Display Device Switching Transmission Direction for Reliability
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Solution Overview
Problem
Existing digital signage systems are prone to interruptions when a problem occurs with one of the image transmission devices, causing all connected display devices to fail in displaying video images, which inconveniences users.
Innovation Solution
A display device system that includes a communication unit, a display, and a controller to receive video images and control commands from one image transmission device, transmit status information, and switch the transmission direction of video images and control commands when the primary image transmission device or communication unit malfunctions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an image transmission device is connected to a first display device among a plurality of display devices, then the system structure is simple, but if there occurs a problem of connection with the first display device, all display devices are unable to display video images
Solution Approach 1:
The patent divides the connection structure into multiple independent connection paths. Each display device can be connected to different image transmission devices, creating segmented connection routes. When one connection fails, other segments remain functional, preventing total system failure.
Solution Approach 2:
The patent implements multi-functionality by enabling display devices to receive video images from multiple different image transmission devices. The display devices are designed to universally accept inputs from various sources, not just a single designated transmitter, allowing flexible switching when one source fails.
2Duration of action of stationary object
If the display device switches transmission direction to another image transmission device when malfunction occurs, then continuous display is maintained, but the control system becomes more complex
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple connection paths and standby image transmission devices before any malfunction occurs. The system is prepared in advance with alternative routes, so when a failure happens, switching can occur immediately without complex real-time decision-making or reconfiguration.
Solution Approach 2:
The patent implements feedback mechanisms where the display device or control system monitors the operational status of connected image transmission devices. When a malfunction is detected through feedback signals, the system automatically triggers a switch to an alternative transmission device, maintaining continuous operation.
Data Source
AI summary
The present invention relates to a display device and a control method therefor, and the purpose thereof is to: receive at least one of a video image and a control command from a first image transmission device from among a plurality of image transmission devices; transmit status information regarding a display device to the first image transmission device; and, when at least one of the first image transmission device and a communication unit does not operate normally, change the transmission direction of the video image and the control command.