<s>
Data	B-Protocol
strobe	I-Protocol
encoding	I-Protocol
(	O
or	O
D/S	O
encoding	O
)	O
is	O
an	O
encoding	O
scheme	O
for	O
transmitting	O
data	O
in	O
digital	O
circuits	O
.	O
</s>
<s>
From	O
this	O
definition	O
it	O
is	O
more	O
obvious	O
that	O
the	O
XOR	B-Application
of	O
Data	O
and	O
Strobe	O
will	O
yield	O
a	O
clock	O
signal	O
.	O
</s>
<s>
Data	B-Protocol
strobe	I-Protocol
encoding	I-Protocol
originated	O
in	O
IEEE	O
1355	O
Standard	O
and	O
is	O
used	O
on	O
the	O
signal	O
lines	O
in	O
SpaceWire	B-Architecture
and	O
the	O
IEEE	B-Protocol
1394	I-Protocol
(	O
also	O
known	O
as	O
FireWire	B-Protocol
400	O
)	O
system	O
.	O
</s>
<s>
Gray	B-Device
code	I-Device
is	O
another	O
code	O
that	O
always	O
changes	O
one	O
logical	O
value	O
,	O
but	O
never	O
more	O
than	O
one	O
.	O
</s>
