Patent ID: 8789137
Filing Date: 2014-07-22
Classification: G06F

Abstract:
1. A data processing device comprising: a first interface configured to connect the data processing device to an multifunction printer, wherein the first interface is a Serial Advanced Technology Attachment cable; an authentication unit configured to perform a process for authenticating the multifunction printer which is connected via the first interface; a control unit configured to control, in response to correct performance of authentication of the multifunction printer by the authentication unit, the data processing device so that transfer of data to the multifunction printer is enabled; a determination unit configured to determine a state of connection of the data processing device to the multifunction printer via the first interface; and a change unit configured to, on the basis of determination by the determination unit that the data processing device is not connected to the multifunction printer via the first interface, change to being in a state in which the authentication unit does not authenticate the multifunction printer; and a second interface configured to connect the data processing device to a storage device, wherein, when authentication of the multifunction printer is not correctly performed by the authentication unit, the control unit controls the data processing device so that the data processing device operates in a blocking mode in which the data processing device blocks an access request to the storage device which has been received by the data processing device from the multifunction printer via the first interface, and controls the data processing device, in response to correct performance of authentication of the multifunction printer by the authentication unit, so that the data processing device operates in a normal mode in which processing of data that has been received from the storage device and transfer of the data to the multifunction printer are permitted; wherein the data processing device is able to operate so as to encrypt image data that has been transferred from the multifunction printer, to store the encrypted image data in the storage device, and to transfer the decrypted image data to the multifunction printer.