Signal Width Repair Circuit for Narrowed Pulse Recovery
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Solution Overview
Problem
In integrated circuits, signal width issues arise due to time mismatches or long transmission paths, leading to signal narrowing and failure to meet minimum use requirements for next-stage circuits, affecting normal operation.
Innovation Solution
A signal width repair circuit comprising a delay circuit, a signal reconstruction circuit, and a signal selection circuit that delays and repairs input signals to ensure the output signal width meets preset requirements, using a combination of NOR gates and multiplexers to selectively output a target signal with the desired width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If signal transmission path is extended or time mismatch occurs, then signal coverage area increases, but signal width narrows below minimum requirement
Solution Approach 1:
The delay circuit performs preliminary action by delaying one of the input signals before they are combined in the signal reconstruction circuit. This preliminary delay ensures that when signals are combined, their time alignment is corrected, preventing signal width narrowing and maintaining the minimum required signal width for next-stage circuits.
Solution Approach 2:
The signal reconstruction circuit acts as an intermediary between the delay circuit and the output. It receives the delayed signal and the original signal, performs reconstruction operations using logic gates, and outputs a repaired signal with restored width, thereby mediating the signal width issue caused by transmission path differences.
2Reliability
If signal width is expanded to meet minimum requirements, then next-stage circuit reliability improves, but circuit complexity increases
Solution Approach 1:
The signal width repair circuit is segmented into three functional modules: delay circuit, signal reconstruction circuit, and signal selection circuit. Each module performs a specific function, making the overall complex task of signal width repair manageable and maintainable while ensuring reliable operation of next-stage circuits.
Solution Approach 2:
The signal selection circuit dynamically selects between the original signal and the repaired signal based on width requirements. This dynamic selection capability allows the circuit to adapt to different signal conditions and maintain reliability without permanently increasing complexity for all operating conditions.
3Duration of action of moving object
If delay duration is increased to compensate for time mismatch, then signal width is restored, but time delay exceeds preset duration
Solution Approach 1:
The circuit uses feedback mechanisms where the signal reconstruction circuit monitors the combined signal width and adjusts the delay application accordingly. The signal selection circuit also provides feedback by selecting the appropriate signal path based on whether the repaired signal meets width requirements, preventing excessive delay application.
Solution Approach 2:
The delay circuit applies parameter changes by adjusting the delay duration to the minimum necessary amount rather than a fixed large delay. This controlled parameter adjustment restores signal width while minimizing time loss, and the preset duration constraint ensures the delay does not exceed acceptable limits.
Data Source
AI summary
There are provided a signal width repair circuit and method, and an electronic device. The signal width repair circuit includes: a delay circuit, configured to receive an input signal, and delay the input signal for a preset duration to obtain a delayed signal, the input signal being a high-level signal; a signal reconstruction circuit, configured to receive the input signal and the delayed signal, and repair the input signal and the delayed signal to obtain a repaired signal; and a signal selection circuit, configured to receive the input signal and the repaired signal and select one of the input signal and the repaired signal for output, to obtain a target signal that has a width satisfying a preset width, the preset duration being equal to or greater than a duration with the preset width.