Movement Amount Corrector for Non-Contact Input Misalignment
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Solution Overview
Problem
Users face misalignment issues with non-contact input operations on virtual operation surfaces in display apparatuses, as it is difficult to visually recognize the set virtual operation surface, leading to unintended input operations.
Innovation Solution
A display apparatus that acquires and corrects movement amounts in vertical and horizontal directions during user input operations on a virtual operation surface, determining whether the operation is predetermined and applying correction processing to reduce or ignore unintended movement amounts, thereby ensuring accurate input processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a non-contact input operation is accepted on a virtual operation surface, then the ease of operation is improved, but the measurement precision of input operation position deteriorates due to misalignment
Solution Approach 1:
The system calculates the ratio of movement amounts in the first direction (depth direction) and second direction (horizontal direction), and uses this feedback information to determine whether correction processing is needed. When the ratio falls within a predetermined range indicating potential misalignment, the system applies correction to the movement amount in the second direction, thereby improving measurement precision while maintaining ease of operation.
Solution Approach 2:
The system dynamically adjusts the processing parameters based on the movement characteristics. By changing the treatment applied to movement amounts in the second direction based on the calculated ratio, the system adapts to different input scenarios. This parameter change approach allows the system to maintain high measurement precision for intended operations while preserving the ease of non-contact operation.
2Device complexity
If the virtual operation surface is not visually recognized, then the device complexity is reduced, but the measurement precision of input operation position deteriorates
Solution Approach 1:
The system performs self-correction by automatically detecting misalignment conditions through movement ratio analysis and applying correction processing without requiring external intervention or visual feedback to the user. This self-service mechanism maintains high measurement precision while keeping the device complexity low, as the correction is performed internally based on movement characteristics alone.
3Measurement precision
If movement amount correction processing is applied, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The system applies correction processing selectively only when necessary, based on the calculated movement ratio. Rather than continuously applying complex correction algorithms, the system uses a simplified approach where correction is applied partially only when the movement ratio indicates misalignment conditions. This partial action approach improves measurement precision when needed while minimizing the increase in device complexity.
Data Source
AI summary
A display apparatus that includes a movement amount acquirer, a movement amount corrector, and an input processor is provided. The display apparatus acquires a first movement amount of a user's finger in a vertical direction with respect to a virtual operation surface and a second movement amount thereof in a horizontal direction. The display apparatus corrects the first movement amount or the second movement amount when it determines that the input operation is a predetermined operation, and inputs an input operation based on the first movement amount and the second movement amount. When it is determined that the input operation is to move the user's finger in the vertical direction with respect to the virtual operation surface, the display apparatus corrects the second movement amount.