Variable-Speed Trick-Play Playback for Automatic Event Navigation
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Solution Overview
Problem
Conventional playback systems lack the ability to automatically adjust trick-play modes to indicate moments of interest during media playback, requiring manual user intervention which may result in missing important events.
Innovation Solution
A playback device stores marker information indicating presentation times of moments of interest and adjusts playback speed dynamically based on the proximity to these markers, allowing for variable speed trick-play modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional playback systems use fixed speed trick-play modes, then the system complexity is low and operation is simple, but the user may miss important events and the reliability of event detection is poor
Solution Approach 1:
The system performs preliminary actions by pre-marking moments of interest in the media content and pre-calculating variable speed profiles before trick-play mode is activated. This allows the system to automatically adjust playback speed based on proximity to marked events, improving event detection reliability without requiring complex real-time processing during playback
Solution Approach 2:
The system implements dynamic playback speed adjustment during trick-play mode by continuously monitoring the current playback position relative to marked moments of interest. The playback speed varies dynamically - slowing down near marked events to improve event detection reliability, while maintaining simplicity through algorithmic control rather than hardware complexity
2Productivity
If manual user intervention is required to navigate to moments of interest, then the device complexity is low, but the loss of time increases and productivity decreases
Solution Approach 1:
The system provides feedback to the user during trick-play mode by indicating the proximity to marked moments of interest through visual or auditory cues. This feedback mechanism allows users to efficiently locate important events without manual searching, improving navigation efficiency and reducing time loss while maintaining simple device architecture
Solution Approach 2:
The system performs self-service by automatically navigating to and highlighting moments of interest during trick-play mode without requiring manual user intervention. The playback device autonomously adjusts speed and provides indicators for marked events, improving productivity and reducing time loss while keeping the device complexity manageable through software automation
3Ease of operation
If variable speed trick-play mode with marker detection is implemented, then the ease of operation improves and user experience is enhanced, but the device complexity increases
Solution Approach 1:
The system eases operation by pre-marking moments of interest and pre-configuring variable speed profiles before playback. This preliminary preparation eliminates the need for complex real-time user decisions during trick-play mode, enhancing user experience while managing device complexity through advance setup
Solution Approach 2:
The system changes playback speed parameters dynamically based on proximity to marked moments of interest. By algorithmically adjusting speed parameters rather than requiring complex hardware modifications, the system improves ease of operation and user experience while maintaining reasonable device complexity
Data Source
AI summary
Systems and methods for providing variable trick-play mode playback of media content in accordance with embodiments of the invention are disclosed. A playback device stores images of the media content associated with presentation times and marker information for the media content that indicates the presentation time of moments of interest. When a trick-play mode is invoked, the playback device determines a presentation time of a next marker in the playback. The playback device determines whether the current presentation time of the playback is within a specified range of the presentation time of the next marker and adjusts the speed of the trick-play playback based on the determination. The next frame to present is determined based on the adjusted speed of the trick-play playback and displayed.