Abstract: The communication system of an aircraft includes a set of communication channels, a communication computer, an audio device and a control device connected to the communication computer. It also includes a wireless communication unit interfaced to the communication computer and configured for simultaneously implementing: a two-way wireless audio link between the wireless communication unit and the audio device, so as to allow an audio communication on one of the communication channels by the audio device, and a two-way wireless data link between the wireless communication unit and the control device, allowing the control device to control the communication computer.

Abstract: The device comprises an intrusion detection module (6), an image acquisition module (14), an energy management module (13) and an autonomous power source (9), the said detection module (6) being designed to furnish a detection signal having a first predetermined state when an intrusion is detected and a second predetermined state otherwise, and the said management module (13) being designed to make the said device change over from a waiting mode to a working mode by activating the supply of the image acquisition module (14) by the said autonomous power source (9) when the said signal changes over from the second state to the first state. The method includes a step consisting in furnishing the detection signal and, when the detection signal changes over from the second state to the first predetermined state, a step consisting in making the said device change over from the waiting mode to the working mode and a step consisting in achieving image acquisition.

Abstract: The disclosed embodiments relate to a defogging or de-icing system for an optical instrument including a protection housing. According to the disclosed embodiments, the system includes: a porthole covered on at least one face thereof with a heat conducting film provided at the edge of the useful area of said porthole, the porthole being mounted on the protection housing, heating members placed in contact with the film for heating said film, and a power supply circuit for the heating members.

Abstract: The disclosed embodiments relate to a defogging or de-icing system for an optical instrument including a protection housing. According to the disclosed embodiments, the system includes: a porthole covered on at least one face thereof with a heat conducting film provided at the edge of the useful area of said porthole, the porthole being mounted on the protection housing, heating members placed in contact with the film for heating said film, and a power supply circuit for the heating members.

Abstract: The device comprises an intrusion detection module (6), an image acquisition module (14), an energy management module (13) and an autonomous power source (9), the said detection module (6) being designed to furnish a detection signal having a first predetermined state when an intrusion is detected and a second predetermined state otherwise, and the said management module (13) being designed to make the said device change over from a waiting mode to a working mode by activating the supply of the image acquisition module (14) by the said autonomous power source (9) when the said signal changes over from the second state to the first state. The method includes a step consisting in furnishing the detection signal and, when the detection signal changes over from the second state to the first predetermined state, a step consisting in making the said device change over from the waiting mode to the working mode and a step consisting in achieving image acquisition.