gmw8868@fedeva.UUCP (02/10/88)
Help me please. I am in dire need of a black box or some sort of smart Video card for our AT computers that will run EGA and also create a composite video signal which can be fed into our Cable TV System on our broadband LAN system. Does anyone know of a EGA/RGB convertor to Composite Video encoder that is less than $15,000.00??? I need info ASAP... Thanx Mitch -- +-----------------------------------------------------------------------------+ ! Mitch Wood @ FEDERAL EXPRESS Memphis, TN | Fill in the .signature ! ! ..!gatech!emcard!fedeva!gmw8868 | "____________________________" ! +-----------------------------------------------------------------------------+
karl@lrakAT.UUCP (1602) (02/13/88)
In article <259@fedeva.UUCP> gmw8868@fedeva.UUCP (Mitch Wood) writes: >Help me please. I am in dire need of a black box or some sort >of smart Video card for our AT computers that will run EGA and >also create a composite video signal which can be fed into our >Cable TV System on our broadband LAN system. > >Does anyone know of a EGA/RGB convertor to Composite Video encoder >that is less than $15,000.00??? I am also looking for such a device, it seems unfortunate that one must buy an Amiga with a genlock device to get real, usable composite video. I am not sure why this is so hard, but their must be a market for it. I have a CGA (with very bad monochrome composite output). video card. Thanks for any info (although I know no one will respond!). ------------------------------------------------------------------------- Karl Vollbrecht V O L l b r e c ht (414) 358-1180 / 961-1602 c o n s u l t i n g -------------------------------------------------------------------------
ali@rocky.STANFORD.EDU (Ali Ozer) (02/13/88)
In article <173@lrakAT.UUCP> Karl Vollbrecht writes: >In article <259@fedeva.UUCP> gmw8868@fedeva.UUCP (Mitch Wood) writes: >>Does anyone know of a EGA/RGB convertor to Composite Video encoder >>that is less than $15,000.00??? >I am also looking for such a device, it seems unfortunate that one >must buy an Amiga with a genlock device to get real, usable composite >video. ... You don't need genlock to get composite; an Amiga 1000 provides composite signal directly, or you get a $40 RGB to composite converter (such as the Commodore A520 or the C-Ltd unit whose name I forget) to get color composite from an Amiga 500 or Amiga 2000. The genlock unit, in addition, gives you the capability to overlay Amiga graphics on an external video source... Well you say, what good does an Amiga genlock do? Well, go get yourself an Amiga 2000 with an XT card (the Bridgeboard) and a $160 AmiGen genlock. You can run *all* IBM software, all Amiga software, and get a wonderful composite signal (from Amiga side, or IBM side, or both!), and genlocking as a bonus. All for under $2500... The system even allows you to run IBM software at full speed concurrently with Amiga software. Ali Ozer, ali@rocky.stanford.edu
dlleigh@mit-amt.MEDIA.MIT.EDU (Darren L. Leigh) (02/14/88)
In article <173@lrakAT.UUCP> karl@lrakAT.UUCP (Karl Vollbrecht (414) 358-1180 / 961-1602) writes: >In article <259@fedeva.UUCP> gmw8868@fedeva.UUCP (Mitch Wood) writes: >>Help me please. I am in dire need of a black box or some sort >>of smart Video card for our AT computers that will run EGA and >>also create a composite video signal which can be fed into our >>Cable TV System on our broadband LAN system. >> >>Does anyone know of a EGA/RGB convertor to Composite Video encoder >>that is less than $15,000.00??? > >I am also looking for such a device, [ . . . ] There is a product called the EGA Wonder card (I think, it's something like that) that will allow you to display any graphics mode (mono, CGA, EGA) on any monitor (NTSC, EGA, mono (I think)). It does dithering and things to get the desired effect. I haven't seen one of the cards myself and I don't know who makes the card but I do know a dealer who sells it: Avacado Computer in Yorba Linda, CA. Their phone number is (714) 528-1025. Avacado Computer specializes in video and does custom work, too. When I dealt with them I found them to be very competent.
mark@cygnet.CYGNETSYSTEMS (Mark Quattrocchi) (02/16/88)
In article <173@lrakAT.UUCP> karl@lrakAT.UUCP (Karl Vollbrecht (414) 358-1180 / 961-1602) writes: >In article <259@fedeva.UUCP> gmw8868@fedeva.UUCP (Mitch Wood) writes: >>Help me please. I am in dire need of a black box or some sort >>of smart Video card for our AT computers that will run EGA and >>also create a composite video signal which can be fed into our >>Cable TV System on our broadband LAN system. >> >>Does anyone know of a EGA/RGB convertor to Composite Video encoder >>that is less than $15,000.00??? > >I am also looking for such a device, it seems unfortunate that one >must buy an Amiga with a genlock device to get real, usable composite >video. I am not sure why this is so hard, but their must be a market >for it. I have a CGA (with very bad monochrome composite output). >video card. > >Thanks for any info (although I know no one will respond!). My name is no one so I'll respond. If what you are looking for is an RGB to composite video convertor then you might try looking at the MC1377 from Motorola. This device accepts analog RGB inputs at 1.0v p-p and composite sync then converts it to composite video. If you have one of the three forms of digital RBG then you would have to condition the analog RGB input signals but it should still do the job for you. Hope this helps.
king@dciem.UUCP (Stephen King) (02/17/88)
In article <173@lrakAT.UUCP> karl@lrakAT.UUCP (Karl Vollbrecht (414) 358-1180 / 961-1602) writes: >In article <259@fedeva.UUCP> gmw8868@fedeva.UUCP (Mitch Wood) writes: >>Does anyone know of a EGA/RGB convertor to Composite Video encoder >>that is less than $15,000.00??? Yes. There is one advertised for $300 - $400. I think it was in Byte, but can't be sure. If I remember correctly, it is an ANALOG RGB->NTSC convertor. A few transistors will convert RGBi -> analog RGB for use with this device. >I am also looking for such a device, it seems unfortunate that one >must buy an Amiga with a genlock device to get real, usable composite >video. I am not sure why this is so hard, but their must be a market >for it. I have a CGA (with very bad monochrome composite output). >video card. Wait a minute - the genlock adaptor is NOT necessary to get composite video from an Amiga (1000) - it is available at an RCA jack on the rear of the Amiga (1000). The genlock provides synchronization with an external video source. I don't know about the 2000. >Thanks for any info (although I know no one will respond!). Just to prove you wrong :-) Elektor Electronics magazine (British), in their _Summer Circuits 86_ issue, gave a simple schematic for a CGA -> monochrome video combiner. Use this to convert digital video to analog. Use three (modified slightly) to convert RGBi to analog RGB. Motorola make the MC1377 composite video encoder. Use this to convert RGB -> NTSC. We built the circuit from the Motorola application notes and it works OK. Mail me if you have questions. Flames OK too (help cut down on my heating bill). To keep warm in winter, we in the Great White North GET DOWN. Regards, Stephen J King. -- * Defence & Civil Institute * {decvax|ihnp4|watmath}!utzoo!dciem!king * of Environmental Medicine * or uwbeaver!utcsri!dciem!king - Simulation & Training Group - or uunet!mnetor!dciem!king (may or may not endorse my opinions) or dciem!king@zorac.arpa
farren@gethen.UUCP (Michael J. Farren) (02/21/88)
mark@cygnet.UUCP (Mark Quattrocchi) writes: > >If what you are looking for is an RGB to composite video convertor >then you might try looking at the MC1377 from Motorola. Not if you're trying to produce something to go over an existing cable system (like the original poster was). EGA output is at an entirely different horizontal and vertical rate than NTSC video, and you would have to also convert this difference - a non-trivial task. -- Michael J. Farren | "INVESTIGATE your point of view, don't just {ucbvax, uunet, hoptoad}! | dogmatize it! Reflect on it and re-evaluate unisoft!gethen!farren | it. You may want to change your mind someday." gethen!farren@lll-winken.llnl.gov ----- Tom Reingold, from alt.flame