Yakovlev S. Digital filters for the graphical information coding device

The thesis is devoted to a problem to create of structures of digital filters for graphical information coding device and a means for their research. The existing ways to design structures of digital filter and graphical information coding devices have been analysed. The necessity to use the digital filters in graphical information coding device has been grounded. The method to create the digital filter structures based on analog prototype with combination of the matrix of conductivity and the way of construction the graphical information coding device with use of frequent modulation principle are suggested. The analysis has been made and the optimum structures of digital filters have been chosen. The results of suggested decisions are confirmed by mathematical simulation in programme tools Matlab 5.3 and Matcad 7.0 and by physical simulation with use of the Assembler language.