Electronic apparatus having the function of displaying the battery residual quantity and method for displaying the battery residual quantity
US6522361B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1997 |
| Grant date | Feb 18, 2003 |
| Priority date | — |
| Expiry date | Feb 27, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/3832
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electronic equipment having the function of displaying the battery residual quantity for displaying the usable residual time of a battery pack used as a power source of the electronic equipment. The equipment is designed to cope with different types or future version of the battery cell. The residual usable time of the battery can be known with improved display accuracy. The video camera 60 carries a battery pack 1 outputting at least the information on the residual battery capacity, charging/discharging current detection information and the battery cell voltage detection information. The video camera 60 includes a micro-computer 63 having a communication circuit 65 for receiving the above information from the battery pack 1, a calculation circuit 66 for calculating the current residual battery capacity based on the information from the battery pack 1 received by the communication circuit 65, and a display control circuit 67, and a display device 64 fed with a display signal corresponding to the results of calculations by the calculation circuit 66 of the micro-computer 63 for displaying the residual battery capacity based on the display signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.