Systems and methods for battery status indication
US8044815B2 · kind B2 · utility
21Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2007 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Aug 17, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/181
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method and apparatus are provided to indicate battery capacity status. Different blinking frequencies of an LED correspond to different battery states of charge. Furthermore, the present invention provides a smooth visual brightness change of the LED by providing the appropriate LED current according to human eye characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.