Touch Duration Control for Auto-Focus and Successive Capturing
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Solution Overview
Problem
Conventional digital cameras cannot perform successive capturing while maintaining auto-focusing when determining a focal area on a touch screen, limiting their functionality in capturing moving objects or panoramic photography.
Innovation Solution
A method and apparatus for a digital image photographing apparatus that generates a live view image, allows touch input on the screen to perform preprocessing operations like auto-focusing, and controls photographing based on touch duration, enabling both initial capture and successive capturing under varying conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If auto-focusing is performed by touching the screen to determine a focal area, then focusing precision is improved, but successive capturing cannot be performed
Solution Approach 1:
The system dynamically changes the capturing mode based on touch duration. Short touch duration triggers single capture with auto-focusing, while long touch duration triggers successive capturing mode, allowing the system to adapt to different user needs without sacrificing either focusing precision or successive capturing capability
Solution Approach 2:
The patent changes the parameter of touch duration to differentiate between single capture and successive capturing modes. By monitoring how long the user holds the touch, the system determines whether to perform auto-focusing followed by single capture or to enter successive capturing mode, thus resolving the contradiction between focusing precision and successive capturing capability
2Adaptability or versatility
If conventional shutter button operation is used for successive capturing, then successive capturing is enabled, but auto-focusing cannot be maintained on a specific focal area
Solution Approach 1:
The touch screen acts as an intermediary that combines the functions of both shutter button operation and focal area selection. By touching and holding a specific area on the touch screen, the user simultaneously selects the focal area and triggers successive capturing, eliminating the need for separate operations and maintaining focus on the touched area throughout the capturing sequence
3Adaptability or versatility
If touch duration is used to control photographing mode, then operation versatility is improved, but device complexity increases
Solution Approach 1:
The system uses the inherent property of touch duration, which naturally varies with user intent, to automatically determine the photographing mode. The control logic monitors touch duration and self-adjusts between single capture and successive capturing modes without requiring additional hardware or complex user interactions, thus achieving versatility with relatively simple implementation
Data Source
AI summary
A digital image photographing apparatus and a method of controlling the same. The method includes: determining a focal area by a touch; if the touch continues for a first time period, performing a photographing operation to generate a first capture image; and if the touch continues for a second time period that is longer than the first time period, a successive capturing operation is performed until the touch is ended. Accordingly, auto-focusing may be performed by using a touching method, and a photographing may be performed while maintaining an auto-focusing result, and then successive capturing may be performed.