Method and apparatus for allowing a battery to preserve charge in a handheld device without an supplying unregulated voltage to selected internal components
US6708280B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2000 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Sep 21, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/30
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A handheld computer comprises a rechargeable battery module that outputs a source voltage to power one or more components of the handheld computer. The handheld computer includes a power monitoring module that receives the source voltage and outputs a rail voltage. The power monitoring module outputs the rail voltage to correspond to a fractional duty cycle of the source voltage when the source voltage is greater than a designated voltage. The power monitoring module outputs the rail voltage to correspond to a full duty cycle of the source voltage when the source voltage is less than the designated voltage. The handheld computer includes a power rail coupled to the power monitoring module. The power rail receives the rail voltage so as to extend power from the battery module to the one or more components of the handheld computer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.