Navigation System Input Timing Control via Finger Velocity
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Solution Overview
Problem
Current navigation systems fail to accurately detect and respond to user input intentions, leading to premature system state changes and unsuccessful input operations due to automatic completion functions and unexpected pop-up screens, which are not synchronized with the user's input velocity or finger movement.
Innovation Solution
A method and apparatus that measure the interval and velocity of user input operations to adjust system state changes, using motion sensors to determine the user's finger distance and movement, setting a threshold distance to suspend or resume Human Machine Interface (HMI) actions based on calculated reference intervals, allowing for flexible accommodation of different user behaviors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the navigation system automatically completes input and grays-out buttons to disable some keys, then the auto-complete function works to suggest matching entries, but the user cannot stop current input operation even though an unexpected new screen appears, resulting in unsuccessful input operation
Solution Approach 1:
The patent applies dynamics by making the button enable/disable state changeable based on real-time finger position detection. The system transitions from a static grayed-out state to a dynamic state where buttons can be re-enabled when the user's finger moves away from the input area, allowing users to cancel auto-complete and continue input operations as needed.
Solution Approach 2:
The patent implements feedback by continuously monitoring finger position and using this information to control the enable/disable state of buttons. The system provides real-time feedback to the user through visual changes in button appearance, allowing the user to understand the current system state and adjust their input behavior accordingly.
2Loss of information
If the navigation system displays a pop-up screen just before user's input operation, then the system can notify users of important information, but the user cannot stop inputting action because the time interval between the start of user's action and the appearance of the pop-up screen is too short
Solution Approach 1:
The patent applies preliminary action by detecting finger position in advance and preparing the system state before the user actually inputs. The system can pre-position pop-up screens or other notifications to appear at optimal moments during the user's interaction sequence, rather than interrupting after input has begun.
Solution Approach 2:
The system dynamically adjusts the timing of pop-up screens based on real-time finger position detection. When the user's finger is detected to be in a specific position or movement pattern, the system can delay or advance notification display to minimize disruption to the input operation.
3Productivity
If the navigation system automatically moves to a new screen including address candidates when matching entries are listed, then the system provides navigation guidance, but the user cannot stop current input operation even though an unexpected new screen appears
Solution Approach 1:
The patent makes the screen transition dynamic by controlling when and how the new screen appears based on finger position. The system can delay screen transitions until the user's input operation is clearly complete, or provide visual indicators of upcoming transitions, giving users control over the navigation flow.
Solution Approach 2:
The system provides feedback to users about the current screen state and upcoming transitions through visual cues. This feedback mechanism allows users to understand when the system is ready for the next action and when they should expect a screen change, improving predictability and control.
Data Source
AI summary
A method and apparatus adjusts a timing of state change of an electronics apparatus having an input device by measuring user's input speed for the input device and a distance of user's finger from the input device. The method includes the steps of measuring a current interval CI between recent two input operations in a series of input operations conducted through the input device, calculating an average interval AI of the series of input operations, calculating a reference interval RI determined from the equation: RI=K×AI, where K denotes a proportional coefficient, determining whether a current interval CI is equal to or less than the reference interval, and suspending an occurrence of the second system state change until a first system state has been responded in case when the current interval CI is equal to or less than the reference interval RI.