Abstract: The present invention relates to a lighting and/or indicating device, such as a vehicle headlamp, equipped with at least one halogen bulb, wherein it comprises a switch-mode power supply device for supplying power to the halogen bulb, said switch-mode power supply device comprising means for regulating the luminous flux provided by the halogen bulb and being installed close to the halogen bulb so as to minimize electromagnetic interference and dispersion of the supply voltage at the terminals of the halogen bulb.

Abstract: A device for measurement of characteristic parameters of at least one assembly of at least one light emitting diode (LED) comprising a measurement circuit for each assembly, wherein the measurement circuit has an electrical input which can be connected to the LED, a single measurement output to provide electrical values which are representative of at least two characteristic parameters of the LED, a first circuit configuration, which is designed to provide the measurement output with a value which is representative of a first characteristic parameter, a second circuit configuration, which is designed to provide the measurement output with a value which is representative of a second characteristic parameter and means for switching between the first circuit configuration and the second circuit configuration.

Abstract: A method and a device for gradually controlling the illuminating light intensity of light-emitting diodes by modulating the width of current pulses of defined duty cycle, using a DC-to-DC voltage converter and a control circuit for switching the supply current of the light-emitting diodes. Prior to switching the power supply of the diodes the DC-to-DC converter is initiated (A), so as to generate voltage pulses of defined duty cycle; the steady state of each pulse is determined (B), so as to generate a voltage pulse (CP) calibrated to a voltage level substantially corresponding to the steady-state level; and then the light-emitting diodes are powered (D) by applying each calibrated pulse to the light-emitting diodes by means of the switchable control circuit.

Abstract: A communication method is implemented in an on-board network between a master station (M) and a plurality of slave stations (S1, S2, S3, S4), of the type of those compatible with the standard Local Interconnect Network (LIN) protocol in which data frames are sent by the slave stations on a serial bus in response to the sending by the master station of identifiers representative of the required content of the frames. All or part of each of the specific data frames attached to the same predetermined identifier is formed sequentially by each of the slave stations. This enables an optimisation of the load on a LIN network, thus enabling use of this economical standard for all “passenger compartment functions”, and in particular for the management of AFS type advanced lighting systems.

Abstract: A process and a device for controlling a plurality of LED assemblies of an automotive vehicle, each LED assembly (Gi) executing a specific lighting/signalling function. The electrical power level (Pi) delivered by the electrical source is modulated according to distinct power levels (Pi) with relation to the function associated with each LED assembly (Gi) and temporary multiplexing is executed in order to successively transmit the distinct power levels (Pi) to the assemblies (Gi) over a multiplexing period (Tmux). Demultiplexing is effected and each distinct electrical power level (Pi) is selectively delivered to the LED assembly (Gi) concerned.

Abstract: The invention relates to a device for controlling diode lamps comprising a lighting module having at least one diode lamp, the diode lamp pertaining to a predefined range, at least one device for transmitting a unique signature representing the range, and an associated control module comprising reception means (for receiving a unique signature transmitted by the lighting module, and current adjustment means for adjusting and supplying, as a function of the transmitted signature, a current to said lighting module to cause the diode lamp to operate.

Abstract: A communication method is implemented in an on-board network between a master station (M) and a plurality of slave stations (S1, S2, S3, S4), of the type of those compatible with the standard Local Interconnect Network (LIN) protocol in which data frames are sent by the slave stations on a serial bus in response to the sending by the master station of identifiers representative of the required content of the frames. All or part of each of the specific data frames attached to the same predetermined identifier is formed sequentially by each of the slave stations. This enables an optimisation of the load on a LIN network, thus enabling use of this economical standard for all “passenger compartment functions”, and in particular for the management of AFS type advanced lighting systems.

Abstract: A method and a device for gradually controlling the illuminating light intensity of light-emitting diodes by modulating the width of current pulses of defined duty cycle, using a DC-to-DC voltage converter and a control circuit for switching the supply current of the light-emitting diodes. Prior to switching the power supply of the diodes the DC-to-DC converter is initiated (A), so as to generate voltage pulses of defined duty cycle; the steady state of each pulse is determined (B), so as to generate a voltage pulse (CP) calibrated to a voltage level substantially corresponding to the steady-state level; and then the light-emitting diodes are powered (D) by applying each calibrated pulse to the light-emitting diodes by means of the switchable control circuit.

Abstract: A communication method is implemented in an on-board network between a master station (M) and a plurality of slave stations (S1, S2, S3, S4), of the type of those compatible with the standard Local Interconnect Network (LIN) protocol in which data frames are sent by the slave stations on a serial bus in response to the sending by the master station of identifiers (4, 6) representative of the required content of the frames. All (7) or part of each of the specific data frames attached to the same predetermined identifier (4, 6) is formed sequentially by each of the slave stations. This enables an optimisation of the load on a LIN network, thus enabling use of this economical standard for all “passenger compartment functions”, and in particular for the management of AFS type advanced lighting systems.

Abstract: A device for measurement of characteristic parameters of at least one assembly of at least one light emitting diode (LED) comprising a measurement circuit for each assembly, wherein the measurement circuit has an electrical input which can be connected to the LED, a single measurement output to provide electrical values which are representative of at least two characteristic parameters of the LED, a first circuit configuration, which is designed to provide the measurement output with a value which is representative of a first characteristic parameter, a second circuit configuration, which is designed to provide the measurement output with a value which is representative of a second characteristic parameter and means for switching between the first circuit configuration and the second circuit configuration.

Abstract: A process and a device for controlling a plurality of LED assemblies of an automotive vehicle, each LED assembly (Gi) executing a specific lighting/signalling function. The electrical power level (Pi) delivered by the electrical source is modulated according to distinct power levels (Pi) with relation to the function associated with each LED assembly (Gi) and temporary multiplexing is executed in order to successively transmit the distinct power levels (Pi) to the assemblies (Gi) over a multiplexing period (Tmux). Demultiplexing is effected and each distinct electrical power level (Pi) is selectively delivered to the LED assembly (Gi) concerned.

Abstract: The invention relates to a device for controlling diode lamps comprising a lighting module comprising: having at least one diode lamp, the diode lamp pertaining to a predefined range, at least one device for transmitting a unique signature representing the range, and an associated control module comprising reception means (for receiving a unique signature transmitted by the lighting module, and current adjustment means for adjusting and supplying, as a function of the transmitted signature, a current to said lighting module to cause the diode lamp to operate.

Abstract: The invention relates to a device for controlling diode lamps comprising a lighting module having at least one diode lamp, the diode lamp pertaining to a predefined range, at least one device for transmitting a unique signature representing the range, and an associated control module comprising reception means (for receiving a unique signature transmitted by the lighting module, and current adjustment means for adjusting and supplying, as a function of the transmitted signature, a current to said lighting module to cause the diode lamp to operate.

Abstract: A measurement device and method for determining the angular position of a pivoting headlight by means of a measurement device that comprises at least one ferromagnetic element that emits a local magnetic field, first means of measuring the local magnetic field in projection on a first axis, the at least one ferromagnetic element being mounted so as to pivot with respect to the at least one first measurement means, and an electronic processing unit, the method comprising a measurement step, and a second processing step during which the electronic processing unit calculates the angular position of the headlight, that, during the measurement step, the intensity of the local magnetic field is measured in projection on a second axis orthogonal to a first axis, and that, during a second processing step, the electronic processing unit calculates a value representing the angle of the local magnetic field with respect to the first axis.

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 relates to a device for controlling diode lamps comprising a lighting module having at least one diode lamp, the diode lamp pertaining to a predefined range, at least one device for transmitting a unique signature representing the range, and an associated control module comprising reception means (for receiving a unique signature transmitted by the lighting module, and current adjustment means for adjusting and supplying, as a function of the transmitted signature, a current to said lighting module to cause the diode lamp to operate.

Abstract: The invention concerns a measurement device and method for determining the angular position of a pivoting headlights by means of a measurement device that comprises a ferromagnetic element that emits a local magnetic field, first means of measuring the local magnetic field in projection on a first axis, the ferromagnetic element being mounted so as to pivot with respect to the first measurement means, and an electronic processing unit, the method comprising a measurement step, and a second processing step during which the electronic processing unit calculates the angular position of the headlight, characterized in that, during the measurement step, the intensity of the local magnetic field is measured in projection on a second measurement axis orthogonal to a first measurement axis, and in that, during second processing step, the electronic processing unit calculates a value representing the angle of the local magnetic field with respect to the first measurement axis.

Abstract: A communication method is implemented in an on-board network between a master station (M) and a plurality of slave stations (S1, S2, S3, S4), of the type of those compatible with the standard Local Interconnect Network (LIN) protocol in which data frames are sent by the slave stations on a serial bus in response to the sending by the master station of identifiers (4, 6) representative of the required content of the frames. All (7) or part of each of the specific data frames attached to the same predetermined identifier (4, 6) is formed sequentially by each of the slave stations. This enables an optimisation of the load on a LIN network, thus enabling use of this economical standard for all “passenger compartment functions”, and in particular for the management of AFS type advanced lighting systems.

Abstract: The present invention relates to a lighting and/or indicating device, such as a vehicle headlamp, equipped with at least one halogen bulb, wherein it comprises a switch-mode power supply device for supplying power to the halogen bulb, said switch-mode power supply device comprising means for regulating the luminous flux provided by the halogen bulb and being installed close to the halogen bulb so as to minimize electromagnetic interference and dispersion of the supply voltage at the terminals of the halogen bulb.

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.