Gear-Driven IPD Adjustment Mechanism for Head-Mounted Displays

The patent replaces the traditional discrete mechanical adjustment mechanism with a voice-controlled system that uses acoustic signals to drive display assembly movement. The voice recognition module converts voice commands into control signals that actuate the display assemblies, eliminating the need for physical knobs, buttons, or stepped mechanical adjusters. This substitution enables continuous, precise interpupillary distance adjustment while maintaining relatively simple device structure.

The patent changes the control parameter from discrete mechanical positions to continuous voice-commanded positions. By using voice recognition to generate control signals that can specify any position within the adjustment range, the system achieves continuous interpupillary distance adjustment rather than being limited to predefined discrete settings. This parameter change enables fine-tuning of the interpupillary distance to match the user's exact anatomical measurement.

The patent replaces complex mechanical continuous adjustment mechanisms (such as infinite screw mechanisms or precision rails) with a voice-controlled electronic system. The voice recognition module and control signal generation system provide ease of operation through natural voice commands, while the electronic actuation of display assemblies avoids the mechanical complexity of traditional continuous adjustment mechanisms.

The system provides self-service by automatically processing voice commands and executing the corresponding display assembly movements without requiring the user to manually operate complex mechanical controls. The voice recognition system interprets natural language commands and translates them into precise positioning actions, making the adjustment process as easy as speaking while hiding the underlying system complexity.