<s>
Digital	B-Algorithm
Video	I-Algorithm
Interactive	I-Algorithm
(	O
DVI	O
)	O
was	O
the	O
first	O
multimedia	O
desktop	O
video	O
standard	O
for	O
IBM-compatible	O
personal	B-Device
computers	I-Device
.	O
</s>
<s>
The	O
scope	O
of	O
Digital	B-Algorithm
Video	I-Algorithm
Interactive	I-Algorithm
encompasses	O
a	O
file	O
format	O
,	O
including	O
a	O
digital	O
container	O
format	O
,	O
a	O
number	O
of	O
video	O
and	O
audio	O
compression	O
formats	O
,	O
as	O
well	O
as	O
hardware	O
associated	O
with	O
the	O
file	O
format	O
.	O
</s>
<s>
DVI	O
content	O
was	O
created	O
using	O
the	O
Authology	O
Multimedia	O
authoring	O
system	O
developed	O
by	O
CEIT	O
Systems	O
and	O
usually	O
distributed	O
on	O
CD-ROM	B-Device
discs	O
,	O
which	O
in	O
turn	O
was	O
decoded	O
and	O
displayed	O
via	O
specialized	O
add-in	O
card	O
hardware	O
installed	O
in	O
the	O
computer	O
.	O
</s>
<s>
Audio	O
and	O
video	O
files	O
for	O
DVI	O
were	O
among	O
the	O
first	O
to	O
use	O
data	B-General_Concept
compression	I-General_Concept
,	O
with	O
audio	O
content	O
using	O
ADPCM	B-Algorithm
.	O
</s>
<s>
DVI	O
was	O
the	O
first	O
technology	O
of	O
its	O
kind	O
for	O
the	O
desktop	O
PC	O
,	O
and	O
ushered	O
in	O
the	O
multimedia	O
revolution	O
for	O
PCs	B-Device
.	O
</s>
<s>
DVI	O
was	O
announced	O
at	O
the	O
second	O
annual	O
Microsoft	O
CD-ROM	B-Device
conference	O
in	O
Seattle	O
to	O
a	O
standing	O
ovation	O
in	O
1987	O
.	O
</s>
<s>
The	O
excitement	O
at	O
the	O
time	O
stemmed	O
from	O
the	O
fact	O
that	O
a	O
CD-ROM	B-Device
drive	O
of	O
the	O
era	O
had	O
a	O
maximum	O
data	O
playback	O
rate	O
of	O
~	O
1.2	O
Mbit/s	O
,	O
thought	O
to	O
be	O
insufficient	O
for	O
good	O
quality	O
motion	O
video	O
.	O
</s>
<s>
The	O
first	O
implementation	O
of	O
DVI	O
developed	O
in	O
the	O
mid-80s	O
relied	O
on	O
three	O
16-bit	O
ISA	B-Architecture
cards	I-Architecture
installed	O
inside	O
the	O
computer	O
,	O
one	O
for	O
audio	O
processing	O
,	O
another	O
for	O
video	O
processing	O
,	O
and	O
the	O
last	O
as	O
an	O
interface	O
to	O
a	O
Sony	O
CDU-100	O
CD-ROM	B-Device
drive	O
.	O
</s>
<s>
The	O
DVI	O
video	O
card	O
used	O
a	O
custom	O
chipset	O
(	O
later	O
known	O
as	O
the	O
i80750	O
or	O
i750	B-General_Concept
chipset	O
)	O
for	O
decompression	O
,	O
one	O
device	O
was	O
known	O
as	O
the	O
pixel	O
processor	O
&	O
the	O
display	O
device	O
was	O
called	O
the	O
VDP	O
(	O
video	O
display	O
processor	O
)	O
.	O
</s>
<s>
Later	O
DVI	O
implementations	O
used	O
one	O
,	O
more	O
highly	O
integrated	O
card	O
,	O
such	O
as	O
Intel	O
's	O
ActionMedia	O
series	O
(	O
omitting	O
the	O
CD-ROM	B-Device
interface	O
)	O
.	O
</s>
<s>
The	O
ActionMedia	O
(	O
and	O
the	O
later	O
ActionMedia	O
II	O
)	O
were	O
available	O
in	O
both	O
ISA	B-Architecture
and	O
MCA-bus	O
cards	O
,	O
the	O
latter	O
for	O
use	O
in	O
MCA-bus	O
PCs	B-Device
like	O
IBM	O
's	O
PS/2	B-Device
series	O
.	O
</s>
<s>
Intel	O
utilized	O
the	O
i750	B-General_Concept
technology	O
in	O
driving	O
creation	O
of	O
the	O
MMX	B-Architecture
instruction	I-Architecture
set	I-Architecture
.	O
</s>
<s>
The	O
DVI	O
format	O
specified	O
two	O
video	O
compression	O
schemes	O
,	O
Presentation	O
Level	O
Video	O
or	O
Production	O
Level	O
Video	O
and	O
Real-Time	O
Video	O
and	O
two	O
audio	O
compression	O
schemes	O
,	O
ADPCM	B-Algorithm
and	O
PCM8	O
.	O
</s>
<s>
Video	O
compression	O
involved	O
coding	O
both	O
still	O
frames	O
and	O
motion-compensated	O
residuals	O
using	O
Vector	B-Algorithm
Quantization	I-Algorithm
in	O
dimensions	O
1	O
,	O
2	O
,	O
and	O
4	O
.	O
</s>
<s>
In	O
fall	O
1992	O
,	O
version	O
2.1	O
of	O
the	O
Real-Time	O
Video	O
format	O
was	O
introduced	O
by	O
Intel	O
as	O
Indeo	B-Algorithm
2	O
.	O
</s>
