TDA4780 Datasheet, PDF (16/44 Pages) NXP Semiconductors – RGB video processor with automatic cut-off control and gamma adjust

Philips Semiconductors
RGB video processor with automatic
cut-off control and gamma adjust
Preliminary specification
TDA4780
handbook, full pagewidth
sandcastle pulse with vertical component
timing controlled by sandcastle pulse
R channel
G channel
B channel
LM = leakage current measurement time.
MR, MG, MB = R, G, B cut-off measurement pulses.
MT = measurement time.
DG = internal blanking.
LM
MR
LM
MG
LM
MB
MT
DG
Fig.10 Pulse diagram.
MGE881
handbook, full pagewidth
V-axis
(R − Y)
PAL
1.14 / 90˚
(G − Y)
0.698 / 236.4˚
(B − Y)
2.03 / 0˚
U-axis
(R − Y)
1.59 / 95.1˚
V-axis
NTSC-JAPAN
nominal hue = −2˚
(G − Y)
0.606 / 239.9˚
(B − Y)
2.03 / 0˚
U-axis
MGE877
1997 Feb 06
Fig.11 Demodulation axes.
16