M-sequence random number based control for pen interface using surface acoustic wave tactile display

This paper describes pen interface using surface acoustic wave tactile display. Using the display, tactile sensation like a feeling of drawing by a charcoal can be generated. Combined with a graphics tablet with an LCD, it is possible to generate both visual information and tactile sensation dynamically. To adding the reality of sensation, control referring to m-sequence random number is proposed and described in this paper. Measurement results of pen vibration during rubbing the display with the reference and those without it were compared. FFT analysis results of the pen vibration are also compared.