| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide USB device equipment for enabling a host computer to recognize a plurality of USB devices in a prescribed order determined in advance. <P>SOLUTION: The USB device equipment 1 is provided with an AND circuit 30 for outputting a signal H when a power supply unit 20 for operating USB devices 11 to 14 is turned on and when a VBUS 6 for connecting a host computer 5 and a USB hub 10 is turned on. The signal H is inputted to a second VBUS 32 with a second USB device 12 connected thereto and is also inputted to first, third and fourth VBUSs 31, 33 and 34 with the first, third and fourth USB devices 11, 13 and 14 connected thereto through delay circuits 41 to 43 in this order. Since each VBUS is switched to on in the order of receiving the signal H, the host computer 5 can recognize the second, first, third and fourth USB devices in this order. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
