Patent ID: 7627748
Filing Date: 2009-12-01
Classification: H04L

Abstract:
1. A network connection device for connecting a first IEEE 1394 bus and a second IEEE 1394 bus, comprising: a data reception unit connected to the first IEEE 1394 bus and configured to receive data transferred from a transmission node connected to the first IEEE 1394 bus through a first isochronous channel on the first IEEE 1394 bus; a data transfer unit connected to the second IEEE 1394 bus and configured to transfer the data to a reception node connected to the second IEEE 1394 bus through a second isochronous channel on the second IEEE 1394 bus; a query reception unit configured to receive a query on information regarding the transmission node from the reception node, by using a prescribed packet on the second IEEE 1394 bus; an inquiry unit configured to make an inquiry on the information regarding the transmission node to the transmission node, by using a prescribed packet on the first IEEE 1394 bus, upon receiving the query; a reply reception unit configured to receive a reply to the inquiry from the transmission node, by using a prescribed packet on the first IEEE 1394 bus; and a reply notification unit configured to notify the reply to the reception node, by using a prescribed packet on the second IEEE 1394 bus, upon receiving the reply, so as to facilitate a contents protection procedure between the transmission node and the reception node that are not connected to an identical network by using the query and the reply.