Portable reading device for the blind

摘要: A portable reading device for the blind consisting of a miniature housing (2) attached to sleeve be fitted over tip user's index finger like thimble. The includes an optical sensor array (5) and electromagnetic unit displaying one printed character at time in Braille on tactile surface as soon passes character. contains six electromagnets (7) reproducing characters, two further indicating incorrect tracking user. latter are activated when moves too far up or down it runs along line text.