VBO Signal Transmission Stability in Display Terminals
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Solution Overview
Problem
During the transmission of VBO signals in display communications, the timing control signal is often unstable, leading to abnormal screen displays due to the probabilistic instability of the timing control signal embedded in the VBO signal, which the Tcon board cannot correctly resolve from valid image data, resulting in unreliable display performance.
Innovation Solution
A method and apparatus that control the transmission of VBO signals by performing multiple interactions between the Tcon board and the mainboard, where the Tcon board acquires a timing control signal by parsing valid image data after each interaction, and if the signal satisfies a preset condition, it stops repeating the interaction, ensuring only stable display image data is transmitted, thereby stabilizing the timing control signal and ensuring normal screen display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the Tcon board directly transmits VBO signal after single handshake, then the transmission speed is high, but the timing control signal is unstable causing abnormal screen display
Solution Approach 1:
The patent applies preliminary action by performing multiple handshakes and timing control signal acquisitions before actual display transmission begins. The Tcon board repeatedly checks the timing control signal stability through multiple interaction cycles, ensuring the signal is stable before initiating normal display operations. This preliminary verification process resolves the contradiction by preparing the timing control signal in advance to ensure stability without affecting subsequent transmission speed.
Solution Approach 2:
The patent implements feedback by having the Tcon board continuously monitor and check the timing control signal during multiple handshake interactions. Each interaction cycle provides feedback about the timing control signal's stability, allowing the system to adjust and re-transmit if necessary. This feedback mechanism ensures reliable timing control while maintaining high transmission speed by eliminating unstable signals before they cause display abnormalities.
2Reliability
If multiple interactions are performed to stabilize timing control signal, then the timing control signal becomes stable, but the interaction time increases
Solution Approach 1:
The feedback mechanism allows the system to terminate the multiple interaction process early once the timing control signal stabilizes. Rather than performing a fixed number of handshakes, the system continuously monitors signal stability and stops repeating interactions when the preset condition is satisfied. This dynamic feedback approach reduces time loss by avoiding unnecessary repeated interactions while ensuring reliability through sufficient verification.
Solution Approach 2:
The patent applies partial action by performing only as many interactions as necessary to stabilize the timing control signal, rather than executing a fixed maximum number of handshakes. The system stops repeating interactions once the timing control signal satisfies the preset condition for a preset number of times, avoiding excessive action while ensuring adequate stabilization. This approach optimizes the balance between reliability and time efficiency.
Data Source
AI summary
The present application discloses a method and an apparatus for controlling transmission of a VBO signal and a display terminal. The method is applied in the display terminal, where the display terminal includes a mainboard and a Tcon board which use a VBO interface for communications, and the method includes: after a system is powered on, performing multiple interactions between the Tcon board and the mainboard according to a VBO signal transmission protocol; after each of the interactions, acquiring, by the Tcon board, a timing control signal by parsing valid image data of a received VBO signal transmitted by the mainboard, and if the timing control signal acquired by parsing successively satisfies a preset condition in a preset number of handshakes, then stopping repeating the interaction, and only performing transmission of display image data in the VBO signal.