Strobe Buffer Duty Error Correction Circuit
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Solution Overview
Problem
Current semiconductor memory devices face challenges in improving data transmission accuracy and reducing power consumption, particularly in correcting strobe signals which are crucial for synchronized data communication between devices.
Innovation Solution
The semiconductor memory device incorporates a strobe buffer with a detector and corrector to compare and correct strobe signals, ensuring phase alignment and reducing power consumption by activating correction only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If strobe signal correction is continuously applied to improve data transmission accuracy, then transmission accuracy is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic action by enabling strobe signal correction only during specific operations (write operations or when duty ratio error exceeds a threshold) rather than continuously. The control circuit activates the correction function conditionally, turning it on when needed and off when not needed, thus reducing overall power consumption while maintaining data transmission accuracy when correction is actually required
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting the duty ratio of strobe signals based on detected errors. The control circuit modifies the duty ratio parameter of the strobe signal to correct transmission accuracy issues, and this parameter adjustment is applied selectively rather than continuously, resolving the contradiction between maintaining accuracy and reducing power consumption
2Measurement precision
If strobe signal correction is applied to improve data transmission accuracy, then transmission accuracy is improved, but device complexity increases
Solution Approach 1:
The patent applies universality by designing a control circuit that performs multiple functions: it detects duty ratio errors in strobe signals, determines whether correction is needed, and generates control signals to adjust the duty ratio. This multi-functional approach consolidates what could be separate complex components into a single integrated control unit, improving accuracy while limiting the increase in overall device complexity
Solution Approach 2:
The patent introduces an intermediary control circuit that mediates between the strobe signal source and the data transmission process. This control circuit acts as an intermediate component that detects errors and applies corrections without requiring fundamental changes to the existing memory device architecture, thus improving accuracy while minimizing the increase in device complexity
Data Source
AI summary
Inventive concepts relates to a semiconductor memory device. The semiconductor memory device may include a first buffer configured to receive a first signal, a second buffer configured to receive a second signal, a detector configured to compare a first phase of the first signal received by the first buffer to a second phase of the second signal received by the second buffer and to generate a detection signal, and a corrector activated or inactivated in response to a detection signal. The corrector may be configured to correct the first signal received by the first buffer and the second signal received by the second buffer, when the corrector is activated in response to the detection signal.