Adaptive Transmission Signal Levels for Uneven Channel Loading
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Solution Overview
Problem
In point-to-point connections between controllers and semiconductor chips, channel loading variations lead to inefficient signal transmission, causing power wastage and electromagnetic interference (EMI), as the same signal level is applied across all channels, regardless of distance, potentially failing to reach chips far from the controller.
Innovation Solution
A device that includes a controller to adjust signal levels based on channel loading between the controller and semiconductor devices, such as column drivers and gate drivers in an LCD, ensuring that each semiconductor device receives a signal level proportional to its distance, thereby optimizing signal transmission and reducing power consumption and EMI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driving strength of the controller is indiscriminately determined to ensure sufficient signal level for the farthest chip, then the signal-to-noise ratio (SNR) is improved for distant channels, but power is wasted and electromagnetic interference (EMI) occurs in adjacent chips
Solution Approach 1:
The patent applies local quality by assigning different signal levels to different channels based on their specific characteristics. The controller identifies which channels are connected to distant chips and increases signal levels only for those specific channels, while maintaining lower signal levels for channels connected to adjacent chips. This resolves the contradiction by improving SNR only where needed (distant channels) without causing unnecessary power waste or EMI in other channels.
Solution Approach 2:
The patent implements dynamics by making the signal level adjustable and adaptive rather than fixed. The controller dynamically determines the appropriate signal level for each channel based on detected channel loading conditions. This allows the system to optimize power consumption and SNR by adapting signal levels to actual operational needs, resolving the contradiction between maintaining reliable signal transmission and minimizing power waste.
2Reliability
If the driving strength of the controller is indiscriminately determined to ensure sufficient signal level for the farthest chip, then the signal can reach distant chips, but electromagnetic interference (EMI) occurs in chips adjacent to the controller
Solution Approach 1:
The patent applies local quality by assigning different signal levels to different channels based on their specific characteristics. The controller identifies which channels are connected to distant chips and increases signal levels only for those specific channels, while maintaining lower signal levels for channels connected to adjacent chips. This resolves the contradiction by improving signal transmission reliability only where needed (distant channels) without causing unnecessary EMI in other channels.
3Reliability
If the signal level is increased to reach chips far from the controller, then signal transmission is improved, but power consumption increases
Solution Approach 1:
The patent applies local quality by assigning different signal levels to different channels based on their specific characteristics. The controller identifies which channels are connected to distant chips and increases signal levels only for those specific channels, while maintaining lower signal levels for channels connected to adjacent chips. This resolves the contradiction by improving signal transmission only where needed (distant channels) without unnecessary power consumption in other channels.
Solution Approach 2:
The patent implements dynamics by making the signal level adjustable and adaptive rather than fixed. The controller dynamically determines the appropriate signal level for each channel based on detected channel loading conditions. This allows the system to optimize power consumption and signal transmission by adapting signal levels to actual operational needs, resolving the contradiction between maintaining reliable signal transmission and minimizing power waste.
Data Source
AI summary
A device for controlling the level of a transmission signal according to the channel loading is provided. The device may include a plurality of semiconductor devices and a controller to control the plurality of semiconductor devices. The controller may control the level of a signal to be transmitted to each of the plurality of semiconductor devices according to the channel loading on each semiconductor device.