Apparatus and method for forecasting output voltage of a battery of a digital camera
US6339264B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 4, 2001 |
| Grant date | Jan 15, 2002 |
| Priority date | — |
| Expiry date | Apr 4, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0048
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is disclosed an apparatus and a method for forecasting output voltage of a battery of a digital camera. A dummy load is disconnected after the digital camera is powered on. An output voltage of the battery is obtained when he dummy load is off. The dummy load is then conducted. An output voltage of the battery is obtained when the dummy load is on. An internal resistance of the battery and the output voltage of the battery in operating the power consumptive elements are determined based on the output voltages, so as to obtain the voltage drop of the output voltage of the battery caused by power consumptive elements thereby being aware of the remaining power of the battery and obtaining the maximum power supplying efficiency for the digital camera.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.