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Digital security system, method and program

  • US 9,761,120 B2
  • Filed: 10/28/2013
  • Issued: 09/12/2017
  • Est. Priority Date: 10/28/2013
  • Status: Expired due to Fees
First Claim
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1. A digital security system comprising:

  • abdominal pressure signal acquiring means configured to acquire an abdominal pressure signal from an abdominal pressure sensor that detects an abdominal pressure of a person, the abdominal pressure signal acquiring means is configured to acquire a respiration signal from a respiration sensor that detects breathing of the person;

    abdominal pressure signal extracting means configured to generate an abdominal pressure signal with suppressed influence of respiration by subtracting the respiration signal from the abdominal pressure signal;

    abnormality determining means configured to use the abdominal pressure signal to determine whether or not an abnormality exists; and

    control means configured to report an abnormal situation when the abnormality determining means determines that the abnormality exists,wherein the abnormality determining means is configured to determine that that the abnormality exists either when the abdominal pressure signal is consistent with a predetermined abdominal pressure pattern or when the abdominal pressure signal is in a predetermined range.

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