[hpsdr] Call for Comments and Discussion - OzyII

[Henry Vredegoor]

Hi Murray,

You DO need some form of OS at both ends.
It is not the same as with an USB-interface.

Let me try to explain.

Although both devices could have a USB to USB connection using their USB
internal software for this, in case of Ethernet/TCP-IP, the device with no
Ethernet/TCP-IP does need additional software on top of the USB software to
transform this interface to do TCP-IP.
(Besides the physical interface adapter)
If the device is a computer they do this by installing extra (driver-)
software from e.g. a CD into the OS.
The OS will now be able to do all the TCP/IP processing as if the USB device
were a local Ethernet interface.

Since e.g. a generic USB printer does not have a full-fledged OS and no
native TCP/IP support (like our current HPSDR Ozy....) it cannot load this
extra software and not do the TCP/IP processing.

If we still wanted this USB printer to be connected via Ethernet and to use
TCP/IP, we would have to put a processor running the driver and TCP/IP
software in the box (this would now be "the host OS") before the USB port of
the USB printer.

This is done, but it usually is a bigger box and a lot more expensive
because you need some reasonable processing power to do this.

Maybe there are special USB-to-Ethernet adapters that do a limited Ethernet
(no TCP-IP) type of interface witch may not require a host OS (and thus no
TCP-IP software).


Hope this helps.

73's,

Henry.





> -----Original Message-----
> From: hpsdr-bounces at lists.openhpsdr.org 
> [mailto:hpsdr-bounces at lists.openhpsdr.org] On Behalf Of Murray Lang
> Sent: woensdag 22 juli 2009 11:18
> To: hpsdr at lists.openhpsdr.org
> Subject: Re: [hpsdr] Call for Comments and Discussion - OzyII
> 
> 
> ***** High Performance Software Defined Radio Discussion List *****
> 
> Hi Henry,
> 
> You don't need an OS (in the same way that you don't need to have a 
> particular OS on your remote USB printer or remote Web Cam). 
> At the PC 
> end there is a driver to to make that TCP/IP traffic look 
> like USB.  I 
> don't see a big problem with this as long as it has 
> sufficient performance.
> 
> Murray
> 
> Henry Vredegoor wrote:
> > Hi Murray,
> >
> > Since we don't have an OS  in our HPSDR setup these won't 
> work for HPSDR. (
> > yet?  ;-)  )
> >
> > Henry.
> >
> >   
> 
> 
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