IPSR-VIDEO Altera, IPSR-VIDEO Datasheet - Page 120

• Manufacturer Part Number: IPSR-VIDEO
• Description: RENEWAL Of IPS-VIDEO
• Manufacturer: Altera
• Series: IP Suitesr

Specifications of IPSR-VIDEO

• Software Application: IP CORE, SUITES
• Supported Families: Arria GX, Cyclone II, HardCopy II, Stratix II
• Features: Common Avalon Streaming (Avalon-St) Interface And Avalon-St Video Protocol
• Core Architecture: FPGA
• Core Sub-architecture: Arria, Cyclone, Stratix
• Rohs Compliant: NA
• Lead Free Status / RoHS Status: na

5–40
Video and Image Processing Suite User Guide
Deinterlacing Methods
1
Figure 5–21
with frame buffering.
Figure 5–21. Deinterlacer Block Diagram with Buffering in External RAM
Note to
(1) There can be one or two Avalon-MM masters connected to the Memory Reader.
The Deinterlacer MegaCore function supports four deinterlacing methods:
■
■
■
■
The Deinterlacer does not support interlaced streams where F0 fields are one line
higher than F1 fields in most of its parameterizations. (Bob with one output frame for
each input frame is the only exception.) Altera recommends using the Clipper
MegaCore function to feed the Deinterlacer with an interlaced video stream that it can
support.
Bob with Scanline Duplication
The bob with scanline duplication algorithm is the simplest and cheapest in terms of
logic. Output frames are produced by simply repeating every line in the current field
twice. The function uses only the current field, therefore if the output frame rate is the
same as the input frame rate, the function discards half of the input fields.
Bob with Scanline Interpolation
The bob with scanline interpolation algorithm has a slightly higher logic cost than bob
with scanline duplication but offers significantly better quality.
Bob with scanline duplication
Bob with scanline interpolation
Weave
Motion-adaptive
Avalon-ST Input
(din)
Figure
Avalon-MM Master
(write_master)
5–21:
shows a simple block diagram of the Deinterlacer MegaCore function
Memory
Writer
Arbitration Logic
DDR2
Memory
Reader
Avalon-MM Master
(read_master)
Deinterlacing
Algorithm
Chapter 5: Functional Descriptions
January 2011 Altera Corporation
Avalon-ST Output
(dout)
Deinterlacer