Patent ID: 11865708
Assignee: MTD PRODUCTS INC
Field: Control (Instruments)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A domestic robotic system including a robot, the robot comprising:
a movement system, comprising a drive system and one or more moveable elements, the drive system being configured to drive said one or more moveable elements so as to move the robot over a surface;
an image obtaining device for obtaining images of the exterior environment of the robot; and,
at least one processor in electronic communication with the movement system and the image obtaining device, the at least one processor programmed to:
detect a predetermined pattern within at least one of the obtained images, the predetermined pattern being associated with a marker provided on a base station;
respond to the detection of the predetermined pattern by determining, by a first process, a first estimate of at least one of a position and an orientation of the robot, said first estimate of the at least one of the position and orientation of the robot being relative to the base station, the at least one processor and image obtaining device thereby forming at least part of a first navigation system for the robot;
determine, by a second process, an alternative estimate of said at least one of the position and orientation of the robot, the at least one processor thereby forming part of a second navigation system for the robot; and,
perform at least one calibration of said second navigation system using said first navigation system, wherein the at least one processor is programmed such that said at least one calibration includes a base station calibration that takes place when the robot is docked at said base station.