Display Device Image Rewind Buffer Mechanism
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Solution Overview
Problem
Conventional display devices lack a 'rewind' function, making it inconvenient for users to revisit previous images or operations, as they cannot easily return to a previous step or view previously displayed images.
Innovation Solution
A display device with an image buffer and display controller that enters an image-rewinding mode upon a trigger signal, allowing users to retrieve and play back images from a specific time point using function buttons, with the image buffer employing a first-in-first-out mechanism to store compressed images for a predetermined period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional display devices are used without an image buffer and rewind function, then the device complexity is low, but the ease of operation deteriorates because users cannot revisit previous images or operations
Solution Approach 1:
The image buffer stores image signals in advance before they are displayed, allowing the display controller to retrieve and replay previous images when users press the rewind button. This preliminary storage action enables the rewind function without requiring complex real-time processing
Solution Approach 2:
The image buffer acts as an intermediary component between the image signal source and the display module. It temporarily holds image data, allowing the display controller to access and replay historical images independently of the real-time image signal flow
2Ease of operation
If the image buffer stores images for a long period, then the ease of operation improves as users can access older images, but the volume of stored data increases
Solution Approach 1:
The system allows users to adjust the rewind time parameter to control how long images are stored in the buffer. By changing this time parameter, users can balance between accessibility of historical images and the volume of data stored in the buffer
3Manufacturing precision
If the display controller processes and stores uncompressed image signals, then the image quality is maintained, but the volume of data to be stored and processed increases
Solution Approach 1:
The display controller compresses image signals before storing them in the buffer, reducing the data volume. When replaying images, the controller decompresses the stored signals to restore image quality, thus maintaining manufacturing precision while reducing storage requirements
Data Source
AI summary
A display device is provided, which includes an image buffer, a display module, and a display controller. The display controller is used for receiving an image signal from a host, and storing the image signal in the image buffer. In response to the display controller receiving a trigger signal, the display controller controls the display device to enter an image-rewinding mode. The display controller obtains a retrospective image that corresponds to a retrospective time point according to a user command, and plays the retrospective image on the display module.