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Plasma TV Service Manual
14/03/2005
The PW1231 Video SignalProcessor combines many functions into a single device, including memory
controller, auto-configuration, and others. This high level of integration enables simple, flexible, cost-
effective solutions featuring fewer required components.
12.26.2. Features
Built-In Memory Controller
Motion-Adaptive Deinterlace Processor
Intelligent Edge Deinterlacing
Digital Color/Luminance Transient Improvement (DCTI/DLTI)
Interlaced Video Input Options, including NTSC and PAL
Independent horizontal and vertical scaling
Copy Protection
Two-Wire Serial Interface
12.26.3. Applications
For use with Digital Displays
Flat-Panel (LCD, DLP) TVs
Rear Projection TVs
Plasma Displays
LCD Multimedia Monitors
Multimedia Projectors
12.27. PW181
12.27.1. General Description
The PW181 ImageProcessor is a highly integrated
system-on-a-chip
that interfaces computer
graphics and video inputs in virtually any format to a fixed-frequency flat panel display.
Computer and video images from NTSC/PAL to WUXGA at virtually any refresh rate can be resized to
fit on a fixed-frequency target display device with any resolution up to WUXGA. Video data from 4:3
aspect ratio NTSC or PAL and 16:9 aspect ratio HDTV or SDTV is supported. Multi-region, nonlinear
scaling allows these inputs to be resized optimally for the native resolution of the display.
Advanced scaling techniques are supported, such as format conversion using multiple programmable
regions. Three independent image scalers coupled with frame locking circuitry and dual programmable
color lookup tables create sharp images in multiple windows, without user intervention.
Embedded SDRAM frame buffers and memory controllers perform frame rate conversion and
enhanced video processing completely on-chip. A separate memory is dedicated to storage of on-
screen display images and CPU general purpose use.
Advanced video processing techniques are supported using the internal frame buffer, including motion
adaptive, temporal deinterlacing with film mode detection. When used in combination with the new
third-generation scaler, this advanced video processing technology delivers the highest quality video for
advanced displays.
Both input ports support integrated DVI 1.0 content protection using standard DVI receivers.
A new advanced OSD Generator with more colors and larger sizes supports more demanding OSD
applications, such as on-screen programming guides. When coupled with the new, faster, integrated
microprocessor, this OSD Generator supports advanced OSD animation techniques.
Programmable features include the user interface, custom start-up screen, all automatic imaging
features, and special screen effects.
Summary of Contents for HPT-4205
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