HDMI video scaling on an all-programmable SoC

Abstract

We propose a High-Definition Multimedia Interface (HDMI) video scaling system based on an all-programmable SoC, which can be used in any image processing system requiring a two-dimensional (2D) interpolation accelerator. This structure work on a platform-based SoC environment. By the AXI Video Direct Memory Access (AXI VDMA), video data are directly transferred between DDR3 memory and the built-in FPGA where the proposed buffering scheme and interpolation accelerator are implemented. We store video data in the DDR3 memory and the interpolation accelerator performs real-time video scaling. An experiment with HDMI video input from a Microsoft Windows PC and HDMI video output to another display proves the effectiveness of the real-time video scaling.