Abstract: A device (DA) analyses an immersive virtual reality system (SI) comprising a target (CD) that is securely fastened to an object (OM), detecting means (MD) that deliver a first signal representative of the current position of the target (CD), processing means (MT) that define images depending on the detected current position, and at least one image-displaying means (EA, PI). This device (DA) comprises a first sensor (C1) that generates a second signal when the object (OM) reaches a known position, a second sensor (C2) that generates a third signal when it detects a change in displayed image consecutive to the detection of the object (OM) in this known position by the detecting means (MD), and analysing means (MA) that determine first and second times of reception of the second and third signals then a first time difference between these first and second times of reception.

Abstract: The invention relates to a device (DA) performing analyses in an immersive virtual reality system, comprising a target (CD) secured to an object (O) that can move in a space (EP), and detection means (MD) for detecting the current position of said target (CD) in said space (EP) and delivering a first signal representing said current position. Said device (DA) comprises a sensor (CC) for generating a second signal when the object (O) reaches a known position in the space (EP), and analysis means (MA) that are coupled to the sensor (CC) and detection means (MD) and are used to determine a first time when a first signal representing said known detected position is received, and a second time when said second signal is received, and then to determine a temporal distance between the determined first and second receiving times.

Abstract: A device (DA) analyses an immersive virtual reality system (SI) comprising a target (CD) that is securely fastened to an object (OM), detecting means (MD) that deliver a first signal representative of the current position of the target (CD), processing means (MT) that define images depending on the detected current position, and at least one image-displaying means (EA, PI). This device (DA) comprises a first sensor (C1) that generates a second signal when the object (OM) reaches a known position, a second sensor (C2) that generates a third signal when it detects a change in displayed image consecutive to the detection of the object (OM) in this known position by the detecting means (MD), and analysing means (MA) that determine first and second times of reception of the second and third signals then a first time difference between these first and second times of reception.