Patent ID: 7209484
Filing Date: 2007-04-24
Classification: H04L,H04N

Abstract:
1. A gateway apparatus for coupling a first network and a second network respectively having mutually different address systems and implementing data exchange between devices respectively connected to the first network and the second network, said gateway apparatus comprising: an address administration table for indicating association between network addresses represented in a first network form and network addresses represented in a second network form; address update means for updating contents of said address administration table; device configuration detection means for detecting that a device configuration on the second network has changed; device information acquisition means for acquiring information concerning devices on the second network; address generation means for generating a network address represented in the first network form, based on information concerning the devices acquired by said device information acquisition means, wherein if a change of a device configuration on the second network is detected by said device configuration detection means, then said gateway apparatus generates a device address in said address generation means; means for inquiring whether another gateway apparatus connected to the first network is administering an address identical to the address generated by the address generation means, and responsive to existence of another gateway apparatus administering the identical address, for conducting processing so as not to register the generated address in said address administration table.