Communication Link Feedback Control for Adaptive Signal Swing
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Solution Overview
Problem
Electronic devices face challenges in accurately restoring data due to signal disturbances from external noise, leading to errors in operations, particularly as data transmission speeds increase.
Innovation Solution
Incorporating an error detector and error adjuster in electronic devices to detect and mitigate noise by adjusting voltage swing width and gain of amplification circuits, thereby reducing the impact of external interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data transmission speed is increased, then productivity is improved, but reliability deteriorates due to signal disturbances and noise
Solution Approach 1:
The patent implements a feedback mechanism where the receiving device detects errors in received signals and transmits error detection results back to the transmitting device. The transmitting device then adjusts its voltage swing width based on this feedback to improve signal quality and reduce errors, thereby maintaining reliability at high transmission speeds
Solution Approach 2:
The patent dynamically changes the voltage swing width parameter of the transmission signal based on detected error rates. When errors are detected, the voltage swing width is increased to improve signal integrity; when no errors are detected, it is reduced to minimize power consumption, thus maintaining reliability while optimizing performance
2Reliability
If voltage swing width is increased to improve signal quality, then reliability is improved, but use of energy worsens
Solution Approach 1:
The patent makes the voltage swing width dynamic rather than fixed. The transmitting device adjusts the voltage swing width in real-time based on error detection feedback from the receiving device, increasing voltage swing only when necessary to correct signal quality issues and reducing it when signal quality is sufficient, thereby optimizing the balance between reliability and power consumption
Solution Approach 2:
The patent changes the voltage swing width parameter dynamically based on detected error rates. When errors are detected, the voltage swing width is increased to improve signal integrity; when no errors are detected, it is reduced to minimize power consumption, thus maintaining reliability while optimizing energy use
3Reliability
If error detection and adjustment mechanisms are added, then reliability is improved, but device complexity worsens
Solution Approach 1:
The patent implements multi-functional components that perform multiple tasks. The error detector not only detects errors but also provides feedback for voltage swing adjustment. The voltage swing controller adjusts both transmission voltage and reception amplification gain. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in device complexity
Solution Approach 2:
The patent uses a feedback loop where error detection results are transmitted back to the transmitting device, which then adjusts its voltage swing width. This feedback mechanism enables automatic adaptation to channel conditions without requiring complex manual configuration or multiple separate control systems, thus improving reliability while controlling complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances the devices' immunity to signal disturbances, minimizing errors and power consumption while maintaining effective data transmission.
Implementation Method 1
an amplify circuit amplifying the data signal provided by an external device through a first channel
Implementation Method 2
an error adjuster controlling an output swing level of the transmission driver and a voltage gain of the amplify circuit in response to the error detection signal
Data Source
AI summary
Provided is a communication system including a first electronic device and a second electronic device connected with each other through first and second channels. The second electronic device includes a reception driver generating a first internal signal based on a first data signal provided by the first electronic device through the first channel, an error detector generating an error detection signal by determining whether an error is included in the first internal signal, and an error adjuster outputting a first feedback signal through the second channel based on the error detection signal, and the first electronic device outputs a second data signal having a voltage swing width determined based on the first feedback signal through the first channel.