Display Device Keep-Alive Protocol for IoT Power Reduction
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Solution Overview
Problem
In IoT environments, display devices face significant power consumption issues due to the need to maintain continuous communication for keep-alive operations, which can lead to increased energy usage and reduced device lifespan.
Innovation Solution
A display device and operating method that utilize a processor to perform keep-alive operations using different communication protocols, allowing the device to enter a suspend mode while still maintaining connectivity by transmitting keep-alive packets at intervals, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display device continuously maintains communication for keep-alive operations, then the IoT environment remains active and reliable, but power consumption increases
Solution Approach 1:
The patent implements periodic keep-alive operations where the display device transmits keep-alive packets at predetermined intervals (e.g., every 30 seconds) rather than continuously maintaining communication. This periodic approach allows the device to enter suspend modes between transmissions, significantly reducing power consumption while still maintaining IoT environment availability and reliability.
2Use of energy by moving object
If the display device enters suspend mode to reduce power consumption, then energy expenditure decreases, but communication capability may be interrupted
Solution Approach 1:
Before entering suspend mode, the display device performs preliminary keep-alive transmissions to ensure communication capability is maintained. The device transmits keep-alive packets at predetermined intervals before suspending operations, which preliminarily establishes communication continuity and allows safe entry into low-power modes without interrupting IoT functionality.
3Speed
If the processor remains active to handle keep-alive operations, then communication responsiveness is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic processor state management where the processor alternates between active and suspend states based on keep-alive operation requirements. The processor remains active only during packet transmission and reception, then transitions to suspend mode, dynamically adjusting its operational state to maintain communication responsiveness while minimizing power consumption during idle periods.
Data Source
AI summary
A display device and a method of operating the same are provided. The display device includes: a display; a communicator configured to perform communication with a server via a wireless network; and a processor configured to execute at least one instruction to: receive a first packet from the server by communicating with the server to perform a first keep-alive operation according to a first communication protocol, generate and transmit, to the communicator, a second packet for performing a second keep-alive operation according to a second communication protocol with the server, based on data included in the received first packet, and control the display device to enter a suspend mode after transmitting the second packet, wherein the communicator is further configured to, while the display device is in the suspend mode, perform the second keep-alive operation by transmitting the second packet to the server at intervals of a first period.