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Portable measurement apparatus

  • US 6,449,583 B1
  • Filed: 08/08/2000
  • Issued: 09/10/2002
  • Est. Priority Date: 08/10/1999
  • Status: Expired due to Fees
First Claim
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1. A portable measurement apparatus, comprising:

  • measurement means for measuring a performance-related variable and outputting measured data based on the measurement result;

    measured data storing means for storing the measured data;

    statistical data storing means for storing statistical data comprising a statistical value obtained by performing at least one statistical process on the measured data;

    setting means for allowing a user to determine whether the measured data is to be stored and, if so, whether the data is to be stored in the measured data storing means so that measured data can be stored for statistical analysis at any desired time or in the statistical data storing means so that the at least one statistical process is performed at predefined times;

    a control section for performing the at least one statistical process;

    data storing control means for controlling data storing operations so that the measured data is stored in the statistical data storing means to undergo the at least one statistical process and is stored in the measured data storing means only when the user has set the setting means to store the measured data; and

    update means for calculating new statistical data by employing newly obtained measured data and statistical data stored in the statistical data storing means when measured data is output by the measurement means, and updating the statistical data in the statistical data storing means by employing the calculated new statistical data.

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