To develop computer generated holographic video(CGHV) technology utilizing the digital micromirror device(DMD),the holographic coding methods have been investigated.Basis on digital micromirror device physical microstructure,two dimensional discrete micromirror pixels,blazed diffraction gratings of rotated mirrors and its pulse width modulation working principle are discussed.The following factors have been considered,namely,digital micromirror device's resolution,mirror size,pitch,rotating angle,incident a...