Dynamic Power Configuration for Portable Audio Devices
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Solution Overview
Problem
Existing portable devices face limitations in power configuration, which can impact audio performance and battery life, as they typically rely on fixed voltage levels and instantaneous current draws, struggling to optimize power usage for different audio modes.
Innovation Solution
A portable device with a microcontroller that dynamically adjusts power configuration based on detected audio modes and external power availability, using a multi-stage power converter and switches to optimize voltage and current draws for improved audio performance and extended battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed voltage levels and instantaneous current draws are used, then device simplicity is maintained, but audio performance in high dynamic range modes is limited
Solution Approach 1:
The patent implements dynamic power configuration by switching between multiple voltage levels (e.g., 5V, 12V, 24V) and current draw settings based on detected audio modes. The system transitions from fixed power delivery to dynamic adjustment, where the power converter modifies voltage and current parameters in real-time according to audio signal characteristics and battery charge levels, thereby resolving the contradiction between adaptability and complexity.
Solution Approach 2:
The system changes power delivery parameters (voltage level, current draw) based on audio mode detection and battery state. By implementing multiple discrete voltage levels and current settings that can be dynamically selected, the system achieves adaptable audio performance across different operating conditions without requiring complete redesign of the power architecture.
2Adaptability or versatility
If higher current draw is used for high dynamic range audio modes, then audio performance is improved, but battery life is reduced
Solution Approach 1:
The system dynamically adjusts current draw based on the detected audio mode and remaining battery charge. When battery charge is high, the system permits higher current draws for high dynamic range audio modes. When battery charge drops below thresholds, the system automatically reduces current draw to conserve battery life, creating a dynamic balance between audio performance and battery duration.
Solution Approach 2:
The patent implements multiple current draw settings (e.g., low, medium, high) that are selectively applied based on battery state and audio mode requirements. This parameter-based approach allows the system to optimize the balance between audio performance and battery life by selecting appropriate current levels rather than using a fixed high current draw.
3Productivity
If dynamic power adjustment is implemented, then audio performance and battery life are optimized, but device complexity increases
Solution Approach 1:
The power configuration is segmented into discrete, predefined levels for voltage and current draw. Rather than implementing continuous analog adjustment, the system uses segmented power modes (e.g., low power mode, medium power mode, high power mode) with specific voltage and current characteristics. This segmentation simplifies control logic while achieving effective power optimization.
Solution Approach 2:
The power converter is designed to perform multiple functions: it can operate in fixed voltage mode for simplicity, dynamic adjustment mode for optimization, and supports both battery-powered and external power scenarios. This multi-functionality allows the same hardware architecture to serve different operational requirements without requiring separate dedicated circuits for each mode.
Data Source
AI summary
Techniques are described for dynamically changing a power draw from a power source of a portable device based on an audio output of the portable device. In an example, the portable device determines that an audio signal to be output by the portable device is associated with an audio mode. The portable device sets a voltage of a power converter of the portable device to a voltage level based at least in part on the audio mode. An amount of power is supplied from a power source of the portable device to the power converter based at least in part on the voltage level. In addition, the portable device outputs the audio signal based at least in part on the amount of power.