Adaptive Buffer Circuit for Glitch Noise Filtering
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Solution Overview
Problem
Existing buffer circuits in semiconductor technology are ineffective in managing noise pulses, known as glitches, which can cause erroneous outputs and temporary system failures due to their inability to adaptively adjust voltage levels in response to varying noise frequencies.
Innovation Solution
A buffer circuit with a power control circuit, an inverting circuit, and a voltage adjustment circuit that dynamically adjusts voltage levels based on an input signal and a mode signal, operating in either a Schmitt trigger mode or a general inverter mode to stabilize output signals and minimize noise impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a general buffer circuit is used, then the device complexity is low, but the reliability is poor due to inability to filter noise pulses
Solution Approach 1:
The patent implements dynamic voltage level adjustment by detecting noise frequency and adaptively changing the voltage levels of the first and second voltages. The voltage adjustment circuit modifies voltage levels based on detected noise characteristics, allowing the buffer circuit to dynamically adapt to varying noise conditions rather than using fixed voltage levels.
Solution Approach 2:
The patent changes the voltage level parameters of the power supply voltages based on detected noise frequency. When noise is detected, the voltage adjustment circuit modifies the voltage levels to filter noise pulses. This parameter change approach allows the same circuit structure to handle different noise conditions by adjusting voltage levels rather than requiring completely different circuit topologies.
2Adaptability or versatility
If voltage levels are fixed, then the ease of operation is high, but the adaptability is poor for varying noise frequencies
Solution Approach 1:
The buffer circuit performs self-adjustment by automatically detecting noise frequency through the frequency detection circuit and autonomously modifying its own voltage levels through the voltage adjustment circuit. This self-service mechanism eliminates the need for external control or manual adjustment, allowing the circuit to adapt to varying noise conditions independently.
Solution Approach 2:
The patent implements a feedback mechanism where the frequency detection circuit continuously monitors the input signal for noise pulses and provides feedback to the voltage adjustment circuit. This feedback loop enables real-time detection and response to noise conditions, allowing the voltage levels to be automatically adjusted based on actual noise characteristics rather than predetermined settings.
Data Source
AI summary
A buffer circuit includes a power control circuit, an inverting circuit, and a voltage adjustment circuit. The power control circuit is configured to provide voltages based on an input signal and a mode signal, and the inverting circuit is configured to receive and invert the voltages to generate an output signal. The voltage adjustment circuit is configured to adjust voltage levels based on the mode signal and the output signal.