Time Shift Video Display Pause Indicator Management
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Solution Overview
Problem
Existing Personal Video Recorders (PVRs) require users to manually search for previous pause positions when resuming playback, lacking a seamless transition between pause, live, and time-shift modes, and inefficiently manage storage by storing multiple pause indicators.
Innovation Solution
Implementing a method that stores a pause start indicator to resume playback at the last pause position, allowing users to switch between live and time-shift modes easily, with a 'live' command for direct video signal input and Picture in Picture functionality, and optimizing storage by only keeping the latest pause indicator, enabling quick switching and efficient storage usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple pause start indicators are stored for successive pause commands, then the user can resume playback at any previous pause position, but the storage capacity is reduced and the device complexity increases
Solution Approach 1:
The patent extracts only the most recent pause start indicator from the recording medium, discarding older indicators. This allows the system to provide resume functionality for the latest pause position while minimizing storage requirements, resolving the contradiction between ease of operation and storage capacity.
Solution Approach 2:
The system discards older pause start indicators when a new pause command is received, keeping only the latest indicator. This discarding mechanism frees up storage space while maintaining the essential functionality of resuming playback, balancing storage capacity with operational convenience.
2Ease of operation
If multiple pause start indicators are stored for successive pause commands, then the user can resume playback at any previous pause position, but the device complexity increases
Solution Approach 1:
The system extracts and stores only the single most recent pause start indicator, eliminating the need to manage multiple indicators. This simplifies the device logic and data structures while still providing the essential resume functionality, resolving the contradiction between ease of operation and device complexity.
3Ease of operation
If the video signal is interrupted during pause mode, then the user can view the paused content, but the user cannot quickly return to live viewing without searching for the live position
Solution Approach 1:
The system performs preliminary action by storing a live position indicator whenever the video signal is interrupted during pause mode. This pre-stored indicator enables the user to quickly return to the exact live position without searching, resolving the contradiction between ease of operation and time loss.
4Quantity of substance
If only the latest pause start indicator is stored, then the storage capacity is optimized, but the user cannot resume at earlier pause positions
Solution Approach 1:
The system extracts and retains only the most recent pause start indicator, discarding older indicators to maximize storage capacity. This approach accepts a limitation in versatility (can only resume at the latest pause position) in exchange for optimizing storage, which is appropriate for certain application scenarios.
Data Source
AI summary
The invention refers to a method for a time shift display of a video signal wherein upon a pause command a received video signal is recorded on a recording medium, and upon a resume command the recorded video signal is provided to a display device while the received video signal is continued to be recorded. It is desired to improve such method. According to the invention successive pause start indicators are stored upon further pause commands, and upon further successive resume commands recorded video signal starting from the latest or a successively previous pause start indicator is provided to a display device.