Patent ID: 7446811
Filing Date: 2008-11-04
Classification: H02N,H04N

Abstract:
1. A driving controller for controlling driving of a plurality of driving units physically connected with one another, at least one driving unit includes a driving member frictionally engaged with a driven member, comprising: a driving circuit which supplies a driving signal to the plurality of driving units; a detecting circuit which detects whether the position of the driven member has changed at a predetermined time; and a controlling circuit which is responsive to the detecting circuit and which controls the driving circuit to drive the at least one driving unit including the driving member and another driving unit, the controlling circuit controls the driving circuit to drive the another driving unit when the detecting circuit detects that the position of the driven member engaged with the driving member of the at least one driving unit has not changed at a predetermined time, even though the driving circuit provides a driving signal to the at least one driving unit.