Scaler Interpolation Mode; Vim Miscellaneous Control; Figure 63: Vim Scaler Dimensions - Analog Devices ADV8003 Hardware Manual

Image before Image before
Scaler Scaler
VSP2D_VIM_CROP_HEIGHT SVSP_VIM_CROP_HEIGHT
SVSP_VIM_CROP_WIDTH

3.3.2.3. Scaler Interpolation Mode

This section describes the method for scaling the input video data. The purpose of the scaler is to allow different input formats to be
displayed on a screen with a fixed resolution. This can allow lower resolution video, for example, 480p, to be upscaled to a high definition
format such as 1080p. This can improve the overall quality of a video signal when displayed on a high definition television. The four
options of video scaling are listed below and are chosen using svsp_vim_scal_type[1:0].
Refer to Section 3 for more information on the types of scaler
svsp_vim_scal_type[1:0], Secondary VSP Map, Address 0xE646[7:6]
This signal is used to set the VIM scaling algorithm. In most cases, the scaler type should be left at the default setting.
Function
svsp_vim_scal_type[1:0
]
00 
01
10
11

3.3.2.4. VIM Miscellaneous Control

The following registers are used in the control of the VIM scaling function and should be tailored according to user requirements.
Anti-alias filters are provided to improve the performance of the SVSP downscaling and can be enabled using
svsp_vim_scal_anti_alias_h_en
svsp_vim_scal_anti_alias_h_en, Secondary VSP Map, Address 0xE650[5]
This bit is used to enable the anti-aliasing filter for horizontal direction.
Function
svsp_vim_scal_anti_alia
s_h_en
0
1 
svsp_vim_scal_anti_alias_v_en, Secondary VSP Map, Address 0xE650[6]
This bit is used to enable anti-aliasing filter for vertical direction.
Rev. B, August 2013
Scaler in Scaler in
VIM VIM

Figure 63: VIM Scaler Dimensions

Description
Proprietary ADI Algorithm
Sharp
Smooth
Bilinear
and svsp_vim_scal_anti_alias_v_en.
Description
Disable
Enable
Scaled Image Scaled Image
SVSP_VIM_SCAL_OUT_WIDTH
algorithm.
192
ADV8003 Hardware Manual
SVSP_VIM_SCAL_OUT_HEIGHT VSP2D_VIM_SCAL_OUT_HEIGHT