Mobile Terminal Camera Control via Touch Distance
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Solution Overview
Problem
Current mobile terminals have limited input methods for controlling advanced camera functions, making it difficult for users to utilize camera features flexibly and intuitively, especially in response to changing situations.
Innovation Solution
A mobile terminal with a flexible display and a controller that allows users to control camera functions by receiving touch inputs moving from a start position to a reference position, enabling intuitive image capture based on distance and movement, which adjusts capture cycles, focus, and depth of field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed camera functions are provided in mobile terminals, then basic capture operations can be performed, but users cannot flexibly control camera functions according to changing situations
Solution Approach 1:
The patent applies dynamics by making the camera function control movable and adjustable based on touch input position. The capture function is no longer fixed but dynamically changes based on where the user touches on the display, allowing flexible control while maintaining intuitive operation through direct touch interaction.
Solution Approach 2:
The patent introduces a spatial dimension to camera control by mapping touch position on the display (2D plane) to camera parameters. The distance from the center of the display becomes a new dimension for controlling capture behavior, transforming traditional single-point control into area-based contextual control.
2Adaptability or versatility
If traditional touch input methods are used for camera control, then simple operations are possible, but advanced camera functions cannot be controlled intuitively
Solution Approach 1:
The patent makes the touch interface universal by enabling a single touch gesture to control multiple camera functions. The same touch input mechanism controls both basic capture and advanced functions like out-focus and continuous shooting, depending on the touch position, reducing the need for separate controls for each function.
Solution Approach 2:
The system provides self-service by automatically determining which camera function to activate based on touch position without requiring users to manually select modes or configure settings. The camera controller interprets touch distance from center and automatically applies appropriate capture parameters.
3Ease of operation
If camera functions are provided in fixed forms, then device simplicity is maintained, but user convenience for sophisticated capture operations is reduced
Solution Approach 1:
The patent applies local quality by assigning different control functions to different regions of the touch display. The center region corresponds to normal capture, while regions farther from the center trigger out-focus or continuous shooting modes, allowing users to access sophisticated capture operations conveniently based on where they touch.
Data Source
AI summary
Provided is a mobile terminal including a camera, a display, and a controller. The controller is configured to display, on the display, an image identified by the camera, receive a touch input moving from a start position on the display, and capture the image, identified by the camera, based on a distance from a reference location to a position of the touch input.


