Head-Mounted Display Input Using Wearable Motion Controllers
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Solution Overview
Problem
Existing HMD systems lack operability due to limited input methods, restricting the degree of freedom of user operations, especially when both hands are free.
Innovation Solution
An HMD system that connects to external operation devices, such as ring-type controllers, equipped with sensors, which transmit operation information via short-range wireless communication for enhanced input capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If voice input is used for HMD operation, then hands-free operation is achieved, but voice separation from ambient noise becomes difficult
Solution Approach 1:
The patent introduces an external operation device as an intermediary between the user and the HMD system. This device includes sensors that detect user operations and transmit operation information to the HMD, enabling hands-free control while avoiding the noise separation problems of voice input. The external device acts as a mediator that captures user intent through movement detection rather than voice recognition.
2Ease of operation
If gesture input is used for HMD operation, then operation capability is provided, but wide movement range and specific hand movements are required
Solution Approach 1:
The external operation device is designed with multi-functional capability to detect various types of operations including movement direction, speed, and acceleration. The device can recognize different operation patterns (moving in specific directions, rotating, accelerating) and translate them into corresponding HMD operations, providing universal operation capability without requiring specific hand gestures or wide movement ranges.
3Measurement precision
If a ring-type device with sensors is used for operation, then movement detection is achieved, but the degree of freedom of user operation is reduced
Solution Approach 1:
The patent implements dynamic operation modes where the HMD system can switch between different operation methods based on the operation device being used. When an external operation device is detected, the system dynamically adjusts to accept operations from this device while maintaining the capability to use other input methods. This dynamic adaptation preserves user freedom by allowing multiple operation pathways rather than restricting to a single fixed method.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances operability by allowing various input operations on the HMD, improving user interaction without hand constraints.
Implementation Method 1
the external operation device includes a sensor for detecting movement
Implementation Method 2
Operation information from the plurality of external operation devices is received through the short-range wireless communication unit
Data Source
AI summary
There are provided an HMD system capable of improving operability by realizing various input operations on a head mounted display (HMD), an HMD used therefor, and an operation method therefor. Therefore, in the HMD system, an HMD allowing an operation input from an external operation device is connected to a plurality of external operation devices. The external operation device is a device worn on the body of a user who uses the HMD, includes a sensor for detecting movement, and transmits operation information by moving the external operation device. The HMD includes a short-range wireless communication unit and an operation control unit. Operation information from the plurality of external operation devices is received through the short-range wireless communication unit. The operation control unit executes a predetermined operation based on the operation information received from the plurality of external operation devices.