Double-Sided Touch Digital Device with Asymmetric Recognition Distances
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Solution Overview
Problem
Double-sided touch sensitive digital devices often experience touch errors when controlling operations using the rear-side touch, as it can be difficult to accurately recognize gestures due to the lack of direct observation.
Innovation Solution
A digital device with distinct valid recognition distances for front-side and rear-side touches, where the processor determines whether a touch input is valid based on predefined distances for each side, providing visual feedback to correct errors and ensure accurate input recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a uniform touch recognition distance is used for both front-side and rear-side touches, then the device structure is simple, but touch accuracy deteriorates due to rear-side touch errors
Solution Approach 1:
The patent applies local quality by setting different valid recognition distances for front-side and rear-side touch sensor units. The processor determines whether a touch input is valid based on predefined distances specific to each side, allowing optimized recognition parameters for each location rather than using a uniform distance for both sides.
2Reliability
If the valid recognition distance for rear-side touch is increased, then touch error is reduced, but the risk of误recognizing unintended touches increases
Solution Approach 1:
The patent implements feedback by providing visual feedback to the user when a touch input is recognized. The display unit displays changed positions of visual objects to indicate successful touch recognition, allowing users to confirm that the touch was correctly interpreted and providing immediate feedback on system response.
3Measurement precision
If different valid recognition distances are set for front-side and rear-side touches, then touch error is corrected, but the control system becomes more complex
Solution Approach 1:
The patent applies segmentation by separating the touch sensor units into front-side and rear-side units with distinct valid recognition distances. The processor handles each side independently with its own predefined distance parameters, dividing the complex task of touch recognition into manageable segments for each location.
Data Source
Figure 1~2a
Figure 2b
Figure 2c~3a
AI summary
Disclosed is a double-sided touch recognition digital device. The digital device includes a display unit to display a visual object, a front-side touch sensor unit to sense a touch input on a front side of the device, a rear-side touch sensor unit to sense a touch input on a rear side of the device, and a processor to control the display unit and the front-side and rear-side touch sensor units. The processor obtains a first reference position and second touch position on the front-side or rear-side touch sensor unit, obtains a distance between the first reference position and the second touch position, and determines whether or not the distance between the first reference position and the second touch position is within a valid recognition distance. The valid recognition distance for the rear-side touch sensor unit is longer than the valid recognition distance for the front-side touch sensor unit.