Patent ID: 8228802
Filing Date: 2012-07-24
Classification: H04H,H04L

Abstract:
1. A signal transmission apparatus connected to a network as one node among a plurality of nodes which include a conductor node and which treat various physical quantities representing states of the nodes, the network being provided with an audio signal transmission period for transmitting a plurality of channels of audio signals each transmission cycle and a control data transmission period for transmitting control data of the plurality of the nodes each control cycle, said signal transmission apparatus comprising: a receiving section that receives a list created by the conductor node and transmitted to the plurality of the nodes each control cycle, the list collectively managing specifications of the physical quantities to be outputted from the plurality of the nodes; a specifying section that specifies a first physical quantity that said one node is to output according to the received list; a creating section that creates control data containing a value of the first physical quantity among physical quantities representing the states of said one node; an output section that is capable of outputting a value of a second physical quantity other than the first physical quantity; and a transmitting section that transmits the control data containing the values of the first physical quantity and the second physical quantity, wherein the value of the first physical quantity is transmitted each control cycle when the first physical quantity is specified by the list, while the value of the second physical quantity is transmitted at a control cycle immediately after a variation in the value of the second physical quantity is detected in said one node.