Electronic ballast having timing unit correction
First Claim
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1. A method for operating a light-producing apparatus, the method comprising the steps of:
- providing an electronic ballast for powering the light-producing apparatus, the electronic ballast including an internal timing unit that includes an oscillator, the internal timing unit providing an internal timing function;
receiving, by the electronic ballast, an external signal that contains time information;
processing the time information of the external signal to correct the internal timing function of the electronic ballast, wherein the internal timing function of the electronic ballast is corrected by calculating and storing a correction value in dependence on the time information contained in the external signal, wherein operation of the oscillator is unaffected by the correction value; and
controlling the light-producing apparatus in accordance with the correction value.
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Abstract
The invention relates to an operating method and an electronic ballast (EVG) for operating a light-producing apparatus (L), for example a discharge lamp. In this case, an internal timing unit in the ballast (EVG) is corrected with the aid of time information (TM) received in external signals.
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Citations
11 Claims
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1. A method for operating a light-producing apparatus, the method comprising the steps of:
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providing an electronic ballast for powering the light-producing apparatus, the electronic ballast including an internal timing unit that includes an oscillator, the internal timing unit providing an internal timing function; receiving, by the electronic ballast, an external signal that contains time information; processing the time information of the external signal to correct the internal timing function of the electronic ballast, wherein the internal timing function of the electronic ballast is corrected by calculating and storing a correction value in dependence on the time information contained in the external signal, wherein operation of the oscillator is unaffected by the correction value; and controlling the light-producing apparatus in accordance with the correction value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification