| US 7,541,692 B2 | ||
| Peripheral device having a power supply | ||
| B. Mark Hirst, Boise, Id. (US); and Tony Barrett, Boise, Id. (US) | ||
| Assigned to Hewlett-Packard Development Company, L.P., Houston, Tex. (US) | ||
| Filed on Nov. 26, 2002, as Appl. No. 10/304,405. | ||
| Prior Publication US 2004/0103326 A1, May 27, 2004 | ||
| Int. Cl. H02J 1/10 (2006.01); H02J 3/38 (2006.01); H02J 7/34 (2006.01) | ||
| U.S. Cl. 307—44 [307/46] | 30 Claims |
| 1. A peripheral device for coupling with a host printing device using an external data bus that extends between the peripheral
device and the host printing device, the peripheral device comprising:
a processing device;
memory;
a drive motor; and
a power circuit including a power source configured to be recharged by power collected from the host printing device via the
external data bus and to supply power to the drive motor and a diode configured to block a flow of power from the peripheral
device to the host printing device along the external data bus;
wherein, because of the operation of the power circuit, no separate power cord or converter is needed to power the peripheral
device.
|