Source Driver Signal Detection for Display Timing Controller
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In liquid crystal display devices, signal transmission between the timing controller and source driver often experiences errors due to external interference or poor equipment quality, leading to distorted images and inefficient data transmission as the source driver performs multiple tentative adjustments to adapt parameters, resulting in redundant information transmission.
Innovation Solution
A method and component for signal detection where a test code stream is transmitted, decoded, and compared to an initial code stream, with configuration information adjusted based on mismatches to ensure accurate signal transmission, reducing the need for multiple adjustments and improving efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the source driver performs multiple tentative adjustments to adapt parameters, then the signal transmission quality is improved, but the transmission efficiency deteriorates due to redundant information transmission
Solution Approach 1:
The patent applies preliminary action by performing parameter adaptation using test code streams before actual data signal transmission. The source driver adjusts configuration information (such as equalization parameters and signal levels) based on test patterns, ensuring optimal signal quality is achieved beforehand. This preliminary adjustment phase prevents the need for multiple tentative adjustments during actual data transmission, thereby improving transmission efficiency while maintaining signal quality.
2Reliability
If the source driver performs multiple tentative adjustments to adapt parameters, then the signal transmission quality is improved, but the transmission time increases due to multiple transmissions of test code stream
Solution Approach 1:
The patent implements preliminary action by completing all necessary parameter adaptations during a dedicated test phase before actual data transmission begins. Configuration information is adjusted based on test code stream results, and once optimal parameters are found, they are locked in for subsequent data transmission. This approach ensures signal transmission quality is established beforehand, eliminating the need for time-consuming repeated adjustments during actual operation.
Solution Approach 2:
The patent uses test code streams as copies or simulations of actual data signals to perform parameter adaptation. Instead of adjusting parameters during real data transmission, the system creates a test environment with representative test patterns, adapts parameters in this copied scenario, and then applies the learned configuration to actual data transmission. This copying approach allows thorough parameter optimization without the time penalty of repeated adjustments on real data.
3Adaptability or versatility
If configuration information is not properly matched, then the system can adapt to different conditions, but the number of adjustments increases leading to reduced efficiency
Solution Approach 1:
The patent implements feedback mechanisms where the source driver monitors signal quality metrics during test code stream transmission and uses this feedback to adjust configuration information. The system compares received test patterns with expected patterns, detects errors or quality degradation, and automatically adjusts parameters such as equalization settings and signal levels accordingly. This closed-loop feedback ensures proper matching of configuration information while minimizing the number of adjustment iterations needed.
Solution Approach 2:
The patent systematically changes key transmission parameters during the adaptation phase, including signal levels, equalization coefficients, and timing adjustments. By methodically varying these parameters during test mode and measuring the impact on signal quality, the system identifies the optimal parameter set for the specific transmission conditions. Once optimal parameters are found, they are fixed for data transmission, balancing adaptability with efficiency.
Data Source
Figure 1~2a
Figure 2b
Figure 3
AI summary
The present disclosure relates to a signal detection method and component, as well as a display device. The display device includes a timing controller and a source driver. The source driver receives a test code stream from the timing controller, which is obtained through encoding of an initial code stream by the timing controller, the initial code stream representing a test signal. The source driver decodes the test code stream to obtain a decoded code stream. Whether the decoded code stream is the same as the initial code stream is detected, and when the decoded code stream is different from the initial code stream, configuration information of the source driver is acquired. The configuration information is transmitted to the timing controller, so that when it does not match with pre-set reference information of the timing controller, the configuration information is adjusted according to the reference information. The source driver receives adjusted configuration information transmitted by the timing controller, and then receives a subsequently transmitted signal according to the adjusted configuration information. The present disclosure solves a problem of low signal transmission efficiency, and therefore improves the signal transmission efficiency.