Methods for calculating working time and working time calculation systems.

Abstract

The invention relates to a method for calculating working time, comprising acquisition, tracking, and computation processes. In the computation process, the first computation process is performed when there is a second object corresponding to the first among the second objects, and when the number of second objects corresponding to the first is equal to one. In the computation process, the second computation process is performed when there is a second object corresponding to the first among the second objects, and when the number of second objects corresponding to the first is greater than or equal to two. In the computation process, when none of the second objects correspond to the first, the third computation process is performed.

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