Vehicular Portable Device Gesture Control
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Solution Overview
Problem
Conventional vehicular portable devices require users to perform multiple operations, such as pressing a knob and selecting an icon, to display and transmit control signals to in-vehicle devices, making the process cumbersome and power-intensive.
Innovation Solution
A vehicular portable device equipped with an acceleration sensor to display icons upon detection of a threshold acceleration, a touch sensor for icon selection, and a pressure sensor to transmit control signals based on pressing force, allowing users to display icons and transmit commands with minimal effort, such as taking the device out of a bag or pocket.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple operation steps (pressing knob, selecting icon) are required to transmit control signals, then the device can reliably execute commands, but the operation process becomes cumbersome and time-consuming
Solution Approach 1:
The patent combines multiple operation steps into a single gesture by detecting acceleration patterns that represent both device activation and icon selection simultaneously. The acceleration sensor captures the motion characteristics when the device is taken out and moved, merging the functions of power-on, display activation, and command selection into one continuous motion sequence.
Solution Approach 2:
The system performs preliminary detection of acceleration patterns to pre-activate the display and prepare the interface before the user completes the selection gesture. By detecting the initial acceleration phase, the system proactively displays available commands and icons, reducing the perceived operation time and making the interaction feel more responsive.
2Ease of operation
If the display unit is activated to show icons for command selection, then the user interface becomes accessible, but power consumption increases
Solution Approach 1:
The display unit is activated periodically and temporarily only when acceleration patterns indicate a selection gesture is in progress. The system monitors acceleration continuously in a low-power state, and only activates the display when motion exceeds threshold values, maintaining accessibility while minimizing power consumption during idle periods.
Solution Approach 2:
The acceleration sensor automatically triggers display activation based on detected motion patterns without requiring separate button presses or manual power-on steps. The system serves itself by using the inherent motion data to determine when user interaction is intended, eliminating the need for additional power-consuming activation gestures.
3Speed
If conventional touch sensors are used for icon selection, then the interface is responsive, but additional operation steps are required increasing time consumption
Solution Approach 1:
The patent merges touch sensor input with acceleration sensor data to create a unified gesture recognition system. By combining positional information from the touch sensor with motion characteristics from the acceleration sensor, the system can distinguish between accidental touches and intentional selections, enabling faster and more accurate command execution without requiring separate confirmation steps.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Facilitates easier and more efficient operation by allowing icon display and command transmission with a single, intuitive action, reducing power consumption and simplifying the user interface.
Implementation Method 1
a display control unit that controls the display unit to display the icon when detecting that an acceleration equal to or greater than an activation threshold occurs in the vehicular portable device based on a signal output from the acceleration sensor
Implementation Method 2
a pressure sensor that detects a pressing force at an icon selection position, which is a position where the icon is selected by the touch sensor
Data Source
AI summary
In a vehicular portable device, a display unit is controlled to display an icon representing an instruction to an in-vehicle device when detecting that an acceleration equal to or greater than an activation threshold occurs in the vehicular portable device, a pressing force at an icon selection position, which is a position where the icon is selected by a touch sensor, is detected, and a control signal instructing execution of a command corresponding to the icon being selected is transmitted based on detection of the pressing force in a state where the icon is selected.