LA76070 查看數據表（PDF） - SANYO -> Panasonic
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LA76070 Datasheet PDF : 27 Pages
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Parameter
[OSD Block]
OSD fast switch threshold
Red RGB output level
Green RGB output level
Blue RGB output level
Analog OSD R output level
Gain matching
Linearity
Analog OSD G output level
Gain matching
Linearity
Analog OSD B output level
Gain matching
Linearity
LA76070
Symbol
Measurement
point
Input signal
Measurement procedure
Bus conditions and
input signals
FSTH
30
ROSDH
28
GOSDH
29
BOSDH
30
28
RRGB
LRRGB
29
GRGB
LGRGB
30
BRGB
LBRGB
L–0
O–2
L–50
L–0
O–2
L–50
L–0
O–2
L–50
L–0
O–2
L–0
O–1
L–0
O–1
L–0
O–1
Apply a voltage to pin 36 and determine the pin
36 voltage when the output signal switches to Pin 35: Apply O-2
the OSD signal
Measure the output signal 50 IRE amplitude
(CNTCR V p-p)
Measure the OSD output amplitude
(OSDHR V p-p)
Pin 36: 2.0 V
Pin 33: Apply O-2
Calculate ROSDH as 50 × (OSDHR/CNTCR)
Measure the output signal 50 IRE amplitude
(CNTCG V p-p)
Measure the OSD output amplitude
(OSDHG V p-p)
Pin 36: 2.0 V
Pin 34: Apply O-2
Calculate GOSDH as 50 × (OSDHG/CNTCG)
Measure the output signal 50 IRE amplitude
(CNTCB V p-p)
Measure the OSD output amplitude
(OSDHB V p-p)
Pin 36: 2.0 V
Pin 35: Apply O-2
Calculate BOSDH as 50 × (OSDHB/CNTCB)
Measure the amplitude of points A (the 0.35 V
section in the input signal O-1) and B (the 0.7 V
section in the input signal O-1) in the output
Pin 36: 2.0 V
signal and record those values as RGBLR and Pin 33: Apply O-1
RGBHR V p-p, respectively
Calculate RRGB as RGBLR/CNTCR
Calculate LRRGB as 100 × (RGBLR/RGBHR)
Measure the amplitude of points A (the 0.35 V
section in the input signal O-1) and B (the 0.7 V
section in the input signal O-1) in the output
Pin 36: 2.0 V
signal and record those values as RGBLG and Pin 34: Apply O-1
RGBHG V p-p, respectively
Calculate GRGB as RGBLG/CNTCG
Calculate LGRGB as 100 × (RGBLG/RGBHG)
Measure the amplitude of points A (the 0.35 V
section in the input signal O-1) and B (the 0.7 V
section in the input signal O-1) in the output
Pin 36: 2.0 V
signal and record those values as RGBLB and Pin 35: Apply O-1
RGBHB V p-p, respectively
Calculate BRGB as RGBLB/CNTCB
Calculate LBRGB as 100 × (RGBLB/RGBHB)
Parameter
Symbol
[RGB Output Block] (Cutoff and Drive Blocks)
Brightness control (normal)
(max)
BRT63
BRT127
(min)
BRT0
Measurement
point
28
29
30
30
Input signal
Measurement procedure
Bus conditions and
input signals
Measure the output signal 0 IRE DC levels for
the R output (28), G output (29), and B output Contrast max
(30). Record these values as BRTPCR,
L–0
BRTPCG, and BRTPCB V, respectively.
1111111
Calculate BRT63 as
(BRTPCR + BRTPCG + BRTPCB)/3
Measure the output signal 0 IRE DC levels for Brightness max
the B output (30). Record this value as BRTPHB. 1111111
Calculate BRT127 as
50 × (BRTPHB – BRTPCB)/CNTHB
Measure the output signal 0 IRE DC levels for Brightness min
the B output (30). Record this value as BRTPLB. 0000000
Calculate BRT0 as
50 × (BRTPLB – BRTPCB)/CNTHB
No. 5844-20/27
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