Earphones with Activity Controlled Audio Output
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Solution Overview
Problem
Existing earphone technologies lack an accurate method to determine a user's activity state, such as falling asleep, which leads to inefficient sleep mode activation and battery waste, as they rely on user-set timers or single-sensor data, failing to account for varying sleep onset times and states.
Innovation Solution
Integration of a bio-sensor and motion sensor within earphones to determine a user's activity state by aggregating data over time, adjusting audio output based on learned states, heart rate changes, and location information, allowing for precise control of audio playback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If user-set timers are used to control audio playback, then the device can automatically stop playback, but the accuracy of detecting actual sleep state is poor leading to battery waste
Solution Approach 1:
The patent segments the sleep detection function into multiple independent sensor components: motion sensor for detecting body movement, bio-sensor for monitoring physiological signals, and ambient sound sensor for capturing environmental audio. Each sensor independently monitors a specific aspect of sleep state, and their combined data provides accurate sleep detection without requiring continuous high-power operation of all components, thus reducing battery waste while improving detection accuracy.
2Measurement precision
If multiple sensors are integrated into earphones, then the accuracy of activity state determination is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple sensors (motion sensor, bio-sensor, ambient sound sensor) and the audio processing functionality into a single integrated earphone device. The controller unit consolidates the processing of data from all sensors and coordinates with the audio output device to implement activity-based audio control. This merging approach improves activity state determination accuracy while managing device complexity through integrated design rather than separate components.
Solution Approach 2:
The earphone device is designed with multi-functionality, serving both as an audio playback device and as a comprehensive activity monitoring system. The same hardware components (sensors, controller, audio output) are used for both music playback and sleep/activity detection, eliminating the need for separate dedicated devices and reducing overall system complexity while maintaining high measurement precision.
3Use of energy by moving object
If activity-based audio control is implemented, then battery efficiency is improved, but the ease of operation decreases due to automatic control
Solution Approach 1:
The patent implements self-service functionality where the earphone system automatically monitors user activity state through integrated sensors and autonomously adjusts audio playback parameters (play/pause, volume) based on detected sleep or exercise states. The system serves itself by making control decisions without requiring explicit user commands, thereby improving battery efficiency through context-aware power management while maintaining operational simplicity for the user.
Solution Approach 2:
The system continuously monitors activity state through sensors and provides real-time feedback to the audio control system. This feedback loop enables automatic adjustment of audio playback based on current activity state (e.g., pausing when sleep is detected, adjusting volume during exercise). The feedback mechanism improves battery efficiency by enabling intelligent power management while keeping the interface simple, as users do not need to manually control each adjustment.
Data Source
AI summary
The present disclosure relates to an earphone apparatus and method. The earphone apparatus includes an earpiece, including a speaker, configured for arrangement relative to a user's ear for listening to audio from the speaker, a bio-sensor, a motion sensor, and a controller configured to determine an activity state of the user based on aggregated sensor data from the bio-sensor and the motion sensor over time, and to control audio output to the user based on the determined activity state.