Abstract
Abstract The “BrailleRing” is a refreshable Braille display that allows blind people to read tactile characters on the inside of a rotating ring. Dots are not displayed by moving pins, but by fixed patterns on rotating cuboids. The concept allows for a flexible line-length as well as for a more robust and easy-to-clean device, because it needs far fewer actuators than piezo-electric Braille displays, and these actuators are mechanically isolated from the Braille cells.
Highlights
With the system called Braille, it is possible for blind people to gain literacy, do complicated math and read music notation, among many other things
Each character in Braille is represented by a pattern of up to eight tactile dots that blind readers can detect with a stroke of their fingers
Variations were later presented to participants in all user studies. – A mock-up on a rail, where a tape with Braille text runs through the lower part of the ring when moving the device
Summary
With the system called Braille, it is possible for blind people to gain literacy, do complicated math and read music notation, among many other things. They participated at several occasions: (1) Eleven people took part in a first round of separate interviews in 2017 to collect facts about their current display usage—mostly specifications about the devices they own, the contexts they use them in and their experiences with robustness. If users move their reading finger to the right or left on the inside, they only have limited freedom of movement and by moving their finger further, they will automatically push the device forward or backward, resulting in the rotation needed to display the or previous Braille characters.
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