A Study of Universal Accessibility for People in Japan with Communicative and Perceptual Disorders

The author has developed one basic research approach for universal accessibility over a period of 28 years. As reviewed in this paper, he and his co-researchers have designed several devices for universal accessibility as well as obtained many basic findings concerning human information processing. Some of the devices have been manufactured in Japan and the technologies as well as the basic findings have been applied to construct humancentred computer interfaces such as virtual reality, automatic speech recognition and speech syntheses. Moreover, these newly developed computer interface technologies have led to the improvement in the design of models for developing universal accessibility devices.