METHOD FOR DETERMINING, WITH AN ANALYSING DEVICE SUCH AS AN AUDIMETER, THE SOURCE SELECTED BY A USER ON AN ANALYSED DEVICE SUCH AS A TELEVISION RECEIVER SET

摘要

The source to be determined, displayed on the screen (16) of the television receiver set (14) is selected among in particular tuners of the television receiver set and/or a video reader/inscriber (26) and/or a digital television decoder (22). The analysed device (14) is in particular a television receiver set (16) displaying on its screen the selected source signal. The method comprises steps which consist in: a) from the analysed device, collecting a first time reference signal, synchronised on the frames of the signal selected for said analysed device; b) retrieving video signals delivered simultaneously by the different sources of respective second time reference signals, synchronised on the frames of signals derived from different corresponding sources; c) searching for a synchronism relationship between the first time reference signal and the second time reference signals; and d) indicating to the analysing device as selected source the one which verifies said synchronism relationship.