Distance determining method for e.g. wireless home cinema system, involves determining transmission duration of audio frequency signal, and calculating distance with respect to transmission duration of audio frequency signal

摘要

The method involves receiving an audio frequency signal (F1) provoked from an equipment (100), and transmitting a stop request stopping transmission of the signal, to the equipment, where the stop request is transmitted from reception of the signal. Transmission duration of the signal is determined, and a distance is calculated with respect to the transmission duration of the signal. The request is included in an audio frequency signal (F2) transmitted by another equipment (200). Independent claims are also included for the following: (1) a computer program product comprising instructions to perform a method for determining a distance between two equipments (2) a storage unit comprising instructions to perform a method for determining a distance between two equipments (3) an equipment comprising distance determination units (4) an equipment comprising signal reception units.