<s>
A	O
still	B-Algorithm
video	I-Algorithm
camera	I-Algorithm
(	O
SVC	O
)	O
is	O
a	O
type	O
of	O
electronic	O
camera	O
that	O
takes	O
still	O
images	O
and	O
stores	O
them	O
as	O
single	O
frames	O
of	O
video	O
.	O
</s>
<s>
They	O
peaked	O
in	O
popularity	O
in	O
the	O
late	O
1980s	O
and	O
can	O
be	O
seen	O
as	O
the	O
predecessor	O
to	O
the	O
digital	B-Device
camera	I-Device
.	O
</s>
<s>
The	O
most	O
common	O
design	O
has	O
an	O
image	O
sensor	O
and	O
basic	O
processing	O
hardware	O
similar	O
to	O
that	O
of	O
a	O
consumer	O
camcorder	O
designed	O
for	O
analog	O
television	O
using	O
the	O
appropriate	O
regional	O
format	O
(	O
NTSC	O
,	O
PAL	B-Language
,	O
or	O
SECAM	O
)	O
.	O
</s>
<s>
However	O
,	O
instead	O
of	O
storing	O
consecutive	O
interlaced	O
fields	O
on	O
tape	O
to	O
form	O
a	O
moving	O
image	O
,	O
a	O
single	O
field	O
or	O
frame	O
(	O
combined	O
from	O
two	O
fields	O
)	O
is	O
extracted	O
from	O
the	O
output	O
video	O
signal	O
and	O
saved	O
on	O
a	O
rotating	O
magnetic	B-Architecture
disk	I-Architecture
,	O
typically	O
a	O
standard	O
Video	O
Floppy	O
.	O
</s>
<s>
Since	O
the	O
image	O
is	O
stored	O
as	O
a	O
conventional	O
analog	O
video	O
field	O
or	O
frame	O
,	O
the	O
resolution	O
is	O
limited	O
to	O
the	O
regional	O
SDTV	B-Device
format	O
;	O
in	O
addition	O
,	O
since	O
the	O
images	O
are	O
not	O
stored	O
digitally	O
,	O
transferring	O
the	O
images	O
to	O
a	O
computer	O
requires	O
a	O
video	O
capture	O
card	O
.	O
</s>
<s>
Processing	O
the	O
image	O
data	O
from	O
a	O
CCD	B-Algorithm
sensor	I-Algorithm
into	O
a	O
digital	O
file	O
would	O
have	O
required	O
a	O
supercomputer	O
at	O
the	O
time	O
,	O
so	O
a	O
strategic	O
decision	O
was	O
made	O
to	O
use	O
analog	O
recording	O
methods	O
,	O
and	O
Canon	O
recruited	O
Sony	O
and	O
other	O
manufacturers	O
to	O
create	O
a	O
standard	O
format	O
,	O
resulting	O
in	O
the	O
Video	O
Floppy	O
.	O
</s>
<s>
The	O
first	O
still	B-Algorithm
video	I-Algorithm
camera	I-Algorithm
was	O
a	O
prototype	O
Mavica	B-Algorithm
(	O
a	O
portmanteau	O
of	O
magnetic	B-Algorithm
video	I-Algorithm
camera	I-Algorithm
)	O
,	O
which	O
was	O
unveiled	O
by	O
Sony	O
chair	O
Akio	O
Morita	O
on	O
August	O
24	O
,	O
1981	O
.	O
</s>
<s>
The	O
prototype	O
Mavica	B-Algorithm
was	O
equipped	O
with	O
an	O
interchangeable	O
lens	O
and	O
was	O
approximately	O
the	O
size	O
and	O
weight	O
of	O
a	O
conventional	O
35mm	O
SLR	O
camera	O
at	O
and	O
.	O
</s>
<s>
The	O
Mavica	B-Algorithm
was	O
equipped	O
with	O
a	O
single	O
CCD	B-Algorithm
sensor	I-Algorithm
with	O
a	O
basic	O
resolution	O
of	O
570×490	O
,	O
but	O
resolution	O
was	O
limited	O
to	O
approximately	O
350	O
horizontal	O
lines	O
.	O
</s>
<s>
This	O
was	O
because	O
it	O
was	O
designed	O
for	O
video	O
playback	O
,	O
which	O
is	O
composed	O
of	O
interlaced	O
video	O
fields	O
of	O
approximately	O
240	O
–	O
280	O
horizontal	O
lines	O
;	O
the	O
Mavica	B-Algorithm
's	O
resolution	O
was	O
slightly	O
boosted	O
by	O
recording	O
color	O
information	O
on	O
a	O
separate	O
FM	O
channel	O
,	O
instead	O
of	O
as	O
a	O
subcarrier	O
to	O
the	O
analog	O
signal	O
.	O
</s>
<s>
At	O
the	O
time	O
,	O
Sony	O
stated	O
it	O
would	O
be	O
15	O
to	O
24	O
months	O
before	O
the	O
Mavica	B-Algorithm
would	O
be	O
marketed	O
,	O
at	O
an	O
estimated	O
cost	O
of	O
for	O
the	O
camera	O
and	O
an	O
additional	O
for	O
the	O
playback	O
unit	O
.	O
</s>
<s>
Polaroid	O
offered	O
no	O
comment	O
regarding	O
Sony	O
's	O
Mavica	B-Algorithm
,	O
but	O
previously	O
had	O
published	O
a	O
patent	O
describing	O
a	O
camera	O
that	O
stored	O
images	O
electronically	O
by	O
1980	O
.	O
</s>
<s>
Kodak	O
was	O
developing	O
its	O
own	O
CCD	B-Algorithm
sensors	I-Algorithm
and	O
prototype	O
digital	O
file-recording	O
cameras	O
,	O
including	O
both	O
the	O
Lloyd/Sasson	O
1975	O
digital	B-Device
camera	I-Device
and	O
the	O
1988	O
1-megapixel	O
monochrome	O
"	O
Electro-Optic	O
Camera	O
"	O
for	O
a	O
U.S.	O
Government	O
client	O
.	O
</s>
<s>
TI	O
helped	O
Canon	O
develop	O
the	O
CCD	B-Algorithm
sensor	I-Algorithm
for	O
the	O
prototype	O
D701	O
.	O
</s>
<s>
The	O
RC-701	O
used	O
a	O
380,000	O
-pixel	O
CCD	B-Algorithm
made	O
by	O
TI	O
,	O
and	O
was	O
priced	O
at	O
for	O
the	O
body	O
alone	O
.	O
</s>
<s>
In	O
November	O
1987	O
,	O
Minolta	O
released	O
two	O
still	O
video	O
backs	O
that	O
could	O
be	O
fitted	O
to	O
its	O
7000	B-Algorithm
and	O
9000	B-Algorithm
autofocus	O
SLRs	O
,	O
designated	O
SB-70(S )	O
and	O
SB-90(S )	O
,	O
respectively	O
.	O
</s>
<s>
At	O
the	O
1989	O
CES	O
,	O
Sony	O
's	O
Mavica	B-Algorithm
MVC-C1	O
was	O
priced	O
at	O
,	O
including	O
the	O
required	O
MAP-T1	O
playback	O
unit	O
,	O
and	O
Canon	O
's	O
RC-250	O
,	O
aka	O
Q-PIC/Ion/Xapshot	O
,	O
was	O
under	O
;	O
in	O
addition	O
,	O
the	O
1989	O
CES	O
exhibited	O
a	O
prototype	O
from	O
Sanyo	O
.	O
</s>
<s>
The	O
RC-250	O
'	O
s	O
CCD	B-Algorithm
sensor	I-Algorithm
was	O
again	O
developed	O
with	O
TI	O
.	O
</s>
<s>
However	O
,	O
the	O
increased	O
interest	O
and	O
availability	O
of	O
consumer	O
SVCs	O
was	O
paralleled	O
by	O
the	O
rise	O
of	O
still	B-Device
cameras	I-Device
recording	I-Device
digital	I-Device
files	I-Device
,	O
which	O
was	O
marked	O
by	O
rapid	O
developments	O
including	O
the	O
prototype	O
Fujix	O
DS-1P	O
,	O
announced	O
at	O
Photokina	O
'	O
88	O
and	O
equipped	O
with	O
a	O
removable	O
memory	O
card	O
developed	O
with	O
Toshiba	O
;	O
the	O
Dycam	O
Model	O
1	O
of	O
1990	O
,	O
also	O
marketed	O
as	O
the	O
Logitech	O
FotoMan	O
as	O
the	O
first	O
consumer	O
digital	B-Device
camera	I-Device
;	O
the	O
1991	O
Nikon	O
F3-based	O
Kodak	B-Device
DCS	I-Device
100	I-Device
for	O
professionals	O
;	O
and	O
the	O
Casio	O
QV-10	O
of	O
1995	O
,	O
which	O
was	O
equipped	O
with	O
a	O
color	O
LCD	O
,	O
allowing	O
users	O
to	O
review	O
and	O
delete	O
still	O
images	O
on	O
the	O
same	O
unit	O
.	O
</s>
<s>
The	O
increased	O
resolution	O
and	O
enhanced	O
capabilities	O
of	O
digital	B-Device
cameras	I-Device
soon	O
eclipsed	O
the	O
features	O
of	O
SVCs	O
;	O
in	O
a	O
1995	O
review	O
comparing	O
digital	O
and	O
still	B-Algorithm
video	I-Algorithm
cameras	I-Algorithm
,	O
MacWorld	O
concluded	O
the	O
digital	B-Device
cameras	I-Device
had	O
superior	O
resolution	O
,	O
but	O
cited	O
the	O
large	O
resolution	O
gap	O
between	O
the	O
high-end	O
digital	B-Device
cameras	I-Device
(	O
at	O
1.5MP	O
)	O
and	O
35mm	O
film	O
(	O
estimated	O
at	O
20MP	O
)	O
.	O
</s>
