Electronic device, method of extracting data and program

摘要

A time interval setting unit sets a time interval that depends on the number of items of data stored by a storage unit. A storage processing unit stores the data in the storage unit at every time interval that is set by the time interval setting unit. The storage unit retains the data at the time interval that depends on data acquirement time. A data extraction unit extracts the data by the number of items of data that depends on the number of items of display data, from the items of data stored by the storage unit. When the time interval setting unit updates the time interval, it is not necessary to perform subsampling or compression on the data stored by the storage unit and the data can be retained at the time interval that depends on the data acquirement time with less processing load.

主权项

1. An electronic device comprising:
a data acquisition unit that acquires data periodically; a storage unit that stores at least one part of the items of data acquired by the data acquisition unit; a time interval setting unit that sets a time interval that depends on the number of items of data stored by the storage unit; a storage processing unit that stores the data in the storage unit at every time interval that is set by the time interval setting unit, among the items of data acquired by the data acquisition unit; and a data extraction unit that extracts the data as representative data by a predetermined number of items of data from the items of data stored by the storage unit.