Method for determining a connection order of nodes on a powered audio bus
First Claim
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1. A method for determining a connection order of at least two nodes on a powered audio bus, the method comprising the steps of:
- providing a powered audio bus;
providing nodes connected to said powered audio bus, each of the nodes comprising;
a node processing unit and a node memory, the node memory being arranged to store at least a node identifier;
a node receiver and a node transmitter arranged to receive and transmit communication on said powered audio bus;
a bus power monitoring unit;
a utility unit arranged to provide a utility function of said node, the utility unit of at least one of the nodes comprising at least one loudspeaker and at least one amplifier arranged to drive said loudspeaker based on control information and audio information received from said powered audio bus by said node receiver; and
a power converter arranged to convert power from said powered audio bus to supply power to at least partly the node processing unit, the node receiver, the node transmitter and the utility unit;
providing a bus driver connected to said powered audio bus at a bus driver portion of said powered audio bus, the bus driver being arranged to feed control information and audio information into the powered audio bus, the bus driver comprising a driver processing unit and a driver memory, the driver memory being arranged to store at least said node identifiers for said nodes;
providing a bus power supply connected to said powered audio bus at said bus driver portion of said powered audio bus, the bus power supply being arranged to feed power into the powered audio bus;
arranging for a subset of the nodes to draw power from said bus power supply via said powered audio bus;
using said bus power monitoring units of said subset to determine a farthest node as one node of said subset which is connected to said powered audio bus farther away from said bus driver than any other node of said subset;
using said node transmitter and node receiver of said determined farthest node to communicate a node identifier with said bus driver so that a node identifier for said determined farthest node is stored in said node memory and said controller memory.
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Abstract
A method for determining a connection order of nodes on a powered audio bus by having the nodes draw power from the powered audio bus, measure the power consumed downstream, determine who is the last node on the bus, and transmit an identifier of the last node to the bus driver.
18 Citations
20 Claims
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1. A method for determining a connection order of at least two nodes on a powered audio bus, the method comprising the steps of:
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providing a powered audio bus; providing nodes connected to said powered audio bus, each of the nodes comprising; a node processing unit and a node memory, the node memory being arranged to store at least a node identifier; a node receiver and a node transmitter arranged to receive and transmit communication on said powered audio bus; a bus power monitoring unit; a utility unit arranged to provide a utility function of said node, the utility unit of at least one of the nodes comprising at least one loudspeaker and at least one amplifier arranged to drive said loudspeaker based on control information and audio information received from said powered audio bus by said node receiver; and a power converter arranged to convert power from said powered audio bus to supply power to at least partly the node processing unit, the node receiver, the node transmitter and the utility unit; providing a bus driver connected to said powered audio bus at a bus driver portion of said powered audio bus, the bus driver being arranged to feed control information and audio information into the powered audio bus, the bus driver comprising a driver processing unit and a driver memory, the driver memory being arranged to store at least said node identifiers for said nodes; providing a bus power supply connected to said powered audio bus at said bus driver portion of said powered audio bus, the bus power supply being arranged to feed power into the powered audio bus; arranging for a subset of the nodes to draw power from said bus power supply via said powered audio bus; using said bus power monitoring units of said subset to determine a farthest node as one node of said subset which is connected to said powered audio bus farther away from said bus driver than any other node of said subset; using said node transmitter and node receiver of said determined farthest node to communicate a node identifier with said bus driver so that a node identifier for said determined farthest node is stored in said node memory and said controller memory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A loudspeaker system comprising
a powered audio bus; -
nodes connected to the powered audio bus, each of the nodes comprising; a node processing unit and a node memory, the node memory being arranged to store at least a node identifier; a node receiver and a node transmitter arranged to receive and transmit communication on said powered audio bus; a bus power monitoring unit; a utility unit arranged to provide a utility function of said node, the utility unit of at least one of the nodes comprising at least one loudspeaker and at least one amplifier arranged to drive said loudspeaker based on control information and audio information received from said powered audio bus by said node receiver; and a power converter arranged to convert power from said powered audio bus to supply power to at least partly the node processing unit, the node receiver, the node transmitter and the utility unit; a bus driver connected to said powered audio bus at a bus driver portion of said powered audio bus, the bus driver being arranged to feed control information and audio information into the powered audio bus, the bus driver comprising a driver processing unit and a driver memory, the driver memory being arranged to store at least said node identifiers for said nodes; and a bus power supply connected to said powered audio bus at said bus driver portion of said powered audio bus, the bus power supply being arranged to feed power into the powered audio bus; wherein the nodes are arranged to draw power from said bus power supply via said powered audio bus upon instruction from said bus driver or upon their connection order not being identified by said bus driver;
thereby forming a subset of said nodes drawing power in an occasion;wherein the bus power monitoring units are arranged to determine a farthest node as one node of said subset of said nodes which is connected to said powered audio bus farther away from said bus driver than any other node of said subset; wherein the node transmitter and node receiver of a node upon being determined as said farthest node are arranged to communicate a node identifier with said bus driver, so that a node identifier for said farthest node can be stored in said node memory and said controller memory.
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20. A method of retrofitting nodes and a bus driver to an existing loudspeaker installation cable to transform it into a powered audio bus, the method comprising
providing a powered audio bus by connecting nodes to a previously installed loudspeaker installation cable, each of the nodes comprising: -
a node processing unit and a node memory, the node memory being arranged to store at least a node identifier; a node receiver and a node transmitter arranged to receive and transmit communication on said powered audio bus; a bus power monitoring unit; a utility unit arranged to provide a utility function of said node, the utility unit of at least one of the nodes comprising at least one loudspeaker and at least one amplifier arranged to drive said loudspeaker based on control information and audio information received from said powered audio bus by said node receiver; and a power converter arranged to convert power from said powered audio bus to supply power to at least partly the node processing unit, the node receiver, the node transmitter and the utility unit; connecting a bus driver to said installation cable at a bus driver portion of said powered audio bus, the bus driver being arranged to feed control information and audio information into the powered audio bus, the bus driver comprising a driver processing unit and a driver memory, the driver memory being arranged to store at least said node identifiers for said nodes; and
byconnecting a bus power supply to said installation cable at said bus driver portion of said powered audio bus, the bus power supply being arranged to feed power into the powered audio bus; arranging for a subset of the nodes to draw power from said bus power supply via said powered audio bus; using said bus power monitoring units of said subset to determine a farthest node as one node of said subset which is connected to said powered audio bus farther away from said bus driver than any other node of said subset; and using said node transmitter and node receiver of said determined farthest node to communicate a node identifier with said bus driver so that a node identifier for said determined farthest node is stored in said node memory and said controller memory.
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Specification