VX1828B
Preliminary Datasheet
Video Processor for Middle Size LCD Panel
P.15/P.64
V1.0 050420
5.2 POWER-DOWN OPTION
In CCIR input mode, the VX1828B provides the option to power down the line-lock sampling and
demodulation circuits.
5.3 MODE DETECTION
Automatic video mode detection is built in, discriminating between NTSC, PAL-M, PAL-Nc and other
PAL formats. Manual override of automatic mode detection is available that is controlled by the ML525
(NTSC and PALM) and MVSTD (NTSC and other PAL) registers.
Table 5.2 Manual Mode Settings
ML525 MVSTD
Mode
0
0
PAL (Combination N)
0
1
PAL (B,D,G,H,I,N)
1 0
PAL
(M)
1
1
NTSC
5.4 COLOR-TRANSIENT IMPROVEMENT (CTI)
The color-transient improvement (CTI) engine in VX1828B works adaptively to sharpen the transition
of chrominance edges to perform sharp and keen edges for every objects and overall clearer video to
the viewers.
5.5 LUMA/CHROMA ADJUSTMENT
Contrast is adjusted by register CONTRAST. This provides a range of gain from zero up to 255/128 -
almost 2X. A value of CONTRAST = 128 provides a gain of 1.
Brightness is adjusted by register BRIGHTNESS. This provides an adjustment of +127 to -128 to luma
which is clipped if necessary to achieve the required range of 64 to 940.
Hue is adjusted by register HUE. The value of HUE is added as a color phase adjustment.
Saturation is adjusted by register SATURATION. The color components are multiplied by
