Keyword-Based Non-Linear Video Navigation System
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Solution Overview
Problem
Conventional video streaming and audio/visual content navigation systems require linear navigation methods, making it difficult for users to find specific portions of interest within a program, as they lack intuitive keyword-based navigation capabilities.
Innovation Solution
A program navigation system that utilizes a mobile device to extract keywords from audio/visual content in real-time, allowing users to jump directly to specific portions of a video stream by selecting keywords displayed on a user interface, with the system comprising a TV set and a mobile device communicating via a network to implement keyword-based navigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If linear navigation methods are used (play, fast forward, rewind), then the system maintains simple device structure, but the user cannot efficiently locate specific portions of interest within the program
Solution Approach 1:
The system performs preliminary extraction of keywords and their corresponding time markers from the entire program before the user needs to search. This allows the user to directly jump to desired segments without linear scanning, as the navigation data is prepared in advance.
Solution Approach 2:
The patent introduces an intermediary layer (keyword extraction module and time marker system) between the user and the video content. Instead of directly navigating through the video stream, users interact with extracted keywords that mediate the navigation process, enabling efficient access to specific portions.
2Ease of operation
If chapters are provided in DVD or downloaded programs, then the program is divided into manageable sections, but the viewer still needs to play or fast forward through at least some chapters to find the specific portion of interest
Solution Approach 1:
The system segments the program content by extracting meaningful keywords and associating them with specific time markers. This creates a fine-grained segmentation that goes beyond traditional chapter divisions, allowing users to navigate directly to specific scenes or moments within chapters.
Solution Approach 2:
The patent replaces the mechanical chapter-based navigation system with an information-based keyword navigation system. Instead of relying on physical or structural chapter divisions, the system uses extracted keywords and their temporal positions to enable direct access to content.
3Measurement precision
If the program is divided into many small segments for precise navigation, then the user can locate specific portions more accurately, but the navigation system becomes more complex
Solution Approach 1:
The system extracts only the essential navigation elements (keywords and time markers) from the full program content. This selective extraction provides precise location information without requiring the entire program structure to be reorganized or made accessible to the user.
Data Source
AI summary
In one example embodiment, a program navigation system involves a television (TV) set (or other audio/visual presentation device) and a mobile device. While the TV set is playing an audio/visual program, a keyword recognition module may extract keywords from textual data associated with the program. The textual data may include textual words that match words spoken in the program. Time markers for the keywords may also be saved. A time marker may indicate a play time within the program for the corresponding keyword. The TV set may automatically transmit the keywords to the mobile device, and the mobile device may automatically display the keywords in a user interface. A user may then select one of the keywords. In response, the mobile device may automatically cause the TV set to jump to a portion of the program containing the selected keyword. Other embodiments are described and claimed.