Sony Deutschland Gmbh

Jochen Rebmann

Zhaocheng Wang

Ralf Böhnke

Ralf Boehnke

Juan Benigno Nogueira-Nine

Volker Wullich

Ingo Ruhm

Oliver Kraemer

A mobile magnetic field apparatus operable to generate and/or receive a magnetic field including at least one coil operable to generate and/or receive a magnetic field, respectively, the magnetic field being modulated by at least one frequency and/or identification code, respectively.

Distance, orientation and velocity sensitive controller

A heterogeneous wireless network topology suited for low-power, short-range and ubiquitous ad-hoc communication. The network topology integrates different wireless transmission technologies, in particular to a wireless sensor network including different node types and communication technologies. The network is highly heterogeneous and can be operated according to the master-slave principle. The nodes can have different wireless communication means tailored to their individual role in the network and other constraints, thus allowing different communication patterns.

Heterogeneous wireless data transmission network

In a backscatter interrogator reception method, a continuous carrier signal with a frequency fis sent from an interrogator to a tag device over a wireless link, the tag device transmits data to the interrogator using a modulated backscatter signal, and the received modulated backscatter signal is demodulated by the interrogator to retrieve the data transmitted from the tag device. According to the present invention, the interrogator estimates the phase and the amplitude of an inband interferer signal contained in the received modulated backscatter signal, generates a cancellation signal having the opposite phase and the same amplitude as the estimation of the inband interferer signal, and combines said cancellation signal with the received backscatter signal in order to reduce the influence of the inband interferer signal. In addition, a two-stage interferer cancellation scheme is proposed.

Backscatter interrogator reception method and interrogator for a modulated backscatter system

Growing community of inventors

Backnang, Germany

Jochen Rebmann