Dynamic Power Control for Audio DAC and Amplifier Units
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Solution Overview
Problem
Existing sound source output apparatuses with multiple digital to analog converters and amplifiers consume high power, necessitating a technique to minimize power consumption while maintaining sound quality.
Innovation Solution
A sound source output apparatus and method that detects terminal type and generates power control signals to manage power supply to conversion and amplification processing units, optimizing power usage based on the audio transmitting method, thereby reducing overall power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple digital to analog converters and amplifiers are used to improve sound quality, then sound quality is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic power control by detecting terminal connection states and adjusting the power supply to DACs and amplifiers in real-time. When no terminal is connected, all power blocks are turned off. When a terminal is connected, only the necessary number of DACs and amplifiers are activated based on the terminal type (balanced or unbalanced), enabling the system to adapt its power consumption to actual usage conditions while maintaining sound quality.
2Manufacturing precision
If all digital to analog converters and amplifiers are operated simultaneously, then audio signal purity is maximized, but power consumption becomes very high
Solution Approach 1:
The patent applies local quality by differentiating the operational state of different DACs and amplifiers based on their specific function and the connected terminal type. Instead of uniformly operating all components at full capacity, the system selectively activates only the necessary components (e.g., only balanced DACs when a balanced terminal is connected), giving each component a specific operational role that matches the actual audio output requirements, thereby reducing overall power consumption while maintaining audio signal purity.
3Use of energy by moving object
If power supply is controlled according to terminal type, then power consumption is minimized, but system complexity increases
Solution Approach 1:
The patent implements preliminary action by detecting the terminal connection state and determining the required audio transmitting method before actually activating the DACs and amplifiers. The terminal detecting unit identifies whether a balanced or unbalanced terminal is connected, and the power control unit pre-determines which power blocks need to be activated accordingly. This preliminary detection and control strategy simplifies the overall system operation by avoiding the need for complex real-time adjustments during audio playback.
Data Source
AI summary
An apparatus for outputting a sound source for minimizing power consumption and an operating method thereof are disclosed. The sound source output method includes a terminal detecting step of detecting connection and a type of a terminal; a power control processing step of generating a power control signal so as to correspond to an audio transmitting method according to the detected terminal type and controlling a power supply operation to a conversion processing unit and an amplification processing unit connected to a power source unit including at least one power block based on the power control signal; an audio signal generating step of generating at least one audio signal by performing signal converting and amplifying operations based on the power supplied based on the power supply operation; and an audio outputting step of outputting a final audio signal generated using audio signals according to the audio transmitting method.