Patent ID: 7445148
Filing Date: 2008-11-04
Classification: G06Q,G07F

Abstract:
1. A reader/writer apparatus to communicate with an external radio communication apparatus in accordance with instructions from a controller apparatus, the reader/writer apparatus comprising: a storage unit including one or more key storing segments to store access keys that enable communication with the radio communication apparatus, wherein the storage unit includes one or more change information storing segments to store key change information used to change the access keys; an access key searching unit configured to search for an access key stored in one of the key storing segments on the basis of key-associated information that is received from the controller apparatus and that uniquely specify the access key; a communication unit configured to receive instructions from the controller apparatus, generate a command corresponding to the instructions, and transmit the command to the radio communication apparatus by using the access key obtained by the access key searching unit; and a key change information searching unit configured to search for key change information on the basis of key-change-associated information that is received from the controller apparatus and that uniquely specify the key change information stored in one of the change information storing segments.