Method and apparatus for protecting a circuit module in a communication device
US6381477B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1999 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Nov 5, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/3888
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for protecting a circuit module in a communication device includes first detecting whether a circuit module is present in the communication device. A next step includes measuring a supply voltage to the communication device. A next step includes comparing the supply voltage to a predetermined threshold voltage. When the supply voltage is below the threshold, a next step includes supplying normal functionality to the phone and returning to the comparing step. However, when the supply voltage is above the threshold, a next step includes powering down a connection to the SIM card to limit functionality of the communication device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.