Path: utzoo!utgpu!utstat!jarvis.csri.toronto.edu!mailrus!sharkey!shadooby!accuvax.nwu.edu!tank!ncar!unmvax!tut.cis.ohio-state.edu!ucbvax!hplabs!hpfcdc!hpfclm!hpfcdj!myers
From: myers@hpfcdj.HP.COM (Bob Myers)
Newsgroups: comp.graphics
Subject: Re: NTSC to Analog RGB (conversion or decoding)
Message-ID: <17670012@hpfcdj.HP.COM>
Date: 4 Apr 89 18:04:33 GMT
References: <6468@bsu-cs.UUCP>
Organization: Hewlett Packard -- Fort Collins, CO
Lines: 19

>Does anyone know of a small, and hopefully inexpensive piece of hardware
>for converting NTSC video to Analog RGB?  What I am hoping to do is
>to utilize this expensive Apple RGB monitor for more than just my computer
>graphics.  With the right converter I should be able to use it as a TV
>when hooked to the NTSC output on a VCR.  Could someone please send me the
>address of a company which makes a converter of this sort.  Thanks in advance.

There are several ICs intended for the consumer electronics industry which
do exactly this; the Motorola TDA3330 in their Linear and Interface Databook
comes to mind as one example.  However, you must realize that "NTSC" video
also implies a certain timing - that used by standard television, which is
basically 60 Hz interlaced vertical, 15.734 kHz horizontal.  If your
RGB monitor cannot accept this timing, and I suspect that it will not, then
simply converting the NTSC video to RGB signals won't buy you anything.


Bob Myers  KC0EW   HP Graphics Tech. Div.|  Opinions expressed here are not
                   Ft. Collins, Colorado |  those of my employer or any other
{the known universe}!hplabs!hpfcla!myers |  sentient life-form on this planet.