Figure 40: Core Threshold In Horizontal Peaking - Analog Devices ADV7850 Hardware Manual

sdp_h_pk_en, Addr 90 (SDP), Address 0x0E[2]
This control is used to enable the horizontal peaking filter. This is a universal peaking control applied after 2D/3D mixing. It is applied
whether or not 3D has been enabled.
Function
sdp_h_pk_en
1
0 
sdp_y_2d_pk_en, Addr 90 (SDP), Address 0x0E[4]
This control is used to enable the horizontal peaking filter on the 2D combed output. This peaking filter is applied to the 2D portion of
the image before it is mixed with the 3D. It is important to note that it will always be applied to the 2D portion regardless of whether or
not 3D comb is enabled. The purpose of this control is that where 3D comb is enabled, 2D peaking reduces the sharpness/resolution
difference perceived in areas where motion occurs. 3D areas are always very sharp due to temporal comb; 2D areas need to be peaked to
compensate for softness of 2D/1D separation.
Function
sdp_y_2d_pk_en
1 
0
sdp_h_pk_inv, Addr 90 (SDP), Address 0x22[7]
This control is used to enable an inverse horizontal peaking filter operation.
Function
sdp_h_pk_inv
1
0 
sdp_h_pk_band[1:0], Addr 90 (SDP), Address 0x24[1:0]
This control is used to set a horizontal peaking filter band.
Rev. A May 2012
Enhancing Output
Core
Threshold

Figure 40: Core Threshold in Horizontal Peaking

Description
Enable horizontal peaking
Disable horizontal peaking
Description
Enable horizontal peaking
Disable horizontal peaking
Description
Inverse peaking (attenuate HF)
Normal (gain HF)
Filtered
Input
Core
Threshold
116
ADV7850