Portable terminal capable of automatically switching into moderate power consumption mode for receiving data
US6766246B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 26, 2002 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Jul 26, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Personal digital assistance (PDA) is set in a second low-power-consumption (LPC) mode if its power switch is OFF, while the PDA is set in a normal mode if its power switch is ON. If it is determined that the PDA is connected to navigation equipment when the PDA is in the second LPC mode, the PDA automatically switches to a first LPC mode in which the functional blocks used for receiving position data from the navigation equipment and storing the received position data are activated but the other functional blocks are not activated. Then the PDA automatically receives the position data from the navigation equipment and stores the received position data. Thus the PDA can receive the latest position data without wasting the power of the PDA, even when its power switch is OFF.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.