Panasonic AG-5700 - VTR Status Reading

@ Reading various statuses
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Description
of
operation
Personal
computer
Reply
data sent
asin
aa
Be
oh
end
data
-
back
from.
VTR
«|
~|
eommand
P P
send
data
back
from
VTR
Qos
This
command
inquires
of
the
processing
state
of
the
[STX}QOS[ETX]
[sTxJOPsSOIDEB
QOP
This
command
inquires
of
the
operation
mode
of
the
(OPERA-
VTR.
The
VTR
transmits
the
internal
processing
state
BCGOBRM(ETX]
(OPERA-
|
VTR.
The VTR
returns
the
following
code
by
means
{STXIQOP[ETX}
|
[STXIOOOETx)
TION
in the
form
of
a
bit
map,
as
shown
in
the
following
TION
of
the
QOP
code.
STATUS)
table.
The
communications
format
divides
the
data
of
2)
——
DATA
MODE)
TABLE
1
into
the
upper
four
bits
and
the
lower
four
ADRSOH
bits,
enabling
the
data
to
be
returned
in
the
sequence
C)
~——
DATA
Operation
mode
of
VTR
Code
Operation
mode
of
VTR
Code
upper
data
of
ADRS
0,
lower
data
of
ADRS
0,
upper
ADRSOL
1
data
of
ADRS
1,
lower
data
of
ADRS
1,
...,
after
[3
—-—
DATA
POWER
OFF
POF
CUE OSF
[STX]
OPS,
as
indicated
by
the
following
data.
Four
ADRS1H
STOP
osP
REV
OSR
bits
of
this
data
can
be
expressed
in
hexadecimal
C]
——
DATA
see
ao
baie
PAUSE
a
form
(0,
1,
2,
...
E,
F),
converted
into
ASCII
code,
and
ADRS1L
FAST
FORWARD
OFF
PLAY
TO
FRAME
SPT
returned.
]
DATA
be
RECORD
ORC
INSERT
VIDEO
TO
FRAME
EIT
Example:
a
DATA
REC
PAUSE
ORP
INSERT
AUDIO
TO
FRAME
EAT
Bit
map
ADRS2L
AUDIO
DUBBING
EAD
INSERT
AUDIO
&
VIDEO
TO
FRAME
EVT
a
DATA
A-DUB
PAUSE
EAP
COUNTER
CALIBRATE
CCL
fol1]o
i
0
il
1
|
o{1]o
oneal
PLAY
PAUSE
OPP
PLAY
OPL
Nez
<
7
rT
DATA
INSERT
EIN
REVERSE
PLAY
OPR
st
—~Y
ADRES:
INSERT
PAUSE
EIP
x2
PLAY
op2
;
AUDIO
&
VIDEO
INSERT
EV!
|
REVERSE
x2
PLAY
OMe
oe
2
eI
raae
AUDIO
&
VIDEO
INSERT
PAUSE
|
EvP
|
DIRECT
SEARCH
ort
|
|
ei
rere
ort
ADRSAL
ASCII
code
34H
41H
™
Precautions
for
executing
a
QOP
command
*
Any
command
other
tnan
the
SMC,
SMF,
QOP,
QOS,
QCD,
QRV,
QID,
CRT
or
RCK
command
causes
the
mode
of
the
VTR
to
change.
If
QOP
is
executed
immediately
after
a
command
is
sent,
processing
inside
the
VTR
will
not
end
completely,
hence
the
previous
mode
will
be
returned
from
the
VTR.
To
prevent
this,
wait
for
at
least
the
TABLE
1
INTERNAL
PROCESSING
DATA
;
time
necessary
for
the
mode
to
change,
that
is,
about
300
msec.,
before
sending
the
QOP
command.
(inscription
method
1/0)
MW
EVT,
EAT,
EIT,
SPT,
SCS
or
SCP
is
sent,
the
VTR
will
perform
processing
according
to
the
particular
command
that
was
sent.
If
EVT,
EAT,
EIT
or
SPT
was
sent,
the
VTR
will
finally
go
into
the
PLAY
PAUSE
mode
at
the
specified
counter
position.
If
SCS
or
SCP
was
sent,
the
VTR
will
go
into
the
SLOW
PAUSE
mode.
This
process
is shown
in the
figure
below.
[>
HO
Processing
|
Processing
@
Return
data
sent
from
the
VTR
in
response
to
a
QOP
command
interruption
|
continue
Crt
Starting
point
End
point
REC
CASSETTE
VTR
STATUS
sae
a
INHIBIT IN
is
TAB
{
EVT
——.
EIN
—
OPP
0
0
0
0
0
0
|
0
0
EAT
+
EAD
“OPP
|
|
|
|
k
EIT
—
EV!
~
OPP
0
Indetermi-
}
Indetermi-
|
Indetermi-
|
0
0
|
0
0
SPT
——!
OPL
+
OPP
nate
_|
nate
nate
|
SCS
:
OSL
——!
OLP
Processing
SCP
«
OSL
—
OLP
interruption:
Means
that
processing
of
the
EVT, EAT,
EIT,
SPT,
SCS,
SCP,
OSR,
OSF
or
CCL
command
;
:
{continue
command)
is
interrupted
for
some
reason
or
other.
When
processing
is
interrupted,
the
bit
becomes
“1”,
and
is
held
at
“1”.
If
the
above
continue
command
is
sent
once
again,
this
f :
;
flag
will
be
cleared.
fT
=
Pi
i
ti
flag=0
‘
Processing
continue
flag=1
rocessing
continue
fiag:
Processing
continue:
Means
that
processing
of
the
EVT, EAT,
E!T,
SPT,
SCS,
SCP,
OSR,
OSF
or
CCL
command
QOS
commands
are
often
used
to
ask
the
VTR
regarding
the
situation
of
Processing
using
these
commands.
For
Seselind
ipalonaney
Wieierugad
fa
miles
Noaed
|
is
taking
place,
the
bit
is
“1”.
When
this
;
timi
:
A
F
‘
:
,
the
|
f
iS
reason,
the
timing
between
the
commands
and
processing
continue
flag
is
also
shown
in
the
above
table
REC
INHIBIT
TAB:
If
the
tab
on
the
cassette
is
broken,
the
bit
becomes
“1”.
CASSETTE
IN:
If
the
tape
is inserted,
the
bit
becomes
“1”.
VW:
Means
that
the
VTR
has
switched
over
to
the
playback
screen.
While
the
Playback
screen
appears, the bit is “1”.
VTR STATUS: Refer to the following table on the next page.