<s>
Camera	B-Protocol
Link	I-Protocol
is	O
a	O
serial	O
communication	O
protocol	O
standard	O
designed	O
for	O
camera	O
interface	O
applications	O
based	O
on	O
the	O
National	O
Semiconductor	O
interface	O
Channel-link	O
.	O
</s>
<s>
It	O
was	O
designed	O
for	O
the	O
purpose	O
of	O
standardizing	O
scientific	O
and	O
industrial	O
video	O
products	O
including	O
cameras	O
,	O
cables	O
and	O
frame	B-Device
grabbers	I-Device
.	O
</s>
<s>
The	O
standard	O
is	O
maintained	O
and	O
administered	O
by	O
the	O
Automated	O
Imaging	O
Association	O
or	O
AIA	O
,	O
the	O
global	O
machine	B-General_Concept
vision	I-General_Concept
industry	O
's	O
trade	O
group	O
.	O
</s>
<s>
Camera	B-Protocol
Link	I-Protocol
uses	O
one	O
to	O
three	O
Channel-link	O
transceiver	O
chips	O
with	O
four	O
links	O
at	O
7	O
serial	O
bits	O
each	O
.	O
</s>
<s>
At	O
a	O
minimum	O
,	O
Camera	B-Protocol
Link	I-Protocol
uses	O
28	O
bits	O
to	O
represent	O
up	O
to	O
24	O
bits	O
of	O
pixel	B-Algorithm
data	O
and	O
3	O
bits	O
for	O
video	O
sync	O
signals	O
,	O
leaving	O
one	O
spare	O
bit	O
.	O
</s>
<s>
The	O
data	O
are	O
serialized	O
7:1	O
,	O
and	O
the	O
four	O
data	O
streams	O
and	O
a	O
dedicated	O
clock	O
are	O
driven	O
over	O
five	O
LVDS	B-Architecture
pairs	O
.	O
</s>
<s>
a	O
shift	B-General_Concept
register	I-General_Concept
and	O
counter	O
may	O
be	O
employed	O
.	O
</s>
<s>
The	O
shift	B-General_Concept
register	I-General_Concept
catches	O
each	O
of	O
the	O
serialized	O
bits	O
,	O
one	O
at	O
a	O
time	O
,	O
</s>
<s>
Camera	B-Protocol
Link	I-Protocol
comes	O
in	O
several	O
variants	O
which	O
differ	O
in	O
the	O
amount	O
of	O
data	O
that	O
can	O
be	O
transferred	O
.	O
</s>
<s>
The	O
"	O
Base	O
"	O
Camera	B-Protocol
Link	I-Protocol
configuration	O
carries	O
signals	O
over	O
a	O
single	O
connector/cable	O
.	O
</s>
<s>
The	O
cable	O
used	O
is	O
a	O
MDR	O
(	O
"	O
Mini	O
D	O
Ribbon	O
"	O
)	O
26-pin	O
Male	O
Plug	O
Connector	O
,	O
optimized	O
by	O
3M	O
for	O
the	O
LVDS	B-Architecture
signal	O
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
5	O
LVDS	B-Architecture
pairs	O
transmitting	O
the	O
serialized	O
video	O
data	O
(	O
24	O
bits	O
of	O
data	O
and	O
4	O
framing/enable	O
bits	O
)	O
,	O
the	O
connector	O
also	O
carries	O
4	O
LVDS	B-Architecture
discrete	O
control	O
signals	O
and	O
2	O
LVDS	B-Architecture
asynchronous	O
serial	O
communication	O
channels	O
for	O
communicating	O
with	O
the	O
camera	O
.	O
</s>
<s>
The	O
Camera	B-Protocol
Link	I-Protocol
specification	O
includes	O
higher-bandwidth	O
configurations	O
that	O
provide	O
additional	O
video	O
data	O
paths	O
over	O
a	O
second	O
connector/cable	O
.	O
</s>
<s>
Some	O
camera	O
and	O
data	O
acquisition	O
hardware	O
manufacturers	O
have	O
extended	O
the	O
bandwidth	O
of	O
the	O
interface	O
beyond	O
the	O
limits	O
imposed	O
by	O
the	O
Camera	B-Protocol
Link	I-Protocol
interface	O
specification	O
.	O
</s>
<s>
A	O
consensus	O
has	O
emerged	O
in	O
the	O
industry	O
about	O
the	O
80-bit	O
variant	O
,	O
and	O
compatible	O
cameras	O
and	O
frame	B-Device
grabbers	I-Device
are	O
marketed	O
with	O
the	O
term	O
"	O
Camera	B-Protocol
Link	I-Protocol
Deca	O
"	O
.	O
</s>
<s>
However	O
,	O
some	O
manufacturers	O
use	O
the	O
term	O
"	O
Extended	O
Full	O
"	O
to	O
refer	O
to	O
Deca	O
configuration	O
,	O
and	O
still	O
others	O
retain	O
use	O
of	O
the	O
term	O
Camera	B-Protocol
Link	I-Protocol
Full	O
while	O
referring	O
to	O
Full	O
Deca	O
.	O
</s>
<s>
The	O
image	O
below	O
shows	O
the	O
relative	O
signal	O
timing	O
of	O
the	O
clock	O
and	O
one	O
data	O
line	O
of	O
one	O
of	O
the	O
Channel	O
Link	O
transceivers	O
used	O
for	O
Camera	B-Protocol
Link	I-Protocol
transmissions	O
.	O
</s>
<s>
The	O
bits	O
of	O
pixel	B-Algorithm
values	O
are	O
not	O
assigned	O
to	O
serial	O
transmitters	O
in	O
order	O
,	O
but	O
are	O
permutated	O
in	O
a	O
complicated	O
way	O
,	O
as	O
shown	O
in	O
the	O
following	O
figure	O
.	O
</s>
<s>
The	O
figure	O
labels	O
the	O
Camera	B-Protocol
Link	I-Protocol
data	O
bits	O
consecutively	O
and	O
includes	O
8	O
additional	O
bits	O
not	O
part	O
of	O
the	O
Camera	B-Protocol
Link	I-Protocol
Full	O
specification	O
.	O
</s>
<s>
(	O
The	O
Camera	B-Protocol
Link	I-Protocol
standard	O
divides	O
the	O
data	O
bits	O
into	O
eight	O
8-bit	O
ports	O
denoted	O
by	O
letter-number	O
combinations	O
,	O
but	O
uses	O
the	O
same	O
letter-number	O
combinations	O
for	O
color	O
channels	O
that	O
do	O
not	O
always	O
correspond	O
one-to-one	O
,	O
making	O
this	O
notation	O
ambiguous	O
.	O
)	O
</s>
<s>
To	O
the	O
left	O
of	O
the	O
transceivers	O
,	O
the	O
list	O
of	O
pixel	B-Algorithm
data	O
bits	O
transmitted	O
over	O
that	O
Channel	O
Link	O
is	O
printed	O
,	O
from	O
LSB	O
to	O
MSB	O
.	O
</s>
<s>
It	O
remains	O
to	O
be	O
said	O
how	O
pixel	B-Algorithm
data	O
bits	O
are	O
assigned	O
to	O
the	O
bits	O
0	O
to	O
71	O
used	O
in	O
the	O
figure	O
.	O
</s>
<s>
For	O
grey-scale	O
pixels	B-Algorithm
,	O
this	O
is	O
a	O
trivial	O
one-to-one	O
mapping	O
;	O
for	O
colour	O
pixels	B-Algorithm
with	O
a	O
multiple	O
of	O
8	O
bits	O
per	O
colour	O
,	O
the	O
colours	O
are	O
simply	O
concatenated	O
in	O
the	O
order	O
red	O
,	O
green	O
and	O
blue	O
(	O
from	O
LSB	O
to	O
MSB	O
)	O
.	O
</s>
<s>
The	O
standard	O
prescribes	O
26-pin	O
Miniature	O
Delta	O
Ribbon	O
connectors	O
(	O
MDR-26	O
)	O
for	O
use	O
with	O
Camera	B-Protocol
Link	I-Protocol
;	O
the	O
shrunk	O
variant	O
SDR-26	O
is	O
allowed	O
since	O
standard	O
version	O
1.2	O
.	O
</s>
<s>
Camera	B-Protocol
Link	I-Protocol
cables	O
are	O
shielded	O
twisted	O
pair	O
cables	O
.	O
</s>
<s>
The	O
Camera	B-Protocol
Link	I-Protocol
standard	O
is	O
maintained	O
by	O
the	O
AIA	O
.	O
</s>
<s>
The	O
introduction	O
of	O
the	O
Camera	B-Protocol
Link	I-Protocol
Interface	O
Standard	O
(	O
1.0	O
)	O
was	O
released	O
in	O
October	O
2000	O
.	O
</s>
<s>
The	O
standard	O
committee	O
adopted	O
version	O
1.2	O
in	O
January	O
2007	O
,	O
introducing	O
mini	O
SDR	O
(	O
"	O
Shrunk	O
D	O
Ribbon	O
"	O
)	O
connectors	O
(	O
SDR-26	O
)	O
and	O
power	O
over	O
Camera	B-Protocol
Link	I-Protocol
(	O
POCL	O
)	O
.	O
</s>
<s>
Camera	B-Protocol
Link	I-Protocol
2.0	O
was	O
released	O
in	O
November	O
2011	O
.	O
</s>
