| 主权项 |
1. A method for transmitting control information from a control apparatus to an operating device for at least one light-emitting means, wherein the operating device has a first and a second supply connection,
wherein the control apparatus has an input, which is coupled to the phase conductor of an AC voltage system; wherein the first supply connection is coupled to an output of the control apparatus via a supply line; wherein the second supply connection is coupled to the neutral conductor of an AC voltage system; the method comprising: a) modulating the control information onto the supply line by means of the control apparatus during a modulation phase, wherein, at least during the modulation phase, a switchable shunt of the operating device is connected between the first and second supply connections; b) decoding the control information in a decoder of the operating device; b1) activating the demodulation by the decoder when the absolute value for the voltage at the two supply connections falls below a first predeterminable threshold value, wherein the demodulation is blocked for a first predeterminable time period, once a second predeterminable time period has elapsed, once the absolute value for the voltage at the two supply connections has fallen below the first predeterminable threshold value when the decoder has not received any valid control information in the preceding half-cycle of the voltage at the two supply connections; and c) actuating a converter of the operating device in accordance with the decoded control information. |
