Abstract: Method of searching for a variation in capacitance of a capacitive sensor, includes a phase of searching for variation in capacitance and, when a capacitance variation has been detected, a phase of verifying the variation in capacitance. The search phase includes a recurrent step of searching for variation in capacitance including steps of measuring the duration of a first measurement sequence and determining, according to the measured duration, whether a first predefined detection criterion for variation in capacitance is verified. The verification phase includes steps of measuring the duration of a second measurement sequence and determining, according to the measured duration, whether a second predefined detection criterion for variation in capacitance is verified.

Abstract: Disclosed is a lighting device (D?) on a motor vehicle, including: at least one light source (D1, D2, D3, D4) controlled by a pulse-width modulated lighting signal (PWM?); and a body controller module (10) generating the lighting signal (PWM?) linked to the light source and, to at least one sensor (100, 200, 300, 400) detecting the approach and/or contact of the user's hand. The device includes a switching element (S1, S2, S3, S4) located between the detection sensor and the light source. The detection sensor includes: receiving and a processing element (101, 201, 301, 401) of the lighting signal; and a control element (102, 202, 302, 402) of the switching element, linked electrically firstly to the receiving and processing element, and secondly to the light source via the switching element. Also disclosed is a method for controlling the light source.

Abstract: Method for communication between an electronic module and a sensor having a light source and being supplied by supply line, the electronic module measuring the modulations of the intensity of the current in the line. The sensor drives a gradual turning on/turning off of the light source by a first modulation of the intensity of the current such that: the light source is turned off, respectively turned on, when the intensity of the current is in a low, respectively high, state, and the light source illuminates, respectively turns off, when the duty ratio of the intensity of the current varies from the high state to the low state and vice versa. During detection, the sensor dispatches a second modulation through the light source, however if the light source is turning on (or off), this is interrupted and the intensity of current is forced to the high (or low) state.

Abstract: Method for determining spurious contacts on a contact detection sensor for a handle of an automobile door, the sensor defining a locking area and being connected to an onboard electronic locking and unlocking system, includes: a) detecting a contact on the locking area when, for an engagement time of the locking mechanism, the number of charge transfers from the sensor is less than a threshold number of charge transfers, b) evaluating the number of charge transfers, starting from the time of the minimum value of the number of measured charge transfers and for an evaluation time in order to distinguish detections of contacts made by the user from detections of spurious contacts, c) if the contact detections are spurious, matching the threshold number of charge transfers in order to be able to detect any next contact originating from the user on the locking area in the presence of spurious contacts.

Abstract: Method of searching for a variation in capacitance of a capacitive sensor, includes a phase of searching for variation in capacitance and, when a capacitance variation has been detected, a phase of verifying the variation in capacitance. The search phase includes a recurrent step of searching for variation in capacitance including steps of measuring the duration of a first measurement sequence and determining, according to the measured duration, whether a first predefined detection criterion for variation in capacitance is verified. The verification phase includes steps of measuring the duration of a second measurement sequence and determining, according to the measured duration, whether a second predefined detection criterion for variation in capacitance is verified.

Abstract: Disclosed is a lighting device (D?) on a motor vehicle, including: at least one light source (D1, D2, D3, D4) controlled by a pulse-width modulated lighting signal (PWM?); and a body controller module (10) generating the lighting signal (PWM?) linked to the light source and, to at least one sensor (100, 200, 300, 400) detecting the approach and/or contact of the user's hand. The device includes a switching element (S1, S2, S3, S4) located between the detection sensor and the light source. The detection sensor includes: receiving and a processing element (101, 201, 301, 401) of the lighting signal; and a control element (102, 202, 302, 402) of the switching element, linked electrically firstly to the receiving and processing element, and secondly to the light source via the switching element. Also disclosed is a method for controlling the light source.

Abstract: Method for communication between an electronic module and a sensor having a light source and being supplied by supply line, the electronic module measuring the modulations of the intensity of the current in the line. The sensor drives a gradual turning on/turning off of the light source by a first modulation of the intensity of the current such that: the light source is turned off, respectively turned on, when the intensity of the current is in a low, respectively high, state, and the light source illuminates, respectively turns off, when the duty ratio of the intensity of the current varies from the high state to the low state and vice versa. During detection, the sensor dispatches a second modulation through the light source, however if the light source is turning on (or off), this is interrupted and the intensity of current is forced to the high (or low) state.

Abstract: Method for determining spurious contacts on a contact detection sensor for a handle of an automobile door, the sensor defining a locking area and being connected to an onboard electronic locking and unlocking system, includes: a) detecting a contact on the locking area when, for an engagement time of the locking mechanism, the number of charge transfers from the sensor is less than a threshold number of charge transfers, b) evaluating the number of charge transfers, starting from the time of the minimum value of the number of measured charge transfers and for an evaluation time in order to distinguish detections of contacts made by the user from detections of spurious contacts, c) if the contact detections are spurious, matching the threshold number of charge transfers in order to be able to detect any next contact originating from the user on the locking area in the presence of spurious contacts.

Abstract: The invention concerns a method of controlling a control circuit, which comprises a step in which a variation in a control parameter for the control circuit is effected, said variation being determined so that at least one emission characteristic of an unfavorable electromagnetic radiation is reduced.

Abstract: The invention concerns a method of controlling a control circuit, which comprises a step in which a variation in a control parameter for the control circuit is effected, said variation being determined so that at least one emission characteristic of an unfavourable electromagnetic radiation is reduced.