>The satellite receiver may be able to scale the received DVB
>signal to fit 16:9 DVB content into a 4:3 format.

This is generally done one of two ways.

- 16:9 "letterbox" format where the full 16:9 ratio picture is shown, with 
large black bands on the top and bottom of the picture.

- 14:9 "letterbox" format where there are small black bands on the top and 
bottom of the picture, and some of the picture at the sides is lost (like 
having overscan on the picture tube).

In the UK most TV sets will handle any of the three ratios, and on a 
standard 4:3 set will display a 16:9 picture at 14:9 format. The mechanism 
by which it does this I don't know, but I assume on a CRT system it adjusts 
the scan size and overscans for width, and doesn't scan the black bars at 
top and bottom, but that is only my assumption. Sometimes you see the 
picture flip as it adjusts. 

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist