JP6866461B2 - Charging device, control method, and program - Google Patents

Description

The present invention relates to charging devices, control methods, and programs.

In recent years, portable information processing devices such as mobile phones having a non-contact communication function (hereinafter referred to as "portable information processing devices") have become widespread.

The portable information processing device and, for example, a reader / writer use a magnetic field (carrier wave) having a specific frequency such as 13.56 MHz for communication. Specifically, the reader / writer transmits a carrier wave on which a carrier wave signal is mounted, and a portable information processing device that receives the carrier wave with an antenna returns a response signal to the carrier wave signal received by load modulation, thereby causing the reader / writer. Is communicating with the portable information processing device.

In addition, various technologies have been developed for efficiently using electric power in information processing devices that perform non-contact communication. For example, in Patent Document 1, in an information processing device that communicates in a non-contact manner, the power supplied to the antenna coil before detecting another information processing device is used for information communication after the detection of the other information processing device. Reduce the power supplied to the antenna coil.

Japanese Unexamined Patent Publication No. 2001-339327

By the way, in an information processing device such as a mobile phone having a non-contact communication function, a technique for non-contact charging of a battery or the like is being proposed. Therefore, in the future, it is expected that there will be a demand for the information processing device to be equipped with a non-contact charging function in addition to the non-contact communication function.

However, when both the non-contact communication function and the non-contact charging function are mounted on the information processing device, an antenna for realizing both functions is required, but the performance required for each antenna is significantly different. Therefore, in order to realize both functions, the information processing device must be equipped with two antennas, one for non-contact charging and the other for non-contact communication. In an information processing device that requires miniaturization, it is not preferable to increase the number of large parts such as an antenna.

On the other hand, if one antenna is simply used in order to realize both the non-contact communication function and the non-contact charging function, the efficiency of non-contact charging deteriorates, or the data transmission efficiency deteriorates, or There is a problem that communication cannot be performed.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is that non-contact communication and non-contact charging can be efficiently performed by using one antenna. , To provide new and improved charging devices, control methods, and programs.

In order to solve the above problems, according to a certain aspect of the present invention, the external device is used for non-contact communication with an external device using a carrier wave of a predetermined frequency, and non-contact type using the carrier wave. An antenna with a variable Q value for charging the battery, a setting unit for setting the Q value of the antenna to a predetermined value, and a charge authentication transmitted from the external device to the external device. A response signal acquisition unit that acquires a response signal as information regarding charging of the battery that responds to information, and a charging continuation information acquisition unit that intermittently acquires charging continuation information transmitted from the external device at predetermined time intervals. When the response signal the response signal acquiring unit has acquired or on the basis of the said continuous charging information continuous charging information acquisition unit has acquired, and a determination unit which necessity of charging of the battery, The setting unit selectively sets the Q value of the antenna according to the result of the determination by the determination unit based on the response signal, and then starts transmission of charging power after the elapse of the predetermined time. A charging device is provided.

Further, in order to solve the above problems, according to another viewpoint of the present invention, in order to communicate with an external device in a non-contact manner using a carrier wave of a predetermined frequency, and in a non-contact manner using the carrier wave. Setting the Q value of the antenna having a variable Q value for charging the battery of the external device to a predetermined value, and charging authentication transmitted from the external device to the external device. Acquiring a response signal as information regarding charging of the battery in response to the information, intermittently acquiring charging continuation information transmitted from the external device at predetermined time intervals, and acquiring the response signal. Alternatively, the Q value of the antenna is determined according to the result of determining whether or not the battery needs to be charged based on the charging continuation information and determining whether or not the battery needs to be charged based on the response signal. after setting selectively the includes and to initiate the transmission of charging power after the elapse of the predetermined time, the control method is provided.

Further, in order to solve the above problems, according to another aspect of the present invention, the computer is used for non-contact communication with an external device using a carrier wave of a predetermined frequency, and is not using the carrier wave. Setting the Q value of an antenna having a variable Q value for contacting the battery of the external device to a predetermined value, and transmitting from the external device to the external device Acquiring a response signal as information regarding charging to the battery in response to the charging authentication information, and intermittently acquiring charging continuation information transmitted from the external device at predetermined time intervals, and acquired. The antenna is determined according to the result of determining whether or not the battery needs to be charged based on the response signal or the charging continuation information and determining whether or not the battery needs to be charged based on the response signal. A program for executing the control method is provided, which includes, after selectively setting the Q value of, the transmission of the power for charging is started after the elapse of the predetermined time.

As described above, according to the present invention, non-contact communication and non-contact charging can be efficiently performed by using one antenna.

It is explanatory drawing for demonstrating the information processing system which concerns on embodiment of this invention. It is explanatory drawing for demonstrating the information processing system which concerns on embodiment of this invention. It is a block diagram which shows the schematic structure of the information processing apparatus which concerns on this embodiment. It is a block diagram which shows the schematic structure of the charging device which concerns on this embodiment. It is a flowchart of communication / charge processing executed by the information processing apparatus of FIG. It is a flowchart of the communication / charging process executed by the charging device of FIG. It is a block diagram which shows the schematic structure of the information processing system which concerns on this embodiment, particularly the information processing apparatus. It is a block diagram which shows the schematic structure of the information processing system which concerns on this embodiment, particularly the charging apparatus. It is a circuit diagram which shows the modification of the antenna provided in the information processing apparatus and the charging apparatus which concerns on this embodiment. It is a flowchart of the 2nd communication / charge processing executed by the information processing apparatus which concerns on embodiment of this invention. FIG. 9 is a flowchart of a second communication / charging process executed by the information processing apparatus according to the embodiment of the present invention following FIG. It is a flowchart of the 2nd communication / charge processing executed by the charging apparatus which concerns on embodiment of this invention. FIG. 11 is a flowchart of a second communication / charging process executed by the charging device according to the embodiment of the present invention following FIG. It is a flowchart of the 3rd communication / charge processing executed by the information processing apparatus which concerns on embodiment of this invention. It is explanatory drawing for demonstrating the information processing system which concerns on 2nd Embodiment of this invention. It is explanatory drawing for demonstrating the information processing system which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the schematic structure of the reader / writer which concerns on the 2nd Embodiment of this invention. It is a flowchart of communication processing executed by a reader / writer which concerns on 2nd Embodiment of this invention. It is explanatory drawing for demonstrating the information processing system which concerns on 3rd Embodiment of this invention. It is explanatory drawing for demonstrating the information processing system which concerns on 3rd Embodiment of this invention. It is a block diagram which shows the schematic structure of the information processing apparatus which concerns on 3rd Embodiment of this invention. It is a block diagram which shows the schematic structure of the charging device which concerns on 3rd Embodiment of this invention. It is a flowchart of communication / charge processing executed by the information processing apparatus which concerns on 3rd Embodiment of this invention. FIG. 5 is a flowchart of communication / charging processing executed by the information processing apparatus according to the third embodiment of the present invention following FIG. It is a flowchart of the charging process executed by the charging device which concerns on 3rd Embodiment of this invention. It is explanatory drawing for demonstrating the information processing system which concerns on 4th Embodiment of this invention. It is explanatory drawing for demonstrating the information processing system which concerns on 4th Embodiment of this invention. It is a block diagram which shows the schematic structure of the information processing apparatus which concerns on 4th Embodiment of this invention. It is a flowchart of communication processing executed by the information processing apparatus which concerns on 4th Embodiment of this invention. It is explanatory drawing for demonstrating the information processing system which concerns on 5th Embodiment of this invention. It is explanatory drawing for demonstrating the information processing system which concerns on 5th Embodiment of this invention. It is a block diagram which shows the schematic structure of the information processing apparatus which concerns on 5th Embodiment of this invention. It is a flowchart of the charge process executed by the information processing apparatus which concerns on 5th Embodiment of this invention. (A) to (D) are explanatory views for explaining the structure of the charge authentication packet. (A) and (B) are explanatory views for explaining the structure of the charge authentication packet.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In the present specification and the drawings, components having substantially the same functional configuration are designated by the same reference numerals, so that duplicate description will be omitted.

The explanations will be given in the following order.

1. 1. Configuration of information processing system according to the embodiment of the present invention 2. 2. Schematic configuration of the information processing device according to the embodiment of the present invention. 2. Schematic configuration of the charging device according to the embodiment of the present invention. 5. Communication / charging process executed by the information processing device according to the embodiment of the present invention. 6. Communication / charging process executed by the charging device according to the embodiment of the present invention. 7. Specific configuration example of the information processing device according to the embodiment of the present invention. 8. Specific configuration example of the charging device according to the embodiment of the present invention. 2. Second communication / charging process executed by the information processing device according to the embodiment of the present invention. 2. Second communication / charging process executed by the charging device according to the embodiment of the present invention. 3. Third communication / charging process executed by the information processing device according to the embodiment of the present invention. Configuration of the information processing system according to the second embodiment of the present invention 12. Schematic configuration of a reader / writer according to a second embodiment of the present invention 13. Communication processing executed by the reader / writer according to the second embodiment of the present invention 14. Configuration of the information processing system according to the third embodiment of the present invention 15. Configuration of the information processing device according to the third embodiment of the present invention 16. Configuration of the charging device according to the third embodiment of the present invention 17. Communication / charging processing executed by the information processing device according to the third embodiment of the present invention 18. 1. Charging process executed by the charging device according to the third embodiment of the present invention. Configuration of the information processing system according to the fourth embodiment of the present invention 20. Configuration of the information processing device according to the fourth embodiment of the present invention 21. Communication processing executed by the information processing apparatus according to the fourth embodiment of the present invention 22. Configuration of the information processing system according to the fifth embodiment of the present invention 23. Configuration of the information processing device according to the fifth embodiment of the present invention 24. Charging process executed by the information processing device according to the fifth embodiment of the present invention.

[Structure of Information Processing System According to Embodiment of the Present Invention]
First, the information processing system according to the embodiment of the present invention will be described with reference to FIGS. 1A and 1B.

1A and 1B are explanatory views for explaining the information processing system according to the present embodiment.

In FIG. 1A, the information processing system 100 includes an information processing device 200 such as a mobile phone terminal and a charging device 300. The charging device 300 may be a charging device having a reader / writer function.

The information processing device 200 includes a battery (not shown) inside, and is equipped with one antenna 202 used when communicating with the charging device 300 and when transmitting electric power for charging the battery.

The charging device 300 includes one antenna 302 used when communicating with the information processing device 200 and when transmitting electric power for charging the battery included in the information processing device 200.

In the information processing system 100, as shown in FIG. 1B, non-contact communication is performed when the information processing device 200 is placed on the charging device 300 or when the information processing device 200 approaches the charging device 300. And the battery included in the information processing apparatus 200 is non-contactly charged.
Hereinafter, non-contact communication is referred to as non-contact communication, and non-contact charging is referred to as non-contact charging.

By the way, the information processing device 200 and the charging device 300 in the above-mentioned information processing system have a non-contact charging function in addition to the non-contact communication function.

Conventionally, in the non-contact charging method, the one that has been most practically used is the electromagnetic induction type, which uses the coupling between coils. In the electromagnetic induction type, the frequency of the carrier wave is generally about several hundred kHz due to the influence of the number of turns required for the coil. On the other hand, in non-contact communication represented by ISO18092 or the like, communication is performed by coupling resonated coils, and the frequency of the carrier wave is generally 13.56 MHz. When both the electromagnetic induction type non-contact charging function and the non-contact communication function such as ISO18092 are mounted on the information processing device 200 or the charging device 300, an antenna for realizing both functions is required.

However, since the performance and carrier frequency required for each antenna are significantly different, in order to realize both functions, the information processing device 200 and the charging device 300 are used for non-contact charging and non-contact communication. Must have two antennas.

On the other hand, there is a magnetic resonance type as a relatively new non-contact charging method. In this magnetic resonance type, antennas having a very high Q value are coupled to perform power transmission, and it is considered that a carrier frequency of about several tens of MHz is suitable. If the carrier frequency of 13.56 MHz in non-contact communication represented by ISO18092 is used, it is considered possible to use one antenna for non-contact charging and non-contact communication.

However, a magnetic resonance type non-contact charging antenna is required to have a very high Q value of several hundred to 1000 in order to improve charging efficiency. On the other hand, in the ISO18092 antenna, an antenna having a Q value suppressed to about 10 to 20 is often used for data transmission. Therefore, if the same antenna is simply used, there is a problem that the efficiency of non-contact charging deteriorates, the data transmission efficiency deteriorates, or communication cannot be performed.

Therefore, in the conventional technology, the information processing device 200 and the charging device 300 cannot efficiently perform non-contact communication and non-contact charging by using one antenna.

In the information processing system 100 according to the present embodiment, the information processing device 200 executes the communication / charging process of FIG. 4 described later, and the charging device 300 executes the communication / charging process of FIG. 5 described later. Further, in the information processing system 100 according to the present embodiment, the information processing device 200 executes the second communication / charging process of FIGS. 9 and 10 described later, and the charging device 300 executes the second communication / charging process of FIGS. 9 and 10, which will be described later. Execute the second communication / charging process. As a result, in both devices, one antenna is used to efficiently perform non-contact communication between the information processing device 200 and the charging device 300 and non-contact charging of the battery included in the information processing device 200. be able to.

[Summary Configuration of Information Processing Device According to the Embodiment of the Present Invention]
Next, the information processing apparatus according to the present embodiment will be described with reference to FIG.

FIG. 2 is a block diagram showing a schematic configuration of an information processing apparatus according to the present embodiment.

In FIG. 2, the information processing device 200 includes an antenna 202, a Q value setting switch 204, a charging unit 206, a communication unit 212, a control unit 218, a charging IC 220, and a battery 222.

The antenna 202 is a packet for confirming the other party of power transmission and authentication with the other party (hereinafter, referred to as “charge authentication packet”) transmitted from the charging device 300, or a normal non-contact communication packet (hereinafter, simply Receives "communication packets"). Further, the antenna 202 transmits electric power for charging from the charging device 300 to the battery 222.

The Q value setting switch 204 selectively sets the Q value of the antenna 202 based on the setting signal transmitted from the control unit 218. Specifically, the Q value setting switch 204 selectively sets the Q value of the antenna 202 so that the Q value of the antenna 202 becomes a low Q value or a high Q value.

The charging unit 206 has a receiving unit 208 that receives the electric power for charging the battery 222 transmitted to the antenna 202. Further, the charging unit 206 intermittently requests the charging device 300 to continue transmitting the charging power until the charging of the battery 222 is completed (hereinafter, referred to as a “charging continuation packet”). It has a transmission unit 210 for transmission. The transmission unit 210 transmits the charge continuation packet by load modulation, and also performs the transmission at a data transmission rate lower than the normal data transmission rate.

The communication unit 212 has a reception unit 214 that receives the charge authentication packet and the communication packet received by the antenna 202. Further, the communication unit 212 is for communication in response to a charge authentication response packet that responds to the charge authentication packet received by the reception unit 214 when the battery 222 needs to be charged, or in response to the received communication packet. It has a transmission unit 216 that transmits a response packet to the charging device 300. The transmission unit 216 transmits each response packet by load modulation and at a normal data transmission rate.

The control unit 218 controls the Q value setting switch 204, the charging unit 206, the communication unit 212, and the charging IC 220. After the power of the information processing apparatus 200 is turned on, the control unit 218 transmits a setting signal for setting the Q value of the antenna 202 to a low Q value to the Q value setting switch 204. That is, the control unit 218 sets the Q value of the antenna 202 to the first value so that data transmission can be performed efficiently. Further, when the receiving unit 214 receives the charge authentication packet, the control unit 218 acquires the battery remaining amount information of the battery 222 from the charging IC 220 and determines whether or not the battery 222 needs to be charged. When the battery 222 needs to be charged, the control unit 218 causes the transmission unit 216 to transmit a response packet for charge authentication. After that, the control unit 218 transmits a setting signal for setting the Q value of the antenna 202 to a high Q value to the Q value setting switch 204. That is, the control unit 218 sets the Q value of the antenna 202 to a second value higher than the first value so that the electric power for charging to the battery 222 can be efficiently transmitted. Further, in the control unit 218, when the receiving unit 208 receives the electric power for charging the battery 222 and the charging IC 220 receives the electric power for charging the battery 222 from the receiving unit 208, the charging IC 220 receives the electric power for charging the battery 222. To charge the battery. Then, the control unit 218 acquires the battery remaining amount information of the battery 222 from the charging IC 220 at predetermined time intervals while the battery 222 is being charged, and determines whether or not the battery 222 needs to be charged. When the battery 222 needs to be charged, the control unit 218 causes the transmission unit 210 to transmit a charge continuation packet. While the battery 222 needs to be charged in this way, the transmission unit 210 intermittently transmits a charge continuation packet to the charging device 300. On the other hand, when the battery 222 does not need to be charged, the control unit 218 does not cause the transmission unit 210 to transmit the charge continuation packet. Then, the control unit 218 determines whether or not the receiving unit 208 has received the electric power for charging the battery 222 after the elapse of a predetermined time. When the receiving unit 208 has not received the electric power for charging the battery 222, the control unit 218 transmits a setting signal for setting the Q value of the antenna 202 to a low Q value to the Q value setting switch 204. ..

The charging IC 220 charges the battery 222 and efficiently supplies the electric power from the battery 222 to each part of the information processing device 200.

[Summary configuration of the charging device according to the embodiment of the present invention]
Next, the charging device according to the present embodiment will be described with reference to FIG.

FIG. 3 is a block diagram showing a schematic configuration of a charging device according to the present embodiment.

In FIG. 3, the charging device 300 includes an antenna 302, a Q value setting switch 304, a charging unit 306, a communication unit 312, a control unit 318, and a power supply IC 320 connected to the AC power supply 322.

The antenna 302 transmits a charge authentication packet, and also transmits electric power for charging the battery 222 included in the information processing device 200. The antenna 302 may transmit a communication packet.

The Q value setting switch 304 selectively sets the Q value of the antenna 302 based on the setting signal transmitted from the control unit 318. Specifically, the Q value setting switch 304 selectively sets the Q value of the antenna 302 so that the Q value of the antenna 302 becomes a low Q value or a high Q value.

The charging unit 306 includes a receiving unit 308 that receives a charging continuation packet transmitted from the information processing device 200, and a transmitting unit 310 that transmits power for charging the battery 222 included in the information processing device 200.

The communication unit 312 includes a reception unit 314 that receives a charge authentication response packet transmitted from the information processing device, and a transmission unit 316 that transmits a charge authentication packet.

The control unit 318 controls the Q value setting switch 304, the charging unit 306, the communication unit 312, and the power supply IC 320. After the power of the charging device 300 is turned on, the control unit 318 transmits a setting signal for setting the Q value of the antenna 302 to a low Q value to the Q value setting switch 304.
That is, the control unit 318 sets the Q value of the antenna 302 to the first value so that data transmission can be performed efficiently. Further, the control unit 318 causes the transmission unit 316 to transmit a charge authentication packet. After that, when the receiving unit 314 receives the response packet for charging authentication, the control unit 318 determines whether or not the received response packet for charging authentication is valid. When the response packet for charge authentication is valid, the control unit 318 determines that the battery 222 included in the information processing device 200 needs to be charged, and sets the Q value of the antenna 302 to the Q value setting switch 304. A setting signal for setting a high Q value is transmitted. That is, the control unit 318 sets the Q value of the antenna 302 to a second value higher than the first value so that the electric power for charging to the battery 222 can be efficiently transmitted. Then, after a lapse of a predetermined time, the control unit 318 causes the transmission unit 310 to transmit electric power for charging the battery 222 included in the information processing device 200. After that, the control unit 318 determines whether or not the receiving unit 308 has received the charge continuation packet at predetermined time intervals. When the receiving unit 308 receives the charge continuation packet, the control unit 318 continues the power transmission by the transmitting unit 310. On the other hand, when the receiving unit 308 does not receive the charge continuation packet, the control unit 318 stops the power transmission by the transmitting unit 310 and sets the Q value of the antenna 302 to the Q value setting switch 304 to a low Q value. Send a setting signal to do so.

The power supply IC 320 efficiently supplies the electric power from the AC power supply 322 to each part of the charging device 300. The power supply IC 320 may supply electric power from a DC power source (not shown) to each part of the charging device 300.

[Communication / charging process executed by the information processing device according to the embodiment of the present invention]
Hereinafter, the communication / charging process executed by the information processing device of FIG. 2 will be described.

FIG. 4 is a flowchart of communication / charging processing executed by the information processing device of FIG.

In FIG. 4, first, the control unit 218 of the information processing apparatus 200 sets the Q value setting switch 204 to set the Q value of the antenna 202 to a low Q value, for example, 10 to 20 (an example of the first value). Send a signal. Upon receiving the setting signal, the Q value setting switch 204 sets the Q value of the antenna 202 to a low Q value (step S101).

Next, the control unit 218 waits for the carrier wave transmitted from the charging device 300 at the reception unit 214 of the communication unit 212 (step S102).

Next, the control unit 218 determines whether or not the carrier wave has been received by the receiving unit 214 (step S103), and if the carrier wave has not been received (NO in step S103), the process returns to the process of step S102.

When the receiving unit 214 receives the carrier wave (YES in step S103), it waits for the packet transmitted from the charging device 300 (step S104).

Next, the control unit 218 determines whether or not the packet has been received by the reception unit 214 (step S105), and if the packet has not been received (NO in step S105), the process returns to the process of step S104.

When the receiving unit 214 receives the packet (YES in step S105), the control unit 218 determines whether or not the received packet is a charging authentication packet (information on charging the battery, charging authentication information) (step). S106).

When the received packet is not a charge authentication packet (NO in step S106), the received packet is a communication packet, so the control unit 218 executes a normal communication process corresponding to the packet (step S108). ), Return to the process of step S104.

When the received packet is a charge authentication packet (YES in step S106), there is a charging device 300 having a non-contact charging function in the vicinity of the information processing device 200. The control unit 218 acquires the battery remaining amount information (information on charging the battery) of the battery 222 from the charging IC 220, and the battery 222 needs to be charged based on the acquired battery remaining amount information of the battery 222. Whether or not it is determined (step S107).

When the battery 222 does not need to be charged, that is, when the battery 222 is fully charged, or when the battery 222 is not connected to the information processing device 200 (NO in step S107), the control unit 218 is a communication unit. The process returns to the process of step S104 without causing the transmission unit 216 of 212 to transmit the response packet for charge authentication.

As a result of the determination in step S107, when the battery 222 needs to be charged (YES in step S107), the control unit 218 causes the transmission unit 216 to transmit a response packet for charge authentication (step S109).

Upon receiving the charge authentication response packet transmitted in step S109, the charging device 300 starts transmitting the charging power to the battery 222 of the information processing device 200 after a lapse of a predetermined time. Therefore, a setting signal for setting the Q value of the antenna 202 to a Q value higher than the Q value set in step S101, for example, 50 to several 100 (an example of the second value) is transmitted to the Q value setting switch 204. .. Upon receiving the setting signal, the Q value setting switch 204 sets the Q value of the antenna 202 to a high Q value (step S110).

Next, the control unit 218 monitors the charge to the battery 222 (step S111).

Next, the control unit 218 determines whether or not the receiving unit 208 of the charging unit 206 is receiving the electric power for charging the battery 222 (step S112).

When receiving power for charging (YES in step S112), the control unit 218 acquires the battery remaining amount information of the battery 222 from the charging IC 220, and whether or not the battery 222 needs to be charged. That is, it is determined whether or not the battery 222 is fully charged (step S114).

When the battery 222 needs to be charged (NO in step S114), the control unit 218 causes the transmission unit 210 of the charging unit 206 to transmit a charging continuation packet (step S115), and returns to the process of step S111. .. In step S115, the charge continuation packet is transmitted at a low data transmission rate that enables sufficient communication even if the Q value of the antenna 202 is high.

When the battery 222 does not need to be charged (YES in step S114), the control unit 218 returns to the process of step S111 without causing the transmission unit 210 of the charging unit 206 to transmit the charging continuation packet.

As a result of the determination in step S112, when the power for charging is not received, that is, when the transmission unit 210 of the charging unit 206 is not allowed to transmit the charging continuation packet, so that the power transmission from the charging device 300 is stopped. Or, when the information processing device 200 is taken out of the communicable range with the charging device 300 (NO in step S112), the control unit 218 sets the Q value of the antenna 202 to the Q value setting switch 204 to a low Q value. The Q value setting switch 204, which transmits a setting signal for setting to, and receives the setting signal, sets the Q value of the antenna 202 to a low Q value (step S113), and ends this process.

According to the communication / charging process of FIG. 4, when receiving a packet such as a charge authentication packet from the charging device 300, the Q value of the antenna 202 is set to a low Q value, and the charging device 300 charges the battery 222. When the power is transmitted, the Q value of the antenna is set to a high Q value. When the Q value of the antenna is low, the bandwidth is wide, so data transmission can be performed efficiently, and when the Q value of the antenna is high, the amplitude of the carrier wave can be increased, so that the power for charging can be transmitted. Can be efficiently performed, and thus non-contact communication and non-contact charging can be efficiently performed by using one antenna.

[Communication / charging process executed by the charging device according to the embodiment of the present invention]
Hereinafter, the communication / charging process executed by the charging device of FIG. 3 will be described.

FIG. 5 is a flowchart of a communication / charging process executed by the charging device of FIG.

In FIG. 5, first, the control unit 318 of the charging device 300 sets a setting signal for setting the Q value of the antenna 302 to the Q value setting switch 304 to a low Q value, for example, 10 to 20 (an example of the first value). To send. Upon receiving the setting signal, the Q value setting switch 304 sets the Q value of the antenna 302 to a low Q value (step S201).

Next, the control unit 318 causes the transmission unit 316 of the communication unit 312 to transmit a charge authentication packet (step S202).

Next, the control unit 318 determines whether or not the reception unit 314 of the communication unit 312 has received a response packet for charge authentication (information about charging the battery, a response signal) from the information processing device 200 (step S203). If the response packet for charge authentication is not received (NO in step S203), the process returns to step S202.

When the response packet for charge authentication is received (YES in step S203), the control unit 318 determines whether or not the received response packet for charge authentication is valid (step S204), and receives the received charge authentication. If the response packet for is not valid (NO in step S204), the process returns to the process of step S202.

When the received response packet for charge authentication is valid (YES in step S204), the Q value of the antenna 302 to the Q value setting switch 304 is higher than the Q value set in step S201, for example, 50 to several. A setting signal for setting to 100 (an example of the second value) is transmitted. Upon receiving the setting signal, the Q value setting switch 304 sets the Q value of the antenna 302 to a high Q value (step S205).

Next, the control unit 318 waits for a predetermined time (step S206), and then causes the transmission unit 310 of the charging unit 306 to transmit electric power for charging the battery 222 of the information processing device 200 (step S207).

Next, the control unit 318 has received the charging continuation packet (information on charging the battery, charging continuation information) transmitted from the information processing device 200 at the receiving unit 308 of the charging unit 306 at predetermined time intervals. (Step S208). When the charging continuation packet is received (YES in step S208), the charging of the battery 222 of the information processing device 200 is not completed, so the process returns to the process of step S207.

When the charging continuation packet is not received (NO in step S208), the charging of the battery 222 of the information processing device 200 is completed, or the information processing device 200 has been taken out of the communicable range with the charging device 300. , The control unit 318 stops the transmission of electric power by the transmission unit 310 of the charging unit 306 (step S209).

Next, the control unit 318 transmits a setting signal for setting the Q value of the antenna 302 to a low Q value to the Q value setting switch 304, and the Q value setting switch 304 receiving the setting signal sends the Q value of the antenna 302. Is set to a low Q value (step S210), and this process ends.

According to the communication / charging process of FIG. 5, when transmitting a packet such as a charge authentication packet, the Q value of the antenna 302 is set to a low Q value, and the power for charging the battery 222 of the information processing device 200 is set. Is set to a high Q value of the antenna when transmitting. Therefore, the same effect as the communication / charging process of FIG. 4 described above can be obtained.

[Specific Configuration Example of Information Processing Device According to the Embodiment of the Present Invention]
Next, a specific configuration example of the information processing apparatus 200 according to the present embodiment will be described.

FIG. 6 is a block diagram showing a schematic configuration of the information processing system 100, particularly the information processing apparatus 200, according to the present embodiment.

In FIG. 6, the information processing device 200 includes an antenna 202, a communication / charge control unit 203, a charging IC 220, a battery 222, an MPU 240, a ROM 242, a RAM 244, a recording medium 246, an input / output interface, and a 248. , The operation input device 252, the display device 254, and the communication interface 250 are provided. Further, the information processing apparatus 200 connects each component with, for example, a bus 256 as a data transmission path.

The antenna 202 includes a resonance circuit 224 that functions as an antenna and a Q value adjustment circuit 226 as the Q value setting switch 204 in FIG.

The resonance circuit 224 is composed of a coil (inductor) L1 having a predetermined inductance and a capacitor C1 having a predetermined capacitance, and generates an induced voltage by electromagnetic induction in response to reception of a carrier wave. Then, the resonance circuit 224 outputs the reception voltage obtained by resonating the induced voltage at a predetermined resonance frequency to the communication / charge control unit 203. Here, the resonance frequency in the resonance circuit 224 is set according to the frequency of the carrier wave, for example, 13.56 MHz. By having the resonance circuit 224, the antenna 202 receives the carrier wave and transmits the response signal by the load modulation performed in the load modulation unit 230 included in the communication / charge control unit 203.

The Q value adjusting circuit 226 serves to adjust the Q value of the antenna 202. Further, the Q value adjustment circuit 226 is controlled by a setting signal transmitted from the control unit 218 included in the communication / charge control unit 203, which will be described later. In FIG. 6, by connecting (activating) the resistor R1 of the Q value adjusting circuit 226, the Q value of the antenna 202 is adjusted to a low Q value, for example, 10 to 20 (an example of the first value). That is, when the resistor R1 of the Q value adjusting circuit 226 is not connected (enabled), the Q value of the antenna 202 is adjusted to a high Q value, for example, 50 to several 100 (an example of the second value). Here, in FIG. 6, the Q value adjusting circuit 226 connects (enables) the resistor R1 and the resistor R1 (load) according to the signal level (high level / low level) of the setting signal transmitted from the control unit 218. Although an example composed of the switching element SW1 is shown, the present invention is not limited to the above. For example, the Q value adjusting circuit 226 may be composed of a variable resistor (load) whose resistance value changes according to the magnitude of the transmitted setting signal (for example, a voltage signal). Further, the Q value adjusting circuit 226 selectively connects a plurality of resistors (resistors having different resistance values or resistors having the same resistance value) and the plurality of resistors (any one or a plurality of resistors). It can also be composed of a switching element (which connects). The switching element can be composed of, for example, one or two or more MOSFETs (for example, a p-channel MOSFET or an n-channel MOSFET) in which a setting signal is transmitted to a control terminal, but is limited to the above. Absent.

The communication / charge control unit 203 demodulates and processes the carrier wave signal based on the carrier wave received by the antenna 202, and transmits the response signal by load modulation. Further, the communication / charge control unit 203 receives the electric power for charging the battery 222 transmitted to the antenna 202, and causes the charging IC 220 to charge the battery 222.

The communication / charge control unit 203 includes a carrier detection unit 232, a detection unit 228, a regulator 234, a demodulation unit 236, a control unit 218, and a load modulation unit 230. The communication / charge control unit 203 may further include, for example, a protection circuit (not shown) for preventing an overvoltage or an overcurrent from being applied to the control unit 218. Here, examples of the protection circuit (not shown) include, but are not limited to, a clamp circuit composed of a diode or the like.

The carrier detection unit 232 generates, for example, a rectangular detection signal based on the reception voltage transmitted from the antenna 202, and transmits the detection signal to the control unit 218.

The detection unit 228 rectifies the reception voltage output from the antenna 202. Here, the detection unit 228 can be composed of, for example, a diode D1 and a capacitor C2, but is not limited to the above. Further, the regulator 234 smoothes the received voltage, makes it a constant voltage, and outputs the drive voltage to the control unit 218. Here, the regulator 234 can use the DC component of the received voltage as the drive voltage. Further, the regulator 234 outputs a voltage for charging the battery 222 to the charging IC 220.

The demodulation unit 236 demodulates the carrier wave signal based on the received voltage, and outputs data corresponding to the carrier wave signal included in the carrier wave (for example, a binarized data signal of high level and low level). Here, the demodulation unit 236 can output a data signal based on the AC component of the received voltage.

The control unit 218 drives the drive voltage output from the regulator 234 or the drive voltage supplied from the battery 222 as a power source, and performs various processing such as processing of data (data signal) demodulated by the demodulation unit 236. Here, the control unit 218 can be configured by, for example, an MPU or the like, but is not limited to the above.

More specifically, the control unit 218 includes, for example, an acquisition unit 260, a determination unit 262, a setting unit 264, and a transmission unit 266. The acquisition unit 260 includes a charge authentication information acquisition unit (not shown) as a reception unit 214 of the communication unit 212 in FIG. 2 and a battery remaining amount information acquisition unit (not shown). The transmission unit 266 includes a response signal transmission unit (not shown) as the transmission unit 216 of the communication unit 212 in FIG. 2 and a charging continuation information transmission unit (not shown) as the transmission unit 210 of the charging unit 206 in FIG. And.

The setting unit 264 sets the Q value of the antenna 202 to a low Q value, for example, 10 to 20 (an example of the first value) in the Q value adjusting circuit 226 after the power of the information processing device 200 is turned on. Send the setting signal. The charge authentication information acquisition unit of the acquisition unit 260 receives (acquires) a charge authentication packet. When the charge authentication information acquisition unit of the acquisition unit 260 receives the charge authentication packet, the battery remaining amount information acquisition unit of the acquisition unit 260 acquires the battery remaining amount information of the battery 222 from the charging IC 220. The determination unit 262 determines whether or not the battery 222 needs to be charged based on the battery remaining amount information of the battery 222 acquired by the acquisition unit 260. When the battery 222 needs to be charged, the response signal transmission unit of the transmission unit 266 controls the load modulation unit 230 to transmit a response packet for charge authentication to the charging device 300. After that, the setting unit 264 transmits a setting signal for setting the Q value of the antenna 202 to a high Q value, for example, 50 to several 100 (an example of the second value) to the Q value adjusting circuit 226. The control unit 218 causes the charging IC 220 to charge the battery 222 when the charging IC 220 receives the electric power for charging the battery 222. That is, the control unit 218 plays a role as a receiving unit 208 of the charging unit 206 in FIG. Then, the battery remaining amount information acquisition unit of the acquisition unit 260 acquires the battery remaining amount information of the battery 222 from the charging IC 220 at predetermined time intervals while the battery 222 is being charged. The determination unit 262 determines whether or not the battery 222 needs to be charged based on the battery remaining amount information of the battery 222 acquired by the acquisition unit 260. When the battery 222 needs to be charged, the charge continuation information transmission unit of the transmission unit 266 controls the load modulation unit 230 to transmit a charge continuation packet to the charging device 300. While the battery 222 needs to be charged in this way, the charge continuation information transmission unit of the transmission unit 266 controls the load modulation unit 230 to intermittently transmit the charge continuation packet to the charging device 300. On the other hand, when the battery 222 does not need to be charged, the charge continuation information transmission unit of the transmission unit 266 does not transmit the charge continuation packet to the charging device 300 without controlling the load modulation unit 230. Then, the control unit 218 determines whether or not the charging IC 220 has received the electric power for charging the battery 222 after the elapse of a predetermined time. When the charging IC 220 has not received the electric power for charging the battery 222, the setting unit 264 transmits a setting signal for setting the Q value of the antenna 202 to a low Q value to the Q value adjusting circuit 226.

The load modulation unit 230 includes, for example, a load Z and a switching element SW2, and performs load modulation by selectively connecting (activating) the load Z according to a control signal transmitted from the control unit 218. Here, the load Z is composed of, for example, a resistor having a predetermined resistance value, but is not limited to the above. Further, the switching element SW2 is composed of, for example, a p-channel type MOSFET or an n-channel type MOSFET, but is not limited to the above.

When the load modulation is performed in the load modulation unit 230, the impedance of the information processing device 200 as seen from the charging device 300 changes.

Since the communication / charge control unit 203 has the above configuration, when receiving a packet such as a charge authentication packet from the charging device 300, the Q value of the antenna 202 is set to a low Q value, and the charging device 300 sets the Q value to be low. When the power for charging the battery 222 is transmitted, the Q value of the antenna is set to a high Q value. When the Q value of the antenna is low, the bandwidth is wide, so data transmission can be performed efficiently, and when the Q value of the antenna is high, the amplitude of the carrier wave can be increased, so that the power for charging can be transmitted. Can be efficiently performed, and thus non-contact communication and non-contact charging can be efficiently performed by using one antenna.

The battery 222 is an internal power source included in the information processing device 200, and supplies a driving voltage to each part of the information processing device 200. In FIG. 6, for convenience of explanation, the voltage output from the battery 222 is supplied to the control unit 218 via the charging IC 220, but the present invention is not limited to the above. Here, examples of the battery 222 include, but are not limited to, a secondary battery such as a lithium-ion rechargeable battery. The charging IC 220 controls charging of the battery 222.

The MPU 240 functions as a control unit that controls the entire information processing apparatus 200. The ROM 242 stores control data such as programs and calculation parameters used by the MPU 240, and the RAM 244 primary stores the programs executed by the MPU 240.

The recording medium 246 functions as a storage unit in the information processing device 200, and stores, for example, various applications. Here, examples of the recording medium 246 include, but are not limited to, magnetic recording media such as hard disks and non-volatile memories such as EEPROM, flash memory, MRAM, FeRAM, and PRAM.

The input / output interface 248 connects, for example, an operation input device 252 and a display device 254. Here, examples of the input / output interface 248 include a USB (Universal Serial Bus) terminal, a DVI (Digital Visual Interface) terminal, an HDMI (registered trademark) (High-Definition Multimedia Interface) terminal, and the like. Not limited. Further, the operation input device 252 is provided on the information processing device 200, for example, a rotary selector such as a button, a direction key, or a jog dial, or a combination thereof, and is provided inside the information processing device 200 with an input / output interface 248. Be connected. Further, the display device 254 is also called, for example, an LCD (Liquid Crystal Display), an organic EL display (organic ElectroLuminescence display), or an OLED display (Organic Light Emitting Diode display).
) Etc., which is provided on the information processing device 200 and is connected to the input / output interface 248 inside the information processing device 200. Needless to say, the input / output interface 248 can also be connected to an operation input device (for example, a keyboard, a mouse, etc.) or a display device (for example, an external display, etc.) as an external device of the information processing device 200.

The communication interface 250 is a communication means included in the information processing device 200, and functions as a communication unit for wirelessly / wired communication with an external device such as a server (Server) via a network (or directly). .. Here, as the network, for example, a wired network such as LAN or WAN (Wide Area Network), wireless WAN (WWAN; Wireless Wide Area Network) via a base station, wireless MAN (WMAN; Wireless Metropolitan Area Network), etc. Examples thereof include a wireless network and the Internet using a communication protocol such as TCP / IP (Transmission Control Protocol / Internet Protocol), but the present invention is not limited to the above. Further, as the communication interface 250, for example, a communication antenna and an RF circuit (wireless communication), an IEEE802.5.1 port and a transmission / reception circuit (wireless communication), an IEEE802.11b port and a transmission / reception circuit (wireless communication), or a LAN ( Local Area Network) terminals and transmission / reception circuits (wired communication) are examples, but are not limited to the above. For example, the communication interface 250 can be configured to correspond to the above network.

[Specific configuration example of the charging device according to the embodiment of the present invention]
Next, a specific configuration example of the charging device 300 according to the present embodiment will be described.

FIG. 7 is a block diagram showing a schematic configuration of the information processing system 100, particularly the charging device 300, according to the present embodiment.

In FIG. 7, the charging device 300 includes a carrier wave signal generation unit 330, an antenna 302, a demodulation unit 328, and a control unit 318. The charging device 300 may include a rectifier circuit (not shown) between the antenna 302 and the demodulation unit 328.

Further, the charging device 300 is an interface (not shown) for connecting to a ROM (not shown), a RAM (not shown), a storage unit (not shown), an external device (not shown), another circuit, or the like. It may be provided with. The charging device 300 can connect each component by, for example, a bus as a data transmission path. The ROM stores programs, calculation parameters, and control data used by the control unit 318. The RAM primarily stores a program or the like executed by the control unit 318. The storage unit (not shown) stores applications, data, and the like used in the charging device 300. Here, examples of the storage unit (not shown) include a magnetic recording medium such as a hard disk and a nonvolatile memory such as a flash memory, but the present invention is limited to the above. I can't. Further, examples of the interface (not shown) include, but are not limited to, a UART (Universal Asynchronous Receiver Transmitter), a network terminal, and the like.

The carrier wave signal generation unit 330 is controlled by the control unit 318, and for example, receives a carrier wave signal generation command transmitted from the control unit 318 and generates a carrier wave signal in response to the carrier wave signal generation command. In FIG. 7, an AC power supply is shown as the carrier wave signal generation unit 330, but the carrier wave signal generation unit 330 is not limited to the above. For example, the carrier signal generation unit 330 may further include a modulation circuit (not shown) that performs ASK modulation. The carrier wave signal generated by the carrier wave signal generation unit 330 can include, for example, various processing instructions for the information processing apparatus 200 and data to be processed, but is not limited to the above.

The antenna 302 includes a resonance circuit 324 that functions as an antenna and a Q value adjustment circuit 326 as the Q value setting switch 304 in FIG. The antenna 302 transmits a carrier wave corresponding to the carrier wave signal generated by the carrier wave signal generation unit 330, and the antenna 302 receives a response signal from the information processing device 200.

Here, the resonance circuit 324 is composed of, for example, a coil (inductor) L3 having a predetermined inductance that functions as an antenna, and a capacitor C3 having a predetermined capacitance. Further, the resonance frequency of the resonance circuit is set according to the frequency of the carrier wave, for example, 13.56 MHz.

Further, the Q value adjusting circuit 326 is controlled by the control unit 318, and for example, adjusts the Q value of the antenna 302 according to the setting signal transmitted from the control unit 318. In FIG. 7, by connecting (activating) the resistor R3 of the Q value adjusting circuit 326, the Q value of the antenna 302 is adjusted to a low Q value, for example, 10 to 20 (an example of the first value). That is, when the resistor R3 of the Q value adjusting circuit 326 is not connected (enabled), the Q value of the antenna 302 is adjusted to a high Q value, for example, 50 to several 100 (an example of the second value). Here, FIG. 7 shows an example in which the Q value adjusting circuit 326 is composed of the resistor R3 and the switching element SW3, but the present invention is not limited to the above. For example, the Q value adjusting circuit 326 can have various configurations.

The demodulation unit 328 demodulates the response signal from the information processing device 200 by, for example, envelope detection of a change in voltage amplitude at the antenna end of the antenna 302 and binarizing the detected signal.

The control unit 318 is composed of, for example, an integrated circuit in which an MPU and various processing circuits are integrated, and controls the entire charging device 300 and performs various processing. Further, the control unit 318 includes an acquisition unit 340, a determination unit 342, a setting unit 344, and a transmission unit 346. The acquisition unit 340 includes a response signal acquisition unit (not shown) as a reception unit 314 of the communication unit 312 in FIG. 3 and a charging continuation information acquisition unit (not shown) as a reception unit 308 of the charging unit 306 in FIG. And. The transmission unit 346 includes a power transmission unit (not shown) as a transmission unit 310 of the charging unit 306 of FIG. 3 and a power transmission stop unit (not shown).

The setting unit 344 sets the Q value adjusting circuit 326 to set the Q value of the antenna 302 to a low Q value, for example, 10 to 20 (an example of the first value) after the power of the charging device 300 is turned on. Send a signal. The control unit 318 controls the carrier wave signal generation unit 330 to transmit a charge authentication packet. That is, the control unit 318 plays a role as a transmission unit 316 of the communication unit 312 in FIG. After that, when the response signal acquisition unit of the acquisition unit 340 receives the response packet for charge authentication, the control unit 318 determines whether or not the received response packet for charge authentication is valid. When the response packet for charge authentication is valid, the determination unit 342 determines that the battery 222 included in the information processing device 200 needs to be charged, and the setting unit 344 antennas the Q value adjustment circuit 326. A setting signal for setting the Q value of 302 to a high Q value, for example, 50 to several 100 (an example of the second value) is transmitted. Then, after a lapse of a predetermined time, the power transmission unit of the transmission unit 346 controls the carrier wave signal generation unit 330 to transmit power for charging the battery 222 included in the information processing device 200. After that, the control unit 318 determines whether or not the charge continuation information acquisition unit of the acquisition unit 340 has received the charge continuation packet at predetermined time intervals. When the charge continuation information acquisition unit of the acquisition unit 340 receives the charge continuation packet, the power transmission unit of the transmission unit 346 controls the carrier signal generation unit 330 to continue the transmission of the charging power. On the other hand, when the charge continuation information acquisition unit of the acquisition unit 340 does not receive the charge continuation packet, the power transmission stop unit of the transmission unit 346 controls the carrier signal generation unit 330 to stop the transmission of the power for charging. Let me. Then, the setting unit 344 transmits a setting signal for setting the Q value of the antenna 302 to a low Q value to the Q value adjusting circuit 326.

Since the charging device 300 has, for example, the above configuration, when transmitting a packet such as a charging authentication packet, the Q value of the antenna 302 is set to a low Q value, and the Q value of the information processing device 200 is set to the battery 222. When transmitting power for charging, the Q value of the antenna is set to a high Q value. When the Q value of the antenna is low, the bandwidth is wide, so data transmission can be performed efficiently, and when the Q value of the antenna is high, the amplitude of the carrier wave can be increased, so that the power for charging can be transmitted. Can be efficiently performed, and thus non-contact communication and non-contact charging can be efficiently performed by using one antenna.

The above-mentioned antennas 202 and 302 are composed of a resonance circuit having a coil and a capacitor and a Q value adjusting circuit having a resistor and a switching element. As shown in FIG. 8, the coil L4 and the capacitor C4 The antenna 402 may be composed of a resonance circuit having the above and a Q value adjusting circuit having a coil L5, a capacitor C5, and a switching element SW5 arranged in the vicinity of the resonance circuit. In this case, the Q value of the antenna 402 can be set to a higher Q value as compared with the antennas 202 and 302, so that the power can be transmitted more efficiently.

Although the information processing apparatus 200 has been described above as a component constituting the information processing system 100 according to the embodiment of the present invention, the embodiment of the present invention is not limited to such an embodiment. Embodiments of the present invention include, for example, a portable communication device having a reader / writer function (that is, a function of independently transmitting a carrier wave), a computer such as a PC (Personal Computer) having a reader / writer function, and the like. It can be applied to equipment.

Further, although the charging device 300 has been described as a component constituting the information processing system 100 according to the embodiment of the present invention, the embodiment of the present invention is not limited to such a mode. The embodiment of the present invention can be applied to various devices capable of non-contact communication with the information processing device 200, such as a charging device having a reader / writer function.

[Second communication / charging process executed by the information processing device]
Hereinafter, the second communication / charging process executed by the information processing apparatus 200 according to the embodiment of the present invention will be described. FIG. 9 is a flowchart of a second communication / charging process executed by the information processing device 200 according to the embodiment of the present invention. FIG. 10 is a flowchart of a second communication / charging process executed by the information processing apparatus 200 according to the embodiment of the present invention following FIG.

In FIG. 9, first, when the power of the information processing device 200 is turned on, the control unit 218 of the information processing device 200 sets the Q value of the antenna 202 to the Q value setting switch 204 to a low Q value, for example, 10 to 20 (first). Send a setting signal to set to (an example of the value of). Upon receiving the setting signal, the Q value setting switch 204 sets the Q value of the antenna 202 to a low Q value (step S301).

Next, the control unit 218 listens to, for example, a carrier wave of 13.56 MHz transmitted from the charging device 300 at the receiving unit 214 of the communication unit 212 (step S302).

Next, the control unit 218 determines whether or not the carrier wave has been received by the receiving unit 214 (step S303), and if the carrier wave has not been received (NO in step S303), the process returns to the process of step S302.

As a result of the determination in step S303, when the receiving unit 214 receives the carrier wave (YES in step S303), the control unit 218 waits for the request confirmation packet transmitted from the charging device 300 (step S304). If the reception of the carrier wave is interrupted during the standby of the request confirmation packet in step S304, the process returns to the process of step S302.

Next, the control unit 218 determines whether or not the request confirmation packet has been received by the reception unit 214 (step S305). For example, as shown in FIG. 29 (A), the request confirmation packet 10 transmitted from the charging device 300 having the non-contact communication function and the non-contact charging function includes the preamble 12, the data 14, and the charge authentication data. It is composed of charging function presence / absence confirmation data 16 and data 18.

As a result of the determination in step S305, when the receiving unit 214 receives the request confirmation packet (YES in step S305), the control unit 218 determines whether or not the charge authentication data included in the received request confirmation packet is valid. Discrimination (step S306).

As a result of the determination in step S306, when the charge authentication data is not valid (NO in step S306), it is a normal communication request. Therefore, the control unit 218 transmits the communication request packet to the charging device 300 in the transmission unit 216. (Step S307), the normal communication process with the charging device 300 is executed (step S308), and the process returns to the process of step S304.

As a result of the determination in step S306, when the charge authentication data is valid (YES in step S306), the control unit 218 acquires the battery remaining amount information of the battery 222 from the charging IC 220, and the remaining battery of the acquired battery 222. Based on the amount information, it is determined whether or not the remaining amount of the battery 222 is equal to or greater than the threshold value (step S309).

As a result of the determination in step S309, when the remaining amount of the battery 222 is equal to or higher than the threshold value (YES in step S309), the control unit 218 is set to the charging priority mode in which the information processing device 200 gives priority to charging over communication. Whether or not it is determined (step S310). The charge priority mode in step S310 may be set by the user, or the control unit 218 may determine the state of the information processing device 200 and set it.

As a result of the determination in step S310, if the charge priority mode is not set (NO in step S310), the process proceeds to step S307 in order to prioritize communication.

Control when the remaining amount of the battery 222 is not equal to or higher than the threshold value as a result of the determination in step S309 (NO in step S309) or when the charge priority mode is set as a result of the determination in step S310 (YES in step S310). The unit 218 transmits the charge authentication packet to the charging device 300 at the transmission unit 216 (step S311). For example, as shown in FIG. 29B, the charge authentication packet 20 transmitted by the information processing device 200 having the non-contact communication function and the non-contact charging function includes the preamble 22, the data 24, and the charge authentication data. It is composed of charging function presence / absence data 26 and data 28. Further, as shown in FIG. 29 (C), for example, the charge authentication packet 30 transmitted by the information processing device 800 of FIG. 24, which has only a non-contact communication function and will be described later, includes a preamble 32, data 34, and charge authentication. It is composed of charging function presence / absence data 36 as data and data 38. Further, as shown in FIG. 29 (D), for example, another charge authentication packet 40 transmitted by the information processing device 800 of FIG. 24, which has only a non-contact communication function and will be described later, includes the preamble 42 and the data 44. It is composed.

The charging device 300 that has received the charge authentication packet transmitted in step S311 starts transmitting the electric power for charging to the battery 222 of the information processing device 200 after a lapse of a predetermined time. Therefore, the control unit 218 sets the Q value of the antenna 202 to the Q value setting switch 204 to a Q value higher than the Q value set in step S301, for example, 50 to several 100 (an example of the second value). Send the setting signal. Upon receiving the set signal, the Q value setting switch 204 sets the Q value of the antenna 202 to a high Q value (step S312).

Next, the control unit 218 monitors the charge to the battery 222 (step S313).

Next, the control unit 218 determines whether or not the receiving unit 208 of the charging unit 206 is receiving the electric power for charging the battery 222 (step S314).

As a result of the determination in step S314, when the power for charging is received (YES in step S314), the control unit 218 acquires the battery remaining amount information of the battery 222 from the charging IC 220, and the battery 222 is fully charged. (Step S315).

As a result of the determination in step S315, when the battery is not fully charged (NO in step S315), the control unit 218 transmits the charging packet to the charging device 300 at the transmission unit 210 of the charging unit 206 (step S316). The process returns to step S313. In step S316, communication is performed at a low data transmission rate so that sufficient communication is possible even if the Q value of the antenna 202 is set to a high Q value.

As a result of the determination in step S315, when the battery is fully charged (YES in step S315), the control unit 218 does not transmit the charging packet to the charging device 300 at the transmitting unit 210 of the charging unit 206, but in step S313. Return to the processing of.

As a result of the determination in step S314, when the power for charging is not received, that is, because the control unit 218 did not transmit the charging packet in the transmission unit 210 of the charging unit 206, the power transmission from the charging device 300 is transmitted. When stopped, or when the information processing device 200 is taken out of the communicable range with the charging device 300 (NO in step S314), the control unit 218 sets the Q value of the antenna 202 to the Q value setting switch 204. A setting signal for setting a low Q value is transmitted, and the Q value setting switch 204 that has received the setting signal sets the Q value of the antenna 202 to a low Q value (step S317), and ends this process.

On the other hand, as a result of the determination in step S305, when the receiving unit 214 of the communication unit 212 does not receive the request confirmation packet (NO in step S305), the process proceeds to FIG. It is determined whether or not a predetermined time has elapsed from the standby (step S318).

As a result of the determination in step S318, when the predetermined time has not elapsed (NO in step S318), the process returns to the process of step S304 in FIG.

As a result of the determination in step S318, when a predetermined time has elapsed (YES in step S318), the control unit 218 is a charging device having only a non-contact charging function in the vicinity of the information processing device 200, for example, FIG. 19 described later. Assuming that the charging device 700 exists, the Q value of the antenna 202 is set to the Q value setting switch 204 to a Q value higher than the Q value set in step S301, for example, 50 to several 100 (an example of the second value). Send a setting signal to do so. Upon receiving the set signal, the Q value setting switch 204 sets the Q value of the antenna 202 to a high Q value (step S319).

Next, the control unit 218 waits for a charge authentication packet transmitted from, for example, the charging device 700 of FIG. 19 described later (step S320). In step S320, for example, the charging device 700 of FIG. 19, which will be described later, communicates at a low data transmission rate so that sufficient communication is possible even if the Q value of the antenna 202 is set to a high Q value.

Next, the control unit 218 determines whether or not the charging authentication packet has been received by the receiving unit 208 of the charging unit 206 (step S321). As shown in FIG. 30A, for example, the charge authentication packet 50 transmitted from the charging device 700 of FIG. 19 described later is composed of the preamble 52 and the charge authentication data 54.

As a result of the determination in step S321, when the receiving unit 208 receives the charge authentication packet (YES in step S321), the control unit 218 determines whether or not the received charge authentication packet is valid (step S322). ), If the charge authentication packet is not valid (NO in step S322), the process returns to step S320.

As a result of the determination in step S322, when the charge authentication packet is valid (YES in step S322), the control unit 218 sends the charge authentication packet to the transmission unit 210 of the charging unit 206, for example, the charging device 700 of FIG. (Step S323), and the process proceeds to step S313 of FIG. For example, as shown in FIG. 30B, the charge authentication packet 60 transmitted by the information processing apparatus 200 in step S323 is composed of the preamble 62 and the charge authentication reply data 64.

On the other hand, as a result of the determination in step S321, when the receiving unit 208 does not receive the charge authentication packet (NO in step S321), has the control unit 218 elapsed a predetermined time from waiting for the charge authentication packet in step S320? Whether or not it is determined (step S324).

As a result of the determination in step S324, when the predetermined time has not elapsed (NO in step S324), the process returns to the process of step S320.

As a result of the determination in step S324, when a predetermined time has elapsed (YES in step S324), the control unit 218 sets the Q value of the antenna 202 to the Q value setting switch 204 to a low Q value, for example, 10 to 20 (first). Send a setting signal to set to (an example of the value of). Upon receiving the set signal, the Q value setting switch 204 sets the Q value of the antenna 202 to a low Q value (step S325). Then, the process returns to the process of step S304 of FIG.

According to the second communication / charging process of FIGS. 9 and 10, when receiving a packet such as a request confirmation packet from the charging device 300, the Q value of the antenna 202 is set to a low Q value, and the charging device 300 sets the Q value to a low Q value. When the power for charging the battery 222 is transmitted, the Q value of the antenna is set to a high Q value. When the Q value of the antenna is low, the bandwidth is wide, so data transmission can be performed efficiently, and when the Q value of the antenna is high, the amplitude of the carrier wave can be increased, so that the power for charging can be transmitted. Can be efficiently performed, and thus non-contact communication and non-contact charging can be efficiently performed by using one antenna.

Further, even when the charging device 700 of FIG. 19, which will be described later, has only a non-contact charging function in the vicinity of the information processing device 200, the power for charging from the charging device 700 to the battery 222 is transmitted. Is set to a high Q value of the antenna. Therefore, even when the charging device 700 having only the non-contact charging function is present in the vicinity, the non-contact charging can be efficiently performed by using one antenna.

[Second communication / charging process performed by the charging device]
Next, a second communication / charging process executed by the charging device 300 according to the embodiment of the present invention will be described. FIG. 11 is a flowchart of a second communication / charging process executed by the charging device 300 according to the embodiment of the present invention. FIG. 12 is a flowchart of a second communication / charging process executed by the charging device 300 according to the embodiment of the present invention following FIG.

In FIG. 11, first, when the power of the charging device 300 is turned on, the control unit 318 of the charging device 300 sets the Q value of the antenna 302 to the Q value setting switch 304 to a low Q value, for example, 10 to 20 (first value). An example) is transmitted to set the setting signal. Upon receiving the set signal, the Q value setting switch 304 sets the Q value of the antenna 302 to a low Q value (step S401).

Next, the control unit 318 transmits a request confirmation packet as shown in FIG. 29 (A), for example, in the transmission unit 316 of the communication unit 312 (step S402).

Next, the control unit 318 determines whether or not the reply packet has been received by the reception unit 314 (step S403).

When the reply packet is received as a result of the determination in step S403 (YES in step S403), the control unit 318 determines whether the content of the reply packet is a communication request or a charge request (step S404).

As a result of the determination in step S404, when the content of the reply packet is a communication request (communication request in step S404), the control unit 318 determines whether or not the charging device 300 has a data transmission request (step S405). ), When there is no data transmission request (NO in step S405), the process returns to the process of step S402.

As a result of the determination in step S405, when there is a data transmission request (YES in step S405), the control unit 318 executes normal communication processing (step S406) and returns to the processing in step S402.

As a result of the determination in step S404, when the content of the reply packet is a charge request (charge request in step S404), the control unit 318 sets the Q value of the antenna 302 to the Q value setting switch 304 in step S401. A setting signal for setting a higher Q value, for example, 50 to several 100 (an example of a second value) is transmitted. Upon receiving the set signal, the Q value setting switch 304 sets the Q value of the antenna 302 to a high Q value (step S407).

Next, the control unit 318 waits for a predetermined time (step S408), and then transmits power for charging the battery 222 of the information processing device 200 to the transmission unit 310 of the charging unit 306 (step S409).

Next, the control unit 318 determines whether or not the receiving unit 308 of the charging unit 306 has received the charging packet transmitted from the information processing device 200 at predetermined time intervals (step S410).

As a result of the determination in step S410, when the charging packet is received (YES in step S410), the charging of the battery 222 of the information processing device 200 is not completed, so the process returns to the process of step S409.

As a result of the determination in step S410, when the charging packet is not received (NO in step S410), the charging of the battery 222 of the information processing device 200 is completed, or the information processing device 200 can communicate with the charging device 300. Since it has been taken out, the control unit 318 stops the transmission of the power for charging in the transmission unit 310 of the charging unit 306 (step S411).

Next, the control unit 318 transmits a setting signal for setting the Q value of the antenna 302 to a low Q value to the Q value setting switch 304, and the Q value setting switch 304 receiving the setting signal sends the Q value of the antenna 302. Is set to a low Q value (step S412), and this process ends.

On the other hand, if the reply packet is not received as a result of the determination in step S403 (NO in step S403), the process proceeds to FIG. Whether or not it is determined (step S413).

As a result of the determination in step S413, when the predetermined time has not elapsed (NO in step S413), the process returns to the process of step S403 in FIG.

As a result of the determination in step S413, when a predetermined time has elapsed (YES in step S413), the control unit 318 is an information processing device having only a non-contact charging function in the vicinity of the charging device 300, for example, FIG. 27 described later. Assuming that the information processing device 900 exists, the Q value of the antenna 302 is set to the Q value setting switch 304 to a Q value higher than the Q value set in step S401, for example, 50 to several 100 (an example of the second value). Send a setting signal for setting. Upon receiving the set signal, the Q value setting switch 304 sets the Q value of the antenna 302 to a high Q value (step S414).

Next, the control unit 318 transmits a charge authentication packet to the transmission unit 310 of the charging unit 306 (step S415). In step S415, the charging device 300 communicates at a low data transmission rate so that sufficient communication is possible even if the Q value of the antenna 302 is set to a high Q value.

Next, the control unit 318 determines whether or not the reply packet has been received by the reception unit 308 of the charging unit 306 (step S416).

As a result of the determination in step S416, when the reply packet is received (YES in step S416), the control unit 318 determines whether or not the received reply packet is valid (step S417), and the reply packet is valid. If not (NO in step S417), the process returns to step S416.

As a result of the determination in step S417, if the reply packet is valid (YES in step S417), the process proceeds to step S409 in FIG.

As a result of the determination in step S416, when the reply packet is not received (NO in step S416), the control unit 318 determines whether or not a predetermined time has elapsed from the transmission of the charge authentication packet in step S415 (step). S418).

As a result of the determination in step S418, when the predetermined time has not elapsed (NO in step S418), the process returns to the process of step S416.

As a result of the determination in step S418, when a predetermined time has elapsed (YES in step S418), the process returns to the process of step S401 in FIG.

According to the second communication / charging process of FIGS. 11 and 12, when transmitting a packet such as a request confirmation packet, the Q value of the antenna 302 is set to a low Q value and sent to the battery 222 of the information processing apparatus 200. When transmitting the power for charging, the Q value of the antenna is set to a high Q value. Therefore, the same effect as the second communication / charging process of FIGS. 9 and 10 described above can be obtained.

Further, even when the information processing device 900 of FIG. 27 has only a non-contact charging function in the vicinity of the charging device 300, for example, when transmitting the power for charging the battery 922 of the information processing device 900, the power is transmitted. The Q value of the antenna is set to a high Q value. Therefore, even when the information processing device 900 having only the non-contact charging function is present in the vicinity, the non-contact charging can be efficiently performed by using one antenna.

[Third communication / charging process executed by the information processing device]
Next, a third communication / charging process executed by the information processing apparatus 200 according to the embodiment of the present invention will be described. FIG. 13 is a flowchart of a third communication / charging process executed by the information processing device 200 according to the embodiment of the present invention. This process is executed when the power of the battery 222 is consumed so that the information processing device 200 cannot supply the power to the communication unit 212.

In FIG. 13, first, when the power of the battery 222 is consumed so that the information processing device 200 cannot supply power to the communication unit 212 and the power of the information processing device 200 is turned off (step S501), the control unit 218 , A setting signal for setting the Q value of the antenna 202 to a high Q value, for example, 50 to several 100 (an example of the second value) is transmitted to the Q value setting switch 204. Upon receiving the setting signal, the Q value setting switch 204 sets the Q value of the antenna 202 to a high Q value (step S502).

Next, when the receiving unit 208 of the charging unit 206 receives power from, for example, the charging device 300 or the charging device 700 of FIG. 19 described later, the charging unit 206 is activated by the received power (step S503).

Next, the control unit 218 waits for a charge authentication packet transmitted from, for example, the charging device 300 or the charging device 700 of FIG. 19 described later (step S504). In step S504, for example, the charging device 300 and the charging device 700 of FIG. 19 described later communicate at a low data transmission rate so that sufficient communication is possible even if the Q value of the antenna 202 is set to a high Q value. I do.

Next, the control unit 218 determines whether or not the charging authentication packet has been received by the receiving unit 208 of the charging unit 206 (step S505), and when the charging authentication packet has not been received (NO in step S505), The process returns to step S504.

As a result of the determination in step S505, when the receiving unit 208 receives the charge authentication packet (YES in step S505), the control unit 218 determines whether or not the received charge authentication packet is valid (step S506). ), If the charge authentication packet is not valid (NO in step S506), the process returns to step S504.

As a result of the determination in step S506, when the charge authentication packet is valid (YES in step S506), the control unit 218 sends the charge authentication packet to the transmission unit 210 of the charging unit 206, for example, the charging device 300 or FIG. 19 described later. (Step S507).

Next, the control unit 218 monitors the charge to the battery 222 (step S508).

Next, the control unit 218 determines whether or not the receiving unit 208 of the charging unit 206 is receiving the carrier wave (step S509).

As a result of the determination in step S509, when the receiving unit 208 of the charging unit 206 is receiving the carrier wave (YES in step S509), the control unit 218 is for charging the battery 222 at the receiving unit 208 of the charging unit 206. It is determined whether or not power is being received (step S510).

As a result of the determination in step S510, when the power for charging is received (YES in step S510), the control unit 218 acquires the battery remaining amount information of the battery 222 from the charging IC 220, and the battery 222 is fully charged. (Step S511).

As a result of the determination in step S511, when the battery is not fully charged (NO in step S511), the control unit 218 charges the charging packet in the transmission unit 210 of the charging unit 206, for example, the charging device 300 or FIG. 19 described later. It is transmitted to the apparatus 700 (step S512), and the process returns to the process of step S508. In step S512, communication is performed at a low data transmission rate so that sufficient communication is possible even if the Q value of the antenna 202 is set to a high Q value.

As a result of the determination in step S511, when the battery is fully charged (YES in step S511), the control unit 218 does not transmit the charging packet to the charging device 300 at the transmitting unit 210 of the charging unit 206, but in step S508. Return to the processing of.

As a result of the determination in step S510, when the charging power is not received, that is, because the control unit 218 did not transmit the charging packet in the transmitting unit 210 of the charging unit 206, the power transmission from the charging device 300 is transmitted. When stopped (NO in step S510), the control unit 218 transmits a setting signal for setting the Q value of the antenna 202 to a low Q value to the Q value setting switch 204, and receives the set signal. The setting switch 204 sets the Q value of the antenna 202 to a low Q value (step S513), and ends this process.

On the other hand, as a result of the determination in step S509, when the carrier wave is not received by the receiving unit 208 of the charging unit 206, that is, when the information processing device 200 is taken out of the communicable range with the charging device 300 (in step S509). NO), the control unit 218 acquires the battery remaining amount information of the battery 222 from the charging IC 220, and determines whether or not the remaining amount of the battery 222 is equal to or greater than the threshold value (step S514).

As a result of the determination in step S514, when the remaining amount of the battery 222 is equal to or greater than the threshold value (YES in step S514), the process proceeds to step S513.

As a result of the determination in step S514, when the remaining amount of the battery 222 is not equal to or more than the threshold value (NO in step S514), this process ends.

According to the third communication / charging process of FIG. 13, when the power of the battery 222 is consumed so that the information processing device 200 cannot supply power to the communication unit 212 and the power of the information processing device 200 is turned off. Since the Q value of the antenna 202 is set to a high Q value, non-contact charging can be efficiently performed even when the power of the information processing device 200 is turned off and non-contact communication cannot be performed.

[Structure of Information Processing System According to Second Embodiment of the Present Invention]
Hereinafter, the information processing system according to the second embodiment of the present invention will be described. 14A and 14B are explanatory views for explaining the information processing system according to the second embodiment of the present invention.

In FIG. 14A, the information processing system 110 includes the information processing device 200 of FIG. 2 described above and a reader / writer 500 having only a non-contact communication function.

The information processing device 200 has a battery (not shown) inside, and is equipped with one antenna 202 used for communication with the reader / writer 500.

The reader / writer 500 is equipped with one antenna 502 used when communicating with the information processing device 200.

In the information processing system 110, as shown in FIG. 14B, when the information processing device 200 is placed on the reader / writer 500, or when the information processing device 200 approaches the reader / writer 500, it is a non-contact type. Communicate.

In the information processing system 110 according to the present embodiment, the information processing device 200 executes the second communication / charging process of FIGS. 9 and 10 described above, and the reader / writer 500 executes the communication process of FIG. 16 described later. To do. Thereby, in both devices, non-contact communication between the information processing device 200 and the reader / writer 500 can be efficiently performed by using one antenna.

[Rough configuration of reader / writer according to the second embodiment of the present invention]
Next, the reader / writer according to the second embodiment of the present invention will be described. FIG. 15 is a block diagram showing a schematic configuration of a reader / writer 500 according to a second embodiment of the present invention.

In FIG. 15, the reader / writer 500 includes an antenna 502, a communication unit 512, a control unit 518, and a power supply IC 520 connected to the AC power supply 522.

The antenna 502 transmits a polling signal and a communication packet. The Q value of the antenna 502 is set to a low Q value. The communication unit 512 includes a reception unit 514 that receives a reply packet transmitted from the information processing device 200, and a transmission unit 516 that transmits a polling signal and a communication packet.

The control unit 518 controls the communication unit 512 and the power supply IC 520. The power supply IC 520 efficiently supplies power from the AC power supply 522 to each part of the reader / writer 500. The power supply IC 520 may supply power from a DC power supply (not shown) to each part of the reader / writer 500.

[Communication processing executed by the reader / writer according to the second embodiment of the present invention]
Next, the communication process executed by the reader / writer 500 according to the second embodiment of the present invention will be described. FIG. 16 is a flowchart of communication processing executed by the reader / writer 500 according to the second embodiment of the present invention.

In FIG. 16, first, when the power of the reader / writer 500 is turned on, the control unit 518 transmits a polling signal to the transmission unit 516 of the communication unit 512 (step S601).

Next, the control unit 518 determines whether or not the reply packet has been received by the reception unit 514 of the communication unit 512 (step S602).

As a result of the determination in step S602, if the reply packet is not received (NO in step S602), the process returns to the process of step S601.

As a result of the determination in step S602, when the reply packet is received (YES in step S602), the control unit 518 determines whether or not the received reply packet is valid (step S603).

If the reply packet is not valid as a result of the determination in step S603 (NO in step S603), the process returns to the process of step S601.

As a result of the determination in step S603, when the reply packet is valid (YES in step S603), the control unit 518 executes a normal non-contact communication process (step S604), and ends this process.

[Structure of Information Processing System According to Third Embodiment of the Present Invention]
Hereinafter, the information processing system according to the third embodiment of the present invention will be described. 17A and 17B are explanatory views for explaining the information processing system according to the third embodiment of the present invention.

In FIG. 17A, the information processing system 120 includes an information processing device 600 such as a mobile phone terminal and a charging device 700 having only a non-contact charging function.

The information processing device 600 includes a battery (not shown) inside, and is equipped with one antenna 602 used when transmitting electric power for charging the battery.

The charging device 700 is equipped with one antenna 702 used when transmitting electric power for charging to the battery included in the information processing device 600.

In the information processing system 120, as shown in FIG. 17B, the information processing device 600 includes the information processing device 600 when it is placed on the charging device 700 or when the information processing device 600 approaches the charging device 700. Non-contact charging of the battery.

In the information processing system 120 according to the present embodiment, the information processing device 600 executes the communication / charging process of FIGS. 20 and 21 described later, and the charging device 700 executes the charging process of FIG. 22 described later. Thereby, in both devices, non-contact charging between the information processing device 600 and the charging device 700 can be efficiently performed by using one antenna.

[Structure of Information Processing Device According to Third Embodiment of the Present Invention]
Next, the information processing apparatus 600 according to the third embodiment of the present invention will be described. FIG. 18 is a block diagram showing a schematic configuration of the information processing apparatus 600 according to the third embodiment of the present invention.

In FIG. 18, the information processing device 600 includes an antenna 602, a Q value setting switch 604, a charging unit 606, a communication unit 612, a control unit 618, a charging IC 620, a battery 622, a voltage detection circuit 624, and the like. It includes a limiting resistor 626 connected to a ground (GND) 628.

The antenna 602 receives the packet transmitted from the charging device 700. Further, the antenna 602 transmits electric power for charging from the charging device 700 to the battery 622.

The Q value setting switch 604 selectively sets the Q value of the antenna 602 based on the setting signal transmitted from the control unit 618. For example, the Q value setting switch 604 selectively sets the Q value of the antenna 602 so that the Q value of the antenna 602 becomes a low Q1 value, a low Q2 value, or a high Q value.

The charging unit 606 has a receiving unit 608 that receives the electric power for charging the battery 622 transmitted to the antenna 602. Further, the charging unit 606 has a transmitting unit 610 that intermittently transmits a charging packet for requesting the charging device 700 to continue transmitting the electric power for charging until the charging of the battery 622 is completed. The transmission unit 610 transmits the charging packet by load modulation, and also performs the transmission at a data transmission rate lower than the normal data transmission rate.

The communication unit 612 has a reception unit 614 that receives the packet received by the antenna 602. Further, the communication unit 612 has a transmission unit 616 for transmitting a response packet to the charging device 700. The transmission unit 616 transmits the response packet by load modulation and at a normal data transmission rate.

The control unit 618 controls the Q value setting switch 604, the charging unit 606, the communication unit 612, the charging IC 620, and the voltage detection circuit 624. The control unit 618 controls the connection between the antenna 602 and the limiting resistor 626 based on the control signal transmitted from the voltage detection circuit 624.

The charging IC 620 charges the battery 622 and efficiently supplies the electric power from the battery 622 to each part of the information processing apparatus 600.

The voltage detection circuit 624 detects the voltage input to the antenna 602 and transmits a control signal corresponding to the input voltage to the control unit 618. Then, the control unit 618 has a large voltage when charging the battery 622 to the antenna 602 when the Q value of the antenna 602 is set to a low Q1 value based on the control signal transmitted from the voltage detection circuit 624. Is input, a setting signal for setting the Q value of the antenna 602 to a low Q2 value is transmitted to the Q value setting switch 604.

The limiting resistor 626 prevents the communication unit 612 from being destroyed when a large voltage for charging the battery 622 is input to the antenna 602 when the Q value of the antenna 602 is set to a low Q1 value. It is for.

[Structure of a charging device according to a third embodiment of the present invention]
Next, the charging device according to the third embodiment of the present invention will be described. FIG. 19 is a block diagram showing a schematic configuration of a charging device according to a third embodiment of the present invention.

In FIG. 19, the charging device 700 includes an antenna 702, a charging unit 706, a control unit 718, and a power supply IC 720 connected to the AC power supply 722.

The antenna 702 transmits a charge authentication packet, and also transmits electric power for charging the battery 622 included in the information processing device 600. The Q value of the antenna 702 is set to a high Q value. The charging unit 706 includes a receiving unit 708 that receives a charging packet transmitted from the information processing device 600, and a transmitting unit 710 that transmits power for charging the battery 622 included in the information processing device 600.

The control unit 718 controls the charging unit 706 and the power supply IC 720. The power supply IC 720 efficiently supplies the electric power from the AC power supply 722 to each part of the charging device 700. The power supply IC 720 may supply electric power from a DC power source (not shown) to each part of the charging device 700.

[Communication / charging process executed by the information processing device according to the third embodiment of the present invention]
Next, the communication / charging process executed by the information processing apparatus 600 according to the third embodiment of the present invention will be described. FIG. 20 is a flowchart of communication / charging processing executed by the information processing device 600 according to the third embodiment of the present invention. FIG. 21 is a flowchart of communication / charging processing executed by the information processing apparatus 600 according to the third embodiment of the present invention following FIG. 20.

In FIG. 20, first, when the power of the information processing device 600 is turned on, the control unit 618 of the information processing device 600 sets the Q value of the antenna 602 to the Q value setting switch 604 to a low Q1 value, for example, 10 to 20 (first). Send a setting signal to set to (an example of the value of). Upon receiving the set signal, the Q value setting switch 604 sets the Q value of the antenna 602 to a low Q1 value (step S701).

Next, the control unit 618 listens for a carrier wave of, for example, 13.56 MHz transmitted from the charging device 700 at the reception unit 614 of the communication unit 612 (step S702).

Next, the control unit 618 determines whether or not the carrier wave has been received by the receiving unit 614 (step S703), and if the carrier wave has not been received (NO in step S703), the process returns to the process of step S702.

As a result of the determination in step S703, when the receiving unit 614 receives the carrier wave (YES in step S703), the control unit 618 has the voltage input to the antenna 602 based on the control signal transmitted from the voltage detection circuit 624. Is equal to or greater than the first threshold value (step S704). When a voltage equal to or higher than the first threshold value is input to the antenna 602 and the Q value of the antenna 602 is set to a low Q1 value by the Q value setting switch 604, the circuit of the communication unit 612 is destroyed. There is a risk of That is, the value of the first threshold value is set so that the circuit of the communication unit 612 is not destroyed.

As a result of the determination in step S704, when the voltage input to the antenna 602 is equal to or higher than the first threshold value (YES in step S704), the control unit 618 lowers the Q value of the antenna 602 to the Q value setting switch 604 Q2. A setting signal for setting a value, for example 10 to 20, is transmitted. Upon receiving the set signal, the Q value setting switch 604 sets the Q value of the antenna 602 to a low Q2 value (step S705). That is, in step S705, the antenna 602 and the limiting resistor 626 are connected.

Next, the control unit 618 determines whether or not the voltage input to the antenna 602 is equal to or higher than the second threshold value based on the control signal transmitted from the voltage detection circuit 624 (step S706).

As a result of the determination in step S706, when the voltage input to the antenna 602 is equal to or higher than the second threshold value (YES in step S706), the process of step S706 is repeated.

As a result of the determination in step S706, when the voltage input to the antenna 602 is not equal to or higher than the second threshold value (NO in step S706), the process returns to the process of step S701. That is, in the subsequent step S701, the connection between the antenna 602 and the limiting resistor 626 is cut off. The reason why different threshold values are used in step S704 and step S706 is that the second threshold value takes into consideration the voltage drop in the limiting resistor 626 from the first threshold value.

On the other hand, as a result of the determination in step S704, when the voltage input to the antenna 602 is not equal to or higher than the first threshold value (NO in step S704), the control unit 618 listens for the request confirmation packet transmitted from the outside (step S707). ). If the reception of the carrier wave is interrupted during the standby of the request confirmation packet in step S707, the process returns to the process of step S702.

Next, the control unit 618 determines whether or not the request confirmation packet has been received by the reception unit 614 (step S708).

As a result of the determination in step S708, when the receiving unit 614 receives the request confirmation packet (YES in step S708), the control unit 618 determines whether or not the charge authentication data included in the received request confirmation packet is valid. Determine (step S709).

As a result of the determination in step S709, when the charge authentication data is not valid (NO in step S709), it is a normal communication request. Therefore, the control unit 618 transmits the communication request packet to the outside in the transmission unit 616 (step). S710), a normal non-contact communication process with the outside is executed (step S711), and the process returns to the process of step S707.

As a result of the determination in step S709, when the charge authentication data is valid (YES in step S709), the control unit 618 acquires the battery remaining amount information of the battery 622 from the charging IC 620, and the remaining battery of the acquired battery 622. Based on the amount information, it is determined whether or not the remaining amount of the battery 622 is equal to or greater than the threshold value (step S712).

As a result of the determination in step S712, when the remaining amount of the battery 622 is equal to or higher than the threshold value (YES in step S712), the control unit 618 is set to the charging priority mode in which the information processing device 600 gives priority to charging over communication. Whether or not it is determined (step S713). The charge priority mode in step S713 may be set by the user, or the control unit 618 may determine the state of the information processing device 600 and set it.

As a result of the determination in step S713, when the charge priority mode is not set (NO in step S713), the process proceeds to step S710 in order to give priority to communication.

Control when the remaining amount of the battery 622 is not equal to or higher than the threshold value as a result of the determination in step S712 (NO in step S712) or when the charge priority mode is set as a result of the determination in step S713 (YES in step S713). The unit 618 transmits the charge authentication packet to the charging device 700 at the transmission unit 616 (step S714).

Upon receiving the charge authentication packet transmitted in step S714, the charging device 700 starts transmitting electric power for charging to the battery 622 of the information processing device 600 after a lapse of a predetermined time. Therefore, the control unit 618 sets the Q value of the antenna 602 to the Q value setting switch 604 to a Q value higher than the Q value set in step S701, for example, 50 to several 100 (an example of the second value). Send the setting signal. Upon receiving the set signal, the Q value setting switch 604 sets the Q value of the antenna 602 to a high Q value (step S715).

Next, the control unit 618 monitors the charge to the battery 622 (step S716).

Next, the control unit 618 determines whether or not the receiving unit 608 of the charging unit 606 is receiving the electric power for charging the battery 622 (step S717).

As a result of the determination in step S717, when the power for charging is received (YES in step S717), the control unit 618 acquires the battery remaining amount information of the battery 622 from the charging IC 620, and the battery 622 is fully charged. (Step S718).

As a result of the determination in step S718, when the battery is not fully charged (NO in step S718), the control unit 618 transmits the charging packet to the charging device 700 at the transmission unit 610 of the charging unit 606 (step S719). The process returns to the process of step S716. In step S719, communication is performed at a low data transmission rate so that sufficient communication is possible even if the Q value of the antenna 602 is set to a high Q value.

As a result of the determination in step S718, when the battery is fully charged (YES in step S718), the control unit 618 does not transmit the charging packet to the charging device 700 in the transmitting unit 610 of the charging unit 606, and in step S716. Return to the processing of.

As a result of the determination in step S717, when the power for charging is not received, that is, because the control unit 618 did not transmit the charging packet in the transmission unit 610 of the charging unit 606, the power transmission from the charging device 700 is transmitted. When stopped, or when the information processing device 600 is taken out of the communicable range with the charging device 700 (NO in step S717), the control unit 618 sets the Q value of the antenna 602 to the Q value setting switch 604. A setting signal for setting a low Q1 value is transmitted, and the Q value setting switch 604 receiving the setting signal sets the Q value of the antenna 602 to a low Q1 value (step S720), and ends this process.

On the other hand, as a result of the determination in step S708, when the receiving unit 614 of the communication unit 612 does not receive the request confirmation packet (NO in step S708), the process proceeds to FIG. It is determined whether or not a predetermined time has elapsed from the standby (step S721).

As a result of the determination in step S721, when the predetermined time has not elapsed (NO in step S721), the process returns to the process of step S707 in FIG.

As a result of the determination in step S721, when a predetermined time has elapsed (YES in step S721), the control unit 618 assumes that a charging device 700 having only a non-contact charging function exists in the vicinity of the information processing device 600. , A setting signal for setting the Q value of the antenna 602 to a Q value higher than the Q value set in step S701, for example, 50 to several 100 (an example of the second value) is transmitted to the Q value setting switch 604. Upon receiving the set signal, the Q value setting switch 604 sets the Q value of the antenna 602 to a high Q value (step S722).

Next, the control unit 618 waits for the charge authentication packet transmitted from the charging device 700 (step S723). In step S723, for example, the charging device 700 communicates at a low data transmission rate so that sufficient communication is possible even if the Q value of the antenna 602 is set to a high Q value.

Next, the control unit 618 determines whether or not the charging authentication packet has been received by the receiving unit 608 of the charging unit 606 (step S724).

As a result of the determination in step S724, when the receiving unit 608 receives the charge authentication packet (YES in step S724), the control unit 618 determines whether or not the received charge authentication packet is valid (step S725). ), If the charge authentication packet is not valid (NO in step S725), the process returns to step S723.

As a result of the determination in step S725, when the charge authentication packet is valid (YES in step S725), the control unit 618 transmits the charge authentication packet to the charging device 700 at the transmission unit 610 of the charging unit 606 (step S726). ), Proceed to the process of step S716 of FIG.

On the other hand, as a result of the determination in step S724, when the receiving unit 608 does not receive the charge authentication packet (NO in step S724), has the control unit 618 passed a predetermined time from waiting for the charge authentication packet in step S723? Whether or not it is determined (step S727).

As a result of the determination in step S727, if the predetermined time has not elapsed (NO in step S727), the process returns to the process of step S723.

As a result of the determination in step S727, when a predetermined time has elapsed (YES in step S727), the control unit 618 sets the Q value of the antenna 602 to the Q value setting switch 604 to a low Q1 value, for example, 10 to 20 (first). Send a setting signal to set to (an example of the value of). Upon receiving the set signal, the Q value setting switch 604 sets the Q value of the antenna 602 to a low Q1 value (step S728). Then, the process returns to the process of step S707 of FIG.

According to the communication / charging process of FIGS. 20 and 21, even when the charging device 700 having only the non-contact charging function exists in the vicinity of the information processing device 600, the power for charging the battery 622 from the charging device 700 Is transmitted, the Q value of the antenna is set to a high Q value. Therefore, even when the charging device 700 having only the non-contact charging function is present in the vicinity, the non-contact charging can be efficiently performed by using one antenna.

Further, when the Q value of the antenna 602 is set to a low Q1 value by the Q value setting switch 604, when a voltage equal to or higher than the first threshold value is input to the antenna 602, the Q value of the antenna 602 is low Q2. Set to a value. Therefore, the antenna 602 and the limiting resistor 626 are connected. As a result, it is possible to prevent a large voltage from being applied to the communication unit 612 and destroying the circuit of the communication unit 612.

[Charging process executed by the charging device according to the third embodiment of the present invention]
Next, the charging process executed by the charging device 700 according to the third embodiment of the present invention will be described. FIG. 22 is a flowchart of a charging process executed by the charging device 700 according to the third embodiment of the present invention.

In FIG. 22, first, the control unit 718 of the charging device 700 transmits a charging authentication packet to the transmitting unit 710 of the charging unit 706 (step S801). In step S801, the charging device 700 communicates at a low data transmission rate so that sufficient communication is possible even if the Q value of the antenna 702 is set to a high Q value.

Next, the control unit 718 determines whether or not the reply packet is received by the reception unit 708 of the charging unit 706 (step S802), and if the reply packet is not received (NO in step S802), the process of step S801. Return to.

As a result of the determination in step S802, when the reply packet is received (YES in step S802), the control unit 718 determines whether or not the received reply packet is valid (step S803), and the reply packet is valid. If not (NO in step S803), the process returns to step S801.

As a result of the determination in step S803, when the reply packet is valid (YES in step S803), the control unit 718 transmits the power for charging the battery 622 of the information processing device 600 to the transmission unit 710 of the charging unit 706. (Step S804).

Next, the control unit 718 determines whether or not the receiving unit 708 of the charging unit 706 has received the charging packet transmitted from the information processing device 600 at predetermined time intervals (step S805).

As a result of the determination in step S805, when the charging packet is received (YES in step S805), the charging of the battery 622 of the information processing device 600 is not completed, so the process returns to the process of step S804.

As a result of the determination in step S805, when the charging packet is not received (NO in step S805), the charging of the battery 622 of the information processing device 600 is completed, or the information processing device 600 can communicate with the charging device 700. Since it has been taken out, the control unit 718 stops the transmission of the power for charging in the transmission unit 710 of the charging unit 706 (step S806), and ends this process.

[Structure of Information Processing System According to Fourth Embodiment of the Present Invention]
Hereinafter, the information processing system according to the fourth embodiment of the present invention will be described. 23A and 23B are explanatory views for explaining the information processing system according to the fourth embodiment of the present invention.

In FIG. 23A, the information processing system 130 includes an information processing device 800 such as a mobile phone terminal having only a non-contact communication function, and a charging device 300. The charging device 300 may be a charging device having a reader / writer function.

The information processing device 800 has a battery (not shown) inside, and is equipped with one antenna 802 used for communication with the charging device 300.

The charging device 300 is equipped with one antenna 302 used when communicating with the information processing device 800 and, for example, when transmitting electric power for charging to the battery included in the information processing device 200 of FIG. 2 described above.

In the information processing system 130, as shown in FIG. 23B, when the information processing device 800 is placed on the charging device 300 or when the information processing device 800 approaches the charging device 300, non-contact communication is performed. Do.

In the information processing system 130 according to the present embodiment, the information processing device 800 executes the communication process of FIG. 25 described later, and the charging device 300 executes the second communication / charging process of FIGS. 11 and 12 described above. .. Thereby, in both devices, non-contact communication between the information processing device 800 and the charging device 300 can be efficiently performed by using one antenna.

[Structure of Information Processing Device According to Fourth Embodiment of the Present Invention]
Next, the information processing apparatus 800 according to the fourth embodiment of the present invention will be described. FIG. 24 is a block diagram showing a schematic configuration of the information processing apparatus 800 according to the fourth embodiment of the present invention.

In FIG. 24, the information processing device 800 includes an antenna 802, a communication unit 812, a control unit 818, a charging IC 820, and a battery 822.

The antenna 802 receives the packet transmitted from the charging device 300. The Q value of the antenna 802 is set to a low Q value.

The communication unit 812 has a reception unit 814 that receives the packet received by the antenna 802. Further, the communication unit 812 has a transmission unit 816 for transmitting a response packet to the charging device 300. The transmission unit 816 transmits the response packet by load modulation and at a normal data transmission rate.

The control unit 818 controls the communication unit 812 and the charging IC 820. The charging IC 820 charges the battery 822 and efficiently supplies the electric power from the battery 822 to each part of the information processing apparatus 800.

[Communication processing executed by the information processing apparatus according to the fourth embodiment of the present invention]
Next, the communication process executed by the information processing apparatus 800 according to the fourth embodiment of the present invention will be described. FIG. 25 is a flowchart of communication processing executed by the information processing apparatus 800 according to the fourth embodiment of the present invention.

In FIG. 25, first, the control unit 818 of the information processing device 800 waits for, for example, a carrier wave of 13.56 MHz transmitted from the charging device 300 at the receiving unit 814 of the communication unit 812 (step S901).

Next, the control unit 818 determines whether or not the carrier wave has been received by the receiving unit 814 (step S902), and if the carrier wave has not been received (NO in step S902), the process returns to the process of step S901.

As a result of the determination in step S902, when the receiving unit 814 receives the carrier wave (YES in step S902), the control unit 818 waits for the polling signal transmitted from the charging device 300 at the receiving unit 814 of the communication unit 812 (step). S903).

Next, the control unit 818 determines whether or not the polling signal has been received by the receiving unit 814 (step S904), and if the polling signal has not been received (NO in step S904), the process returns to the process of step S903.

As a result of the determination in step S904, when the receiving unit 814 receives the polling signal (YES in step S904), the control unit 818 transmits a response to the polling signal to the charging device 300 at the transmitting unit 816 (step S905).

Next, the control unit 818 executes a normal non-contact communication process with the charging device 300 (step S906), and ends this process.

[Structure of Information Processing System According to Fifth Embodiment of the Present Invention]
Hereinafter, the information processing system according to the fifth embodiment of the present invention will be described. 26A and 26B are explanatory views for explaining the information processing system according to the fifth embodiment of the present invention.

In FIG. 26A, the information processing system 140 is composed of an information processing device 900 such as a mobile phone terminal having only a non-contact charging function, and a charging device 300. The charging device 300 may be a charging device having a reader / writer function.

The information processing device 900 includes a battery (not shown) inside, and is equipped with one antenna 902 used when communicating with the charging device 300 and when transmitting electric power for charging the battery.

The charging device 300 includes one antenna 302 used when communicating with the information processing device 900 and when transmitting electric power for charging the battery included in the information processing device 900.

In the information processing system 140, as shown in FIG. 26B, the information processing device 900 is provided when the information processing device 900 is placed on the charging device 300 or when the information processing device 900 approaches the charging device 300. Non-contact charging of the battery.

In the information processing system 140 according to the present embodiment, the information processing device 900 executes the communication process of FIG. 28 described later, and the charging device 300 executes the second communication / charging process of FIGS. 11 and 12 described above. .. Thereby, in both devices, non-contact charging between the information processing device 900 and the charging device 300 can be efficiently performed by using one antenna.

[Structure of Information Processing Device According to Fifth Embodiment of the Present Invention]
Next, the information processing apparatus 900 according to the fifth embodiment of the present invention will be described. FIG. 27 is a block diagram showing a schematic configuration of the information processing apparatus 900 according to the fifth embodiment of the present invention.

In FIG. 27, the information processing device 900 includes an antenna 902, a charging unit 906, a control unit 918, a charging IC 920, and a battery 922.

The antenna 902 receives the packet transmitted from the charging device 300. Further, the antenna 902 transmits electric power for charging from the charging device 300 to the battery 922. The Q value of the antenna 902 is set to a high Q value.

The charging unit 906 has a receiving unit 908 that receives the electric power for charging the battery 922 transmitted to the antenna 902. Further, the charging unit 906 has a transmitting unit 910 that intermittently transmits a charging packet for requesting the charging device 300 to continue transmitting the electric power for charging until the charging of the battery 922 is completed. The transmission unit 910 transmits the charging packet by load modulation, and also performs the transmission at a data transmission rate lower than the normal data transmission rate.

The control unit 918 controls the charging unit 906 and the charging IC 920. The charging IC 920 charges the battery 922 and efficiently supplies the electric power from the battery 922 to each part of the information processing apparatus 900.

[Charging process executed by the information processing apparatus according to the fifth embodiment of the present invention]
Next, the charging process executed by the information processing apparatus 900 according to the fifth embodiment of the present invention will be described. FIG. 28 is a flowchart of a charging process executed by the information processing apparatus 900 according to the fifth embodiment of the present invention.

In FIG. 28, first, the control unit 918 of the information processing device 900 waits for, for example, a carrier wave of 13.56 MHz transmitted from the charging device 300 at the receiving unit 908 of the charging unit 906 (step S1001).

Next, the control unit 918 determines whether or not the carrier wave has been received by the receiving unit 908 (step S1002), and if the carrier wave has not been received (NO in step S1002), the process returns to the process of step S1001.

As a result of the determination in step S1002, when the receiving unit 908 receives the carrier wave (YES in step S1002), the control unit 918 waits for the charge authentication packet transmitted from the charging device 300 (step S1003). In step S1003, the charging device 300 communicates at a low data transmission rate so that sufficient communication is possible even if the Q value of the antenna 902 is set to a high Q value.

Next, the control unit 918 determines whether or not the charge authentication packet has been received by the reception unit 908 (step S1004), and if it does not receive the charge authentication packet (NO in step S1004), returns to the process of step S1003. ..

As a result of the determination in step S1004, when the receiving unit 908 receives the charge authentication packet (YES in step S1004), the control unit 918 determines whether or not the received charge authentication packet is valid (step S1005). ), If the charge authentication packet is not valid (NO in step S1005), the process returns to step S1003.

As a result of the determination in step S1005, when the charge authentication packet is valid (YES in step S1005), the control unit 918 transmits the charge authentication packet to the charging device 300 at the transmission unit 910 (step S1006).

Next, the control unit 918 monitors the charge of the battery 922 (step S1007).

Next, the control unit 918 determines whether or not the receiving unit 908 has received the electric power for charging the battery 922 (step S1008).

As a result of the determination in step S1008, when the power for charging is received (YES in step S1008), the control unit 918 acquires the battery remaining amount information of the battery 922 from the charging IC 920, and the battery 922 is fully charged. (Step S1009).

As a result of the determination in step S1009, when the battery is not fully charged (NO in step S1009), the control unit 918 transmits a charging packet to the charging device 300 in the transmission unit 910 (step S1010), and processes in step S1007. Return to. In step S1010, communication is performed at a low data transmission rate so that sufficient communication is possible even if the Q value of the antenna 902 is set to a high Q value.

As a result of the determination in step S1009, when the battery is fully charged (YES in step S1009), the control unit 918 returns to the process of step S1007 without transmitting the charging packet to the charging device 300 in the transmission unit 910. ..

As a result of the determination in step S1008, when the power for charging is not received, that is, when the power transmission from the charging device 300 is stopped because the control unit 918 did not transmit the charging packet in the transmission unit 910. Alternatively, when the information processing device 900 is taken out of the communicable range with the charging device 300 (NO in step S1008), this process ends.

[Program related to the information processing system 100 according to the embodiment of the present invention]
[Program related to information processing device 200]
The program for making the computer function as the information processing apparatus 200 according to the embodiment of the present invention enables efficient non-contact communication and non-contact charging using the same antenna.

[Program for charging device 300]
The program for making the computer function as the charging device 300 according to the embodiment of the present invention enables efficient non-contact communication and non-contact charging using the same antenna.

Although preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such examples. It is clear that a person skilled in the art can come up with various modifications or modifications within the scope of the claims, which naturally belong to the technical scope of the present invention. Understood.

For example, although it has been shown above that a program (computer program) for causing a computer to function as an information processing device 200 or a charging device 300 according to an embodiment of the present invention is provided, the embodiment of the present invention has been shown. Further, a storage medium in which each of the above programs is stored can also be provided.

The above-described configuration shows an example of an embodiment of the present invention, and naturally belongs to the technical scope of the present invention.

100 Information processing system 200 Information processing device 202, 302, 402 Antenna 204, 304 Q value setting switch 206, 306 Charging unit 212, 312 Communication unit 218, 318 Control unit 222 Battery 300 Charging device 624 Voltage detection circuit 626 Limiting resistance

Claims (5)

An antenna with a variable Q value for non-contact communication with an external device using a carrier wave of a predetermined frequency and for non-contact charging of the battery of the external device using the carrier wave. ,
A setting unit that sets the Q value of the antenna to a predetermined value,
A response signal acquisition unit that acquires a response signal as information regarding charging of the battery in response to the charge authentication information transmitted from the external device to the external device.
A charging continuation information acquisition unit that intermittently acquires charging continuation information transmitted from the external device at predetermined time intervals, and a charging continuation information acquisition unit.
The response signal the response signal acquiring unit has acquired or on the basis of the said continuous charging information continuous charging information acquisition unit has acquired, and a determination unit which necessity of charging of the battery,
With
The setting unit selectively sets the Q value of the antenna according to the result of the determination by the determination unit based on the response signal, and then starts transmission of power for charging after the elapse of the predetermined time. Let ,
Charging device. The charging device according to claim 1, wherein the charging continuation information acquisition unit continuously transmits the electric power while the charging continuation information is intermittently acquired. A power transmission unit that transmits power for charging the battery to the external device,
In the continuous charging information acquisition unit, when the acquisition of intermittently obtained have the continuous charging information is stopped, the power transmission stop unit for stopping the transmission of the power by the power transmission unit,
Further prepare
The charging device according to claim 2. An antenna having a variable Q value for non-contact communication with an external device using a carrier wave of a predetermined frequency and for non-contact charging of the battery of the external device using the carrier wave. , Setting the Q value to a predetermined value,
Acquiring a response signal as information regarding charging of the battery in response to the charging authentication information transmitted from the external device to the external device, and
Intermittent acquisition of charging continuation information transmitted from the external device at predetermined time intervals
Based on the acquired response signal or the charging continuation information, it is possible to determine whether or not the battery needs to be charged.
After selectively setting the Q value of the antenna according to the result of determining whether or not the battery needs to be charged based on the response signal, transmission of power for charging is started after the elapse of the predetermined time. To let and
including,
Control method. On the computer
An antenna having a variable Q value for non-contact communication with an external device using a carrier wave of a predetermined frequency and for non-contact charging of the battery of the external device using the carrier wave. , Setting the Q value to a predetermined value,
Acquiring a response signal as information regarding charging of the battery in response to the charging authentication information transmitted from the external device to the external device, and
Intermittent acquisition of charging continuation information transmitted from the external device at predetermined time intervals
Based on the acquired response signal or the charging continuation information, it is possible to determine whether or not the battery needs to be charged.
After selectively setting the Q value of the antenna according to the result of determining whether or not the battery needs to be charged based on the response signal, transmission of power for charging is started after the elapse of the predetermined time. To let and
A program for executing a control method, including.

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