A robot cleaner, robot cleaning system, and a method for controlling the
same, using wireless communications an upwardly-looking camera for
photographing an upper image perpendicular to a forward-looking direction
of driving the robot cleaner; and a controller for controlling the driving
unit to allow the robot cleaner to drive within a cleaning area according
to a predetermined driving path, and compensating the driving path by
analyzing the image photographed by the upwardly-looking camera. Optional
features include second forwardly directed camera to provide a three
dimensional image sensors for sensing walls or obstacles and transmission
of data to external processor/controllers by a radio antenna. The
inventive system can recognize the robot cleaner position more accurately
by using a relatively constant upper image reducing movement error to a
target position.
