Bluetooth Wake-Up Control for Display Power-Off Operation
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Solution Overview
Problem
Existing display devices require an infrared transceiver or prior network connection to be turned on by a terminal, limiting convenience and efficiency.
Innovation Solution
A display device capable of receiving packets from a terminal via Bluetooth technology even when powered off, allowing power-on and specific operations without network connection, with enhanced security through encoded packets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display device uses infrared transceiver or network connection to turn on power, then the power can be turned on remotely, but the device complexity increases and requires additional components
Solution Approach 1:
The patent extracts the wake-up functionality from the main display device by implementing a separate wake-up signal receiver that operates independently when the display is powered off. This receiver listens for wake-up packets on the Bluetooth channel without requiring the full display system to be active, thereby reducing the complexity of components needed in the main device while maintaining remote power-on capability.
Solution Approach 2:
The display device performs preliminary action by continuously monitoring the Bluetooth channel for wake-up packets even when powered off. The wake-up signal receiver is pre-configured with the terminal's address and monitoring parameters, allowing it to detect and respond to wake-up requests without requiring the main system to be active or requiring complex real-time connection management.
2Speed
If the display device continuously monitors for wake-up packets, then it can respond quickly to power-on requests, but power consumption increases
Solution Approach 1:
The wake-up signal receiver employs periodic action by monitoring the Bluetooth channel at specific intervals rather than continuously. It listens for wake-up packets during designated time windows and enters a low-power state between monitoring periods, thereby achieving fast wake-up response when needed while significantly reducing overall power consumption during the powered-off state.
3Ease of operation
If the display device allows wake-up without network connection, then convenience is improved, but security may be compromised
Solution Approach 1:
The patent implements feedback by having the wake-up signal receiver send a response packet to the terminal after detecting a valid wake-up request. This response confirms that the wake-up signal was received and processed, allowing the terminal to verify successful communication without requiring a full network connection, thereby maintaining security through confirmed authentication while enabling convenient wake-up operation.
Solution Approach 2:
The wake-up packet serves as an intermediary that carries authentication information between the terminal and the display device without requiring a full network connection. This intermediate communication mechanism allows the device to verify the terminal's identity and authorize wake-up while maintaining security, acting as a mediator that enables secure operation in a simplified communication environment.
Data Source
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AI summary
Provided is a display device. The display device includes a wireless communication unit configured to transmit/receive a packet according to a wireless communication manner, a storage unit configured to store information of at least one wake-up registration device, and a controller configured to allow the wireless communication unit to operate in a wake-up mode when power of the display device is turned off. The wireless communication unit outputs a first packet including information of the display device as operating in the wake-up mode, receives a second packet corresponding to a response of the outputted first packet, and turns on the power of the display device on the basis of the received second packet.