User guide

15–10 Chapter 15: Deinterlacer MegaCore Function
Parameter Settings
Video and Image Processing Suite January 2013 Altera Corporation
User Guide
The latency is measured with the assumption that the MegaCore function is not being
stalled by other functions on the data path (the output ready signal is high).
1 The latency associated with the initial buffering phase, when a MegaCore function
first receives video data, is not included.
Parameter Settings
Table 15–3 lists the Deinterlacer MegaCore function parameters.
Table 15–2. Deinterlacer Latency
Mode Latency
Method: Bob
Frame buffering: None
O (cycles)
(1)
Method: Motion-adaptive or Weave
Frame buffering: Double or triple buffering with rate conversion
Output frame rate: As input frame rate
1 frame +O (lines)
(1)
Method: Motion-adaptive or Weave
Frame buffering: Double or triple buffering with rate conversion
Output frame rate: As input field rate
1 field +O (lines)
(1)
Method: All
Frame buffering: Double or triple buffering with rate conversion
Passthrough mode (propagate progressive frames unchanged): On.
1 frame +O (lines)
(1)
Note to Table 15–2:
(1) O refers to a small number of clock cycles, and is not of zero value.
Table 15–3. Deinterlacer Parameter Settings (Part 1 of 3)
Parameter Value Description
Maximum image width 32–2600, Default = 640
Choose the maximum frame width in pixels. The maximum frame
width is the default width at start-up.
Maximum image
height
(7)
32–2600, Default = 480
Choose the maximum progressive frame height in pixels. The
maximum frame height is the default progressive height at start-
up.
Bits per pixel per color
plane
4–20, Default = 8 Choose the number of bits per pixel (per color plane).
Number of color planes
in sequence
1–3
Choose the number of color planes that are sent in sequence over
one data connection. For example, a value of 3 for R'G'B' R'G'B'
R'G'B'.
Number of color planes
in parallel
1–3 Choose the number of color planes in parallel.
Default initial field F0, F1
Choose a default type for the initial field. The default value is not
used if the first field is preceded by an Avalon-ST Control packet.
Deinterlacing
Method
(1) (8 )
Bob - Scanline Duplication,
Bob - Scanline Interpolation,
Weave, Motion Adaptive
For more information, refer to “Deinterlacing Methods” on
page 15–2.