Timing Controller Dynamic Signal Swing for RF Noise Immunity
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Solution Overview
Problem
RF noise from mobile phones interferes with data signal transmission between a timing controller and a source driving circuit in display apparatuses, causing abnormalities in the display screen due to incorrect locking of data signals by the clock data recovery circuit.
Innovation Solution
A timing controller with a control circuit that dynamically adjusts the swing of the data signal based on a lock signal fed back by the source driving circuit, switching between normal and swing boost modes to maintain signal integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the data signal swing is kept at a normal level, then energy consumption is reduced and electromagnetic interference is minimized, but the signal may be interfered by RF noise causing loss of lock
Solution Approach 1:
The patent implements dynamic swing adjustment of the data signal based on detected RF noise conditions. The control circuit switches between a first swing level during normal operation and a second, higher swing level when RF noise is detected, allowing the system to adapt to changing electromagnetic environments and maintain reliable signal locking while minimizing interference during normal conditions
Solution Approach 2:
The patent employs a feedback mechanism where the control circuit detects the presence of RF noise and adjusts the data signal swing accordingly. The detection of RF noise conditions triggers a switch from normal operation mode to noise-resistant mode with elevated signal swing, and the system can return to normal mode when noise is absent, creating a closed-loop adaptive system
2Reliability
If the data signal swing is boosted to resist RF noise, then signal locking reliability is improved, but electromagnetic interference and energy consumption increase
Solution Approach 1:
The system dynamically adjusts the data signal swing based on detected RF noise conditions. During normal operation, the signal uses a first swing level that generates minimal electromagnetic interference. When RF noise is detected, the control circuit switches to a second, higher swing level that provides resistance against the interfering noise, thereby adaptively balancing between interference generation and noise resistance
Solution Approach 2:
The patent changes the amplitude parameter of the data signal dynamically. The control circuit switches between a first swing level (normal operation) and a second swing level (noise-resistant mode). This parameter change allows the system to optimize the trade-off between electromagnetic interference and noise resistance based on real-time RF noise detection
3Reliability
If the data signal swing is continuously boosted, then RF noise resistance is maximized, but energy consumption increases
Solution Approach 1:
The system implements dynamic swing adjustment based on detected RF noise conditions. During normal operation, the data signal uses a first swing level that consumes minimal energy. When RF noise is detected, the control circuit temporarily switches to a second, higher swing level that provides enhanced noise resistance. This dynamic approach ensures energy is only consumed at elevated levels when actually needed for noise resistance
Solution Approach 2:
The patent dynamically changes the amplitude parameter of the data signal between a first swing level (low energy consumption) and a second swing level (high noise resistance). The control circuit switches between these parameter states based on RF noise detection, ensuring that energy consumption is optimized by maintaining high swing only when noise resistance is required
Data Source
AI summary
A timing controller and an operation method thereof are provided. The timing controller includes a transmitter circuit and a control circuit. The control circuit ends a normal mode and enter a swing boost mode when quality of data signal is detected to be deteriorated in the normal mode. In the swing boost mode, the control circuit boosts the swing of the data signal to be higher than a normal level of the data signal in the normal mode.