Michael Rosenfelder

Title: Michael Rosenfelder and Vehicle Wireless-Key Technology.

Introduction

Michael Rosenfelder is an inventor associated with Spaichingen, Germany, and Marquardt GmbH. His work includes a patent for a wireless vehicle key designed to unlock a vehicle or enable one of its functions. The patent information provided lists 1 patent.

Latest Patents

Rosenfelder’s listed patent, “Wireless Key for Unlocking a Vehicle and/or for Enabling a Function of the Vehicle,” describes a key with a motion sensor, an evaluation unit, and a wireless transceiver. The transceiver can signal its availability and exchange data with a connection partner.

To reduce energy use, the evaluation unit switches the transceiver from an operating mode to a lower-power sleep mode when the sensor detects no movement during a predetermined interval. When movement is detected, the evaluation unit switches the transceiver back to an operating mode. This approach links the key’s wireless activity to detected motion.

Career Highlights

The available information associates Rosenfelder with Marquardt GmbH and identifies his vehicle-key patent as a contribution to automotive access and vehicle-function technology. The patent’s described design focuses on managing transceiver power while retaining motion-triggered wireless operation.

Collaborations

The provided information names Roland Moser and Antoine Bacle as Rosenfelder’s coworkers. It does not specify their roles in the patent or describe particular joint projects.

Conclusion

Michael Rosenfelder’s listed patent presents a motion-responsive wireless key that can reduce transceiver energy use while supporting vehicle unlocking and other vehicle functions.