mheg การใช้

• MHEG-5 is used for the electronic programming guide.
• This standard was created little later than the MHEG-6 in 1998.
• MHEG-5 specifies a hierarchy of classes that are available to the application author.
• The equivalent service on Digital television does not use this method and instead often uses MHEG.
• However, an MHEG-5 based Aertel has appeared on the digital terrestrial service Saorview.
• HTML versions of iPlayer and ITV Player will also launch, both services use MHEG-5 on first generation devices.
• Another factor is that a few cheaper boxes do not have MHEG support at all, and therefore cannot access the service.
• The standard defines two representations of MHEG applications, one of which is textual and the other is represented in ASN . 1.
• Unlike the terrestrial service, the satellite service broadcasts a more useful traditional DVB EPG alongside the functionally limited MHEG-5 EPG.
• An MHEG-5 application consists of a number of " Scenes " which the user of the application can move between.
• Instead, an MHEG application directed the user's set-top box to a hidden videostream when a correct PIN is entered.
• MHEG-5 is an object-based declarative programming language which can be used to describe a presentation of text, images and video.
• Applications are normally written in the textual notation and then encoded into ASN . 1 for interpretation by the MHEG " engine ".
• James Strickland, Freesat's director of product and technology development, explained that Freetime is a hybrid between HbbTV and MHEG-5.
• In 2003, RT?signed a deal with SysMedia to develop a MHEG-5 based version of Aertel for use on the Sky Digital platform.
• As early as 1997 the ISO ( International Organisation for Standardisation ), together with the Multimedia and Hypermedia Experts Group, published the MHEG standard.
• Another downfall is that because the application is MHEG generated, if the set-top box was switched off, access to these channels was lost.
• Within Digital television the Digital Teletext name is used extensively although the technology used to provide this service is unrelated and uses the MHEG-5 UK profile.
• They were renowned for offering the majority of features for the Freeview service including Audio description and MHEG-5, something that contemporary competing products did not.
• In July 2009, Freeview signed a licensing deal for MHEG-5, the traditional information grid pattern EPG which is covered under patents owned by Macrovision.