Extended Reality Palm Touchpad for Natural Cursor Control

The patent uses hand tracking to create a virtual copy of the user's hand in the extended reality environment. This virtual hand model replicates the physical hand's movements and gestures, allowing direct manipulation of virtual objects without additional physical controllers. The hand tracking system captures hand pose, position, and gesture data to generate a corresponding virtual representation that users can interact with naturally.

The system uses the user's own body (hands) as the control interface instead of requiring external devices. The hands serve dual purposes: both for natural interaction with the virtual environment and for providing tactile feedback through haptic actuators. This self-service approach eliminates the need for separate controllers while maintaining control precision through direct neural-muscular control of hand movements.

The patent implements a feedback loop where haptic actuators embedded in the hand model provide tactile feedback to the user during virtual interactions. When the virtual hand contacts virtual objects or surfaces, the system calculates contact forces and transmits these as haptic sensations through the actuators. This closed-loop feedback system restores the sense of touch and pressure, making virtual interactions feel more realistic and physically accurate.

The patent introduces haptic actuators as an intermediary between the user's physical hand and the virtual environment. These actuators mediate the interaction by translating virtual contact forces into physical sensations that the user can feel. This intermediary layer bridges the gap between the digital and physical domains, providing realistic tactile feedback without requiring physical contact with actual objects.

The patent makes the user's hands serve multiple functions simultaneously: they are both the input device for controlling virtual objects and the output device for receiving haptic feedback. The hands perform manipulation tasks, gesture recognition, and tactile sensing without requiring separate specialized controllers. This multi-functionality approach simplifies the overall system while maintaining precise control capabilities.

The patent replaces mechanical controllers with an optical and haptic system. Instead of using physical buttons, joysticks, or triggers on external controllers, the system uses optical tracking to detect hand movements and haptic actuators to provide feedback. This substitution eliminates the need for complex mechanical controller structures while achieving comparable or superior control precision through direct hand manipulation.