Audio Output Port Voltage Control for Lower Mobile Battery Drain
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Solution Overview
Problem
Mobile terminals consume unnecessary battery power due to constant provision of high power voltage to audio out ports regardless of the presence of audio signals, leading to rapid battery drainage during multimedia and video communication.
Innovation Solution
An apparatus and method that control the gain and power voltage of the audio out port by determining the presence of an audio signal in the audio frame, adjusting the voltage and gain accordingly to minimize power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high power voltage is continuously provided to audio out port, then output power is sufficient for audio signal transmission, but battery consumption increases unnecessarily when no audio signal is present
Solution Approach 1:
The patent applies dynamics by making the power voltage and gain of the audio out port adjustable rather than fixed. The system dynamically changes the power voltage level and gain value based on whether an audio signal is detected in the audio frame, transitioning between high power state (when audio signal present) and low power state (when no audio signal), thereby resolving the contradiction between maintaining sufficient output power and reducing battery consumption
Solution Approach 2:
The patent changes the parameters of power voltage and gain based on the presence of audio signals. When an audio signal is detected, the system sets power voltage to a first level and gain to a first value; when no audio signal is present, it reduces power voltage to a second level and gain to a second value. This parameter adjustment strategy allows the system to maintain adequate audio output when needed while minimizing power consumption during idle periods
2Power
If high gain is set for audio out port, then output power increases, but battery consumption increases due to excessive internal controlling operations
Solution Approach 1:
The patent applies partial action by setting the gain to different values based on actual audio signal presence. Instead of maintaining high gain continuously, the system applies high gain only when audio signals are detected and reduces gain when no signals are present. This partial application of high gain ensures sufficient audio output during active periods while avoiding excessive energy loss during idle periods
Data Source
AI summary
An audio output controlling apparatus and method, and a mobile terminal system using the same control settings of an audio out port according to whether an audio frame includes an audio signal. The audio output controlling method includes receiving an audio frame, determining whether an audio signal is included in the audio frame, and setting, depending on whether the audio signal is included in the audio frame, a power voltage provided to an audio out port. The mobile terminal includes a wireless transceiver; an audio unit, through an audio out port, an audio frame among the wireless data; and an audio output controlling unit to control a power voltage of the audio out port. The apparatus includes a section determining unit; and a power controlling unit to set a power voltage provided to an audio out port according to whether the audio signal is included in the audio frame.