Display providing reversible contrasting indicia
US5710545A · kind A · utility
31Cited by
4References
29Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 10, 1995 |
| Grant date | Jan 20, 1998 |
| Priority date | — |
| Expiry date | Oct 10, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/3833
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A display (100) provides reversible contrasting indicia (112, 114) in order to accommodate an increased number of easily distinguishable indicia on the display. The display provides a first contrast mode (200) in which one set of indicia (112) become visually more prominent than another set (114) and a second contrast mode (300) in which the contrast of the first contrast mode is reversed. Selecting between the first and second contrast modes (200, 300) is controlled by backlighting of the display (100).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.