Abstract
This paper deals with vibrotactile stimulations that are suitable for a reading aid for the blind.
Based on the results obtained from the experiment of recognition time difference and two-point threshold, a vibrotactile stimulator for a blind was proposed. The vibration pattern was produced by a 4×4 array of small vibrator reeds with 200Hz and the entire array fit on a single finger. The new vibrator's power consumption is shown to be lower than one fifth of that of a conventional vibrator.
After a 30k40 minute training time, the rate of correct response was 100% in the articulation test for the characters/_??_/, /_??_/, /_??_/, /_??_/and 70% for the numbers /1/, /2/, /4/, /7/
