Display System Error Identification via Status Feedback
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Solution Overview
Problem
In systems where multiple display apparatuses are connected using the loop-out method, identifying which apparatus is causing an error when an image is not displayed is difficult due to various factors such as lack of HDCP support, as all apparatuses may fail to display the image, making it challenging to determine the faulty unit.
Innovation Solution
A display system with a processor that receives and stores status information from each display apparatus, sets points for signal transmission and reception, and checks operation status to identify abnormal conditions, such as changes in image frames or noise intensity exceeding thresholds, to determine which apparatus is malfunctioning and outputs this information for display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the loop-out method is used to connect display apparatuses, then the system can be configured with simple wiring and signal transmission, but it becomes difficult to identify which display apparatus has an error when image display fails
Solution Approach 1:
The patent implements a feedback mechanism where each display apparatus transmits its operation status information to a central controller. The controller collects status information from all apparatuses and feeds back identification results to indicate which apparatus is faulty. This allows error identification without changing the simple loop-out wiring structure.
Solution Approach 2:
The patent introduces a central controller as an intermediary between the display apparatuses and the error identification process. The controller receives status information from all apparatuses, processes this information to identify the faulty apparatus, and provides error identification results. This intermediary enables error detection without complicating the display apparatuses themselves.
2Reliability
If HDCP security is applied to the content signal, then content protection is improved, but when one apparatus lacks HDCP support, all apparatuses fail to display images making error source identification impossible
Solution Approach 1:
The patent implements preliminary action by having each display apparatus transmit its operation status information (including HDCP support capability) to the controller before actual content display. The controller uses this pre-collected information to identify which apparatus lacks HDCP support when display failure occurs, preserving error source information that would otherwise be lost.
Solution Approach 2:
The patent uses feedback mechanism where the controller collects status information from all display apparatuses and provides feedback in the form of error identification results. When HDCP-related display failure occurs, the feedback mechanism enables identification of the specific apparatus lacking HDCP support, preventing complete loss of error source information.
3Loss of information
If all display apparatuses are monitored simultaneously, then complete system status information is obtained, but the complexity of status information processing and error identification increases
Solution Approach 1:
The patent introduces a central controller as an intermediary that centralizes the processing of status information from all display apparatuses. Instead of requiring complex distributed processing across multiple apparatuses, the controller collects, processes, and analyzes status information in one location, reducing overall system complexity while maintaining complete information gathering.
Solution Approach 2:
The patent merges the status information processing function into a single central controller rather than distributing this complex processing across multiple display apparatuses. By combining the collection, analysis, and identification functions in one location, the system maintains complete status information while reducing processing complexity.
Data Source
AI summary
A display apparatus in a display system displays an image based on a received image signal, obtains and stores status information showing operation status of the plurality of display apparatuses, and identifies whether the plurality of display apparatuses normally operate based on the stored status information, and outputs result information about the identified normal/abnormal operation.