Mobile Terminal Playback Control with Reference Frame Display
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Solution Overview
Problem
Conventional multimedia playback-enabled mobile terminals do not display progressing frames during fast forward or rewind operations, making it difficult for users to accurately position playback, resulting in inefficiency and wasted time.
Innovation Solution
A multimedia playback control method and apparatus for mobile terminals that determine if a fast forward or rewind command is input, display reference frames, and restart playback from the correct position upon releasing the command, allowing for efficient playback positioning by transmitting playback control information messages to a contents server and receiving reference frames in sequential order.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fast forward or rewind function is provided for playback positioning, then playback control capability is improved, but user cannot check progressing frames resulting in inefficient positioning
Solution Approach 1:
The system provides visual feedback by displaying progressing frames during fast forward and rewind operations. As the playback position changes, corresponding frames are displayed in real-time, allowing users to visually track their navigation progress and accurately identify desired playback positions without wasting time searching.
Solution Approach 2:
The progressing frames serve as an intermediary visual element between the fast forward/rewind control and the final playback content. These frames provide a visual bridge that shows users what content they are navigating toward, enabling more intuitive and efficient playback positioning.
2Measurement precision
If reference frames are displayed during fast forward or rewind, then playback positioning accuracy is improved, but system complexity increases
Solution Approach 1:
Instead of implementing a completely new visualization system, the patent reuses existing frame data from the multimedia content itself. The progressing frames are copies of actual content frames that are already decoded and available in the system, eliminating the need for separate visualization hardware or complex rendering pipelines.
Solution Approach 2:
The existing frame buffer and display system, originally designed for normal playback, is made multi-functional by repurposing it to display progressing frames during fast forward and rewind operations. This eliminates the need for dedicated visualization components and reduces overall system complexity.
Data Source
AI summary
A multimedia playback control apparatus and method for a mobile terminal are provided and include an apparatus and method for determining whether a fast forward (FF) command or a rewind (REW) command is input while replaying multimedia content, displaying, if a fast forward command or a rewind command is input, reference frames of the multimedia content, determining whether a release command is input while displaying the reference frames, and restarting the playback of the multimedia content from a playback position corresponding to an instant at which the release command is input.