GPS device and method for reducing light emitted by display
US7477991B2 · kind B2 · utility
6Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2005 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | Mar 12, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A GPS device and method for converting display information between a first display mode and a second display mode by negativizing pixels or other image elements, wherein negativizing entails converting relatively larger areas of lighter image elements to darker image elements and converting relatively smaller areas of darker image elements to lighter image elements so as to result in reduced total emission of light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.