Electronic device

Abstract

An electronic device having an attachment part that attaches/detaches the electronic device to/from a predetermined member; a physical quantity sensor detecting a physical quantity affecting the predetermined member according to a movement of a human body; and a communication unit configured to communicate with an external device and transmit the physical quantity detected by the physical quantity sensor to the external device.

What is claimed is: 
     
         1 . An electronic device comprising:
 an attachment part that attaches/detaches the electronic device to/from a predetermined member;   a physical quantity sensor detecting a physical quantity affecting the predetermined member according to a movement of a human body; and   a communication unit configured to communicate with an external device and transmit the physical quantity detected by the physical quantity sensor to the external device.   
     
     
         2 . The electronic device according to  claim 1 , wherein
 when the physical quantity sensor outputs a predetermined output, the communication unit transmits the physical quantity including the predetermined output.   
     
     
         3 . The electronic device according to  claim 1 , wherein
 the physical quantity sensor includes at least one of an acceleration sensor and an angular velocity sensor.   
     
     
         4 . The electronic device according to  claim 1 , further comprising:
 a controller configured to control a detection timing of the physical quantity sensor, wherein   the controller causes the physical quantity sensor to start detecting the physical quantity after communication between the communication unit and the external device is established.   
     
     
         5 . The electronic device according to  claim 1 , further comprising:
 a biosensor configured to detect biological information of the human body.   
     
     
         6 . The electronic device according to  claim 5 , wherein
 the communication unit includes a first electrode that is in contact with or faces the human body, and   the biosensor includes a second electrode that is in contact with or faces the human body.   
     
     
         7 . The electronic device according to  claim 6 , wherein
 a part of the first electrode is shared with a part of the second electrode.   
     
     
         8 . The electronic device according to  claim 5 , wherein
 the communication unit transmits the biological information together with the physical quantity to the external device.   
     
     
         9 . The electronic device according to  claim 1 , further comprising:
 a memory configured to store information on the predetermined member.   
     
     
         10 . The electronic device according to  claim 9 , wherein
 the communication unit transmits the information on the predetermined member together with the physical quantity to the external device.