參數(shù)資料
型號： TA1316AN
廠商： Toshiba Corporation
英文描述： YCbCr/YPbPr Signal and Sync Processor for Digital TV, Progressive Scan TV and Double Scan TV
中文描述： YCbCr /色差信號處理器和同步數(shù)字電視，逐行掃描電視和雙掃描電視
文件頁數(shù)： 60/115頁
文件大小： 1399K
代理商： TA1316AN
TA1316AN
2002-10-04
60
Test Conditions
SW mode
Note No.
Parameter
SW1
SW2
SW3
SW56
Test Method (test conditions: V
CC
= 9 V/2 V, Ta
=
25°
±
3°C)
P08
Dynamic Y
γ
correction point
A
B
A
OPEN (1)
Connect external power supply (PS1) to pin 3 and (PS2) to TP1. Set PS2 to 0 V.
(2) Set dynamic Y
γ
point switch (DYNC
γ
-POINT) to 19 IRE (00), dynamic Y
γ
gain VS dark area (DYNC
γ
GAIN
VS DARK AREA) to off (000) and dynamic Y
γ
dark area gain to off (00).
(3) When PS1 is increased from V
3
to V
3
+
0.7 V, set V
3
to 0 V and plot voltage change in pin 56. (V
3
is pin
voltage of pin 3.)
(4) Set DYNC
γ
GAIN VS DARK AREA to maximum (111), static Y
γ
dark area gain (STATIC
γ
-GAIN) to maximum
(11) and PS2 to 1 V.
(5) As in step (3) above, increase PS1 from V
3
to V
3
+
0.7 V and plot pin 56 voltage change.
(6) Set DYNC
γ
-POINT to 21 IRE (01), 25 IRE (10) and 30 IRE (11), increase PS1 from V
3
to V
3
+
0.7 V and plot
pin 56 voltage change.
(7) Determine dynamic Y
γ
point when DYNC
γ
-POINT is set to 19 IRE (00) as V
DGP00
using the graph below.
Also determine dynamic Y
γ
point when DYNC
γ
-POINT is set to 21 IRE (01) as V
DGP01
; to 25 IRE (10) as
V
DGP10
; to 30 IRE (10) as V
DGP11
.
(8) Using V
DGP01
, V
DGP10
, and V
DGP11
thus determined, calculate P
DGP00
, P
DGP01
, P
DGP10
and P
DGP11
using the following formulae.
PDGP
00
=
(V
DGP00
/0.7)
×
100
PDGP
01
=
(V
DGP01
/0.7)
×
100
PDGP
10
=
(V
DGP10
/0.7)
×
100
PDGP
11
=
(V
DGP11
/0.7)
×
100
PDGPA
=
PDGP
01
PDGP
00
PDGPB
=
PDGP
10
PDGP
00
PDGPC
=
PDGP
11
PDGP
00
OFF
ON
Pin 56 voltage [V]
Pin 3 voltage
VDGP
***
100 IRE
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