Patent ID: 11969855
Assignee: APPLIED MATERIALS, INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B  G | IPC B

Claim 15:
16. A non-transitory computer readable medium having instructions for causing one or more computers to:
receive a signal from a sensor of an in-situ monitoring system that monitors a substrate during polishing of the substrate, the signal including a sequence of measured values;
filter the signal to generate a filtered signal, the filtered signal including a sequence of adjusted values, the instructions to filter including instructions to
model a plurality of periodic disturbances at a plurality of different frequencies,
model an underlying signal, and
apply a linear prediction filter to the modelled underlying signal with the modelled plurality of periodic disturbances to generate the filtered signal representing the underlying signal with the periodic disturbances filtered out; and

cause the polishing system to at least one of halt polishing of the substrate or adjust a polishing rate of the substrate based on the filtered signal.