| 摘要 |
<p>In implementing data transfer using noncontact close proximity transfer, the user operability is improved. The invention includes a communication system having a DSC and printer. Each of the DSC and printer includes a noncontact close proximity transfer function unit which executes, when the DSC and printer are located within a communicable range, connection processing for establishing a connection state in a first communication layer, a print image transfer processing unit which executes, when the connection state in the first communication layer is established, authentication processing for checking whether a connection state in a second communication layer has been established, and executes, when authentication fails, connection processing for establishing the connection state in the second communication layer, and a link control unit which transfers data when authentication succeeds or when the connection state in the second communication layer is established.</p> |
