Adjustable window-scaling algorithm and its hardware implementation

This paper presents a novel window-scaling algorithm for application of flat panel display. It is the improved version of normal window-scaling. Features of the proposed algorithm include: 1. Display image can take on various sharpness effect as the size of the filtering window is modified. The resulting scaling effect could be general window-scaling interpolation, bilinear interpolation, quasi-nearest neighboring interpolation and any mode whose effects intervene between those previously mentioned. In this way, the presented algorithm will achieve various levels of image sharpness. 2. Within the limitation of system clock frequency, the scaling method could support any resolution of target display. After introduction, effects of the various scaling algorithms are compared and analyzed. In addition, we also present the general hardware structure of the scaling method and implement it on an FPGA display platform. Experimental results have indicated the feasibility of the proposed method.