MOBILE DEVICE

• US 20140249763A1
• Filed: 04/07/2014
• Published: 09/04/2014
• Est. Priority Date: 10/11/2011
• Status: Active Grant

• Current Assignee: Murata Manufacturing Co Limited
• Original Assignee: Murata Manufacturing Co Limited
• Inventors: SHIMUTA, TORU
• Granted Patent: US 10,470,715 B2
• Time in Patent Office: Days
• US Class Current: 702/19
• CPC Class Codes: A61B 5/0245 by using sensing means generating electric signals, i.e. ECG signals
• CPC Class Codes: A61B 5/332 Portable devices specially adapted therefor
• CPC Class Codes: A61B 5/6898 Portable consumer electronic devices, e.g. music players, telephones, tablet computers
• CPC Class Codes: A61B 5/7207 of noise induced by motion artifacts

Abstract

A mobile device including a biosensor for obtaining biological signals in which biological information can be obtained stably while the mobile device is being held with a hand and is used, without providing a sensor specially used for detecting body motion generated by operating the mobile device.

Claims

1. A mobile device comprising:

a biosensor configured to detect a biological signal from a hand of a user holding the mobile device;

a user input configured to receive an input from the user; and

a processor configured to;

determine a timing of an operation based on the input received from the user;

determine whether a peak of the biological signal detected by the biosensor is body motion noise based on whether the peak is generated within a predetermined time period that includes the timing of the operation; and

calculate biological information based on the biological signal obtained by the biosensor and the determination of whether the peak of the biological signal is body motion noise.

2. The mobile device according to claim 1, wherein the processor is further configured to determine whether the hand that provides the user input is the same hand of which the biological signal is detected.

3. The mobile device according to claim 2, wherein, if the processor determines that the hand that provides the user input is the same hand of which the biological is detected, the processor determines that the peak of the biological signal is body motion noise.

4. The mobile device according to claim 2, wherein, if the processor determines that the hand that provides the user input is not the same hand of which the biological signal is detected, the processor determines that the peak of the biological signal is not body motion noise.

5. The mobile device according to claim 1, wherein the processor is further configured to specify when the operation begins and when the operation ends.

6. The mobile device according to claim 5, wherein the predetermined time period is one of a first time period that starts at a time point before the operation begins and stops when the operation begins and a second time period that starts when the operation ends and stops at a later time point after the operation ends.

7. The mobile device according to claim 1, wherein the user input is a touch panel configured to detect a touch operation.

8. The mobile device according to claim 7,

wherein the processor is further configured to specify at least one of a timing when a finger touches the touch panel and a timing when the finger is released from the touch panel, and

wherein the predetermined time period is one of a first time period starting from a time point before the finger touches the touch panel until when the finger touches the touch panel and a second time period when the finger has been released from the touch panel until a time point after the finger has been released from the touch panel.

9. The mobile device according to claim 8, further comprising:

a display configured to display a switch image, the display and the touch panel being superposed on each other,

wherein the processor is further configured to;

calculate, concerning a switch image displayed by the display means, a ratio of the number of times a touch operation has been determined to be body motion noise to the number of times a touch operation has been performed, and

change a position of the switch image to be displayed, on the basis of the calculated ratio.

10. The mobile device according to claim 1, wherein the biosensor is a sensor that obtains a biological signal having periodic peaks, and the predetermined period is set on the basis of a peak interval of a biological signal obtained by the biosensor.

11. A method of calculating biological information from a user of a mobile device the method comprising:

detecting, by a biosensor on the mobile device, a biological signal from a hand of the user;

receiving, by a user input on the mobile device, an input from the user;

determining, by a processor of the mobile device, a timing of an operation based on the input received from the user;

determining, by the processor, whether a peak of the biological signal detected by the biosensor is body motion noise based on whether the peak is generated within a predetermined time period that includes the timing of the operation; and

calculating, by the processor, biological information based on the biological signal obtained by the biosensor and the determination of whether the peak of the biological signal is body motion noise.

12. The method according to claim 11, further comprising determining, by the processor, whether the hand that provides the user input is the same hand of which the biological signal is detected.

13. The method according to claim 12, wherein, if the processor determines that the hand that provides the user input is the same hand of which the biological is detected, determining, by the processor, that the peak of the biological signal is body motion noise.

14. The method according to claim 12, wherein, if the processor determines that the hand that provides the user input is not the same hand of which the biological signal is detected, determining by the processor, that the peak of the biological signal is not body motion noise.

15. The method according to claim 11, further comprising, specifying, by the processor, when the operation begins and when the operation ends.

16. The method according to claim 15, wherein the predetermined time period is one of a first time period that starts at a time point before the operation begins and stops when the operation begins and a second time period that starts when the operation ends and stops at a later time point after the operation ends.

17. The method according to claim 11, wherein the user input is a touch panel configured to detect a touch operation.

18. The method according to claim 17, further comprising specifying, by the processor, at least one of a timing when a finger touches the touch panel and a timing when the finger is released from the touch panel,

wherein the predetermined time period is one of a first time period starting from a time point before the finger touches the touch panel until when the finger touches the touch panel and a second time period when the finger has been released from the touch panel until a time point after the finger has been released from the touch panel.

19. The method according to claim 18, further comprising:

displaying, on a display of the mobile device, a switch image, where the display and the touch panel are superposed on each other;

calculating, by the processor, a ratio of the number of times a touch operation has been determined to be body motion noise to the number of times a touch operation has been performed; and

changing, by the display, a position of the switch image to be displayed, on the basis of the calculated ratio.

20. The method according to claim 11, further comprising obtaining, by the biosensor, a biological signal having periodic peaks,

wherein the predetermined period is set on the basis of a peak interval of a biological signal obtained by the biosensor.