Image Processing Apparatus Timing Adjustment for Crosstalk Reduction
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Solution Overview
Problem
Existing image processing methods fail to effectively reduce image crosstalk in displays, particularly in liquid crystal displays and 3D displays, due to the characteristics of liquid crystals which cause a mixture of pixel data to be perceived by the user, leading to suboptimal image quality.
Innovation Solution
An image processing method and apparatus that adjusts timing signals to shorten horizontal blanking time periods and lengthen vertical blanking time periods, ensuring that the pixel number correspondence is maintained, thereby alleviating crosstalk by ensuring the backlight module turns on during the latter data transmission, and providing approaches to determine the number of vertical blanking pixel rows based on remainder pixels for design flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the horizontal blanking time period is long, then the image transmission is stable, but the crosstalk between pixel data increases
Solution Approach 1:
The patent changes the timing parameters by shortening the horizontal blanking time period and lengthening the vertical blanking time period. This parameter adjustment allows the backlight module to remain on during more of the data transmission period, reducing the mixture of pixel data from different frames and eliminating crosstalk while maintaining transmission stability.
Solution Approach 2:
The patent dynamically adjusts the blanking time periods based on the requirements of the display system. By making the horizontal blanking period variable and shorter, and the vertical blanking period variable and longer, the system optimizes the balance between transmission stability and crosstalk reduction.
2Productivity
If the vertical blanking time period is short, then the image transmission efficiency is high, but the crosstalk between frames increases
Solution Approach 1:
The patent lengthens the vertical blanking time period to ensure that the backlight module remains on during the entire vertical blanking period. This allows complete transmission of vertical blanking pixel rows without mixing frame data, reducing crosstalk while maintaining acceptable transmission efficiency through optimized timing.
3Object-generated harmful factors
If the horizontal blanking time period is shortened, then the crosstalk is reduced, but the image transmission stability may be affected
Solution Approach 1:
The patent performs preliminary action by ensuring that all horizontal blanking pixel rows are completely transmitted and stored in the buffer before the backlight module turns off. This preliminary completion of blanking pixel transmission ensures that even with shortened horizontal blanking periods, the transmission stability is maintained while crosstalk is reduced.
Solution Approach 2:
The patent uses feedback mechanisms to monitor the transmission status and adjust timing accordingly. The controller ensures that the horizontal blanking pixel rows are completely transmitted before allowing the backlight to turn off, providing feedback-based control that maintains stability while reducing crosstalk.
Data Source
AI summary
An image processing method is disclosed according to one embodiment of the present invention. The method comprises receiving an image according to a first timing signal having at least one first active pixel time period, at least one first horizontal blanking time period and a first vertical blanking time period; and outputting the image according to a second timing signal having at least one second active pixel time period, at least one second horizontal blanking time period and a second vertical blanking time period. A pixel number corresponding to the first active pixel time period equals to a pixel number corresponding to the second active pixel time period. The second horizontal blanking time period is less than the first horizontal blanking time period. The second vertical blanking time period is larger than the first vertical blanking time period.