Infineon Technologies Ag

Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Nenad Stevanovic

Giuseppe Li Puma

Carsten Eisenhut

Bedrich J Hosticka

Jens Kissing

Dietolf Seippel

Matthias Hillebrand

Andreas Teuner

Jos&eacute; Santos Conde

A first signal path having an amplifier and a second signal path having an amplifier with adjustable gain factor are provided. A signal applied to the first and second signal paths is amplified and demodulated on the first signal path. Concurrently, the signal is amplified on the second signal path with a gain factor, and a power of the signal amplified by the second signal path is determined and used for determining the gain factor. A signal conditioning circuit has first and second signal paths and a first and a second operating state. In the first operating state, the first signal path is arranged for amplification for a demodulation, and the second signal path is arranged for amplification for determination of a power of the signal present. In the second operating state, one of the two signal paths is inactive and the other is arranged for demodulating the signal present.

Signal processing method, particularly in a radio-frequency receiver, and signal conditioning circuit

An amplifier arrangement contains a first signal input for supplying a carrier signal, a second signal input for supplying an amplitude modulation word and an amplifier stage. The amplifier stage is connected to a reference potential connection and, by means of a control connection via a means for DC signal suppression, to the first signal input. A DC voltage converter having a first connection for supplying a potential is designed to convert the potential into a supply potential, which is variable over a period of time, on the basis of a control signal, and outputs the supply potential to the second connection of the amplifier stage. In addition, the amplifier arrangement comprises a digital/analog converter which is coupled to the control connection of the amplifier stage. The input of the converter is connected to the second signal input.

Amplifier arrangement, polar transmitter having the amplifier arrangement and method for amplifying signals

A device for seat supervision in motor vehicles has a pulsed monochromatic light source for the short-time illumination of a supervised space. An image sensor array (ISA) is also provided for recording an image of the supervised space. The ISA is provided with a global electronic shutter unit which permits the illumination time of the ISA to be adjusted independently of a readout clock of the ISA. A synchronization unit for synchronizing the operation of the pulsed laser source and the ISA is provided. Also provided is a control unit for controlling the light source and the ISA so as to create a first image of the supervised space during illumination of the same at a first time and to create a second image of the supervised space without illumination of the same at a second time. Finally, a unit for creating a difference image from the first and second images is also provided.

Device and method for seat supervision in motor vehicles

Growing community of inventors

Bochum, Germany

Nenad Stevanovic