Ah didn't know about that one....current is not an issue here....it's close to 0. That's why it can be done with a simple set-up like I mentioned...a cap being charged by the sync pulses I was quite impressed by the cleverness of this simple trick back then....wish I could find the schematic back....argh....
Yeah, trouble is that
1) the cable coolnovilties sells probably doesn't carry anything to pin 8 on the SCART connector
2) no idea if an added signal like that would screw up ST compatibility with that cable (if it IS ST compatible that is )
3) some people might actually like the screwed 16:9 look....
Item 1: Nothing is wired to pin 8, in fact every wire that is available is presently in use.
Item 2: This cable is 1088XEL specific and will not work properly on an ST.
The idea with the diode and cap (IIRC) can be mounted inside the SCART connector which is nice....no need for an extra wire (hack).
I like that idea . Since the Control signal is 5 VDC and a ground is available, it would be relatively easy. There's enough room in the SCART connector housing for something like a 555 and the diode/capacitor charge pump.