10-03-2023, 09:06 PM
NTSC has a colour burst that's the same phase on every line. Almost anything commercially available with a composite PAL or NTSC output will be specifically designed for 625 or 525 respectively. I think some of the encoder chips (601 type digits to composite analogue) were fairly flexible but it was still hard to make them do 405.
Not sure why anyone would think of using 3x standards converters. The computer can be made to deliver RGB at 405 so what you need is an ordinary analogue coder. Like the one I designed back in 1986 and showed above. Parts of that were loosely based on the Cox 153 PAL coder which which in turn was something of an industry standard.
Not sure why anyone would think of using 3x standards converters. The computer can be made to deliver RGB at 405 so what you need is an ordinary analogue coder. Like the one I designed back in 1986 and showed above. Parts of that were loosely based on the Cox 153 PAL coder which which in turn was something of an industry standard.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
