ADSP-BF561 was used to implement the embedded LCoS(Liquid Crystal on Silicon) image projection display interface. The framework of the interface was proposed

and level switch and serial-to-parallel were avoided. This paper emphasized on the controlling of the image outputs

and the processing of color conversions and trapezoid correction of image data by DSP. In color conversions

image data in YUV color space was conversed to image data in RGB color space by color conversion equations. In trapezoid correction

the obtained RGB data was calculated by trapezoid transforming after image interpolation

and made the contrast of the trapezoid image with the source image. The design was programmable

extensible

and low-powered. It was implemented in a simply way. A QVGA projecting image was obtained

and the time and space resources met the requirements.