Display Controller Flash Memory Update Mechanism
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Solution Overview
Problem
Display apparatuses cannot function normally if their driving information stored in flash memory is damaged, requiring the entire flash memory to be replaced for updates, leading to user inconvenience and increased costs.
Innovation Solution
A display apparatus with a controller that updates driving data from a flash memory to new data received from an external apparatus upon user instruction, using a data interface and user input, while preventing further updates to the new data to protect the information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the flash memory is designed to prohibit updates of driving information during manufacturing, then the reliability of the stored driving information is improved, but the ease of operation deteriorates when updates are needed
Solution Approach 1:
The patent applies dynamics by changing the update prohibition from a static permanent state to a dynamic controllable state. The controller can switch between protecting the driving information and allowing updates based on user instructions. This resolves the contradiction by making the protection mechanism flexible rather than fixed, enabling both reliability during normal operation and ease of operation when updates are needed.
Solution Approach 2:
The patent introduces an intermediary mechanism through the controller that mediates between the flash memory and external update sources. The controller receives user instructions and controls the update process, acting as a mediator that enables updates only when authorized while maintaining protection otherwise. This resolves the contradiction by adding a control layer that balances protection and updateability.
2Reliability
If the flash memory is designed to prohibit updates of driving information, then the reliability of the stored driving information is improved, but the device complexity increases when replacement is required
Solution Approach 1:
The patent applies copying by creating a software-based update mechanism that copies driving information from external sources to the flash memory through the controller. Instead of requiring physical replacement of the entire flash memory, the system can copy new driving information into the existing flash memory structure. This resolves the contradiction by replacing complex physical replacement procedures with simpler information copying operations.
3Reliability
If the flash memory is designed to prohibit updates of driving information, then the reliability of the stored driving information is improved, but the loss of time increases when updates are needed
Solution Approach 1:
The patent applies preliminary action by preparing the controller to receive and process update instructions in advance. When a user requests an update, the controller can immediately initiate the update process by receiving instructions from external apparatuses, rather than requiring time-consuming replacement procedures. This resolves the contradiction by enabling rapid updates through pre-configured software control mechanisms.
Data Source
AI summary
A display apparatus includes: a display part; a storing part which stores first driving data for driving the display part; a data interface which receives second driving data from an external apparatus; and a controller which updates the first driving data with the second driving data after receiving an instruction to update the first driving data.