Touch Screen Auto Focus Guide for Mobile Terminal Image Capture
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Solution Overview
Problem
Current mobile terminals with touch screens face challenges in efficiently focusing on specific areas of an image for capture, requiring complex menu navigation or external input devices, which hinders user convenience and accuracy.
Innovation Solution
A mobile terminal with a touch screen that utilizes a proximity sensor and auto focus guide (AFG) displayed on the screen, allowing users to simply touch and select the focus area on the preview image for auto focusing, enabling easy adjustment and one-touch image capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complex menu navigation or external input devices are used for focusing, then focusing precision can be improved, but ease of operation deteriorates
Solution Approach 1:
The patent combines the touch screen display with the focus selection interface, merging the output display function and the input selection function into a single integrated component. Users can directly touch the preview image on the touch screen to select focus areas, eliminating the need for separate external input devices or complex menu navigation systems.
Solution Approach 2:
The touch screen serves multiple functions simultaneously - it displays the preview image and also acts as the input device for focus selection. The system uses the same component (touch screen) for both information display and user interaction, making the device self-sufficient and eliminating dependencies on external input devices.
2Measurement precision
If external input devices are used for focus selection, then focusing accuracy can be improved, but device complexity increases
Solution Approach 1:
The touch screen is designed to perform multiple functions: it serves as the display screen for showing the preview image, and simultaneously functions as the input device for focus area selection. This multi-functionality reduces the need for separate dedicated components for each function, thereby simplifying the overall device structure.
Solution Approach 2:
The patent merges the display function and input function into a single touch screen component. By combining these functions that were previously handled by separate components (display screen and external input device), the overall device complexity is reduced while maintaining focusing accuracy.
3Measurement precision
If manual focus adjustment is implemented, then focusing precision can be improved, but ease of operation deteriorates
Solution Approach 1:
The patent replaces manual mechanical focus adjustment with a touch-based electronic selection system. Instead of using physical knobs or buttons that require complex manipulation, users simply touch the desired focus area on the touch screen, substituting mechanical interaction with a more intuitive touch interface that maintains precision while improving ease of operation.
Data Source
Figure 1
Figure 2A~2B
Figure 3A
AI summary
A mobile terminal is provided. The mobile terminal comprises a camera for capturing an image, a touch screen (151) configured to display the image and to receive a touch input being a contact touch with the touch screen, and a controller. The controller is configured to display a preview image of the image to be captured on the touch screen (151), display an auto focus guide (AFG) on the touch screen (151), indicating a position where focusing will be performed, determine whether the touch input is a drag-and-drop operation, move the auto focus guide (AFG) to a position (B) where the drop has occurred, and perform auto focusing on the position where the auto focus guide (AFG) is displayed. Further provided are a corresponding method, computer program, and computer-readable storage medium.