On 24/09/2010 09:42, alan.b.pearce@stfc.ac.uk wrote:
>>> There are historically numerous systems which derive slaves'
> addresses
>>> by polling and random duration backoff on collision algorithms, or
>>> which even assign addresses to unruly addressless rabble at start up
>>> using similar means.
>> Ethernet on a coax comes to mind surely as a famous "1 wire"
> multi-party
>> half duplex bus with all unique but unknown addresses (MAC) and
> 10Mbps.
>
> But this doesn't power the remote devices over the same wire, which I
> suspect is a feature of the 1-wire system that they want to protect (I
> haven't checked the patent to see if this is part of the description).
Pretty simple to power over the same wire if you use Manchester encoding.

You can then either use a RF filter and carrier for data over arbitrary=20
desired DC, or just use the average voltage of Manchester encoding and=20
make peak =3D Vdd x2 and have LC filter...



--=20
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