Computerized patching

[David Halliday (Volt Computer)]

Here are a few from Alta Vista:

http://www.semicon.mitel.com/toc_tele.html
http://www.semi.harris.com/
http://www.analog.com/products/index/10.html
http://www.maxim-ic.com/AnalogSM.htm
http://www.amcc.com/Products/CPSwitch/

The difference between a cross-point switch and an analogue multiplexer
is that the CP Switch can maintain any combination of connections
between any input and any output. A multiplexer will allow one output
from any input or will take any one input and send it to any output.
Not all inputs to all outputs.

If you can imagine the squares on a chessboard ( 8X8 ) and then put 64
switches, one on each square with each switch individually addressable,
you can get an idea of what a CP switch is.  You can also get an idea of
its complexity since you need to have direct simultaneous control over
64 switches to select between "just" eight inputs and "just" eight
outputs...

> -----Original Message-----
> From:	jbv [SMTP:JBV.SILENCES at wanadoo.fr]
> Sent:	Thursday, October 09, 1997 2:47 AM
> To:	synth-diy at horus.sara.nl
> Subject:	Re: Computerized patching
> 
> David Halliday (Volt Computer) wrote:
> > 
> > There are a family of chips which do just this - called CrossPoint
> > switches.  
> 
> Any manufactor reference / URL about that ?
> 
> And what's the difference between those chips and analog multiplexers
> ?
> 
> jbv