AUDIO/VIDEO SYSTEM

WIPO Patent Application WO2005074320

A3

In an audio/video system having an audio reproduction device (CU) for reproduction of audio signals via at least one loudspeaker unit (LSB1 - LSB5) and having an ultrasonic signal-generating device (6) for generating ultrasonic signals (UT1 - UT3; UT4), wherein the ultrasonic signal-generating device (6) is designed to emit the ultrasonic signals to at least one loudspeaker unit (LSB1, LSB3), which loudspeaker unit is designed to emit the ultrasonic signals, and having an ultrasonic signal-receiving device (5) for receiving ultrasonic signals (UR1 - UR3; UR4) and having an ultrasonic signal-processing unit (7) for processing ultrasonic signals received by the ultrasonic signal-receiving means (5), the ultrasonic signal-processing unit (7) is designed automatically to detect the presence of at least one person (1) from changes in the received ultrasonic signals (UR1 - UR3; UR4) and to emit a detection signal (DS).

JPH0690055	PROBLEM TO BE SOLVED: To detect a position of an underwater sensor.
WO/2020/001892	ROOF FIN FOR A VEHICLE FOR SENSING AMBIENT NOISES, VEHICLE HAVING SUCH A ROOF FIN, KIT FOR A ROOF FIN, WHICH ROOF FIN CAN BE RETROFITTED ON A VEHICLE, AND METHOD FOR PRODUCING A ROOF FIN
JP6907456	Output device, location information management system, location information management method, and program

ULLMANN PAUL (AT)

PCT/IB2005/050312

October 20, 2005

January 26, 2005

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KONINKL PHILIPS ELECTRONICS NV (NL)
ULLMANN PAUL (AT)

G01S5/18; G01S15/04; G01S15/52; G01S15/87; G01S15/88; H04S3/00; H04S7/00; (IPC1-7): H04S3/00; G01S5/18; H04S7/00

WO2002008782A1

2002-01-31

GB2203315A	1988-10-12
GB2186367A	1987-08-12
DE4027338A1	1992-03-12
US5719944A	1998-02-17

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