Coring Gain Border; Coring Gain Data; Figure 122: Sd Dnr Offset Control - Analog Devices ADV8003 Hardware Manual

Function
dnr_en
1
0 
8.4.19.1.

Coring Gain Border

dnr_coring_gain_a[3:0] is the gain factor applied to border areas (refer to
mode, the range of gain values is 0 to -1 in decrements of 1/8. This factor is applied to the DNR filter output that lies below the set
threshold range. The result is then subtracted from the original signal.
In DNR sharpness mode, the range of gain values is 0 to 0.5 in increments of 1/16. This factor is applied to the DNR filter output that lies
above the threshold range. The result is added to the original signal.
dnr_coring_gain_a[3:0], Encoder Map, Address 0xE4A3[7:4]
This signal is used to configure the coring gain border (in Digital Noise Reduction (DNR) mode, the values in brackets apply).
Function
dnr_coring_gain_a[3:0]
0000 
0001
0010
0011
0100
0101
0110
0111
1000
8.4.19.2.

Coring Gain Data

dnr_coring_gain_b[3:0] is the gain factor applied to the luma data inside the MPEG pixel block. In DNR mode, the range of gain values is
0 to -1 in decrements of 1/8. This factor is applied to the DNR filter output that lies below the set threshold range. The result is then
subtracted from the original signal.
In DNR sharpness mode, the range of gain values is 0 to 0.5 in increments of 1/16. This factor is applied to the DNR filter output that lies
above the threshold range. The result is added to the original signal.
data gain.
Rev. B, August 2013
Description
Enabled
Disabled
Description
No gain
+1/16 [−1/8]
+2/16 [−2/8]
+3/16 [−3/8]
+4/16 [−4/8]
+5/16 [−5/8]
+6/16 [−6/8]
+7/16 [−7/8]
+8/16 [−1]
APPLY DATA
CORING GAIN
O X X X X X X O O X X X X X X O
O X X X X X X O O X X X X X X O
DNR27 TO DNR24 = 0x01 O X X X X X X O O X X X X X X O

Figure 122: SD DNR Offset Control

Figure 127 for more information on border areas). In DNR
Figure 122 explains the difference between SD DNR border gain and
APPLY BORDER
CORING GAIN
OFFSET CAUSED
BY VARIATIONS IN
INPUT TIMING
340
ADV8003 Hardware Manual