Electrocardiographic data detection apparatus and method

1 . An electrocardiogram apparatus, comprising:

multiple electrodes disposed to face a human body;

a processor; and

a memory storing one or more programs, which when executed, cause the processor to:

generate multiple difference signals from multiple sets of the multiple electrodes that are each a set of two electrodes of the multiple electrodes, each of the multiple difference signals being generated from signals of the two electrodes of the multiple electrodes;

select a first difference signal optimum for measurement of a heartbeat among the generated multiple difference signals;

identify, from the multiple electrodes, a pair of first electrodes that output original signals of the first difference signal;

select a second difference signal optimum for measurement of the heartbeat among the multiple difference signals generated from signals of remaining multiple electrodes in which the pair of first electrodes are excluded; and

cause the multiple electrodes to measure the heartbeat using the second difference signal.

2 . The electrocardiogram apparatus according to claim 1 , wherein

the one or more programs, when executed, cause the processor to:

select a third difference signal that is optimum for measurement of the heartbeat from among the multiple difference signals generated from signals of the multiple electrodes remaining by excluding, from the multiple electrodes, the pair of the first electrodes that output the original signals of the first difference signal and a pair of second electrodes that output original signals of the second difference signal; and

cause the multiple electrodes to measure the heartbeat using the third difference signal.

3 . The electrocardiogram apparatus according to claim 1 , wherein

the one or more programs, when executed, cause the processor to:

select a third difference signal that is optimum for measurement of the heartbeat from among the multiple difference signals remaining by excluding, from the generated multiple difference signals, the difference signal obtained from the two electrodes among the four electrodes that are

the pair of the first electrodes that output the original signals of the first difference signal, and

a pair of second electrodes that output original signals of the second difference signal; and

cause the multiple electrodes to measure the heartbeat using the third difference signal.

4 . The electrocardiographic data detection apparatus according to claim 1 , wherein

the difference signals that are suitable for measurement of the heartbeat are evaluated in accordance with signal-to-noise ratios.

5 . The electrocardiographic data detection apparatus according to claim 1 , wherein

the first difference signal that is optimum for measurement of the heartbeat is a difference signal having highest signal-to-noise ratio among the generated multiple difference signals.

6 . The electrocardiographic data detection apparatus according to claim 1 , wherein

the second difference signal that is optimum for measurement of the heartbeat is a difference signal having highest signal-to-noise ratio among the multiple difference signals generated from signals of the multiple electrodes remaining by excluding, from the multiple electrodes, the pair of the first electrodes that output the original signals of the first difference signal.

7 . The electrocardiographic data detection apparatus according to claim 2 , wherein

the third difference signal that is optimum for measurement of the heartbeat is a difference signal having highest signal-to-noise ratio among the multiple difference signals generated from signals of the remaining multiple electrodes.

8 . The electrocardiographic data detection apparatus according to claim 3 , wherein

the third difference signal that is optimum for measurement of the heartbeat is a difference signal having highest signal-to-noise ratio among the remaining multiple difference signals.

9 . The electrocardiographic action apparatus according to claim 1 , wherein

the multiple electrodes are at least five electrodes.

10 . The electrocardiographic action apparatus according to claim 2 , wherein

the multiple electrodes are at least seven electrodes.

11 . An electrocardiogram method, comprising:

(a) using an electrocardiogram apparatus that includes

multiple electrodes disposed to face a human body,

a processor, and

a memory storing one or more programs, which when executed, cause the processor to:

generate multiple difference signals from multiple sets of the multiple electrodes that are each a set of two electrodes of the multiple electrodes, each of the multiple difference signals being generated from signals of the two electrodes of the multiple electrodes, and

(b) selecting a first difference signal, by the processor, the first difference signal being optimum for measurement of a heartbeat among the generated multiple difference signals,

identifying, from the multiple electrodes, a pair of first electrodes that output original signals of the first difference signal,

selecting a second difference signal, by the processor, the second difference signal being optimum for measurement of the heartbeat among the multiple difference signals generated from signals of remaining multiple electrodes in which the pair of first electrodes are excluded, and

(c) causing the multiple electrodes to measure the heartbeat using the second difference signal.