Patent · US Active

Key location system

US10313033B2 · kind B2 · utility

0Cited by

0References

16Claims

0Family size

Assignee

CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

Thomas Reisinger · Regenstauf, DE
Thomas Georgi · Regensburg, DE
Stefan Hammes · Regensburg, DE

Key dates

Filing date	Aug 25, 2016
Grant date	Jun 4, 2019
Priority date	—
Expiry date	Dec 9, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH04B17/27
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The present disclosure relates to a method and devices for transit-time-based distance measurement and the teachings may be applied to locating keys for a motor vehicle. In one embodiment, a system for detecting the distance between a vehicle and an associated key may include: a transceiver associated with a vehicle; a key for the motor vehicle; and a processor configured to determine an estimated signal transit time between the transceiver and the key based at least in part on a ratio of a length of two time intervals between the transmission or reception of a message between the transceiver and the key.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.