Navigation aid for refreshable braille display and other text products for the vision impaired
US6987467B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2002 |
| Grant date | Jan 17, 2006 |
| Priority date | — |
| Expiry date | Jun 16, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2019/006
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A navigation aid for a refreshable Braille display and similar products for the visually impaired. A navigation wheel is located adjacent at least one end of the refreshable Braille display. Rotation of the wheel by an increment moves the displayed text forward or backward by a predetermined increment, such as by one word, or one line or one paragraph. In a preferred embodiment, the function performed by rotating the wheel can be changed by depressing the wheel. A separate navigation wheel may be located at opposite ends of the refreshable Braille display and the two navigation wheels may perform the same or different functions when rotated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.