
GUIDE TO INSTALLATION AND OPERATION
XVP-801i |
19
Horizontal (µs):
The total processing delay of the card is on a frame boundary. With this adjustment, a value
ranging from
0
to
63.46
µs for 525-line operation and from
0
to
64.00
µs for 625-line operation, compared to
the reference or the frame boundary, may be set.
HD/SD Additional Frame Delay
: This parameter affects the overall processing delay of the card. It affects
both the HD and SD output by adding supplemental frame delay to the current processing delay. Without a
reference, the normal processing delay is 1 frame. This parameter will add a delay ranging from
1
to
3
frames to the current processing delay. With a reference, an additional delay is also added, but compared to
the reference.
The
Advanced
tab
The
Advanced
tab provides controls over the type and level of detail enhancement that will be performed
when upconverting from SD to HD.
Figure 3.6
HD (left) and SD (right) Video Output group – Advanced tab
Image Processing
sub-section, HD ouput
MPEG Preprocessor Mode:
This control changes the functionality of the detail enhancer. When MPEG
preprocessor is activated (‘
ON’
), the adaptive detail enhancer will use a psycho-visual model to increase the
level of details and the sharpness of edges without adding high frequency content that may be difficult to
encode at a lower bit rate on a downstream MPEG encoder.
When the MPEG preprocessor is deactivated (
OFF
), the adaptive detail enhancer will increase the details
and the sharpness of edges without causing ringing on the HD output. In this mode (‘
OFF’
), high frequency
content is added to the HD video output to improve graphic contents and characters. This setting is very
useful for upconverted material in character generation (CG) applications.
Detail Enhancer:
Enhances the perceived sharpness of fine detail and edges. A single control adjusts both
Horizontal and Vertical detail enhancement: a slider and a data reporting/entry box allow the user to select a
value ranging from
0
(no enhancement) to
7
(maximum enhancement). The default value varies according to
the processing mode: 4 for SD to HD mode, 2 for HD to SD mode and 0 for HD to HD mode.