
Philips Semiconductors
PNX15xx Series
Volume 1 of 1
Chapter 11: QVCP
PNX15XX_SER_3
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 3 — 17 March 2006
11-72
12:11
uv_gain
R/W
2
Gain Factor for UV correction
00 = factor of 0
01 = factor of 0.5
10 = factor of 1
11 = factor of 2
10
uv_pos
R/W
1
UV corrections only in positive direction
9
ratio_limit
R/W
1
Minimum denominator for UV processing
0 = denominator larger than or equal to 64
1 = denominator larger than or equal to 128
8
round
R/W
0
Round or Truncate in interpolation for Y transfer function
1 = Round
0 = Truncate
7:0
black_off
R/W
0
8-bit signed offset for black stretch value
This is the 33rd histogram variable and this is the only way to add an
offset from a Yout=Yin curve for Yin= -256+ped register. But it
affects all other 32 values too.
Offset 0x10 E348
Layer CFTR Blue
31:25
Unused
-
24
blueycomp
R/W
1
Compensate Y in order to prevent illegal colors in RGB space
1 = Y compensation on
0 = Y compensation off
23:20
bluegain
R/W
A
Strength of blue stretch effect (0..15) higher value = greater effect
19:17
bluesize
R/W
4
Blue stretch detection area (0..7) lower value = greater detection
area
16
blue_enable
R/W
0
Blue stretch functionality
1 = Enable
0 = Bypass
15:9
Unused
-
8:6
skingain
R/W
2
Strength of skin tone correction effect (0..4) higher value greater
effect
5:3
skintone
R/W
2
Direction of correction (0..4), lower value = towards “yellow” higher
value = towards “red”
2:1
skinsize
R/W
1
Skin tone detection area size (0..2) higher value = greater detection
area
0
skin_enable
R/W
0
Skin tone correction functionality
1 = Enable
0 = Bypass
Offset 0x10 E34C
Layer CFTR Green
31:15
Unused
-
14:11
greenmax
R/W
9
Maximum correction(0..15), higher value = stronger correction
allowed
10:8
greensat
R/W
4
Green detection area maximum saturation (0..7) higher value =
effect extends to higher saturations
Table 20: QVCP 1 Registers …Continued
Bit
Symbol
Acces
s
Value
Description