Image Recording Apparatus Scene Marker Control
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Solution Overview
Problem
Conventional image recording devices face challenges in accurately capturing and playback of moving images, particularly in predicting important scenes and efficiently searching for specific scenes during continuous recording, leading to user errors and cumbersome playback operations.
Innovation Solution
An image recording apparatus with a setting unit to select between first and second recording modes, allowing for precise control of starting or stopping recordings and recording information about scene in-points and out-points, along with a display control unit to show total scene durations, enabling intuitive operation and user-friendly playback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous recording is performed to ensure no important scene is missed, then the probability of capturing important scenes is improved, but the time required to search for specific scenes increases significantly
Solution Approach 1:
The system performs preliminary actions by automatically detecting and marking in-points and out-points during the recording process itself. Metadata is generated and stored alongside the video data, creating scene markers in advance rather than requiring post-recording analysis. This preliminary tagging enables rapid scene localization during playback without manual searching.
Solution Approach 2:
The patent introduces metadata as an intermediary layer between the continuous video stream and the user. This metadata contains scene boundary information (in-points and out-points) that acts as a mediator, allowing users to quickly locate specific scenes without watching the entire continuous recording. The metadata serves as an index that bridges the gap between continuous recording and efficient scene access.
2Ease of operation
If the START/STOP button is used for both recording start and stop operations, then the operation simplicity is improved, but the occurrence of user errors increases
Solution Approach 1:
The system dynamically changes the function of the START/STOP button based on the current recording state. When recording is not in progress, the button performs start function. When recording is in progress, the same button performs stop function. This dynamic behavior is clearly indicated through on-screen displays showing recording status, allowing users to understand the current button function without confusion.
Solution Approach 2:
The system provides visual feedback through on-screen displays that show the current recording state (recording in progress, stopped, etc.). This feedback mechanism informs users of the system's current state, allowing them to predict the outcome of pressing the START/STOP button and avoid unintended operations. The feedback creates a closed-loop system where users can verify system state before acting.
3Device complexity
If scene duration information is not displayed during recording, then the device complexity is reduced, but the usability during playback is worsened
Solution Approach 1:
The system performs preliminary calculation and storage of scene duration information during the recording phase. In-points and out-points are detected and stored in metadata, allowing duration to be computed as (out-point - in-point). This preliminary preparation eliminates the need for complex real-time calculations during playback, maintaining simple device architecture while enabling useful duration display functionality.
Data Source
AI summary
An image recording apparatus having an image sensing unit and a particular operation unit controls so as to start or to stop, in a case where the first recording mode is set, in accordance with an operation on the particular operation unit, a recording to a recording medium of a moving image captured by the imaging unit, and to control so as to record, in a case where the second recording mode is set, in accordance with an operation on the particular operation unit, while continuing recording to the recording medium of a moving image captured by the imaging unit, information indicating a start of a scene which is a portion of the moving image being recorded, or information indicating an end of a scene which is a portion of the moving image being recorded.