Harman Becker Automotive Systems Gmbh

Karl-Anton Becker

Koba Natroshvili

Achim Ratzel

Christoph Benz

Stefan Gierl

Philipp Schmauderer

Andreas Körner

Stefan Brinkhaus

Patrick Hamm

Stefan Vacek

Philip Obergfell

Binh Ton That Giang

Frieder Otto

Embodiments of methods and systems for reception improvement of FM tuners are provided. An example method according to the disclosure includes receiving one or more FM broadcast signals in a common channel (Co-C) situation and provides for receiving one or more FM broadcast signals, selecting a preferred signal and outputting said signal as an IF signal. When a Co-C situation occurs, the method calculates a correlation of the one or more signals and outputs the signal showing a larger consistency value.

Method for reception improvement of a FM tuner in a common channel situation

A system for decoding a stereo multiplex signal, including one or more devices operable to convert the stereo multiplex signal into a sum signal (L+R) and a difference signal (L&#x2212;R). The sum signal and the difference signal may be derived from a left stereo signal (L) and right stereo signal (R). The system may also be operable to determine a first transfer function H(f) and a second transfer function (H(f)) from the sum signal (L+R) and the difference signal (L&#x2212;R). Further, the system may be operable to filter the sum signal (L+R) according to the first transfer function to provide the left stereo signal (L), and filter the sum signal (L+R) according to the second transfer function to provide the right stereo signal (R).

Stereo decoding system

An antenna system is disclosed herein which includes a frontend portion, a backend portion and a feed line which connects frontend portion and backend portion with each other. The frontend portion comprises at least two antennas, a combiner connected downstream of the antennas and upstream of the feed line and antenna connectors that electrically connect through antenna plugs, the antennas to the combiner. The backend portion includes an electrical power source connected to the feed line and a resistance evaluation circuit connected between the electrical power source and the feed line and that measures the resistance of the frontend portion through the feed line. At least one of the antenna connectors is in mechanical contact with a jumper having jumper plugs between which a high resistance connection and a low resistance connection is provided that depends on whether the corresponding antenna is connected to the combiner or not.

Multiple-antenna system

An antenna system is disclosed which includes a frontend portion, a backend portion, a feed line for connecting the frontend portion and the backend portion with each other, and a control unit for controlling the frontend portion and/or backend portion. The frontend portion includes multiple antennas that supply antenna signals and at least one combiner network that connects the antennas to the feed line. The backend portion includes multiple receivers and at least one splitter network that connects the feed line to the receivers. The control unit is configured to evaluate the reception quality and adjust the at least one combiner network and/or splitter network dependent on the reception quality. The at least one combiner network combines the signals from at least two antennas in different, non-overlapping frequency ranges to form at least one combined signal thereof.

Multi-antenna system

An antenna system is disclosed that includes a frontend portion and a backend portion. The frontend portion includes multiple antennas that supply antenna signals, a first control unit for controlling the frontend portion dependent on control signals received from the backend portion, and a first crossover network that connects a feed line to the first crossover network and the first control unit. The backend portion includes multiple receivers, a second control unit that provides the control signals for the first control unit, and a second crossover network that connects the feed line to the second crossover network and the receivers. The frontend portion is configured to transmit via the feed line antenna signals to the backend portion in a certain frequency range. The backend portion is configured to transmit the control signals to the frontend portion in a frequency range other than the certain frequency range.

An example radio receiver and a method is provided for controlling a radio receiver having two tuners, and receiving a hybrid signal containing digital and analog broadcast signal components. According to the example method, a selection is made in the radio receiver to operate between at least the following operating modes of the receiver: (i) a first operating mode in which both tuners are tuned to the same broadcast hybrid signal and where one of the tuners is configured to receive the digital broadcast signal and the other tuner is configured to receive the analog broadcast signal; (ii) a second operating mode in which one of the tuners receiving the digital broadcast signal is the operating tuner and the other tuner is a search and check tuner; and (iii) a third operating mode in which one of the tuners receiving the analog broadcast signal is the operating tuner and the other tuner is a search and check tuner. In this example, the hybrid signal is received and the two tuners are controlled in accordance with the selected operating mode of the receiver.

Growing community of inventors

Karlsbad, Germany

Karl-Anton Becker