Logic Signal Analyzer Multi-Mode Comparison Without Rewiring
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Solution Overview
Problem
Existing logic signal analyzers require changes in the measurement setup or wiring to switch between different comparison modes, making them less versatile and user-friendly when measuring differential logic signals.
Innovation Solution
A logic signal analyzer with multiple input voltage values and a comparison unit that allows for various comparison modes without altering the wiring, enabling separate measurement of single signals and common mode, and determining signal delays, using a combination of resistors, switching units, and comparison components like differential amplifiers and comparators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the comparison mode is changed by modifying the wiring or measurement setup, then the measurement capability is improved, but the device complexity and ease of operation deteriorate
Solution Approach 1:
The logic signal analyzer incorporates a comparison unit capable of performing multiple comparison modes (differential comparison, single-ended comparison with ground, single-ended comparison with external voltage, and common-mode comparison) within a single device. This multi-functional design eliminates the need for different wiring configurations for different measurement types, allowing one device to replace multiple specialized instruments while maintaining measurement versatility
2Adaptability or versatility
If the comparison mode is changed by modifying the wiring or measurement setup, then the measurement capability is improved, but the ease of operation deteriorates
Solution Approach 1:
The comparison unit employs switching mechanisms that dynamically reconfigure the comparison mode based on user selection without requiring physical rewiring. The device can switch between differential mode, single-ended modes, and common-mode comparison through internal switching, making the measurement process adaptable and easy to change while maintaining operational simplicity
3Adaptability or versatility
If multiple comparison modes are integrated into a single device, then the versatility is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple comparison functions (differential amplifier-based comparison, single-ended comparison with ground reference, single-ended comparison with external voltage reference, and common-mode comparison) into a unified comparison unit. By merging these functions into a single integrated circuit block with shared input stages and switching mechanisms, the design achieves high versatility while controlling internal complexity through functional integration rather than separate discrete circuits
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
Enables flexible and easy switching between comparison modes without modifying the measurement setup, allowing for precise measurement of differential logic signals, including p-side, n-side, and common mode, and determining signal delays with improved user convenience and cost-efficiency.
Implementation Method 1
the logic signal analyzer comprises at least an average signal line connected to the positive measurement input via a first resistor and the negative measurement input via a second resistor. In this way, a signal corresponding to the average between the two signals of the differential logic signal can be created.
Data Source
AI summary
A logic signal analyzer for analyzing logic signals has a positive measurement input providing a positive measurement input voltage value, a negative measurement input providing a negative measurement input voltage value, a third input providing a third input voltage value, and a comparison unit. The comparison unit being configured to provide a first and a second comparison output voltage value each based on one of at least four comparison modes. The first and second comparison output values are based on different comparison modes.