Wireless Device Security via Radio Field Intensity Thresholds
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Solution Overview
Problem
Existing electronic devices, such as multifunction peripherals (MFPs), face challenges in securely and efficiently executing functions over wireless connections, particularly when the radio field intensity is weak, as they risk becoming unusable or vulnerable to unauthorized access.
Innovation Solution
The implementation of a wireless-connection-establishment unit and a function execution unit that determine whether to execute functions based on the radio field intensity of the wireless connection, allowing execution only when the intensity meets specified thresholds, and rejecting requests when it does not, thereby enhancing security and convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the device executes functions over wireless connections regardless of radio field intensity, then convenience and accessibility are improved, but security performance deteriorates due to vulnerability to unauthorized access
Solution Approach 1:
The patent changes the parameter of radio field intensity threshold to control function execution. By dynamically adjusting whether to execute functions based on the measured radio field intensity compared to a predetermined threshold, the system resolves the contradiction between maintaining convenience (allowing execution) and ensuring security (restricting execution under weak connections).
2Adaptability or versatility
If the device executes functions when radio field intensity is weak, then accessibility is improved, but reliability deteriorates due to risk of unauthorized access
Solution Approach 1:
The system uses radio field intensity as a dynamic parameter to control accessibility. When intensity exceeds the threshold, functions are executable; when below, execution is restricted. This parameter-based control mechanism allows the device to adapt accessibility levels based on connection quality, resolving the contradiction between maintaining versatility and ensuring reliability.
3Reliability
If the device restricts function execution when radio field intensity is weak, then security performance is improved, but convenience deteriorates
Solution Approach 1:
The patent applies parameter change by using radio field intensity threshold comparison to dynamically control function execution. This resolves the contradiction by making convenience conditional on security parameters - when connection quality is sufficient, convenience is maintained; when insufficient, security restrictions are automatically applied.
Data Source
AI summary
An electronic device includes a wireless-connection-establishment unit and a function execution unit. The wireless-connection-establishment unit establishes a directly communicable wireless connection with another device. The function execution unit executes a function. The function execution unit executes the function requested from the other device via the wireless connection when a radio field intensity of the wireless connection established with the other device by the wireless-connection-establishment unit is equal to or more than a specified radio field intensity, and rejects execution of the function requested from the other device via the wireless connection when the radio field intensity of the wireless connection established with the other device by the wireless-connection-establishment unit is less than the specified radio field intensity.