External Display Content Sharing With Remote Power-State Control
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Solution Overview
Problem
Existing display devices face challenges in conveniently sharing content between multiple devices located in different spaces, particularly when power states of target devices need to be managed for seamless content sharing.
Innovation Solution
A display device equipped with a communication part, user input part, and control part that enables content sharing by selecting an external display device, determining its power state, and remotely powering it on or off as needed for content transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If content sharing is implemented between multiple display devices, then content continuity across different spaces is improved, but device complexity and power management overhead increase
Solution Approach 1:
The system performs preliminary actions by pre-establishing device pairings and storing power state information before content sharing is needed. When a user initiates content sharing, the system checks pre-stored power states and automatically powers on target devices if needed, avoiding complex real-time power management decisions.
Solution Approach 2:
The target display device autonomously manages its own power state transitions. When receiving a content sharing request, the device self-determines whether it is powered on or off and automatically activates itself if necessary, eliminating the need for complex centralized power management control.
2Ease of operation
If remote power-on commands are transmitted to external display devices, then ease of operation is improved, but energy consumption and communication overhead increase
Solution Approach 1:
The system transmits only essential power state information and selective content data rather than complete device states. Power-on commands are transmitted selectively only to devices that are currently off and require content sharing, minimizing unnecessary communication energy consumption.
3Reliability
If power state determination is performed before content sharing, then reliability of content transfer is improved, but time delay and processing overhead increase
Solution Approach 1:
The system performs power state determination as a preliminary check before initiating content transfer. By quickly assessing whether the target device is powered on or off beforehand, the system ensures reliable content transfer while minimizing time loss through efficient, targeted power state queries rather than continuous monitoring.
Data Source
AI summary
A display device according to the present disclosure comprises: a display unit; a communication unit for transmitting/receiving data to/from at least one external display device; a user input unit for receiving a screen call command from a remote control device; and a control unit for providing, in response to the screen call command, a screen selection interface, which selects an external display device having a screen to be called, receiving an input of selection of the external display device having a screen to be called, determining whether the selected external display device is turned on/off, transmitting a remote power on-command and a screen sharing command to the selected external display device through the communication unit if the selected external display device is turned off, receiving content from the selected external display device through the communication unit, and playing back the received content through the display unit.