Patent ID: 8599996
Filing Date: 2013-12-03
Classification: H03K

Abstract:
1. A counting device counting signals wherein there is a linear relationship between a specific physical quantity and the number of signals and wherein the signal has essentially a single frequency when the specific physical quantity is constant, comprising: a binarizing device binarizing an inputted signal; a signal counter counting a number of run lengths of the binarized signal outputted from the binarizing device during a prescribed counting interval; a run length measuring device measuring the run lengths of a binarized signal during the counting interval each time a run length worth of a signal is inputted; a frequency distribution generator generating a frequency distribution for the run lengths of the binarized signals during the counting interval, from the measurement results by the run length measuring device, for first run lengths, which are from a rising edge until the subsequent falling edge of the binarized signal, and second run lengths, which are from a falling edge to the subsequent rising edge of the binarized signal; a representative value calculator calculating a representative value T a corrected value calculator calculating a total Ns