Electricity: motive power systems – Positional servo systems – Vehicular guidance systems with single axis control
Reexamination Certificate
2007-01-23
2007-01-23
Leykin, Rita (Department: 2837)
Electricity: motive power systems
Positional servo systems
Vehicular guidance systems with single axis control
C318S568120, C318S580000, C701S023000, C901S001000, C180S167000
Reexamination Certificate
active
11318488
ABSTRACT:
Disclosed herein is a mobile robot which is capable of accurately calculating a position of the wireless signal source using a wireless signal, and allowing the mobile robot to accurately and rapidly return to a charging-stand using the calculated position. The position calculation system for a mobile robot includes: a wireless signal source for outputting a wireless signal continuously or periodically; and a mobile robot which includes a plurality of directional antennas for detecting the wireless signal outputted through the wireless signal source, wherein, the mobile robot calculates a direction of the wireless signal source via a rotation angle detected by the directional antennas, and calculates a distance separated from the wireless signal source using a wireless signal detection time difference between the directional antennas.
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patent: 2005/0222713 (2005-10-01), Kawabe et al.
Birch & Stewart Kolasch & Birch, LLP
Leykin Rita
LG Electronics Inc.
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