Optimize the Graphics Update Rate on an OSD Video Graphics Generator

Abstract: In any on-screen video display system or character generator, it is desirable to provide smooth transitions when changing the displayed information. Applications which display the time and date need to be updated between frames, for an unambiguous record. The MAX4455 arbitrary graphics on-screen display generator is capable of achieving these goals but designers need to account for the transfer of large amounts of data that can occur when programming many pixels. This article offers ways to make sure that your MAX4455-based OSD system will have the optimum graphics update rate.
Maxim > App Notes > A/D and D/A Conversion/Sampling Circuits Video Circuits
Keywords: on-screen display, OSD, display generator, video generator, NTSC, PAL, PAL video, graphics update rate Sep 22, 2003

APPLICATION NOTE 2156
Optimize the Graphics Update Rate on an OSD Video Graphics
Generator


Abstract:In any on-screen video display system or character generator, it is desirable to provide smooth transitions when
changing the displayed information. Applications which display the time and date need to be updated between frames, for an
unambiguous record. The MAX4455 arbitrary graphics on-screen display generator is capable of achieving these goals but
designers need to account for the transfer of large amounts of data that can occur when programming many pixels. This article
offer