Battery time monitor for cellular telephone
US5248929A · kind A · utility
71Cited by
9References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 30, 1992 |
| Grant date | Sep 28, 1993 |
| Priority date | — |
| Expiry date | Apr 30, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S320/21
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A battery monitoring system for a cellular telephone which provides the user with a real time display of the amount of time remaining for use of the cellular telephone in both the standby and conversation modes. The amount of time may be calculated directly from the rate of discharge of the battery or from stored conversion factors corresponding to various states of charge of the battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.