Monitoring a location of a mobile computing device
US7769542B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2007 |
| Grant date | Aug 3, 2010 |
| Priority date | — |
| Expiry date | Feb 27, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A memory for storing constraint data describing a constrained area, a location sensor, and a processor operationally coupled to the memory and location sensor for location tracking. In operation, the device acquires real-time location information from the location sensor and calculates a location within the constrained area utilizing the constraint data and the acquired real-time location information. The location sensor may include an accelerometer that produces signals corresponding to a change in speed and a gyroscope that produces signals corresponding to a direction traveled. The processor may calculate a distance traveled over time utilizing the signals from the accelerometer and calculate the location utilizing the calculated distance traveled over time and the direction traveled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.