Oculus | Hand-held Controller Using Led Tracking Ring

Patent: Hand-held Controller Using Led Tracking Ring

Publication Number: 20180311575

Publication Date: 2018-11-1

Applicants: Oculus VR, LLC

Abstract

A hand-held controller includes a handle extending in a longitudinal direction. The handle is shaped and dimensioned to be grasped by a user’s hand. A ring is attached to an end of the handle and surrounds a thumb of the user when the handle is grasped by the user’s hand. The ring has an annular surface that defines a plane that forms a predetermined angle with respect to the longitudinal direction, and a curved outer surface. Light sources are mounted on the curved outer surface and configured to emit light to be captured by an imaging device for tracking a position or orientation of the hand-held controller. The light is emitted in a direction normal to the curved outer surface.

BACKGROUND 

Field of the Disclosure

The present disclosure generally relates to virtual reality (VR) controllers, and specifically to a hand-held controller using an LED tracking ring.

Description of the Related Arts

VR systems may include a controller to translate movement of the user’s body into tangible action in a virtual world. Some controllers provide vibration feedback to Android or iOS VR headsets for motion-based gaming. A controller may be equipped with a gyroscope, an accelerometer, or terrestrial magnetic field sensor to trace motion back to a game, allowing intuitive gameplay as if the player is within the game.

SUMMARY

Embodiments relate to a hand-held controller to track a user’s hand motion, position, natural gestures, and finger movement to create a sense of hand presence for more realistic and tactile VR. The controller may let the user make social gestures like point, wave, and give a thumbs-up or manipulate objects in the virtual space, pick up toys or fire laser guns with intuitive, natural hand movement.

In one embodiment, the hand-held controller includes a handle extending in a longitudinal direction. The handle is shaped and dimensioned to be grasped by a user’s hand. A ring is attached to an end of the handle and surrounds a thumb of the user when the handle is grasped by the user’s hand. The ring has an annular surface that defines a plane that forms a predetermined angle with respect to the longitudinal direction, and a curved outer surface. Light sources are mounted on the curved outer surface and configured to emit light to be captured by an imaging device for tracking a position or orientation of the hand-held controller. The light is emitted in a direction normal to the curved outer surface.

In one embodiment, the handle has a cylindrical shape.

In one embodiment, the hand-held controller includes a button located on a bottom surface of the handle. The button may be pressed by an index or middle finger of the user’s hand.

In one embodiment, the button has a symmetrical shape.

In one embodiment, the predetermined angle is between 45.degree. to 135.degree..

In one embodiment, a preferred ratio of a diameter of the ring to a length of the handle is 9:10.

In one embodiment, the light sources are light-emitting diodes.

In one embodiment, the handle is made of engineering plastic.

In one embodiment, the ring is made of engineering plastic.

In one embodiment, the hand-held controller includes a sensor interface circuit to receive sensor signals from a button located on a bottom surface of the handle. The button generates the sensor signals responsive to being pressed by an index or a middle finger of the user’s hand.

In one embodiment, the hand-held controller includes a circuit to provide electrical signals to the light sources.

In one embodiment, the hand-held controller includes a wireless communication interface to transmit wireless signals indicating user input received from the user’s hand.

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