Patent ID: 11899437
Assignee: HITACHI HIGH-TECH CORPORATION
Field: Control (Instruments)
Classification: CPC G  H | IPC G

Claim 11:
12. A diagnosis system that diagnoses a state of a device for measuring or inspecting a sample, the diagnosis system comprising:
a computer system configured to estimate a cause for an error occurring in the device,
wherein the computer system includes a learning device configured to cluster, by machine learning, a combination of one or more of process content data that describes a content of an inspection process to be executed by the device, an inspection condition by the device, and attribute data that describes an attribute of the device,
when the error occurs in the device after the learning device executes the machine learning, the computer system inputs a first combination of one or more of the process content data that describes the content of the inspection process to be executed by the device when the error occurs, the inspection condition when the error occurs, and the attribute data to the learning device, so as to classify the first combination into one of clusters obtained by the clustering, and
the computer system acquires an estimation result on whether or not the error occurs based on a result of the classification and outputs the estimation result,
wherein the device is configured to acquire an image of the sample,
the learning device learns, as the content of the inspection process, at least one of alignment of aligning a coordinate system of a stage on which the sample is placed and a coordinate system of the device, addressing of moving an inspection position to an inspection point on the sample, adjustment of an auto focus mechanism, auto astigmatism, or auto brightness contrast control,
the learning device learns, as the inspection condition, at least one of a field of view size acquired during the addressing, the number of images acquired during the adjustment of the auto focus mechanism, a cumulative number of frames of the image, a distance between a shape pattern and an inspection point on the sample used during the adjustment of the auto focus mechanism, a relative direction between a shape pattern and an inspection point on the sample used during the adjustment of the auto focus mechanism, or a lens condition, and
the learning device learns, as the attribute of the device, at least one of an identifier of the device or a characteristic of an environment where the device is provided.