MASTER DEVICE, MAP TABLE UPDATE METHOD, PROGRAM, AND RECORDING MEDIUM

摘要

A control unit (20)in a master device is provided with an address acquisition unit (21) which, when a logical address and a physical address are acquired from a player device (200) which is a device on a network wherein the master device is a root device, associates the addresses and registers in a map table; a command issuance unit (23) which, when a physical address which is matched with the acquired physical address is already present in the map table, issues a confirmation command for confirming whether or not a device having a logical address associated with the matched physical address is present in the network; and an address table changing means (24) which, when the device is not present in the network, deletes the matched physical address from the map table.