bollard@marlin.NOSC.MIL (Jennifer Bollard) (01/21/89)
I'm posting this for a friend. You guys are pretty tough out there - please don't holler if this is posted to the wrong place. He wants to know if a VCR tape can be projected on a VGA monitor, using a Paradise graphics card. Is this possible? If so, what hardware/software is needed? Please send any responses to me via e-mail, and I'll pass them along. Thanks.
UD047203@NDSUVM1.BITNET (01/25/89)
The VCR use composite analog signal, where the RGB are encode in one signal
(RS-170). VGA standard are analog signal, but RGB are seperated. Note that
VGA monitor has 15 pin out. There is a way to convert RGB signal to NTSC
signal (RS-170) , but as far as I know there is no easy way to convert from
NTSC signal to RGB signal.
Larryfargo@pawl.rpi.edu (Ethan M. Young) (01/26/89)
I would be very interested in how to convert an RGB signal to NTSC and vice
versa. (Especially as I have a b&w monitor and a NEC MultiSync, I would like
color!) Any information anyone could send me on this subject would be greatly
appreciated.
Thank you and happy hunting! Internet: fargo@pawl.rpi.edu ____ [> SB <] fargo@{paraguay|uruguay}.acm.rpi.edo
/__ -=>??<=- Bitnet (??): usergac0@rpitsmts.bitnet
/ ARGO : 3000 years of regression from the year 4990vg55611@ihuxy.ATT.COM (Gopal) (01/26/89)
In article <1776UD047203@NDSUVM1> UD047203@NDSUVM1.BITNET writes: >The VCR use composite analog signal, where the RGB are encode in one signal >(RS-170). VGA standard are analog signal, but RGB are seperated. Note that >VGA monitor has 15 pin out. There is a way to convert RGB signal to NTSC >signal (RS-170) , but as far as I know there is no easy way to convert from >NTSC signal to RGB signal. Larry Then I wonder how one converts images taken using a video camera into digital pictures (various formats .TGA, .GIF, .TIF etc.) There seem to be many people who have that capability. Anyone care to shed some light on the subject ? Venu P. Gopal UUCP: att!ihuxy!vg55611 Internet: vg55611@ihuxy.att.com BITNET: com%"vg55611@ihuxy.att.com" or com%"vg55611%ihuxy@research.att.com"
ciemo@bananapc.SGI.COM (Dave Ciemiewicz) (01/27/89)
In article <1776UD047203@NDSUVM1>, UD047203@NDSUVM1.BITNET writes: > ... > signal (RS-170) , but as far as I know there is no easy way to convert from > NTSC signal to RGB signal. > > Larry Isn't NTSC to RGB conversion done inside just about every color TV set in North America? -- ciemo (pronounced SEE-MO) "Language is a virus from outer space." Ciemiewicz (pronounced SI-MI-WITZ) -- William S. Burroughs Dave (pronounced DAYV)
myers@hpfcdj.HP.COM (Bob Myers) (01/28/89)
>I would be very interested in how to convert an RGB signal to NTSC and vice >versa. (Especially as I have a b&w monitor and a NEC MultiSync, I would like >color!) Any information anyone could send me on this subject would be greatly >appreciated. There is not an "easy" solution for this, as the conversion in either direction requires some fancy encoding/decoding which is best done by some specialized ICs; I refer you to the Motorola Linear and Interface ICs data book for some examples. (Note particularly the MC1377 NTSC encoder.) However, one basic question should be answered first; "NTSC" video not only implies a means of color encoding, but also a very specific timing. Most "computer" video formats do not match NTSC timing, and it takes a rather sophisticated converter to take non-NTSC-rate RGB and produce a signal suitable for viewing on the ol' home TV. You should also realize the you WILL lose image quality in going from nearly any RGB signal to NTSC; besides the low-res timing, NTSC encoding *purposely* reduces the effective color resolution. It also is not particularly good at color fidelity (hence the old joke "NTSC = Never Twice the Same Color"). Further discussion on NTSC/RGB conversion and color encoding in general may be more appropriate in sci.electronics or rec.video. 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.
keller@ficc.uu.net (Curtis Keller) (01/31/89)
In article <2823@ihuxy.ATT.COM>, vg55611@ihuxy.ATT.COM (Gopal) writes: > In article <1776UD047203@NDSUVM1> UD047203@NDSUVM1.BITNET writes: > >The VCR use composite analog signal, where the RGB are encode in one signal > >(RS-170). VGA standard are analog signal, but RGB are seperated. Note that > >VGA monitor has 15 pin out. There is a way to convert RGB signal to NTSC > >signal (RS-170) , but as far as I know there is no easy way to convert from > >NTSC signal to RGB signal. Larry > Data Translation (100 Locke Drive, Marlboro, MA 01752, (617)-481-3700)) sells such a product "DT2869 Video Decoder/Encoder" to convert NTSC or PAL into RGB and vice versa, the ~$1000 board plugs into an IBM PC. Call them and ask for a catalog --- it has some nice stuff in it, but I have not ordered anything so I can not vouch for them. > Then I wonder how one converts images taken using a video camera > into digital pictures (various formats .TGA, .GIF, .TIF etc.) > Data Translation also sells "frame grabbers" to connect a video camera to a PC or Mac. Curtis Keller Ferranti International Controls Corporation 12808 W. Airport Blvd. Sugar Land, Tx 77478 UUCP: uunet!ficc!keller OR keller@ficc.uu.net Phone: (713) 274-5089