Lighting system and method of retrieving status information of a lighting system
First Claim
1. A method of retrieving status information of a lighting system, the lighting system comprising a plurality of LED-based lighting units arranged as nodes in a linear daisy-chained network, the network having network segments connecting two subsequent nodes downstream of a controller via an upstream transceiver and a downstream transceiver of the network segment, the method comprising:
- propagating a command signal from the controller to a node of the lighting system by operating the upstream transceivers of the network segments that are upstream of the node in a transmitting mode and operating each of the downstream transceivers of the network segments that are upstream of the node in a receiving mode;
propagating a reply signal comprising the status information of the LED unit of the node from the node to the controller by operating the upstream transceivers of the network segments that are upstream of the node in a receiving mode and operating each of the downstream transceivers of the network segments upstream of the node in a transmitting mode; and
reversing an operating mode of an upstream transceiver of a network segment from operating in a transmitting mode to operating in a receiving mode only when the downstream transceiver of the network segment is operating in transmitting mode.
3 Assignments
0 Petitions
Accused Products
Abstract
A method of retrieving status information of a lighting system includes propagating a command signal from a controller to a node of the lighting system by operating upstream transceivers that are upstream of the node in a transmitting mode and operating downstream transceivers that are upstream of the node in a receiving mode; propagating a reply signal including the status information of the LED unit of the node from the node to the controller by operating the upstream transceivers that are upstream of the node in a receiving mode and operating each of the downstream transceivers upstream of the node in a transmitting mode and reversing an operating mode of an upstream transceiver of a network segment from operating in a transmitting mode to operating in a receiving mode only when the downstream transceiver is operating in transmitting mode.
-
Citations
19 Claims
-
1. A method of retrieving status information of a lighting system, the lighting system comprising a plurality of LED-based lighting units arranged as nodes in a linear daisy-chained network, the network having network segments connecting two subsequent nodes downstream of a controller via an upstream transceiver and a downstream transceiver of the network segment, the method comprising:
-
propagating a command signal from the controller to a node of the lighting system by operating the upstream transceivers of the network segments that are upstream of the node in a transmitting mode and operating each of the downstream transceivers of the network segments that are upstream of the node in a receiving mode; propagating a reply signal comprising the status information of the LED unit of the node from the node to the controller by operating the upstream transceivers of the network segments that are upstream of the node in a receiving mode and operating each of the downstream transceivers of the network segments upstream of the node in a transmitting mode; and reversing an operating mode of an upstream transceiver of a network segment from operating in a transmitting mode to operating in a receiving mode only when the downstream transceiver of the network segment is operating in transmitting mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A lighting system comprising
a plurality of LED-based lighting units arranged as nodes in a linear daisy-chained network; -
a controller for providing a command signal to any of the nodes in the daisy-chained network; and a plurality of network segments connecting the controller and nodes, each network segment comprising an upstream transceiver and a downstream transceiver;
the lighting units further comprising a control unit for controlling an operating state of the upstream transceiver and downstream transceiver that are connected to the lighting unit, wherein the controller and the control units of the lighting units are arranged to;propagate the command signal from the controller to a node of the lighting system by operating the upstream transceivers of the network segments that are upstream of the node in a transmitting mode and operating each of the downstream transceivers of the network segments that are upstream of the node in a receiving mode; propagate a reply signal comprising status information of the LED unit of the node from the node to the controller by operating the upstream transceivers of the network segments that are upstream of the node in a receiving mode and operating each of the downstream transceivers of the network segments upstream of the node in a transmitting mode; and reverse an operating mode of an upstream transceiver of a network segment from operating in a transmitting mode to operating in a receiving mode only when the downstream transceiver of the network segment is operating in transmitting mode.
-
-
16. A linear daisy-chained lighting network comprising:
-
a plurality of LED-based lighting units arranged as nodes in the network; a controller for providing a command signal to any of the nodes in the network; and a plurality of network segments connecting the controller and nodes, each network segment comprising an upstream transceiver and a downstream transceiver;
the lighting units further comprising a control unit for controlling an operating state of the upstream transceiver and downstream transceiver that are connected to the lighting unit, wherein the controller and the control units of the lighting units are arranged to;propagate a command signal from the controller to a node of the lighting system by operating the upstream transceivers of the network segments that are upstream of the node in a transmitting mode and operating each of the downstream transceivers of the network segments that are upstream of the node in a receiving mode; propagate a reply signal comprising the status information of the LED unit of the node from the node to the controller by operating the upstream transceivers of the network segments that are upstream of the node in a receiving mode and operating each of the downstream transceivers of the network segments upstream of the node in a transmitting mode; and reverse an operating mode of an upstream transceiver of a network segment from operating in a transmitting mode to operating in a receiving mode only when the downstream transceiver of the network segment is operating in transmitting mode. - View Dependent Claims (17, 18)
-
-
19. An LED based lighting unit for operating as a node in a daisy-chained lighting network, the lighting unit comprising:
-
one or more LEDs; a control unit for controlling an operating characteristic of the one or more LEDs; a first terminal for connecting a downstream transceiver of a first network segment of the network; and a second terminal for connecting an upstream transceiver of a second network segment of the network, wherein the control unit is arranged to, in use; operate the downstream transceiver in a receiving mode to receive a command signal from the first network segment; generate a reply signal comprising status information of at least one of the one or more LEDs; operate the upstream transceiver in a transmitting mode to propagate the command signal to the second network segment; and reverse an operating state of the upstream transceiver of the second from operating in a transmitting mode to operating in a receiving mode only when a further transceiver of the second network segment is operating in transmitting mode.
-
Specification