Modularized functionality enhancement for a cellular telephone
US6718182B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 18, 2000 |
| Grant date | Apr 6, 2004 |
| Priority date | — |
| Expiry date | Mar 29, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/72412
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A cellular telephone has a processing circuit for controlling the operations of the cellular telephone, a keypad to provide input from a user, a display to provide visual output to the user, and an input/output (I/O) port electrically connected to the processing circuit. A peripheral module has a peripheral circuit for performing a peripheral function, a memory, and a connecting port for connecting the peripheral circuit and the memory to the I/O port of the cellular telephone. The memory of the peripheral module has a peripheral driver program for controlling operations of the peripheral circuit. After the connecting port of the peripheral module is electrically connected to the I/O port of the cellular telephone, the processing circuit executes the peripheral driver program so as to perform the peripheral function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.