pnx1500 NXP Semiconductors, pnx1500 Datasheet - Page 580

• Manufacturer Part Number: pnx1500
• Description: Pnx15xx Series Connected Media Processor
• Manufacturer: NXP Semiconductors

1. Introduction
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The current MBS implementation can not perform film-mode detection.
Memory-based scaling is done independent of any video clocks by reading the video
data from memory and writing the scaled pictures back to the memory. A single
scaler can therefore be used to scale more than one video stream.
The memory-based scaler can perform the following operations:
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Chapter 19: Memory Based Scaler
PNX15xx Series Data Book – Volume 1 of 1
Rev. 3 — 17 March 2006
Vertical and horizontal scaling
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De-interlacing
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Anti-flicker filtering
Conversions between 4:2:0, 4:2:2 and 4:4:4
Indexed to true color conversion
Color expansion/compression (different quantizations for color components, e.g.,
RGB565 -> RGB32)
Deplanarization/planarization
Variable color space conversion with programmable matrix coefficients (mutually
exclusive with horizontal scaling)
Color-key and alpha processing
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Linear and non-linear aspect-ratio conversion
Simple median
Majority-selection (median filtering with previous field, spatial temporal
average of 2 fields, same position from next or previous field depending on
whether three or two field majority selection) [Note: majority selection is done
on luma only]
Field insertion
straightforward but doable with programming tricks
Edge-Dependent De-interlacing (EDDI) --- a post-processing step done only
on luma
Conversion between color-key and alpha
Alpha scaling
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and line doubling ( i.e. , repeating the same line twice). ... not
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