Integrated Circuit Power Supply State Detection Logic
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Solution Overview
Problem
Existing integrated circuits lack an effective method to detect abnormality in power supply voltage, which can lead to malfunction and increased susceptibility to noise, particularly when using analog signals for power supply state determination.
Innovation Solution
An integrated circuit design that includes an output circuit, a logic circuit, and a determination circuit, where the logic circuit outputs a result signal based on the inspection signal and power supply state, allowing the determination circuit to detect power supply abnormalities using digital signals, reducing noise influence and enabling compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If analog signals are used for power supply state determination, then the detection capability is improved, but the susceptibility to noise increases
Solution Approach 1:
The patent replaces analog signal processing with a digital logic circuit system. The logic circuit receives an inspection signal and outputs a result signal based on the power supply state, using digital logic operations instead of analog signal analysis. This substitution eliminates the noise susceptibility inherent in analog systems while maintaining detection capability through digital signal processing.
Solution Approach 2:
The patent introduces an intermediary logic circuit between the power supply and the determination circuit. This logic circuit processes the inspection signal and generates a result signal that reflects the power supply state. The intermediary logic circuit acts as a buffer that isolates the determination circuit from direct exposure to noisy power supply fluctuations, enabling reliable detection without noise interference.
2Area of stationary object
If a compact design is implemented, then the device size is reduced, but the noise filtering capability may be compromised
Solution Approach 1:
The patent replaces traditional analog noise filtering circuits with a digital logic circuit implementation. The logic circuit uses digital signal processing to inherently reject noise without requiring large analog filtering components. This approach achieves effective noise filtering in a compact form factor suitable for modern integrated circuits.
Solution Approach 2:
The patent changes the operational parameters from analog signal levels to digital logic levels. By operating at discrete digital voltage thresholds rather than continuous analog levels, the system achieves noise immunity through parameter quantization. This parameter change enables compact design because digital logic gates require minimal space compared to analog filtering components.
3Power
If the recommended operating voltage is exceeded, then the power supply capacity is increased, but the risk of malfunction increases
Solution Approach 1:
The patent implements preliminary detection of power supply abnormalities before they cause malfunction. The logic circuit continuously monitors the power supply state by processing inspection signals and generating result signals that indicate abnormal conditions. This preliminary detection enables early warning or protective actions before voltage exceedance leads to circuit damage or malfunction, maintaining reliability even when power supply capacity is increased.
Solution Approach 2:
The patent establishes a feedback mechanism where the logic circuit outputs a result signal based on the inspected power supply state. This feedback loop continuously monitors voltage conditions and provides real-time information about power supply health. The feedback enables the system to detect and respond to voltage abnormalities, reducing malfunction risk even when operating at higher power supply capacities.
Data Source
AI summary
Provided is an integrated circuit that detects the state of the power supply of the integrated circuit using a logic circuit. An integrated circuit 10 includes an output circuit that outputs an inspection signal; a logic circuit 32 that is supplied with power from a first power supply S1 and outputs a result signal based on the inspection signal and the state of the first power supply S1 in response to the inspection signal being input; and a determination circuit 24 that is supplied with power from a second power supply S2 different from the power supply and determines the state of the logic circuit 32 based on the inspection signal and the result signal respectively input from the output circuit and the logic circuit 32.