What is this BS EN 62298-4 - TeleWeb application about?
BS EN 62298-4 discusses teleWeb application with a focus on hyperteletext profile. BS EN 62298-4 is the fourth part of the BS EN 62298 multi-series on teleWeb application that specifies the TeleWeb Hyperteletext profile that allows Web-style text and graphics to be displayed on suitable decoders. A TeleWeb service comprises multimedia data files whose format and attributes are defined by this specification.
BS EN 62298-4 is backward compatible with IEC 62298-3 and extends it with features like scripting and style sheets. The graphical capability is extended with features like frames and forms. For information regarding general information and the transport layer, refer to IEC 62298-1 and IEC 62298-2.
Who is BS EN 62298-4 - TeleWeb application for?
BS EN 62298-4 on TeleWeb application is useful for:
- Television manufacturers
- HDR technology developers
- Research and development personnel
- Design engineers
Why should you use BS EN 62298-4 - TeleWeb application?
TeleWeb aims to deliver World Wide Web-style content to the living room TV to give the viewer an enhanced television experience. A TeleWeb service broadcasts data files containing text and high-definition graphics to suitable decoders. The data transmitted are closely linked to events within the accompanying TV programmes or are more general in nature to emulate a traditional, but higher definition, super teletext service. Different profiles are defined.
BS EN 62298-4 specifies the TeleWeb Hyperteletext profile and focuses on the presentation layer especially the implementation of TeleWeb HTML and scripting. BS EN 62298-4 further defines the graphical requirements like fonts and the content formats used.
It is the intention that TV-based decoders can be implemented in a cost-effective manner without recourse to the technology normally associated with personal computers. In part, this is achieved by limiting the number of different types of multimedia data that can be used within a service.