Touch Screen Shutter Dragging for Timed Self-Portrait Stability
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Solution Overview
Problem
Users face difficulties when taking self-portraits with electronic devices as they need to hold the device and press the virtual shutter button simultaneously, leading to unstable images due to shaking or shifting.
Innovation Solution
A portable electronic device with a touch screen and image capturing unit that allows users to trigger a timed shooting function by dragging a shutter button, determining a shooting countdown time based on the location of a touch event, and automatically shooting an image when the countdown is complete.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the user presses the virtual shutter button to trigger photo shooting, then the photo can be captured, but the user needs to hold the device with one hand and press the button simultaneously, causing shaking or shifting that results in unexpected images
Solution Approach 1:
The system performs preliminary action by automatically detecting touch duration and pre-determining the optimal shooting timestamp before the user releases the touch screen. This eliminates the need for the user to hold the device steady while pressing the shutter button, as the shooting is automatically triggered based on the touch duration that has already been measured.
Solution Approach 2:
The system enables self-service by automatically determining the shooting timestamp based on the touch event duration without requiring manual intervention. The device itself measures the touch duration, calculates the appropriate delay time, and automatically triggers the photo capture, freeing the user from the conflicting requirements of holding the device and pressing the button simultaneously.
2Adaptability or versatility
If the user drags the shutter button along a predetermined path to set countdown time, then the operation becomes more versatile, but the operation complexity increases
Solution Approach 1:
The system applies parameter changes by mapping the position of the shutter button along a predetermined path to different countdown time parameters. As the user drags the button from the center toward the edge of the touch screen, the countdown time parameter changes accordingly (e.g., 1s, 2s, 3s, 5s, 10s). This provides versatile timed shooting options while keeping the operation intuitive through visual feedback on the button's position.
Data Source
AI summary
A portable electronic device and a touch operation method thereof are provided. When the portable electronic device is at an image capturing mode, a touch event on a touch screen is detected. Next, a shooting countdown time is determined according to a location of an end point of the touch event on a predetermined path. When no touch event is detected on the touch screen, executing the counting of the shooting countdown time, and an image capturing unit is triggered to capture an image when the counting of the shooting countdown time is up. The user directly enables a timed shooting function and sets a shooting countdown time at the same time by dragging a shutter button, which provides the convenience while operation.