18 Mar
2006
18 Mar
'06
21:00
In both NTSC and PAL &SECAM. The number refers to the total number of horizontal lines per frame, including the superblack sync bar. For NTSC, that number is 525 and it's 625 for PAL & SECAM. NTSC has had 525 lines, since before WW2. These numbers predate personal computers by many years. Also, NTSC is 60 fields/second or 30 frams/sec. PAL & SECAM are 50 fields and 25 frames.
So when is the US going to catch up with European technology. We moved from 405 to 625 many years ago.