FACTOID # 105: The United States tops the world in plastic surgery procedures. Next comes Mexico.
 
 Home   Encyclopedia   Statistics   Countries A-Z   Flags   Maps   Education   Forum   FAQ   About 
 
WHAT'S NEW
RECENT ARTICLES
More Recent Articles »
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > Multimedia Home Platform

Multimedia Home Platform (DVB-MHP) is an open middleware system standard designed by the DVB project for interactive digital television. The MHP enables the reception and execution of interactive, Java-based applications on a TV-set. Applications can be delivered over the broadcast channel, together with audio and video streams. These applications can be for example information services, games, interactive voting, e-mail, sms or shopping. For all interactive applications an additional return channel is needed. In computing, middleware consists of software agents acting as an intermediary between different application components. ... Standardization, in the context related to technologies and industries, is the process of establishing a technical standard among competing entities in a market, where this will bring benefits without hurting competition. ... DVB, short for Digital Video Broadcasting, is a suite of internationally accepted, open standards for digital television maintained by the DVB Project, an industry consortium with more than 270 members, and published by a Joint Technical Committee (JTC) of European Telecommunications Standards Institute (ETSI), European Committee for Electrotechnical Standardization (CENELEC... Java is an object-oriented programming language developed by James Gosling and colleagues at Sun Microsystems in the early 1990s. ...

Contents


Deployment

By mid-2005 DVB-MHP largest deployments are in Italy (DVB-T) and Korea (DVB-S), with trials or small deployments in Germany, Finland, Spain, and Australia. The U.S. cable industry has specified its own middleware system referred as OCAP, which is largely based on MHP. Currently, Belgium's largest cable provider Telenet is rolling out their DVB-MHP system, called DigiBox. This page may meet Wikipedias criteria for speedy deletion. ... Telenet is the largest provider of broadband cable services in Belgium. ...


Technology

MHP software stack
MHP software stack

The MHP specifies an extensive application execution environment for digital interactive TV, independent of the underlying, vendor-specific, hardware and software. This execution environment is based on the use of a Java virtual machine and the definition of generic APIs that provide access to the interactive digital TV terminal's typical resources and facilities. The interoperable MHP applications are running on top of these APIs. A so-called Navigator-application, which is part of the terminal software, allows the user the access to all MHP applications and other DVB services (like TV and radio). Image File history File links Description: The image shows the software stack of the MHP platform version 1. ... Look up Stack in Wiktionary, the free dictionary This is a disambiguation page: a list of articles associated with the same title. ... The Java Platform is the name for a computing environment, or platform, from Sun Microsystems which can run applications developed using the Java programming language and set of development tools. ... In general terms, a virtual machine in computer science is software that creates an environment between the computer platform and the end user in which the end user can operate software. ... The term Terminal can be used in several way and includes various topics: Usually terminal means forming or pertaining to an end. ...


The MHP is just a part of a family of specifications, which all base on the Globally Executable MHP (GEM)-Standard, which was defined to allow the world-wide adoption of MHP. This article or section is in need of attention from an expert on the subject. ...


DVB-HTML

MHP applications come in two flavours. The first type are DVB-HTML applications. These are not very popular, partly because the specification for DVB-HTML was only completed with MHP 1.1, and partly because many broadcasters, box manufacturers and content developers find it too complex and difficult to implement. DVB-HTML applications are a set of HTML pages that are broadcast as part of a service. The spec is based around a modularized version of XHTML 1.1, and also includes CSS 2.0, DOM 2.0, and ECMAScript. A piece of HTML code with syntax highlighting In computing, HyperText Markup Language (HTML) is a markup language designed for the creation of web pages with hypertext and other information to be displayed in a web browser. ... The Extensible HyperText Markup Language, or XHTML, is a markup language that has the same expressive possibilities as HTML, but a stricter syntax. ... In computing, Cascading Style Sheets (CSS) is a stylesheet language used to describe the presentation of a document written in a markup language. ... Dom or DOM may refer to any of the following: In preventive maintenance, it refers to Date of Manufacture, usually figured in months. ... ECMAScript is a scripting programming language, standardized by Ecma International in the ECMA-262 specification. ...


DVB-J

The second, and by far the most popular flavour is DVB-J (DVB-Java) applications. These are written in Java using the MHP API set and consist of a set of class files that are broadcast with a service. DVB-Java applications are known as "Xlets". These are a concept similar to applets for Web pages that has been introduced by Sun in the JavaTV specification. Like applets, the xlet interface allows an external source (the application manager in the case of an MHP receiver) to start and stop an application. Java is an object-oriented programming language developed by James Gosling and colleagues at Sun Microsystems in the early 1990s. ... API may refer to: In computing, application programming interface In petroleum industry, American Petroleum Institute In education, Academic Performance Index This page concerning a three-letter acronym or abbreviation is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... In object-oriented programming, classes are used to group related variables and functions. ... Please wikify (format) this article as suggested in the Guide to layout and the Manual of Style. ... An applet is a small program that runs in the context of a larger program on a client computer. ... JavaTV is a Java-based API for iTV applications development. ...


Return channel

The MHP set-top boxes may provide a backchannel for applications that wish to communicate with the outside world, for example a voting or shopping application. Typical upstream backchannels are phone line or broadband Internet connection (ADSL, using a simple ADSL modem included in the set-top box). This is the difference with zapper set-top boxes. The term set-top box describes a device that connects to a television and some external source of signal, and turns the signal into content then displayed on the screen. ... Backchannel is the practice of using networked computers to maintain a real-time online conversation alongside live spoken remarks. ... Broadband in general electronics and telecommunications is a term which refers to a signal or circuit which includes or handles a relatively wide range of frequencies. ... Asymmetric Digital Subscriber Line (ADSL) is a form of DSL, a data communications technology that enables faster data transmission over copper telephone lines than a conventional modem can provide. ... NES Zapper TDT or satellite turner, without MHP (this last, generally includes IPTV return channel, i. ...


See also

Interactive television describes any number of efforts to allow viewers to interact with television content as they view. ... The OSGi Alliance (formerly known as the Open Services Gateway initiative) is an open standards organization. ... The Association of Radio Industries and Businesses, commonly known as ARIB, is a standardization organization in Japan. ... It has been suggested that High Definition Video be merged into this article or section. ... It has been suggested that IP Media be merged into this article or section. ... The term set-top box describes a device that connects to a television and some external source of signal, and turns the signal into content then displayed on the screen. ... NES Zapper TDT or satellite turner, without MHP (this last, generally includes IPTV return channel, i. ...

References

  • Ulrich Reimers: DVB, The Family of International Standards for Digital Video Broadcasting, Second Edition, 2005, ISBN 3-540-43545-X (chapter 14, MHP)

External links

  • OpenMHP - MHP-Open Source Project
  • Sun Microsystems' Java TV
  • iTVBox - MHP Research & Development Laboratory
  • xleTView - xleTView, MHP-Open Source Emulator at Sourceforge
  • Interactive-TV-Web - MHP/OCAP Website from Steven Morris

  Results from FactBites:
 
Broadcast Engineering - World Edition Extra: MHP and iTV: The real digital difference. (541 words)
With MHP becoming a reality, it is time to look again at this important technology — this time with the emphasis on applications.
Combining mobility and MHP was a large part of the Multimedia Car Platform (MCP) project, which has shown a prototype system in operation.
MHP datacasting solutions are available from a number of sources, some described in our January edition (“Activating Interactive TV.”) Here, Digital Storage Media-Command and Control (DSM-CC) Object Carousel Server delivers MHP data into the transmission system.
Home Toys Article (493 words)
Home servers are being developed, enabling audio and video signals, multimedia and computer data to be accessed from every room in the house, indicating the pattern of future home network structures and applications.
In addition to home automation installations, what might be described as "islands" are being created, based on various different concepts and/or systems, which are, for the present, only one part of the intelligent home and the equipment and installations that it contains.
Showing how these island solutions can be merged to create the universal, intelligent home network will be one of the main objectives of e/home, which is being held in Berlin from 29 to 31 August 2002 (www.ehome-berlin.de).
  More results at FactBites »


 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments
Please enter the 5-letter protection code

Want to know more?
Search encyclopedia, statistics and forums:

 


Lesson Plans | Student Area | Student FAQ | Reviews | Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms.