Biometric Sensor Optical Link for Wireless Charging Data Reliability
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Solution Overview
Problem
Existing wireless charging systems face limitations in communication efficiency and reliability due to the use of power signals, which are restricted by the reception coil and susceptible to environmental noise.
Innovation Solution
The electronic device employs a biometric sensor with LEDs and light receiving units to enable wireless communication with a power transmission device, using optical communication methods when a specified wireless power signal is received.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If in-band communication using power signal is used for wireless charging control, then the electronic device can control wireless charging, but the type and amount of information that can be identified and received is restricted and the power signal is susceptible to noise from surrounding environments
Solution Approach 1:
The patent introduces an optical communication intermediary (light emitting diode and light sensor) to mediate between the electronic device and wireless charging device. This intermediary converts electrical signals to optical signals for communication, enabling more robust data transmission that is not susceptible to electromagnetic noise while maintaining the existing power signal-based charging control functionality.
2Ease of operation
If in-band communication using power signal is used for wireless charging control, then the electronic device can control wireless charging, but the communication is susceptible to noise from surrounding environments
Solution Approach 1:
The patent introduces an optical communication intermediary (light emitting diode and light sensor) to mediate between the electronic device and wireless charging device. This intermediary converts electrical signals to optical signals for communication, enabling more robust data transmission that is not susceptible to electromagnetic noise while maintaining the existing power signal-based charging control functionality.
Solution Approach 2:
The patent replaces the electromagnetic-based power signal communication system with an optical communication system for data exchange. This substitution eliminates susceptibility to electromagnetic interference and noise from surrounding environments while preserving the wireless charging control capability.
3Reliability
If optical communication is used instead of power signal-based communication, then communication robustness and reliability are improved, but additional components (LED and light sensor) are required
Solution Approach 1:
The patent makes the biometric sensor system multi-functional by enabling it to perform both its original biometric detection function and an additional optical communication function. The light emitting diode and light sensor components are integrated into the existing biometric sensor module, allowing a single component to serve multiple purposes and reducing overall system complexity.
Solution Approach 2:
The patent merges the optical communication functionality with the existing biometric sensor system. By combining the light emitting diode, light sensor, and biometric detection components into an integrated module, the patent reduces the number of separate components needed and simplifies the overall system architecture while achieving both biometric sensing and robust optical communication.
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 approach allows for more robust and reliable communication compared to traditional power signal-based methods, enabling faster data exchange and improved user information delivery between the electronic device and the wireless charger.
Implementation Method 1
a biometric sensor including at least one light emitting diode (LED) and at least one light receiving unit and obtaining biometric information using the at least one LED and the at least one light receiving unit
Implementation Method 2
when the electronic device is located within a specific distance from a power transmitting device such as a wireless charging pad, the electronic device may charge the battery of the electronic device, using an electromagnetic induction or resonance phenomenon between a transmission coil of a power transmitting device and a reception coil of the electronic device
Data Source
AI summary
An electronic device is provided comprising: a biometric sensor, including at least one light emitting diode (LED) and at least one light receiving unit, for acquiring biometric information by means of the at least one light emitting device and the at least one light receiving unit; a power receiving circuit configured to receive a wireless power signal from an external electronic device; and a processor operatively coupled to the biometric sensor and the power receiving circuit. The processor may be configured to receive a designated wireless power signal from the external electronic device by using the power receiving circuit and to perform optical communication with the external electronic device by using the biosensor when the designated wireless power signal is received. Other various embodiments identified from the specification are also possible.