Display Orientation Control for Mobile Device EMF Exposure
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Solution Overview
Problem
Existing mobile devices with communication units emit high-level electromagnetic waves, posing health risks, and current solutions that involve multiple antennas to mitigate this issue increase costs and hinder miniaturization.
Innovation Solution
An information processing unit with a communication function that includes an operation unit, a communication unit, and a display unit, where the control unit changes the orientation of the image on the display unit to alert the user when the communication unit is activated, prompting the user to adjust the device's posture to minimize exposure to electromagnetic waves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If multiple antennas are used to mitigate electromagnetic wave exposure, then health safety is improved, but device cost increases and miniaturization is hindered
Solution Approach 1:
The patent extracts the harmful electromagnetic radiation function from the communication unit by controlling it to operate only when the display is in a safe orientation away from the user's body, rather than using multiple antennas to distribute and reduce exposure
Solution Approach 2:
The control unit continuously monitors the orientation of the display relative to the communication unit and provides feedback control by enabling or disabling communication functions based on whether the display is in a safe orientation, thereby dynamically managing electromagnetic exposure
2Object-affected harmful factors
If multiple antennas are used to mitigate electromagnetic wave exposure, then health safety is improved, but miniaturization is hindered
Solution Approach 1:
The solution removes the need for additional antenna components by using software-based control of the existing communication unit's operation based on display orientation, thereby maintaining compact device volume
Solution Approach 2:
The existing communication unit is made multi-functional by enabling it to serve both communication purposes and act as a controllable electromagnetic radiation source that can be selectively activated based on display orientation, eliminating the need for separate antenna components
3Object-affected harmful factors
If the communication unit is controlled to reduce electromagnetic exposure, then health safety is improved, but communication functionality may be restricted
Solution Approach 1:
The communication unit's operational state is made dynamic, switching between active and inactive states based on real-time display orientation detection, allowing full communication functionality when safe and complete restriction when unsafe
Data Source
AI summary
An information processing unit is configured so that in a case where a display-rotating button 4 or 11b is operated by a user so as to select a second display mode, and where either a communication unit 5 or 13 is in an activated state and the user does not halt the action of the communication unit 5 or 13, the display mode is shifted to a mode other than the second display mode. Thereby, it is possible to urge the user to change the posture of a main body 1.