In-Field Memory Reliability Assessment via Host Control

The patent implements preliminary action by periodically taking control of memory circuits during idle periods to perform reliability assessments before failures occur. The host system proactively executes assessment routines that evaluate memory cell health, detect potential issues, and mitigate problems before they cause system errors, thus improving reliability without requiring fundamental changes to the memory architecture.

The patent introduces an intermediary assessment mechanism that acts as a mediator between the host system and memory circuits. During idle periods, the host takes control of the memory bus and executes assessment routines that indirectly evaluate memory reliability without requiring direct intervention in the memory control logic, thereby maintaining system simplicity while enabling proactive reliability monitoring.

The patent applies periodic action by scheduling memory reliability assessments during idle periods rather than continuously. The host system monitors for idle conditions and performs assessments at appropriate intervals, balancing the need for reliability evaluation with the requirement to minimize impact on system operational time. This periodic approach ensures timely detection of memory issues without consuming excessive resources during active operations.

The patent implements partial action by assessing only portions of the memory array during each idle period rather than the entire memory space. The host system selectively evaluates specific memory circuits or regions based on priority and resource availability, performing sufficient assessment to detect potential failures without the overhead of complete memory scanning, thus reducing time loss while maintaining effective reliability monitoring.

The patent resolves this contradiction by implementing periodic assessments during idle periods when the memory system is not actively being accessed. The host system monitors for idle conditions and only takes control of the memory circuit when no operations are pending, ensuring that reliability evaluations are performed without interrupting normal memory throughput during active operations.

The patent applies preliminary action by performing reliability assessments in advance during idle periods before memory operations resume. This proactive approach ensures that memory reliability is evaluated and potential issues are mitigated before they can impact normal operations, maintaining high productivity during active periods while still achieving thorough reliability monitoring.