Resonator-Based Audio Accessory Message Detection
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Solution Overview
Problem
Portable electronic devices face power consumption issues due to continuous monitoring for control messages from audio accessories, which reduces battery life and is undesirable in low power modes.
Innovation Solution
The implementation of resonators tuned to specific frequencies for detecting control messages, allowing the device to operate in low power mode until a header message is detected, and then switching to a higher power mode to process control messages, using passive resonating elements and voltage comparators to generate output signals for processor actions without active power or high-frequency clock requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous monitoring for control messages is implemented, then control message detection capability is improved, but power consumption increases
Solution Approach 1:
The patent uses acoustic resonance (a form of mechanical vibration) to detect control messages. Resonators are tuned to specific frequencies corresponding to control message tones, allowing passive detection without active electronics. When a control message tone is present, the resonator vibrates and generates an output signal, enabling detection while consuming minimal power.
Solution Approach 2:
The resonators perform self-service by automatically detecting control messages through their inherent resonant properties. The passive resonating elements continuously monitor for control messages without requiring active power or high-frequency clock signals, as they naturally respond to their resonant frequencies when control message tones are present.
2Use of energy by moving object
If passive resonating elements are used for detection, then power consumption is reduced, but detection precision may be affected
Solution Approach 1:
The patent applies local quality by using multiple resonators, each tuned to a specific frequency corresponding to different control message tones. Each resonator has specialized properties for its specific frequency, allowing precise detection of different control messages while maintaining low power consumption. The resonators are distributed across different frequency zones to cover the full range of control message tones.
Solution Approach 2:
The patent uses parameter changes by varying the resonant frequency of different resonators to match different control message tones. Each resonator is designed with specific physical parameters (inductance, capacitance) that determine its resonant frequency, allowing the system to detect multiple different control messages using passive elements with different frequency parameters.
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 reduces power consumption by allowing devices to operate efficiently in low power modes while still enabling control message detection, thereby extending battery life and minimizing power usage.
Implementation Method 1
at least one resonator adapted to resonate at the particular frequency and to generate a corresponding output signal
Data Source
AI summary
According to one aspect, an electronic device adapted to be controlled by an audio accessory. The electronic device includes at least one resonator. Each resonator is tuned to respond to a particular frequency that corresponds to a particular message generated by the audio accessory. When the particular message is received, the corresponding resonator resonates to generate an output signal that controls the electronic device.