<s>
Loop	B-General_Concept
recording	I-General_Concept
is	O
the	O
process	O
of	O
recording	O
audio	O
continuously	O
to	O
an	O
endless	B-General_Concept
tape	I-General_Concept
(	O
if	O
magnetic	O
tape	O
is	O
used	O
)	O
or	O
to	O
computer	B-General_Concept
memory	I-General_Concept
,	O
or	O
recording	O
video	O
feeds	O
(	O
such	O
as	O
from	O
video	O
surveillance	O
or	O
camera	O
signals	O
)	O
on	O
a	O
video	O
server	O
.	O
</s>
<s>
This	O
process	O
is	O
a	O
never-ending	O
one	O
:	O
at	O
the	O
end	O
of	O
the	O
internal	O
disk	B-Device
drive	I-Device
,	O
the	O
recording	O
process	O
continues	O
to	O
record	O
at	O
the	O
beginning	O
,	O
erasing	O
the	O
previously	O
recorded	O
material	O
and	O
replacing	O
it	O
with	O
the	O
new	O
content	O
.	O
</s>
<s>
Generally	O
,	O
it	O
is	O
possible	O
to	O
write-protect	B-Device
some	O
selected	O
parts	O
(	O
as	O
video	O
clips	O
)	O
to	O
prevent	O
erasure	O
.	O
</s>
