From: harti@mikro.ee.tu-berlin.de (Stefan Hartmann (Behse))
Newsgroups: comp.graphics
Subject: Re: PC Video Card
Date: 3 Jan 1993 12:11:30 GMT
Organization: ZRZ/TU-Berlin
NNTP-Posting-Host: mikro.ee.tu-berlin.de

In <9212302343.AA01708@worf.arc.nasa.gov.arc.nasa.gov> oneil@worf.arc.nasa.gov.arc.nasa.gov (Don O'Neil) writes:

>Can anyone suggest a video card that would fit this bill:

>640x480 res, 32K colors, NTSC output, w/ genlock and overlay
>1024x768 res, 256 colors, VGA output

>I'd like to get a card that I can use for animation/overlay and windows. I 
>currently have a Trident 9000 w/ 1MB. Price should be moderate (no $2000 cards
>please)

>Thanks.

Subject: Re: Saving presentations to video tape

Hi,
for recording SVGA animations or VGA (also 24 bit support)
presentations we currently have 
the following products over here in Germany:



We currently have three solutions for you:

1. 24 bit to TV converter box which is a box connected outside of the PC to
the SVGA card via its VGA connector. There must be a TSR program run
in the background to change automatically the scanning frequencies of
the SVGA board. This works also very well with win3.1
It supports up to 800x600x 65K colors (only PAL) and 640x480 with 24 bits
color (true color) on the Genoa 7900 ET4000 SVGA board.
 It has  Video (FBAS) and Y/C (SVHS/HI8)
outputs.

There is also a version of this box with additional RGB output, so you
get the best picture quality on a TV-set with SCART - RGB-inputs..

The VGA Monitor is also connected to the 24 Bit to TV converter box,
so if you don't start the driver software, your system is like normal:
You see the picture on your SVGA monitor.
The DC-power comes from the keyboard connector, so you don't have to
fiddle around with AC-DC-aptor power supplies !

Just don't start the driver software, if you don't need video out !
The box doesn't interfere with your daily work. Just forget it behind
you PC.
If you need video out, just start the 2 KBytes driver software and
then you can toggle between video out and VGA monitor display with a
hot key !

The driver software is adapted to SVGA FLIC-files from Autodesk
Animator PRO to give a 640x288 x256 colors Fullscreen-Overscan display
on PAL TV-sets. This works by using double scanning with 50 Hz
Non-Interlace !
Every scanline from the 288 is scanned twice, so it gives 640x576
Fullscreen display ! (with no flicker)

This way you can record your favourite SVGA animations to tape without
seeing any black borders !

There is also a NTSC version available, which works only up to 640x480
with 16, 256 ,32K , 65 K and 24 bits colors !
On NTSC model the 640x480 mode is already Fullscreen !


It also works with the new Hicolor FLI player, so you can play and
record hicolor animation directly from a RAMdisk to VCR tape..

You don't need NO single frame accurate expensive VCR anymore !


Cause it works also with win3.1, you can record all your daily windows         
application work to video tape !                                               
                                                                               
If you have a presentation program like Microsoft Powerpoint, no               
problem ! Just record your presentation to video tape to show it via           
video cassette to everyone, who has a VCR !                                    
                                                                               
In windows the 24 bit to TV-box works in 50 or 60 Hz Interlace to              
display the 640x480 or 800x600 (only PAL) scanlines.

This gives a little flicker on Menu-buttons, which have only very
small horizontal lines with big contrast in color. So use an
appropriate color palette under windows to reduce flicker..

With the Y/C output (SVHS/Hi8) you almost get SVGA monitor quality on your
video tape !



2. VGA2TV adaptor. This is an internal board which is hooked inside
the PC to the feature connector of the VGA card. So the VGA or SVGA
board must have a feature connector !
The VGA2TV samples the contens of the VGA RAM into its own dual ported
RAM and gives it out with the Video scanning frequencies to its Video
(FBAS) or Y/C output.
It also has a Genlock possibility. So it can be used to do titling in
front of a holiday movie video tape running in the background of the
computer graphics titles !

Input of the external video source could also be FBAS or Y/C.

This unit is called M2150 for the PAL version.
M2100 is the NTSC version.


3. VGA2TV PRO with integrated Flicker fixer. This is the new release of
the VGA2TV board. It has also a flicker filter for making the
Interlace flicker much less visible. It also has OverScan/Underscan
feature and the position of the screen on the TV set could be
controlled via software.
This board is of course more expensive than the older VGA2TV, but
still either cards are sold.
The new one is called M2200 .

Both max resolutions to convert with these VGA2TV boards are
640x480 with 256 colors ! It has the advantage, that it does not need
any software ! Just plug and it plays !




Please let me know, what you need.


Best regards Stefan Hartmann.
email to: leo@zelator.in-berlin.de

Gatz & Hartmann
Ingenierbuero fuer Multimedia-Anwendungen
Fehrbelliner Str. 32
1000 Berlin 20, Germany
Tel: ++ 49 30 - 375 55 68
FAX: ++ 49 30 - 375 55 68
FAX2:++ 49 30 - 344 92 79


Newsgroups: comp.graphics