Electronic device, charger, and electronic device charging system
First Claim
1. An electronic device that employs a secondary battery, which is rechargeable by a charger, as a power source and is capable of conducting a proximity noncontact communication with the charger, the electronic device comprising:
- a power receiving coil that receives an electric power from the charger;
an antenna used for conducting the proximity noncontact communication; and
wherein the secondary battery is charged with the received electric power; and
wherein the electronic device executes;
a first charging process of charging the secondary battery,then a first communicating process of conducting the proximity noncontact communication for a first variable communication time,then a second charging process of charging the secondary battery, andthen a second communicating process of conducting the proximity noncontact communication for a second variable communication time; and
wherein the first variable communication time is a first predetermined communication period when a voltage of the secondary battery is equal to or greater than a predetermined communication value, and is a second predetermined communication period which is shorter than the first predetermined communication period when the voltage of the secondary battery is smaller than the predetermined communication value, andwherein the second variable communication time is a third predetermined communication period when a voltage of the secondary battery is equal to or greater than the predetermined communication value, and is a fourth predetermined communication period which is shorter than the third predetermined communication period when the voltage of the secondary battery is smaller than the predetermined communication value.
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0 Petitions
Accused Products
Abstract
An object of the present invention is to provide an electronic device which is capable of conducting a proximity noncontact communication even if charging of a secondary battery is not fully completed and also whose secondary battery never falls into an overdischarge state during the proximity noncontact communication. An electronic device (2) employs a secondary battery (28), which is rechargeable by a charger (3) that gives a charge of electricity in a noncontact manner, as a power source, and is capable of conducting a proximity noncontact communication with the charger (3). The electronic device (2) repeats a charging process, in which this equipment charges the secondary battery (28) for a predetermined period (Tb1) by receiving a supply of an electric power from the charger (3) via a noncontact power-receiving secondary coil (22), and a communication process, in which this equipment conducts a data communication for a predetermined period (Ta1) when a voltage of the secondary battery (28) at a time of charging start is below a predetermined value (Va), and also repeats a charging process, in which this equipment charges the secondary battery (28) for a predetermined period (Tb2) by receiving a supply of the electric power from the charger (3) via the noncontact power-receiving secondary coil (22), and a communication process, in which this equipment conducts the data communication for a predetermined period (Ta2)(>Ta1) when the voltage of the secondary battery (28) at a time of charging start is more than a predetermined value (Va).
38 Citations
27 Claims
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1. An electronic device that employs a secondary battery, which is rechargeable by a charger, as a power source and is capable of conducting a proximity noncontact communication with the charger, the electronic device comprising:
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a power receiving coil that receives an electric power from the charger; an antenna used for conducting the proximity noncontact communication; and wherein the secondary battery is charged with the received electric power; and wherein the electronic device executes; a first charging process of charging the secondary battery, then a first communicating process of conducting the proximity noncontact communication for a first variable communication time, then a second charging process of charging the secondary battery, and then a second communicating process of conducting the proximity noncontact communication for a second variable communication time; and wherein the first variable communication time is a first predetermined communication period when a voltage of the secondary battery is equal to or greater than a predetermined communication value, and is a second predetermined communication period which is shorter than the first predetermined communication period when the voltage of the secondary battery is smaller than the predetermined communication value, and wherein the second variable communication time is a third predetermined communication period when a voltage of the secondary battery is equal to or greater than the predetermined communication value, and is a fourth predetermined communication period which is shorter than the third predetermined communication period when the voltage of the secondary battery is smaller than the predetermined communication value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 26)
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20. A process for controlling charging of a secondary battery by a charger, the secondary battery capable of serving as a power source for an electronic device, and proximity noncontact communication between the electronic device and the charger, the process comprising:
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a first charging process for charging the secondary battery, the first charging process including providing electric power to a power receiving coil; a first communicating process of conducting the proximity noncontact communication for a first variable communication time; a second charging process for charging the secondary battery, the second charging process including providing electric power to the power receiving coil; a second communicating process of conducting the proximity noncontact communication for a second variable time; and wherein the first variable communication time is a first predetermined communication period when a voltage of the secondary battery is equal to or greater than a predetermined communication value, and is a second predetermined communication period which is shorter than the first predetermined communication period when the voltage of the secondary battery is smaller than the predetermined communication value, and wherein the second variable communication time is a third predetermined communication period when a voltage of the secondary battery is equal to or greater than the predetermined communication value, and is a fourth predetermined communication period which is shorter than the third predetermined communication period when the voltage of the secondary battery is smaller than the predetermined communication value. - View Dependent Claims (21, 22, 23, 24, 25, 27)
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Specification