Device for measurement of the electrical consumption of a portable data- or signal-processing terminal
US6392399B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 11, 2000 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Jan 11, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/3648
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The device for measurement of current exchanged between a battery (1) and electrical circuits (19) of a portable telephone includes a current sensor (21), connecting the battery (1) to the circuits (19), connected to a first input (22) of first integrating circuits (22-27), integrating the current measurement and controlling a comparator (28, 29, 34) detecting the crossing of a high threshold (Vs+) through the integral of the current and applying to a second input (23) of the first integrating circuits (22-27) a calibrated feedback signal to recall below the high threshold (Vs+), second integrating circuits (12-17) to integrate the feedback signals, providing a measurement of the current exchanged. The invention applies well to mobile telephones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.