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Thread View: comp.compression
2 messages
2 total messages Started by ystan@fawlty8.en Tue, 08 Sep 1992 03:32
Compression card for video images
#3967
Author: ystan@fawlty8.en
Date: Tue, 08 Sep 1992 03:32
26 lines
1288 bytes
Below is a posting for a friend :
-----------------------------------------------------------------------------
Our research team here is trying to buy a coding/decoding card for video
images. That card should be able to receive PAL signals, compress it and
display the result on the screen. Also, it should be able to grab compressed
video data from the computer, decompress it and display it on the screen.
Our requirement is that the card must be able to perform the above encoding
and decoding functions at the same time for video conferencing purpose.
The coding algorithm implemented is not a major concern. However, JPEG
algorithm is perferred. QCIF sized image with a frame rate of no less than
15 frames per second should be sufficient for our application.

For the time being, we know that the Action Media II card for IBM-compatible
PCs and Parallax card for SUN SPARC stations can fulfil our requirement.
We are just wondering whether we have any other options available.

Thank you in advance.
-----------------------------------------------------------------------------
Please reply to one of the following email addresses :

	cheung@fawlty1.eng.monash.edu.au
	shall@eikona.eng.monash.edu.au

-----------------------------------------------------------------------------


Re: Compression card for video images
#4015
Author: leo@zelator.in-b
Date: Sun, 13 Sep 1992 17:23
59 lines
2678 bytes
In <ystan.715923157@fawlty8.eng.monash.edu.au> ystan@fawlty8.eng.monash.edu.au (Mr YS Tan) writes:

>Below is a posting for a friend :
>-----------------------------------------------------------------------------
>Our research team here is trying to buy a coding/decoding card for video
>images. That card should be able to receive PAL signals, compress it and
>display the result on the screen. Also, it should be able to grab compressed
>video data from the computer, decompress it and display it on the screen.
>Our requirement is that the card must be able to perform the above encoding
>and decoding functions at the same time for video conferencing purpose.
>The coding algorithm implemented is not a major concern. However, JPEG
>algorithm is perferred. QCIF sized image with a frame rate of no less than
>15 frames per second should be sufficient for our application.

>For the time being, we know that the Action Media II card for IBM-compatible
>PCs and Parallax card for SUN SPARC stations can fulfil our requirement.
>We are just wondering whether we have any other options available.

>Thank you in advance.
>-----------------------------------------------------------------------------
>Please reply to one of the following email addresses :

>	cheung@fawlty1.eng.monash.edu.au
>	shall@eikona.eng.monash.edu.au

>-----------------------------------------------------------------------------
Hi,
there is one more card from VideoLogic, a UK based company who is
about 6000 DM in Germany. They have a board, which can do realtime
JPEG compression of 25 frames /sec and write it directly to harddisk.
Then you can also play it back in realtime.
Resolution was about 640x480 or less in nearly true color. I saw a
demo on the last Cebit show.

We are going to have a fast framegrabber for the PC, called PC
Hurricane (TM), which can do 320x240 true color to Extended Memory in
25 frames/sec. So if you have 64 MB of RAM, you can store a few
seconds of video and encode it to MPEG via our Xing MPEG encoder (per
frame 1.5 seconds)
The PC Hurricane is 999.-DM and the MPEG encoder is 499 DM.

Have a look at the free MPEG demo for win3.x in
ftp 130.231.240.17  under pub/MPEG    MPEGXING.LZH is the file to
download.


Best regards Stefan Hartmann. c/o Gatz & Hartmann, engineering office
for Multimedia solutions.

email to: leo@zelator.in-berlin.de

--

*************************************************************
*  Stefan Hartmann       This is how to contact me:         *
*  EMAIL: leo@zelator.in-berlin.de                          *
*  Phone : ++ 49 30 344 23 66      FAX : ++ 49 30 344 92 79 *
*************************************************************

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