NTSC

So I been doing some work with the TVout library.

It works fine, but I want to know how it works.

Can someone:

a) point me to a tutorial on how NTSC works

or

b) • tell me how the whole signal can be sent over only on line
• What is the purpose of the sync and video lines converging (see schematic on above link)

Thanks!

Great! Thanks!

FYI the vertical sync pulses in the link KE7GKP posted are not correct, they will work most of the time however(its what TVout does).

A few more links:
http://www.sxlist.com/techref/io/video/ntsc.htm