An autonomous vehicle control device controls an autonomous vehicle provided with a warning sound output device. The autonomous vehicle control device prohibits transition to a traveling mode when an abnormality occurs in the warning sound output device. Before traveling, the autonomous vehicle control device may execute sound output control to cause the warning sound output device to output a warning sound, and determine whether the abnormality occurs based on output data of the warning sound output by the warning sound output device.

An autonomous vehicle control device controls an autonomous vehicle provided with a warning sound output device. The autonomous vehicle control device prohibits transition to a traveling mode when an abnormality occurs in the warning sound output device. Before traveling, the autonomous vehicle control device may execute sound output control to cause the warning sound output device to output a warning sound, and determine whether the abnormality occurs based on output data of the warning sound output by the warning sound output device.

A system includes a processor configured to determine an applicable pre-defined vehicle system state set, defining preferred vehicle system states when a driver is away from a vehicle. The processor is also configured to determine a driver exit-event while a vehicle state in the state set varies from a preferred setting and notify a driver mobile device of the variance, responsive to the exit event.

A method comprising: (a) heating a light module of a vehicle with a heater; (b) monitoring a temperature of the light module; (c) activating a communication sequence; and (d) performing the communication sequence so that a message is conveyed between a controller of the light module and a controller of the vehicle.

An aircraft beacon light with integrated health monitoring comprises an annular arrangement of light sources, which are configured for repeatedly emitting beacon light flashes; a light detection sensor surrounded by the annular arrangement of light sources; and at least one reflective portion arranged to reflect light emitted by the annular arrangement of light sources onto the light detection sensor.

A variable light distribution light source includes an array-type light-emitting device. The array-type light-emitting device includes a power supply terminal and multiple pixel circuits electrically coupled and spatially arranged in a matrix. A power supply circuit includes a power supply unit that supplies electric power to the array-type light-emitting device. An output of a DC/DC converter is coupled to the power supply terminal VDD of the array-type light-emitting device via an output terminal. A voltage setting circuit generates a controllable correction voltage. A feedback circuit generates a feedback voltage based on the correction voltage and the control target voltage that corresponds to the output voltage of the DC/DC converter, and supplies the feedback voltage to a feedback pin of a converter controller.

An adapter for use with components of a truck trailer. The adapter may include multiple input terminals corresponding with multiple terminals of a trailer component socket of a trailer, and multiple output terminals configured to electrically connect with corresponding input terminals of a trailer component. The adapter may also include an adapter circuit configured to electrically connect at least four of the input terminals with at least four of the multiple output terminals. The multiple output terminals may include at least two mode selection output terminals configured to provide a mode selection to the trailer component, and the trailer component optionally includes control logic configured to activate and deactivate the trailer component according to the mode selection.

A vehicular error detection system is provided, comprising: a plurality of light circuits in a vehicle, each light circuit including a light and being associated with a corresponding unique identifier; a system controller located in the vehicle and configured to control operation of the light circuits; a plurality of wires connecting the light circuits to the system controller such that at least one wire is attached to each of the plurality of light circuits; a plurality of lighting error detectors each configured to detect a malfunctioning light from among corresponding lights in the light circuits, and configured to transmit an error message to the system controller when the malfunctioning light is detected, wherein each of the lighting error detectors transmits an error message to the system controller when the lighting error detector detects the malfunctioning light, and the error message includes the corresponding unique identifier of the malfunctioning light.

A vehicular error detection system is provided, comprising: a plurality of light circuits in a vehicle, each light circuit including a light and being associated with a corresponding unique identifier; a system controller located in the vehicle and configured to control operation of the light circuits; a plurality of wires connecting the light circuits to the system controller such that at least one wire is attached to each of the plurality of light circuits; a plurality of lighting error detectors each configured to detect a malfunctioning light from among corresponding lights in the light circuits, and configured to transmit an error message to the system controller when the malfunctioning light is detected, wherein each of the lighting error detectors transmits an error message to the system controller when the lighting error detector detects the malfunctioning light, and the error message includes the corresponding unique identifier of the malfunctioning light.

A lighting circuit turns on multiple semiconductor light sources. Multiple current sources are each coupled in series with a corresponding one from among the semiconductor light sources. A switching converter supplies a driving voltage V.sub.OUT across each of multiple series connection circuits formed of the multiple semiconductor light sources and the multiple current sources. A converter controller controls a switching transistor of the switching converter based on a relation between a voltage across one from among the multiple current sources and a reference voltage having a positive correlation with the temperature T.sub.j.