Robot confinement

  • US 8,368,339 B2
  • Filed: 08/13/2009
  • Issued: 02/05/2013
  • Est. Priority Date: 01/24/2001
  • Status: Active Grant
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First Claim
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1. A robot navigation system comprising:

  • a robot having a light beam receiver oriented in a manner to have an omnidirectional field of view and configured to receive both directed beams and diffuse light signals; and

    at least one omnidirectional diffuse light region emitter that emits a modulated diffuse light region, wherein the omnidirectional modulated diffuse light region is positioned in a plane parallel to ground level such that a light beam receiver on the robot is in substantially the same plane as the omnidirectional modulated diffuse light region; and

    at least one directional light beam emitter that emits a directed beam defining a navigation barrier.

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