EM Sensing Circuit for External Device Identification
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Solution Overview
Problem
Electronic devices struggle to distinguish a specific target device among multiple devices of the same type, hindering interoperation services like information sharing and device control.
Innovation Solution
An electronic device equipped with an electromagnetic (EM) sensing circuit, a processor, and memory stores reference EM profiles to identify and locate external devices based on their unique EM signals, enabling the establishment of wireless connections for control and communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If EM signal recognition is used to identify external devices, then device type identification is improved, but device differentiation among same-type devices deteriorates
Solution Approach 1:
The patent segments the identification process into two levels: first using EM signal characteristics to identify device type, then using additional individual identification information (device ID, model number, serial number) to differentiate among same-type devices. This segmentation resolves the contradiction by handling type identification and individual differentiation as separate but complementary tasks.
Solution Approach 2:
The patent introduces an intermediary database or information storage mechanism that stores individual device identification information associated with EM signal profiles. When multiple devices of the same type are detected, the system queries this intermediary storage to retrieve specific device identifiers, thereby resolving the information loss about individual device identity.
2Adaptability or versatility
If multiple external devices of the same type are present, then device availability increases, but target device selection difficulty increases
Solution Approach 1:
The patent applies local quality by assigning unique identification characteristics to each device while maintaining common EM signal characteristics for same-type devices. This allows the system to recognize the general category (shared quality) while simultaneously distinguishing individual devices (local unique quality), resolving the contradiction between versatility and identification difficulty.
Solution Approach 2:
The patent metaphorically applies 'color changes' by varying identification markers or signals for different devices of the same type. Each device may have unique identification information that acts as a distinguishing marker, allowing users to differentiate between devices while maintaining type-level compatibility.
3Adaptability or versatility
If EM sensing circuit is added to detect EM signals, then device identification capability is improved, but device complexity increases
Solution Approach 1:
The patent makes the EM sensing circuit multi-functional by using it not only for device identification but also for determining device location, orientation, and other spatial information. This universal application justifies the added hardware complexity by extracting multiple useful parameters from a single sensing component.
Solution Approach 2:
The EM sensing circuit performs self-service by automatically detecting and analyzing EM signals from external devices without requiring manual configuration or additional user intervention. The system autonomously processes the raw EM signals to extract identification information, reducing the operational complexity despite increased hardware capabilities.
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 allows for effective identification and control of specific external electronic devices among multiple devices of the same type, facilitating seamless interoperation and user services.
Implementation Method 1
components included in an electronic device may emit a unique EM signal when operating
Data Source
AI summary
An electronic device according to an embodiment of the present disclosure may include a housing, a touch screen display exposed through a portion of the housing, at least one wireless communication circuit, an electromagnetic (EM) sensing circuit configured to sense an EM signal having a frequency band of 1 MHz or less, a processor operatively connected to the display, the wireless communication circuit, and the EM sensing circuit, and a memory configured to store at least one reference EM profile and information about at least one external access point and operatively connected to the processor, wherein the memory may store instructions that cause, when executed, the processor to obtain an EM signal from an external electronic device via the EM sensing circuit, identify a reference EM profile corresponding to the obtained EM signal based on the at least one reference EM profile, determine a location of the electronic device at least partially based on information about an external access point connected to the electronic device via the at least one wireless communication circuit, identify the external electronic device at least partially based on the identified reference EM profile, and display a graphic user interface (GUI) on the touch screen display at least partially based on information about the identified external electronic device.