Refreshable Braille display device
US10276066B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Aug 31, 2016 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | Mar 25, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09B21/004
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A refreshable Braille display device comprising a rotatable shaft a plurality of pairs of polygonal discs that selectively rotate about the shaft. Each disc comprises a plurality of outer edge surfaces, each of which comprising a plurality of cell elements fixedly disposed thereon wherein, the cell elements comprise pins, depressions, or a combination of both. The cell elements of two aligned outer surfaces of a pair of discs form a character cell representative of a Braille character. An outer surface is rotatable between one readable position and a plurality of non-readable positions wherein, a Braille character is accessible when the aligned outer surfaces are in the readable position. The device further comprises a converter module for converting text to output Braille and an order module for assigning a target outer surface to each disc in accordance with the output Braille.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.