| 摘要 |
An electronic control system receiving video signals from video signal sources for visual presentation on full color and monochrome flat panel displays comprises a video input connector (10), a composite video converter (11), video input selector (12), a sync detector (13) and separator (14), A/D converters (19, 22, 23), a color-to-monochrome reduction means (21), frame buffers (20, 24, 25), a microprocessor (36), a pixel clock generator (28), a frame buffer input control (27), a timing generator (29), an image size/position control (39), a frame buffer output control (42), a power control circuit (53), and a flat panel interface module (30). Display of video signals of numerous types and formats, whether interlaced, non-interlaced, composite, or video signals with separated sync signals, is automatically accommodated. Images are both automatically, and under user control, upsized and downsized, positioned and oriented to fit the flat panel being used. Color images are automatically reduced to grey scale monochrome when a monochrome flat panel display is being used. The push-pull A/D converter circuitry for digitizing color signals is used to reduce cost while conserving power, while a further power-saving feature provides for automatic power down when video is interrupted and power up when video is reacquired.
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