Dnr Threshold; Border Area; Figure 123: Sd Dnr Border Area - Analog Devices ADV8003 Hardware Manual

dnr_coring_gain_b[3:0], Encoder Map, Address 0xE4A3[3:0]
This signal is used to configure the coring gain data (in Digital Noise Reduction (DNR) mode, the values in brackets apply).
Function
dnr_coring_gain_b[3:0]
0000 
0001
0010
0011
0100
0101
0110
0111
1000
8.4.19.3.

DNR Threshold

dnr_threshold[5:0] is used to define the threshold value in the range of 0 to 63. The range is an absolute value.
dnr_threshold[5:0], Encoder Map, Address 0xE4A4[5:0]
This signal is used to configure the Digital Noise Reduction (DNR) threshold.
Function
dnr_threshold[5:0]
000000 
000001
111110
111111
8.4.19.4.

Border Area

When blk_border_2 is set to 1, the block transition area can be defined to consist of four pixels. If this bit is set to logic 0, the border
transition area consists of two pixels, where one pixel refers to two clock cycles at 27 MHz.
blk_border_2, Encoder Map, Address 0xE4A4[6]
This bit is used to select the Digital Noise Reduction (DNR) border area.
Rev. B, August 2013
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]
Description
0
1
...
62
63
720 × 485 PIXELS
(NTSC)
8 × 8 PIXEL BLOCK

Figure 123: SD DNR Border Area

TWO-PIXEL
BORDER DATA
8 × 8 PIXEL BLOCK
341
ADV8003 Hardware Manual