Interrupt Detector for Automatic Bluetooth Pairing in Sleep Mode
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Solution Overview
Problem
Users face inconvenience when trying to connect Bluetooth wireless communication between a multimedia device and an output device, such as an earphone or speaker, as the connection cannot be established if the output device is powered off, requiring manual switching of the device to a power-on state.
Innovation Solution
An apparatus with a short-range communication module, an interrupt detector, and a controller that senses an interrupt signal to wake up the controller and release the sleep mode, enabling automatic short-range communication connection between devices, even if one device is in a sleep mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the output device is kept in sleep mode to save power, then energy consumption is reduced, but the device cannot establish wireless communication connection when needed
Solution Approach 1:
The output device performs preliminary actions by maintaining a listening state for connection requests even in sleep mode. The device pre-configures itself to receive and respond to connection signals, so when a connection is needed, the pairing process can proceed without full power-on, enabling automatic reconnection while conserving energy.
Solution Approach 2:
The device dynamically adjusts its operational state between sleep mode and active communication mode. Based on received signals and connection requirements, the device transitions between low-power state and full operational state, optimizing the balance between energy consumption and connection capability.
2Use of energy by moving object
If the output device is powered off to conserve energy, then power consumption is reduced, but manual power switching is required for each connection
Solution Approach 1:
The system performs preliminary pairing and stores connection information in advance. When a connection is needed, the device uses the stored pairing information to automatically reestablish the connection without requiring manual power switching or user intervention, thus saving both energy and time.
Solution Approach 2:
The device enables self-service by automatically detecting connection requests and initiating the reconnection process using previously stored pairing information. The system serves itself by autonomously managing the power state transitions and connection establishment without requiring manual user input.
3Use of energy by moving object
If the device remains in sleep mode to maintain low power consumption, then energy is saved, but the device cannot sense or respond to connection signals
Solution Approach 1:
The device segments its operational modes into different states: a deep sleep mode for maximum power savings and an intermediate listening state for detecting connection signals. The communication function is divided into signal reception (low power) and full communication (high power), allowing the device to maintain reliability for connection detection while conserving energy.
Solution Approach 2:
The device uses an intermediary listening state that bridges the gap between deep sleep mode and full active mode. In this intermediate state, the device consumes minimal power while still being able to detect and respond to connection signals, serving as a mediator between power conservation and connection reliability.
Data Source
AI summary
A method for automatically connecting two devices with each other through short-range communication an apparatus for the same are disclosed. The apparatus comprises a short-range communication module configured to enable short-range communication with an external device; an interrupt detector configured to sense an interrupt signal for short-range communication connection, which is received from the external device through the short-range communication module in a sleep mode where a standby power is supplied; and a controller, the interrupt detector wakes up the controller if the interrupt signal is sensed in the sleep mode, and the woken-up controller releases the sleep mode and controls the short-range communication module to perform short-range communication connection with the external device.