Abstract: The invention relates to control system configured for controlling at least one controllable device. The device has been assigned a corresponding identifier and is configured for transmitting an identification signal comprising the identifier of the device. The control system comprises a display for displaying a control item configured for controlling the controllable device. The control system also comprises a receiver configured for wirelessly receiving the identification signal comprising the identifier. The control system is configured for assigning a position of the control item on the display to the device identified by means of said received identifier.

Abstract: A method for driving a lamp (2) comprises the steps of: generating a lamp current (ICONST) having a constant magnitude; defining a commutation period having a duration TCOMM; defining a time base of original commutation moments, having fixed mutual intervals of 0.5*TCOMM; receiving data to be embedded in the light output; commutating the lamp current at commutation moments; wherein individual commutations are time-modulated in order to encode said received data. Preferably, a commutation moment is: either equal to an original commutation moment if there are no data to embed; or advanced over a modulation distance (?) with respect to the corresponding original commutation moment in order to encode data having a first value (“0”); or delayed over said modulation distance (?) with respect to the corresponding original commutation moment in order to encode data having a second value (“1”).

Abstract: The invention relates to an illumination device connectable to an AC voltage source for applying an alternating voltage during a series of time intervals. The illumination device comprises at least a first light source and a second light source, arranged to be connected in series to the AC voltage source, to generate a luminance output in response to the alternating voltage. Selection means are provided configured for selectively applying the alternating voltage over the first light source or the first and second light source. A controller is provided for controlling the selection means in response to a data signal comprising data symbols such that one or more of the data symbols are contained in said luminance output. The invention also relates to a method of embedding one or more data symbols in the luminance output of such an illumination device, an optical receiver and an illumination system.

Abstract: A direction controllable lighting unit (10) and use thereof in a lighting system (40) are described. A lighting unit (10) has means (16) for directing the light emission (22) into different directions. A plurality of light sources (20a, 20b) are mounted on a common body (14). The light sources (20a, 20b) are disposed to emit directed light into different directions. The light is modulated to contain identification codes ‘A’, ‘B’, which are unique. Within the lighting system (40), an optical sensor (46) is arranged in a region illuminated by the lighting unit (10). The optical sensor (46) demodulates the received light according to the identification code. A control unit (44) is connected to the optical sensor (46) and to the lighting unit (10) to control the direction of the lighting unit (10) based on information from the optical sensor (46).

Abstract: A method for driving a lamp (2) comprises the steps of: generating a lamp current (ICONST) having a constant magnitude; defining a commutation period having a duration TCOMM; defining a time base of original commutation moments, having fixed mutual intervals of 0.5*TCOMM; receiving data to be embedded in the light output; commutating the lamp current at commutation moments; wherein individual commutations are time-modulated in order to encode said received data. Preferably, a commutation moment is: either equal to an original commutation moment if there are no data to embed; or advanced over a modulation distance (?) with respect to the corresponding original commutation moment in order to encode data having a first value (“0”); or delayed over said modulation distance (?) with respect to the corresponding original commutation moment in order to encode data having a second value (“1”).

Abstract: The invention relates to control system configured for controlling at least one controllable device. The device has been assigned a corresponding identifier and is configured for transmitting an identification signal comprising the identifier of the device. The control system comprises a display for displaying a control item configured for controlling the controllable device. The control system also comprises a receiver configured for wirelessly receiving the identification signal comprising the identifier. The control system is configured for assigning a position of the control item on the display to the device identified by means of said received identifier.

Abstract: The invention relates to an illumination device connectable to an AC voltage source for applying an alternating voltage during a series of time intervals. The illumination device comprises at least a first light source and a second light source, arranged to be connected in series to the AC voltage source, to generate a luminance output in response to the alternating voltage. Selection means are provided configured for selectively applying the alternating voltage over the first light source or the first and second light source. A controller is provided for controlling the selection means in response to a data signal comprising data symbols such that one or more of the data symbols are contained in said luminance output. The invention also relates to a method of embedding one or more data symbols in the luminance output of such an illumination device, an optical receiver and an illumination system.

Abstract: A vehicle position measurement system (100) and method to determine the (relative) position of a vehicle (110) and an object (120) are proposed. The system comprises at least two light sources (131, 132) capable of emitting light and positioned at a predetermined distance (140) to each other. Furthermore the system comprises at least one detector (150/151, 152) capable of measuring the light emitted. The light emitted by the light sources comprises synchronized light source identification codes. The detector is arranged to determine the position of the vehicle (110) and object (120) on the basis of a phase-difference measurement between the light originating from the individual light sources (131, 132) and a comparison phase. The vehicle (110) may comprise the at least two light sources (131, 132) and the detector (151, 152), while the phase-difference is measured between light reflected from the object (120) and the comparison phase.

Abstract: Proposed is an object localization method, system and user interface device for locating a (misplaced) object (10) in an area of a construction (1). The method comprises the steps of (i) identifying the object (10), (ii) providing an illumination device (20) comprising a plurality of light sources (30) modulated to emit light comprising light source identification codes (35), (iii) illuminating the tag (11) with light emitted by the light sources (30), (iv) requesting the tag (11) to measure the illumination and to identify the light sources (30) illuminating the tag by their light source identification codes (35), (v) transmitting object location data from the tag (11) relating to the measured illumination and light source identification codes (35) to a master controller (25) arranged to control the illumination device (20), (vi) providing a feedback signal related to the object (10) using the master controller (25).

Abstract: A direction controllable lighting unit (10) and use thereof in a lighting system (40) are described. A lighting unit (10) has means (16) for directing the light emission (22) into different directions. A plurality of light sources (20a, 20b) are mounted on a common body (14). The light sources (20a, 20b) are disposed to emit directed light into different directions. The light is modulated to contain identification codes ‘A’, ‘B’, which are unique. Within the lighting system (40), an optical sensor (46) is arranged in a region illuminated by the lighting unit (10). The optical sensor (46) demodulates the received light according to the identification code. A control unit (44) is connected to the optical sensor (46) and to the lighting unit (10) to control the direction of the lighting unit (10) based on information from the optical sensor (46).