Picture-in-Picture Replay Window for DVR Live Synchronization
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Solution Overview
Problem
Users miss live program content when invoking instant replay in digital video recorders (DVRs) as the system either jumps ahead or continues playing behind the current live position, causing an unacceptable lag.
Innovation Solution
A picture-in-picture window is created in response to a replay command, allowing simultaneous display of live video content and replayed content, ensuring the user does not miss any part of the live program while viewing the replayed portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the DVR jumps ahead to current live position after replay, then the user can watch replay content, but the user misses the live program content that occurred during replay
Solution Approach 1:
The display screen is segmented into two distinct regions: a main display area showing replay content and a picture-in-picture window showing live program content. This segmentation allows both replay and live content to be viewed simultaneously without one replacing the other, thereby preventing information loss while maintaining replay functionality.
Solution Approach 2:
The picture-in-picture window is nested within the main display area, creating a hierarchical display structure. The live program content is embedded within the replay view, allowing users to access both content streams simultaneously. This nesting approach enables the coexistence of replay and live content without requiring separate full-screen displays.
2Loss of information
If the DVR continues playing with a ten-second lag after replay, then the user does not miss live content, but the user is no longer watching the program live and accumulates lag with each replay
Solution Approach 1:
The display is segmented to show replay content in the main area while simultaneously showing live content in a picture-in-picture window. This segmentation eliminates the need to choose between replay and live content, allowing users to view both without accumulating time lag while maintaining synchronization with the live program.
3Loss of information
If a picture-in-picture window is used for replay, then the user can view both replay and live content simultaneously, but the device complexity increases
Solution Approach 1:
The display system is designed to serve multiple functions: it can display full-screen replay content, full-screen live content, and a combined view with picture-in-picture windows. This multi-functionality is achieved through software control of the display controller, which can dynamically adjust the display layout without requiring additional hardware components, thereby managing complexity while providing enhanced functionality.
Data Source
AI summary
A picture-in-picture window is opened in response to a user-entered replay command received while displaying a live state of video content on a screen. At least a portion of the video content is replayed on one of the screen and the picture-in-picture window while continuing displaying of the live state of the video content in the other of the screen and the picture-in-picture window.