METHOD OF FORMING A SEQUENCING SYSTEM AND STRUCTURE THEREFOR
First Claim
Patent Images
1. A sequencing lighting system comprising:
- at least two integrated circuits, wherein each integrated circuit comprises a control input and a sequence output;
a control unit coupled to a first integrated circuit of the at least two integrated circuits;
an intermediate communication signal coupling the sequence output of the first integrated circuit to the control input of a second integrated circuit of the at least two integrated circuits;
a diagnostic circuit contained within each integrated circuit, wherein the diagnostic circuit detects an open circuit condition and produces an open circuit signal.
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Abstract
In one embodiment, a sequencing system includes a plurality of integrated circuits connected in a daisy chain arrangement, where each integrated circuit has an LED load connection. The system includes a diagnostic circuit which signals to the control unit that an open circuit condition has been detected, thereby turning off all LED loads.
9 Citations
17 Claims
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1. A sequencing lighting system comprising:
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at least two integrated circuits, wherein each integrated circuit comprises a control input and a sequence output; a control unit coupled to a first integrated circuit of the at least two integrated circuits; an intermediate communication signal coupling the sequence output of the first integrated circuit to the control input of a second integrated circuit of the at least two integrated circuits; a diagnostic circuit contained within each integrated circuit, wherein the diagnostic circuit detects an open circuit condition and produces an open circuit signal. - View Dependent Claims (2, 3, 4, 5, 6, 11)
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7. An open circuit detection system comprising:
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at least two integrated circuits, wherein each integrated circuit comprises a control input and a sequence output; a control unit coupled to a first integrated circuit of the at least two integrated circuits; an intermediate communication signal coupling the sequence output of the first integrated circuit to the control input of a second integrated circuit of the at least two integrated circuits; a diagnostic circuit contained within each integrated circuit, wherein the diagnostic circuit detects an open circuit condition and produces an open circuit signal. - View Dependent Claims (8, 9, 10)
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12. A method for forming an open circuit detection system comprising:
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providing at least two integrated circuits, wherein each integrated circuit comprises a control input and a sequence output; providing a control unit coupled to a first integrated circuit of the at least two integrated circuits; providing an intermediate communication signal coupling the sequence output of the first integrated circuit to the control input of a second integrated circuit of the at least two integrated circuits; providing a diagnostic circuit contained within each integrated circuit, wherein the diagnostic circuit detects an open circuit condition and produces an open circuit signal. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification