Video Recording Device Variable Frame Rate Tagging
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Solution Overview
Problem
Existing video recording devices face challenges in reducing data size while maintaining important scenes at normal playback speed, as they record all scenes at the same frame rate, leading to large data sizes and inefficient storage.
Innovation Solution
A recording device that adjusts frame rates based on scene importance using a recording time conversion processor and tag range processor, thinning out frames in non-important scenes more aggressively than in important ones, allowing for variable frame rates to fit within a specified recording time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all scenes are recorded at the same frame rate, then important scenes can be played back at normal speed, but the recorded data size becomes large
Solution Approach 1:
The patent applies local quality by differentiating frame rate treatment based on scene importance. Important scenes (marked with tags) are recorded at the original frame rate for normal playback quality, while unimportant scenes are recorded at a lower frame rate. This selective approach ensures high quality where needed while reducing overall data volume.
Solution Approach 2:
The patent segments the video data into marked scenes (important) and unmarked scenes (unimportant). By dividing the video into these segments and applying different frame rate treatments to each segment, the system optimizes both playback quality for important content and storage efficiency for the entire video.
2Quantity of substance
If frame rate is reduced for all scenes, then recorded data size decreases, but important scenes cannot be played back at normal speed
Solution Approach 1:
The patent ensures that important scenes maintain their original frame rate and playback quality by applying the higher frame rate only to marked scenes. Unimportant scenes are recorded at reduced frame rates, achieving data size reduction without compromising the quality of important content.
3Quantity of substance
If variable frame rates are applied to different scenes, then recorded data size reduces, but device complexity increases
Solution Approach 1:
The patent performs preliminary action by marking important scenes during the recording process itself, rather than requiring post-processing analysis. The marking mechanism operates in advance, allowing the frame rate conversion processor to apply appropriate frame rates during recording without needing complex post-processing to identify important scenes.
Data Source
AI summary
A recording device includes an imaging unit that takes a video, a recording time conversion processor that converts a frame rate of specified video data in the video so as to adjust the video to fall within a specified recording time, and a tag range processor that sets a tag range where a tag can be assigned in accordance with a level of importance to the video data, and the recording time conversion processor converts a frame rate at a first thinning-out rate that thins out a frame in a first video data range where the tag range is not set in the video data, and converts a frame rate at a second thinning-out rate that thins out a frame in a second video data range where the tag range is set in the video data in accordance with the level of importance.