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AL251 Datasheet(PDF) 1 Page - AverLogic Technologies Inc |
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AL251 Datasheet(HTML) 1 Page - AverLogic Technologies Inc |
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1 / 2 page  AVERLOGIC TECHNOLOGIES, INC. e-mail: sales_usa@averlogic.com URL: www.averlogic.com AVERLOGIC TECHNOLOGIES, CORP. e-mail: sales@averlogic.com.tw URL: www.averlogic.com.tw February 25, 2003 AL251 Video Scan Doubler Applications − LCD Monitor w/TV Input − LCD Projector − Video Editing Equipment Description The AL251 Video Scan Doubler (De- Interlacer) is a video conversion chip for LCD VGA display or video editing applications. It converts interlaced NTSC or PAL, ITU-R BT 601 (CCIR601) or square pixel, YUV422 or RGB565 digital data into non-interlaced analog RGB signals for direct connection to a computer monitor or progressive scan TV, or digital RGB565 /YUV422 output for LCD monitors, projectors, or other applications. • Convert interlaced digital YUV/RGB (NTSC/PAL) into non-interlaced YUV/RGB format for LCD monitors or video processing • 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 • Analog/digital non-interlaced RGB (VGA) output (Scan Doubled or De-interlaced) or digital YUV output • I 2C 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) • 3.3 or 5 volt support 8-bit DAC 8-bit DAC 8-bit DAC Video Processor and Scan Doubler R G B Timing Control I2C Circuit VCLK HREF AL251-01 Digital YUV or RGB input Mode Control Video Formatter RGB Video Lookup Tables Video Memory VIDHS VIDVS RSET VREF COMP VCLKX2 On-screen Display 16 16 Digital YUV or RGB output 2 |
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