Robust face detection algorithm for real-time video sequence mobile drive with expansion capacity, stackable, mobile storage device and control circiut thereof

A control circuit, suitable for using in a mobile storage device having a plurality of mobile drives, wherein each of the mobile drives comprises a memory, a control unit, a detachable module and a switching unit, the control circuit comprising:

• a male connector and a female connector comprised in the detachable module, wherein by a combination of the male connector and the female connector, the mobile drives are electrically coupled with each other;
• and
• a first switch, a second switch and a third switch comprised in the switching unit, wherein the first switch is coupled between the control unit and the memory, while the second switch is coupled between the male connector and the female connector, and the third switch is coupled between the female connector and the memory, so that the memories of the mobile drives are enabled through the control unit.