Display Device Power-Off Suspend Mode for Continuous Image Transmission
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Solution Overview
Problem
When a display device connected to an external device is powered off while transmitting image data to another display device, the viewing of the image on the second display device is unintentionally terminated.
Innovation Solution
The display device includes a processor that controls the communication unit to transmit image data to another display device, identifies ongoing transmission operations, and enters a power-off suspend mode to maintain data transmission without powering off, switching to a power-saving mode upon terminating the transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the display device is powered off when receiving a power-off signal, then power consumption is reduced, but the image data transmission to the second display device is unintentionally terminated
Solution Approach 1:
The display device dynamically adjusts its power state based on operational context. When image data transmission is active, the device enters a power-off suspend mode rather than fully powering off, allowing the transmission function to remain active while reducing overall power consumption. This dynamic state transition resolves the contradiction by making the power consumption adaptive to the current operational requirements.
Solution Approach 2:
The invention maintains the image data transmission function continuous even when the display device receives a power-off signal. By entering a power-off suspend mode instead of fully shutting down, the device ensures that the useful action of transmitting image data to the second display device continues uninterrupted, while still achieving some power savings compared to full operation.
2Reliability
If the display device enters power-off suspend mode to maintain transmission, then image data transmission continuity is preserved, but power consumption is reduced less than full power-off
Solution Approach 1:
The device implements dynamic power management by transitioning to a power-off suspend mode that is context-dependent. This mode is activated specifically when image data transmission is ongoing, creating a dynamic balance between maintaining transmission continuity and managing power consumption. The system adapts its power state rather than using a static on/off approach.
Solution Approach 2:
The invention changes the operational parameters of the display device by introducing an intermediate power state (power-off suspend mode) between full operation and complete shutdown. This parameter change allows the transmission function to remain active while reducing power consumption to an intermediate level, optimizing both reliability and energy efficiency simultaneously.
3Loss of energy
If the display device fully powers off, then power consumption is minimized, but the viewing of image on the second display device is unintentionally terminated
Solution Approach 1:
The device takes preliminary action by checking whether image data transmission is being performed before responding to a power-off signal. This preliminary check allows the system to make an informed decision about the appropriate power state, preventing the unintended termination of image viewing on the second display device while still achieving power savings when transmission is not active.
Solution Approach 2:
The invention implements a feedback mechanism where the display device monitors its current operational state (whether image data transmission is active) and uses this feedback to determine the appropriate power management action. This feedback loop ensures that power-off decisions are made based on actual operational requirements, preventing unintended termination of image viewing while optimizing power consumption.
Data Source
AI summary
Provided is a display device including: a display, a communication unit comprising communication circuitry, a memory storing one or more instructions, and at least one processor, comprising processing circuitry, configured to execute the one or more instructions to: control the communication unit to transmit image data received from an external device connected to the display device, to another display device connected to the display device, based on receiving a power-off signal, identify whether transmitting the image data to the other display device is being performed, based on transmitting the image data to the other display device being performed, turn off the display and enter a power-off suspend mode in which transmitting the image data to the other display device is maintained, and based on transmitting the image data to the other display device being terminated in the power-off suspend mode, switch to a power saving mode.