Patent ID: 6331813
Filing Date: 2001-12-18
Classification: H05B

Abstract:
An apparatus comprising:a first lighting device having a plurality of parameters, wherein the first lighting device includes:a processor, anda first motor which is used to vary a first parameter of the plurality of parameters of the first lighting device;wherein the first lighting device receives a primary signal having a frequency from a power line and the primary signal powers the first lighting device;wherein the first lighting device receives a first secondary signal from power line in response to actuation of at least one actuation device on a control device and the first secondary signal has a frequency which is different from the frequency of the primary signal;wherein the processor of the first lighting device responds to the first secondary signal by causing the position of the first motor to change and thereby changing the first parameter of the plurality of parameters of the first lighting device;wherein the first secondary signal includes an address signal;the processor of the first lighting device responds to the first secondary signal if the address signal of the first secondary signal corresponds to a first address;the processor determines a second address from the first address;the processor responds to the first secondary signal if the address signal of the first secondary signal corresponds to the second address;and wherein the processor responds by changing a parameter of the plurality of parameters of the first lighting device.