Abstract: Methods for distinguishing devices (1, 2) receive position information from position sensors (13, 23) defining positions of the devices (1, 2), and receive direction information from direction sensors (14, 24) defining directions of the devices (1, 2), and analyze the direction information. The devices (1, 2) can be distinguished from each other, even in case they are located closer to each other than the accuracies of their position sensors (13, 23). First devices (1) comprise first drivers (11) for driving first loads (15), and first controllers (12) for controlling the first drivers (11) and for receiving first position signals from first position sensors (13) and for receiving first direction signals from first direction sensors (14). The first direction sensors (14) may comprise first light detectors (16).

Abstract: A controller for controlling a lighting device of a people transportation object is disclosed. The people transportation object is configured to traverse a plurality of locations. The controller comprises: a receiver configured to obtain location information indicative of a current location, an upcoming location and/or a destination location of the people transportation object, and a processor configured to control the lighting device such that the light output of the lighting device comprises an embedded code indicative of the current location, the upcoming location and/or the destination location of the people transportation object.

Abstract: Methods for distinguishing devices (1, 2) receive position information from position sensors (13, 23) defining positions of the devices (1, 2), and receive direction information from direction sensors (14, 24) defining directions of the devices (1, 2), and analyze the direction information. The devices (1, 2) can be distinguished from each other, even in case they are located closer to each other than the accuracies of their position sensors (13, 23). First devices (1) comprise first drivers (11) for driving first loads (15), and first controllers (12) for controlling the first drivers (11) and for receiving first position signals from first position sensors (13) and for receiving first direction signals from first direction sensors (14). The first direction sensors (14) may comprise first light detectors (16).

Abstract: Methods for distinguishing devices (1, 2) receive position information from position sensors (13, 23) defining positions of the devices (1, 2), and receive direction information from direction sensors (14, 24) defining directions of the devices (1, 2), and analyze the direction information. The devices (1, 2) can be distinguished from each other, even in case they are located closer to each other than the accuracies of their position sensors (13, 23). First devices (1) comprise first drivers (11) for driving first loads (15), and first controllers (12) for controlling the first drivers (11) and for receiving first position signals from first position sensors (13) and for receiving first direction signals from first direction sensors (14). The first direction sensors (14) may comprise first light detectors (16).

Abstract: A signal processing module for use with a receiver for receiving echoes of an emitted signal. The signal processing module comprises sensing logic for sensing presence of a being or object in a space using echoes of the signal as reflected from the being or object, wherein the echoes are received with an associated frequency band. The signal processing module further comprises control logic for detecting disturbance having potential to compromise said sensing, wherein the signal processing module is configured to detect this disturbance by listening for an unwanted signal in a region of the spectrum outside the frequency band of the echoes, and to adapt the sensing in dependence on the detected disturbance.

Abstract: Methods for distinguishing devices (1, 2) receive position information from position sensors (13, 23) defining positions of the devices (1, 2), and receive direction information from direction sensors (14, 24) defining directions of the devices (1, 2), and analyze the direction information. The devices (1, 2) can be distinguished from each other, even in case they are located closer to each other than the accuracies of their position sensors (13, 23). First devices (1) comprise first drivers (11) for driving first loads (15), and first controllers (12) for controlling the first drivers (11) and for receiving first position signals from first position sensors (13) and for receiving first direction signals from first direction sensors (14). The first direction sensors (14) may comprise first light detectors (16).

Abstract: The present invention relates to a method for controlling a lighting device in a daylight harvesting system. When a user tampers with a sensor, in order to decrease the light level light level measured and therefore increase the light intensity of the lighting device, the tampering is detected. Based on this tamper detection the light intensity of the lighting device is controlled based on a set value (e.g. 70% dimming).

Abstract: An apparatus comprises a first light sensor configured with a first field of view; and a second light sensor configured with a second, narrower field of view contained within the first field of view. The first and second light sensors may be arranged to detect light reflected from an illuminated surface, wherein the first and second field of view encompass light from an electric lighting device reflected from said surface and additional light reflected from said surface, e.g. natural light; but the second light sensor is concentrated on a region on said surface so as to exclude glare from objects outside said region, whereas the first field of view extends beyond said region. An illumination level of the environment in which the apparatus is installed may be adjusted to compensate for a change in the additional light based on information distinguishing between the two sensors.

Abstract: A controller comprising: presence detection logic, calibration logic, and an input for receiving a reading from a light sensor representing a sensed light level. The presence detection logic is for detecting presence events based on a presence sensor, and is configured to indicate a set-point to operate at least one lighting device in dependence on a positive detection of presence. The calibration logic is for performing a calibration operation, which is performed by causing a light output of the lighting device to change between a first, lower level and a second, higher level, and by and calibrating the set-point based on the reading from the light sensor under influence of the first and second levels. The calibration logic is configured to trigger this calibration operation in response to the positive detection of presence.

Abstract: A passive infrared sensor system comprising: a direct current (DC) voltage source supplying a DC voltage; a passive infrared sensor supplied with the DC voltage, the passive infrared sensor comprising at least one sensor element; an alternating current (AC) voltage source supplying an AC voltage, the AC voltage source arranged to induce an alternating current to flow through said at least one sensor element; an amplifier arranged to amplify an output signal that is output from the passive infrared sensor to generate an amplified output signal; and a filter arranged to filter the amplified output signal to provide an output of the passive infrared sensor system, wherein the filter is configured to filter a frequency of the AC voltage.

Abstract: An apparatus comprises a first light sensor configured with a first field of view; and a second light sensor configured with a second, narrower field of view contained within the first field of view. The first and second light sensors may be arranged to detect light reflected from an illuminated surface, wherein the first and second field of view encompass light from an electric lighting device reflected from said surface and additional light reflected from said surface, e.g. natural light; but the second light sensor is concentrated on a region on said surface so as to exclude glare from objects outside said region, whereas the first field of view extends beyond said region. An illumination level of the environment in which the apparatus is installed may be adjusted to compensate for a change in the additional light based on information distinguishing between the two sensors.

Abstract: A controller for use with a sensing apparatus that comprises a receiver for receiving echoes of an emitted signal. The controller comprises a control module for sensing a being in a space based on the echoes, configured to provide a function of the space in dependence on the sensing; and a timer configured to prevent a change in state of the function for a period after a result of the sensing. The control module is further configured to dynamically measure an estimate of disturbance received by the receiver and adapt the period based on the estimated disturbance.

Abstract: A signal processing module for use with a receiver for receiving echoes of an emitted signal. The signal processing module comprises sensing logic for sensing presence of a being or object in a space using echoes of the signal as reflected from the being or object, wherein the echoes are received with an associated frequency band. The signal processing module further comprises control logic for detecting disturbance having potential to compromise said sensing, wherein the signal processing module is configured to detect this disturbance by listening for an unwanted signal in a region of the spectrum outside the frequency band of the echoes, and to adapt the sensing in dependence on the detected disturbance.

Abstract: A controller comprising: presence detection logic, calibration logic, and an input for receiving a reading from a light sensor representing a sensed light level. The presence detection logic is for detecting presence events based on a presence sensor, and is configured to indicate a set-point to operate at least one lighting device in dependence on a positive detection of presence. The calibration logic is for performing a calibration operation, which is performed by causing a light output of the lighting device to change between a first, lower level and a second, higher level, and by and calibrating the set-point based on the reading from the light sensor under influence of the first and second levels. The calibration logic is configured to trigger this calibration operation in response to the positive detection of presence.

Abstract: The present invention relates to a method for controlling a lighting device in a daylight harvesting system. When a user tampers with a sensor, in order to decrease the light level light level measured and therefore increase the light intensity of the lighting device, the tampering is detected. Based on this tamper detection the light intensity of the lighting device is controlled based on a set value (e.g. 70% dimming).

Abstract: A method of determining a disk type of an optical disk is provided to comprise steps of: using a first light path for forming an incident beam; moving an objective lens system corresponding to the first light path from a start position towards the optical disk; receiving a sensor output signal during the movement of the objective lens system, wherein the sensor output signal includes a central aperture signal; determining the disk type of the optical disk according to the central aperture signal.

Abstract: An optical disk drive for determining a disk characteristic of an optical disk comprising an information layer comprising a substantially circular track is described. The optical disk drive has an optical pickup unit arranged to generate a beam, direct the beam to the optical disk for forming an incident beam, sense a reflected beam produced by the optical disk with a sensor upon receiving the incident beam with the sensor, produce a sensor output signal from sensing the reflected beam; a disk receiving device arranged to receive the optical disk; a motor arranged to provide a transition of the disk receiving device from a first mode to a second mode in at least one transition phase; and a controller arranged to receive the sensor output signal during at least one part of the at least one transition phase and perform at least part of determining the disk characteristic from at least the sensor output signal received during the at least one part of the at least one transition phase.

Abstract: An optical disk drive and a method for determining a disk type are described. The optical disk drive may be arranged to receive a radial error signal while an incident beam is focused onto the optical disk and before tracking the track, to analyze the radial error signal for detecting whether a wobble signal is present, indicating whether the track is wobbled, and to derive a disk type from the wobble signal, if present. The optical disk drive may additionally or alternatively be arranged to receive a central aperture signal while the incident beam is focused onto the optical disk and before tracking a track including a sequence of embossed pits, to analyze the signal amplitude of the central aperture signal, and to determine the disk type from at least a first variation of the signal amplitude of the central aperture signal as a function of time.

Abstract: An optical disk drive for determining a disk type associated with a substrate thickness of an optical disk comprising a substrate is provided to comprise a source to generate a beam, an optical arrangement arranged to direct the beam to the optical disk for forming an incident beam, a sensor arranged to sense a reflected beam and to produce a sensor output signal, a focus system comprising an objective lens system and a focus controller, wherein the objective lens system is arranged to focus the incident beam into a spot, and the focus controller is arranged to generate a focus control signal to drive and position the objective lens system; and a controller arranged to cooperate with the focus controller for moving the objective lens system, to receive the central aperture signal during the movement of the objective lens system, to analyze the central aperture signal for determining the focus actuator position, and to determine the disk type associated with the substrate thickness.

Abstract: An optical disk drive for determining a disk characteristic of an optical disk comprising an information layer comprising a substantially circular track is described. The optical disk drive has an optical pickup unit arranged to generate a beam, direct the beam to the optical disk for forming an incident beam, sense a reflected beam produced by the optical disk with a sensor upon receiving the incident beam with the sensor, produce a sensor output signal from sensing the reflected beam; a disk receiving device arranged to receive the optical disk; a motor arranged to provide a transition of the disk receiving device from a first mode to a second mode in at least one transition phase; and a controller arranged to receive the sensor output signal during at least one part of the at least one transition phase and perform at least part of determining the disk characteristic from at least the sensor output signal received during the at least one part of the at least one transition phase.