Patent Document ID: 9566008
Application ID: 12878325
Patent Flag: 1

Claim One:
1. A biological signal processing apparatus comprising: a calculation controller which controls a process of generating an alarm, and which comprises: a provider which provides state probability based upon one of: a state probability table in which the state probability corresponds to, in advance, a value of a first biological signal; and a calculation based on a deemed continuous value based on a measured first biological signal; an acquirer which acquires a first biological signal in time series from a living body, and which acquires, from the provider, state probability in time series that corresponds to a value of the acquired first biological signal in time series; and a determiner which calculates, by using a recurrence expression, present determination probability based on: present state probability acquired by the acquirer; and past determination probability, and which performs a determination whether a process is performed or not using the present determination probability, wherein the calculation controller determines whether the alarm is currently on or not, when it is determined that the alarm is not currently on, (i) the determiner compares the calculated present determination probability with a first threshold to determine whether a process of generating an alarm is performed or not, and (ii) when the determiner determines to generate the alarm, the calculation controller initiates generation of the alarm and an alarm generation flag is set; and when it is determined that the alarm is currently on, (i) the determiner compares the calculated present determination probability with a second threshold to determine whether a process of stopping the alarm is performed or not, and (ii) when the determiner determines to stop the alarm, the calculation controller initiates stoppage of the alarm and the alarm generation flag is reset.