publish and subscribe mechanism in server

[Peter Van Osta <pvosta unionbio-eu com>]

Hi,

I am currently coupling a CORBA-server into our High Throughput
automated microscopy reader system
(http://ourworld.compuserve.com/homepages/pvosta/cvwww.htm). The
software library which I use for development has a publish and subsribe
mechanism and I can "subscribe" to an image and get a "publish" signal
when the image changes and then send it to a display. That is the way
how the original system operates, but I want to change all that to
transfer the images through CORBA.

When doing live image acquisition or video playback I want the
acquisition process to send images to the CORBA-client, but how do I
send the "event" from the CORBA-server to the client when the
server-process is continuously acquireing images ? The server process
can do automated image acquisition on a microscope at a rate of about
28000 images in less than 3 hours and when running in "live" mode, these
images have to be "streamed" to the client. It is a sort of
"server-push" instead of "client-pull".

Best regards,

Peter Van Osta

Union Biometrica N.V./S.A.
European Scientific Operations (ESO)
Cipalstraat 3
B-2440 Geel
Belgium
Tel.: +32 (0)14 570 619
Fax.: +32 (0)14 570 621

http://www.unionbio.com/