Semiconductor Signal Feedback Control for High-Speed Low-Power Links
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Solution Overview
Problem
As semiconductor devices operate at increasingly faster speeds, accurately transmitting signals while minimizing power consumption becomes increasingly difficult.
Innovation Solution
A semiconductor system comprising a first and second semiconductor device, where the first device compares received signals to generate control signals to drive original signals, and the second device receives these signals to generate restoration signals, allowing for efficient transmission and adjustment of driving forces or gains to optimize signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If semiconductor devices operate at faster speeds, then processing capability is improved, but signal transmission accuracy deteriorates and power consumption increases
Solution Approach 1:
The patent implements a feedback mechanism where the receiving device compares the received signal with the original signal and generates a driving force control signal based on the comparison result. This control signal is fed back to the transmitting device to adjust the driving force, thereby compensating for signal degradation and improving transmission accuracy at high speeds.
Solution Approach 2:
The patent dynamically adjusts the driving force of the signal based on the comparison between received and original signals. By making the driving force adjustable rather than fixed, the system can optimize signal transmission characteristics in real-time to maintain accuracy at higher operating speeds.
2Speed
If semiconductor devices operate at faster speeds, then processing capability is improved, but power consumption increases
Solution Approach 1:
The patent employs dynamic adjustment of driving force based on actual signal transmission quality. Instead of maintaining maximum driving force continuously, the system adjusts it according to the comparison result between received and original signals, reducing unnecessary power consumption while maintaining high-speed operation.
Solution Approach 2:
The patent changes the driving force parameter dynamically based on signal transmission conditions. By adjusting this key parameter according to the comparison between received and original signals, the system optimizes the balance between speed and power consumption.
3Reliability
If driving force is increased to improve signal transmission, then signal accuracy is improved, but power consumption increases
Solution Approach 1:
The patent uses feedback control where the driving force is adjusted based on the comparison between received and original signals. This ensures that driving force is increased only when necessary to improve signal accuracy, rather than being continuously high, thereby reducing overall power consumption.
Solution Approach 2:
The patent applies partial action by adjusting the driving force only to the extent necessary to achieve acceptable signal transmission accuracy. Instead of always using excessive driving force, the system applies just enough adjustment to maintain reliability, reducing wasted energy.
Data Source
AI summary
A semiconductor system may include a first semiconductor device and a second semiconductor device. The first semiconductor device compares a received signal with an original signal to generate a driving force control signal. The first semiconductor device also drives the original signal using a driving force in accordance with the driving force control signal to output an external transmission signal. The second semiconductor device receives the external transmission signal to generate a positive signal and a negative signal. The second semiconductor device also generates a restoration signal in response to the positive signal and the negative signal. The second semiconductor device additionally outputs the restoration signal as the external transmission signal to the first semiconductor device.