Sylvia Else wrote:

On 3/04/2010 10:04 PM, Michael A. Terrell wrote:

isw wrote:

Sylvia Else wrote:

If we were building an analogue colour TV transmission infrastructure
now, then maybe we'd go the NTSC route, since it eliminates the delay
line.


NTSC? No delay line? Moron. The luminance data had to be delayed to
allow time to process the Chroma data. An open delay line in a NTSC
video display caused a very dark image with moving blotches of color. I
found and replaced several, in NTSC TVs and Video Monitors.



In which case you'd know that a PAL TV contains two delay lines. One
provides a short delay and addresses the difference in delay between the
chroma path and the luminance path. The other provides a full scan line
delay to allow averaging of the chrominance signal.

It should be obvious from context that "the" delay line that I was
referring to was the latter.

But I suppose calling people morons is easier than doing your own thinking.


It is, for people who consider one as zero.


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

http://www.flickr.com/photos/materrell/