Abstract: An image compression device includes a floating-point texture-loading unit, a shader, a RGB to YCrCb compressor, and a parameter adjusting unit. The floating-point texture-loading unit receives raw image data that includes N number of RGB pixels. The shader receives the raw image data and shades the N number of RGB pixels. The RGB to YCrCb compressor receives the shaded image data and calculates the brightness/chroma value of each of the RGB pixels, wherein the chroma value of the RGB pixel having the smallest brightness value among all the RGB pixels is selected as a common chroma value for all the RGB pixels. The parameter adjusting unit receives and adjusts N number of brightness values of the RGB pixels and the common chroma value and stores them in a form of compressed image data into a memory.

Abstract: An expanding slot adaptor of an expanding card for receiving and electrically connected to the expanding card. One end of the expanding card is installed with a first shoulder and another end is installed with a second shoulder. The sliding slot adaptor comprises the following elements. An adaptor body has an expanding card inserting hole and a plurality of terminal holes. A sliding element is arranged on the adaptor body. The sliding element has buckles corresponding to a first and a second shoulders, respectively, so that the expanding card inserted into the adaptor body is firmly secured to the sliding element. One end of the restoring means is combined to the sliding element, and thus the sliding element is restored to an original position by the restoring means. A sliding means is formed upon the sliding element of the adaptor body.