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Article #421

More info on Video Blaster

#421
From: Henry Chung
Date: Fri, 14 Aug 1992 23:55
72 lines
2588 bytes
OK, several people sent me E-mail asking for more infomation on Vblaster.
Here is a brief description of its features. 

VIDEO ACQUISITION:
- software selectable video source from 3 composite video inputs
-supports NTSC and PAL system

WINDOWS/OVERLAYING:
-windows positioning and sizing on sigle pixel boundaries
-VGA graphics and video overlay via graphics color key (256 keys)

MASKS:
-color keying, luminance and chrominance masking

IMAGE ACQUISITION
-supports PCX,TIFF,BMP,MMP,GIF,JPEG, and TARGA
-resolution 640x480 VGA
-supports up to 2 millions true colors

IMAGE MANIPULATION
-live and still image zooming and scaling
-freeze, save and load video images
-Crop and resize images
-hue,saturation,brightness and contrast control
-vertical and horizontal panning

AUDIO MIXING
-mix amplify stereo sound (0.5W output at 4 ohms load)
-mix audio sources: stereo line-in, CD audio, stereo FM, microphone
(note: You can input audio from SoundBlaster with a special cable from 
Creative lab.   Vblaster does not come with any audio cables.:( )
-full software control of fade-in, faade-out,left/right volumes and mcrophone 
mixing

INPUTS:
-female RCA jacks for 3 video signals (75 ohms impedance)
-D-15 connector for VGA output
-Ribbon connection ofr VGA feature connector
-Mono jack for microphone input
-female RCA jacks for line input

OUTPUTS
-stereo jack speaker output
-D-15 connector to SVGA monitor

I/O memory address
-software selectable I/O address
-software selectable frame buffer base address (1-15M)
-software selectable IRQ (irq 5, 10, 11, 12)

Video frame buffer resolution
-1024x512

SYSTEM COMPATIBILITIES AND REQUIREMENTS
-IBM PC-AT and higher compatibles
-full length 16 bit slot
-VGA or multisync monitor runnning at 50-70Hz with horizontal scanning 
rate of about 31.5Kz.
- not more than 15M of system RAM. 

The package comes the following software:
-Video kit software
-MMPLAY
-VBDEMO
-TEMPRA GIF
-TEMPRA SHOW
-MACROMIND ACTION! 

Hope this infomation can answer some of your questions about vblaster.
Feel free to post any questions or send me e-mail if you want more information

/Henry
Technical Details
Message-ID: <1992Aug15.042205.8458@ryn.mro4.dec.com>
Path: arc1-ca.pugleaf.net!sparky!uunet!decwrl!pa.dec.com!rdg.dec.com!ryn.mro4.dec.com!armory.enet.dec.com!chungh

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Newsgroups: comp.multimedia
Path: arc1-ca.pugleaf.net!sparky!uunet!decwrl!pa.dec.com!rdg.dec.com!ryn.mro4.dec.com!armory.enet.dec.com!chungh
From: chungh@armory.enet.dec.com (Henry Chung)
Subject: More info on Video Blaster
Message-ID: <1992Aug15.042205.8458@ryn.mro4.dec.com>
Sender: news@ryn.mro4.dec.com (USENET News System)
Organization: Digital Equipment Corporation
Date: 14 AUG 92 23:55:42    
Lines: 72