Patent ID: 6775246
Filing Date: 2004-08-10
Classification: H04H,H04L

Abstract:
A communication control apparatus for setting a plurality of node apparatuses involved in a network to either of a transmitter and a receiver of synchronization information circulated through the network to synchronize the node apparatuses with each other, the communication control apparatus comprising:a storage device that memorizes capability information representing either of an active capability to transmit the synchronization information and a passive capability to receive the synchronization information, owned by each of the node apparatuses; an indicating device that indicates the active capabilities and the passive capabilities owned by the node apparatuses involved in the network according to the memorized capability information; a specifying device that is operated in association with the indicated active capabilities and the passive capabilities of the node apparatuses for outputting status information effective to specify each node apparatus to a transmitter or a receiver of the synchronization information; a plurality of memory blocks that are provided in correspondence to the plurality of the node apparatuses to memorize status information of the corresponding node apparatuses; and a registering device that registers each of the outputted status information into each memory block to set the corresponding node apparatus to a transmitter of the synchronization information when the status information specifies the transmitter, and to set the corresponding node apparatus to a receiver of the synchronization information when the status information specifies the receiver.