System including management apparatus and electronic device connected to cord reel

1. A system including an electronic device connected to a cord that can be unreeled and reeled in by a cord reel, and a management apparatus configured to communicate with the electronic device, the system comprising:

a cord-reel-use detector configured to detect use of the cord reel;

at least one memory disposed in at least one of the electronic device and the management apparatus, the at least one memory configured to store an amount of the use of the cord reel; and

at least one controller, disposed in at least one of the electronic device and the management apparatus, and configured to determine the use of the cord reel based on detection made by the cord-reel-use detector, change the amount of the use of the cord reel in response to the electronic device being replaced with another electronic device or in response to the cord reel being replaced with another cord reel, and reduce the amount of the use of the cord reel when the cord reel has been replaced with another cord reel.

2. The system according to claim 1 , wherein

the at least one memory includes a first memory disposed in the electronic device and a second memory disposed in the management apparatus,

the first memory is configured to correlate and store at least identification information of the electronic device and identification information of the cord reel, and

the second memory is configured to correlate and store at least identification information of the electronic device or positional information of the electronic device and the amount of the use of the cord reel.

3. The system according to claim 2 , wherein:

the electronic device further includes an identification information reader configured to read identification information of the cord reel;

the at least one controller includes a first controller disposed in the electronic device and a second controller disposed in the management apparatus;

the first controller is configured to

store the identification information of the cord reel read by the identification information reader in the first memory, and

transmit a first notification signal to the management apparatus when the identification information of the cord reel read by the identification information reader differs from the identification information of the cord reel stored in the first memory; and

the second controller is configured to reduce the amount of the use of the cord reel corresponding to the electronic device in response to reception of the first notification signal.

4. A system including an electronic device connected to a cord that can be unreeled and reeled in by a cord reel, and a management apparatus configured to communicate with the electronic device, the system comprising:

a cord-reel-use detector configured to detect use of the cord reel;

at least one memory disposed in the management apparatus, the at least one memory configured to correlate and to store an identification number of the electronic device, an amount of the use of the cord reel and positional information of the electronic device; and

at least one controller, disposed in at least one of the electronic device and the management apparatus, and configured to determine the use of the cord reel based on detection made by the cord-reel-use detector, and change the amount of the use of the cord reel in response to the electronic device being replaced with another electronic device or in response to the cord reel being replaced with another cord reel.

5. A system including an electronic device connected to a cord that can be unreeled and reeled in by a cord reel, and a management apparatus configured to communicate with the electronic device, the system comprising:

a cord-reel-use detector configured to detect use of the cord reel;

at least one memory disposed in at least one of the electronic device and the management apparatus, the at least one memory configured to store an amount of the use of the cord reel; and

at least one controller, disposed in at least one of the electronic device and the management apparatus, and configured to determine the use of the cord reel based on detection made by the cord-reel-use detector, change the amount of the use of the cord reel in response to the electronic device being replaced with another electronic device or in response to the cord reel being replaced with another cord reel, and, when the electronic device has been replaced with another electronic device, add up amounts of the use of the cord reel before and after the replacement.

6. The system according to claim 5 , wherein the controller is configured to reduce the amount of the use of the cord reel when the cord reel has been replaced with another cord reel.

7. The system according to claim 5 , wherein the controller is configured to reset the amount of the use of the cord reel to zero when the cord reel has been replaced with another cord reel.

8. The system according to claim 5 , wherein

the at least one memory includes a first memory disposed in the electronic device and a second memory disposed in the management apparatus,

the first memory is configured to correlate and store at least identification information of the electronic device and identification information of the cord reel, and

the second memory is configured to correlate and store at least identification information of the electronic device or positional information of the electronic device and the amount of the use of the cord reel.

9. The system according to claim 8 , wherein:

the electronic device further includes an identification information reader configured to read identification information of the cord reel;

the at least one controller includes a first controller disposed in the electronic device and a second controller disposed in the management apparatus;

the first controller is configured to

store the identification information of the cord reel read by the identification information reader in the first memory, and

transmit a first notification signal to the management apparatus when the identification information of the cord reel read by the identification information reader differs from the identification information of the cord reel stored in the first memory; and

the second controller is configured to reduce the amount of the use of the cord reel corresponding to the electronic device in response to reception of the first notification signal.

10. The system according to claim 5 , wherein

the at least one controller includes a first controller disposed in the electronic device and a second controller disposed in the management apparatus,

the first controller is configured to transmit a second notification signal to the management apparatus in response to each detection made by the cord-reel-use detector, and

the second controller is configured to increase the amount of the use of the cord reel in response to each reception of the second notification signal.

11. The system according to claim 5 , wherein the management apparatus is configured to connect to a plurality of electronic devices.

12. The system according to claim 5 , wherein

the cord-reel-use detector includes a sensor configured to detect the electronic device being set in or taken out of a cradle, and

the controller is configured to determine the use of the cord reel based on output of the sensor.

13. The system according to claim 5 , wherein

the cord-reel-use detector includes an acceleration sensor configured to detect movement of the electronic device or a microphone configured to pick up sounds produced when the cord reel rotates, and

the controller is configured to determine the use of the cord reel based on output of the acceleration sensor or the microphone.

14. The system according to claim 5 , comprising an output unit configured to output positional information of a plurality of the electronic devices and information indicating respective amounts of use of a plurality of the cord reels connected to the plurality of the electronic devices.