EDID Management via MCU Storage and Display Interlocking
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Solution Overview
Problem
Conventional architectures for managing extended display identification data (EDID) are limited to specific CPU brands and operating systems, leading to incorrect display content when displays are adjusted or disconnected in non-compatible systems.
Innovation Solution
A management apparatus with a microcontroller (MCU), input/output (IO) interface, and storage medium is used to obtain, store, and manage EDID, enabling interlocking of EDID with displays regardless of CPU brand, through a multiplexer system and notification signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the CPU is from a specific brand (e.g., Intel) and operates under a specific operating system (e.g., Windows), then the CPU can interlock EDID with the corresponding display, but the system becomes limited to specific CPU brands and operating systems
Solution Approach 1:
The patent introduces a management apparatus as an intermediary component between the CPU and displays. This management apparatus includes an EDID storage unit that stores EDID information and a notification unit that notifies the CPU about display connections. The management apparatus mediates the interaction between CPU and displays, enabling EDID interlocking functionality regardless of the CPU brand or operating system used.
2Adaptability or versatility
If the CPU is not from a specific brand, then the system has broader CPU compatibility, but the CPU cannot interlock EDID with the corresponding display, causing incorrect display content when displays are adjusted or disconnected
Solution Approach 1:
The management apparatus serves as a mediator that provides EDID storage and notification capabilities to CPUs that lack native EDID interlocking functionality. The notification unit sends notifications to the CPU about display connections and changes, enabling the CPU to correctly manage display content even without brand-specific capabilities.
Solution Approach 2:
The management apparatus copies and stores EDID information from displays in its EDID storage unit. This copied EDID data is then made available to the CPU through the notification mechanism, allowing the CPU to access and use EDID information without requiring brand-specific hardware capabilities.
3Ease of operation
If displays are adjusted or disconnected in a conventional architecture, then the system responds to display changes, but remaining displays may be affected and display content incorrectly when EDID interlocking is not maintained
Solution Approach 1:
The management apparatus implements a feedback mechanism where the notification unit continuously monitors display connection status and sends notifications to the CPU about any changes. When displays are adjusted or disconnected, the notification unit provides real-time feedback to the CPU, enabling the system to maintain correct display content integrity across all displays.
Data Source
AI summary
A method of managing EDID is implemented by a management apparatus that is connected to a chip module and a display. The management apparatus includes an MCU, an IO interface and a storage medium. The IO interface includes a connection port adapted to be connected to the display and associated with the storage medium. The display stores EDID related to itself. The method includes steps of: the MCU obtaining the EDID from the display; the MCU storing the EDID in the storage medium that is associated with the connection port which the display is connected to; and the MCU generating and sending a notification signal that is related to the storage medium to the chip module, so that the chip module obtains the EDID from the storage medium based on the notification signal, and controls the display that corresponds to the storage medium to display content based on the EDID.