| 摘要 |
In the transmission of multimedia and hypermedia services to a mobile receiver no mechanisms have yet been specified in new radio systems, such as the DAB system for transmitting service components and files so that the software of the receiver would be able to receive, combine, form, present and execute the services in the way desired by the user. In accordance with the invention, the service is divided into files at the transmission end. Each file is associated with a group of parameters called a message type. The message types are: file transfer description, file content description, file presentation description and file execution description. By filtering the files utilizing their message types, the receiver can separate selectively from the service channel only the required files or service elements.
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