Circuit analysis method, circuit analysis device, and circuit analysis system

A circuit analysis device, comprising:

• a circuit graph building module configured to build a circuit graph based on a netlist of a circuit;
• an X event extracting module configured to extract an X event based on a waveform built as a result of simulation for a node defined in the circuit graph;
• an X event linking module configured to build an X event node from the X event that was extracted, and link the X event node to at least one other X event node to build an X event graph;
• a graph traversing module configured to traverse the X event graph and identify a source X event and an involvement X event;
• and
• an X path finding module configured to find an X propagation path for the X event node, the X propagation path comprising the source X event and the involvement X event.

A circuit analysis system, comprising:

• a netlist database configured to store a netlist of a circuit;
• a simulation database configured to store a waveform built as a result of simulation for a node defined in the circuit;
• and
• a circuit analyzing device, wherein the circuit analyzing device comprises:
• a circuit graph building module configured to build a circuit graph based on the netlist from the netlist database;
• an X event extracting module configured to extract an X event for the node based on the waveform from the simulation database;
• an X event linking module configured to build an X event node from the X event that was extracted, and configured to link the X event node to at least one other X event node to build an X event graph;
• a graph traversing module configured to traverse the X event graph and configured to identify a source X event and an involvement X event;
• and
• an X path finding module configured to find an X propagation path for the X event node, the X propagation path comprising the source X event and the involvement X event.