Media Playback Processor Wake-Up for Low-Power Command Response
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Solution Overview
Problem
Conventional devices maintain full power to electronic components even when idle, leading to significant power consumption without noticeable lag, which is inefficient and wasteful.
Innovation Solution
Implement power management techniques that put electronic components to sleep when not in use and wake them up only when specific commands are likely to be invoked, using various sleep states for the processor and network interface components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If full power is maintained to electronic components even when idle, then quick response time is achieved, but power consumption increases significantly
Solution Approach 1:
The system performs preliminary actions by monitoring for specific conditions (such as detecting a controller device or receiving a wake-up command) before activating the processor. This allows the processor to remain in a low-power state until needed, while still being ready to respond quickly when the predetermined condition is met.
Solution Approach 2:
The system dynamically adjusts the power state of the processor based on operational needs. The processor transitions between awake and sleep states depending on whether a controller device is detected or a wake-up command is received, optimizing the balance between power consumption and response time.
2Ease of operation
If processor is kept awake to avoid lag, then user experience is maintained, but power efficiency deteriorates
Solution Approach 1:
The system performs preliminary monitoring for controller devices and wake-up commands while the processor is in a low-power state. This preliminary action ensures that when a user interacts with the system, the processor can wake up quickly without significant lag, maintaining good user experience while improving power efficiency.
Solution Approach 2:
The system uses the network interface component to autonomously detect the presence of controller devices and generate wake-up events without requiring the processor to remain continuously active. This self-service mechanism maintains user experience while allowing the processor to conserve power.
3Loss of energy
If processor enters sleep state to save power, then power consumption is reduced, but system responsiveness worsens
Solution Approach 1:
The network interface component performs preliminary monitoring for wake-up conditions (controller device presence or wake-up commands) while the processor is sleeping. When such conditions are detected, the processor is woken up immediately, minimizing the actual wake-up delay and maintaining system responsiveness.
Solution Approach 2:
The network interface component acts as an intermediary between the external environment (controller devices, wake-up commands) and the sleeping processor. It monitors for activation conditions and triggers processor wake-up events, enabling the processor to remain in a low-power state while still responding quickly to user interactions.
Data Source
AI summary
According to at least one aspect, power management techniques are disclosed that may reduce the power consumption of devices, such as those devices in media playback systems, without introducing a noticeable lag between a user issuing a command and the device processing the command. In some embodiments, the device may put to sleep (including turn off) electronic components that are only used for specific commands. In these embodiments, the devices may identify periods where the specific commands are likely to be invoked and, in response to identifying such a period, wake-up the electronic components. As a result, the power consumption of the device may be substantially reduced because various electronic components may be put to sleep instead of remaining idle in an awake state.