Gesture Resizing Rate Adaptation for Touch Panel Operability
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Solution Overview
Problem
Conventional information processing devices with touch panels often incorrectly interpret resizing gestures due to fixed expansion-reduction rates, leading to unintended object enlargement or reduction when transitioning from one-hand to two-hand operations or vice versa, affecting user operability.
Innovation Solution
An information processing device that uses a user motion detector to differentiate between one-hand and two-hand gestures, dynamically adjusting the expansion-reduction rate for resizing operations based on the detected hand mode, ensuring accurate reflection of user intent on the screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a fixed expansion-reduction rate is set for resizing operations, then the resizing operation is simple to implement, but the resizing result does not accurately reflect user intent when transitioning between one-hand and two-hand operations
Solution Approach 1:
The patent applies dynamics by making the expansion-reduction rate adjustable based on detected operation type. The system dynamically switches between a first expansion-reduction rate for one-hand operations and a second expansion-reduction rate for two-hand operations, allowing the resizing behavior to adapt to different user contexts rather than using a fixed rate.
Solution Approach 2:
The patent changes the parameter of expansion-reduction rate based on the detected operation type. When a one-hand operation is detected, the system sets the expansion-reduction rate to a first value; when a two-hand operation is detected, it sets the rate to a second value. This parameter change allows the system to accurately reflect user intent across different operating modes.
2Productivity
If a large expansion-reduction rate is set assuming one-hand operations, then one-hand resizing is efficient, but two-hand resizing causes excessive enlargement or reduction
Solution Approach 1:
The system dynamically adjusts the expansion-reduction rate based on the detected hand operation type. For one-hand operations, it uses a larger first expansion-reduction rate to maintain efficiency. For two-hand operations, it switches to a smaller second expansion-reduction rate to prevent excessive resizing, thus adapting to different operational contexts.
Solution Approach 2:
The patent changes the expansion-reduction rate parameter according to the operation type detected. When one-hand operation is detected, the rate is set to a first value that provides efficient resizing. When two-hand operation is detected, the rate is set to a second value that prevents excessive enlargement or reduction, optimizing both efficiency and accuracy for each scenario.
3Manufacturing precision
If a small expansion-reduction rate is set assuming two-hand operations, then two-hand resizing is accurate, but one-hand resizing requires repeated operations
Solution Approach 1:
The system dynamically selects the appropriate expansion-reduction rate based on the detected operation type. When two-hand operations are detected, it uses a smaller second expansion-reduction rate to ensure accuracy. When one-hand operations are detected, it switches to a larger first expansion-reduction rate to maintain efficiency, eliminating the need for repeated operations.
Solution Approach 2:
The patent adjusts the expansion-reduction rate parameter based on operation type detection. For two-hand operations, it sets the rate to a second value that provides accurate resizing. For one-hand operations, it sets the rate to a first value that maintains efficiency, thus optimizing both accuracy and productivity for different usage scenarios.
4Manufacturing precision
If the system detects operation type to adjust expansion-reduction rate, then resizing accuracy for different hand operations is improved, but the system complexity increases
Solution Approach 1:
The patent introduces an operation type detector as an intermediary component that identifies whether a one-hand or two-hand operation is being performed. This detector mediates between the user's physical gesture and the system's resizing response, enabling accurate selection of the appropriate expansion-reduction rate without requiring complex overall system restructuring.
Solution Approach 2:
The system changes the expansion-reduction rate parameter based on operation type detection results. By detecting whether a one-hand or two-hand operation is performed and accordingly setting the first or second expansion-reduction rate, the system achieves high resizing precision for different scenarios while maintaining relatively simple implementation through parameter adjustment rather than structural complexity.
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
An information processing device includes: an operation section; a user motion detection section detect to detect whether the gesture operation received by the operation receiver is the two-hand operation or the one-hand operation; an expansion-reduction setting section configured to set a size change associated with the resizing by the gesture operation to a first degree when the gesture operation for the object is the two-hand operation, and set a size change associated with the resizing by the gesture operation to a second degree which is greater than the first degree when the gesture operation for the object is the one-hand operation on a basis of a user operation detected by the user motion detector; a gesture analysis section configured to specify the gesture operation received by the operation receiver; and a display control section configured to reflect resizing of the object on the screen on a basis of the degree set by the expansion-reduction setting section when the gesture operation identified by the gesture analysis section is resizing.