An implementation on FPGA for a time base corrector

Abstract

The main motivation of this work arose while working on video restoration with old and valuable playback systems but with misalignment between record and playback heads. Brand new systems include systems like the one shown here. This solution aims to solve in a practical and cheap way problems in old but still usable VCR systems to be used as a source for digital restoration. Hereafter an implementation over FPGA of a well documented solution for the digital time base distortion that usually affects magnetic tape recorders for audio and video is presented. A brief explanation about the blocks involved is given as well as a further discussion about the ideas considered to implement the overall design.