Altera Video and Image Processing Suite - Manual (Page 171)

Parameter Value Description
Frame buffering mode
• No buffering
• Double buffering
• Triple buffering
with rate conversion
Specify whether to use external frame buffers.
• No buffering: data is piped directly from
input to output without using external
memory. This is possible only with the
bob method.
• Double-buffering: routes data via a pair of
buffers in external memory. This is
required by the weave and motion-
adaptive methods, and can ease
throughput issues for the bob method.
• Triple-buffering: uses three buffers in
external memory and has the advantage
over double-buffering that the Deinter‐
lacer can drop or repeat frames, to
perform simple frame rate conversion.
Output frame rate
• As input frame rate
(F0 synchronized)
• As input frame rate
(F1 synchronized)
• As input field rate
Specify whether to produce a frame out for
every field which is input, or a frame output
for every frame (pair of fields) input. Each
deinterlacing method is defined in terms of
its processing of the current field and some
number of preceding fields.
In the case where a frame is produced only
for every two input fields, the current field is
either always an F1 field or always an F0 field.
Note: NTSC video transmits 60
interlaced fields per second(30
frames per second). Selecting the
as input frame options ensures
that the output is 30 frames per
second.
Passthrough mode On or Off Turn on to propagate progressive frames
unchanged. When turned off, the progressive
frames are discarded.
Run-time control for locked
frame rate conversion
On or Off Turn on to add an Avalon-MM slave
interface that synchronizes the input and
output frame rates.
You cannot enable both run-time control
interfaces at the same time.
Note: Available only when you select
Double buffering, and Motion
Adaptive as the deinterlacing
method.
12-12 Deinterlacing Parameter Settings
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2015.05.04
Altera Corporation Deinterlacing IP Cores
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