Mobile object position detecting apparatus
US7555384B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 13, 2004 |
| Grant date | Jun 30, 2009 |
| Priority date | — |
| Expiry date | Mar 22, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/396
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A control unit 10 detects the presence/absence of receiving position information based on the position data provided from a GPS receiver 14. While the GPS receiver 14 is supplying no position data, the control unit 10 computes the travel distance of a vehicle according to a vehicle speed pulse signal input from a vehicle speed pulse input unit 18. When the obtained travel distance exceeds a predetermined distance, the control unit 10 determines abnormal reception due to faulty equipment. The predetermined distance is set in advance based on a reception disability area, etc. When the control unit 10 determines abnormal reception due to faulty equipment, it turns on an orange indicator. Thus, the person in the vehicle can recognize the abnormal reception due to faulty equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.