Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!uunet!mcsun!hp4nl!cbmnlux!cbmehq!cbmger!peterk From: peterk@cbmger.UUCP (Peter Kittel GERMANY) Newsgroups: comp.sys.amiga.graphics Subject: Re: DCTV Message-ID: <1179@cbmger.UUCP> Date: 30 Apr 91 08:37:37 GMT References: <997@celia.UUCP> <1161@cbmger.UUCP> <1002@celia.UUCP> Reply-To: peterk@cbmger.UUCP (Peter Kittel GERMANY) Organization: Commodore Bueromaschinen GmbH, West Germany Lines: 41 In article <1002@celia.UUCP> celia!neil@usc.edu (Neil Richmond) writes: >In article <1161@cbmger.UUCP> peterk@cbmger.UUCP (Peter Kittel GERMANY) writes: > >>Now this is false. I know of a very good board from Germany/Austria >>(the Videomaster VD2001) that provides true 24-bit graphics plus >>necessarily NTSC output, because it's thought for use in a professional ^^^^ (Sorry, this is really PAL, but not principle difference.) >>video environment. And there you don't have a different choice. > >Peter, NTSC is not 24 bits of display. ..... >...... If I remember correctly NTSC can >only resolve something like 300,000 colors. That is not 24 bits. Ok, ok, NTSC (or the same with PAL) can't take *full* advantage of those 24 bits, but they can give much more colors than the normal 4096 colors display. >You have misunderstood me here. It is true that they convert an RGB signal to >NTSC. However, it is some kind of clever encoding scheme. As far as I understand the problem with NTSC (and PAL) coding is that under these schemes you cannot use full saturated colors and must limit the saturation (depending on which color) to a level NTSC can take up with. This indeed can be done by such a clever encoding scheme. > What I was saying >is, that in the manual they are advertising a device that will take the output >of the DCTV and turn it into RGB again, only decoded. How they will do this is >a complete mystery to me, because they will be taking an inferior quality >signal, NTSC and turning it into RGB. I guess there's no magic at all. They sure don't take the analog NTSC signal as source, but the digital RGB data available one step earlier in their box. Then they perhaps need a little adaptor board to make these signal lines available. But this is all pure speculation. -- Best regards, Dr. Peter Kittel // E-Mail to \\ Only my personal opinions... Commodore Frankfurt, Germany \X/ {uunet|pyramid|rutgers}!cbmvax!cbmger!peterk