Audio-Assisted Device Pairing Using Relative Distance Detection
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Solution Overview
Problem
Existing device pairing methods, such as infrared (IR) communication, face limitations due to line-of-sight requirements and lack of distance-based device selection, particularly when multiple devices need to be paired, necessitating improvements in pairing processes for efficient device connection.
Innovation Solution
Implementing Bluetooth Low Energy (BLE) protocols with audio signals inaudible to humans to determine the relative distance between devices, allowing for automatic pairing based on measurable characteristics like volume or clarity, enabling more reliable and efficient device connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If infrared (IR) communication is used for device pairing, then pairing can be established between devices, but line-of-sight requirements limit the pairing process and reduce reliability
Solution Approach 1:
The patent introduces an intermediary mechanism by using audio signals as a mediator between devices for distance determination. The audio signal acts as a carrier that conveys distance information without requiring direct line-of-sight between device components, thus resolving the contradiction between pairing reliability and ease of operation.
Solution Approach 2:
The patent replaces the mechanical/optical alignment requirement of IR communication with an acoustic field-based distance measurement system. By substituting the line-of-sight optical mechanism with audio signal propagation, the system eliminates the need for precise physical alignment while maintaining pairing functionality.
2Adaptability or versatility
If traditional pairing methods are used without distance measurement, then pairing process is simple, but the ability to select the most suitable device based on distance is lost
Solution Approach 1:
The patent implements feedback by having devices send audio signals and measure the received signal characteristics (volume, clarity) to determine relative distance. This feedback loop provides distance information that enables intelligent device selection, allowing the system to adaptively choose the most suitable device based on measured parameters without significantly increasing complexity.
Solution Approach 2:
The patent changes the parameter space by introducing measurable audio characteristics (volume, clarity, frequency) as new parameters for device selection. By utilizing these additional parameters, the system gains the capability to distinguish and select devices based on distance and signal quality, enhancing adaptability while maintaining manageable complexity through standard audio processing techniques.
3Measurement precision
If audio signals are used to determine relative distance, then device selection based on distance becomes possible, but additional measurement and processing steps are required
Solution Approach 1:
The patent applies self-service by having each device independently measure the audio signal characteristics received from other devices and autonomously determine relative distance. Each device performs its own measurement and evaluation, eliminating the need for complex centralized processing while achieving precise distance measurement through distributed self-measurement.
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 method enhances device pairing by overcoming line-of-sight issues and selecting the most suitable device based on distance, improving the reliability and efficiency of the pairing process, especially in scenarios with multiple devices.
Implementation Method 1
the first device turns on its microphone and requests an audio signal, such as an audio signal that is inaudible to a human, from each of the other devices. The first device will measure the audio signal from each of the other devices and based upon a measurable characteristic, such as volume, clarity of audio, etc.
Data Source
AI summary
Described are systems and methods for enabling an audio assisted connection between a device and appliances, networks, and the like by way of determination of relative locations. A device utilizes a microphone and/or speaker to communicate with a target device to ensure that the two devices are within sufficient proximity to ensure a proper connection.