Digital Camera Shutter Button State Logic for Continuous Video
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Solution Overview
Problem
Conventional digital photographing apparatuses cannot consecutively reproduce moving images photographed at different times, as each button press creates a new moving image file, preventing continuous playback of images captured at various times.
Innovation Solution
The method employs a digital photographing apparatus with a shutter release button having two levels of signals, allowing users to create and manage moving image files by generating a first signal to start and a second signal to continue or stop storing moving image data, enabling images to be stored and replayed within the same file based on user choice.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a moving image file is created each time the shutter release button is pressed, then the operation is simple and straightforward, but the user cannot consecutively reproduce moving images photographed at different times
Solution Approach 1:
The system dynamically changes the function of button presses based on the current recording state. When recording is in progress, pressing the shutter release button pauses recording; when paused, pressing the button resumes recording. This dynamic state-dependent behavior allows multiple time segments to be accumulated in a single file without requiring complex file management operations from the user.
Solution Approach 2:
The recording operation continues uninterrupted across multiple button presses, with the same file identifier maintained throughout. The system preserves the continuous nature of the recording session by accumulating paused and resumed segments in one file, eliminating the need to create new files for each recording interval and enabling consecutive reproduction of all segments.
2Reliability
If multiple moving image files are created for images photographed at different times, then each image is properly stored, but the user cannot consecutively reproduce the images without manual intervention
Solution Approach 1:
Multiple recording segments that would traditionally be stored in separate files are merged into a single moving image file. The system maintains distinct time frames within the file while using a unified file identifier, allowing all segments to be automatically played back in sequence without requiring user intervention to locate or assemble individual files.
3Device complexity
If the shutter release button has only a single function, then the device structure is simple, but the device cannot provide paused and continued recording functionality
Solution Approach 1:
The shutter release button serves multiple functions depending on the current recording state: it can start recording, pause recording, or resume recording. This multi-functional design eliminates the need for separate buttons for each operation, maintaining structural simplicity while providing comprehensive recording control capability.
Data Source
AI summary
Provided is a method of controlling a digital photographing apparatus recording moving image data being input to a recording medium in a moving image photographing mode. The method includes creating a moving image file in the recording medium and storing the moving image data being input in the moving image file when a first signal is generated by a first button of the digital photographing apparatus pressed by a user, stopping storing of the moving image data being input when the first signal is generated by a second button of the digital photographing apparatus pressed by the user, continuing to store the moving image data being input in the moving image file when a second signal is generated by the second button pressed by the user, and stopping storing of the moving image data being input and completing the moving image file when the second signal is generated by the first button pressed by the user.