Wireless Earphone Auto-Wakeup via Pin Voltage Detection
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Solution Overview
Problem
Current wireless earphones require users to manually turn them on by pressing a power button each time they are removed from the charging box, causing inconvenience and potentially increasing manufacturing costs due to the need for a power button.
Innovation Solution
Incorporating a microprocessor with a wakeup circuit and an uninterruptible power area within the wireless earphone, which detects a voltage change when connected or disconnected from the charging box, automatically switching the device from sleep mode to active mode, eliminating the need for a manual power button.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a manual power button is provided for turning on the wireless earphone, then the device can be controlled to power on, but the user experience deteriorates due to the need to press the power button every time the earphone is removed from the charging box
Solution Approach 1:
The wireless earphone automatically detects when it is removed from the charging box through the wakeup circuit monitoring the first pin voltage level, and automatically powers on without requiring user intervention. The system serves itself by autonomously transitioning from sleep mode to active mode based on the detection of voltage level changes at the first pin, eliminating the need for a manual power button operation.
2Ease of manufacture
If a manual power button is provided for turning on the wireless earphone, then the device can be controlled to power on, but the manufacturing cost increases due to the additional component
Solution Approach 1:
The patent removes the power button component from the wireless earphone design. By extracting this unnecessary component and replacing it with an automated wakeup mechanism that uses existing circuitry (the first pin voltage detection), the device complexity is reduced while maintaining or improving functionality. This extraction principle eliminates the need for an additional physical button and its associated control logic.
3Use of energy by moving object
If the wireless earphone enters sleep mode when connected to the charging box, then power consumption is reduced, but the device requires additional automation mechanisms to wake up
Solution Approach 1:
The wakeup circuit is pre-configured to monitor the voltage level at the first pin and is ready to trigger a wakeup signal immediately when a voltage change is detected. This preliminary preparation of the wakeup mechanism allows the system to transition quickly from sleep mode to active mode without requiring complex real-time decision-making, thereby balancing low power consumption with efficient automation.
Data Source
AI summary
The present invention provides a wireless earphone, wherein the wireless earphone includes a first pin, a microprocessor and a power management unit, the first pin is arranged to connect to an external charging device, the microprocessor includes a core circuit and a wakeup circuit coupled to the first pin, and the power management unit includes an uninterruptible power area for providing a power to the wakeup circuit. In the operations of the wireless earphone, when the core circuit is at a sleep mode, if the wakeup circuit detects that a voltage level of the first pin changes, the wakeup circuit generates a wakeup signal to wake up the core circuit.