Single-Button Display UI Control Using Short Click and Long Press
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Solution Overview
Problem
Existing display apparatuses face challenges in recognizing touch inputs from insulators and incur increased manufacturing costs or require large circuit board areas when using jog switches or tact switches for control.
Innovation Solution
A display apparatus with an input unit that includes a single physical function key or a touch panel, equipped with a processor that distinguishes between short clicks and long presses based on input time, maintaining execution speed within a preset critical time and accelerating it thereafter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a touch sensor is used to control the display apparatus, then the operation becomes more intuitive and easier, but touch inputs from insulators cannot be recognized
Solution Approach 1:
The patent changes the detection parameter from electrical conductivity (which fails for insulators) to optical properties. The touch sensor detects changes in light reflection, absorption, or other optical characteristics when any material (conductive or insulating) is placed on the display surface, enabling universal touch recognition regardless of material type.
2Reliability
If jog switches or tact switches are used for control, then reliable input is achieved, but manufacturing costs increase and large circuit board area is required
Solution Approach 1:
The patent replaces mechanical switches (jog switches or tact switches) with an optical touch sensing system. This substitution eliminates the need for complex mechanical structures and large circuit board areas, reducing manufacturing costs while maintaining reliable input recognition through optical detection of touch events.
3Speed
If execution speed is constantly maintained during long press input, then responsive operation is achieved, but energy consumption increases after prolonged use
Solution Approach 1:
The patent implements periodic sampling of touch input signals during long press operations. Instead of continuous processing, the system samples at predetermined intervals, maintaining responsive execution speed while significantly reducing energy consumption by keeping the processor in a lower power state between sampling events.
Data Source
AI summary
A display apparatus includes a display, a single physical button and a processor configured to control the display to display a guide user interface (UI), a selection UI and a plurality of menu items, based on a user input received via the single physical button being identified as a short click input, move the selection UI from one menu item among the plurality of menu items to another menu item among the plurality of menu items, based on the user input being identified as a long press input, select the one menu item and execute a control function corresponding to the selected one menu item, and based on an execution of the control function, control the display to display a setting UI indicating a current setting value of the control function.