LA76070 查看數據表（PDF） - SANYO -> Panasonic
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LA76070 Datasheet PDF : 27 Pages
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LA76070
Parameter
[Video Block]
Overall video gain
(contrast: maximum)
Contrast adjustment
characteristics
(normal/maximum)
Contrast adjustment
characteristics
(minimum/maximum)
Symbol
Measurement
point
Input signal
Measurement procedure
Bus conditions and
input signals
CONT127 30
CONT63 30
CONT0 30
L–50
L–50
L–50
Measure the output signal 50 IRE amplitude
(CNTHB V p-p) and calculate CONT127 as
20 × log (CNTHB/0.357).
Measure the output signal 50 IRE amplitude
(CNTCB V p-p) and calculate CONT63 as
20 × log (CNTCB/CNTHB).
Measure the output signal 50 IRE amplitude
(CNTLB V p-p) and calculate CONT0 as
20 × log (CNTLB/CNTHB).
Contrast max
1111111
Contrast center
0111111
Contrast min
0000000
Video frequency characteristics
30
DC propagation
ClampG 30
Y delay
YDLY
30
Maximum black stretching gain
BKSTmax 30
Sharpness (peaking)
30
Horizontal/vertical blanking
output level
RGBBLK
30
L–0
L–100
Measure the output signal 0 IRE DC level
(BRTPL V)
Measure the output signal 0 IRE DC level
(DRVPH V) and the 100 IRE amplitude (DRVH
V p-p), and calculate ClampG as
100 × (1 + (DRVPH - BRTPL)/DRVH).
Brightness min
0000000
Contrast max
1111111
Brightness min
0000000
Contrast max
1111111
L–BK
Measure the output signal 0 IRE DC level at
point A when the black stretch function is
BKST defeat on (1)
defeated (off). Record this value as BKST1 (V).
Measure the output signal 0 IRE DC level at
point A when the black stretch is enabled (on).
Record this value as BKST2 (V).
BKST defeat off (0)
Calculate BKSTmax from the following formula.
BKSTmax = 2 × 50 × (BKST1 – BKST2)/ CNTHB
L–CW
L–CW
L–CW
L–100
Measure the output signal blanking period DC
level. Record that value as RGBBLK V.
No. 5844-19/27
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