3  Digital video

This chapter describes the techniques and principles behind the display of video pictures in multimedia systems. It covers how the video information is digital and then translated into analogue signals for display on a monitor or TV set, via its SCART interface.

There is a single key operation that any multimedia system has to perform which makes it different from a normal PC: it has to be able to insert the video into the existing screen display, often into a special window, and still let that window be moved and changed in size as if it was a ‘standard’ PC window. As will be described, this can be a little tricky, especially with the more sophisticated video options that PCs now support, such as the ability to change picture ...

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