Wearable Display Input System Using Overlapping Temple Arm Touch Strips
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Solution Overview
Problem
Wearable display devices, such as eyeglasses, face challenges in providing effective multi-dimensional input modalities due to their small form factor, making two-dimensional touch input with human fingers difficult and potentially causing undesirable movement of the device during use.
Innovation Solution
An input system featuring two touch-sensitive strips on the temple arms of the wearable display device, allowing linear contact input signals from user digits, which are processed by a connected computing device to navigate user interfaces and manage visualization of data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If two-dimensional touch input surface is implemented on wearable display devices, then user input capability is improved, but device stability deteriorates due to loose wearing causing movement
Solution Approach 1:
The touch-sensitive surface is segmented into multiple independent touch-sensitive strips arranged linearly along the temple arm, allowing each strip to function as an independent input zone that accommodates natural finger and thumb movements without requiring a large continuous surface area
Solution Approach 2:
The input system transitions from a two-dimensional touch surface to a one-dimensional linear arrangement of touch-sensitive strips, optimizing the limited space on the temple arm while maintaining effective input capability through strategic positioning along the length of the temple arm
2Measurement precision
If large touch input surface is provided on wearable devices, then input precision is improved, but device form factor increases
Solution Approach 1:
Multiple discrete touch-sensitive strips are positioned at specific locations along the temple arm where they can be naturally contacted by different parts of the user's hand, providing precise input capability at these localized zones without requiring a large overall surface area
Solution Approach 2:
The system uses a one-dimensional linear arrangement of touch-sensitive strips along the temple arm length, maximizing input precision within the constrained form factor by utilizing the available linear space rather than requiring a two-dimensional surface
3Ease of operation
If conventional touch input is implemented on temple arms, then user control is improved, but comfort deteriorates due to device movement during input
Solution Approach 1:
The temple arm is designed with flexible portions that can deflect in response to touch input forces, allowing the structure to dynamically accommodate user input without transmitting excessive movement to the display portion, thereby maintaining both comfort and control
Solution Approach 2:
The temple arm is divided into distinct functional zones including flexible portions and rigid portions, with touch-sensitive strips positioned on the rigid portion while the flexible portion absorbs input forces, isolating the display from movement while maintaining user control capability
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
Enables precise and ergonomic user input on wearable devices, accommodating natural finger and thumb movements while minimizing device movement, thus enhancing user control and interaction with augmented reality environments.
Implementation Method 1
a first touch-sensitive strip extending along a first axis on a top side of the temple arm, and a second touch-sensitive strip extending parallel to the first touch-sensitive strip on a bottom side of the temple arm
Data Source
AI summary
Embodiments that relate to an input system for a wearable display device are disclosed. For example, in one disclosed embodiment the wearable display device comprises at least one temple arm extending from a display bridge of the device. A first touch-sensitive strip extends along a first axis on a top side of the arm. A second touch-sensitive strip extends parallel to the first touch-sensitive strip on a bottom side of the arm opposite to the top side. At least a portion of the first touch-sensitive strip and a portion of the second touch-sensitive strip overlap as viewed from a second axis. Both the first and second touch-sensitive strips are configured to generate linear contact input signals from one or more user digits sliding along the first axis, with the linear contact input signals provided to a user interface program.