HMD Pointer Position Locking for Accurate Input
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Solution Overview
Problem
Existing head-mounted display systems face challenges in maintaining accurate operations due to changes in the position and attitude of operation devices, leading to inaccurate input operations when determining input contents based on the display position of operation images.
Innovation Solution
A head-mounted display apparatus with a display unit, detection unit, receiving unit, and display controller that detects first operations and receives second operations, allowing the display controller to shift to a state where the display position of the operation image cannot be moved by the first operation, enabling accurate operations without changing the display position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the operation image position is moved based on the first operation (device motion/attitude change), then the operability for navigating the operation image is improved, but the input accuracy deteriorates when the receiving unit receives the second operation because the display position changes during input
Solution Approach 1:
The system dynamically changes the responsiveness of the operation image display position to the first operation based on the state of the receiving unit. When the receiving unit is in a state to receive the second operation, the display position becomes unresponsive to the first operation. When the receiving unit is not in this state, the display position responds to the first operation. This dynamic adjustment resolves the contradiction by making the system behavior adaptive to the current operational context.
2Measurement precision
If the display position of the operation image is fixed when receiving the second operation, then the input accuracy is improved, but the ease of moving the operation image to intended positions deteriorates
Solution Approach 1:
The system dynamically adjusts the responsiveness characteristics based on the receiving unit's state. In the state for receiving the second operation, the display position is fixed to ensure input accuracy. In other states, the display position is responsive to the first operation for easy navigation. This dynamic state-dependent behavior allows the system to optimize for the current task requirement.
Data Source
AI summary
Provided is an HMD including an image display unit to be worn by a user on a head and configured to display an image; a six-axis sensor and a magnetic sensor configured to detect an operation performed by using a control device as a first operation; a touch sensor configured to detect a contact of a finger of the user as a second operation; and a display controller configured to display, on the image display unit, a pointer to be operated by the control device, and to move the pointer based on the motion or attitude of the control device detected by the six-axis sensor and the magnetic sensor. The display controller, upon detecting a contact of a finger of the user by the touch sensor, shifts to an operation state where the display position of the pointer cannot be moved through the operation performed by using the control device.