Biometric Sensor Optical Link for Wireless Charging Data Transfer
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Solution Overview
Problem
Existing wireless communication methods using portable electronic devices are limited by the restrictions on the type and amount of information that can be transmitted through power signals, and are susceptible to noise from the environment, especially when using power signals for wireless charging.
Innovation Solution
Incorporating a biometric sensor with a light emitting diode (LED) and light receiving unit in electronic devices to enable optical communication with external devices, allowing for more robust and reliable data transfer by using the biometric sensor to detect biometric information and communicate with wireless chargers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If in-band communication using power signal is used for wireless charging control, then wireless charging can be controlled, but the type and amount of information that can be transmitted is restricted and the signal is susceptible to noise
Solution Approach 1:
The patent introduces an optical communication intermediary (light emitting unit and light receiving unit) to mediate between the wireless charging system and data communication requirements. This intermediary enables parallel optical communication channels that do not interfere with the electromagnetic power transfer, allowing full information transmission capacity while maintaining charging control through the original power signal channel.
2Ease of operation
If in-band communication using power signal is used for wireless charging control, then wireless charging can be controlled, but the signal is susceptible to noise from surrounding environments
Solution Approach 1:
The patent segments the communication functions into two independent channels: electromagnetic power signal channel for charging control and optical signal channel for data communication. This segmentation isolates the charging control function from environmental noise affecting optical communication, while the optical channel provides noise-immune data transmission parallel to the power transfer process.
3Productivity
If biometric sensor is used for optical communication, then communication speed and reliability are improved, but device complexity increases
Solution Approach 1:
The patent implements multi-functionality by enabling the biometric sensor to operate in dual modes: traditional biometric detection mode and optical communication mode. The same light emitting and light receiving units serve both purposes, eliminating the need for separate communication hardware and reducing overall device complexity while achieving high-speed 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 enables faster and more reliable communication between electronic devices and wireless chargers, providing a means to transmit various pieces of information while maintaining wireless charging functionality.
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
obtain at least part of light reflected by the living body among the light output through the light emitting unit, using the light receiving unit
Implementation Method 3
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
Implementation Method 4
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
Implementation Method 5
a biometric sensor including at least one light emitting diode (LED) and at least one light receiving unit
Implementation Method 6
at least one light receiving unit... detect the biometric signal based at least partly on the obtained light
Data Source
AI summary
Disclosed is an electronic device 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.