Patent ID: 7680157

Claim:
A transmitting apparatus that connects a first network and a second network, the first network including a plurality of channels each of which having a preset priority and a predetermined bandwidth speed, the transmitting apparatus comprising: a bandwidth-speed adjusting unit that retrieves, when a channel speed of the second network changes, the changed channel speed, if a sum of inherent bandwidth speeds of the channels of the first network exceeds the changed channel speed, adjusts the bandwidth speed of the first network in such a manner that a sum of the bandwidth speeds of the channels of the first network is below the changed channel speed and a bandwidth speed of a high-priority channel is not decreased from an inherent bandwidth speed and resets the bandwidth speed on each of the channels of the first network to the adjusted bandwidth speed, and if a bandwidth speed of one of the channels is decreased from an inherent bandwidth speed of the one of the channels and the sum of the inherent bandwidth speeds is equal to or less than the changed channel speed, resets the bandwidth speed on each of the channels of the first network to the inherent bandwidth speed.