similar, with different design andcontent.
Publishing information
Displaying graphics and pictures
Interaction through list and select or show and select.
Navigation to different services
Most applications in MHP and in MHEG are made withhigher level template tools and very stable operatingapplications
Most cost in applications is in content production(information and pictures)
Templates and authoring tools are available as OpenStandard GPL Tools
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MHEG System Architecture
Live content feeds & updatese.g. Weather, News, Sports
(XML)
DSMCC
Object Carousel
MHEG Engine
Set Top Box
Program Video & Audio(Video Server playout)
MHEG Appln
TV Display
ContentManagement
Systems
Authoring Tools
MuxMHEGTools
TX
MHEG content
MHEG content
MHEG Applns
Broadcast Playout Viewer Premises
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EchoMHEG solution 17
UI & EPG
EIT Schedule
LCN
OAD
DVB Subtitling
DVB SI
CI
AV Decoder
DEMUX
TrueType Fonts
Network Stack
TLS HTTP
16 Bit Graphics
Engine
Downloadable
Font Manager
Back Channel
BackgroundPlane
Non Volatile FS
Image Decoders
PNG, JPG, IPlane
DSMCC
ASN.1
Parser
MHEG Engine (Freesat)
MHEG Application
Hardware Adaptation Layer
Host
Drivers
Storage Media
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Some Applications
Text
Multiscreen
Complex Advertising
Games
EPG
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Skytext on Freeview UK
500 pages with frequent content updates (mostlyautomatic)
Integrated with SysMedia content management andproduction system
Profit generating (though advertising)
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Text Service -Traditional Chinese
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25th February 2008 BES Expo MHEG-5 S&T
Multiscreen Services
MHEG controls thepresentation and choiceof multi-screen services
User chooses which toview
Has access to informationon each event
40%+ of digital sports
viewers in UK use theseapplications
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Shopping - QVC (Freeview UK)
Integrated with QVCs existing CMS using XML Runs completely automatically using a data-driven model Profit generating through sales increases Can be extended to include transactions
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25th February 2008 BES Expo MHEG-5 S&T
MHEG System Architecture
Live content feeds & updatese.g. Weather, News, Sports (XML)
DSMCC
Object Carousel
MHEG Engine
Set Top Box
Program Video & Audio(Video Server playout)
MHEG Appln
TV Display
Content
ManagementSystems
iTVAuthoring
Tools
MuxMHEGTools
TX
MHEG content
MHEG content
MHEG Applns
Broadcast Playout
Viewer Premises
Interaction
Server
Internet connected return channel
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25th February 2008 BES Expo MHEG-5 S&T
QVC prototype with online purchase
Green Buy Button leads to online purchase via the IP interaction channel
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Games - Tetris
Stand-alonegamingapplication:
Free-to-playor pay-per-play viapremium ratephone
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Games Studio Runners
Sokoban maze game for BBCi
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EPG application for NZ
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Platform-wide EPG
MHEG-5 can provide platform-wide EPG
Loads quickly from carousel
Data carriage is efficient
f
Compressed in carouself (EIT schedule uses uncompressed data)
Same appearance and behaviour on all receivers
Branding of platform and per channel
Advertising opportunities
Needs carriage on all muxes
PVR control from MHEG-5 EPG in development
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EPG Menu Screen Example
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Summary
Digital TV enables additional interactive services that benefit both viewersand broadcasters
MHEG-5 offers a proven and stable middleware with low consumer cost,strong manufacturer support from major brands and suppliers
No known essential IPR licensing MHEG-5 is also widely available in flat screen iDTVs from many
manufacturers
A minimum profile specification and simple conformance testing ensuresthat all receivers are interactive-enabled at an affordable price
Profile with Chinese language support already available
Receivers in pre-production to this specification
Profile for Indian language support under development
PVR, High-definition and IP support are also available for future services