Display Light Source Control for Unauthorized Component Replacement
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Solution Overview
Problem
Existing display devices can be used illegally by replacing components without licenses, despite technologies like Patent Document 1 that prevent unauthorized use when genuine components are replaced.
Innovation Solution
A display device with a first storage for post-processing parameter information, a second storage for processing information, a processor to convert post-processing to pre-processing parameter information, and a light source controller to emit light based on the processed information, ensuring only authorized use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a component with license information is replaced with a component without license information, then the projector can be used without time restrictions, but the license control mechanism fails and unauthorized use becomes possible
Solution Approach 1:
The license verification mechanism is segmented into multiple independent components: license information storage in the light source device, processing information storage in the control board, and a verification process that checks both components. This segmentation ensures that replacing a single component (control board or light source device) without the corresponding license information will fail the verification check, preventing unauthorized use while maintaining system usability.
2Ease of repair
If the control board is replaced with a genuine standard component, then the projector can be used, but if the light source device is replaced without license information, then unauthorized use becomes possible
Solution Approach 1:
The system performs preliminary verification of license information before allowing the projector to operate. When the control board is replaced with a genuine component, it contains the necessary processing information to verify the light source device's license. This preliminary check ensures that even if components are replaced for repair purposes, the license control mechanism remains intact and prevents unauthorized use.
Solution Approach 2:
The system implements a feedback mechanism where the control board continuously verifies the license information stored in the light source device against the processing information in the control board itself. This feedback loop ensures that any attempt to replace components without proper license information will be detected and prevent operation, while allowing genuine repairs with authorized components.
3Ease of operation
If license information is stored only in the control board, then component replacement is easier, but the light source device can be replaced with unauthorized components
Solution Approach 1:
License information is segmented and distributed across two components: the light source device stores the actual license information, while the control board stores processing information for verification. This segmentation ensures that both components are required for the system to function, preventing unauthorized light source device replacement while maintaining ease of operation with authorized components.
Solution Approach 2:
The control board acts as an intermediary that mediates between the light source device's license information and the projector's operation. It contains processing information that verifies the authenticity of the light source device's license, creating a trusted connection that prevents unauthorized components from being used while allowing legitimate component replacement.
Data Source
AI summary
A display device includes a first storage configured to store post-processing parameter information obtained by processing parameter information indicating parameters for causing a light source device to appropriately emit light, a second storage configured to store processing information specific to the light source device, a processor configured to process the post-processing parameter information stored in the first storage into pre-processing parameter information based on the processing information stored in the second storage, and a light source controller configured to cause the light source device to emit light based on the pre-processing parameter information processed by the processor.