Video Storage Device Playback Timing Control
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Solution Overview
Problem
Video mixers struggle to dynamically adjust the progress of a stored video sequence in response to real-time changes in live video content during transitions, as the timing of the sequence playback is not synchronized with the operator-controlled video transitions.
Innovation Solution
A method where the timing of video playback from a storage device is varied in dependence on the progress of a video mixer transition, with the read or write address of the storage device adjusted accordingly, allowing for operator-controlled synchronization of video transitions and playback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the timing of video sequence playback is fixed according to original recording, then the video sequence can be played back smoothly, but the playback cannot be dynamically adjusted to match operator-controlled transitions in real-time
Solution Approach 1:
The patent applies dynamics by making the video sequence playback timing adjustable in real-time based on the progress of video transitions. The system dynamically modifies the playback rate or timing of stored video sequences to match the actual transition progress, allowing the playback to adapt to operator-controlled transition speeds rather than following a fixed predetermined schedule.
2Ease of operation
If the operator controls the transition progress independently, then the transition can be adjusted in real-time according to video content, but the stored video sequence playback progress becomes desynchronized from the transition
Solution Approach 1:
The patent implements feedback by continuously monitoring the actual progress of video transitions and using this information to adjust the playback timing of stored video sequences. The system feeds back the transition progress information to the playback control mechanism, creating a closed-loop system that maintains synchronization between the operator-controlled transitions and the accompanying video sequence playback.
Solution Approach 2:
The system achieves multi-functionality by having a single control mechanism serve dual purposes: controlling both the video transition progress and the playback timing of stored video sequences. This universal control approach allows one system to manage multiple related functions (transition control and sequence playback timing) that previously required separate independent controls.
Data Source
AI summary
A video mixer may be employed to form a transition between two video compositions, for example a fade or a wipe. A video storage device may be associated with the video mixer and plays out a video signal, the timing of which is controlled in dependence upon the progress of the transition made by the said video mixer.