Display Device BLE Sleep Mode Power Management
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Solution Overview
Problem
Existing display devices face challenges in minimizing power consumption while providing ambient services, leading to increased panel wear and inefficient energy use when not in use.
Innovation Solution
A control method for a display device that utilizes Bluetooth Low Energy (BLE) communication to manage power states based on received BLE identification information from connected mobile devices, allowing the device to wake up only when necessary and maintain a sleep mode when not in use, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display device continuously provides ambient service, then user convenience is improved, but power consumption increases
Solution Approach 1:
The display device dynamically adjusts its operational state between sleep mode and ambient service mode based on BLE connection status. The system transitions from a static continuous operation to a dynamic state-changing mechanism that activates the display only when needed, resolving the contradiction between user convenience and power consumption.
Solution Approach 2:
The system implements feedback through BLE identification information that continuously monitors mobile device presence. This feedback mechanism allows the display device to intelligently determine when to activate ambient service and when to enter sleep mode, optimizing the balance between user convenience and energy efficiency.
2Use of energy by moving object
If the display device enters sleep mode to save power, then power consumption is reduced, but response time to user needs increases
Solution Approach 1:
The display device performs preliminary actions by maintaining BLE communication in a low-power state even during sleep mode. This allows the system to detect mobile device approach in advance and wake up the display proactively, reducing response time while maintaining power savings.
Solution Approach 2:
The system employs periodic action through continuous BLE scanning at low power intervals. This periodic monitoring enables the display to stay responsive to user needs without maintaining full operational power, effectively balancing power consumption and response time.
3Ease of operation
If the display device continuously monitors for mobile devices, then user convenience is improved, but power consumption increases
Solution Approach 1:
The monitoring function is segmented between two operational states: full monitoring during ambient service mode and lightweight BLE scanning during sleep mode. This segmentation allows the system to maintain user convenience through continuous presence detection while significantly reducing overall power consumption during sleep periods.
Data Source
AI summary
A display device includes a display; a memory storing at least one instruction; a communicator configured to communicate with a mobile device via a BLE communication network; and a controller including a processor configured to execute the at least one instruction stored in the memory. The processor is further configured to execute the at least one instruction to manage BLE identification information when the BLE identification information for identifying the mobile device connected via the BLE communication network is received from the mobile device during a normal mode in which an ambient service is being executed, and the communicator is further configured to, based on the BLE identification information received from the mobile device after a sleep mode is started, determine whether to wake up the controller based on whether information corresponding to the BLE identification information is stored in the communicator.