Current Comparison Circuit for Low-Power Binary Conversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing devices lack an efficient method to compare and transform input currents into digital values while minimizing electrical power loss and complexity, particularly in analog-to-digital conversion processes.
Innovation Solution
A device with a first input for receiving an input current and a second input for receiving a reference current, which compares the input current to the reference current to output an output current, reducing power loss by adjusting the output based on the comparison, and using a series circuit of devices with varying reference currents to efficiently convert currents into binary values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the input current is directly processed without comparison and reduction, then the conversion process is simple, but electrical power loss increases in subsequent stages
Solution Approach 1:
The device performs preliminary comparison of the input current with reference current(s) before subsequent processing stages. By determining whether the input current exceeds reference values and pre-calculating difference currents, the system prepares optimized current signals in advance, enabling subsequent stages to operate with reduced current magnitudes and thereby minimizing electrical power loss without requiring complex real-time adjustments downstream
Solution Approach 2:
The patent replaces direct analog current processing with a comparison-based control mechanism. Instead of allowing large currents to flow through all subsequent stages, the system uses comparator devices to detect current relationships and control switches to selectively pass either the input current or pre-calculated difference currents, substituting a control system for what would otherwise require high-power handling throughout the signal chain
2Measurement precision
If multiple devices with different reference currents are used for precise conversion, then conversion precision improves, but device complexity increases
Solution Approach 1:
The conversion process is segmented into multiple independent comparison stages, each handling a specific current range defined by its reference current. The first comparison device handles the range from zero to the first reference current, the second device handles the range from the first to the second reference current, and so on. This segmentation allows precise measurement across different current magnitudes using specialized comparators for each range, improving overall conversion precision while keeping each individual comparison stage relatively simple
Solution Approach 2:
The patent extends the conversion process into a temporal dimension by performing sequential comparisons across multiple stages. Instead of attempting to process all current ranges simultaneously in a single complex device, the system progresses through multiple comparison stages in sequence, with each stage resolving a specific portion of the current range. This multi-dimensional approach breaks down a complex high-precision task into simpler sequential steps
3Ease of manufacture
If the output current corresponds to the full input current, then the conversion is straightforward, but electrical power loss increases in subsequent stages
Solution Approach 1:
The patent introduces difference currents as intermediary signals between the input current and subsequent processing stages. Instead of directly passing the full input current through all stages, the system uses comparison devices to generate difference currents (the amount by which the input current exceeds reference currents) and uses these intermediaries to represent the excess current in a reduced form. This allows subsequent stages to process smaller current magnitudes while still capturing the essential information about the input current's relationship to reference values
Solution Approach 2:
The system changes the parameter of current magnitude by transforming the full input current into a series of difference currents with progressively smaller magnitudes. Each comparison stage transforms the current parameter from a large value (full input current) to a smaller value (difference current), enabling subsequent stages to operate more efficiently. This parameter transformation maintains the informational content while reducing the energy required for processing
Data Source
AI summary
A device including a first input for receiving an input current, a second input for receiving a reference current, and a first output. The device is designed to compare the input current with the reference current and, on the basis of the comparison, to output an output current