Around 1990, researches on the electro-holography or the holographic video display had become very active in Japan. One of the reason might be that fine liquid crystal panels for television became commercially available. Another reason might be that the researchers were encouraged by the success of the holographic video display research at MIT. Recently, researches on holographic video display are getting very active again, though the goal is still challenging. This paper describes recent research activities on the holographic video system in Japan. It includes hologram calculations and acquisitions as well as displays.