| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a USB device which can more smoothly perform wireless data communication with a USB host unit and/or a USB device unit. <P>SOLUTION: A printer 20 includes a USB device 30 including a transmitter-receiver 32 for performing wireless data transmission/reception to/from the USB host unit and a transmitter-receiver 33 provided separately from the transmitter-receiver 32 to perform wireless data transmission and reception to/from the USB device unit. In an execution period when the USB device 30 executes print processing of printing data received from the device unit (digital camera 40), the USB device 30 transmits a busy status to the USB host unit (user PC 60). In this manner, when being not able to perform processing of data from the USB host unit, the USB device preliminarily executes processing to inform the USB host unit of this state. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
