Patent ID: 7903591

Claim:
An information processing system comprising: an information processor configured to receive data transmitted from a transmitter and process the data, wherein said transmitter is a registered user of the information processor; and a receiver configured to receive the data from said information processor, wherein said receiver is a registered user of the information processor; said information processor comprises: a data receptacle configured to receive said data from the transmitter, which includes large volume data that comprises data of large volume and destination information identifying a destination that the information processor will transmit the large volume data to, wherein the data receptacle is configured to store the large volume data received from the transmitter in a storage location for which only the receiver has access rights among registered users of the information processor; a notification information transmitter configured to transmit notification information notifying presence of the large volume data, to said receiver, which is the destination of said large volume data corresponding to the destination information, via a base station in a narrowband communication network; a key generator configured to generate a key that is sent to the receiver with the notification information and which is used to determine access to the large volume data stored in the storage location of the data receptacle the information processor, the key being generated after the information processor receives the large volume data from the transmitter; and a large volume data transmitter configured to transmit said large volume data via an access point in a broadband communication network to said receiver in response from said receiver, and said receiver comprises: a notification information receptacle configured to receive said notification information with said key via said base station in the narrowband communication network; a request unit configured to request said large volume data to said information processor via the access point, based on said notification information and using said key, when said receiver is within a communication range of the access point; and a large volume data receptacle configured to receive said large volume data, which is sent from said information processor in response to said request for said large volume data, via said access point in the broadband communication network, wherein the receiver is configured to receive said notification information via said base station when the receiver is not in a communication range of the access point and the receiver does not receive said large volume data when the receiver is not in a communication range of the access point, and the receiver is configured to request said large volume data to said information processor via the access point when the receiver moves into the communication range of the access point after the receiver has received said notification information via the base station.