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Abstract

A control circuitry for conveying video data in a flat panel display transmits video data using reduced swing differential signals that are time-multiplexed on a data bus. Data transmission schemes are provided to reduce data transitions on the data bus. A repeat last pixel scheme is used whenever the pixel data repeat horizontally on a display. A repeat last line pixel scheme is used whenever the pixel data repeat vertically on a display. A repeat last different pixel scheme is used whenever video data comprises mainly of monochrome information. In the alternate, a dynamic color pallet is used to store a few most frequently used pixel colors. When the current pixel color matches one of the colors stored, a pixel color address is transmitted instead of the pixel data itself. The use of reduced swing differential signaling on a time-multiplexed data bus together with one or more of the data transmission schemes achieves significant reduction in power consumption and electromagnetic interference generation.

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