But i didn't know this what you are saying,i have a regular TV set. In fact i don't even
use it much,i watch TV on my computer with a tuner card.
By the way analog television is not 640x240.
First of all there are no pixels in analog television,just lines,and those lines
have continuous signals so you cant really talk about pixels here.
And the number of lines is not 240,it is 625 for PAL and 525 for NTSC.