MHEG-5 is an International Standard arising from work in the Multimedia-Hypermedia Experts Group of ISO-IEC. It deals with interactive TV presentation and interaction.

Developed in ISO-MHEG group and DAVIC in 1995Standardised in ISO 13522-5Adopted by UK DTG in 1997ETSI standard ES 202184NZ profile extends to include extra Maori characters and EPG keyNew Hong Kong profile released with support of Traditional Chinese

ETSI adopted DVB-MHPDAVIC spec MHEG

Exhaustive evaluations by the DTG showed that the ISO MHEG 5 standard, based on the work of DAVIC, has significant technical advantages over alternative proprietary APIs as well as the over-riding advantage of being the only open standards API available.In order to meet the very tight timescales involved, the profile of MHEG 5 specified for the launch of services in the UK omitted a number of features that were not required immediately. These were allowed for as extensions to be added in the future. EuroMHEG contains those extensions, together with European font requirements and other features that will allow MHEG 5 to stand comparison with proprietary alternatives.In partnership with European sister organisation DigiTAG, the DTG has therefore completed the specification of a package of additional features under the name of EuroMHEG. As a source of detailed requirements, the group has worked closely with Aniel, the Spanish Manufacturers Association and a number of Spanish broadcasters and network operators. However, the aim has been to design the profile for general application and to simplify the task of migrating to the future DVB MHP operating system.(http://www.anushka.eu/intellect/Digital%20Television%20Group%20MHEG_files/prospectus.htm)

ISO عنوان راتحت استانداردها از خانواده معرفی MHEGیکدر که میدهد ای چندرسانه اشیاء به را امکان این که است نموده

معماری Client-Serverیک

. استاندارد شوند توزیع مختلفی پلتفورمهای با یک MHEG-5واستاندارد از گرا کاربرد برای MHEG-1نسخه که STBمیباشد

این در و گردید معرفی میباشند محدود منابع دارای که هاییکاربرد یک استاندارد Bootاستاندارد های MHEGبا رشته در

Mpeg-2 . در کاربرد این محل و نام میشود منتقل و گرفته قرارو ارسالی اطالعات DSC-CCرشته در پارامترهایی توسط

جدول ( سرویس به . SIمربوط میگردد) معرفی

شده ارائه سرویسهای

A Guide to MHEG-5Profile SpecificationTelevision broadcasters and service providers around the world are steadilymaking the transition from analogue transmission to digital. To capitalise onthese new digital services, application programs can be transmitted to digitalreceivers to provide new ways for the viewer to interact with television. The mostsuccessfully deployed interactive application language for digital TV consumerelectronics is MHEG-5 which provides consistent application programs across themarket.MHEG-5 is a presentation language and its compact and efficient transmission todigital TV devices makes it ideal for incorporation into low cost receivers, exactlythe right kind of feature enhancement for ensuring the successful take-up ofdigital TV services.

The SystemThe MHEG-5 system is reasonably simple and its client software can beimplemented in a wide range of low cost digital TV receivers. The client softwareconsists of an MHEG engine (or virtual machine) that interprets MHEG applicationsand presents information delivered to it via a carousel file system or a ‘returnchannel’.The MHEG system is designed specifically for TV use and is ‘object based’.MHEG is conceived in terms of controlled placement of objects on the TV screenand is sometimes referred to as a ‘presentation engine’. In fact it also enablesmany logical constructs and in this the UK and ETSI profiles have been extendedto provide a full solution, at low cost, to the principal needs of the broadcaster ofinteractive TV. MHEG enables interaction between the user and the applicationthrough the remote control and in some implementations allows the application toexchange information with a remote server via an IP connection.

Head –Endمعماری

STBمعماری

STBمعماری

MHEG Client-Server Interaction

The MHEG programming language broadly comprises objects for presentation,links that respond to events and Resident Programs. Presentation objects includevideo, audio, lists, text and graphics. Events respond to input from the remotecontrol, a timer, a stream event message or the result of a logical condition

specified by the programmer. Resident Programs are native functions, defined inthe Profile, that extend the basic MHEG and include sub-stringing and castingwhich enable the manipulation of text objects as structured data files.

An MHEG application comprises programs of two types; application object andscene object. The application object holds global objects. There may be severalscene objects for every application. The scene object(s) holds objects local to thescene. Within an MHEG application there can be navigation between scenes.

The broadcast MHEG profiles have a simple life-cycle, allowing only oneapplication running at a time. An MHEG application can launch other MHEGapplications but on doing so the original application is terminated. In a broadcastsystem, an auto-launch application may be started when a service is selected withwhich is associated. The auto-launch application can then launch otherapplications and select to tune to other services. An application leaving thecontext of its service is normally terminated, (although recent development workhas provided for draft extensions that allow applications to persist betweenservices under some circumstances). Information can be passed betweenapplications by making use of persistent store in the receiver.

An application is normally loaded from the DSM-CC object carousel or optionallyfrom the return channel or from a DVB-CI module. Data is loaded from thecarousel, and this can be updated rapidly on screen as the content of a data objectchanges. Information is presented either as ‘included’ content, where the text orgraphic is embedded in the application, or as ‘referenced’ content, which isacquired from the carousel as required. A strategy of building applications withpredominantly referenced content enables applications to remain stable, withchanging content and graphics and even detailed layout, over an extended period.

MHEG-5 interactive applications include:• Video on Demand• Home-shopping• Interactive and enhanced advertising• On-screen information• Voting/Polling• Interactive gaming• Electronic Programming Guides (EPG’s)• Style and function buttons for interactive hot spots• Linked pages of information, i.e. weather data• Resizing of video in a window.• Digital multimedia teletext• Selective viewing of news and information• Interactive games

• Interactive applications for education• Multi-stream news presentation• IPTV support

MHEG and Application GenresEPGMHEG can be used to build an EPG application that has data efficientlydelivered in the DSM-CC object carousel and presented using MHEG. Thesystem allows the user to tune to a chosen channel from the EPG. Thisprovides the broadcaster with the opportunity to provide a consistent EPGrather than rely on receiver manufacturer’s implementations.

Digital Teletext and Information PublishingGames

DartsTetris

Enhanced ContentThe same types of applications can be used to deliver information tosupplement the content of a particular linear programme or advertisement. Forexample, text and pictures providing background information can accompanydocumentary series or music concerts. Games can be created that ‘play along’with the running video.Multi-viewMHEG, when running, takes control over scaling and presentation of video andpresentation of audio. This provides the means to tune to other services and toswitch between running video streams in the same multiplex. This allows abroadcaster to show more than one view of an event – for example differentmatches at a tennis tournament, different players in a golf tournament or viewsof a football match. Control of video and audio selection is achieved using theMHEG application associated with the service, not by the receiver navigator.

MHEG can also control the presentation of different audio streams related to asingle video stream. This allows a broadcaster to stream a single video streamwith sub-sections containing different content, together with more than oneaudio. The MHEG can present the subsection of the video with the appropriateaudio and associated data. This is used to present, for example, the BBCParliament Channel together with a continuous selectable news feed.

The benefits of broadcaster adoption of Open Standard MHEG/DVB SoftwareSolutions include:

• Providing opportunities to develop new and profitable revenuegenerating broadcast applications• Delivering a larger market potential through low cost consumer products• Using quality, reliable, industry standard software products• Customising MHEG-5 and DVB software to client’s needs• Using multiple sources of suppliers for interactive content and authoring tools• Obtaining quality assurance from product testing and accreditation

Application Data_Mozilla_Firefox_Profiles_x8079x0u.pdf :

MHEG-1 . نسخه یک پروفایل این گرفت قرار اقبال مورد بار نخستین برای استاندارد ارائه دلیل بهبرای که بود خاصی encodingعمومی فرض و گرفت قرار استفاده مورد ای رسانه چند اشیاء

حوزه که Applicationدرخصوص نیز گیرنده دستگاه به مربوط حوزه مورد در همینطور نداشت ها. نداشت خاصی مفروضات نیز داشت نقش کاربر به اشیاء این ارائه و پردازش و دریافت برای

ایجاد ابتدایی فلسفه و فعالیتهای MHEGریشه یک DAVICاز ایجاد اصلی میگیردهدف سرچشمه. باشد آگاه دیجیتال تلویزیون ویژگیهای از که بود محتوا دیکودر

MHEG-5 روی بر ای چندرسانه تعاملی کاربردهای اجرای و توزیع جهت پشتیبانی منظور به . توصیفی بصورت اکثرا استفاده مورد کدهای گردید طراحی مختلف برندهای با و متنوع تجهیزات

)Declarative (یا ای رویه کدهای از تا دارد وجود نیز قابلیت این اما استفاده Proceduralمیباشند نیزتا. باشد اجراء زمان مفسر یک دارای تا دارد این به نیاز گیرنده دستگاه یک طبیعی حالت در گردد

. نماید پردازش را هوا طریق از شده دریافت فرمانهای بتواند

مورد در اساسی شدن MHEG-6نکته اجرا امکان که دارد وجود آن در مکانیزمی که است این. است کرده فراهم ، شوند تفسیر مفسر توسط اینکه بجای را شده دانلود های برنامه

همچنین MHEG-6در و دارد وجود مفسر به نیاز بدون کد مستقیم اجرای برای JVMامکان نیز. است شده فراهم جاوا های برنامه اجرای امکان آمدن بوجود

MHEG-1: MHEG Object Representation, Base Notation (ASN.1), "It is the generic standardfor the encoding multimedia objects without specific assumptions on the application area or onthe target platform used for delivering and rendering these objects to the user."MHEG-2: MHEG Object Representation, Alternate Notation (SGML), "The part 2 (MHEG-2)was intended to define an SGML based encoding for the framework defined by MHEG-1.However, due to lack of resources it was cancelled before finalisation."MHEG-3: MHEG Script Interchange Representation, "MHEG-3 provides a script extension.This level basically defines an executable code which is dedicated to a virtual machine, known as

the SIR (Script Interchange Representation). The code is actually independent of the machineand the operating system."MHEG-4: MHEG Registration Procedures, "The part 4 (MHEG-4) is a “supporting” standard,which defines a registration procedure for identifiers used by the objects to identify, for example,a specific format for a content data."MHEG-5: Support for Base-Level Interactive Applications, "MHEG-5 is intended to supportthe distribution of interactive multimedia/hypermedia applications in a client/server architectureacross platforms of different types and brands. MHEG-5 is really a simplified profile of MHEG-1. Like MHEG-1, MHEG-5 develops an interpreter for interchange. However, the interpreterhas a much more simple design and requires little resources."MHEG-6: Support for Enhanced Interactive Applications, "MHEG-6 extends the declarativeMHEG-5 approach with procedural code capabilities typical of a scripting language. It definesthe interface (MHEG-5 API) and a script engine’s runtime environment on top of an MHEG-5engine using the Java virtual machine to provide a complete solution for applicationrepresentation."MHEG-7: "MHEG-7 is a new standard that aims to basically improve the MHEG-5 andextensions, by defining interoperability, the ability for one system to communicate or work withanother, and by conducting conformance tests".MHEG-8: MHEG-XML, "This new part of MHEG will provide XML encoding for MHEG-5.At present the XML DTD is being developed".EuroMHEG API has been developed by EuroMHEG initiative [183], which is taken by DigiTAG[184] and DTG. EuroMHEG API is an enhanced profile of the non-proprietary API, MHEG-5, in the form of the EuroMHEG development group. EuroMHEG contains extensions, together with European font requirements and other features that will allow MHEG 5 to stand comparison with proprietary alternatives. The aim has been to design the profile for general application and to simplify the task of migrating to the future DVB MHP operating system.

(http://www.uowm.gr/registration/eggrafa/D 3 _ 1 _CTI_ 001 _final.pdf

)

DAVIC مشخصات بر مشتمل است نموده ایجاد را فنی مشخصات از ای میباشند MHEGمجموعه. میباشند سازگار آنها با و اند گردیده ایجاد قبلی نسخه روی بر کدام هر و

کاربرد صحنه (MHEGبک یک بارگذاری از) Sceneبا ای مجموعه شامل صحنه این که میشود آغازمیباشد . نامرئی و مرئی های متغیر و ها برنامه ها، لینک

_ DAVIC 1.0 was published in January 1996. It provided a set of tools to support basicapplications such as TV distribution, near-video-on-demand, video-on-demand and simpleforms of tele-shopping._ DAVIC 1.1 was produced in September 1996. It added tools to support basic “Internetcompatibility”, the addition of microwave broadcast networks (MMDS and LMDS), set-topunits that are network-independent and set-top units that can behave as virtual machines._ DAVIC 1.2 was released in December 1996. It included some tools to enable TV networks

to provide Internet services at high speed to television and PC users, and also defined theHDTV formats and systems for conditional access._ DAVIC 1.3 is the current version, dating from September 1997. It has added: comprehensiveService and Network Management; multiple broadcast servers; mobile reception;scalable audio; content and meta-data packaging; Java APIs for DVB service information,and a new concept of contours – the first instances are the Enhanced Digital Broadcast contourand the Interactive Digital Broadcast contour.

MHEG شده ترکیب یکدیگر با میتوانند متوالی های صحنه آن در که میباشد گرا شیء محیط یکباشند . تصویر و صدا ، گرافیک شامل میتواند صحنه یک درون اشیاء دهند تشکیل را کاربرد ویک

در محلی رویدادهای به پاسخ قابلیت دکمه STBهمینطور فشردن رویداد مانند باشند داشته نیز را. تلویزیون کنترل های

MHEG کنترل یک که نمیکند مشخص دقیق چه STBبصورت دارای بایستی دیگر ورودی دستگاه یا ومیپردازد باشند داشته بایستی ها دستگاه این که وظایفی بیان به تنها بلکه باشد صورتی و فرم

. کند اشاره وظایف این شدن برآورده چگونگی به اینکه بدون

شده اشاره آنها به صحنه یک در که عناصری ولی باشد فعال میتواند کاربرد یک تنها لحظه هر در . ذیل اقالم شامل عناصر این گیرند قرار استفاده مورد فعال های صحنه دیگر در میتوانند است

میباشند:

_ links;_ procedures;_ palette;_ font;_ variable.

دادن . Java VMقرار مزیت دو دارای را دیجیتال های گیرنده و میباشد اهمیت با مشخصات درمیکند : کلیدی

شده، ارائه تعریف دانستن اینکارو با که میکند ارائه گیرنده پردازشگر موتور از تعریفی اینکه اولگیرنده مختلف مارکهای در استفاده مورد افزاری سخت پردازشگر دانستن به نیازی دیگر کاربردها

. کرد خواهند عمل صورت یک به ها گیرنده این کلیه و ندارند

. که علت این به میباشد اطمینان قابلیت آوردن ارمغان به مزیت تعریف VMدومین منظور این بهبا کاربردها میان تداخل ایجاد از همچنین و مختلف کاربردهای میان تداخل از بتواند که است شده

. کند جلوگیری عامل سیستم در انجام درحال پردازشهای

It is a language for describing multimedia presentations as a collection of objects. It includes:

Visible objects such as Bitmaps, Text boxes, Rectangles, Buttons and Sliders. Collections of objects for displaying as part of a multimedia application (Group objects). Links - objects that trigger on certain conditions and perform a sequence of actions. Programs, either resident in the engine, interchanged (downloaded) or remote (running on a

server). Variables storing integer, boolean, string, object or content references.

MHEG-5 defines two different event types:

Asynchronous events - an event that is raised by an entity outside the engine, such as user interaction, timer firing and content loading.

Synchronous events - an event that is raised as a direct result of an ElementaryAction being executed, usually indicating a change in state of an object.

ElementaryActions perform single operations, such as:

displaying and hiding Visible objects moving Visible object setting timers setting and testing variables

An Action is a list of ElementaryActions.

دیگر سوی هستند :MHEGو MHPاز اساسی اشتراکات دارای

از .1 دو طریق Encodeبرای MPEG-2هر از ارسال قابل اطالعات دیگر و صدا ویدئو، کردن. میکنند استفاده زمینی ارسال کانال

باز .2 پروتکل از دو از DSC-CCهر ای مجموعه زیر که میکنند، تا MPEG-2استفاده میباشد،شده توزیع شبکه روی بر را ای چندرسانه .client-serverاقالم دهند تحویل

یک .3 توسط که جاوا کالسهای از دو در JVMهر استفاده STBمقیم ، میشوند پشتیبانیمیکنند.

ارائه- 2 قابل پلتفورمهای

Freeview New Zealand is a consortium of Free-to-air broadcasters:

Launched on DVB-S in 2007 and DVB-T HD in 2008

Standards:DVB-T:

-SD/HD MPEG-4 H.264 AVC-MHEG-5

DVB-S: -SD MPEG-2

-MHEG-5

استاندارد پشتیبانان

Pay-per-view and Conditional AccessOcean Blue Sunrise DVB software products fully support Conditional Access (DVB-CA, CI2and CI+) systems for pay-per-view functionality.

SoftelSoftel provides the broadcaster with a complete head-end MHEG-5 and DSMCC data carouselbroadcast play-out system. Softel also provides a comprehensive infrastructure based around theMHEG head-end system.

کنندگان است؟ : STBتولید نیاز مورد اطالعاتی چه

SITEPlace of OriginModel Number

Brand name Company

China (Mainland)DVB-806OEMhttp://www.alibaba.com/product-gs/529826816/Persian_USB_DVB_T_set_top.html

Guangdong China(Mainland)

VS-DT1501VS

http://www.alibaba.com/product-gs/516848869/DVBT2_SET_TOP_BOX_MANUFACTURES_100T.html

Guangdong China (Mainland)

DVBT2 RECEIVER

OEM/ODM

ADBInteractiveweb.org

کنندگان Middlewareـولید

شرکتVoyager MHEG HDOcean Blue

استاندارد ضعف و قوت نقاط

As illustration of comparable complexity– MHP has >13000 unit tests– MHEG has <350

But there are very few, if any, broadcast applicationsfor TV that can be done in MHP and not MHEG-5

MHEG-5 loads and runs faster

Additional features include:– H.264/AVC video support for I-Frames– Adds JPEG graphics support in addition to PNG– Intelligent text rendering and square pixel format– Automatic selection between SD and HD assets depending ondisplay capability– Assumes 720 minimum vertical display resolution as ‘HD Ready’

MHEG controls the presentation and choice of multi-screen services User chooses which to view– Has access to information on each event– 40%+ of digital sports viewers in UK use these applications

-Downlodable fonts-Non Distructive tuning :

یا) حذف بدون جدید کاربرد یک شروع وریا سرویس یا کانال تغییر امکانUnload) کاربرد یک MHEGکردن

-Interaction channel streaming : Sreaming of video and audio content from internet based servers. e.g. catch up services such as BBC iPlayer-HD Rendering-Multistream channels-Educational interactive applications-Voting and Polling-Home Shopping-Interactive and Enhanced advertising-Canvas applications

Radio channels:

• Many radio services carried on Freeview• Avoid the black screen by providing ‘RadioText’• Provides information on channels, playlists, presenters, etc

Commercial Advantages of MHEG!No known patent IPR ! Low resource requirement in receiver and broadcast bandwidth ! StandardisaPon enables compePPon in supply of implementaPons ! Well established conformance regime ! Wide support in receiver designs ! Low incremental cost

! But applicaPon development is specialist compared to HTML/Javascript developer community

استاندارد- 4 جهانی های تجربه و بازار تحلیل

Certain markets,such as New Zealand, have opted for greater consistency with an MHEG-5 basedEPG.

انتخابی برودکستر کشوراستانداردMHEG-5New Zealand

BBCUKSKYUK

ArqivaFreeview NZNew zealand & UK

MediacorpSingaporeIreland

AustraliaSouth Africa

Hong Kong

Launched in New Zealand in May 2007– DVB-S receiver sales over forecast so far (already >60,000 units)– DTT launched April 2008 with MPEG-4 H.264 HD and MHEG-5

Will launch in India and in Hong Kong in 2008 Trials and evaluations in Ireland, Malaysia, Singapore, Turkey, India and Taiwan with interest from other countries in Europe, Asia and Africa

! UK Freeview and Freesat have deployed about 50m units ! CI+ deployments are heading to 100m units in Europe ! Projects are live in New Zealand, Australia, Hong Kong, Republic of Ireland ! Projects planned in other countries including South Africa

IMPALA.org:United Kingdom - Freeview (DTT), Freesat (DTH), TopUpTV (DTT pay-TV operator)Australia - Freeview (DTT)New Zealand - Freeview (DTH & DTT including HD)Hong Kong - TVB (DTT)Germany (TechniSat)Ireland (DTT)

Specified: South Africa –(DTT)India – Digicable (cable pay-TV operator)

It is also currently on the agenda – or at the trial stage – in many others including Malaysia and Thailand.

استاندارد- 5 پشتیبانان معرفی و تحلیل

SiteProduct Brand

ProductCountryCompany

Ssofts.comeMHEG5MHEG Middleware

IndiaSuresoft products in global market

pixsan.comElgistMHEG Applications, Middleware

UKPixsan

Oceanbluesoftware.comSunrise DVB

Free authoring tool : Triton

برگشت -6 خط طریق از ارائه قابل سرویسهای VOD

MHEG-5 interactive applications include:• Video on Demand• Home-shopping• Interactive and enhanced advertising• On-screen information• Voting/Polling• Interactive gaming• Electronic Programming Guides (EPG’s)• Style and function buttons for interactive hot spots• Linked pages of information, i.e. weather data• Resizing of video in a window.• Digital multimedia teletext• Selective viewing of news and information• Interactive games• Interactive applications for education• Multi-stream news presentation• IPTV support

Catch up TV

Broadcasters are now able to deploy applications such as home shopping, voting, enhanced programme guides, pushVoD, CatchUp TV (streaming-based or storage-based), and targeted advertising to create new services and revenue streams.

Other applications withMHEG interaction channel:Advanced advertisingAudience measurement (where required)Secure transactionsMicropayment and similar systems

استاندارد- 7 برای هزینه برآورد

MHEG middleware software typically less than US$1 per receiverLowest retail price in UK <€25 (MPEG-2)Basic MPEG-2 STB costs US$35 (retail)

آینده- 8 در استاندارد توسعه روند

Extensions under development for deployment in 2008– IP Interaction Channel (return path)– PVR support– Improved graphics– HD compatibility

Specification work underway within DTG workinggroups that will output to ETSI for standardisation:– Interaction channel (Return path)– HD support– Conformance tests being built by DTG Testing• In addition work is underway elsewhere:– PVR Support– Proposed new version of Common Interface, CI+ will useMHEG for user interface

IPTV extensions under discussion– MHEG control of presentation of streamed and possiblydownloaded a/v from IP source– BBC have announced that I-Player “catch-up TV” will besupported on Freesat later this year(2008)

جلسه 28/01/91نتیجه

مورد و STBدر هزینه کمترین با Specاز ها هزینه بیشترین با Specتا باال. شود گردآوری مربوطه مشخصات

مورد در فرشید از BBC red button Roadmapفایل

مورد در امینایی از دهنده S&Tفایل ارائه شرکتهای دیگر MHEGو

از برهانی S&Tمستندات

12/02/1391جلسه

محصوالت ارائه ازشرکتهای استاندارد توسعه روند از mhegسوال

Abbreviation :

IPR : Intellectual propery rights

ETSI : European Telecommunications Standards Institute

Pay-per-view and Conditional AccessOcean Blue Sunrise DVB software products fully support Conditional Access (DVB-CA, CI2and CI+) systems for pay-per-view functionality.