Wearable Sensor Data Transmission via Audio Jack Modulation
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Solution Overview
Problem
Current wearable devices and mobile applications lack the ability to effectively determine a user's context and environment, leading to inefficient use and potential distraction, as they do not utilize biometric and environmental sensor data to make contextually appropriate decisions.
Innovation Solution
A system and method that incorporates sensors in peripheral devices, such as headsets or earbuds, to collect data and transmit it to a mobile device, allowing for context detection and actionable decisions, including suppressing notifications, providing reminders, and monitoring user wellness, through a wired or wireless connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If wearable devices collect and transmit biometric data, then user context detection capability is improved, but device complexity increases
Solution Approach 1:
The patent uses the audio jack and existing audio processing infrastructure as an intermediary to transmit sensor data. The sensor output is modulated onto audio frequencies and transmitted through the audio jack, leveraging existing hardware pathways rather than requiring dedicated data transmission channels. This mediator approach enables context detection while avoiding direct complexity increases in the wearable device architecture.
Solution Approach 2:
The patent makes the audio jack serve multiple functions: traditional audio output and sensor data transmission. By encoding sensor data within the audio signal bandwidth and using the same physical connector for both purposes, the system achieves multi-functionality without adding separate dedicated interfaces, thereby improving context detection capability while maintaining device simplicity.
2Device complexity
If sensor data is transmitted through audio jack, then device complexity is reduced, but data transmission reliability deteriorates
Solution Approach 1:
The patent implements feedback mechanisms where the mobile device receives sensor data through the audio jack, processes it to determine user context, and can send control signals back to the wearable device. This bidirectional communication through the same audio pathway enables error correction, data validation, and adaptive transmission protocols that maintain reliability despite using a shared audio channel.
Solution Approach 2:
The system transmits sensor data by modulating it onto audio frequencies with excessive redundancy and error correction coding. By using more bandwidth and transmission resources than strictly minimum, the system ensures reliable data delivery through the audio jack without requiring complex dedicated communication hardware.
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
Enables real-time monitoring and context-aware actions, improving user experience by determining user activities, health impacts, and environmental conditions, thereby enhancing user interaction and lifestyle management.
Implementation Method 1
PPG (photoplethysmography) based solution for HR monitoring in earphones. PPG is an optical sensing technique that allows measurement of blood pulsation from the skin surface.
Data Source
AI summary
A system and method for device action and configuration based on user context detection from sensors in peripheral devices are disclosed. A mobile device includes an interface to receive sensor data from a sensor of a wearable peripheral device worn by a user. The mobile device further includes at least one processor to: identify an activity engaged in by the user based on the sensor data, detect a completion of the activity based on the sensor data, and configure the mobile device to generate a notification to the user in response to the detection of the completion of the activity.