Variable Equalization for Crosstalk Minimization in Serial Channels
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Solution Overview
Problem
Existing information handling systems face challenges in minimizing crosstalk in serial channels due to static equalization ranges, which can lead to signal degradation and inefficiencies in data transmission.
Innovation Solution
The system employs a transmitter and receiver configuration with a channel management module that negotiates and adjusts the equalization range dynamically, using techniques such as random, uniform, or Gaussian distribution to generate varying equalization values across lanes, minimizing crosstalk by ensuring non-alignment of equalization values between lanes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If static equalization ranges are used in serial channels, then device complexity is reduced and ease of operation is improved, but crosstalk minimization deteriorates and signal degradation increases
Solution Approach 1:
The patent applies dynamics by transitioning from static equalization ranges to dynamic equalization ranges that vary across different lanes. Each lane is assigned a different equalization range selected from a set of possible ranges, creating temporal and spatial variability that prevents consistent crosstalk patterns while maintaining operational simplicity through automated management.
Solution Approach 2:
The patent implements local quality by assigning different equalization ranges to different lanes rather than using a uniform static range across all lanes. This localized differentiation ensures that each lane operates with optimized parameters tailored to its specific characteristics, reducing inter-lane crosstalk while maintaining overall system ease of operation through centralized control.
2Object-affected harmful factors
If dynamic equalization ranges are implemented to minimize crosstalk, then crosstalk minimization is improved, but device complexity increases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting equalization range parameters across different lanes. A set of possible equalization ranges is maintained, and different ranges are assigned to different lanes based on predetermined patterns or optimization criteria. This parameter variation effectively reduces crosstalk while the automated selection and management processes keep the increase in device complexity manageable.
Data Source
AI summary
An information handling system transmitter has a channel management module configured to negotiate and to lock a static transmitter equalization range. Control logic selects a setting adjustment for the locked transmitter equalization range; selects a variation type; applies the selected setting adjustment using the selected variation type, and instructs the transmitter channel management module to re-negotiate the updated transmitter equalization range. A receiver may negotiate and re-negotiate with the transmitter in order to receive the updated transmitter equalization range. The receiver may auto-adapt the updated transmitter equalization range to receive the transmitted data.