Functional
Description
The AL250 Video Scan Doubler
(De-Interlacer) is a video conversion chip for consumer
video and multimedia applications. It converts
interlaced NTSC or PAL, ITU-R BT 601 (CCIR601) or square
pixel, YUV422 or RGB565 digital signals into computer
monitor RGB signals for direct connection to a computer
monitor or progressive scan TV. |
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| Features
- Convert interlaced YUV/RGB (NTSC/PAL) into
non-interlaced RGB format for CRT or LCD monitors
- Highly integrated design with built-in DAC,
SRAM, OSD and LUT
- Built-in on-screen-display with programmable
bitmap
- Advanced digital line interpolation with
no tearing or jagged edge artifacts
- Reduced interlace flicker
- Auto NTSC/PAL detect
- Digital video input of square pixel, ITU-R
BT 601 (CCIR 601), or user-defined format
- I2C programming interface
- Internal RGB video lookup table (LUT) to
provide gamma correction
- Overlay support for title making and complex
on-screen display
- Self-initialization without software (Plug
& Play)
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Applications
- TV Ready Multimedia Computer Monitor
- TV to PC Video Scan Converter Box
- Progressive Scan TV
- Video Game Station
- DVD Player
- Portable VCD Player
- LCD Monitor w/VGA Input
- Video Based Set-top Box
- LCD Projector
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