JP2012100390A - Feeding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To appropriately charge an electronic apparatus with a feeding device.SOLUTION: The feeding device for transmitting power to an electronic apparatus mounted with a battery includes: first communication means for transmitting power to the electronic apparatus in a contactless manner; second communication means for receiving data transmitted from the electronic apparatus; first determination means for determining whether or not the electronic apparatus can transmit the data to the feeding device in response to the power transmitted by the first communication means; second determination means for determining whether or not the electronic apparatus can charge the battery in response to the power transmitted by the first communication means; and control means for controlling the state of the electronic apparatus in response to the first determination means and the second determination means.

Description

  The present invention relates to a power supply apparatus that supplies power without contact.

  2. Description of the Related Art In recent years, a power feeding system is known that includes a power feeding device that transmits power in a contactless manner without being connected by a connector, and an electronic device that charges a battery mounted by the power transmitted from the power feeding device. In such a non-contact power supply system, a power supply apparatus that supplies power to an electronic device by using an electromagnetic resonance phenomenon is known (Patent Document 1).

JP 2010-063245 A

  Conventionally, it has been disclosed that a power supply apparatus selects an electronic device that is a specific power supply destination from a plurality of power supply destinations, but how to charge the selected electronic device is determined by the selected electronic device. However, it was not disclosed how to supply power.

  For this reason, the power feeding device cannot cause each electronic device to be appropriately charged.

  In view of the above, an object of the present invention is to allow a power supply apparatus to appropriately charge an electronic device.

  A power supply device according to the present invention is a power supply device that transmits power to an electronic device in which a battery is mounted, and the power supply device includes: a first communication unit that transmits power to the electronic device in a contactless manner; Whether or not the electronic device can transmit the data to the power supply apparatus according to the second communication means for receiving data transmitted from the electronic device and the power transmitted by the first communication means. First determination means for determining whether or not the electronic device can charge the battery according to the power transmitted by the first communication means; and Control means for controlling the state of the electronic device according to the first determination means and the second determination means.

  ADVANTAGE OF THE INVENTION According to this invention, an electric power feeder can be made to perform appropriate charge with respect to an electronic device.

1 is a block diagram illustrating an example of a power feeding system in Embodiment 1. FIG. 3 is a diagram illustrating an example of a configuration of a matching circuit 103 of the power supply apparatus 100 according to the first embodiment. 6 is a flowchart illustrating an example of a first power supply process performed by the power supply apparatus according to the first embodiment. 6 is a flowchart illustrating an example of a first power supply control process performed by the power supply apparatus according to the first embodiment. 6 is a flowchart illustrating an example of a second power supply process performed by the power supply apparatus according to the first embodiment. 6 is a flowchart illustrating an example of a transmission confirmation process performed by the power supply apparatus 100 according to the first embodiment. 6 is a flowchart illustrating an example of a second power supply control process performed by the power supply apparatus according to the first embodiment. 6 is a flowchart illustrating an example of a command reception process performed by the electronic device 200 according to the first embodiment. 6 is a flowchart illustrating an example of a command reception process performed by the electronic device 200 according to the first embodiment. 6 is a flowchart illustrating an example of a command reception process performed by the electronic device 200 according to the first embodiment. 6 is a flowchart illustrating an example of a command reception process performed by the electronic device 200 according to the first embodiment. 3 is a flowchart illustrating an example of a power supply preparation process performed by the electronic device 200 according to the first embodiment. 6 is a flowchart illustrating an example of a charging process performed by the electronic device 200 according to the first embodiment. 6 is a flowchart illustrating an example of a communication mode change process performed by the electronic device 200 according to the first embodiment. 6 is a flowchart illustrating an example of a transmission process performed by the electronic device 200 according to the first embodiment. 6 is a flowchart illustrating an example of a remaining capacity detection process performed by the electronic device 200 according to the first embodiment. 6 is a flowchart illustrating an example of error processing performed by the electronic device 200 according to the first embodiment.

[Example 1]
Hereinafter, Example 1 of the present invention will be described in detail with reference to the drawings. The power supply system according to the first embodiment includes a power supply apparatus 100 and an electronic device 200 as illustrated in FIG. The power supply apparatus 100 includes a power supply antenna 108 for supplying power to the electronic device 200 in a contactless manner. The electronic apparatus 200 includes a power reception antenna 201 for receiving power supplied from the power supply apparatus 100 in a contactless manner. Have.

  The power feeding apparatus 100 transmits power to the electronic device 200 through the power feeding antenna 108 in a contactless manner. The electronic device 200 charges the battery 210 connected to the electronic device 200 according to the electric power transmitted from the power supply apparatus 100 via the power receiving antenna 201 in a contactless manner. Note that the power supply apparatus 100 can transmit power without contact even when there are two or more electronic devices 200.

  The electronic device 200 may be a digital still camera, a mobile phone with a camera, a digital video camera, a music player, or the like as long as it is a device that operates with the power supplied from the battery 210.

  Note that the power supply system according to the first embodiment may be a system in which the power supply apparatus 100 transmits power to the electronic device 200 by electromagnetic induction, and the electronic device 200 receives power from the power supply apparatus 100 by electromagnetic induction. In addition, the power supply device 100 may transmit power to the electronic device 200 by electromagnetic resonance, and the electronic device 200 may receive power from the power supply device 100 by electromagnetic resonance.

  The electronic apparatus 200 according to the first embodiment can receive power from the power supply apparatus 100 when the distance between the power supply apparatus 100 and the electronic apparatus 200 is within a predetermined range. In addition, electronic device 200 cannot receive power from power supply device 100 when the distance between power supply device 100 and electronic device 200 does not exist within a predetermined range. The predetermined range is a range in which the power supply apparatus 100 and the electronic device 200 can communicate with each other.

  The power supply apparatus 100 includes an oscillator 101, a power transmission circuit 102, a matching circuit 103, a modulation / demodulation circuit 104, a CPU 105, a ROM 106, a RAM 107, a power supply antenna 108, a timer 109, a recording / reproducing unit 110, a conversion unit 111, a communication unit 112, and a display unit. 113.

  The oscillator 101 converts a DC power supplied from an AC power source (not shown) through the converter 111 into a power corresponding to a target value determined by the CPU 105 and supplies a high frequency used to supply the electronic device 200. Oscillates.

  The power transmission circuit 102 generates power to be supplied to the electronic device 200 via the power feeding antenna 108 according to the frequency oscillated by the oscillator 101. The power generated by the power transmission circuit 102 is supplied to the matching circuit 103. In addition, the power generated by the power transmission circuit 102 includes first power for the power supply apparatus 100 to transmit a command for controlling the electronic device 200 to the electronic apparatus 200, and the power supply apparatus 100 to the electronic apparatus 200. And second power for charging the battery 210. The second power is higher than the first power, and when the power supply apparatus 100 transmits the second power to the electronic device 200, the power supply apparatus 100 may transmit a command to the electronic device 200. Can not. The first power is power set by the CPU 105 so that the power supply apparatus 100 can transmit a command to any electronic device.

  The CPU 105 controls the power transmission circuit 102 so that the power transmitted to the electronic device 200 is switched between the first power and the second power.

  The matching circuit 103 is a resonance circuit for performing resonance between the power feeding antenna 108 and the power receiving antenna 201 in accordance with the frequency oscillated by the oscillator 101. As shown in FIG. 2, the matching circuit 103 includes variable capacitors 301 and 302, a variable coil 303, a variable resistor 304, and the like, and performs impedance matching between the power transmission circuit 102 and the feeding antenna 108.

  The CPU 105 sets the values of the variable capacitors 301 and 302, the variable coil 303, and the variable resistor 304 of the matching circuit 103 in order to set the frequency oscillated by the oscillator 101 to a frequency at which the feeding antenna 108 and the power receiving antenna 201 resonate. To control. The frequency for resonance between the power feeding antenna 108 and the power receiving antenna 201 is hereinafter referred to as “resonance frequency f”.

  The resonance frequency f is assumed to be represented by the following mathematical formula (1). L represents the inductance of the matching circuit 103, and C represents the capacitance of the matching circuit 103.

  The CPU 105 controls the matching circuit 103 so as to change the value of the inductance L of the matching circuit 103 and the value of the capacitance C of the matching circuit 103 so that the frequency oscillated by the oscillator 101 becomes a predetermined resonance frequency f.

  The variable capacitor 301 and the variable capacitor 302 are capacitors for impedance matching. The variable capacitor 302 is also a capacitor for adjusting the resonance frequency f obtained by Expression (1).

  The variable coil 303 is a coil for adjusting the resonance frequency f obtained by Expression (1).

  The matching circuit 103 may further include a capacitor in addition to the variable capacitors 301 and 302, may further include a coil in addition to the variable coil 303, and may have a resistor in addition to the variable resistor 304. It may be. The resonance frequency f may be a commercial frequency of 50/60 Hz, may be 10 to several hundred kHz, or may be a frequency around 10 MHz.

  Further, the matching circuit 103 can detect a change in the current flowing through the power supply antenna 108 and the voltage supplied to the power supply antenna 108.

  The modem circuit 104 modulates the power generated by the power transmission circuit 102 in accordance with a predetermined protocol in order to transmit a command to the electronic device 200. The predetermined protocol is a communication protocol such as RFID (Radio Frequency IDentification). The power generated by the power transmission circuit 102 is converted into a pulse signal by the modulation / demodulation circuit 104 as a command for communicating with the electronic device 200 and transmitted to the electronic device 200. The pulse signal transmitted to the electronic device 200 is recognized by the electronic device 200 as bit data including information of “1” and “0” by being analyzed. The command includes information for identifying the destination, a command code indicating an operation instructed by the command, and the like.

  The modem circuit 104 converts the power generated by the power transmission circuit 102 into a pulse signal by ASK (Amplitude Shift Keying) modulation using amplitude displacement. ASK modulation is modulation using amplitude displacement, and is used for communication between an IC card and a card reader that performs non-contact communication with the IC card.

  In addition, when the modem circuit 104 transmits a command to the electronic device 200, the response from the electronic device 200 to the command transmitted to the electronic device 200 according to the change in the current flowing through the feeding antenna 108 detected by the matching circuit 103. The signal can be demodulated. As a result, the modem circuit 104 can receive a response signal to the command transmitted to the electronic device 200 from the electronic device 200 by the load modulation method. The modem circuit 104 transmits a command to the electronic device 200 in accordance with an instruction from the CPU 105. Further, when the modulation / demodulation circuit 104 receives a response signal from the electronic device 200, the modulation / demodulation circuit 104 supplies the received response signal to the CPU 105.

  When connected to an AC power source (not shown), the CPU 105 controls each unit of the power supply apparatus 100 with power supplied from the AC power source (not shown) via the conversion unit 111. In addition, the CPU 105 controls the operation of each unit of the power supply apparatus 100 by executing a computer program stored in the ROM 106. The CPU 105 controls the power supplied to the electronic device 200 by controlling the power transmission circuit 102. Further, the CPU 105 transmits a command to the electronic device 200 by controlling the modulation / demodulation circuit 104.

  The ROM 106 stores information such as a computer program that controls the operation of each unit of the power supply apparatus 100 and parameters related to the operation of each unit.

  The RAM 107 is a rewritable non-volatile memory, a computer program that temporarily controls the operation of each unit of the power supply apparatus 100, information such as parameters related to the operation of each unit, information received from the electronic device 200 by the modem circuit 104, and the like Record. In addition, the RAM 107 records a management table for managing a target to which the power supply apparatus 100 supplies power. In the management table recorded in the RAM 107, information included in the device information acquired from the electronic device 200 by the power supply apparatus 100 is registered.

  The power feeding antenna 108 is an antenna for transmitting the power generated by the power transmission circuit 102 to the electronic device 200 to the electronic device 200.

  The timer 109 measures the current time, the time related to the operation performed in each unit, and the like. A threshold value for the timer 109 is recorded in advance in the ROM 106.

  The recording / reproducing unit 110 records video data, audio data, and the like received from the electronic device 200 via the communication unit 112 in the recording medium 110a. The recording / reproducing unit 110 can also read video data, audio data, and the like from the recording medium 110 a and supply them to the RAM 107, the communication unit 112 and the display unit 113. The recording medium 110a may be a hard disk or a memory card. Further, the recording medium 110 a may be built in the power supply apparatus 100 or an external recording medium that can be attached to and detached from the power supply apparatus 100.

  When an AC power supply (not shown) is connected, the conversion unit 111 converts AC power supplied from the AC power supply (not shown) into DC power, and supplies the converted DC power to the entire power supply apparatus 100.

  The communication unit 112 can transmit video data and audio data stored in the RAM 107 and the recording medium 110 a to the electronic device 200, and can receive video data and audio data transmitted from the electronic device 200. For example, the communication unit 112 may transmit and receive video data and audio data using a serial bus interface such as USB (Universal Serial Bus) or an interface such as HDMI. Further, the communication unit 112 may transmit and receive video data and audio data by communication conforming to a wireless communication method. Further, for example, the communication unit 112 may perform transmission and reception of video data and audio data by modulating the signals to signals conforming to the 802.11a, b, g, and n standards defined in the wireless LAN standard. .

  Note that the communication unit 112 receives video data or audio data from the electronic device 200, or receives video data or audio data even when a command is transmitted from the power supply apparatus 100 to the electronic device 200 by the modulation / demodulation circuit 104. Can be transmitted to the electronic device 200. The communication unit 112 can transmit the video data and audio data supplied from the recording / reproducing unit 110 to the electronic device 200 when the video data and audio data are supplied from the recording / reproducing unit 110.

  The display unit 113 displays video data read from the recording medium 110 a by the recording / reproducing unit 110, icons indicating the operating state of the power supply apparatus 100, and the like. The display unit 113 may display video data received from the electronic device 200 by the communication unit 112. In the case of video data from the recording / playback unit 110, the display unit 113 can display the video data supplied from the recording / playback unit 110.

  The power supply apparatus 100 may further include a speaker unit (not shown). A speaker unit (not shown) may output audio data read from the recording medium 110 a by the recording / reproducing unit 110 and audio data received from the electronic device 200 by the communication unit 112.

  The power supply apparatus 100 has a first power supply mode and a second power supply mode as power supply modes. The first power supply mode is a mode in which the power supply apparatus 100 transmits only one of the first power and the second power to the electronic device 200. In addition, the second power supply mode refers to the case where the power supply apparatus 100 transmits one of the first power and the second power to the electronic device 200 while the power supply apparatus 100 transmits the electronic power via the communication unit 112. This is a mode for transmitting / receiving video data and audio data to / from the device 200.

  A unit including at least the power transmission circuit 102, the matching circuit 103, and the modulation / demodulation circuit 104 is referred to as a “first communication unit”, and the communication unit 112 is referred to as a “second communication unit”.

  Next, the electronic device 200 will be described. The electronic device 200 includes a power receiving antenna 201, a matching circuit 202, a rectifying / smoothing circuit 203, a modem circuit 204, a CPU 205, a ROM 206, a RAM 207, a regulator 208, a charging control unit 209, a battery 210, a timer 211, a communication unit 212, and an imaging unit 213. Have.

  The power receiving antenna 201 is an antenna for receiving the power supplied from the power supply apparatus 100.

  The matching circuit 202 is a resonance circuit for performing impedance matching so that the power receiving antenna 201 resonates at the same frequency as the resonance frequency f of the power supply apparatus 100. The matching circuit 202 includes a variable capacitor, a variable coil, a variable resistor, and the like. The CPU 205 controls the capacitance value of the variable capacitor, the inductance value of the variable coil, and the impedance value of the variable resistor so that the power receiving antenna 201 resonates at the same frequency as the resonance frequency f of the power supply apparatus 100. .

  The rectifying / smoothing circuit 203 removes a command and noise from the power received by the power receiving antenna 201 and generates DC power for charging the battery 210. Further, the rectifying / smoothing circuit 203 supplies the generated DC power to the regulator 208. The rectifying / smoothing circuit 203 supplies the command removed from the power received by the power receiving antenna 201 to the modulation / demodulation circuit 204.

  The modem circuit 204 analyzes the command supplied from the rectifying / smoothing circuit 203 according to the power supply apparatus 100 and a predetermined communication protocol, and supplies the command analysis result to the CPU 105.

  The CPU 205 determines what command the command received by the modem circuit 204 is based on the analysis result supplied from the modem circuit 204, and performs the process specified by the command code corresponding to the received command. .

  In addition, the CPU 205 controls the operation of each unit of the electronic device 200 by executing a computer program stored in the ROM 206.

  The ROM 206 stores information such as a computer program that controls the operation of each unit of the electronic device 200 and parameters related to the operation of each unit. In addition, device information of the electronic device 200, power reception capability information of the electronic device 200, display data, and the like are recorded in the ROM 206. The device information of the electronic device 200 includes an identification ID of the electronic device 200, a manufacturer name, a device name, a manufacturing date, and means for receiving power transmitted from the power supply device 100 in a contactless manner. Information indicating whether or not it has is included. The means for receiving power transmitted from the power supply apparatus 100 in a non-contact manner is hereinafter referred to as “power receiving means”. Note that the power receiving means includes at least the power receiving antenna 201. In addition to the power receiving antenna 201, the power receiving means may further include a matching circuit 202, a rectifying / smoothing circuit 203, and a modulation / demodulation circuit 204.

  The power reception capability information of the electronic device 200 includes information indicating power that can be received by the electronic device 200 at maximum and information indicating power that can be received by the electronic device 200 at the minimum. Furthermore, the power reception capability information of the electronic device 200 includes information indicating power necessary for the electronic device 200 to communicate with the power supply apparatus 100 by a command. Further, the power reception capability information of the electronic device 200 includes information indicating the power required for the electronic device 200 to operate the communication unit 212, information indicating the power required for the electronic device 200 to charge, and the electronic device 200. Information indicating whether or not the battery has a charging function is included. Furthermore, the power reception capability information of the electronic device 200 includes information indicating power necessary for the electronic device 200 to operate the imaging unit 213. In addition, the power reception capability information of the electronic device 200 includes information indicating the number of power reception units included in the electronic device 200. Note that when the electronic device 200 and the battery 210 have power receiving means, the number of power receiving means included in the electronic device 200 is two. In addition, when the electronic device 200 includes a power receiving unit, the number of power receiving units included in the electronic device 200 is one.

  The RAM 207 is a rewritable nonvolatile memory, and records a computer program that temporarily controls the operation of each unit of the power supply apparatus 100, information such as parameters regarding the operation of each unit, information transmitted from the power supply apparatus 100, and the like.

  The regulator 208 performs control so that the voltage of the DC power supplied from the rectifying / smoothing circuit 203 becomes a voltage value set by the CPU 205. Note that the DC power controlled to have the voltage value set by the CPU 205 from the rectifying / smoothing circuit 203 via the regulator 208 is supplied to the charging control unit 209.

  Further, the regulator 208 controls so that the voltage of the power supplied from the battery 210 becomes a voltage value set by the CPU 205. The DC power controlled so as to have a voltage value set by the CPU 205 from the battery 210 via the regulator 208 is supplied to at least the CPU 205, ROM 206 and RAM 207.

  Further, the regulator 208 controls so that the voltage of power supplied from an AC power source (not shown) becomes a voltage value set by the CPU 205. Direct current power controlled so as to have a voltage value set by the CPU 205 from an AC power source (not shown) via the regulator 208 is supplied to at least the CPU 205, ROM 206, and RAM 207.

  Charging control unit 209 charges battery 210 when DC power is supplied from regulator 208. In addition, the charging control unit 209 periodically detects information indicating the remaining capacity of the attached battery 210 and supplies the information to the CPU 205. The CPU 205 records information indicating the remaining capacity of the battery 210 supplied from the charging control unit 209 (hereinafter referred to as “remaining capacity information”) in the RAM 207.

  The battery 210 is a battery that can be attached to and detached from the electronic device 200. The battery 210 is a rechargeable secondary battery, such as a lithium ion battery. The battery 210 can supply power to each part of the electronic device 200.

  The timer 211 measures the current time, the time related to operations performed in each unit, and the like. The threshold value for the timer 211 is recorded in the ROM 206 in advance.

  The communication unit 212 can transmit video data and audio data recorded in the ROM 206 and the recording medium 213 b to the power supply apparatus 100, and can receive video data and audio data from the power supply apparatus 100. For example, the communication unit 212 transmits and receives video data and audio data using a serial bus interface such as USB. Further, for example, the communication unit 212 may perform transmission and reception of video data and audio data by modulating the signal to a signal conforming to the 802.11a, b, g, and n standards defined as a wireless LAN.

  The imaging unit 213 includes an imaging device, an image processing unit, an encoding control unit, a recording unit 213a, a recording medium 213b, and the like. The imaging unit 213 captures video data from the subject, and records video data such as a still image and a moving image obtained from the result of the recording on the recording medium 213b. Furthermore, the imaging unit 213 may have a configuration necessary for photographing the subject in the electronic device 200.

  Electronic device 200 has a first charging mode and a second charging mode, which will be described later, as charging modes for charging. The electronic device 200 further has a communication mode and a power supply preparation mode, which will be described later, as operation modes. Note that when the electronic device 200 is in the first charging mode, the electronic device 200 can perform an operation according to the communication mode or an operation according to the power supply preparation mode while performing an operation according to the first charging mode. Further, when the electronic device 200 is in the second charging mode, the electronic device 200 can perform an operation according to the communication mode or an operation according to the power supply preparation mode while performing an operation according to the first charging mode.

  A case where the power of the electronic device 200 is on is referred to as a “power-on state”, and a case where the power of the electronic device 200 is off is referred to as a “power-off state”. The state where the power source of the electronic device 200 is on is a state where power is supplied to the entire electronic device 200. The state in which the power supply of the electronic device 200 is OFF means that the power receiving antenna 201, the matching circuit 202, the rectifying / smoothing circuit 203, the modem circuit 204, the CPU 205, the ROM 206, the RAM 207, the regulator 208, the charging control unit 209, the battery 210, and the timer 211. Although necessary power is supplied, power is not supplied to the communication unit 212 and the imaging unit 213.

  Note that the power feeding antenna 108 and the power receiving antenna 201 may be a helical antenna or a planar antenna such as a meander line antenna.

  In the first embodiment, the power supply apparatus 100 transmits power to the electronic device 200 in a contactless manner, and the electronic apparatus 200 receives power from the power supply device 100 in a contactless manner. "May be paraphrased as" wireless "or" contactless ".

  Also, in the system in which the power supply apparatus 100 supplies power to the electronic apparatus 200 in a non-contact manner by providing the electrode in the power supply apparatus 100 instead of the power supply antenna 108 and providing the electrode in the electronic apparatus 200 instead of the power reception antenna 201. The present invention can be applied.

  The present invention can also be applied to a system in which the power supply apparatus 100 supplies electric power to the electronic device 200 in a non-contact manner by electric field coupling.

(First power supply process)
The first power supply process performed by the power supply apparatus 100 when the power supply mode of the power supply apparatus 100 is set to be the first power supply mode will be described with reference to the flowchart of FIG. In this case, the description will be made assuming that the electronic device 200 is selected as the power supply target of the power supply device 100.

  In step S <b> 301, the CPU 105 controls the oscillator 101, the power transmission circuit 102, and the matching circuit 103 so as to transmit the first power to the electronic device 200 in order to communicate with the electronic device 200 using a command. In this case, the flowchart proceeds from S301 to S302.

  In step S <b> 302, the CPU 105 controls the modulation / demodulation circuit 104 to transmit a first command for requesting the remaining capacity information of the electronic device 200 to the electronic device 200. Further, the CPU 105 controls the modulation / demodulation circuit 104 so as to receive a response signal corresponding to the first command. When the CPU 105 determines that the modulation / demodulation circuit 104 has not received a response signal corresponding to the first command, this flowchart ends. In this case, the CPU 105 controls the oscillator 101, the power transmission circuit 102, and the matching circuit 103 so as not to transmit the first power to the electronic device 200. When the CPU 105 determines that the modem circuit 104 has received a response signal corresponding to the first command, the process proceeds from S302 to S303.

  In S303, the CPU 105 determines whether or not the electronic device 200 is in a chargeable state according to the remaining capacity information included in the response signal corresponding to the first command received in S302. When the CPU 105 determines that the battery 210 is fully charged, the CPU 105 determines that the electronic device 200 is not in a chargeable state. When the CPU 105 determines that the error information is included in the response signal corresponding to the first command, the CPU 105 determines that the electronic device 200 is not in a chargeable state. In addition, even when the CPU 105 determines that the battery 210 is not fully charged, if it is detected that the electronic device 200 is connected to an AC power source (not shown), the CPU 105 can charge the electronic device 200. It is determined that the condition is not correct. When the CPU 105 determines that the electronic device 200 is not in a chargeable state (No in S303), this flowchart ends. Also in this case, the CPU 105 controls the oscillator 101, the power transmission circuit 102, and the matching circuit 103 so as not to transmit the first power to the electronic device 200.

  If the battery 105 is not fully charged by the CPU 105 and it is not detected that the electronic device 200 is connected to an AC power source (not shown), the CPU 105 determines that the electronic device 200 is in a chargeable state. To do. When the CPU 105 determines that the electronic device 200 is in a chargeable state (Yes in S303), the flowchart proceeds from S303 to S304.

  In step S <b> 304, the CPU 105 controls the modulation / demodulation circuit 104 to transmit a second command for notifying the start of the power supply preparation process to the electronic device 200. The power supply preparation process is a process for detecting power supply efficiency and operation information. The power supply efficiency is information indicating how much power the electronic device 200 can receive with respect to the power transmitted from the power supply apparatus 100. Further, the operation information is information indicating the power required when the electronic device 200 performs a specific operation. In the operation information, information indicating whether or not the electronic device 200 can operate the communication unit 212 with the power received from the power supply apparatus 100 and the operation of the entire imaging unit 213 with the power received from the power supply apparatus 100 are included. Information indicating whether or not it is possible is included. Further, in the operation information, information indicating whether or not the battery 210 can be charged with the power received from the power supply apparatus 100 and power supplied to the entire electronic device 200 with the power received from the power supply apparatus 100 are provided. Information indicating whether or not it is possible is included. The power supply efficiency and the operation information are hereinafter referred to as “detection information”.

  The power supply preparation process is a process performed by the CPU 105 before the power supply apparatus 100 causes the electronic device 200 to charge the battery 210. The second command includes time information indicating a time during which the power supply apparatus 100 transmits power to the electronic device 200 in order to detect the power supply efficiency, and the power supply apparatus 100 transmits to the electronic device 200 in order to detect the power supply efficiency. Power supply power information indicating power is included.

  When the electronic device 200 receives the second command, the electronic device 200 receives the power transmitted from the power supply apparatus 100 until the time indicated by the time information elapses, and the power received from the power supply apparatus 100 The received power information indicating is detected. Furthermore, the electronic device 200 detects power supply efficiency according to the power supply power information and the power reception power information, and detects operation information. When the CPU 105 determines that the modulation / demodulation circuit 104 has received a response signal corresponding to the second command, the CPU 105 measures the time elapsed since the reception of the response signal corresponding to the second command. The timer 109 is controlled. In this case, the flowchart proceeds from S304 to S305.

  In step S <b> 305, the CPU 105 controls the oscillator 101, the power transmission circuit 102, and the matching circuit 103 so as to transmit power for performing power supply preparation processing to the electronic device 200. Further, the CPU 105 determines whether or not the time measured by the timer 109 has passed the time indicated by the time information included in the second command. When the CPU 105 determines that the time measured by the timer 109 has not passed the time indicated by the time information, the CPU 105 continuously transmits power for performing power supply preparation processing to the electronic device 200. To control. In this case, the CPU 105 controls the oscillator 101, the power transmission circuit 102, and the matching circuit 103 so as to continuously transmit power for performing power supply preparation processing to the electronic device 200. The power for performing the power supply preparation process may be equal to the second power as long as the power is higher than the first power.

  When the CPU 105 determines that the time measured by the timer 109 has passed the time indicated by the time information, the CPU 105 stops transmitting power to the electronic device 200 for performing power supply preparation processing. In this case, the CPU 105 controls the oscillator 101, the power transmission circuit 102, and the matching circuit 103 so as to stop transmission of power for performing power supply preparation processing to the electronic device 200. In this case, the flowchart proceeds from S305 to S306.

  In step S <b> 306, the CPU 105 controls the modulation / demodulation circuit 104 to transmit a third command for notifying the end of the power supply preparation process to the electronic device 200. When the CPU 105 determines that the modulation / demodulation circuit 104 has received a response signal corresponding to the third command, the process proceeds from S306 to S307.

  In step S <b> 307, the CPU 105 controls the modulation / demodulation circuit 104 so as to transmit, to the electronic device 200, a fourth command for requesting detection information detected by the electronic device 200 through the power supply preparation process. When the CPU 105 determines that the detection information is acquired from the response signal corresponding to the fourth command received by the modem circuit 104, the process proceeds from S307 to S308.

  In S308, the CPU 105 determines whether or not the electronic device 200 can charge the battery 210 using the power transmitted from the power supply apparatus 100 according to the detection information acquired in S307 (second determination). ). When it is determined by the CPU 105 that the electronic device 200 can charge the battery 210 using the power transmitted from the power supply apparatus 100 (Yes in S308), the process proceeds from S308 to S313. When the CPU 105 determines that the electronic device 200 cannot charge the battery 210 by the power transmitted from the power supply apparatus 100 (No in S308), the process proceeds from S308 to S309.

  In step S <b> 309, the CPU 105 acquires power reception capability information from the electronic device 200, and determines whether the electronic device 200 has a plurality of power reception units according to the power reception capability information acquired from the electronic device 200. When the CPU 105 determines that the electronic device 200 has a plurality of power receiving means (Yes in S309), the process proceeds from S309 to S310. When the CPU 105 determines that the electronic device 200 does not have a plurality of power receiving units (No in S309), the process proceeds from S309 to S311.

  In step S <b> 310, the CPU 105 controls the modulation / demodulation circuit 104 so as to transmit to the electronic device 200 a fifth command for requesting the invalidated power receiving unit to be valid. When the CPU 105 determines that the modem circuit 104 has received a response signal corresponding to the fifth command, the process proceeds from S310 to S311.

  In step S <b> 311, the CPU 105 sets the electronic device 200 selected as the power supply target of the power supply apparatus 100 to be excluded from the power supply target. In this case, the CPU 105 sets a flag indicating that it is invalid as a power supply target in the identification ID of the electronic device 200 recorded in the management table of the RAM 107. In this case, the flowchart proceeds from S311 to S312.

  In S <b> 312, the CPU 105 performs a selection process for selecting a device other than the electronic device 200 excluded from the power supply target as the power supply target. For this reason, the power supply apparatus 100 selects a device other than the electronic device 200 determined to be unable to be charged by the power transmitted from the power supply apparatus 100 as a power supply target of the power supply apparatus 100. At this time, the identification ID of the electronic device 200 registered in the management table of the RAM 107 is set with a flag indicating that it is invalid as a power supply target. Thereby, the CPU 105 does not select the electronic device 200 as a power supply target again when performing the selection process of S312.

  In step S313, the CPU 105 determines whether the power supply apparatus 100 can supply power to the entire electronic device 200 while charging the battery 210 in the electronic device 200 according to the detection information acquired in step S307. Determine (first determination).

  When it is determined by the CPU 105 that the power supply apparatus 100 can supply power to the entire electronic device 200 while charging the battery 210 to the electronic device 200 (Yes in S313), the flowchart is started from S313. The process proceeds to S317. When the CPU 105 determines that the power supply apparatus 100 cannot supply power to the entire electronic device 200 while charging the battery 210 to the electronic apparatus 200, the power supply apparatus 100 supplies power to the entire electronic apparatus 200. Can not supply. However, in this case, the power supply apparatus 100 can cause the electronic device 200 to charge the battery 210. When it is determined by the CPU 105 that the power supply apparatus 100 cannot supply power to the entire electronic device 200 but the electronic device 200 can charge the battery 210 (No in S313), the flowchart is as follows. , The process proceeds from S313 to S314.

  In S <b> 313, the CPU 105 determines whether or not the power supply apparatus 100 can supply power to the entire electronic device 200 while allowing the electronic device 200 to charge the battery 210. However, the determination in S313 may be performed by the CPU 105 when it is detected that the electronic device 200 is in a power-on state. Therefore, in the case of Yes in S308, if it is detected that the electronic device 200 is in the power-off state, the CPU 105 may perform the process of S314 without performing the process of S313.

  In S <b> 314, the CPU 105 controls the modulation / demodulation circuit 104 to transmit a sixth command for requesting the electronic device 200 to enter the first charging mode to the electronic device 200. When the CPU 105 determines that the modem circuit 104 has received a response signal corresponding to the sixth command, the process proceeds from S314 to S315. The first charging mode is a state in which the electronic device 200 charges the battery 210 while preventing the communication unit 212 and the imaging unit 213 from operating (first mode). Note that the first charging mode may be any state in which the electronic device 200 is in a state of charging the battery 210 in a state in which operations other than the charging of the battery 210 are stopped.

  In step S <b> 315, the CPU 105 controls the modulation / demodulation circuit 104 to transmit a seventh command for notifying transmission of the second power to the electronic device 200. When the CPU 105 determines that the modem circuit 104 has received a response signal corresponding to the seventh command, the process proceeds from S315 to S316. If it is determined that the modulation / demodulation circuit 104 has received the response signal corresponding to the seventh command, the CPU 105 measures the time elapsed since the reception of the response signal corresponding to the seventh command. The timer 109 is controlled.

  In S <b> 316, the CPU 105 performs a first power supply control process for controlling the second power transmitted to the electronic device 200. When the first power supply control process is performed by the CPU 105, this flowchart ends.

  In step S <b> 317, the CPU 105 controls the modulation / demodulation circuit 104 to transmit an eighth command for requesting the electronic device 200 to enter the second charging mode to the electronic device 200. When the CPU 105 determines that the modem circuit 104 has received a response signal corresponding to the eighth command, the process proceeds from S317 to S315. Note that the second charging mode is a state in which the electronic device 200 charges the battery 210 while operating the communication unit 212, the imaging unit 213, and the like (second mode). Note that the second charging mode may be any state in which the electronic device 200 can perform the operation of the entire electronic device 200 and the battery 210 is charged.

(First power supply control process)
The first power supply control process performed by the power supply apparatus 100 in S316 of FIG. 3 will be described using the flowchart of FIG.

  In S <b> 401, the CPU 105 controls the modulation / demodulation circuit 104 to transmit the first command to the electronic device 200 in order to request the remaining capacity information of the electronic device 200 as in S <b> 302. When the CPU 105 determines that the modem circuit 104 has received a response signal corresponding to the first command, the process proceeds from S401 to S402. When the CPU 105 determines that the modulation / demodulation circuit 104 has not received a response signal corresponding to the first command, this flowchart ends.

  In S402, the CPU 105 determines whether or not the electronic device 200 is in a chargeable state according to the response signal corresponding to the first command received in S401. When the CPU 105 determines that the error information is included in the response signal corresponding to the first command received in S401, the CPU 105 determines that the electronic device 200 is not in a chargeable state. When the remaining capacity information is included in the response signal corresponding to the first command received in S401, when the CPU 105 determines that the remaining capacity of the battery 210 is fully charged according to the remaining capacity information, the CPU 105 Determines that the electronic device 200 is not in a chargeable state. When the CPU 105 determines that the electronic device 200 is not in a chargeable state (No in S402), the process proceeds from S402 to S406.

  When the remaining capacity information is included in the response signal corresponding to the first command received in S401, when the CPU 105 determines that the remaining capacity of the battery 210 is not fully charged, the CPU 105 charges the electronic device 200. It is determined that it is possible. If the CPU 105 determines that the electronic device 200 is in a chargeable state (Yes in S402), the process proceeds from S402 to S403.

  In step S <b> 403, the CPU 105 sets the power that the power supply apparatus 100 is transmitting to the electronic device 200 from the first power to the second power. The target value of the second power is set by the CPU 105 according to the detection information acquired in S307. The CPU 105 controls the oscillator 101, the power transmission circuit 102, and the matching circuit 103 so as to transmit the second power to the electronic device 200. In this case, the flowchart proceeds from S403 to S404.

  In S404, the CPU 105 determines whether or not the time measured by the timer 109 in S315 in FIG. When the CPU 105 determines that the time measured by the timer 109 has elapsed (Yes in S404), the process proceeds from S404 to S405. When the CPU 105 determines that the time measured by the timer 109 has not elapsed (No in S404), the process returns from S404 to S403.

  In step S <b> 405, the CPU 105 sets the power transmitted from the power supply apparatus 100 to the electronic device 200 from the second power to the first power. The CPU 105 controls the oscillator 101, the power transmission circuit 102, and the matching circuit 103 so as to transmit the first power to the electronic device 200. At this time, the CPU 105 resets the time measured by the timer 109. In this case, the flowchart returns from S405 to S401. In S401, in order for the power supply apparatus 100 to request the remaining capacity information of the electronic device 200 again, in order to transmit the first command to the electronic device 200, the power supply apparatus 100 is not the second power but the first power. Needs to be transmitted to the electronic device 200. Therefore, the CPU 105 causes the power supply apparatus 100 to transmit the first power to the electronic device 200 in the process of S405.

  In step S <b> 406, the CPU 105 controls the modulation / demodulation circuit 104 so as to transmit the ninth command to the electronic device 200 in order to notify that the transmission of the second power is stopped. In this case, the CPU 105 causes the power supply apparatus 100 to transmit the first power to the electronic device 200 when the power supply apparatus 100 transmits the second power to the electronic apparatus 200. When the CPU 105 determines that the modem circuit 104 has received a response signal corresponding to the ninth command, the CPU 105 resets the time measured by the timer 109. In this case, the flowchart proceeds from S406 to S407.

  In step S <b> 407, the CPU 105 determines whether the sixth command has been transmitted in order for the modulation / demodulation circuit 104 to request the electronic device 200 to place the electronic device 200 in the first charging mode. If the CPU 105 determines that the modulation / demodulation circuit 104 has transmitted the sixth command to the electronic device 200 (Yes in S407), the process proceeds from S407 to S408. When the CPU 105 determines that the modulation / demodulation circuit 104 has not transmitted the sixth command to the electronic device 200 (No in S407), the process proceeds from S407 to S409.

  In step S <b> 408, the CPU 105 controls the modulation / demodulation circuit 104 so as to transmit the tenth command for requesting to cancel the sixth command to the electronic device 200. In this case, the CPU 105 transmits the tenth command to the electronic device 200 so that the state of the electronic device 200 becomes the state before receiving the sixth command from the first charging mode. Control. When the CPU 105 determines that the modulation / demodulation circuit 104 has received a response signal corresponding to the tenth command, this flowchart ends.

  In step S409, the CPU 105 determines whether the eighth command has been transmitted in order for the modulation / demodulation circuit 104 to request the electronic device 200 to place the electronic device 200 in the second charging mode. If the CPU 105 determines that the modem circuit 104 has transmitted the eighth command to the electronic device 200 (Yes in S409), the process proceeds from S409 to S410. When the CPU 105 determines that the modulation / demodulation circuit 104 has not transmitted the eighth command to the electronic device 200 (No in S409), this flowchart ends.

  In step S410, the CPU 105 controls the modulation / demodulation circuit 104 so as to transmit an eleventh command for requesting to cancel the eighth command to the electronic device 200. In this case, the CPU 105 transmits the eleventh command to the electronic device 200 so that the state of the electronic device 200 becomes the state before receiving the eighth command from the second charging mode. Control. When the CPU 105 determines that the modulation / demodulation circuit 104 has received a response signal corresponding to the eleventh command, this flowchart ends.

(Second power supply process)
A second power supply process performed by the power supply apparatus 100 when the power supply mode of the power supply apparatus 100 is set to be the second power supply mode will be described with reference to the flowchart of FIG. In this case, the description will be made assuming that the electronic device 200 is selected as the power supply target of the power supply device 100.

  Since the processes of S501 to S503 and S508 to S511 are the same as the processes of S301 to S303 and S304 to S307, description thereof will be omitted.

  In S503, when the CPU 105 determines that the electronic device 200 is in a chargeable state (Yes in S503), the process proceeds from S503 to S504.

  In step S <b> 504, the CPU 105 controls the modulation / demodulation circuit 104 to transmit to the electronic device 200 a twelfth command for acquiring communication information indicating a communication method supported by the communication unit 212 of the electronic device 200. When the CPU 105 determines that the modulation / demodulation circuit 104 has received a response signal corresponding to the twelfth command, the process proceeds from S504 to S505.

  The electronic device 200 that has received the twelfth command transmits communication information to the power supply apparatus 100 as a response signal corresponding to the twelfth command. For example, when the communication unit 212 corresponds to the USB standard, the electronic device 200 transmits communication information indicating that it corresponds to the USB standard to the power supply apparatus 100 as a response signal corresponding to the twelfth command. For example, when the communication unit 212 supports the wireless LAN standard, the electronic device 200 transmits communication information indicating that the communication unit 212 supports the wireless LAN to the power supply apparatus 100 as a response signal corresponding to the twelfth command.

  In step S <b> 505, the CPU 105 sets a communication method for transmitting and receiving video data and audio data to and from the electronic device 200 according to communication information included in the response signal corresponding to the twelfth command. The CPU 105 sets a communication method supported by the communication unit 112 and the communication unit 212, and controls the communication unit 112 to operate according to the set communication method. Further, the CPU 105 controls the modulation / demodulation circuit 104 so as to transmit to the electronic device 200 a thirteenth command for requesting the communication unit 212 of the electronic device 200 to set the communication method set by the communication unit 112. To do. When the CPU 105 determines that the modulation / demodulation circuit 104 has received a response signal corresponding to the thirteenth command, the process proceeds from S505 to S506. When the CPU 105 determines that the modulation / demodulation circuit 104 has not received a response signal corresponding to the thirteenth command, the CPU 105 does not match the communication method corresponding to the communication unit 112 and the communication method corresponding to the communication unit 212. Is determined. In this case, the power supply apparatus 100 cannot transmit / receive video data and audio data via the electronic device 200 and the communication unit 112. In this case, this flowchart ends. In step S505, the CPU 105 transmits a thirteenth command to the electronic device 200 in order to request the communication unit 212 of the electronic device 200 to set the communication method set by the communication unit 112. . However, in S505, the CPU 105 may set the communication unit 212 of the electronic device 200 to a communication method that is compatible with the communication method in which the communication unit 112 is set. Therefore, when the communication unit 212 is set to a communication method that is compatible with the communication method set by the CPU 105 by the communication unit 112, the processing after S506 may be performed. In step S <b> 506, the CPU 105 transmits to the electronic apparatus 200 a fourteenth command for requesting authentication information for authentication of communication between the communication unit 112 using the communication method set in step S <b> 505 and the communication unit 212. The modem circuit 104 is controlled. When the communication method set in S505 is a wireless LAN, the authentication information includes information such as an IP address and an SSID (Service Set Identifier). The information included in the authentication information varies depending on the communication method set in S505.

  When the CPU 105 determines that the modem circuit 104 has received a response signal corresponding to the fourteenth command, the process proceeds from S506 to S507. It is assumed that the response signal corresponding to the fourteenth command includes authentication information.

  In step S507, the CPU 105 controls the modulation / demodulation circuit 104 so as to transmit to the electronic device 200 a fifteenth command for notifying authentication information corresponding to the communication method set in step S505. When the CPU 105 determines that the modem circuit 104 has received a response signal corresponding to the fifteenth command, the process proceeds from S507 to S508.

  In S511, when the CPU 105 determines that the detection information is acquired from the response signal corresponding to the fourth command received by the modulation / demodulation circuit 104, the process proceeds from S511 to S512.

  In S512, the CPU 105 determines whether or not the electronic device 200 can charge the battery 210 by the power transmitted from the power supply apparatus 100 according to the detection information acquired in S511, as in S308. .

  When it is determined by the CPU 105 that the electronic device 200 can charge the battery 210 by the power transmitted from the power supply apparatus 100 (Yes in S512), the process proceeds from S512 to S513. When it is determined by the CPU 105 that the electronic device 200 cannot charge the battery 210 by the power transmitted from the power supply apparatus 100 (No in S512), the process proceeds from S512 to S518.

  In S <b> 513, the CPU 105 supplies power to the entire electronic device 200 while charging the battery 210 in the electronic device 200 according to the detection information acquired in S <b> 511, as in S <b> 313. Determine if you can.

  When it is determined by the CPU 105 that the power supply apparatus 100 can supply power to the entire electronic device 200 while charging the battery 210 to the electronic device 200 (Yes in S513), this flowchart starts from S513. The process proceeds to S514. When it is determined by the CPU 105 that the power supply apparatus 100 cannot supply power to the entire electronic device 200 but the electronic device 200 can charge the battery 210 (No in S513), the flowchart is as follows. , The process proceeds from S513 to S519. Note that the determination in S513 may be performed by the CPU 105 when it is detected that the electronic device 200 is in the power-on state. Therefore, in the case of Yes in S512, when it is detected that the electronic device 200 is in the power-off state, the CPU 105 may perform the process of S519 without performing the process of S513.

  In S514, the CPU 105 controls the modulation / demodulation circuit 104 to transmit the eighth command to the electronic device 200 in order to change the electronic device 200 to the second charging mode, as in S317. When the CPU 105 determines that the modulation / demodulation circuit 104 has received a response signal corresponding to the eighth command, the process proceeds from S514 to S515.

  In step S <b> 515, the CPU 105 controls the modulation / demodulation circuit 104 to transmit a sixteenth command for requesting the communication unit 212 to transmit data to the electronic device 200. When the CPU 105 determines that the modem circuit 104 has received a response signal corresponding to the sixteenth command, the CPU 105 is transmitting data to the identification ID of the electronic device 200 registered in the management table of the RAM 107. Set the flag to indicate. In this case, the CPU 105 further controls the communication unit 112 to receive data transmitted from the electronic device 200.

  In the case where the communication unit 112 has received data transmitted from the electronic device 200, the process proceeds from S515 to S516. Note that the data received from the electronic device 200 when the power supply apparatus 100 transmits the sixteenth command to the electronic device 200 may be video data or audio data. The data received from the electronic device 200 may be video data and audio data that the electronic device 200 has not transmitted to the power supply apparatus 100. Note that when the data that the power supply apparatus 100 receives from the electronic device 200 is data that the electronic device 200 has not transmitted to the power supply apparatus 100, the video that the power supply apparatus 100 has not transmitted to the power supply apparatus 100 from the electronic device 200. Unsent information indicating data and audio data is acquired. The power supply apparatus 100 can select data for requesting transmission to the electronic device 200 using the sixteenth command in accordance with the untransmitted information acquired from the electronic device 200. In this case, data that the power supply apparatus 100 has not received from the electronic device 200 can be captured without performing a special operation.

  In S <b> 516, the CPU 105 controls the modulation / demodulation circuit 104 to transmit the seventh command to the electronic apparatus 200 in order to notify that the second power is transmitted, similarly to S <b> 315. When the CPU 105 determines that the modulation / demodulation circuit 104 has received a response signal corresponding to the seventh command, the process proceeds from S516 to S517. If it is determined that the modulation / demodulation circuit 104 has received the response signal corresponding to the seventh command, the CPU 105 measures the time elapsed since the reception of the response signal corresponding to the seventh command. The timer 109 is controlled.

  In step S517, the CPU 105 performs a second power supply control process for controlling power supply to the electronic device 200. When the second power supply control process is performed by the CPU 105, this flowchart ends.

  In S518, the CPU 105 determines whether or not the power supply apparatus 100 can supply the electronic device 200 with power for the communication unit 212 to transmit data to the power supply apparatus 100 according to the detection information acquired in S511. Determine. When it is determined by the CPU 105 that the communication unit 212 can supply the electronic device 200 with power for transmitting data to the power supply apparatus 100 (Yes in S518), the flowchart of FIG. To S519. When it is determined by the CPU 105 that the communication unit 212 cannot supply power for transmitting data to the power supply apparatus 100 to the electronic device 200 (No in S518), the flowchart of FIG. To S521.

  In S519, the CPU 105 controls the modulation / demodulation circuit 104 to transmit the sixth command to the electronic device 200 in order to change the electronic device 200 to the first charging mode. When the CPU 105 determines that the modem circuit 104 has received a response signal corresponding to the sixth command, the process proceeds from S519 to S520.

  In step S520, the CPU 105 controls the modulation / demodulation circuit 104 so as to transmit to the electronic device 200 a seventeenth command for requesting that the state of the electronic device 200 be set to the communication mode. When the CPU 105 determines that the modem circuit 104 has received a response signal corresponding to the seventeenth command, the process proceeds from S520 to S515. In the communication mode, power for transmitting video data and audio data to the power supply apparatus 100 and power for receiving video data and audio data from the power supply apparatus 100 are supplied to the communication unit 212. It is in a state. When the electronic device 200 is in the communication mode, the electronic device 200 supplies necessary power to the communication unit 212, controls the communication unit 212 to authenticate communication with the communication unit 110, and transmits video data and audio data to the power supply apparatus 100. The communication unit 212 is controlled so as to transmit to the terminal.

  In S521, the CPU 105 determines whether or not the remaining capacity of the battery 210 is equal to or greater than a predetermined value set in the ROM 106, based on the remaining capacity information acquired in S502. This predetermined value may be set in advance in the ROM 106 or may be set in accordance with detection information acquired from the electronic device 200 by the CPU 105. The predetermined value may be a value indicating the remaining capacity of the battery 210 necessary for the electronic device 200 to transmit data to the power supply apparatus 100.

  When the CPU 105 determines that the remaining capacity of the battery 210 is equal to or greater than the predetermined value (Yes in S521), the process proceeds from S521 to S522. When the CPU 105 determines that the remaining capacity of the battery 210 is lower than the predetermined value (No in S521), the process proceeds from S521 to S526.

  In S522, as in S520, the CPU 105 controls the modulation / demodulation circuit 104 to transmit the seventeenth command to the electronic device 200 in order to change the electronic device 200 to the communication mode. When the CPU 105 determines that the modem circuit 104 has received a response signal corresponding to the seventeenth command, the process proceeds from S522 to S523.

  In S523, the CPU 105 controls the modulation / demodulation circuit 104 to transmit the 16th command to the electronic device 200 in order to request the communication unit 212 to transmit data, as in S515. When the CPU 105 determines that the modem circuit 104 has received a response signal corresponding to the sixteenth command, the process proceeds from S523 to S524.

  In step S <b> 524, the CPU 105 sets the electronic device 200 that transmits data to the power supply apparatus 100 via the communication unit 212 to be excluded from the power supply target of the power supply apparatus 100. In this case, the CPU 105 sets a flag indicating invalidity as a power supply target in the identification ID of the electronic device 200 that is registered in the management table of the RAM 107 and has a flag indicating that data transmission is in progress. In this case, the flowchart proceeds from S524 to S525.

  In S525, the CPU 105 performs a transmission confirmation process for confirming whether or not the transmission of data via the communication unit 212 by the electronic device 200 to the power supply apparatus 100 is completed. When the transmission confirmation process is started by the CPU 105, this flowchart ends.

  In S526, the CPU 105 controls the modulation / demodulation circuit 104 to transmit the sixth command to the electronic device 200 in order to change the electronic device 200 to the first charging mode, similarly to S519. When the CPU 105 determines that the modulation / demodulation circuit 104 has received a response signal corresponding to the sixth command, the process proceeds from S526 to S527.

  In S527, the CPU 105 controls the modulation / demodulation circuit 104 to transmit the seventh command to the electronic device 200 in order to notify that the second power is transmitted, as in S315. When the CPU 105 determines that the modulation / demodulation circuit 104 has received a response signal corresponding to the seventh command, the process proceeds from S527 to S401 in FIG. 4 and performs the first power supply control process. When it is determined that the modulation / demodulation circuit 104 has received the response signal corresponding to the seventh command, the CPU 105 counts the time elapsed since the response signal corresponding to the seventh command was received. 109 is controlled.

  When the power supply apparatus 100 transmits the sixteenth command to the electronic device 200, the CPU 105 is transmitted from the electronic device 200 until it is determined that the data transmission by the electronic device 200 via the communication unit 212 is completed. The communication unit 112 is controlled to receive data. Note that the data received from the electronic device 200 by the communication unit 112 is supplied to the recording / reproducing unit 110 and recorded in the recording medium 110a.

(Sending confirmation process)
The transmission confirmation process performed by the power supply apparatus 100 in S525 of FIG. 5 will be described with reference to the flowchart of FIG. In this case, the communication unit 112 performs a process for receiving data transmitted from the communication unit 212 of the electronic device 200.

  In step S <b> 601, the CPU 105 determines whether data is transmitted from the communication unit 212 to the communication unit 112 of the power supply apparatus 100. When data is transmitted from the communication unit 212 to the communication unit 112, the electronic device 200 transmits transmission information indicating the amount of data transmitted from the communication unit 212 to the communication unit 112 in advance to the power supply apparatus 100. For this reason, the CPU 105 determines whether the data received by the communication unit 112 from the communication unit 212 has reached the amount of data indicated by the transmission information, thereby determining whether the data from the communication unit 212 to the communication unit 112 is received. It is determined whether or not transmission is completed. When the CPU 105 determines that the data received by the communication unit 112 from the electronic device 200 has reached the amount of data indicated by the transmission information, the CPU 105 completes transmission of data from the communication unit 212 to the communication unit 112. It is determined that In this case, the CPU 105 determines that transmission of data from the communication unit 212 to the communication unit 112 has been completed, that is, data has not been transmitted from the communication unit 212 to the communication unit 112 of the power supply apparatus 100. In this case (No in S601), the flowchart proceeds from S601 to S602.

  Note that the CPU 105 may inquire of the electronic device 200 whether or not the transmission of data from the communication unit 212 to the communication unit 112 is completed, and receive a response signal from the electronic device 200. In this case, it may be determined whether data is transmitted from the communication unit 212 to the communication unit 112 of the power supply apparatus 100 according to a response signal from the electronic device 200.

  When the CPU 105 determines that the data received by the communication unit 112 from the electronic device 200 has not reached the amount of data indicated in the transmission information, the CPU 105 transfers data from the communication unit 212 to the communication unit 112 of the power supply apparatus 100. Determine that it is being sent. In this case (Yes in S601), the flowchart returns from S601 to S601.

  In step S <b> 602, the CPU 105 sets the electronic device 200 that has been removed from the power supply target of the power supply apparatus 100 in step S <b> 524 of FIG. In this case, the CPU 105 sets a flag indicating that it is valid as a power supply target in the identification ID of the electronic device 200 that is registered in the management table of the RAM 107 and has a flag indicating that data transmission is in progress. Reset the flag indicating that data transmission is in progress. In this case, this flowchart ends.

(Second power supply control process)
The second power supply control process performed in S517 by the power supply apparatus 100 will be described using the flowchart of FIG.

  In S701, the CPU 105 controls the modulation / demodulation circuit 104 to transmit the first command to the electronic device 200 in order to request the remaining capacity information of the electronic device 200, as in S302. When the CPU 105 determines that the modem circuit 104 has received a response signal corresponding to the first command, the process proceeds from S701 to S702. When the CPU 105 determines that the modulation / demodulation circuit 104 has not received a response signal corresponding to the first command, this flowchart ends.

  In S702, the CPU 105 determines whether the electronic device 200 is in a chargeable state according to the response signal corresponding to the first command received in S701, as in S402. If the CPU 105 determines that the electronic device 200 is not in a chargeable state (No in S702), the process proceeds from S702 to S705.

  When the CPU 105 determines that the electronic device 200 is in a chargeable state (Yes in S702), the process proceeds from S702 to S703.

  In step S <b> 703, the CPU 105 sets the power that the power supply apparatus 100 is transmitting to the electronic device 200 from the first power to the second power. The target value of the second power is set by the CPU 105 according to the detection information acquired in S511. The CPU 105 controls the oscillator 101, the power transmission circuit 102, and the matching circuit 103 so as to transmit the second power to the electronic device 200. In this case, in the flowchart, the process proceeds from S703 to S704.

  In step S <b> 704, the CPU 105 determines whether data is transmitted from the communication unit 212 to the communication unit 112 of the power supply apparatus 100 as in step S <b> 601. When the CPU 105 determines that data is not transmitted from the communication unit 212 to the communication unit 112 of the power supply apparatus 100 (No in S704), the process proceeds from S704 to S705. When the CPU 105 determines that data is being transmitted from the communication unit 212 to the communication unit 112 of the power supply apparatus 100 (Yes in S704), the process proceeds from S704 to S712.

  In step S <b> 705, the CPU 105 sets the power transmitted from the power supply apparatus 100 to the electronic device 200 from the second power to the first power. The CPU 105 controls the oscillator 101, the power transmission circuit 102, and the matching circuit 103 so as to transmit the first power to the electronic device 200. At this time, the CPU 105 resets the time measured by the timer 109. In this case, in the flowchart, the process proceeds from S705 to S706. Note that in order for the power supply apparatus 100 to transmit a command for controlling the electronic device 200 to the electronic apparatus 200, the power supply apparatus 100 needs to transmit the first power to the electronic device 200 instead of the second power. is there. Therefore, the CPU 105 causes the power supply apparatus 100 to transmit the first power to the electronic device 200 in the process of S705.

  In step S <b> 706, the CPU 105 controls the modulation / demodulation circuit 104 to transmit an eighteenth command for requesting to release the seventeenth command to the electronic device 200. In this case, the CPU 105 transmits the eighteenth command to the electronic device 200 to control the electronic device 200 so that the state of the electronic device 200 becomes the state before entering the communication mode. When the CPU 105 determines that the modem circuit 104 has received a response signal corresponding to the eighteenth command, the process proceeds from S706 to S707.

  In step S <b> 707, the CPU 105 controls the modulation / demodulation circuit 104 so as to transmit the ninth command to the electronic device 200 in order to notify the electronic device 200 that transmission of the second power is stopped. In this case, the CPU 105 causes the power supply apparatus 100 to transmit the first power to the electronic device 200 when the power supply apparatus 100 transmits the second power to the electronic apparatus 200. When the CPU 105 determines that the modem circuit 104 has received a response signal corresponding to the ninth command, the CPU 105 resets the time measured by the timer 109. In this case, the flowchart proceeds from S707 to S708.

  In step S <b> 708, the CPU 105 determines whether the modem circuit 104 has transmitted a sixth command to the electronic device 200. When the CPU 105 determines that the modulation / demodulation circuit 104 has transmitted the sixth command to the electronic device 200 (Yes in S708), the process proceeds from S708 to S711. When the CPU 105 determines that the modem circuit 104 has not transmitted the sixth command to the electronic device 200 (No in S708), the process proceeds from S708 to S709.

  In step S <b> 709, the CPU 105 determines whether the modem circuit 104 has transmitted an eighth command to the electronic device 200. If the CPU 105 determines that the modem circuit 104 has transmitted the eighth command to the electronic device 200 (Yes in S709), the process proceeds from S709 to S710. When the CPU 105 determines that the modulation / demodulation circuit 104 has not transmitted the eighth command to the electronic device 200 (No in S709), this flowchart ends.

  In step S <b> 710, the CPU 105 controls the modulation / demodulation circuit 104 to transmit the eleventh command to the electronic device 200 in order to cancel the eighth command. In this case, the CPU 105 transmits the eleventh command to the electronic device 200 to control the electronic device 200 so that the state of the electronic device 200 becomes the state before entering the second charging mode. When the CPU 105 determines that the modulation / demodulation circuit 104 has received a response signal corresponding to the eleventh command, this flowchart ends.

  In step S <b> 711, the CPU 105 controls the modulation / demodulation circuit 104 to transmit the tenth command to the electronic device 200 in order to cancel the sixth command. In this case, the CPU 105 transmits the tenth command to the electronic device 200 to control the electronic device 200 so that the state of the electronic device 200 becomes the state before the first charging mode. When the CPU 105 determines that the modulation / demodulation circuit 104 has received a response signal corresponding to the tenth command, this flowchart ends.

  In S712, the CPU 105 sets again the target value of the second power that is currently set so as to decrease by a predetermined value. In this case, the flowchart proceeds from S712 to S713.

  In step S713, the CPU 105 controls the oscillator 101, the power transmission circuit 102, and the matching circuit 103 so that the second power transmitted from the power supply apparatus 100 to the electronic device 200 becomes the target value set in step S712. When the second power set in S712 is transmitted to the electronic device 200, the flowchart proceeds from S713 to S714.

  In S714, the CPU 105 determines whether or not the time measured by the timer 109 in S516 in FIG. When the CPU 105 determines that the time measured by the timer 109 has elapsed (Yes in S714), the process proceeds from S714 to S715. When the CPU 105 determines that the time measured by the timer 109 has not elapsed (No in S714), the process returns from S714 to S713.

  In step S <b> 715, the CPU 105 sets the power transmitted from the power supply apparatus 100 to the electronic device 200 from the second power to the first power. The CPU 105 controls the oscillator 101, the power transmission circuit 102, and the matching circuit 103 so as to transmit the first power to the electronic device 200. At this time, the CPU 105 resets the time measured by the timer 109. In this case, the flowchart returns from S715 to S701. In addition, in order for the power supply apparatus 100 to transmit the first command to the electronic device 200 again in S701, the power supply apparatus 100 needs to transmit the first power to the electronic device 200 instead of the second power. Therefore, the CPU 105 causes the power supply apparatus 100 to transmit the first power to the electronic device 200 in the process of S715.

  The first power supply process in FIG. 3, the first power supply control process in FIG. 4, the second power supply process in FIG. 5, the transmission confirmation process in FIG. 6, and the second power supply control process in FIG. It can implement | achieve by running the computer program memorize | stored in this.

(Command reception processing)
Command reception processing performed by the electronic device 200 will be described with reference to the flowcharts of FIGS. 8, 9, 10 and 11. FIG.

  In step S <b> 801, the CPU 205 determines whether the modem circuit 204 has received the first power from the power supply apparatus 100. When the CPU 205 determines that the modem circuit 204 has not received the first power from the power supply apparatus 100 (No in S801), this flowchart ends. When the CPU 205 determines that the modem circuit 204 has received the first power from the power supply apparatus 100 (Yes in S801), the process proceeds from S801 to S802.

  In step S <b> 802, the CPU 205 determines whether the modem circuit 204 has received a command from the power supply apparatus 100. If the CPU 205 determines that the modem circuit 204 has not received a command from the power supply apparatus 100 (No in S802), the flowchart ends. When the CPU 205 determines that the modem circuit 204 has received a command from the power supply apparatus 100 (Yes in S802), the process proceeds from S802 to S803.

  In step S <b> 803, the CPU 205 controls the modem circuit 204 so that the modem circuit 204 analyzes the command received from the power supply apparatus 100. In this case, the flowchart proceeds from S803 to S804. When the command analysis by the modem circuit 204 is completed, the modem circuit 204 supplies the analysis result to the CPU 205.

  In step S <b> 804, the CPU 205 determines whether an error has been detected from the analysis result supplied from the modem circuit 204. If the CPU 205 determines that an error has been detected from the analysis result supplied from the modem circuit 204 (Yes in S804), the process proceeds from S804 to S805. When the CPU 205 determines that no error is detected from the analysis result supplied from the modem circuit 204 by the CPU 205 (No in S804), the process proceeds from S804 to S806.

  In step S805, the CPU 205 performs error processing to be described later. When the error processing is performed by the CPU 205, this flowchart ends.

  In step S806, the CPU 205 determines whether the command received by the modem circuit 204 is the first command from the analysis result supplied from the modem circuit 204. When the CPU 205 determines that the command received by the modem circuit 204 is not the first command (No in S806), the process proceeds from S806 to S808. When the CPU 205 determines that the command received by the modem circuit 204 is the first command (Yes in S806), the process proceeds from S806 to S807.

  In step S <b> 807, the CPU 205 controls the modulation / demodulation circuit 204 to perform load modulation for transmitting the remaining capacity information recorded in the RAM 207 as a response signal to the first command to the power supply apparatus 100. When the remaining capacity information of the electronic device 200 is transmitted to the power supply apparatus 100, this flowchart ends.

  In step S <b> 808, the CPU 205 determines whether the command received by the modem circuit 204 is the second command from the analysis result supplied from the modem circuit 204. When the CPU 205 determines that the command received by the modem circuit 204 is not the second command (No in S808), the process proceeds from S808 to S810. When the CPU 205 determines that the command received by the modem circuit 204 is the second command (Yes in S808), the process proceeds from S808 to S809.

  In step S809, the CPU 205 performs power supply preparation processing described later according to the second command. When the power supply preparation process is performed by the CPU 205, this flowchart ends.

  In step S810, the CPU 205 determines whether the command received by the modem circuit 204 is the third command from the analysis result supplied from the modem circuit 204. When the CPU 205 determines that the command received by the modem circuit 204 is not the third command (No in S810), the process proceeds from S810 to S813. When the CPU 205 determines that the command received by the modem circuit 204 is the third command (Yes in S810), the process proceeds from S810 to S811.

  In step S811, the CPU 205 controls the electronic device 200 to return the state of the electronic device 200 to the state before receiving the second command from the power supply preparation mode described later. In this case, the flowchart proceeds from S811 to S812.

  In step S <b> 812, the CPU 105 controls the modulation / demodulation circuit 204 to perform load modulation for transmitting a response signal indicating affirmation to the third command to the power supply apparatus 100. When a response signal corresponding to the third command is transmitted to the power supply apparatus 100, this flowchart ends.

  In step S813, the CPU 205 determines whether the command received by the modem circuit 204 is the fourth command from the analysis result supplied from the modem circuit 204. If the CPU 205 determines that the command received by the modem circuit 204 is not the fourth command (No in S813), the process proceeds from S813 to S901 in FIG. When the CPU 205 determines that the command received by the modem circuit 204 is the fourth command (Yes in S813), the process proceeds from S813 to S814.

  In step S <b> 814, the CPU 205 controls the modulation / demodulation circuit 204 to perform load modulation for transmitting the detection information recorded in the RAM 207 as a response signal to the fourth command to the power supply apparatus 100. When the detection information is transmitted to the power supply apparatus 100, this flowchart ends.

  In step S <b> 901, the CPU 205 determines whether the command received by the modem circuit 204 is the sixth command from the analysis result supplied from the modem circuit 204. When the CPU 205 determines that the command received by the modem circuit 204 is not the sixth command (No in S901), the process proceeds from S901 to S904. If the CPU 205 determines that the command received by the modem circuit 204 is the sixth command (Yes in S901), the process proceeds from S901 to S902.

  In step S902, the CPU 205 controls the electronic device 200 to change the state of the electronic device 200 from the current state to the first charging mode. In this case, the flowchart proceeds from S902 to S903. When the electronic device 200 is in the first charging mode, the CPU 205 includes a power receiving antenna 201, a matching circuit 202, a rectifying / smoothing circuit 203, a modem circuit 204, a CPU 205, a ROM 206, a RAM 207, a regulator 208, a charging control unit 209, The supply of electric power is controlled so that each unit other than the timer 211 and the battery 210 is not operated. Note that when the electronic device 200 enters the first charging mode, the CPU 205 includes at least the power receiving antenna 201, the matching circuit 202, the rectifying / smoothing circuit 203, the modem circuit 204, the CPU 205, the ROM 206, the RAM 207, the regulator 208, and the charging control unit 209. In addition, power is supplied to the timer 211 and the battery 210.

  In step S <b> 903, the CPU 205 controls the modem circuit 204 to transmit a response signal indicating affirmation to the sixth command to the power supply apparatus 100. When the response signal with respect to the sixth command is transmitted to the power supply apparatus 100, this flowchart ends.

  In step S <b> 904, the CPU 205 determines whether the command received by the modem circuit 204 is the eighth command from the analysis result supplied from the modem circuit 204. When the CPU 205 determines that the command received by the modem circuit 204 is not the eighth command (No in S904), the process proceeds from S904 to S907. When the CPU 205 determines that the command received by the modem circuit 204 is the eighth command (Yes in S904), the process proceeds from S904 to S905.

  In step S905, the CPU 205 controls the electronic device 200 to change the state of the electronic device 200 from the current state to the second charging mode. In this case, the flowchart proceeds from S905 to S906. When the electronic device 200 enters the second charging mode, the electronic device 200 includes the power receiving antenna 201, the matching circuit 202, the rectifying / smoothing circuit 203, the modem circuit 204, the CPU 205, the ROM 206, the RAM 207, the regulator 208, and the charging control unit. 209, the battery 210, the timer 211, the communication unit 212, and the imaging unit 213 are controlled to supply power to the entire electronic device 200.

  In step S <b> 906, the CPU 205 controls the modulation / demodulation circuit 204 to transmit a response signal indicating affirmation to the eighth command to the power supply apparatus 100. When a response signal to the eighth command is transmitted to the power supply apparatus 100, the present flowchart ends.

  In step S <b> 907, the CPU 205 determines whether the command received by the modem circuit 204 is the seventh command from the analysis result supplied from the modem circuit 204. If the CPU 205 determines that the command received by the modem circuit 204 is not the seventh command (No in S907), the process proceeds from S907 to S909. If the CPU 205 determines that the command received by the modem circuit 204 is the seventh command (Yes in S907), the process proceeds from S907 to S908.

  In step S908, the CPU 205 performs a charging process described later. When the charging process is performed by the CPU 205, this flowchart ends.

  In step S <b> 909, the CPU 205 determines whether the command received by the modem circuit 204 is the ninth command from the analysis result supplied from the modem circuit 204. When the CPU 205 determines that the command received by the modem circuit 204 is not the ninth command (No in S909), the process proceeds from S909 to S1001 in FIG. When the CPU 205 determines that the command received by the modem circuit 204 is the ninth command (Yes in S909), the process proceeds from S909 to S910.

  In step S <b> 910, the CPU 205 controls the charge control unit 209 to stop charging the battery 210. When the charging of the battery 210 is stopped, the process proceeds from S910 to S911.

  In step S <b> 911, the CPU 205 controls the modem circuit 204 to transmit a response signal indicating affirmation to the ninth command to the power supply apparatus 100. When a response signal to the ninth command is transmitted to the power supply apparatus 100, this flowchart ends.

  In step S <b> 1001, the CPU 205 determines whether the command received by the modem circuit 204 is the tenth command from the analysis result supplied from the modem circuit 204. When the CPU 205 determines that the command received by the modem circuit 204 is not the tenth command (No in S1001), the process proceeds from S1001 to S1004. When the CPU 205 determines that the command received by the modem circuit 204 is the tenth command (Yes in S1001), the process proceeds from S1001 to S1002.

  In step S <b> 1002, the CPU 205 controls to change the state of the electronic device 200 from the first charging mode to the state before entering the first charging mode. In this case, the flowchart proceeds from S1002 to S1003.

  In step S <b> 1003, the CPU 205 controls the modem circuit 204 to transmit a response signal indicating affirmation to the tenth command to the power supply apparatus 100. When a response signal to the tenth command is transmitted to the power supply apparatus 100, the flowchart ends.

  In step S <b> 1004, the CPU 205 determines whether the command received by the modem circuit 204 is the eleventh command from the analysis result supplied from the modem circuit 204. If the CPU 205 determines that the command received by the modem circuit 204 is not the eleventh command (No in S1004), the process proceeds from S1004 to S1007. When the CPU 205 determines that the command received by the modem circuit 204 is the eleventh command (Yes in S1004), the process proceeds from S1004 to S1005.

  In step S1005, the CPU 205 controls to change the state of the electronic device 200 from the second charging mode to the state before the second charging mode. In this case, the flowchart proceeds from S1005 to S1006.

  In step S <b> 1006, the CPU 205 controls the modem circuit 204 to transmit a response signal indicating affirmation to the eleventh command to the power supply apparatus 100. When a response signal to the eleventh command is transmitted to the power supply apparatus 100, the present flowchart ends.

  In step S <b> 1007, the CPU 205 determines whether the command received by the modem circuit 204 is the twelfth command from the analysis result supplied from the modem circuit 204. If the CPU 205 determines that the command received by the modem circuit 204 is not the twelfth command (No in S1007), the process proceeds from S1007 to S1009. When the CPU 205 determines that the command received by the modem circuit 204 is the twelfth command (Yes in S1007), the process proceeds from S1007 to S1008.

  In step S <b> 1008, the CPU 205 controls the modem circuit 204 to transmit the communication information recorded in the ROM 206 to the power supply apparatus 100 as a response signal to the twelfth command. When the response signal with respect to the twelfth command is transmitted to the power supply apparatus 100, this flowchart ends.

  In step S <b> 1009, the CPU 205 determines whether the command received by the modem circuit 204 is the fourteenth command from the analysis result supplied from the modem circuit 204. When the CPU 205 determines that the command received by the modem circuit 204 is not the fourteenth command (No in S1009), the process proceeds from S1009 to S1101 in FIG. If the CPU 205 determines that the command received by the modem circuit 204 is the fourteenth command (Yes in S1009), the process proceeds from S1009 to S1010.

  In step S <b> 1010, the CPU 205 controls the modulation / demodulation circuit 204 to transmit the authentication information recorded in the ROM 206 as a response signal to the fourteenth command to the power supply apparatus 100. When a response signal to the fourteenth command is transmitted to the power supply apparatus 100, this flowchart ends.

  In step S <b> 1101, the CPU 205 determines whether the command received by the modem circuit 204 is a seventeenth command from the analysis result supplied from the modem circuit 204. When the CPU 205 determines that the command received by the modem circuit 204 is not the 17th command (No in S1101), the process proceeds from S1101 to S1103. When the CPU 205 determines that the command received by the modem circuit 204 is the 17th command (Yes in S1101), the process proceeds from S1101 to S1102.

  In step S1102, the CPU 205 performs a communication mode change process described later. When the communication mode change process is performed by the CPU 205, this flowchart ends.

  In step S <b> 1103, the CPU 205 determines whether the command received by the modem circuit 204 is the eighteenth command from the analysis result supplied from the modem circuit 204. If the CPU 205 determines that the command received by the modem circuit 204 is not the 18th command (No in S1103), the process proceeds from S1103 to S1106. When the CPU 205 determines that the command received by the modem circuit 204 is the 18th command (Yes in S1103), the process proceeds from S1103 to S1104.

  In step S1104, the CPU 205 controls to change the state of the electronic device 200 from the communication mode to the state before entering the communication mode. In this case, the flowchart proceeds from S1104 to S1105.

  In step S <b> 1105, the CPU 205 controls the modem circuit 204 to transmit a response signal indicating affirmation to the eighteenth command to the power supply apparatus 100. When a response signal to the eighteenth command is transmitted to the power supply apparatus 100, this flowchart ends.

  In step S <b> 1106, the CPU 205 determines whether the command received by the modem circuit 204 is the sixteenth command from the analysis result supplied from the modem circuit 204. When the CPU 205 determines that the command received by the modem circuit 204 is not the 16th command (No in S1106), the process proceeds from S1106 to S1108. If the CPU 205 determines that the command received by the modem circuit 204 is the sixteenth command (Yes in S1106), the process proceeds from S1106 to S1107.

  In step S1107, the CPU 205 performs transmission processing described later. When the transmission processing is performed by the CPU 205, this flowchart ends.

  In step S <b> 1108, the CPU 205 determines whether the command received by the modem circuit 204 is the thirteenth command from the analysis result supplied from the modem circuit 204. If the CPU 205 determines that the command received by the modem circuit 204 is not the thirteenth command (No in S1108), the process proceeds from S1108 to S1110. When the CPU 205 determines that the command received by the modem circuit 204 is the thirteenth command (Yes in S1108), the process proceeds from S1108 to S1109.

  In step S1109, the CPU 205 sets the communication method of the communication unit 212 according to the thirteenth command. In this case, the CPU 205 controls the modem circuit 204 to transmit a response signal indicating affirmation to the thirteenth command to the power supply apparatus 100. When a response signal to the thirteenth command is transmitted to the power supply apparatus 100, this flowchart ends.

  In step S <b> 1110, the CPU 205 performs processing according to the command code included in the analysis result supplied from the modem circuit 204. In this case, this flowchart ends. When the CPU 205 determines that the command received by the modulation / demodulation circuit 204 is the fifth command according to the command code, the CPU 205 performs processing for enabling the invalid power receiving means. In this case, this flowchart ends.

  If the CPU 205 determines that the command received by the modem circuit 204 is the fifteenth command according to the command code, the CPU 205 communicates with the communication unit 112 according to the authentication information included in the fifteenth command. Authenticate to do In this case, this flowchart ends.

(Power supply preparation process)
The power supply preparation process performed in step S809 by the electronic device 200 will be described with reference to the flowchart of FIG.

  In step S1201, the CPU 205 controls the electronic device 200 to change the state of the electronic device 200 from the current state to the power supply preparation mode. In this case, the flowchart proceeds from S1201 to S1202. The power supply preparation mode is a mode for the electronic device 200 to detect detection information according to the power transmitted from the power supply apparatus 100. In this case, the CPU 205 controls the timer 211 to measure the time that has elapsed since the electronic device 200 entered the power supply preparation mode. When the electronic device 200 enters the power supply preparation mode, the electronic device 200 performs processing for receiving power for power supply preparation processing transmitted from the power supply apparatus 100 and processing for detecting detection information.

  In step S <b> 1202, the CPU 205 receives the power for power supply preparation processing transmitted from the power supply apparatus 100 and detects the detection information while matching the circuit 202, the modem circuit 204, the rectifying / smoothing circuit 203, the regulator 208, and the charge control. The unit 209 is controlled. In this case, the flowchart proceeds from S1202 to S1203.

  In step S1203, the CPU 205 determines whether the time measured by the timer 211 has reached the time indicated by the time information included in the second command. When the CPU 205 determines that the time measured by the timer 211 has not reached the time indicated by the time information included in the second command (No in S1203), the process returns from S1203 to S1202. When the CPU 205 determines that the time measured by the timer 211 has reached the time indicated by the time information included in the second command (Yes in S1203), this flowchart ends. When the CPU 205 determines that the time measured by the timer 211 has reached the time indicated by the time information included in the second command, the CPU 205 controls to stop detecting the detection information. In this case, the CPU 205 controls the matching circuit 202, the modulation / demodulation circuit 204, the rectifying / smoothing circuit 203, the regulator 208, and the charge control unit 209 so as to stop detection of the detection information.

(Charging process)
The charging process performed in S908 by the electronic device 200 will be described using the flowchart of FIG.

  In step S <b> 1301, the CPU 205 determines whether the charging control unit 209 can charge the battery 210. If the battery 210 is fully charged, the CPU 205 determines that the charge control unit 209 cannot charge the battery 210. When an AC power source (not shown) is connected to the electronic device 200, the CPU 205 determines that the charging control unit 209 cannot charge the battery 210. When a communication error occurs between the power supply apparatus 100 and the electronic device 200, the CPU 205 determines that the charge control unit 209 cannot charge the battery 210. When the CPU 205 determines that the charging control unit 209 cannot charge the battery 210 (No in S1301), the process proceeds from S1301 to S1309. If the battery 210 is not fully charged, an AC power source (not shown) is not connected to the electronic device 200, and no communication error occurs between the power supply apparatus 100 and the electronic device 200, the CPU 205 Control unit 209 determines that battery 210 can be charged. When the CPU 205 determines that the charging control unit 209 can charge the battery 210 (Yes in S1301), the process proceeds from S1301 to S1302.

  In step S <b> 1302, the CPU 205 determines whether the communication unit 212 is transmitting data to the power supply apparatus 100. If the CPU 205 determines that the communication unit 212 is transmitting data to the power supply apparatus 100 (Yes in S1302), the process proceeds from S1302 to S1303. When the CPU 205 determines that the communication unit 212 is not transmitting data to the power supply apparatus 100 (No in S1302), the process proceeds from S1302 to S1308.

  In step S1303, the CPU 205 controls the communication unit 212 to continue data transmission. In this case, in the flowchart, the process proceeds from S1303 to S1304.

  In step S1304, the CPU 205 controls the charge control unit 209 to start charging the battery 210. When charging of the battery 210 is started, the process proceeds from S1304 to S1305.

  In step S <b> 1305, the CPU 205 controls the modem circuit 204 to transmit a response signal indicating affirmation to the seventh command to the power supply apparatus 100. In this case, the process proceeds from S1305 to S1306.

  In step S <b> 1306, the CPU 205 determines whether the battery 210 is fully charged according to the remaining capacity information detected from the charge control unit 209. If the CPU 205 determines that the battery 210 is fully charged (Yes in S1306), the process proceeds from S1306 to S1307. When the CPU 205 determines that the battery 210 is not fully charged (No in S1306), this flowchart ends while continuing to charge the battery 210. If the CPU 205 determines that the battery 210 is fully charged, the process of S1307 is performed.

  In step S <b> 1307, the CPU 205 controls the charge control unit 209 to stop charging the battery 210. In this case, this flowchart ends.

  In step S <b> 1308, the CPU 205 controls the charging control unit 209 to start charging the battery 210. When the charging of the battery 210 is started, the flowchart proceeds from S1308 to S1305.

  In step S <b> 1309, the CPU 205 controls the modulation / demodulation circuit 204 to transmit the error information recorded in advance in the ROM 206 to the power supply apparatus 100 as a response signal to the seventh command. In this case, this flowchart ends.

(Communication mode change processing)
The communication mode change process performed in step S1102 by the electronic device 200 will be described with reference to the flowchart of FIG.

  In step S1401, the CPU 205 determines whether the state of the electronic device 200 is one of the first charging mode and the second charging mode. When the CPU 205 determines that the state of the electronic device 200 is either the first charging mode or the second charging mode (Yes in S1401), the process proceeds from S1401 to S1402. When the CPU 205 determines that the state of the electronic device 200 is neither the first charging mode nor the second charging mode (No in S1401), the process proceeds from S1401 to S1404.

  In step S1402, the CPU 205 controls the electronic device 200 to change the state of the electronic device 200 to the communication mode. In this case, the flowchart proceeds from S1402 to S1403.

  In step S <b> 1403, the CPU 205 controls the modem circuit 204 to transmit a response signal indicating affirmation to the seventeenth command to the power supply apparatus 100. In this case, this flowchart ends.

  In step S1404, the CPU 205 determines whether the remaining capacity of the battery 210 is equal to or greater than a predetermined value. The predetermined value may be recorded in advance in the ROM 206 or set by the CPU 205, and the remaining capacity of the battery 210 required for the electronic device 200 to transmit data to the power supply apparatus 100. Any threshold may be used.

  If the CPU 205 determines that the remaining capacity of the battery 210 is equal to or greater than the predetermined value (Yes in S1404), the process proceeds from S1404 to S1405. When the CPU 205 determines that the remaining capacity of the battery 210 is not equal to or greater than the predetermined value (No in S1404), the process proceeds from S1404 to S1409.

  In step S1405, the CPU 205 determines whether the electronic device 200 is in a power-on state. When the CPU 205 determines that the state of the electronic device 200 is not the power-on state (No in S1405), the process proceeds from S1405 to S1410. When the CPU 205 determines that the state of the electronic device 200 is the power-on state (Yes in S1405), the process proceeds from S1405 to S1406.

  In step S1406, the CPU 205 controls the electronic device 200 to change the state of the electronic device 200 to the communication mode. In this case, this flowchart proceeds from S1406 to S1407.

  In step S <b> 1407, the CPU 205 controls the modem circuit 204 to transmit a response signal indicating affirmation to the seventeenth command to the power supply apparatus 100. In this case, this flowchart ends.

  In step S1408, the CPU 205 performs a remaining capacity detection process described later. When the remaining capacity detection process is performed by the CPU 205, this flowchart ends.

  In step S <b> 1409, the CPU 205 controls the modulation / demodulation circuit 204 to transmit error information recorded in advance in the ROM 206 to the power supply apparatus 100 as a response signal to the seventeenth command. In this case, this flowchart ends.

  In step S <b> 1410, the CPU 205 controls the regulator 208 to supply the power supplied from the battery 210 to the communication unit 212. In this case, the flowchart proceeds from S1410 to S1406. When transmitting video data captured by the imaging unit 213 to the power supply apparatus 100, the power supplied from the battery 210 is also supplied to the communication unit 212, the recording unit 213 a of the imaging unit 213, and the recording medium 213 b of the imaging unit 213. Thus, the regulator 208 is controlled. In this case, the CPU 205 controls the regulator 208 so that the power supplied from the battery 210 is not supplied to each part of the imaging unit 213 other than the recording unit 213a and the recording medium 213b.

(Transmission process)
The transmission process performed in step S1107 by the electronic device 200 will be described using the flowchart of FIG.

  In step S1501, the CPU 205 determines whether the communication unit 212 can transmit data. When power is not supplied to the communication unit 212 from any of the power supply device 100, the battery 210, and an AC power source (not illustrated), the CPU 205 determines that the communication unit 212 cannot transmit data to the power supply device 100. When the data requested from the power supply apparatus 100 is not stored in the electronic device 200, the CPU 205 determines that the communication unit 212 cannot transmit data to the power supply apparatus 100. When the communication authentication between the communication unit 212 and the communication unit 112 is not completed, the CPU 205 determines that the communication unit 212 cannot transmit data to the power supply apparatus 100.

  When the CPU 205 determines that the communication unit 212 cannot transmit data to the power supply apparatus 100 (No in S1501), the process proceeds from S1501 to S1506.

  Note that power is supplied to the communication unit 212 from either the battery 210 or an AC power supply (not shown), data required from the power supply apparatus 100 is stored in the electronic device 200, and authentication between the communication unit 212 and the communication unit 112 is performed. If completed, the CPU 205 determines that the communication unit 212 can transmit data to the power supply apparatus 100. When the CPU 205 determines that the communication unit 212 can transmit data to the power supply apparatus 100 (Yes in S1501), the process proceeds from S1501 to S1502.

  In step S1502, the CPU 205 controls the communication unit 212 to transmit data to the power supply apparatus 100. In this case, in the flowchart, the process proceeds from S1502 to S1503.

  In step S <b> 1503, the CPU 205 controls the modem circuit 204 to transmit a response signal indicating affirmation to the sixteenth command to the power supply apparatus 100. In this case, in the flowchart, the process proceeds from S1503 to S1504.

  In step S <b> 1504, the CPU 205 determines whether transmission of data to the power supply apparatus 100 by the communication unit 212 has ended. When the CPU 205 determines that the transmission of data to the power supply apparatus 100 by the communication unit 212 has ended (Yes in S1504), the process proceeds from S1504 to S1505. If the CPU 205 determines that the transmission of data to the power supply apparatus 100 by the communication unit 212 has not been completed (No in S1504), this flowchart ends. In this case, the CPU 205 controls the communication unit 212 so as to continuously transmit data to the power supply apparatus 100. Note that if the CPU 205 determines that the transmission of data to the power supply apparatus 100 by the communication unit 212 has ended, the process of S1505 is performed.

  In step S <b> 1505, the CPU 205 controls to change the state of the electronic device 200 from the communication mode to the state before entering the communication mode. In this case, this flowchart ends.

  In step S <b> 1506, the CPU 205 controls the modulation / demodulation circuit 204 to transmit error information recorded in advance in the ROM 206 to the power supply apparatus 100 as a response signal to the sixteenth command. In this case, this flowchart ends.

(Remaining capacity detection processing)
The remaining capacity detection process performed in step S1408 by the electronic device 200 will be described with reference to the flowchart of FIG.

  In step S1601, the CPU 205 determines whether or not the remaining capacity of the battery 210 is greater than or equal to a predetermined value. The predetermined value may be recorded in advance in the ROM 206 or set by the CPU 205, and the remaining capacity of the battery 210 required for the electronic device 200 to transmit data to the power supply apparatus 100. Any threshold may be used.

  If the CPU 205 determines that the remaining capacity of the battery 210 is equal to or greater than the predetermined value (Yes in S1601), the process proceeds from S1601 to S1602. If the CPU 205 determines that the remaining capacity of the battery 210 is not equal to or greater than the predetermined value (No in S1601), the process proceeds from S1601 to S1606.

  In step S <b> 1602, the CPU 205 determines whether the electronic device 200 has been operated so that the electronic device 200 changes from the power-on state to the power-off state. If the CPU 205 determines that the electronic device 200 has been operated so that the electronic device 200 changes from the power-on state to the power-off state (Yes in S1602), the process proceeds from S1602 to S1603. If the CPU 205 determines that the electronic device 200 is not operated so that the electronic device 200 changes from the power-on state to the power-off state (No in S1602), the process proceeds from S1602 to S1604.

  In step S <b> 1603, the CPU 205 controls the regulator 208 so that the electronic device 200 is turned off while the power supplied from the battery 210 is supplied to the communication unit 212. In this case, the flowchart proceeds from S1603 to S1604. When the video data captured by the imaging unit 213 is transmitted to the power supply apparatus 100, the power supplied from the battery 210 is also supplied to the communication unit 212, the recording unit 213 a of the imaging unit 213, and the recording medium 213 b of the imaging unit 213. The regulator 208 is controlled so that the electronic device 200 is in a power-off state while being supplied.

  In this case, the CPU 205 controls the regulator 208 so that the power supplied from the battery 210 is not supplied to each part of the imaging unit 213 other than the recording unit 213a and the recording medium 213b.

  In step S <b> 1604, the CPU 205 controls the communication unit 212 to continuously transmit data to the power supply apparatus 100. In this case, the flowchart proceeds from S1604 to S1605.

  In step S <b> 1605, the CPU 205 determines whether transmission of data to the power supply apparatus 100 by the communication unit 212 has ended. When it is determined by the CPU 205 that the transmission of data to the power supply apparatus 100 by the communication unit 212 has ended (Yes in S1605), this flowchart ends. If the CPU 205 determines that the transmission of data to the power supply apparatus 100 by the communication unit 212 has not ended (No in S1605), the process returns from S1605 to S1601.

  In step S <b> 1606, the CPU 205 controls the modulation / demodulation circuit 204 to transmit error information recorded in advance in the ROM 206 to the power supply apparatus 100 as a response signal to the sixteenth command. In this case, this flowchart ends.

(Error handling)
The error processing performed in step S805 by the electronic device 200 will be described using the flowchart of FIG. Note that the error processing may be performed when the CPU 205 detects that an error has occurred in the electronic device 200 other than the processing in step S805. Note that the error that occurs in the electronic device 200 may be an error that occurs in the electronic device 200 or a communication error that occurs between the power supply apparatus 100 and the electronic device 200. For example, when an abnormal current flows through the power receiving antenna 201, the CPU 205 detects that an error has occurred in the electronic device 200.

  In step S <b> 1701, the CPU 205 determines whether or not the battery 210 is charged by the charge control unit 209. When the CPU 205 determines that the battery 210 is being charged (Yes in S1701), the process proceeds from S1701 to S1702. When the CPU 205 determines that the battery 210 is not charged (NO in S1701), the process proceeds from S1701 to S1703.

  In step S <b> 1702, the CPU 205 controls the charge control unit 209 to stop charging the battery 210. Further, when the state of the electronic device 200 is the first charging mode, the CPU 205 returns the state of the electronic device 200 to the state before entering the first charging mode. In addition, when the state of the electronic device 200 is the second charging mode, the CPU 205 returns the state of the electronic device 200 to the state before entering the second charging mode. In this case, the flowchart proceeds from S1702 to S1703.

  In step S <b> 1703, the CPU 205 determines whether video data or audio data is being transmitted to the power supply apparatus 100 via the communication unit 212. If the CPU 205 determines that the communication unit 212 is transmitting video data or audio data to the power supply apparatus 100 (Yes in S1703), the process proceeds from S1703 to S1704. When the CPU 205 determines that the communication unit 212 has not transmitted video data or audio data to the power supply apparatus 100 (No in S1703), the process proceeds from S1703 to S1705.

  In step S <b> 1704, the CPU 205 controls the communication unit 212 to stop transmission of video data and audio data to the power supply apparatus 100 by the communication unit 212. Further, when the state of the electronic device 200 is the communication mode, the CPU 205 controls the state of the electronic device 200 to return to the state before entering the communication mode. In this case, the flowchart proceeds from S1704 to S1705.

  In step S1705, the CPU 205 determines whether the modem circuit 204 has received a command. When the CPU 205 determines that the modem circuit 204 has not received a command (No in S1705), the flowchart ends. If the CPU 205 determines that the modem circuit 204 has received a command (Yes in S1705), the process proceeds from S1705 to S1706.

  In step S <b> 1706, the CPU 205 controls the modulation / demodulation circuit 204 to perform load modulation for transmitting the error information recorded in advance in the ROM 206 as a response signal to the command received by the modulation / demodulation circuit 204 to the power supply apparatus 100. When the error information is transmitted to the power supply apparatus 100, this flowchart ends.

  In step S <b> 1706, the CPU 205 transmits error information to the power supply apparatus 100 as a response signal to the command received by the modem circuit 204. However, the present invention is not limited to this, and when the command received by the modem circuit 204 is a specific command, the CPU 205 may transmit error information to the power supply apparatus 100 as a response signal to the specific command. The specific command is, for example, the first command.

  The command reception process of FIGS. 7 to 11, the power supply preparation process of FIG. 12, the charging process of FIG. 13 and the communication mode change process of FIG. 14 are realized by the CPU 205 executing a computer program stored in the ROM 206. Can do. Further, the transmission process in FIG. 15, the remaining capacity detection process in FIG. 16, and the error process in FIG. 17 can be realized by the CPU 205 executing a computer program stored in the ROM 206.

  As described above, the power supply apparatus 100 according to the first embodiment uses the power transmitted from the power supply apparatus 100 to the electronic device 200 before the power for charging the battery 210 is transmitted to the electronic apparatus 200. Whether or not can be operated is determined. Thereby, when the electronic device 200 can operate the entire electronic device 200 with the electric power transmitted from the power supply device 100, the power supply device 100 causes the electronic device 200 to perform charging in an appropriate state. Can do. In this case, the power supply apparatus 100 can set the electronic device 200 to a mode for operating the entire electronic device 200 including the communication unit 212 and the imaging unit 213 while the electronic device 200 charges the battery 210.

  In addition, when the electronic device 200 can only charge the battery 210 with the power transmitted from the power supply device 100, the power supply device 100 may cause the electronic device 200 to perform charging in an appropriate state. it can. In this case, the power supply apparatus 100 can set the electronic device 200 to a mode for charging the battery 210 while the electronic device 200 stops the operations of the communication unit 212 and the imaging unit 213.

  Furthermore, the power supply device 100 according to the first embodiment uses the detection information detected by the electronic device 200 to determine whether the electronic device 200 can operate the entire electronic device 200 with the power transmitted from the power supply device 100. Judgment was made accordingly.

  Thus, even when the distance between the power supply apparatus 100 and the electronic device 200 or the direction between the power supply antenna 108 and the power reception antenna 201 changes, the power supply apparatus 100 can detect the electronic information based on the detection information acquired from the electronic device 200. The power transmitted to the device 200 can be adjusted. Therefore, the power supply apparatus 100 can cause the electronic device 200 to perform appropriate charging.

  Further, when the power supply apparatus 100 requests the electronic device 200 to transmit data, the power supply apparatus 100 uses the power transmitted from the power supply apparatus 100 to the communication unit 212 before instructing the electronic device 200 to transmit data. It was determined whether or not it could be operated. Thus, the power supply apparatus 100 can receive data from the electronic device 200 after confirming that the communication unit 212 can be operated by the power transmitted from the power supply apparatus 100.

  Furthermore, when the power supply apparatus 100 cannot operate the communication unit 212 with the power transmitted from the power supply apparatus 100, whether or not the remaining capacity of the battery 210 is sufficient to transmit data. Judgment was made. In this case, the power supply apparatus 100 can receive data from the electronic device 200 after confirming that the remaining capacity of the battery 210 is sufficient to transmit data.

  Therefore, in this case, the power supply apparatus 100 can prevent transmission of data from the electronic device 200 from being interrupted when the remaining capacity of the battery 210 decreases.

  In addition, when the electronic device 200 according to the first embodiment requests data transmission from the power supply apparatus 100, the electronic device 200 operates the data transmission unit even when the electronic device 200 is in a power-off state. Was made to send. Accordingly, the electronic device 200 can transmit data to the power supply apparatus 100 without the user transmitting an operation for transmitting data to the power supply apparatus 100 to the electronic apparatus 200.

  Furthermore, when the transmission of data to the power supply apparatus 100 is completed, the electronic device 200 returns to the state before the data transmission. For this reason, when the state before the data transmission of the electronic device 200 is the power-off state, the user does not need to perform an operation of turning off the power to the electronic device 200 after the data transmission is completed. Operability can be improved.

(Other examples)
The power supply apparatus 100 according to the present invention is not limited to the power supply apparatus 100 described in the first embodiment. Further, the electronic device 200 according to the present invention is not limited to the electronic device 200 described in the first embodiment. For example, the power supply apparatus 100 and the electronic device 200 according to the present invention can be realized by a system including a plurality of apparatuses.

  The various processes and functions described in the first embodiment can also be realized by a computer program. In this case, the computer program according to the present invention can be executed by a computer (including a CPU and the like), and realizes various functions described in the first embodiment.

  Needless to say, the computer program according to the present invention may realize various processes and functions described in the first embodiment by using an OS (Operating System) running on the computer.

  The computer program according to the present invention is read from a computer-readable recording medium and executed by the computer. As the computer-readable recording medium, a hard disk device, an optical disk, a CD-ROM, a CD-R, a memory card, a ROM, or the like can be used. The computer program according to the present invention may be provided from an external device to a computer via a communication interface and executed by the computer.

100 power supply device 200 electronic device

Claims (6)

A power supply device that transmits power to an electronic device equipped with a battery,
The power supply apparatus includes: a first communication unit that transmits power to the electronic device in a contactless manner;
Second communication means for receiving data transmitted from the electronic device;
First determination means for determining whether or not the electronic device can transmit the data to the power supply device according to the power transmitted by the first communication means;
Second determination means for determining whether or not the electronic device can charge the battery according to the power transmitted by the first communication means;
A power supply apparatus comprising: a control unit that controls a state of the electronic device according to the first determination unit and the second determination unit.   According to the power transmitted by the first communication means, it is determined that the electronic device cannot transmit the data to the power supply apparatus, and according to the power transmitted by the first communication means. When it is determined that the electronic device can charge the battery, the control unit changes to the first mode for charging the battery without transmitting data to the power supply apparatus. The power supply apparatus according to claim 1, wherein a state of the electronic apparatus is controlled.   According to the power transmitted by the first communication means, it is determined that the electronic device can transmit the data to the power supply apparatus, and according to the power transmitted by the first communication means. When it is determined that the electronic device can charge the battery, the control means is in a state in which data can be transmitted to the power supply device and the second mode for charging the battery. The power supply apparatus according to claim 1, wherein the state of the electronic device is controlled to be changed to   The power supply apparatus controls the first communication unit so as to control power to be transmitted to the electronic device according to the first determination unit and the second determination unit. The power feeding device according to any one of 1 to 3.   The power feeding apparatus according to claim 1, wherein the power feeding apparatus corresponds to electromagnetic field resonance.   The data transmitted from the previous electronic device includes at least one of video data and audio data not received by the second communication unit. Power supply device.

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