Media Highway™
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A proprietary operating system for interactive services. |
MHP
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Media Home Platform. An operating system (sometimes called "middleware") used in digiboxes for interactive services via satellite, terrestrial and cable networks. MHP is a relatively new, open standard advocated by all Nordic public service companies (SVT, DR, YLE, NRK). MHP allows many possibilities and is currently available in several versions. |
| Modulation |
The alteration of a carrier wave in relation to the value of the data being transferred. Analogue satellite transmission use FM modulation. Digital satellite transmission use QPSK modulation. |
| MPEG |
Moving Pictures Experts Group. An International Standards Organisation sub-group which developed a standard (MPEG-2) for the digital compression and multiplexing of video and audio signals. |
| Multicast |
To transmit a message to a select group of recipients. A simple example of multicasting is sending an e-mail message to a mailing list. Teleconferencing and videoconferencing also use multicasting, but require more robust protocols and networks. Standards are being developed to support multicasting over a TCP/IP network such as the Internet. These standards, IP Multicast and Mbone, will allow users to easily join multicast groups. Note that multicasting refers to sending a message to a select group whereas broadcasting refers to sending a message to everyone connected to a network. The terms multicast and narrowcast are often used interchangeably, although narrowcast usually refers to the business model whereas multicast refers to the actual technology used to transmit the data. |
| Mult-Element |
Or Yagi Aerial. A conventional aerial used to receive terrestrial television. |
| Multiplex |
Verb:To combine two or more independent signals into one transmission channel. Noun: The combined digital signals transmitted on one satellite transponder. |
