Motorola Corporation

Marc Osajda

Eric Perraud

Arnaud Delpoux

Jerome Conraux

A sensor device (,) comprises a sensor package (,) having a cavity (,) formed therein, a sensor die (,) mounted on a bottom surface (,) of the cavity (,) and a protective coating (,) formed over the sensor die in the cavity. The protective coating (,) is formed from a material, preferably a polymer material, which is arranged to have a graduated cross-linking density such that the material at the top of the cavity (,) has a high density of cross-linking and the material at the bottom of the cavity (,), which material is in contact with the sensor die, has a low density of cross-linking.

Sensor device and method of forming a sensor device

Control circuit for controlling power supplied to an igniter element and

A steering wheel shaft (103) position sensor includes a light emitter (110) fixed with respect to the shaft (103) and a pair of light detectors (111, 112) fixed with respect to the emitter (110). A disc (113) is mounted for rotation on the shaft (103) between the emitter (110) and the detectors (111, 112) and has a grey scale track extending circumferentially on the disc (113) between the emitter and one of the detectors (111), the grey scale varying from opaque to transparent to the light emitted by the emitter (110). A second, transparent track extends circumferentially on the disc (113) between the emitter and the other detector (112). The outputs of the two detectors (111, 112) are compared to provide an indication of the movement of the shaft (103).

Growing community of inventors

Toulouse, France

Marc Osajda