The Procter Gamble Company

Braun Gmbh

Carl Stückrath

Norbert Schaefer

Martin Stratmann

Hansjörg Reick

Torsten Klemm

Kervin Heinrich Küchler

Andreas Moehring

Ingo Vetter

Andreas Ernst

Jens-Uwe Garbas

Jochen Seitz

Marcus Bocksch

Küchler Kervin

An apparatus for determining a body portion of a user treated by the user using a personal hygienic device. The apparatus includes a camera configured to capture the user to obtain a pictorial representation of the user while treating the body portion using the personal hygienic device; an interface configured to receive sensor data from at least one inertial sensor residing in the personal hygienic device; and an analyzer configured to analyze the pictorial representation and the sensor data to determine the body portion.

Determination of a currently treated body portion of a user

A personal hygiene device has a resonant motor and a motor control unit for applying a periodic voltage signal with a driving frequency at the resonant motor for driving the resonant motor into an oscillating motion with an oscillating frequency equal to the driving frequency. The motor control unit comprises a synthesizer circuit for digitally synthesizing the periodic voltage signal from voltage pulses of variable length provided with a pulse frequency higher than the driving frequency such that at least two voltage pulses are applied at least in one of two half cycles of each period of the periodic voltage signal.

Personal hygiene device with resonant motor

Growing community of inventors

Friedberg, Germany

Carl Stückrath