Display Device BLE Power Management via Dynamic Mode Switching
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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 the presence of a connected mobile device, switching between normal and sleep modes to conserve energy and adjust services according to the device's operating system.
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 normal mode (providing ambient service) and sleep mode (conserving energy) based on real-time detection of mobile device presence via BLE communication. This dynamic state transition resolves the contradiction by allowing the system to adapt its energy consumption level to actual usage needs.
Solution Approach 2:
The system uses BLE identification information received from the mobile device as feedback to determine whether to maintain ambient service or enter sleep mode. The processor continuously monitors for BLE signals and uses this feedback to switch between operational states, ensuring the display provides service only when needed while minimizing power consumption during absence.
2Use of energy by moving object
If the display device enters sleep mode to save energy, then power consumption is reduced, but response time to user presence increases
Solution Approach 1:
The display device performs preliminary actions by storing BLE identification information of registered mobile devices in advance and maintaining BLE communication capability in sleep mode. When a mobile device approaches, the system can quickly recognize it through pre-stored identification data, enabling rapid transition from sleep to normal mode without significant delay.
3Reliability
If the display device manages BLE identification information in both normal and sleep modes, then service reliability is improved, but device complexity increases
Solution Approach 1:
The system segments the management of BLE identification information by using separate memory spaces (first memory for normal mode operations, second memory for sleep mode operations) and dividing control responsibilities between the processor and communicator. This segmentation reduces the complexity burden on any single component while maintaining reliable service through coordinated operation.
Data Source
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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.