Playback Device Amplifier Activation by Proximity Detection
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Solution Overview
Problem
Existing digital audio systems face limitations in efficiently activating amplifiers in playback devices in response to user proximity, leading to delays in media content rendering and increased power consumption.
Innovation Solution
Implementing proximity sensors in playback devices to detect user movement and anticipate user input, activating amplifiers accordingly to reduce power consumption and minimize delays in media content rendering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the amplifier is activated continuously to ensure immediate media playback, then the response speed is improved, but the power consumption increases
Solution Approach 1:
The system performs preliminary actions by detecting user proximity through sensors (motion sensors, proximity sensors) and pre-activating the amplifier before the user actually interacts with the device. This anticipatory activation eliminates the delay that would occur if the amplifier were activated only after user input, while avoiding continuous operation by triggering activation only when proximity is detected.
2Use of energy by moving object
If the amplifier is kept inactive to save power, then the power consumption is reduced, but the delay in media playback increases
Solution Approach 1:
The system implements feedback mechanisms by continuously monitoring sensor inputs (motion detection, proximity detection) and dynamically adjusting the amplifier's power state based on detected user presence. When sensors detect user proximity or movement patterns indicating imminent interaction, the system provides feedback to activate the amplifier, ensuring minimal playback delay only when needed.
3Extent of automation
If proximity sensors are added to detect user movement, then the intelligence of amplifier activation is improved, but the device complexity increases
Solution Approach 1:
The system achieves multi-functionality by utilizing sensors that serve multiple purposes: motion detection for amplifier activation, user presence detection for playback control, and interaction gesture recognition. This universal approach allows the same sensor infrastructure to support intelligent amplifier activation without requiring dedicated specialized components, thereby limiting the increase in device complexity.
Data Source
AI summary
Embodiments are provided for intelligently activating an amplifier in a playback device based on proximity detection. The playback device may be in a quasi-idle state when the playback device is not rendering media content. The quasi-idle state of the playback device may involve an amplifier in the playback device being inactive, while some other components or modules of the playback devices remain active. The playback device may include a proximity sensor configured to detect movement relative to the playback device. If movement is detected indicating that a user input to cause the playback device to render media content is anticipated, the amplifier may be pre-emptively activated such that the playback device enters an active state from the quasi-idle state. In some cases, the playback device may send a message to one or more other playback devices to cause the other playback devices to enter an active state.