[BYF]

how many horizontal and vertical lines does a Pal 16:9 SD CRT TV have?

4:3 pal resolution is 720 lines x 576 lines


576i x 1.77 should give the amount of vertical lines on a 16:9 display.

so would a 16:9 tv have a resolution of something like 1020x576i, i.e 1020 vertical lines(counted horizontally) and 575 horizontal lines? (counted vertically)


or does a 16:9 tv have the same 720 vertical lines as a 4:3 TV but are spaced further apart to fill a 16:9 display?

[oldnewbie]

yes you got there in the end, same resolution but spaced further apart. I have a tosh zd26p(see sig) and it was regarded as one of the best CRTs at the time but if I crank the sharpness up and you are close enough you can see the vertical scan lines

[Lewis123]

I thought a widescreen was 848x576, or something like that, so it could display a pillarboxed 4:3 image natively.

[mike7]

CRTs don't really have any horizontaL 'lines' as such. In fact a transmitted picture whether it is widescreen or 4:3 is the same. The compressed widescreen picture triggers the set to stretch it out electronically and become 16:9. Not 100% sure if this applies to digital transmissions. The 'squashed' picture principle is as old as Cinemascope films. Examine a frame of any film and you will see it is also compressed. A lens on the projector stretches it out. Hence the term 'amorphic'.

[Lewis123]

Im pretty sure that CRTs do have a fixed horizontal resolution. I thought it was only the vertical resolutions that could be anything it wanted to (within technical limits)

[mike7]

Originally Posted by Lewis123

Im pretty sure that CRTs do have a fixed horizontal resolution. I thought it was only the vertical resolutions that could be anything it wanted to (within technical limits)

You're right of course. I don't know my horizontal from my vertical !