Method of determining vehicle location from key fob
US8547253B2 · kind B2 · utility
13Cited by
1References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2009 |
| Grant date | Oct 1, 2013 |
| Priority date | — |
| Expiry date | Aug 1, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/74
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of indicating a proximity value representative of the distance between a key fob (202) and a vehicle (102) includes transmitting (304, 406, 504) at least one locate signal from the key fob (202) to the vehicle (102), transmitting (364, 468, 562) at least one response signal from the vehicle (102) to the key fob (202) in response to the at least one locate signal, performing (362, 462, 510) RSSI measurements of either the at least one locate signal or the at least one response signal, and displaying (318, 412, 514) the proximity value on the key fob (202) based on the RSSI measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.