Patent ID: 7561285
Filing Date: 2009-07-14
Classification: G06K

Abstract:
1. An image processing apparatus comprising: a plurality of data processing units including a recording unit; a first interface unit connected to an external device via a first USB bus, wherein a logical channel of USB communication on the first USB bus is assigned for each of the plurality of data processing units; a second interface unit directly connected to the recording unit via a second USB bus, wherein the second interface unit is defined as a host of USB communication on the second USB bus and the recording unit is defined as a slave of USB communication on the second USB bus; a memory configured to temporarily store image data received by the first interface unit; a recording control unit configured to transfer the image data from the memory to the recording unit and to acquire ON/OFF state information of the recording unit via the second interface unit; a power control unit configured to control power ON/OFF of the recording unit via a signal line different from the second USB bus, wherein the signal line directly connects the recording unit and the power control unit; and a control unit configured to control the plurality of data processing units, the second interface unit and the power control unit, on the basis of control data received by the first interface unit.