Biological signal measurement system, biological information measurement apparatus, and biological information extraction algorithm changing method

A biological signal measurement system comprising:

• biological electrodes for detecting biological electric signals derived from a living body;
• and
• a biological signal measurement apparatus including:
• a first data generator generating first biological digital data by quantizing, based on a first sampling rate, a biological electrical signal detected by the biological electrodes,
• a second data generator generating second biological digital data by downsizing the first biological digital data to a data size corresponding to a second sampling rate which is lower than the first sampling rate,
• a third data generator generating first feature amount data extracted from the first biological digital data,
• a wireless transmitter transmitting in real time one of the second biological digital data and the first feature amount data to a portable terminal based on transmission data designation information that designates data to be transmitted;
• and
• an external device configured to receive at least one of the first biological digital data and the first feature amount data from the biological signal measurement apparatus,
• a transmission data designation information receiver receiving transmission data designation information that designates data to be transmitted by the wireless transmitter, and
• a transmission data selector selecting, based on the transmission data designation information, the data to be transmitted by the wireless transmitter,
• wherein the biological electrical signal is an electrocardiogram signal,
• the first feature amount data is data including at least an R-R interval of the electrocardiogram signal,
• the second data generator and the third data generator use, as input data, the first biological digital data generated by the first data generator, and output the second biological digital data and the first feature amount data, respectively, and the data selected by the data selector includes at least one of the second biological digital data and the first feature amount data, and
• the external device is configured to determine reliability of the R-R interval, and transmit to the wireless transmitter, transmission data designation information that designates the second biological digital data to be transmitted by the wireless transmitter when the reliability of the R-R interval is lower than a predetermined reference value, and transmission data designation information that designates the first feature amount data to be transmitted by the wireless transmitter when the reliability of the R-R interval is equal to or larger than the predetermined reference value.