<s>
Automatic	B-Application
content	I-Application
recognition	I-Application
(	O
ACR	O
)	O
is	O
a	O
technology	O
used	O
to	O
identify	O
content	O
played	O
on	O
a	O
media	O
device	O
or	O
presented	O
within	O
a	O
media	O
file	O
.	O
</s>
<s>
To	O
start	O
the	O
recognition	O
,	O
a	O
short	O
media	O
clip	O
(	O
audio	O
,	O
video	O
,	O
or	O
both	O
)	O
is	O
selected	O
from	O
within	O
a	O
media	O
file	O
or	O
captured	O
as	O
displayed	O
on	O
a	O
device	O
such	O
as	O
a	O
smart	B-Device
TV	I-Device
.	O
</s>
<s>
Using	O
techniques	O
such	O
as	O
fingerprinting	B-Algorithm
and	O
watermarking	O
,	O
the	O
selected	O
content	O
is	O
compared	O
by	O
the	O
ACR	O
software	O
with	O
a	O
database	O
of	O
known	O
recorded	O
works	O
.	O
</s>
<s>
If	O
the	O
fingerprint	B-Algorithm
of	O
the	O
media	O
clip	O
finds	O
a	O
match	O
,	O
the	O
ACR	O
software	O
returns	O
the	O
corresponding	O
metadata	O
regarding	O
the	O
media	O
as	O
well	O
as	O
other	O
associated	O
or	O
recommended	O
content	O
back	O
to	O
the	O
client	O
application	O
for	O
display	O
to	O
the	O
user	O
,	O
or	O
for	O
collection	O
by	O
the	O
device	O
manufacturer	O
or	O
a	O
data	O
aggregator	O
.	O
</s>
<s>
Two	O
leading	O
methodologies	O
for	O
audio-based	O
ACR	O
are	O
acoustic	B-Algorithm
fingerprinting	I-Algorithm
and	O
watermarking	O
.	O
</s>
<s>
Similarly	O
,	O
video	B-Algorithm
fingerprinting	I-Algorithm
is	O
used	O
to	O
facilitate	O
ACR	O
for	O
visual	O
media	O
.	O
</s>
<s>
Acoustic	B-Algorithm
fingerprinting	I-Algorithm
generates	O
unique	O
fingerprints	B-Algorithm
from	O
the	O
audio	O
content	O
itself	O
.	O
</s>
<s>
Fingerprinting	B-Algorithm
techniques	O
are	O
agnostic	O
to	O
content	O
format	O
,	O
codec	O
,	O
bit	O
rate	O
and	O
compression	O
techniques	O
.	O
</s>
<s>
This	O
makes	O
employment	O
of	O
acoustic	B-Algorithm
fingerprinting	I-Algorithm
possible	O
across	O
varying	O
networks	O
and	O
channels	O
and	O
is	O
widely	O
used	O
for	O
interactive	O
TV	O
,	O
second	O
screen	O
application	O
,	O
and	O
content	O
monitoring	O
sectors	O
.	O
</s>
<s>
Popular	O
apps	O
like	O
Shazam	B-Application
,	O
YouTube	B-General_Concept
,	O
Facebook	B-Application
,	O
Thetake	O
,	O
WeChat	B-Application
and	O
Weibo	O
reportedly	O
use	O
audio	B-Algorithm
fingerprinting	I-Algorithm
methodology	O
to	O
recognize	O
content	O
played	O
from	O
a	O
TV	O
to	O
trigger	O
additional	O
features	O
like	O
votes	O
,	O
lotteries	O
,	O
topics	O
or	O
purchases	O
.	O
</s>
<s>
In	O
contrast	O
to	O
fingerprinting	B-Algorithm
,	O
digital	O
watermarking	O
require	O
the	O
inclusion	O
of	O
digital	O
"	O
tags	O
"	O
embedded	O
within	O
the	O
digital	O
content	O
stream	O
prior	O
to	O
distribution	O
.	O
</s>
<s>
In	O
2011	O
,	O
ACR	O
technology	O
was	O
applied	O
to	O
TV	O
content	O
by	O
the	O
Shazam	B-Application
service	O
,	O
which	O
captured	O
the	O
attention	O
of	O
the	O
television	O
industry	O
.	O
</s>
<s>
Shazam	B-Application
was	O
previously	O
a	O
music	B-Application
recognition	I-Application
service	O
which	O
recognized	O
music	O
from	O
sound	O
recordings	O
.	O
</s>
<s>
By	O
utilizing	O
its	O
own	O
fingerprint	B-Algorithm
technology	O
to	O
identify	O
live	O
channels	O
and	O
videos	O
,	O
Shazam	B-Application
extended	O
their	O
business	O
to	O
television	O
programming	O
.	O
</s>
<s>
Also	O
in	O
2011	O
,	O
Samba	B-Operating_System
TV	I-Operating_System
(	O
at	O
the	O
time	O
known	O
as	O
Flingo	B-Operating_System
)	O
introduced	O
its	O
patented	O
video	O
ACR	O
technology	O
,	O
which	O
uses	O
video	B-Algorithm
fingerprinting	I-Algorithm
to	O
identify	O
on-screen	O
content	O
and	O
power	O
cross-screen	O
interactive	O
TV	O
apps	O
on	O
Smart	B-Device
TVs	I-Device
.	O
</s>
<s>
In	O
2015	O
,	O
ACR	O
technology	O
spread	O
to	O
even	O
more	O
applications	O
and	O
smart	B-Device
TVs	I-Device
.	O
</s>
<s>
Social	O
applications	O
and	O
TV	O
manufacturers	O
like	O
Facebook	B-Application
,	O
Twitter	B-Application
,	O
Google	B-Application
,	O
WeChat	B-Application
,	O
Weibo	O
,	O
LG	O
,	O
Samsung	B-Application
,	O
and	O
Vizio	O
TV	O
have	O
used	O
ACR	O
technology	O
either	O
developed	O
by	O
themselves	O
or	O
integrated	O
from	O
third	O
party	O
ACR	O
providers	O
.	O
</s>
<s>
In	O
2016	O
,	O
additional	O
applications	O
and	O
mobile	O
OS	O
embedded	O
with	O
automatic	B-Application
content	I-Application
recognition	I-Application
services	O
were	O
available	O
including	O
Peach	O
,	O
Omusic	O
and	O
Mi	O
OS	O
.	O
</s>
<s>
It	O
was	O
reported	O
in	O
Nov	O
2021	O
that	O
smart	B-Device
television	I-Device
manufacturer	O
Vizio	O
is	O
more	O
profitable	O
from	O
the	O
sale	O
of	O
their	O
customers	O
 '	O
data	O
than	O
from	O
the	O
televisions	O
they	O
sold	O
.	O
</s>
<s>
Real-time	O
audience	O
measurement	O
metrics	O
are	O
now	O
achievable	O
by	O
applying	O
ACR	O
technology	O
into	O
smart	B-Device
TVs	I-Device
,	O
set	O
top	O
boxes	O
and	O
mobile	O
devices	O
such	O
as	O
smart	O
phones	O
and	O
tablets	O
.	O
</s>
<s>
ACR	O
service	O
providers	O
include	O
,	O
ACRCloud	O
,	O
Red	O
Bee	O
Media	O
,	O
Digimarc	O
,	O
Gracenote	O
,	O
Kantar	O
Media	O
,	O
Inscape	O
Data	O
Services	O
,	O
Zapr	O
Media	O
Labs	O
,	O
Shazam	B-Application
and	O
Samba	B-Operating_System
TV	I-Operating_System
.	O
</s>
