An FPGA Based Color Bar Signal Generator for PAL Standard

Abstract

Color bar signal generator is one of the most important measurements for PAL TV applications. However, its use in resource constrained applications such as color TV video adjustment is limited because of the high architecture complexity involved. Due to the broad range of applications presently offered by FPGA (filed programmable gate array), their use has become increasingly widespread in different areas and sectors. In this paper, we present the design and implementation of a color bar signal generator based on FPGA and MC1377 with a high performance and low system complexity. The FPGA technology proved to be a proper platform to meet these two contrasting requirements. The signal structure, generation principle, and FPGA implementation of composite PAL synchronize signal and RGB color signal are described. The interface circuits, hardware and software of the system are introduced. The software is simulated using MAXplusII platform. Simulation results indicate the effectiveness and stability of the signal generator.