Capacitive Touch Screen Loopback Signal Detection for Driver Safety
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The use of touch screens in vehicles and other settings poses safety hazards due to the potential for drivers or users to be distracted by multitasking, leading to safety risks and incorrect operations.
Innovation Solution
A control method and system that detects a loopback signal in a circuit connecting a capacitive touch screen and a device, determining the formation of a loop between the user and the screen to enable or disable specific functions, thereby preventing unsafe or unauthorized operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a touch screen is used for human-computer interaction, then user experience and convenience are improved, but safety hazards arise when users control the device during activities like driving
Solution Approach 1:
The patent introduces a loop detection mechanism as an intermediary between the user and the touch screen. This mechanism detects whether a loop is formed by the user's body connecting the touch screen to an external device, and based on this detection, controls whether touch input is accepted. This intermediary layer prevents unsafe operations during driving while preserving normal touch screen functionality.
2Ease of operation
If touch screen functions are enabled for all users, then accessibility and ease of operation are improved, but unauthorized access and incorrect operations may occur
Solution Approach 1:
The patent implements a feedback mechanism where the system detects the formation of a loop between the user, touch screen, and external device, and uses this feedback to dynamically control function accessibility. When a loop is detected indicating proper authorization, the system enables touch functions; when no loop is detected or an improper loop exists, the system disables or restricts functions. This feedback-based control ensures both accessibility for authorized users and protection against unauthorized access.
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
This solution effectively prevents multitasking and unauthorized access by determining user identity through loopback signals, enhancing safety and security by restricting functions to authorized users and ensuring correct operations.
Implementation Method 1
a capacitive touch screen
Implementation Method 2
detecting a loopback signal in the circuit
Data Source
AI summary
The present application provides a control method, apparatus and system. A method comprises: detecting a signal in a circuit; in response to detection of a loopback signal in the circuit, determining that a loop is formed by at least one part of a capacitive touch screen, a device and a user; and in response to formation of the loop, disabling or enabling a function corresponding to the at least one part of the capacitive touch screen. By use of the technical solution provided in the present application, formation of a loop is determined through detection of a loopback signal, thereby determining identity of the user, to disable or enable at least one function. In a scenario like driving, the user's multitasking can be effectively avoided, thereby improving security.