Touch Screen Image Capture Control for Portable Terminals
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Solution Overview
Problem
Portable terminals require complex and inconvenient processes for image capture, as users must manually switch modes and adjust settings, limiting ease of use for capturing images.
Innovation Solution
A touch sensing based image capture method and system that allows users to perform image capture operations automatically by displaying a preview image on a touch screen, recognizing touch inputs, and setting image capture functions such as focus area, exposure, and zoom through intuitive touch gestures like short, long, multi-position, and drag touches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual mode switching and setting adjustment are used for image capture, then capture function control is precise, but operation convenience deteriorates
Solution Approach 1:
The patent combines multiple capture functions (focus area setting, exposure control, zoom adjustment, illumination management) into a single unified touch interface. Users can perform all these operations by simply touching the preview image on the touch screen, merging what were previously separate manual controls into one integrated interaction method.
Solution Approach 2:
The system automatically interprets touch gestures and executes corresponding capture functions without requiring users to manually navigate through menus or switch modes. The touch input directly triggers the appropriate capture operation, allowing the system to serve itself by converting simple user gestures into complex capture sequences.
2Extent of automation
If touch sensing is implemented for image capture, then operation convenience is improved, but automation level increases
Solution Approach 1:
The patent segments different capture functions into distinct touch gesture types (short touch, long touch, multi-position touch, drag touch). Each gesture type corresponds to a specific capture operation, allowing the system to automatically execute the appropriate function based on the segmented touch pattern recognized.
Solution Approach 2:
The patent replaces traditional mechanical control methods (physical buttons, mode switches, manual adjustments) with a touch-sensitive display interface. This substitution enables automatic interpretation of user intent through touch gestures, eliminating the need for mechanical mode switching and direct manual control of capture parameters.
3Adaptability or versatility
If multiple touch gesture types are supported, then capture function versatility is improved, but system complexity increases
Solution Approach 1:
The patent implements a universal touch recognition system that handles multiple gesture types (short touch, long touch, multi-position touch, drag touch) through a single interface. This multi-functional approach allows the same touch screen to execute diverse capture operations (focus, exposure, zoom, illumination) without requiring separate control mechanisms for each function.
Data Source
AI summary
Disclosed is a portable terminal having a touch sensing based image capture function and image capture method therefore, the method including: displaying a preview image of an object to be captured on a touch screen; recognizing (sensing) a touch input for the preview image; setting an image capture function based on the recognized touch input; and automatically performing an image capture operation according to the set capture function. The image capture function includes setting and change for a focus area, exposure, illumination, lightness, zoom-in/zoom-out and color change. Therefore, the present invention can enable the user to freely set the focus area and to perform a single or continuous image capture operation with a simple touch, thereby being utilized in all portable devices employing the touch screen.