Timing Controller Signal Interference Prevention
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Solution Overview
Problem
In display devices, the simultaneous transmission of data and check signals through a serial bus can cause interference, leading to check failures or communication failures between the timing controller and the system on board, reducing the reliability of the display device.
Innovation Solution
The timing controller disconnects communication with the system on board when not required and periodically outputs a check signal, and stops outputting the check signal after a preset delay when communication is needed, using a switch module to control the communication connection and avoid signal interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the timing controller transmits both data signal and check signal simultaneously through the serial bus, then communication efficiency is improved, but signal interference occurs leading to check failure or communication failure
Solution Approach 1:
The timing controller periodically outputs check signals at predetermined intervals instead of continuous transmission. The controller determines whether to output check signals based on whether data signal transmission is required, creating a periodic action pattern that avoids simultaneous transmission conflicts while maintaining communication efficiency
Solution Approach 2:
The timing controller dynamically adjusts its operation mode between check signal output and data signal transmission based on real-time communication requirements. The controller can switch between these modes flexibly, making the system adaptive and dynamic rather than static, thereby resolving the contradiction between continuous check signaling and data transmission
2Reliability
If the timing controller continuously outputs check signals to monitor PMIC status, then system reliability is improved, but communication failure with system on board occurs due to signal conflict
Solution Approach 1:
The check signal output is changed from continuous to periodic, where the timing controller determines whether to output check signals based on communication requirements. This periodic action reduces signal conflicts while maintaining monitoring capability, improving ease of operation without sacrificing reliability
Solution Approach 2:
The timing controller autonomously determines when to output check signals and when to transmit data signals based on its own judgment of communication requirements. This self-service mechanism eliminates the need for external coordination and prevents signal conflicts through intelligent self-regulation
Data Source
AI summary
The present disclosure discloses a display device and a control method thereof. The display device includes a system on board and a timing controller. The timing controller is configured to: disconnect a communication connection with the system on board when communication with the system on board is not required, and periodically output a check signal; and stop outputting the check signal when communication with the system on board is required, and establish a communication connection with the system on board after a delay of a preset duration.