Digital
Video
Interactive
(DVIe)
technology
brings
tele-
vision’s
sights
and
sounds
to
personal
computers,
and
promises
to
make
them
less
intimidating
in
the
process.
It
is
based
on
a
simple
concept:
all
presentation
mate-
rials
are
represented
digitally
and
stored
together
on
a
random-access
device
such
as
a
hard
disk
or
CD-ROM,
and
accessed
directly
by
the
computer.
CD-ROM
is
becoming
more
commonly
used
as
an
inexpensive
distribution
and
storage
medium,
with
a
disk
holding
about
650M
bytes
of
data.
This
means
that
a
disk
can
store
about
325,000
pages
of
text
(more
if
compressed),
or
more
text
than
contained
in
the
Ency-
clopaedia
Brittanica.
On
the
other
hand,
it
can
store
only
an
hour
of
CD-quality
audio,
fewer
than
500
high-reso-
lution
still
images,
or
30
seconds
of
uncompressed
digi-
tal
motion
video.
There
are
now
hundreds
of
commer-
cially
available
applications
using
CD-ROM,
most
involving
text
only.
However,
for
CD-ROM
or
other
PC-
based
digital
devices
to
become
useful
in
a
digital
mul-
timedium
such
as
DVI
requires
substantial
compression
of
the
presentation
materials.
Compression
of
text,
au-
dio,
and
even
still
images
is
not
new.
But
what
has
been
missing
until
now
is
the
ability
to
deal
with
mo-
tion
video-requiring
both
extensive
compression
and
real-time
decompression
of
the
compressed
images.
DVI’s
key
contribution
is
to
solve
the
motion
video
problem,
completing
the
digital
medium
and
enabling
a
host
of
new
applications.
A
DVI
CD-ROM
disk
on
twen-
tieth-century
artists,
for
example,
might
consist
of
20
minutes
of
motion
video
sequences,
1,000
high-resolu-
tion
still
images,
each
accompanied
by
an
average
of
one
minute
of
audio,
and
still
have
room
for
50,000
pages
of
text
(see
Figure
1)
Digital
Video
Interactive
(DVIe)
technology
brings
tele-
vision’s
sights
and
sounds
to
personal
computers,
and
promises
to
make
them
less
intimidating
in
the
process.
It
is
based
on
a
simple
concept:
all
presentation
mate-
rials
are
represented
digitally
and
stored
together
on
a
random-access
device
such
as
a
hard
disk
or
CD-ROM,
and
accessed
directly
by
the
computer.
CD-ROM
is
becoming
more
commonly
used
as
an
inexpensive
distribution
and
storage
medium,
with
a
disk
holding
about
650M
bytes
of
data.
This
means
that
a
disk
can
store
about
325,000
pages
of
text
(more
if
compressed),
or
more
text
than
contained
in
the
Ency-
clopaedia
Brittanica.
On
the
other
hand,
it
can
store
only
an
hour
of
CD-quality
audio,
fewer
than
500
high-reso-
lution
still
images,
or
30
seconds
of
uncompressed
digi-
tal
motion
video.
There
are
now
hundreds
of
commer-
cially
available
applications
using
CD-ROM,
most
involving
text
only.
However,
for
CD-ROM
or
other
PC-
based
digital
devices
to
become
useful
in
a
digital
mul-
timedium
such
as
DVI
requires
substantial
compression
of
the
presentation
materials.
Compression
of
text,
au-
dio,
and
even
still
images
is
not
new.
But
what
has
been
missing
until
now
is
the
ability
to
deal
with
mo-
tion
video-requiring
both
extensive
compression
and
real-time
decompression
of
the
compressed
images.
DVI’s
key
contribution
is
to
solve
the
motion
video
problem,
completing
the
digital
medium
and
enabling
a
host
of
new
applications.
A
DVI
CD-ROM
disk
on
twen-
tieth-century
artists,
for
example,
might
consist
of
20
minutes
of
motion
video
sequences,
1,000
high-resolu-
tion
still
images,
each
accompanied
by
an
average
of
one
minute
of
audio,
and
still
have
room
for
50,000
pages
of
text
(see
Figure
1)
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