Display Modes and Vertical Filtering
9-17
The following display modes are provided for vertically interpolating
SIF resolution images to full resolution:
Display Mode 0 - Progressive Luma/Chroma Line and Field
Repeat.
In this display mode, the luma and chroma data remains
unfiltered. The luma data is treated as progressive; each line of luma
is displayed in both field times. The chroma data is both line and field
repeated. Each line of chroma is displayed twice in both field times
to achieve full-resolution 4:2:2.
Display Mode 1 - Progressive Luma Repositioning/Chroma Line
and Field Repeat.
The luma data is treated as a progressive frame
and is vertically filtered using a bilinear interpolation filter to improve
luma positioning. The chroma data is both line and field repeated as
in mode 0
.
Display Mode 2 - Progressive Luma/Chroma Field Repeat
Repositioning.
The luma data remains unfiltered and is treated as
a progressive frame. The chroma data is field repeated but filtered
using bilinear interpolation to improve chroma positioning.
Display Mode 9 - Progressive Luma Repositioning/Chroma Field
Repeat Repositioning.
This display mode combines the luma
component of mode 1 and the chroma component of mode 2 to
achieve improved luma and chroma positioning. It is best suited for
frame based SIF images such as in MPEG-1.
Table 9.5
Display Mode Selection Table
Parameter
Display Mode [3:0]
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x8
0x9
0xA
0xB
Field Structure Picture
x
x
x
x
x
Frame Structure Picture
x
x
x
x
x
x
x
x
x
x
x
x
16:9 Aspect Ratio
x
x
4:3 Aspect Ratio
x
x
x
x
x
x
x
x
x
x
SIF Resolution
(240/288 lines)
x
x
x
x
x
x
Full Resolution
(480/576 lines)
x
x
x
x
x
x
RMM
x
x
x
x
x
x
x