
Figure 6.5
Interlaced scan-
ning
forms a complete
picture - the
frame -
from
two
fields,
each comprising
half of the total number of
scanning lines. The second
field is delayed by half the
frame time from the first. This
example shows 525 lines.
I detailed spot profile in
Image
structure,
on page 43.
It is confusing to refer to fields as
odd
and
even.
Use
first /ield
and
second field
instead.
RCA trademarked the word
Proscan,
but RCA - now Thomson -
confusingly uses that word to
describe both progressive and
interlaced television receivers!
Interlaced scanning
I have treated the image array as a matrix of SAL ...