1. DBSF Caribbean 2012 1
Digits

2. DBSF Caribbean 2012 2
Digital broadcasting is
history
Everything takes time to get through the system

3. DBSF Caribbean 2012 3
Digital broadcasting doesn’t
work
The system is riddled with errors

4. DBSF Caribbean 2012 4
Digital broadcasting is too fat
It takes up more space than analogue

5. DBSF Caribbean 2012 5
Digital broadcasting is
brilliant as long as …
The errors are corrected
The data is compressed

6. DBSF Caribbean 2012 6
Digital errors are only ever …
A bit is missing
A 1 is mistaken for a 0
A 0 is mistaken for a 1

7. DBSF Caribbean 2012 7
Digital compression is either…
Lossless
or
Lossy

8. DBSF Caribbean 2012 8
To compress a balloon into a
smaller space, untie the neck and
let the air out.
Reinflate ( and tie up the neck ) to
get back the balloon as good as
new.
This is LOSSLESS compression

9. DBSF Caribbean 2012 9
To compress a balloon into a
smaller space, prick it with a pin.
Reinflation NOT possible but the
bits of balloon still look a little like
a balloon
This is LOSSY compression

10. DBSF Caribbean 2012 10
To AGAIN compress that balloon
into a smaller space, cut off the
shredded rubber.
Reinflation or repair NOT possible
but the wee bit of the balloon still
looks a little like a balloon
This is CONCATENATED LOSSY
compression

11. DBSF Caribbean 2012 11
Digital broadcasting is
brilliant as long as …
The errors are corrected
The data is compressed

12. DBSF Caribbean 2012 12
Digits