Media Playback Clock Signal Segmentation for Trick Mode Synchronization
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Solution Overview
Problem
Existing media playback systems face challenges in simultaneously playing back multiple items of media data, particularly when one item is played back in trick mode, as they struggle to manage and synchronize the playback of residual media data.
Innovation Solution
The system employs separate clock signals from first and second system time clock counters to independently control and synchronize the playback of first and second media data, allowing for concurrent playback in trick mode, with options to synchronize or interrupt the second media data based on user selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single clock signal is used to control playback of multiple media items, then device complexity is reduced, but playback synchronization and trick mode operation become unreliable
Solution Approach 1:
The system divides the clock signal management into separate components by providing distinct clock signals (first clock signal and second clock signal) for different media items. This segmentation allows each media item to be controlled independently, enabling reliable trick mode operation and synchronization without requiring a single complex clock management system.
Solution Approach 2:
The patent introduces an additional dimension to clock signal management by using multiple independent clock signals instead of a single clock signal. This dimensional change from one clock source to multiple clock sources enables the system to handle multiple media items with different playback requirements simultaneously, resolving the contradiction between simplicity and reliability.
2Adaptability or versatility
If multiple media items are played back simultaneously with independent clock signals, then playback flexibility and trick mode operation are improved, but device complexity increases
Solution Approach 1:
The system implements dynamic playback control by allowing different media items to operate with independent clock signals that can be adjusted separately. This enables flexible trick mode operations (fast forward, reverse, pause) on individual media items while maintaining simultaneous playback, providing adaptability without requiring overly complex centralized control.
3Productivity
If the second media data playback is interrupted during trick mode of the first media data, then resource allocation is optimized, but user access to the second media data is delayed
Solution Approach 1:
The system performs preliminary actions by maintaining the playback state and position information of the second media data even when its actual playback is temporarily suspended during the first media data's trick mode operation. This allows the second media data to resume immediately when needed, optimizing resource allocation during trick mode while minimizing user-perceived access delay through pre-prepared state maintenance.
Data Source
AI summary
A method and apparatus to simultaneously play back first media data and second media data according to a selected method while the first media data is being played back in a trick play mode, wherein the second media data is independent from the first media data.