公开(公告)号：US11726160B2

公开(公告)日：2023-08-15

申请号：US17694304

申请日：2022-03-14

Applicant: ORACLE INTERNATIONAL CORPORATION

Inventor： Edward R. Wetherbee ,  Andrew Lewis ,  Michael Dayringer ,  Guang C. Wang ,  Kenny C. Gross

IPC: G01R35/00 ,  G01R29/08

CPC classification number: G01R35/005 ,  G01R29/0814 ,  G01R29/0892

Abstract: Systems, methods, and other embodiments associated with automated calibration in electromagnetic scanners are described. In one embodiment, a method includes: detecting one or more peak frequency bands in electromagnetic signals collected by the electromagnetic scanner at a geographic location; comparing the one or more peak frequency bands to broadcast frequencies assigned to local radio stations of the geographic location; and indicating that the electromagnetic scanner is calibrated by finding at least one match between one peak frequency band of the peak frequency bands and one of the broadcast frequencies. An electromagnetic scanner may be recalibrated based on comparing the one or more peak frequency bands to broadcast frequencies.

公开(公告)号：US11460500B2

公开(公告)日：2022-10-04

申请号：US16784506

申请日：2020-02-07

Applicant: ORACLE INTERNATIONAL CORPORATION

Inventor： Edward R. Wetherbee ,  Guang C. Wang ,  Kenny C. Gross ,  Michael Dayringer ,  Andrew Lewis ,  Matthew T. Gerdes

IPC: G01R31/28 ,  G01R31/302 ,  G06F21/55 ,  G06K9/62 ,  G01R31/00 ,  G06K9/00

Abstract: Detecting whether a target device that includes multiple electronic components is genuine or suspected counterfeit by: performing a test sequence of energizing and de-energizing the target device and collecting electromagnetic interference (EMI) signals emitted by the target device; generating a target EMI fingerprint from the EMI signals collected; retrieving a plurality of reference EMI fingerprints from a database library, each of which corresponds to a different configuration of electronic components of a genuine device of the same make and model as the target device; iteratively comparing the target EMI fingerprint to the retrieved reference EMI fingerprints and generating a similarity metric between each compared set; and indicating that the target device (i) is genuine where the similarity metric for any individual reference EMI fingerprint satisfies a threshold test, and is a suspect counterfeit device where no similarity metric for any individual reference EMI fingerprint satisfies the test.

公开(公告)号：US11275144B2

公开(公告)日：2022-03-15

申请号：US16820807

申请日：2020-03-17

Applicant: ORACLE INTERNATIONAL CORPORATION

Inventor： Edward R. Wetherbee ,  Andrew Lewis ,  Michael Dayringer ,  Guang C. Wang ,  Kenny C. Gross

IPC: G01R35/00 ,  G01R29/08

Abstract: Systems, methods, and other embodiments associated with automated calibration of electromagnetic interference (EMI) fingerprint scanning instrumentation based on radio frequencies are described. In one embodiment, a method for detecting a calibration state of an EMI fingerprint scanning device includes: collecting electromagnetic signals with the EMI fingerprint scanning device for a test period of time at a geographic location; identifying one or more peak frequency bands in the collected electromagnetic signals; comparing the one or more peak frequency bands to assigned radio station frequencies at the geographic location to determine if a match is found; and generating a calibration state signal based at least in part on the comparing to indicate whether the EMI fingerprint scanning device is calibrated or not calibrated.