Touch Input Priority Control for Mixed User Interaction
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Solution Overview
Problem
Existing input systems for touch devices, such as touch pads and keyboards, fail to effectively prevent input mixing when multiple users are interacting with both devices simultaneously, leading to unclear priority and potential errors in operation.
Innovation Solution
An input system that includes a processing unit to control a display unit based on operation information from either a first touch input unit or a second touch input unit, where operation information from the other unit is only used after a predetermined non-input time has passed, allowing for priority determination and prevention of input mixing by resetting or canceling priorities as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If operation information from both touch input units is used simultaneously, then input responsiveness is improved, but input mixing occurs causing unclear priority
Solution Approach 1:
The system performs preliminary action by determining priority between touch input units before processing their inputs. The processing unit identifies which touch input unit has priority based on timing or other criteria, and only uses operation information from the priority unit, preventing input mixing while maintaining responsive processing of the valid input
2Reliability
If operation information from one touch input unit is prioritized, then input mixing is prevented, but the other touch input unit becomes unresponsive
Solution Approach 1:
The system applies dynamics by making the priority relationship between touch input units changeable over time. After a predetermined period, the priority is reversed or reset, allowing the previously non-priority unit to become the priority unit. This dynamic adjustment ensures both units remain responsive while preventing simultaneous input mixing
Solution Approach 2:
The system implements periodic action by automatically switching priority between touch input units at predetermined time intervals. This periodic priority reversal ensures that each unit gets opportunities to respond while maintaining clear priority at any given moment, preventing input mixing without permanently disabling either unit
3Ease of operation
If priority switching between touch input units is implemented, then both units can be used effectively, but system complexity increases
Solution Approach 1:
The system applies self-service by automatically managing priority switching between touch input units without requiring user intervention. The processing unit autonomously determines priority, switches between units based on predetermined criteria or time intervals, and handles all priority management internally, reducing the perceived complexity for users while maintaining effective usability of both units
Data Source
AI summary
An input system includes a first touch input unit on which a touch operation is performed; a second touch input unit on which a touch operation is performed; and a processing unit configured to control display of a display unit using operation information that is acquired from any one touch input unit of the first touch input unit and the second touch input unit. The processing unit does not use operation information from an other touch input unit of the first touch input unit and the second touch input unit in display control for the display unit until a non-input time of the one touch input unit exceeds a first predetermined cancellation time, the non-input time of the one touch input unit being a time during which there is no input to the one touch input unit.