Touch Screen Media Scrubbing via Variable Speed Gesture Control
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Solution Overview
Problem
Mobile devices with limited display space struggle to enable precise editing of long media files, as users find it difficult to accurately navigate and select specific frames for editing or playback due to the constraints of their small user interfaces.
Innovation Solution
A method and apparatus that allow users to scrub through media files using swiping gestures on a touch screen, where the speed and direction of the gesture determine the movement of a playhead, enabling precise frame selection by calculating the number of frames to move based on the gesture's speed, distance, and inflection value, with options for continuous gesture adjustments and playback initiation upon gesture removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If users manually navigate through media files frame by frame on mobile devices, then precise frame selection is achieved, but time consumption increases significantly
Solution Approach 1:
The patent implements dynamic frame navigation where the playhead movement speed automatically adjusts based on user interaction state. During drag operations, the playhead moves at variable speeds corresponding to drag velocity, allowing users to quickly traverse large portions of media files while maintaining the ability to slow down and precisely position at desired frames, thus resolving the contradiction between precision and time consumption
Solution Approach 2:
The system enables users to rapidly skip through media files during drag operations, allowing quick navigation past irrelevant portions. The playhead can be moved efficiently through large time spans by simply dragging, and only slows down for precise positioning when needed, significantly reducing overall time consumption while maintaining selection precision
2Ease of operation
If the playhead moves at constant speed regardless of gesture, then simple control logic is maintained, but user control precision deteriorates
Solution Approach 1:
The playhead movement transitions from constant speed to variable speed based on drag gesture characteristics. The system calculates playhead position dynamically during drag operations, adjusting movement speed to match user intent - faster movement during large drags and slower, more precise movement during fine-adjustment drags, thereby maintaining both ease of operation and precision
Solution Approach 2:
The system provides visual feedback through the moving playhead indicator that reflects real-time calculation of frame positions based on drag gestures. This feedback mechanism allows users to observe playhead movement and adjust their dragging accordingly, achieving precise frame selection while maintaining simple gesture-based control
3Device complexity
If standard touch interface elements are used for media navigation, then interface simplicity is maintained, but navigation efficiency deteriorates on small screens
Solution Approach 1:
The patent transforms the traditional one-dimensional slider interaction into a two-dimensional drag gesture system. Users can drag vertically or horizontally across the media player interface, creating a more intuitive and efficient navigation method that leverages the full touch screen area rather than being constrained to a single slider element, thus improving navigation efficiency without significantly increasing interface complexity
Data Source
AI summary
A method, apparatus and computer program product are provided for enabling scrubbing of a media file. Swiping gestures of varying speeds and directions may applied to a touch screen display such that a playhead indicating a selected frame of a media file moves at speeds relative to the swiping gesture, and in a direction of the swiping gesture. When the swiping gesture falls below a threshold speed, fine control in frame-by-frame increments is enabled. A user may therefore select a precisely desired frame for purposes such as playback and/or video editing, with a continuous swiping gesture and in as small as a space as provided by the touch screen display of a mobile device.