Refresh Period Signal Circuit Timing Glitch Prevention

The patent applies preliminary action by generating a timing margin signal in advance that predicts potential timing conflicts between the refresh escape command and oscillation signal. This timing margin signal is generated before the actual refresh operation completes, allowing the system to proactively prevent glitch formation rather than reacting after timing distortion occurs. The signal controller uses this pre-generated timing information to adjust signal timing and avoid the harmful interaction that causes refresh period signal glitches.

The patent implements feedback by continuously monitoring the timing relationship between the refresh escape command and oscillation signal through the timing margin signal generation. The signal controller receives feedback about timing conditions and dynamically adjusts the refresh period signal generation accordingly. This closed-loop feedback mechanism ensures that even when the refresh duration signal is inactivated, the system maintains sufficient timing margins by detecting and responding to timing conditions in real-time, preventing abnormal oscillation signal generation.

The patent introduces a timing margin signal as an intermediary element that mediates between the refresh escape command and the oscillation signal. This intermediary signal acts as a buffer that ensures sufficient timing margins are maintained regardless of which frequency division is currently active. The timing margin signal generation circuit processes the relationship between commands and oscillation signals, providing a protective layer that ensures adequate pulse width for the refresh period signal even when timing distortion occurs during frequency signal switching.