Protective Screen Cover Switching UI Modes on Touch Displays
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Solution Overview
Problem
Protective covers for devices like wearable or handheld barcode readers often compromise functionality, such as display legibility and touch screen functionality, while providing protection against damage.
Innovation Solution
A selectively positionable protective cover that automatically switches the device between full and reduced functionality user interface modes by adjusting the display resolution and touch functionality based on its position, allowing for enhanced protection and usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective cover is used to protect the display and touch screen, then protection against damage is improved, but display legibility and touch screen functionality deteriorate
Solution Approach 1:
The protective cover is made rotatable between different positions (covering and exposing the display). This dynamic positioning allows the user to switch between protection mode and full functionality mode, resolving the contradiction by making the system adaptable rather than static.
Solution Approach 2:
The system changes the operational parameters of the display and touch screen based on the cover position. When the cover exposes the display, the system enables full resolution, refresh rates, and touch functionality. When covered, it reduces these parameters to optimize protection and power consumption.
2Reliability
If the protective cover covers the display, then protection is improved, but power consumption is reduced
Solution Approach 1:
The system periodically switches between full functionality mode and reduced functionality mode based on cover position. This allows the display to operate at full power only when needed (cover open) and conserve energy when protected (cover closed), creating an efficient periodic operation cycle.
Solution Approach 2:
The display parameters (resolution, refresh rate, backlight intensity) are dynamically changed based on whether the cover is open or closed. When closed, parameters are reduced to minimize power consumption while maintaining protection.
3Ease of operation
If the protective cover is positioned to expose the display, then user interface functionality is improved, but protection against damage deteriorates
Solution Approach 1:
The protective cover transitions from a static protective element to a dynamic interface component that the user rotates to signal their intent. This dynamic behavior allows the system to adapt its functionality based on the cover position, resolving the contradiction between protection and usability.
Solution Approach 2:
The system uses the cover position as feedback to automatically adjust its operational mode. When the cover exposes the display, the system receives feedback that full UI functionality is desired and automatically enables it, creating a closed-loop control system.
4Ease of operation
If a large display is used for exception handling and alphanumeric input, then user interface fidelity is improved, but the need for protection increases
Solution Approach 1:
The display functionality is segmented into different modes based on cover position. The full display area is available for high-fidelity UI interactions when the cover is open, while the covered portion provides protection. This segmentation allows the system to provide both large display capability and protection simultaneously.
Solution Approach 2:
The protective cover serves multiple functions: it provides physical protection when closed, and serves as a user interface control mechanism when rotated to the open position. This multi-functionality resolves the contradiction by making the cover an active participant in both protection and UI fidelity.
Data Source
AI summary
An example assembly includes a core module including a processor, a display, a touch user interface (UI) element extending around at least a portion of an outer periphery of the display, and a non-transitory computer-readable medium storing instructions; a housing configured to removably receive the core module; and a cover selectively positionable in a first position to expose the touch UI element and the display, and in a second position to cover at least a portion of the touch UI element and at least a portion of the display, wherein the instructions, when executed by the processor, cause the core module to: when the cover is positioned in the first position, operate the display and the touch UI element according to a first functionality UI mode and, when the cover is positioned in the second position, the display and the touch UI element according to a second functionality UI mode.