Thomson Licensing

Thomson Licensing S.a.

Marc Louchkoff

Jean-Pierre Bertin

Anthony Pesin

Claude Rambault

Claude Fouque

Antony Pesin

Pascal Le Roux

Robert Triole

Laurence Piquet

A Multi-tuner reception system includes at least a first tuner and a second tuner. The first tuner is adapted to translate a frequency of a first received signal into a first translated frequency. The first tuner includes a first local oscillator operating at a first local oscillator frequency. The second tuner is adapted to translate a frequency of a second received signal into a second translated frequency. The second tuner includes a second local oscillator operating at a second local oscillator frequency. The second local oscillator frequency is equal to a sum of the first local oscillator frequency and a continually time variable offset frequency.

Signal reception multi-tuner system and corresponding method

The invention reduces the time needed for an automatic channel search on a device receiving channels of different widths. The invention proposes a channel detection method which carries out a first scan of the frequency range in order to locate all the carrier frequencies. The measurements are saved. Then an analysis of the saved measurements can determine whether it comes from a satellite or FM source, only the data corresponding to satellite sources are kept.

Satellite transmission channel detection method and reception device using the method

The invention proposes an LNB using two transposition frequencies chosen on either side of the reception band so as to obtain a transposition of supradyne type and a transposition of infradyne type according to the frequency used. This choice of transposition frequencies makes it possible to have an overlap zone in the middle of the reception band which is transposed with the aid of the two oscillation frequencies but at different frequencies. This makes it possible to choose between the two transpositions in the case where the frequency transposed with the aid of an oscillator corresponds to a particularly noisy frequency.

Outside unit for satellite reception and method of reception with said unit

The invention relates to a receiverof signals and proposes to remedy a non-linearity problem in an amplifierof an integrated tunerA linearity compensation circuitis inserted upline from the tunerThe compensation circuitpresents a characteristic that is the inverse of the characteristic of the low-noise amplifierin order to compensate for the linearity defect.

Receiver including linearity compensation in the receive band

Command protocol for circuits used for receiving microwave signals and device implementing the protocol

Growing community of inventors

Aubagne, France

Marc Louchkoff