Presentation Highlight Control via Score Thresholding
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Solution Overview
Problem
Existing presentation supporting technologies face issues with false sound recognition leading to flapping of highlight displays, where the highlight moves back to the wrong part after moving away from the presenter, due to limitations in sound recognition accuracy and delayed or incorrect movement of the highlight display.
Innovation Solution
A presentation supporting device that extracts words from document pages, performs sound recognition, and calculates scores to determine when to transition the highlight display based on frequency data, ensuring the highlight remains focused on the correct region by holding transitions until the recognition score reaches a certain threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If sound recognition is used to associate image data to sound data, then automatic highlighting is enabled, but false recognition causes highlight display to flap
Solution Approach 1:
The system performs preliminary actions by calculating scores for multiple candidate regions in advance and preparing a sequence of potential highlight destinations. When false recognition occurs, the system can switch to previously calculated alternative candidates rather than immediately flapping back, thus maintaining stability while preserving automation.
Solution Approach 2:
The patent introduces an intermediary mechanism (score calculation and candidate selection system) between sound recognition and highlight display. This intermediary evaluates multiple candidates and selects the most appropriate one, preventing direct and erroneous highlight transitions caused by false recognition while maintaining automatic operation.
2Reliability
If weight inversely-proportional to distance from highlighted part is assigned to control flapping, then highlight stability improves, but movement to far parts is delayed or fails
Solution Approach 1:
The system dynamically adjusts the weighting strategy based on the specific situation. Instead of using a fixed inverse-distance weight, the system calculates scores for multiple candidate regions and can select candidates at various distances appropriately. This dynamic approach maintains stability for nearby candidates while enabling timely movement to distant candidates when appropriate.
Solution Approach 2:
The patent changes the parameter of weight assignment from a fixed inverse-distance formula to a flexible scoring mechanism that considers multiple factors. This parameter change allows the system to adaptively select highlight destinations at any distance based on content relevance rather than being constrained by distance-based weighting, thus resolving the contradiction between stability and movement speed.
3Area of stationary object
If highlight display moves to far parts, then coverage of presented content improves, but movement delay increases greatly
Solution Approach 1:
The system performs preliminary calculations for multiple candidate regions including distant parts before they are needed. When the presenter moves to distant content, the system can immediately transition to pre-calculated candidates rather than computing in real-time, thus achieving wide coverage without significant movement delay.
Data Source
AI summary
A presentation supporting device extracts a first word from a character string included in each region divided from a page of a document file, and calculates a score, for each region in a page currently-displayed, based on the first word and a second word acquired as a result of a sound recognition, and calculates, when the highest score of scores is equal to or higher than a first threshold, a distance between a first region in which the highlight display is currently executed and a second region in which the highest score is equal to or higher than the first threshold, and executes a highlight display in the second region when a frequency corresponding to the distance between the first region and the second region is equal to or higher than a second threshold, and executes a highlight display in the first region, when the second threshold is not reached.