<TV question>?

Question

what is the difference between PAL and NTSC??

can you explain it

Answer 1

These are 2 different TV systems

They differ in number of frames shown in each second

and in the size ( resolution ) of the images.

Mpeg 1 specifications ( VCD )

PAL : Image size 352 x 288 (length x height)

Frame rate : 25 fps

NTSC : Image size 352 x 240

Frame rate : 29.97 fps

Since these two systems differ in image size as well as frame rate, they are not compatible with each other.

So tv sets are made (according to region*) as PAL only system, or NTSC only system or with both.

Here in India, the tv broadcast system is PAL, so companies market tv systems with PAL only or with both PAL and NTSC.

In America ( i guess ) the system is NTSC, so there the tv sets wil be NTSC only system.

Answer 2

Pal draws 25 frames (interlaced in 50 fields) on the screen per second. NTSC draws 30 frames per second, but draws less lines per frame.  Also, there is a difference to how colour is added to each frame, but I don&#039;t know this for sure.

Answer 3

I have explained this several times before but here are the bare bones again !!

First of all PAL means Phase Alternating Line , nothing really to do do with frame rate or resolution as they were the same before CTV !

The Pal system is a development of the NTSC  system.

Main difference

PAL has automatic correction of colour changes ( HUE ) that have occurred during transmission due to terrain etc,

NTSC does not have any provision to correct colour errors !

PAL TV store alternate lines of colour information and in a DELAY Line , the stored line is then compared with the next line and any differences are then averaged out . That is what an NTSC CTV does not have namely a DELAY LINE.

Now this is the simple explanation as it is a fairly complex process , to get further into it one must look at the vector diagrams of the colour info lines and see what happens to the Red signal line by line !!then look at the NTSC . therein lies the real differences.

Cheers Pete