An automated roadway marker system that illuminates and provides warning and lane demarcation under poor visibility conditions utilizing IR beam-break transceivers where no deployment considerations need to be made for the first in a sequence, because each marker operationally establishes its linkage condition in an intermittently activated asynchronous pseudo-network. The devices are designed for extremely low power consumption, so that solar energy can be utilized as a power source. The markers can additionally be linked through radio frequency signals, and to provide a warning to mobile and stationary radio frequency receivers. Additionally, the markers can be illuminated via transmissions from mobile and stationary transmitters.

A power supply, includes: a hot node coupled to a hot wire of an AC source, and a ground node coupled to an earth ground, where a neutral wire of the source is not present; a storage component, coupled to a return node and in series with a current limiter, where the current limiter enables the storage component to charge to a voltage while limiting leakage current to a prescribed value; a low voltage power supply including a buck-boost regulator, coupled to the storage component and to a return node that provides a reference voltage, where the low voltage power supply receives the voltage and generates an output voltage on an output node that is referenced to the reference voltage; and a wireless transceiver that employs the output voltage to transmit and receive messages from one or more corresponding wireless devices.

A power supply, includes: a hot node coupled to a hot wire of an AC source, and a ground node coupled to an earth ground, where a neutral wire of the source is not present; a storage component, coupled to a return node and in series with a current limiter, where the current limiter enables the storage component to charge to a voltage while limiting leakage current to a prescribed value; a low voltage power supply including a buck-boost regulator, coupled to the storage component and to a return node that provides a reference voltage, where the low voltage power supply receives the voltage and generates an output voltage on an output node that is referenced to the reference voltage; and a wireless transceiver that employs the output voltage to transmit and receive messages from one or more corresponding wireless devices.

The present disclosure is for a light-emitting diode light string control system, which comprises: a switching unit having a power input end, a power output end connected to the light string, and a controlled end. A control unit is connected to the controlled end of the switching unit. A second power-generating unit is also connected to the light-emitting diode light string. The light-emitting control command sent by the control unit is in a carrier wave mode to realize brightness variation of the light string, which saves costs and simplifies the control circuit. A short-circuit protection unit is employed to provide fast and reliable response in real time.

The present disclosure is for a light-emitting diode light string control system, which comprises: a switching unit having a power input end, a power output end connected to the light string, and a controlled end. A control unit is connected to the controlled end of the switching unit. A second power-generating unit is also connected to the light-emitting diode light string. The light-emitting control command sent by the control unit is in a carrier wave mode to realize brightness variation of the light string, which saves costs and simplifies the control circuit. A short-circuit protection unit is employed to provide fast and reliable response in real time.

A method (300, 600) of augmenting an illumination perception by one or more wearers of respective head-mountable computing devices (100) each including at least one transparent display module (106) is disclosed. The method comprises determining (320) a desired light condition for said wearer in a space (10), determining an actual light condition (330) for said wearer in said space; and displaying a semi-transparent image on the at least one transparent display module to filter the light passing through the at least one display module in case the actual light condition differs from the desired light condition. In embodiments, the user preferences may be used to perform a global optimization of the light output by one or more (distributed) light sources of a lighting system. Computer program products comprising computer program code for implementing such a method when executed on a suitable processor, a head-mountable computing device and a lighting system are also disclosed.

Disclosed are a lighting system and a method for registering a lighting device. The embodiments of the present invention comprise: a lighting device which is provided with a short-range communication module and comprises a plurality of light-emitting units; a lighting registration device which is provided with a short-range communication module and an IR communication module and registers the lighting device on the basis of the light-emitting patterns of the light-emitting units; and a lighting switch which is provided with a short-range communication module, binds with the lighting device by receiving, from the lighting registration device, an ID corresponding to the light-emitting patterns of the light-emitting units, and controls the operation of the lighting device. Further, when power is supplied to the lighting device, the lighting registration device recognizes the light-emitting patterns of the light-emitting units and registers the lighting device with an ID corresponding to the recognized light-emitting patterns.

A cap with an illuminated plastic bill assembly. An illumination assembly provides power and controls for a light source that is used to illuminate the edge or surface of a plastic cap bill. The light passes into and through the plastic cap bill, causing the plastic cap bill to light up and glow in a variety of ways. The plastic bill can also be further decorated in various ways to allow for unique designs to light up and stand out. A cap crown portion provides the foundation to which the illumination assembly and plastic cap bill can be connected to through connection means. All of the listed components combined provides an assembly for a cap with an illuminated plastic bill.

A lighting device (10) for operating from a main power supply or from an auxiliary power supply (25), in co-operation with a switching device transmitting a wireless control signal indicative of a power condition of the main power supply. The lighting device (10) accommodates in a single housing (11) a light emitting module (20), the auxiliary power supply (25) and a control circuit (30) for monitoring the wireless control signal and a power condition of the main power supply at the lighting device (10). The control circuit (30) is to operate the lighting device from the auxiliary power supply if both the monitored power condition and the control signal indicate absence of power, and is to deactivate the powering from the auxiliary power supply (25) if the monitoring reveals presence of power of the main power supply.

A lighting device (10) for operating from a main power supply or from an auxiliary power supply (25), in co-operation with a switching device transmitting a wireless control signal indicative of a power condition of the main power supply. The lighting device (10) accommodates in a single housing (11) a light emitting module (20), the auxiliary power supply (25) and a control circuit (30) for monitoring the wireless control signal and a power condition of the main power supply at the lighting device (10). The control circuit (30) is to operate the lighting device from the auxiliary power supply if both the monitored power condition and the control signal indicate absence of power, and is to deactivate the powering from the auxiliary power supply (25) if the monitoring reveals presence of power of the main power supply.