Abstract:
Controlling a lighting system, which comprises a controller (2, 10), lighting units (6), and a sensing device. Each lighting unit comprises a lighting source (12) and a modulated light source (14). A single light source may be used to function as both the lighting source and the modulated light source. Each modulated light source emits uniquely modulated light. A radiation pattern of each modulated light source coincides substantially with a radiation pattern of a lighting source of the same lighting unit. The sensing device is suitable to sense modulated light in a viewing area. Lighting units from which the sensing device senses modulated light are identified from the modulation of that modulated light. The sensing device measures the intensity of the modulated light from the identified lighting unit. The lighting sources are controlled dependent on control data which comprises measuring values of measured light intensities.
Abstract:
The CATV system according to the invention comprises at least one primary station (2) and a plurality of secondary stations (4). The primary station (2) and the secondary stations (4) are interconnected via a CATV network (6) comprising a plurality of nodes (8, 10, 12, 14). At least part of these nodes (8, 10, 12, 14) are redirection nodes (30) comprising redirection means (32) for redirecting (routing/switching) downstream data signals. In this way, it is no longer necessary to broadcast the data signals to all the nodes (8, 10, 12, 14) and secondary stations (4) in the CATV system. Instead, the data signals can be efficiently redirected to their destination and the available downstream bandwidth of the CATV network (6) can be used more efficiently.
Abstract:
The invention relates to copying light conditions from one location and pasting into or providing similar light conditions to another location in a lighting system. A light detector (20) is provided which comprises a first sensor (50) configured to receive a first light directly from a first light source (14) and measure first light attributes of the first light, and a second sensor (52) configured to receive the first light influenced by reflections from surfaces (24) and measure second light attributes of the first light. Processing means (16) are adapted to process perceivable light attributes at the first location (22, 24) from the first light attributes and the second light attributes, and in conjunction with the specification of the second light source (15) to control the second light source (15) to provide the second light having light attributes at the second location (23, 25) that substantially match the perceivable light attributes at the first location (22, 24), whereby the illumination at the first location (22, 24) may be copied and pasted to the second location (23, 25).
Abstract:
The invention relates to copying light conditions from one location and pasting into or providing similar light conditions to another location in a lighting system. A light detector (20) is provided which comprises a first sensor (50) configured to receive a first light directly from a first light source (14) and measure first light attributes of the first light, and a second sensor (52) configured to receive the first light influenced by reflections from surfaces (24) and measure second light attributes of the first light. Processing means (16) are adapted to process perceivable light attributes at the first location (22, 24) from the first light attributes and the second light attributes, and in conjunction with the specification of the second light source (15) to control the second light source (15) to provide the second light having light attributes at the second location (23, 25) that substantially match the perceivable light attributes at the first location (22, 24), whereby the illumination at the first location (22, 24) may be copied and pasted to the second location (23, 25).
Abstract:
A system (100) includes a first controllable light source (310) configured to provide a first light for illuminating a first location, and a second controllable light source (320) configured to provide a second light for illuminating a second location. A detector (330) is configured to receive the first light and measure first light attributes of the first light. A memory (140) is provided for storing a database that includes specification of the second controllable light source (320), and/or operating parameters of first controllable light source (310) for providing the first light. A processor (120) receives the first light attributes, and in conjunction with the specification of second controllable light source (320), controls the second light source (320) to provide the second light having second light attributes at the second location that substantially match the first light attributes of the first light illuminating the first location.
Abstract:
A system (100) includes a first controllable light source (310) configured to provide a first light for illuminating a first location, and a second controllable light source (320) configured to provide a second light for illuminating a second location. A detector (330) is configured to receive the first light and measure first light attributes of the first light. A memory (140) is provided for storing a database that includes specification of the second controllable light source (320), and/or operating parameters of first controllable light source (310) for providing the first light. A processor (120) receives the first light attributes, and in conjunction with the specification of second controllable light source (320), controls the second light source (320) to provide the second light having second light attributes at the second location that substantially match the first light attributes of the first light illuminating the first location.
Abstract:
Controlling a lighting system, which comprises a controller (2, 10), lighting units (6), and a sensing device. Each lighting unit comprises a lighting source (12) and a modulated light source (14). A single light source may be used to function as both the lighting source and the modulated light source. Each modulated light source emits uniquely modulated light. A radiation pattern of each modulated light source coincides substantially with a radiation pattern of a lighting source of the same lighting unit. The sensing device is suitable to sense modulated light in a viewing area. Lighting units from which the sensing device senses modulated light are identified from the modulation of that modulated light. The sensing device measures the intensity of the modulated light from the identified lighting unit. The lighting sources are controlled dependent on control data which comprises measuring values of measured light intensities.
Abstract:
The CATV system according to the invention comprises at least one primary station (2) and a plurality of secondary stations (4). The primary station (2) and the secondary stations (4) are interconnected via a hierarchical CATV network (6) comprising a plurality of nodes (8, 10, 12, 14). At least part of these nodes (8, 10, 12, 14) are redirection nodes (30) comprising redirection means (32) for redirecting data signals. The redirection means (32) may comprise a router and/or a switch. The CATV network (6) comprises, in addition to prior art CATV networks, horizontal interconnections (20) between redirection nodes (30) which are part of a same hierarchical level and/or diagonal interconnections (22) between redirection nodes (30) which are part of different hierarchical levels and different branches. These additional interconnections (20, 22) can be used for load balancing and for self-healing of the CATV network (6).