Study of New Passive Tactilie Braille-Transmission Methods

Development of Braille-Transmission Equipment for Teletext Broadcasting

Abstract

We have been studying methods of transmitting electronic-character information into braille to facilitate access for visually or both sight and hearing impaired persons. In this study, we devised new braille-transmission methods and experimented to evaluate the intelligibility of passive reception on a limited number of display devices. The 6-digit/character method, which distribute 6 points of braille to 6 corresponding fingers and stimulates each fingertip, produced a 90 percent or higher rate of recognition for the presented braille characters. On the basis of the evaluation result, a new method for presenting sequence of braille data was devised and teletext broadcasting braille-transmission equipment was developed.