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US 6,757,068 B2Granted
Self-referenced tracking
AssigneeInterSense, Inc.
InventorEric Foxlin
Life of this patent
Estimating the term…
Abstract
A new tracking technique is essentially “sourceless” in that it can be used anywhere with no set-up, yet it enables a much wider range of virtual environment-style navigation and interaction techniques than does a simple head-orientation tracker. A sourceless head orientation tracker is combined with a head-worn tracking device that tracks a hand-mounted 3D beacon relative to the head. The system encourages use of intuitive interaction techniques which exploit proprioception.
Claims59
A method comprising
- mounting a sourceless orientation tracker on a user's head, and
- using a position tracker to track a position of a first localized feature associated with a limb of the user relative to the user's head.
A method comprising:
- using acoustic or radio frequency signals to track a position of a first localized feature associated with a limb of the user relative to the user's head.
A tracking system comprising:
- an acoustic or radio frequency position tracker adapted for mounting on a user's head,
- said tracker being adapted to track a position of a first localized feature associated with a limb of the user relative to the user's head.
A tracking system comprising
- a sourceless orientation tracker for mounting on a user's head, and
- a position tracker adapted to track a position of a first localized feature associated with a limb of the user relative to the user's head.
A method comprising:
- mounting a motion tracker on a user's head;
- using a position tracker to track a position of a first localized feature associated with a limb of the user relative to the user's head;
- positioning the first localized feature at a first point;
- positioning the first localized feature at a second point;
- and
- calculating the distance between the first point and the second point.
3 more elements
A system comprising:
- mounting a first inertial sensor on a user's head;
- mounting a second inertial sensor elsewhere on the user's body or in an object held by the user;
- and
- tracking the position of one inertial sensor relative to the other.
1 more element
Dependencies are inferred from the claim text.