Johnson Controls Technology Company

Elie Abichaaya

Douglas C Campbell

Thierry Pinard

Christophe Gueble

Didier Pozzi

Julien Reimon

Karmaidine Mougamadou

Volker Dreisbach

Pascal Laignel

The invention provides a method of transmitting information in wireless manner by radio signals between a pressure sensor equipping a wheel of a motor vehicle and a central processor unit equipping said vehicle. The sensor transmits, for the attention of the central processor unit, firstly signals representative of digital data to be transferred to the central processor unit, and secondly a location signal used by the central processor unit to identify the vehicle wheel from which the digital data is coming. In accordance with the invention, the emission power of the location signal is lower than the emission power of the data transmission signals, and/or the duration of the location signal is adjusted in such a manner that the higher the speed of the vehicle the shorter the duration of the location signal. The invention is applicable to systems for monitoring the pressures of the tires of a vehicle.

Method for exchanging signals between a tire pressure sensor and a central processing unit in a motor vehicle

A portable electronic device for displaying information from a vehicle having a first transceiver to a user carrying the portable electronic device includes a second transceiver. The portable electronic device uses the second transceiver to conduct bi-directional communications with the vehicle systems. The portable electronic device may be a key-fob and include a display for displaying the information from the vehicle.

Bi-directional portable electronic device for interaction with vehicle systems

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Jouy le Moutier, France

Elie Abichaaya