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Robot cleaner, robot cleaning system and method of controlling same

  • US 7,480,958 B2
  • Filed: 03/28/2003
  • Issued: 01/27/2009
  • Est. Priority Date: 07/26/2002
  • Status: Expired due to Fees
First Claim
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1. A robot cleaner for performing a cleaning operation comprising:

  • a drive unit for driving a plurality of wheels;

    a camera disposed in the body; and

    a controller programmed to recognize a position of the drive unit using position information obtained from a recognition mark on a ceiling of a working area that is photographed by the camera, and controlling the drive unit by using the recognized position information to correspond to a target cleaning operation,wherein the recognition mark has a plurality of direction indicating portions integrally formed therewith, the direction indicating portions formed in an azimuthal direction from a predetermined center point of the recognition mark and having different lengths.

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