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Script coding

Just in case anyone is wondering what I mean when I use the expression "Script Coding" here is my explanation.

Script coding is an exceptionally efficient way of getting TV pictures in front of the viewer. When a viewer watches a TV picture the information rate to their brain is very low, well under 64 kbit/s. This compares with MPEG transmission rates of 600kbit/s to 10 Mbit/s. Just ask anyone who has watched a picture what they have seen. "I saw a dog running across a park". 280 bits compared with 6 Mbits, for 10 sec of video. If they can remember that the dog was black and white, that the park was grass with big tree on the right etc, then may be allow 2000 bits per 10 seconds.

Script coding is nothing like any existing method, like PAL, MPEG etc., as it does not attempt to transfer an image in the studio to the same image at the viewers home. So you need to get some completely new ideas into your head.

In Script coding viewers all see different versions of the images, according to their personal preferences, and the price of their receiving equipment. The 'quality' could vary from cartoon style images up to high definition 3D, all based on the same broadcast signal.

Think in terms of a toy puppet theatre. A number of puppets and scenery are built (once only) and available to the operator to place on the stage and move about to various positions and with movements, in accordance with a script, plus verbal dialogue. Script coding for the visual element works in a similar manner. Information is transmitted to the viewer, once only, comprising descriptions of the objects that comprise the content of the image. Taking some simple example, such as children' cartoon programme. The various character are initially described by their shapes, colours etc and this information is sent once only, at the start of the programme. During the programme the transmitted information comprises the location and movement of the character images.

More complex programs such as quiz shows, soap operas and studio interviews need an initial description sent with the geometry of the studio, colours, textures plus similar models of the performers. Height, head shape, clothing etc. During the broadcast all that needs sending is the positional and movement information.

Note that the more the customer pays for their TV set the more complex images may be displayed, using the same input data stream.

Advances are needed in software and hardware to make the above happen, so it is really just science fiction at this time, but maybe in 25 years - who knows.

Page started 12 April 2012, amended 10 May 2015