Signal Processing Device with Delayed Frame Data Output
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing signal processing devices for image display apparatuses face challenges in accurately and rapidly performing signal processing without using memory in the timing controller, leading to difficulties in predicting image luminance and potentially damaging the panel, especially when reducing power consumption.
Innovation Solution
A signal processing device that includes an input interface, a first image processor to generate first image frame data, a second image processor to generate scaled-down second image frame data, and an output interface to transmit both types of data, where the first image frame data is delayed relative to the second image frame data, allowing the timing controller to perform accurate and rapid signal processing without relying on memory.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If memory is eliminated from the timing controller to achieve a slim display, then device complexity is reduced, but signal processing accuracy deteriorates because it becomes difficult to predict image luminance
Solution Approach 1:
The patent applies preliminary action by generating and transmitting second image frame data (scaled-down version) in advance before the first image frame data arrives at the timing controller. This allows the timing controller to perform luminance prediction and signal processing accurately without needing to store complete image data in memory, thus resolving the contradiction between reducing device complexity and maintaining measurement precision.
2Device complexity
If memory is eliminated from the timing controller, then the timing controller becomes slimmer, but the ability to perform rapid signal processing deteriorates
Solution Approach 1:
By preparing the second image frame data (scaled-down version) in advance and transmitting it before the first image frame data, the timing controller can immediately begin luminance prediction and signal processing operations without waiting for complete image data or requiring memory storage, thereby maintaining rapid signal processing capability while eliminating memory.
3Speed
If first image frame data is transmitted without delay, then transmission speed is maximized, but the timing controller cannot perform accurate signal processing without stored reference data
Solution Approach 1:
The patent transmits the second image frame data (scaled-down version) in advance before the first image frame data arrives at the timing controller. This preliminary transmission provides the timing controller with reference data needed for accurate luminance prediction and signal processing, while the first image frame data is transmitted immediately without delay, thus maintaining both transmission speed and processing reliability.
Data Source
AI summary
The present disclosure relates to a signal processing device and an image display apparatus including the same. A signal processing device according to an embodiment of the present disclosure includes: an input interface to receive an image signal; a first image processor to generate first image frame data based on the image signal; a second image processor to generate second image frame data scaled down from the first image frame data based on the image signal; and an output interface to receive the first image frame data from the first image processor and the second image frame data from the second image processor and to output the first image frame data and the second image frame data, wherein the first image frame data output from the output interface is more delayed than the second image frame data output from the output interface. Accordingly, a timing controller may accurately and rapidly perform signal processing for a panel.