<s>
Audio	B-Protocol
connectors	I-Protocol
and	O
video	B-Protocol
connectors	I-Protocol
are	O
electrical	B-Protocol
or	O
optical	B-Device
connectors	I-Device
for	O
carrying	O
audio	O
or	O
video	B-Application
signals	I-Application
.	O
</s>
<s>
For	O
digital	B-General_Concept
audio	O
and	O
digital	B-General_Concept
video	O
,	O
this	O
can	O
be	O
thought	O
of	O
as	O
defining	O
the	O
physical	B-Application
layer	I-Application
,	O
data	B-Protocol
link	I-Protocol
layer	I-Protocol
,	O
and	O
most	O
or	O
all	O
of	O
the	O
application	B-Application
layer	I-Application
.	O
</s>
<s>
Physical	O
characteristics	O
of	O
the	O
electrical	B-Protocol
or	O
optical	O
equipment	O
include	O
the	O
types	O
and	O
numbers	O
of	O
wires	O
required	O
,	O
voltages	O
,	O
frequencies	O
,	O
optical	O
intensity	O
,	O
and	O
the	O
physical	O
design	O
of	O
the	O
connectors	O
.	O
</s>
<s>
Any	O
data	B-Protocol
link	I-Protocol
layer	I-Protocol
details	O
define	O
how	O
application	O
data	O
is	O
encapsulated	O
(	O
for	O
example	O
for	O
synchronization	O
or	O
error-correction	B-Error_Name
)	O
.	O
</s>
<s>
Application	B-Application
layer	I-Application
details	O
define	O
the	O
actual	O
audio	O
or	O
video	B-Application
format	I-Application
being	O
transmitted	O
,	O
often	O
incorporating	O
codecs	B-General_Concept
not	O
specific	O
to	O
the	O
interface	O
,	O
such	O
as	O
PCM	B-Algorithm
,	O
MPEG-2	B-Algorithm
,	O
or	O
the	O
DTS	O
Coherent	O
Acoustics	O
codec	B-General_Concept
.	O
</s>
<s>
In	O
some	O
cases	O
,	O
the	O
application	B-Application
layer	I-Application
is	O
left	O
open	O
;	O
for	O
example	O
,	O
HDMI	B-Protocol
contains	O
an	O
Ethernet	O
channel	O
for	O
general	O
data	O
transmission	O
.	O
</s>
<s>
Some	O
types	O
of	O
connectors	O
are	O
used	O
by	O
multiple	O
hardware	B-Protocol
interfaces	I-Protocol
;	O
for	O
example	O
,	O
RCA	B-Protocol
connectors	I-Protocol
are	O
used	O
both	O
by	O
the	O
composite	O
video	O
and	O
component	O
video	O
interfaces	O
,	O
but	O
DVI	B-Protocol
is	O
the	O
only	O
interface	O
that	O
uses	O
the	O
DVI	B-Protocol
connector	I-Protocol
.	O
</s>
<s>
Analog	O
A/V	B-Protocol
connectors	I-Protocol
often	O
use	O
shielded	O
cables	O
to	O
inhibit	O
radio	O
frequency	O
interference	O
(	O
RFI	O
)	O
and	O
noise	O
.	O
</s>
<s>
Interface	O
Connectors	O
Audio	O
or	O
video	O
Digital	B-General_Concept
or	O
analog	O
Description	O
Audio	O
onlyAnalog	O
Often	O
unmarked	O
on	O
consumer	O
audio	O
equipment	O
since	O
it	O
is	O
so	O
common	O
,	O
or	O
labelled	O
with	O
headphones	B-Device
symbol	O
or	O
as	O
"	O
line	O
out	O
"	O
.	O
</s>
<s>
Computers	O
and	O
other	O
equipment	O
sometimes	O
use	O
Microsoft-Intel	O
color	O
coding	O
scheme	O
,	O
especially	O
when	O
there	O
are	O
multiple	O
input/output	O
plugs	B-Protocol
.	O
</s>
<s>
3.5	O
mm	O
TRS	O
minijackRCA	O
connector	O
Balanced	B-Protocol
audio	I-Protocol
6.35	O
mm	O
TRS	B-Device
audio	I-Device
jack	I-Device
(	O
shielded	O
twisted	O
pair	O
)	O
,	O
XLR	B-Device
(	O
shielded	O
twisted	O
pair	O
)	O
Digital	B-General_Concept
S/PDIF	O
(	O
Sony/Philips	O
Digital	B-General_Concept
Interconnect	O
Format	O
)	O
.	O
</s>
<s>
RCA	B-Protocol
jack	I-Protocol
(	O
coaxial	O
)	O
,	O
TOSLINK	B-Protocol
(	O
optical	O
)	O
,	O
BNC	B-Protocol
(	O
rare	O
)	O
AES3	O
(	O
also	O
known	O
as	O
AES/EBU	O
)	O
RCA	B-Protocol
jack	I-Protocol
(	O
coaxial	O
)	O
,	O
XLR	B-Device
(	O
shielded	O
twisted	O
pair	O
)	O
,	O
TOSLINK	B-Protocol
(	O
optical	O
)	O
,	O
BNC	B-Protocol
MADI	O
BNC	B-Protocol
(	O
coaxial	O
)	O
,	O
ST	O
(	O
optical	O
)	O
Video	O
onlyAnalog	O
Video	B-Protocol
Graphics	I-Protocol
Array	I-Protocol
(	O
VGA	B-Protocol
)	O
D-subminiature	B-Protocol
15-pin	O
Composite	O
.	O
</s>
<s>
RCA	B-Protocol
jack	I-Protocol
,	O
normally	O
yellow	O
(	O
often	O
accompanied	O
with	O
red	O
and	O
white	O
for	O
right	O
and	O
left	O
audio	O
channels	O
respectively	O
)	O
S-Video	O
(	O
Separate	O
Video	O
)	O
.	O
</s>
<s>
Mini-DIN	B-Protocol
4-pin	O
Component	O
.	O
</s>
<s>
Either	O
RGB	O
interfaces	O
or	O
YPbPr	O
3	O
RCA	B-Protocol
jacks	I-Protocol
Composite	O
,	O
S-Video	O
,	O
and	O
Component	O
VIVO	B-Protocol
=	O
Mini-DIN	B-Protocol
9-pin	O
with	O
breakout	O
cable	O
.	O
</s>
<s>
Several	O
generic	O
digital	B-General_Concept
data	I-General_Concept
connection	O
standards	O
are	O
designed	O
to	O
carry	O
audio/video	O
data	O
along	O
with	O
other	O
data	O
and	O
power	O
:	O
</s>
<s>
USB	B-Protocol
was	O
designed	O
as	O
a	O
single	O
connector	O
to	O
support	O
all	O
needs	O
,	O
including	O
any	O
generic	O
data	O
,	O
audio/video	O
,	O
power	O
,	O
and	O
more	O
;	O
DisplayLink	O
is	O
its	O
most	O
successful	O
Audio+Video	O
protocol	O
.	O
</s>
<s>
USB-C	O
can	O
directly	O
transport	O
USB	B-Protocol
3.1	O
,	O
DisplayPort	B-Protocol
,	O
Thunderbolt	B-Protocol
,	O
HDMI	B-Protocol
,	O
and	O
MHL	B-Protocol
protocols	O
,	O
with	O
power	O
,	O
and	O
audio	O
and	O
many	O
other	O
protocols	O
are	O
possible	O
.	O
</s>
<s>
Thunderbolt	B-Protocol
is	O
the	O
successor	O
to	O
FireWire	B-Protocol
,	O
a	O
generic	O
high-speed	O
data	O
link	O
with	O
well-defined	O
audio/video	O
uses	O
.	O
</s>
<s>
The	O
latest	O
Thunderbolt	B-Protocol
3	O
uses	O
USB-C	O
as	O
its	O
connector	O
,	O
though	O
not	O
all	O
USB-C	O
is	O
Thunderbolt-compatible	O
.	O
</s>
<s>
FireWire	B-Protocol
is	O
a	O
generic	O
data	O
link	O
with	O
audio/video	O
standards	O
used	O
on	O
Camcorders	O
(	O
particularly	O
MiniDV	O
)	O
,	O
and	O
high-end	O
studio	O
audio	O
and	O
video	O
equipment	O
.	O
</s>
<s>
DisplayPort	B-Protocol
carries	O
digital	B-General_Concept
audio	O
and	O
video	O
,	O
as	O
well	O
as	O
auxiliary	O
information	O
,	O
along	O
with	O
its	O
Mini	B-Protocol
DisplayPort	I-Protocol
cousin	O
.	O
</s>
<s>
Ethernet	O
using	O
modular	B-Architecture
connectors	I-Architecture
supports	O
audio	B-Protocol
over	I-Protocol
Ethernet	I-Protocol
,	O
audio	O
over	O
IP	O
,	O
IPTV	O
and	O
other	O
digital	B-General_Concept
multimedia	O
formats	O
.	O
</s>
<s>
Some	O
digital	B-General_Concept
connection	O
standards	O
were	O
designed	O
from	O
the	O
beginning	O
to	O
primarily	O
carry	O
audio	O
and	O
video	B-Application
signals	I-Application
simultaneously	O
:	O
</s>
<s>
HDMI	B-Protocol
combines	O
DVI-compliant	O
uncompressed	O
video	O
data	O
with	O
compressed	O
or	O
uncompressed	O
audio	O
,	O
and	O
supports	O
other	O
protocols	O
.	O
</s>
<s>
F	B-Protocol
connectors	I-Protocol
,	O
also	O
known	O
as	O
RF	O
connectors	O
,	O
were	O
the	O
standard	O
analog	O
connector	O
of	O
the	O
analog	O
era	O
in	O
the	O
Americas	O
,	O
used	O
primarily	O
with	O
coaxial	O
cable	O
(	O
RG-59	O
and	O
RG-6	O
)	O
,	O
and	O
have	O
been	O
repurposed	O
for	O
generic	O
digital	B-General_Concept
data	I-General_Concept
connections	O
.	O
</s>
<s>
SCART	B-Protocol
was	O
the	O
standard	O
connector	O
of	O
the	O
analog	O
era	O
in	O
Europe	O
.	O
</s>
<s>
S-Video	O
was	O
an	O
improvement	O
over	O
the	O
F	B-Protocol
connector	I-Protocol
.	O
</s>
<s>
Tip-ring	B-Device
connector	I-Device
with	O
4	O
conductors	O
.	O
</s>
<s>
S/PDIF	O
is	O
an	O
audio-only	O
format	O
carried	O
over	O
electrical	B-Protocol
coaxial	O
cable	O
(	O
with	O
RCA	B-Protocol
jacks	I-Protocol
)	O
or	O
optical	B-Architecture
fibre	I-Architecture
(	O
TOSLINK	B-Protocol
)	O
.	O
</s>
<s>
Connections	O
longer	O
than	O
6	O
meters	O
or	O
so	O
,	O
or	O
those	O
requiring	O
tight	O
bends	O
,	O
should	O
use	O
coaxial	O
cable	O
,	O
since	O
the	O
high	O
light	O
signal	O
attenuation	O
of	O
TOSLINK	B-Protocol
cables	O
limits	O
its	O
effective	O
range	O
.	O
</s>
<s>
High-Definition	B-Protocol
Multimedia	I-Protocol
Interface	I-Protocol
(	O
HDMI	B-Protocol
)	O
is	O
a	O
compact	O
audio/video	O
standard	O
for	O
transmitting	O
uncompressed	O
digital	B-General_Concept
data	I-General_Concept
.	O
</s>
<s>
There	O
are	O
three	O
HDMI	B-Protocol
connector	I-Protocol
types	O
.	O
</s>
<s>
Type	O
A	O
and	O
Type	O
B	O
were	O
defined	O
by	O
the	O
HDMI	B-Protocol
1.0	O
specification	O
.	O
</s>
<s>
Type	O
C	O
was	O
defined	O
by	O
the	O
HDMI	B-Protocol
1.3	O
specification	O
.	O
</s>
<s>
Type	O
A	O
is	O
electrically	O
compatible	O
with	O
single	O
link	O
DVI-D	O
.	O
</s>
<s>
Type	O
B	O
is	O
electrically	O
compatible	O
with	O
dual	B-Protocol
link	I-Protocol
DVI-D	O
but	O
has	O
not	O
yet	O
been	O
used	O
in	O
any	O
products	O
.	O
</s>
<s>
IEEE	B-Protocol
1394	I-Protocol
(	O
branded	O
"	O
FireWire	B-Protocol
"	O
)	O
is	O
a	O
digital	B-General_Concept
data	I-General_Concept
transfer	O
protocol	O
commonly	O
used	O
for	O
digital	B-Algorithm
cameras	I-Algorithm
(	O
common	O
on	O
MiniDV	O
tape	O
camcorders	O
)	O
,	O
but	O
also	O
used	O
for	O
computer	O
data	O
and	O
audio	O
data	O
transfers	O
.	O
</s>
<s>
Unlike	O
Point-to-Point	O
connections	O
listed	O
above	O
,	O
IEEE	B-Protocol
1394	I-Protocol
is	O
able	O
to	O
host	O
several	O
signals	O
on	O
the	O
same	O
wire	O
,	O
with	O
the	O
data	O
delivered	O
and	O
shown	O
on	O
the	O
destination	O
set	O
.	O
</s>
<s>
DisplayPort	B-Protocol
is	O
a	O
digital	B-General_Concept
display	O
interface	O
standard	O
(	O
approved	O
May	O
2006	O
,	O
current	O
version	O
1.4	O
published	O
on	O
March	O
1	O
2016	O
)	O
.	O
</s>
<s>
It	O
defines	O
a	O
new	O
license-free	O
,	O
royalty-free	O
,	O
digital	B-General_Concept
audio/video	O
interconnect	O
,	O
intended	O
to	O
be	O
used	O
primarily	O
between	O
a	O
computer	O
and	O
its	O
display	O
monitor	O
,	O
or	O
a	O
computer	O
and	O
a	O
home-theater	O
system	O
.	O
</s>
<s>
The	O
video	B-Application
signal	I-Application
is	O
not	O
compatible	O
with	O
DVI	B-Protocol
or	O
HDMI	B-Protocol
,	O
but	O
a	O
DisplayPort	B-Protocol
connector	I-Protocol
can	O
pass	O
these	O
signals	O
through	O
.	O
</s>
<s>
DisplayPort	B-Protocol
is	O
a	O
competitor	O
to	O
the	O
HDMI	B-Protocol
connector	I-Protocol
,	O
the	O
de	O
facto	O
digital	B-General_Concept
connection	O
for	O
high-definition	O
consumer	O
electronics	O
devices	O
.	O
</s>
<s>
Audio	B-Protocol
connectors	I-Protocol
are	O
used	O
for	O
audio	O
frequencies	O
.	O
</s>
<s>
They	O
can	O
be	O
analog	O
or	O
digital	B-General_Concept
.	O
</s>
<s>
Fahnestock	B-Protocol
clips	I-Protocol
on	O
early	O
breadboard	O
radio	O
receivers	O
.	O
</s>
<s>
Phone	B-Device
connector	I-Device
also	O
known	O
as	O
tip-ring-sleeve	B-Device
(	O
TRS	O
)	O
or	O
tip-sleeve	O
plug	O
,	O
phone	O
plug	O
,	O
jack	B-Device
plug	I-Device
,	O
mini-jack	O
,	O
and	O
mini-stereo	B-Device
.	O
</s>
<s>
XLR	B-Device
connectors	I-Device
,	O
also	O
known	O
as	O
Cannon	B-Device
plugs	I-Device
,	O
used	O
for	O
analog	O
or	O
digital	B-General_Concept
balanced	B-Protocol
audio	I-Protocol
with	O
a	O
balanced	O
line	O
.	O
</s>
<s>
Digital	B-Protocol
audio	I-Protocol
interfaces	I-Protocol
and	O
interconnects	O
:	O
</s>
<s>
S/PDIF	O
,	O
either	O
over	O
electrical	B-Protocol
coaxial	O
cable	O
(	O
with	O
RCA	B-Protocol
jacks	I-Protocol
)	O
or	O
optical	B-Architecture
fiber	I-Architecture
(	O
TOSLINK	B-Protocol
)	O
.	O
</s>
<s>
A	O
phone	B-Device
connector	I-Device
(	O
tip	O
,	O
ring	O
,	O
sleeve	O
)	O
also	O
called	O
an	O
audio	B-Device
jack	I-Device
,	O
phone	O
plug	O
,	O
jack	B-Device
plug	I-Device
,	O
stereo	B-Device
plug	I-Device
,	O
mini-jack	O
,	O
or	O
mini-stereo	B-Device
.	O
</s>
<s>
A	O
DIN	B-Architecture
connector	I-Architecture
is	O
a	O
connector	O
that	O
was	O
originally	O
standardized	O
by	O
the	O
Deutsches	O
Institut	O
für	O
Normung	O
(	O
DIN	B-Architecture
)	O
.	O
</s>
<s>
Mini-DIN	B-Protocol
is	O
a	O
variation	O
.	O
</s>
<s>
The	O
BNC	B-Protocol
connector	I-Protocol
is	O
a	O
very	O
common	O
type	O
of	O
RF	O
connector	O
used	O
for	O
terminating	O
coaxial	O
cable	O
.	O
</s>
<s>
TOSLINK	B-Protocol
or	O
Optical	O
Cable	O
is	O
a	O
standardized	O
optical	B-Architecture
fiber	I-Architecture
connection	O
system	O
.	O
</s>
<s>
XLR	B-Device
connector	I-Device
plugs	B-Protocol
and	O
sockets	O
are	O
used	O
mostly	O
in	O
professional	O
audio	O
and	O
video	O
electronics	O
cabling	O
applications	O
.	O
</s>
<s>
XLR	B-Device
connector	I-Device
are	O
also	O
known	O
as	O
Cannon	B-Device
plugs	I-Device
after	O
their	O
original	O
manufacturer	O
.	O
</s>
<s>
Digital	B-Protocol
audio	I-Protocol
interfaces	I-Protocol
and	O
interconnects	O
with	O
the	O
AES/EBU	O
interface	O
also	O
normally	O
use	O
an	O
XLR	B-Device
connector	I-Device
.	O
</s>
<s>
RCA	B-Protocol
connectors	I-Protocol
,	O
also	O
known	O
as	O
phono	B-Protocol
connectors	I-Protocol
or	O
phono	B-Protocol
plugs	I-Protocol
,	O
are	O
used	O
for	O
analog	O
or	O
digital	B-General_Concept
audio	O
or	O
analog	O
video	O
.	O
</s>
<s>
Initially	O
intended	O
for	O
audio-frequency	O
connections	O
only	O
,	O
the	O
RCA	B-Protocol
plug	I-Protocol
was	O
also	O
used	O
for	O
analog	O
composite	O
video	O
and	O
non-critical	O
radio-frequency	O
applications	O
.	O
</s>
<s>
Video	B-Protocol
connectors	I-Protocol
carry	O
only	O
video	B-Application
signals	I-Application
.	O
</s>
<s>
The	O
Mini-DIN	B-Protocol
connectors	I-Protocol
are	O
a	O
family	O
of	O
multi-pin	O
electrical	B-Protocol
connectors	I-Protocol
used	O
in	O
a	O
variety	O
of	O
applications	O
.	O
</s>
<s>
Mini-DIN	B-Protocol
is	O
similar	O
to	O
the	O
larger	O
,	O
older	O
DIN	B-Architecture
connector	I-Architecture
.	O
</s>
<s>
D-subminiature	B-Protocol
or	O
D-sub	B-Protocol
is	O
a	O
common	O
type	O
of	O
electrical	B-Protocol
connector	I-Protocol
used	O
particularly	O
in	O
computers	O
.	O
</s>
<s>
The	O
DB25	B-Protocol
is	O
used	O
for	O
multi-track	O
recording	O
and	O
other	O
multi-channel	O
audio	O
,	O
analog	O
or	O
digital	B-General_Concept
(	O
ADAT	O
interface	O
(	O
DB25	B-Protocol
)	O
)	O
,	O
and	O
was	O
the	O
standard	O
connector	O
for	O
IBM	O
compatible	O
PC	O
printer	O
connection	O
before	O
USB	B-Protocol
and	O
other	O
connections	O
became	O
popular	O
.	O
</s>
<s>
Video	B-Protocol
In	I-Protocol
Video	I-Protocol
Out	I-Protocol
,	O
usually	O
seen	O
as	O
the	O
acronym	O
VIVO	B-Protocol
(	O
commonly	O
pronounced	O
vee-voh	O
)	O
,	O
is	O
a	O
graphics	B-Protocol
card	I-Protocol
port	I-Protocol
which	O
enables	O
some	O
video	B-Device
cards	I-Device
to	O
have	O
bidirectional	O
(	O
input	O
and	O
output	O
)	O
video	O
transfer	O
through	O
a	O
Mini-DIN	B-Protocol
,	O
usually	O
of	O
the	O
9-pin	O
variety	O
,	O
and	O
a	O
specialised	O
splitter	O
cable	O
(	O
which	O
can	O
sometimes	O
also	O
transfer	O
sound	O
)	O
.	O
</s>
<s>
VIVO	B-Protocol
is	O
found	O
predominantly	O
on	O
high-end	O
ATI	O
video	B-Device
cards	I-Device
,	O
although	O
a	O
few	O
high-end	O
NVIDIA	O
video	B-Device
cards	I-Device
also	O
have	O
this	O
port	O
.	O
</s>
<s>
VIVO	B-Protocol
on	O
these	O
graphics	B-Device
cards	I-Device
typically	O
supports	O
Composite	O
,	O
S-Video	O
,	O
and	O
Component	O
as	O
outputs	O
,	O
and	O
composite	O
and	O
S-Video	O
as	O
inputs	O
.	O
</s>
<s>
Many	O
other	O
video	B-Device
cards	I-Device
only	O
support	O
component	O
and/or	O
S-Video	O
outputs	O
to	O
complement	O
Video	B-Protocol
Graphics	I-Protocol
Array	I-Protocol
or	O
DVI	B-Protocol
,	O
typically	O
using	O
a	O
component	O
breakout	O
cable	O
and	O
an	O
S-Video	O
cable	O
.	O
</s>
<s>
The	O
Digital	B-Protocol
Visual	I-Protocol
Interface	I-Protocol
(	O
DVI	B-Protocol
)	O
is	O
a	O
video	O
interface	O
standard	O
designed	O
to	O
maximize	O
the	O
visual	O
quality	O
of	O
digital	B-General_Concept
display	O
devices	O
such	O
as	O
flat	O
panel	O
LCD	O
computer	O
displays	O
and	O
digital	B-General_Concept
projectors	O
.	O
</s>
<s>
It	O
is	O
designed	O
for	O
carrying	O
uncompressed	O
digital	B-General_Concept
video	O
data	O
to	O
a	O
display	O
.	O
</s>
<s>
In	O
those	O
that	O
do	O
,	O
the	O
connector	O
is	O
sometimes	O
referred	O
to	O
as	O
DVI-DL	B-Protocol
(	O
dual	B-Protocol
link	I-Protocol
)	O
.	O
</s>
<s>
†	O
Although	O
the	O
mic	O
input	O
is	O
usually	O
mono	O
,	O
the	O
input	O
is	O
still	O
a	O
TRS	B-Device
phone	I-Device
socket	I-Device
.	O
</s>
<s>
Many	O
mono	O
'	O
computer	O
 '	O
mics	O
are	O
fitted	O
with	O
TRS	O
plugs	B-Protocol
.	O
</s>
<s>
Older	O
sound	B-Device
cards	I-Device
had	O
non-standard	O
colour	O
codes	O
until	O
after	O
PC	O
99	O
,	O
prior	O
to	O
that	O
there	O
were	O
no	O
colors	O
at	O
all	O
.	O
</s>
<s>
Older	O
sound	B-Device
cards	I-Device
had	O
no	O
common	O
standard	O
color	O
codes	O
until	O
after	O
PC	O
99	O
.	O
</s>
<s>
PC99	O
introduced	O
a	O
color	O
code	O
for	O
the	O
various	O
standard	O
types	O
of	O
plugs	B-Protocol
and	O
connectors	O
used	O
on	O
PCs	O
.	O
</s>
<s>
The	O
color	O
codes	O
for	O
audio	B-Protocol
plugs	I-Protocol
follow	O
:	O
</s>
<s>
†	O
Though	O
the	O
input	O
is	O
often	O
mono	O
,	O
the	O
actual	O
connector	O
is	O
usually	O
still	O
a	O
3-conductor	O
TRS	O
phone	O
minijack	B-Device
.	O
</s>
<s>
Many	O
mono	O
computer	O
microphones	B-Application
have	O
3-conductor	O
TRS	O
plugs	B-Protocol
.	O
</s>
<s>
For	O
efficiency	O
and	O
simplicity	O
,	O
the	O
same	O
codec	B-General_Concept
or	O
signal	O
convention	O
is	O
used	O
by	O
the	O
storage	O
medium	O
.	O
</s>
<s>
For	O
example	O
,	O
VHS	O
tapes	O
can	O
store	O
a	O
magnetic	O
representation	O
of	O
an	O
NTSC	O
signal	O
,	O
and	O
the	O
specification	O
for	O
Blu-ray	O
Discs	O
incorporates	O
PCM	B-Algorithm
,	O
MPEG-2	B-Algorithm
,	O
and	O
DTS	O
.	O
</s>
<s>
Some	O
playback	O
devices	O
can	O
re-encode	O
audio	O
or	O
video	O
so	O
that	O
the	O
format	O
used	O
for	O
storage	O
does	O
not	O
have	O
to	O
be	O
the	O
same	O
as	O
the	O
format	O
transmitted	O
over	O
the	O
A/V	O
interface	O
(	O
which	O
is	O
helpful	O
if	O
a	O
projector	O
or	O
monitor	O
cannot	O
handle	O
a	O
newer	O
codec	B-General_Concept
)	O
.	O
</s>
