Display Apparatus Frame Rate Doubling via Memory Copying
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Solution Overview
Problem
The high cost of producing LCDs capable of displaying 3D stereoscopic images at 240 Hz due to the need for expensive frame rate controllers, which are typically used to refresh images at this frequency, is a challenge in the field of display technology.
Innovation Solution
A method and apparatus that processes image data by storing and repeatedly reading frame data to output high-frequency image frames, correcting them based on previous frames, and displaying these frames on a display panel, effectively doubling the frame rate from 120 Hz to 240 Hz without the need for expensive frame rate controllers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If an LCD displays 3D stereoscopic images at 240 Hz using a frame rate controller, then the image refresh frequency is improved, but the production cost increases
Solution Approach 1:
The patent uses a memory device to store and repeatedly output image frame data, creating copies of the same frame at different time points. This copying approach allows the system to generate 240 Hz output from 120 Hz input without requiring expensive frame rate controller hardware, thus resolving the contradiction between high refresh frequency and production cost
Solution Approach 2:
The patent replaces the expensive frame rate controller with a simpler memory-based system that uses readily available memory devices. This substitution with cheaper components achieves the same functional result (240 Hz display capability) without the high production cost associated with specialized frame rate controllers
2Productivity
If a frame rate controller is used to refresh images at 240 Hz, then the productivity is improved, but the device complexity increases
Solution Approach 1:
The memory device stores image frame data and repeatedly outputs it to generate multiple frame copies at 240 Hz from 120 Hz input. This copying mechanism achieves high productivity without the complex control logic and additional hardware components that would be required in a traditional frame rate controller
Solution Approach 2:
The memory device performs multiple functions: it stores image data, generates frame copies, and provides timing control. This multi-functional approach replaces what would traditionally require separate dedicated components (frame buffer, copy controller, timing generator), thereby reducing device complexity while maintaining high productivity
Data Source
AI summary
A method of processing image data comprises storing image frame data in a first memory, repetitively reading the image frame data stored in the first memory to output high frequency image frame data and correcting the high frequency image frame data based on previous frame data.