Display Signal Control With Pseudo-Bit Noise Reduction
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Solution Overview
Problem
Existing display devices face challenges in improving the noise characteristics of transmission signals between the timing controller and data driver, which affect the overall performance and efficiency of the display.
Innovation Solution
The implementation of a pseudo shift register and pseudo latch in the data driver to manage pseudo bits of image and command data, adjusting the distribution of pseudo bits at the start or end of transmission units, and utilizing a saturation signal to control the output, thereby optimizing the transmission signal noise characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If image data and command data are transmitted from the timing controller to the data driver, then the display device can operate normally, but periodic noise is generated in the transmission signal
Solution Approach 1:
The patent extracts and removes pseudo bits from the transmitted data stream. The timing controller identifies and eliminates specific bit patterns (pseudo bits) that cause periodic noise, transmitting only the necessary data bits to the data driver. This extraction of harmful elements directly reduces periodic noise while maintaining display operation.
Solution Approach 2:
The patent changes the parameter of data transmission by dynamically adjusting the number and position of pseudo bits based on the transmission unit length. By varying the data structure parameters (adding or removing pseudo bits at different positions), the system optimizes signal quality and reduces periodic noise characteristics.
2Object-affected harmful factors
If pseudo bits are added to image data and command data, then noise characteristics can be controlled, but device complexity increases
Solution Approach 1:
The patent segments the data transmission process into distinct functional units: the timing controller handles pseudo bit management, the data driver handles data reception and processing. By dividing the system into specialized segments, each component has a clear, simplified function, reducing overall system complexity despite the added noise control capability.
Solution Approach 2:
The timing controller performs preliminary processing of image data and command data by pre-calculating and pre-positioning pseudo bits before transmission. This preliminary action ensures that noise characteristics are controlled at the source, simplifying the data driver's task and reducing the need for complex post-processing.
3Object-affected harmful factors
If the timing controller outputs image data with pseudo bits removed, then transmission signal noise is reduced, but processing time increases
Solution Approach 1:
The patent implements periodic removal of pseudo bits at regular intervals based on transmission unit length. By establishing a periodic pattern for pseudo bit removal, the timing controller can efficiently process data without examining every single bit, significantly reducing processing time while maintaining noise reduction effectiveness.
Solution Approach 2:
The timing controller creates a simplified copy of the original data stream with pseudo bits already removed or marked for removal. This copied data structure is then transmitted to the data driver, avoiding the need for complex real-time analysis during transmission and reducing overall processing time.
Data Source
AI summary
The present disclosure relates to a display device, and more specifically, to a display device in which the noise characteristics of a transmission signal are improved by controlling image data output from a timing controller to a data driver. According to the present disclosure, it is possible to improve the noise characteristics of the transmission signal by controlling the image data output from the timing controller to the data driver.