Method and apparatus for repeating illumination information on a daisy chain bus structure
First Claim
1. A data communication method for transmitting a data packet comprising data bytes in a daisy chained bus structure of a LED illumination system, the LED illumination system comprising at least one group of nodes, the at least one group comprising a plurality of nodes including a last node, the method comprising:
- the plurality of nodes of the at least one group, except the last node of the group, retransmitting the data packet without removing any data bytes from the incoming data packet; and
the last node in the group removing the first byte of the data packet before retransmission, wherein each of the nodes in the group uses said first byte for its settings.
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Abstract
A data communication method is described for transmitting a data packet comprising data bytes in a daisy chained bus structure of a LED illumination system. The method comprises: the nodes of a group, except the last node of the group retransmitting the data packet without removing a first data byte from the incoming data packet; and the last node in the group removing the first byte from the data packet before retransmission. The invention further comprises a communication node, illumination assembly and bus structure implementing the method according to the invention.
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Citations
16 Claims
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1. A data communication method for transmitting a data packet comprising data bytes in a daisy chained bus structure of a LED illumination system, the LED illumination system comprising at least one group of nodes, the at least one group comprising a plurality of nodes including a last node, the method comprising:
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the plurality of nodes of the at least one group, except the last node of the group, retransmitting the data packet without removing any data bytes from the incoming data packet; and the last node in the group removing the first byte of the data packet before retransmission, wherein each of the nodes in the group uses said first byte for its settings. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A group of communication nodes for a DMX communication network, the nodes each comprising:
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an input for receiving a data packet comprising data bytes, and an output for retransmitting the data packet to a following one of the nodes of the group, wherein the nodes of the group, except the last node of the group are arranged for retransmitting the data packet without removal of any data bytes from of the incoming data packet, and the last node in the group removing the first byte of the data packet before retransmission, wherein each of the nodes in the group uses said first byte for its settings. - View Dependent Claims (15)
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16. A bus structure comprising:
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a plurality of nodes forming a group, each node in the plurality of nodes comprising; an input for receiving a data packet comprising data bytes, and an output for retransmitting the data packet to a following node, and individual nodes outside of the group are arranged for removing the first data byte of the data packet before retransmission, wherein the nodes in the group, except the last one, exhibit a different behavior than the individual nodes in that they are arranged for retransmitting the incoming data packet without removal of any data bytes from the data packet and the last node in the group removes said first byte of the data packet before retransmission, wherein each of the nodes in the group uses said first byte for its settings.
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Specification