FSM State Buffering for Power-Up Sequence Failure Diagnosis

The patent applies preliminary action by storing the FSM state data in a buffer before any failure occurs. The buffer is continuously updated with state information during normal operation, so when a power-up sequence failure happens, the data is already captured and ready for immediate retrieval and analysis, eliminating the need for time-consuming post-failure investigation.

The patent introduces an intermediary buffer between the FSM and the external debugging interface. This buffer acts as a mediator that captures and holds state information, allowing external controllers to retrieve diagnostic data without adding significant complexity to the core power management logic. The buffer serves as a simple storage intermediary that bridges the FSM and debugging tools.

The patent extracts the diagnostic data storage function from the main FSM control logic and places it in a separate buffer. This extraction allows the FSM to remain simple while the buffer handles the complexity of data storage and retrieval. The failure detection capability is improved without significantly complicating the core control device, as the buffer is a standalone component.

The patent creates a copy of the FSM state data in the buffer rather than modifying the original FSM structure. This copying approach allows external controllers to retrieve diagnostic information without affecting the FSM's primary function. The buffer contains a replicated version of the state data, enabling troubleshooting while keeping the original control logic simple and unchanged.