Calculation of estimated time of arrival (ETA) based on thoroughfare classification and driving history
US6144917A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1998 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | Oct 30, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A portable electronic navigational aid device and method calculates estimated time en route and estimated time of arrival. A user inputs a plurality of variables, including identity, cartographic data, final destination. Upon receiving the inputs, the device determines from cartographic data the estimated distance to the final destination and the type of thoroughfare the inputted trip will traverse. During operation, the device recalls the average driving velocity for the inputted driver over each different type of thoroughfare traversed. Using prestored average velocity data, the device calculates an initial estimated time en route and an estimated time of arrival for a desired route. The device continues to receive GPS data as to the driver's position and velocity and updates the average velocity record for that driver on the specific type of thoroughfare. As the average velocity fluctuates, the device adjusts the estimated time en route and the estimated time of arrival. The device further has control processes for potentially erroneous sampling. The device has a predetermined threshold in which data inputs below that threshold will not be averaged into the memory. The second co…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.