Variable-Speed Trick-Play Playback Near Marked Moments
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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 moments of interest and adjusts playback speed based on proximity to these markers, incrementing or decrementing speed accordingly, and optionally displays a scrubber to indicate the next presentation time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual user intervention is used to control trick-play modes, then user control flexibility is maintained, but users may miss important events due to inability to automatically detect moments of interest
Solution Approach 1:
The system automatically detects moments of interest using marker information without requiring manual user intervention. The playback device self-adjusts trick-play speeds based on proximity to marked events, enabling reliable event detection while eliminating the need for continuous manual control.
Solution Approach 2:
The system uses marker information as feedback to automatically adjust playback behavior. By continuously monitoring proximity to marked moments of interest and dynamically changing trick-play speeds, the system ensures reliable event detection while reducing manual operational requirements.
2Speed
If constant high speed is used in trick-play mode, then users can quickly navigate through content, but users may overshoot moments of interest and miss important events
Solution Approach 1:
The system dynamically adjusts trick-play speeds based on real-time proximity to marked moments of interest. High speeds are used when far from events for quick navigation, while speeds automatically decrease near marked events to prevent overshooting, thereby maintaining both fast navigation and reliable event detection.
Solution Approach 2:
The system changes the playback speed parameter dynamically based on the distance to marked moments of interest. By modifying this critical parameter in response to proximity measurements, the system achieves both rapid content navigation and accurate event detection without overshooting important moments.
3Extent of automation
If variable speeds are implemented based on marker information, then automatic detection of moments of interest is achieved, but system complexity increases due to speed adjustment logic
Solution Approach 1:
The system implements automation by changing the playback speed parameter based on simple proximity calculations to marked events. This approach achieves high extent of automation through relatively straightforward logic that monitors distance to markers and adjusts speeds accordingly, without requiring complex control systems.
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.