Variable Display Cursor Control During Screen Size Changes

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Solution Overview

Problem

In electronic devices with variable displays, changes in display region size can lead to mismatches between the display region and control region, causing user input inefficiencies and cursor movement issues.

Innovation Solution

The electronic device includes a variable display with a main display region that adjusts in size, featuring a touch screen panel and processors to sense changes in the display region, reset the control region, and control cursor speed accordingly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of moving object

If the display region size is changed in a variable display, then the display area is expanded or contracted to improve portability and display expansion, but the control region and display region become mismatched, causing user input inefficiencies

Engineering Contradiction:

Improvedisplay region areaVSAvoiduser input efficiency

Core Design Contradiction:

Area of moving objectVSEase of operation

Solution Approach 1:

The control region is dynamically adjusted to match the display region size changes. When the display region is expanded or contracted, the control region is correspondingly enlarged or reduced through coordinate transformation, ensuring continuous compatibility between input device control area and display output area.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The coordinates of the control region are transformed based on the display region size changes. By calculating new control region coordinates according to the expansion or contraction ratio, the system maintains proper mapping between input device and display region throughout the size change process.

Inventive Principle:

Principle #35Parameter changes

2Area of moving object

If the display region size is changed, then the display area is adjusted to improve portability, but the cursor moving speed remains unchanged, causing smoothness issues and user discomfort

Engineering Contradiction:

Improvedisplay region areaVSAvoidcursor movement smoothness

Core Design Contradiction:

Area of moving objectVSEase of operation

Solution Approach 1:

The cursor moving speed is dynamically adjusted according to the display region size changes. When the display region is expanded or contracted, the cursor speed is correspondingly increased or reduced through coordinate transformation calculations, maintaining smooth and natural cursor movement across different display sizes.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12505771B2Electronic device comprising variable display and method for operating same

Publication Date: 2025.12.23 SAMSUNG ELECTRONICS CO LTD

AI summary

An electronic device includes: a variable display having a main display region visible out of the electronic device, wherein a size of the main display region may be reduced from a first display region to a second display region, and including a touch screen panel serving as a first input device, and at least one processor, comprising processing circuitry, electrically connected to the variable display. At least one processor, individually and/or collectively, is configured to control the display to: display a cursor in the main display region and move the cursor into the second display region and display the cursor, based on identifying the main display region being reduced in size from the first display region to the second display region, based on the cursor being positioned in the first display region other than the second display region, in the state that the size of the main display region corresponds to the first display region.