JP2006141170A - Power supply system and transmission device and receiving device for use in the system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply system that can feed power to different kinds of receiving apparatuses by using one and the same transmission device, and can be saved in space. <P>SOLUTION: A common cradle 4 is equipped with a transmission module including a coil inside and fed with a commercial voltage, and a PDA 3 is equipped with a receiving module including a coil inside. By placing the PDA 3 on the common cradle 4, magnetic coupling is generated between the coil in the PDA 3 and the coil in the cradle 4, voltages are induced at both ends of the coil in the PDA 3 on the basis of the commercial voltage fed to the common cradle 4, and power is fed to the PDA 3. At this time, data transmission can be performed between a PC 2 and the PDA by making the common cradle 4 communicable with the PC 2 in terms of data. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a power supply system that supplies power to an electronic device, and more particularly to a power supply system that supplies power to a mobile electronic device such as a mobile phone, a notebook computer, a digital camera, and an electronic toy. The present invention also relates to a power transmission device and a power reception device used in the power supply system.

  Examples of conventional power supply systems for mobile electronic devices are shown in FIGS. First, FIG. 18 is an external view showing an external appearance of a mobile phone equipped with a conventional power supply system and a terminal contact type charger (AC adapter) of the mobile phone. In FIG. 18, reference numeral 901 denotes a mobile phone, and 902 denotes a holder of a terminal contact type dedicated charger (AC adapter) for charging a storage battery built in the mobile phone 901. An AC adapter 903 (integrated with an AC plug) and a cord 904 are attached to the holder 902 of the AC adapter. By inserting the AC plug 903 (integrated with an AC plug) into an outlet provided on a wall surface or the like, commercial power is supplied. (AC 100 V) is supplied to the AC adapter 903. Then, the AC adapter 903 converts the supplied AC 100 V into a DC voltage used for charging the storage battery of the mobile phone 901, and passes the cord 904, the AC adapter holder 902, and the power receiving electrode in contact with the power receiving electrode of the mobile phone 901. Then, the storage battery of the mobile phone 901 is charged with this DC voltage. Further, this DC voltage can be directly used as a driving power source for the mobile phone 901.

  Next, FIG. 19 is an external view showing the external appearance of a mobile device equipped with another conventional power supply system and a dedicated charger (AC adapter) for the mobile device. In FIG. 19, 911 indicates a mobile device, and 912 indicates a dedicated charger (AC adapter) for charging a storage battery built in the mobile device 911. The AC adapter 912 is attached with cords 913 and 914 and an AC plug 915. By inserting the AC plug 915 into an outlet provided on a wall surface or the like, commercial power (AC100V) is supplied to the AC adapter 912 via the cord 914. Is done. Then, the AC adapter 912 converts the supplied AC 100V into a DC voltage used for charging the storage battery of the mobile device 911, supplies the DC voltage to the mobile device 911 via the cord 913, and stores the built-in storage battery. Charge. Further, this DC voltage can be directly used as a driving power source for the mobile device 911.

  Next, FIG. 20 is an external view showing the external appearance of a shaver equipped with another conventional power supply system and a non-contact dedicated charger (AC adapter) of the shaver. 20, 921 indicates a shaver, and 922 indicates a non-contact type dedicated charger (AC adapter) for charging a storage battery built in the shaver 921. A cord 923 and an AC plug 924 are attached to the AC adapter 922. By inserting the AC plug 924 into an outlet provided on a wall surface or the like, commercial power (AC100V) is supplied to the AC adapter 922 via the cord 923. The The AC adapter 922 once converts the supplied AC 100 V into a DC voltage and then switches to supply a DC voltage used for charging to the storage battery of the shaver 921 by a non-contact power supply method using magnetic coupling. Further, this DC voltage can be directly used as a driving power source for the shaver 921.

In addition, the secondary coil is disposed at the bottom of the main body, the primary coil is disposed below the main body mounting portion of the charger, and the main body is placed on the main body mounting portion of the charger. In a non-contact charging apparatus in which a primary coil disposed under the subordinate and a secondary coil disposed at the bottom of the main body are magnetically coupled to charge a storage battery in the main body, the housing of the main body includes the secondary coil. A plurality of housing parts divided by a longitudinal plane are combined, and among the plurality of housing parts, one housing part has a bottom wall continuously formed on the outer peripheral wall thereof, and 2 on the inner surface of the bottom wall. There is a non-contact charging device in which a secondary coil is provided and the outer surface of the bottom wall serves as a contact surface with the main body mounting portion of the charger during charging (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 2001-16789

  However, as shown in FIGS. 18 to 20, charging each electronic device such as the cellular phone 901, the notebook computer 911, and the shaver 921 requires a dedicated AC adapter for each electronic device. Since the AC adapters cannot be used, that is, the AC adapters are not compatible with each other, there is a problem that many AC adapters and cords for connecting the AC adapters to a commercial power supply are overflowing in the home.

  Moreover, in the prior art described in Patent Document 1, there is no fear that a step is generated between housing parts joined at the bottom of the housing, and the distance between the primary coil and the secondary coil can be kept constant. Therefore, although a stable charging current can be supplied to the electronic device of the main body, the type of electronic device that can be charged by the non-contact charging device is only one predetermined type, and a plurality of types of electronic devices can be charged. There was a problem that you can't.

  In view of the above points, an object of the present invention is to provide a power supply system that can supply power to different types of power receiving devices with the same power transmission device and can save space. Another object of the present invention is to provide a power transmission device and a power reception device used in the power supply system.

  In order to achieve the above object, a power supply system of the present invention is a power supply system that supplies power in a non-contact manner from a power transmission device to a power reception device, and includes a primary coil and an input DC voltage. A power transmission device having a primary side circuit for applying a pulse voltage to the primary side coil, a secondary side coil magnetically coupled to the primary side coil, and induction induced in the secondary side coil A power receiving device having a secondary circuit that rectifies and smoothes the voltage, and the power transmission device includes a power adjustment unit that adjusts the transmission power according to the amount of power that can be received by the power reception device. In addition, it is configured to be able to transmit and receive electronic information by being electrically connected to a PC by wire or wirelessly, and the electronic information is composed of the primary side coil and the secondary side coil. Through the above Characterized in that it is a possible transmission between said power receiving device and collector.

  Also, at this time, the power transmission device periodically transmits a carrier wave to the primary side coil, and the primary side coil receives an information signal modulated and supplied from the power reception device in response to the carrier wave. A first demodulator that receives and demodulates the signal from the receiver, wherein the power receiving device detects the carrier transmitted to the secondary coil, and the carrier detected by the carrier detector A clock extraction unit for extracting a clock signal required for modulation; and the secondary side coil that modulates the carrier wave based on the information signal using the clock signal when the carrier wave detection unit detects the carrier wave. A first modulation unit that transmits the signal via the first modulation unit, and the power adjustment unit may adjust transmission power based on an information signal demodulated by the first demodulation unit.

  Further, when electronic information is given from the PC, the power transmission device performs a predetermined modulation process in response to the carrier wave based on the electronic information and transmits it to the receiving device via the primary coil. A second modulation unit configured to obtain the electronic information by performing a predetermined demodulation process on the electrical signal provided from the second modulation unit via the secondary coil. A configuration including a demodulator may be used.

  In addition, the power receiving device includes a rechargeable secondary battery, and has a charge control unit that can recognize a charge state of the secondary battery, and the information signal is the secondary battery recognized by the charge control unit. The power transmission device confirms the state of charge by the first demodulator demodulating the modulated information signal given to the power transmission device, and the state of charge is fully charged. In the state, a full charge determination unit that determines to stop power transmission to the power receiving apparatus may be provided.

  The information signal includes corresponding device information indicating that the power receiving device is a device that can receive power from the power transmitting device, and the power transmitting device receives the modulated information signal provided to the power transmitting device. If the corresponding device information can be acquired by the first demodulator, the power receiving device transmits power. If the corresponding device information cannot be acquired, the power receiving device does not transmit power. The power transmission availability determination unit that performs the determination may be configured as described above.

  In addition, the power transmission device includes a carrier wave oscillating unit that periodically applies a carrier wave to the primary coil, and performs a predetermined modulation process in response to the carrier wave based on an electric signal supplied from the PC. A modulation signal is applied to the primary coil, and the power receiving device receives an electric signal based on the modulation signal induced in the secondary coil via the magnetic coupling and demodulates the electric signal. 2 demodulating units, and the electronic information may be provided to the power receiving device based on a demodulated signal obtained by demodulating the second demodulating unit.

  In addition, the power receiving device includes a rechargeable secondary battery, and has a charge control unit that can recognize a charge state of the secondary battery, and the information signal is the secondary battery recognized by the charge control unit. The power transmission device confirms the charge state by the first demodulation unit demodulating the modulated information signal given to the power transmission device, and according to the charge state An electronic information transmission determination unit that determines whether to transmit the electronic information to the power receiving apparatus may be provided.

  Further, the electronic information transmission determination unit may determine whether to transmit the electronic information to the power receiving device based on the capacity of the electronic information in addition to the state of charge.

  The power transmission device includes a light emitting diode that emits light based on a predetermined signal, and the light emitting diode is formed by the primary coil and the secondary coil when the power receiving device is brought close to the power transmission device. A range in which transmission efficiency of transmission power transmitted between the primary side coil and the secondary side coil by coupling is greater than or equal to a predetermined ratio or exceeds a predetermined ratio may be emitted on the power transmission device.

  The power transmission device includes a plurality of the primary side coils, and includes a first coil selection unit that selects one of the plurality of primary side coils, and the power reception device includes: A voltage measurement unit that measures a voltage induced at both ends of the secondary coil by magnetic coupling formed by the primary coil and the secondary coil selected by the first coil selection unit; The primary coil and the secondary coil selected by the first coil selection unit when the voltage measured by the voltage measurement unit is greater than or equal to a predetermined value or exceeds a predetermined value are formed. A voltage induced at both ends of the secondary coil by magnetic coupling may be applied to the power receiving device.

  The power receiving device includes a plurality of the secondary side coils, and further includes a second coil selection unit that selects one of the plurality of secondary side coils, and the voltage measurement unit includes: The primary side coil selected by the first coil selection unit and the secondary side coil selected by the second coil selection unit when the measured voltage is greater than or equal to a predetermined value or exceeds a predetermined value. The voltage induced at both ends of the secondary coil selected by the second coil selection unit by the magnetic coupling formed in the above may be applied to the power receiving device.

  The direct current voltage may be obtained by rectifying and smoothing a commercial voltage input to the power transmission device. The power transmission device includes a battery capable of storing electric charge in the power transmission device, and the direct current The voltage may be configured to use the output voltage from the battery. Further, the battery is constituted by a rechargeable secondary battery, and a commercial voltage is inputted to the power transmission device, and a DC voltage obtained by rectifying and smoothing the inputted commercial voltage is charged to the battery. It does not matter as a configuration.

  Further, for example, a cradle having at least one power transmission device therein, a first electronic device having at least one power receiving device inside, and the first electronic device are electrically connected to each other by wire or wirelessly. And a PC capable of transmitting and receiving electronic information. By bringing the first electronic device close to the cradle, power is supplied from the cradle to the first electronic device. In addition, the electronic information can be transmitted between the PC and the first electronic device.

  In addition, for example, a showcase in which at least one power transmission device is incorporated in a top plate, a first electronic device having at least one power receiving device therein, and the first electronic device electrically or wiredly or wirelessly And a PC capable of transmitting and receiving electronic information by being connected to each other, and by bringing the first electronic device close to the showcase, from the showcase to the first electronic device Power can be supplied, and electronic information can be transmitted between the PC and the first electronic device.

  In addition, for example, a mobile base having a bookshelf structure in which at least one power transmission device is incorporated in a side plate, a mobile device having at least one power reception device therein, and the mobile base electrically or wiredly or wirelessly And a PC capable of transmitting and receiving electronic information by being connected to each other, and by installing the mobile device close to the side plate, power is supplied from the side plate to the mobile device. In addition, the electronic information can be transmitted between the PC and the mobile device.

  In addition, for example, an attache case in which at least one power transmission device is incorporated in a side plate, a mobile device having at least one power reception device therein, and an electronic connection between the attache case and wired or wireless A PC capable of transmitting and receiving information, and by installing the mobile device close to the side plate, power is supplied from the side plate to the mobile device, and the PC and the Electronic information can be transmitted to and from the mobile device.

  In addition, for example, a mouse pad in which at least one power transmitting device is incorporated, a cordless mouse having at least one power receiving device therein, and the mouse pad are electrically connected by wire or wirelessly. A PC capable of transmitting and receiving electronic information, and by installing the cordless mouse close to the mouse pad, power is supplied from the mouse pad to the cordless mouse, and the PC and Electronic information can be transmitted to and from the cordless mouse. At this time, the cordless mouse may include a storage capable of storing information, and the storage may store the electronic information provided from the PC.

  Further, for example, a power supply pad in which at least one power transmission device is incorporated, an electric slipper having at least one power reception device therein, and the power supply pad are electrically connected by wire or wirelessly. And a PC capable of transmitting and receiving electronic information. By installing the electric slipper close to the power supply pad, power is supplied from the power supply pad to the electric slipper. The electronic information can be transmitted between the PC and the electric slipper. At this time, the electric slipper includes a heater to be heated, a heating control unit that controls heating of the heater, a temperature sensor that measures the temperature of the heater, and a storage that stores electronic information transmitted from the PC. The heating control unit may control the heating of the heater based on the electronic information stored in the storage and the temperature of the heater measured by the temperature sensor.

  Also, for example, a narration terminal in which at least one power transmission device is incorporated, an installation spot in which at least one power reception device is provided and the narration terminal is installed, and the installation spot and wired or wireless And a PC capable of transmitting and receiving electronic information by being electrically connected, and by installing the narration terminal at a predetermined position of the installation spot, power is supplied from the installation spot to the narration terminal. And electronic information can be transmitted between the PC and the narration terminal. At this time, the narration terminal includes a reproduction circuit that reproduces predetermined information and a storage that stores electronic information sent from the PC, and the reproduction circuit reads the electronic information stored in the storage. It may be configured to reproduce.

  Further, for example, a cradle in which at least one power transmission device is incorporated, a karaoke remote control having at least one power receiving device therein, and a karaoke remote control electrically connected to the karaoke remote control by wire or wirelessly. A PC capable of transmitting and receiving information, and by bringing the karaoke remote control close to the cradle, power is supplied from the cradle to the karaoke remote control, and between the PC and the karaoke remote control. Thus, the electronic information can be transmitted. At this time, the karaoke remote controller includes a display unit that reads and displays information, and a storage that stores electronic information transmitted from the PC, and the PC stores all karaoke information in a database structure. The karaoke information acquired from the information server by the PC via the telecommunication line is transmitted to the karaoke remote controller from the PC. The transmitted karaoke information may be stored in the storage, and the display unit may read and display the karaoke information stored in the storage.

  Moreover, the power transmission device of the present invention is characterized in that power is supplied to the power receiving device adjacent thereto. Furthermore, the power receiving device of the present invention is characterized in that electric power is supplied from the power transmission device by being brought close to the power transmission device.

  According to the power supply system of the present invention, electric power is supplied by placing an electronic device such as a PDA or a mobile phone including the power receiving device of the present invention on a shared cradle or the like including the power transmitting device of the present invention. Therefore, it is not necessary to prepare a separate AC adapter for each electronic device. In addition, since the shared cradle including the power transmission device of the present invention has a configuration capable of data communication with a PC, if the mounted electronic device is configured to be able to perform data communication, it is in a state of being placed on the shared cradle. Since data can be transmitted and received between the electronic device and the PC as it is, convenience is improved. Furthermore, since the power transmission device of the present invention is incorporated not only in the shared cradle but also in any article such as a showcase or a mouse pad, an electronic device incorporating the power reception device of the present invention can receive power supply from the article. Excellent in versatility.

  Further, the shared cradle is configured to include a plurality of power transmission devices of the present invention, and by placing electronic devices including power receiving devices such as a plurality of PDAs on the shared cradle, a plurality of electronic devices can be simultaneously used. Electric power can be supplied, and space saving can be realized.

  In addition, the power transmission device of the present invention allows the user to recognize the area where the optimum power can be supplied to the power receiving device included in the mounted electronic device by causing the light emitting diode to emit light. Even in the case where the electronic device can be mounted in a wide area as in the case, a state in which power transmission efficiency is high can be realized by mounting the electronic device in the area where the light emitting diode emits light.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a conceptual diagram of a power supply system in the present embodiment.

  A power supply system 1 shown in FIG. 1 has a configuration in which data communication can be performed by connecting a PDA 3, a shared cradle 4 that supplies power to the PDA 3, and a wired or wirelessly connected to the shared cradle 4 (line 8). It is comprised with PC2. The shared cradle 4 is provided with a cord 6, an AC plug 7 at the tip of the cord 6, and commercial power is supplied via the cord 6 by inserting the AC plug 7 into an AC outlet insertion port. It is. Further, the shared cradle 4 includes an LED display unit 5, and the user can visually recognize the state of the shared cradle 4 as described later according to the display color of the LED display unit 5. It has become.

  In FIG. 1, when the AC plug 7 is inserted into an AC outlet insertion port (not shown) and the PDA 3 is placed at a predetermined position on the shared cradle 4, commercial voltage is applied to the shared cradle 4 via the cord 6. . As will be described later, the PDA 3 and the common cradle 4 are each provided with a coil. When a commercial voltage is applied to the common cradle 4, the coil in the common cradle 4 and the coil in the PDA 3 are magnetically coupled. Thus, a voltage is induced at both ends of the coil in the PDA, and electric power is supplied to the PDA by this induced voltage. Hereinafter, the internal circuit of the shared cradle 4 on the power supply side is referred to as a power transmission module 10, and the internal circuit of the PDA 3 on the power supply side is referred to as a power reception module 40. At this time, each of the power transmission module 10 and the power reception module 40 includes the above-described coils.

  When the shared cradle 4 is configured to be able to perform data communication with the PC 2 wirelessly, the PC 2 includes a transmission unit (for example, a transmission antenna) that transmits a predetermined signal, and the shared cradle 4 is transmitted from the transmission unit. A configuration may be adopted in which a receiving unit (or receiving antenna) that receives the received signal is provided. If the shared cradle 4 is configured to perform wired data communication with the PC 2, the PC 2 and the shared cradle 4 may be configured to be electrically connected via a cable.

  A mechanism for supplying power from the shared cradle 4 to the PDA 3 will be described below with reference to the drawings. FIG. 2 is a block diagram illustrating an electrical configuration of the power transmission module 10 included in the shared cradle 4 illustrated in FIG. 1 and the power reception module 40 included in the PDA. The same components as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.

  The power transmission module 10 is supplied with a commercial voltage, rectifies the supplied commercial voltage and outputs a DC voltage, a smoothing circuit 14 that smoothes the DC voltage output from the rectifier circuit 13, and a smoothing circuit And a switching circuit 15 that receives the smoothed DC voltage output from the circuit 14 and generates and outputs a predetermined switching pulse voltage.

  In addition, the power transmission module 10 receives the switching pulse output from the switching circuit 15, transforms it to a predetermined voltage and outputs it, and rectifies the AC voltage output from the transformer 16 and outputs a DC voltage. And a smoothing circuit 18 that smoothes the DC voltage output from the rectifier circuit 17. The voltage Vcc output from the smoothing circuit 18 is used as a control drive power source for each circuit included in the power transmission module 10 described later.

  The power transmission module 10 is provided with a switching pulse voltage output from the switching circuit 15 and includes a secondary coil 41 included in a power receiving module 40 described later and a primary coil 19 constituting a transformer. The primary coil 19 is configured such that a switching pulse voltage is supplied via any one of the switching element 21, the switching element 22, and the switching element 23, and the secondary coil 41 is selected by the selected switching element. In this configuration, the transformation ratio of the transformer 30 is changed. The power transmission module 10 includes a power switching circuit 24, and on / off switching of the switching element 21, the switching element 22, and the switching element 23 is controlled based on a control signal from the power switching circuit 24. In FIG. 2, the number of switching elements that determine the transformation ratio of the transformer 30 composed of the primary side coil 19 and the secondary side coil 41 is three, that is, the switching element 21, the switching element 22, and the switching element 23. Although it is configured, this number is not limited to three.

  The power transmission module 10 includes a light emitting diode 25 and a light emitting diode 26 that emit light based on a predetermined signal. Among these, the light emitting diode 25 is supplied with a DC voltage Vcc through a switching element 29 and a resistor 27, and the light emitting diode 26 is supplied with a DC voltage Vcc through a switching element 31 and a resistor 28. Further, the power transmission module 10 includes an LED display circuit 32, and on / off switching of the switching element 29 and the switching 31 is controlled based on a signal from the LED display circuit 32.

  The power transmission module 10 includes a carrier wave oscillation circuit 33 that generates a predetermined carrier wave, a modulation / demodulation circuit 34 that modulates a data signal from the PC 2 and demodulates a modulation signal given from the PDA 3, and is included in the voltage from the primary coil. A demodulation circuit 35 that demodulates the modulated signal, a power transmission availability determination circuit 36 that performs each determination process based on information included in the signal demodulated by the demodulation circuit 35, a power amount determination circuit 37, and a full charge determination circuit 38 are provided.

  Furthermore, the power transmission module 10 includes a conversion unit 64, and signals are transmitted and received between the shared cradle 4 and the PC 2 via the conversion unit 64. The conversion unit 64 converts the signal given from the power transmission module 10 into a format that can be read by the PC 2 and sends it to an output interface (not shown), and is also given a signal converted from the output interface to the PC 2. Conversely, when a signal is given from the PC 2 to the shared cradle 4 (power transmission module 10) via an output interface (not shown) provided in the PC 2, the signal is sent to the conversion unit 64 and shared cradle 4 (power transmission module 10). Is converted into a readable format and provided to the subsequent circuit of the power transmission module 10.

  The power transmission module 10 includes a data transmission instruction signal generation unit 62 that transmits to the PC 2 a signal that gives an instruction to transmit data in the PC 2 from the PC 2 to the shared cradle 4. Data transmission instruction signal generator 62 is supplied with a DC voltage from internal power supply Vcc. The data transmission instruction signal generation unit 62 is further provided with an operation button (not shown) that can be operated by the user on the shared cradle 4, and the data transmission instruction signal generation unit 62 is operated by the user operating this operation button. Alternatively, an instruction to generate a data transmission instruction signal may be sent. The data transmission instruction signal generation unit 62 is connected to the conversion unit 64 via the switching element 63. When the switching element 63 is in the on state, a signal output from the data transmission instruction signal generation unit 62 is given to the conversion unit 64, and when the switching element 63 is in the off state, a data transmission instruction signal is generated. The signal output from the unit 62 is not provided to the conversion unit 64. The switching element 63 may be a transistor or may be another switching element such as a MOSFET. In the following description, it is assumed that the switching element 63 is composed of an NPN type transistor, and the switching element 63 is hereinafter referred to as a transistor 63 within a range that does not cause confusion.

  The transistor 63 has a base terminal connected to the switching control unit 61 and is configured to be on / off controlled based on a control signal from the switching control unit 61. The transistor 63 has a predetermined configuration that enables the on / off control. A configuration in which a DC bias voltage is applied may be used. The switching control unit 61 is configured to receive signals from the power transmission availability determination circuit 36, the electric energy determination circuit 37, and the full charge determination circuit 38. The operation content of each circuit will be described later.

  The power switching circuit 24, the LED display circuit 32, the carrier wave oscillation circuit 33, the modulation / demodulation circuit 34, the demodulation circuit 35, the power transmission availability determination circuit 36, the power amount determination circuit 37, the full charge determination circuit 38, the switching control unit 61, and data transmission The instruction signal generator 62 may be configured on the same IC chip for the purpose of downsizing the power transmission module 10. At this time, the LED 25, the LED 26, the resistor 27, the resistor 28, the switching element 29, the switching element 31, and the transistor 63 may be configured on the same chip (power transmission control IC 20).

  On the other hand, the power receiving module 40 includes a primary side coil 19, a secondary side coil 41 constituting the transformer 30, a smoothing capacitor 42 for smoothing a voltage induced at both ends of the secondary side coil 41, and a smoothing capacitor 42. The rectifying circuit 43 rectifies the voltage smoothed in step (1) and the smoothing circuit 44 that smoothes the DC voltage output from the rectifying circuit 43. Further, the voltage output from the smoothing capacitor 42 is subjected to predetermined processing to demodulate the signal to be superimposed, and the data signal from the PDA 3 is subjected to predetermined processing and modulated to be output from the smoothing capacitor 42. A smoothing capacitor 42 includes a clock extraction signal circuit 46 that extracts a clock signal by performing a predetermined process on the voltage to be applied, and a modulation circuit 47 that performs a modulation process by performing a predetermined process on the voltage output from the smoothing capacitor 42. And a power-on reset circuit 48 that receives an output from the smoothing circuit 22 and gives a drive instruction to a power reception control IC 50 to be described later, and a voltage that receives the output from the smoothing circuit 44 and converts it into a predetermined voltage A clamp circuit 49 and a regulator 51 are connected to the smoothing circuit 44. Further, the charge control circuit 52 is connected to the regulator 51, and the voltage output from the regulator 51 is given. The charge control circuit 52 charges the device (PDA 3) to be charged using the voltage given from the regulator 51. In this way, power is supplied from the shared cradle 4 to the PDA 3.

  The modem circuit 45, the clock extraction circuit 46, the modulation circuit 47, the power-on reset circuit 48, the voltage clamp circuit 49, and the regulator 51 are configured on the same IC chip for the purpose of downsizing the power receiving module 40. It does not matter (power reception control IC 50).

  In FIG. 2, commercial power (AC100V) is supplied from the outside, and the supplied AC100V is full-wave rectified by the rectifier circuit 13 and then smoothed by the smoothing circuit 14 and converted into a DC voltage. A pulse voltage generated when the switching circuit 15 switches the DC voltage output from the smoothing circuit 14 is applied to the primary coil 19 through the switching element 21, the switching element 22, and the switching element 23. The switching elements 21, 22, and 23 may be constituted by transistors as shown in FIG. 2, or may be other switching elements such as MOSFETs. The following description will be made assuming that the switching elements 21, 22, and 23 are configured by NPN transistors. In the following, the switching element 21, the switching element 22, and the switching element 23 are referred to as the transistor 21 and the transistor, respectively, within a range that does not cause confusion. 22 and referred to as transistor 23. At this time, a predetermined DC bias voltage may be applied to the transistor 21, the transistor 22, and the transistor 23 so that on / off control is possible with respect to the switching pulse voltage output from the switching circuit 15. . Furthermore, this DC bias voltage may be supplied from the aforementioned DC voltage Vcc.

  The collectors of all the transistors 21, 22, and 23 are connected to the output terminal of the switching circuit 15. The emitter of the transistor 21 is connected to one end of the primary side coil 19, and the other end of the primary side coil 19 is connected to the ground. Further, the primary coil 19 has taps a, b, and c in order from the far end from the coil end connected to the ground, that is, in order from the largest number of turns, and the emitter of the transistor 22 is connected to the tap a. The emitter of the transistor 23 is connected to the tap b. The tap c is connected to the carrier wave oscillation circuit 33, the modulation circuit 34, and the demodulation circuit 35 of the power transmission control IC 20 that performs power transmission control of the power transmission module 10. The bases of the transistors 21, 22, and 23 are connected to the power switching circuit 24.

  The pulse voltage switched by the switching circuit 15 is applied to both ends of the primary coil 19 through one of the transistors 21, 22, and 23 controlled by the power switching circuit 24. The primary coil 19 constitutes a secondary coil 41 and a transformer 30, and an induced voltage is generated at both ends of the secondary coil 41 by magnetic coupling. The magnitude of the voltage generated at this time is affected by the transformation ratio between the primary side coil 19 and the secondary side coil 41. As described above, since the number of turns of the primary coil 19 varies depending on which of the transistor 21, the transistor 22, and the transistor 23 is turned on by the power switching circuit 24, the transformation ratio can be varied.

  The pulse voltage switched by the switching circuit 15 is also applied to the transformer 16, converted into a predetermined voltage by the transformer 16, and then rectified and smoothed by the rectifier circuit 17 and the smoothing circuit 18. A DC voltage is applied to each circuit as an internal power supply Vcc for the power transmission control IC.

  The internal power supply Vcc is supplied to the light emitting diode 25 through the switching element 29 and the overcurrent suppressing resistor 27 and also supplied to the light emitting diode 26 through the switching element 31 and the overcurrent suppressing resistor 28. The switching element 29 and the switching element 31 are on / off controlled based on a signal from the LED display circuit 32. The light emitting diode 25 emits light when the switching element 29 is on, and the light emitting diode when the switching element 31 is on. 26 emits light. The light emitting diode 25 and the light emitting diode 26 are controlled in light emission color by a lighting control circuit (not shown) based on a signal from the LED display circuit 32. The light emitting diode 25 is red by control of the lighting control circuit. , Yellow, green, purple, and orange. The light-emitting diode 26 has a function of emitting light in red or green under the control of the lighting control circuit.

  Moreover, the switching element 29 and the switching element 31 may be configured by transistors, or may be other switching elements such as MOSFETs. In the following description, it is assumed that the switching elements 29 and 31 are composed of NPN transistors, and the switching element 29 and the switching element 31 are hereinafter referred to as a transistor 29 and a transistor 31, respectively, within a range that does not cause confusion. At this time, the DC voltage Vcc is applied to the collector terminals of the transistors 29 and 31, the light emitting diode 25 is connected to the emitter terminal of the transistor 29 via the resistor 27, and the resistor 28 is connected to the emitter terminal of the transistor 31. The light-emitting diode 26 is connected via. The control signal from the LED display circuit 32 is input to the bases of the transistor 29 and the transistor 31, respectively.

  When commercial power is supplied from the outside, the internal power supply Vcc is generated as described above, and the LED display circuit 32 controls the transistor 29 to be turned on so that the light emitting diode 25 emits light. It doesn't matter. By doing so, it is possible to visually confirm that commercial power is supplied to the shared cradle 4.

  The carrier wave oscillation circuit 33 is a circuit that outputs a predetermined carrier wave at regular intervals, and this output signal is given to the primary side coil 19. As described above, since the output side terminal of the carrier wave oscillation circuit 33 is connected to the tap c of the primary side coil 19, the carrier voltage output from the carrier wave oscillation circuit 33 is changed to the tap c of the primary side coil 19. And applied to both ends of the ground. At this time, magnetic coupling occurs between the primary side coil 19 and the secondary side coil 41, and a voltage corresponding to the turn ratio is induced at both ends of the secondary side coil 41.

The voltage induced at both ends of the secondary coil 41 by the signal from the carrier wave oscillation circuit 33 is rectified and smoothed via the smoothing capacitor 42, the rectifier circuit 43, and the smoothing circuit 44, and then the DC voltage Is converted to When this DC voltage is applied to the power-on reset circuit 48, the power reception module 40 (power reception control IC 50) recognizes that the carrier wave is sent from the carrier wave oscillation circuit 33. Then, the clock extraction circuit 46 connected to the secondary coil 41 extracts a clock signal necessary for modulation from the carrier wave, and the modulation circuit 47 uses the clock signal supplied from the clock extraction circuit 46 to information on the PDA 3. The carrier wave is modulated on the basis of the “code indicating that the device can receive power”, the “power consumption information”, and the “full charge information”, and the modulated wave generated by this modulation is converted into the secondary coil 41. To give. As described later, this “code indicating that the device can receive power” can be supplied by the shared cradle 4 by the device (PDA 3) placed on the shared cradle 4 by the power transmission availability determination circuit 36 of the power transmission module 10. It is used when determining whether or not it is a device (whether or not it is a device having a power receiving module 40 inside). Hereinafter, a device that can be supplied with electric power by the shared cradle 4 (a target device of the shared cradle 4) is referred to as a “power-receivable device”.
The “power consumption information” is used to determine the amount of power to be supplied to the device (PDA 3) placed on the shared cradle 4 by the power amount determination circuit 37 of the power transmission module 10 as will be described later. The signal is supplied to the power switching circuit 24 and used to instruct to change the turns ratio of the transformer 30. Further, the “full charge information” is used to determine whether or not the charging performed on the target device (PDA 3) by the full charge determination circuit 38 is completed, as will be described later.

  The modulation method used in the above-described modulation may use a phase modulation method in which a carrier wave is intensity-modulated periodically and 0/1 information is expressed by phase change information of a signal. As described above, since the clock signal necessary for modulation is extracted from the carrier wave transmitted from the power transmission module 10, it is not necessary to provide an oscillation circuit in the PDA 3 that is a power receiving device, and further, the clock extraction circuit 46 and the modulation circuit 47 are driven. Since the DC voltage generated from the carrier wave supplied from the carrier wave oscillation circuit 33 can be used as the power source for driving, no driving power source is required in the power receiving module 40, and the circuit configuration can be simplified.

  Hereinafter, an operation flow in which power is supplied from the power transmission module 10 to the power reception module 40 and the PDA 3 is charged will be described with reference to the drawings. FIG. 3 is a flowchart showing the flow of the power supply operation performed between the power transmission module 10 and the power reception module 40.

  The power transmission module 10 starts operation when a commercial voltage is supplied. First, when a commercial voltage is input, the switching pulse output from the switching circuit 15 is transformed by the transformer 16 and rectified and smoothed by the rectifying circuit 17 and the smoothing circuit 18 as described above to generate the DC voltage Vcc. Since the DC voltage Vcc is used as an internal power source for the power transmission control IC 20, power is supplied to each circuit constituting the power transmission control IC 20.

  First, the LED display circuit 32 gives a control signal for turning on the transistor 29 to the transistor 29. A DC voltage Vcc is supplied to the collector terminal of the transistor 29, and a current is supplied to the light emitting diode 25 through the transistor 29 so that the light emitting diode 25 is lit. At this time, the LED display circuit 32 gives a predetermined control signal to a lighting control circuit (not shown), thereby designating the light emission color of the light emitting diode 25 to red. On the other hand, the transistor 31 is controlled to be turned off, whereby the light emitting diode 26 is turned off (STEP 1).

  Next, when the DC voltage Vcc is supplied, the carrier wave oscillation circuit 33 outputs a predetermined carrier wave at regular intervals (STEP 2), and this carrier wave is used to receive power by the shared cradle 4 on the shared cradle 4. Is determined (STEP 3). A method for determining whether this power-receivable device is placed on the shared cradle 4 will be described below.

  The carrier wave output from the carrier wave oscillation circuit 33 is given to the tap c of the primary side coil 19, and when the PDA 3 is mounted on the shared cradle 4, it is transmitted to the magnetically coupled secondary side coil 41. The The carrier wave transmitted to the secondary coil 41 is rectified and smoothed through the smoothing capacitor 42, the rectifier circuit 43, and the smoothing circuit 44 as described above, and converted into a DC voltage. The DC voltage obtained by converting the carrier wave is detected by the power-on reset circuit 48 to recognize that the carrier wave has been transmitted. Then, the clock extraction circuit 46 connected to the secondary coil 41 extracts a clock signal necessary for modulation from the carrier wave, and the modulation circuit 47 indicates “the device is a power-receivable device” which is information of the PDA 3. A modulated wave obtained by modulating a carrier wave based on “code”, “power consumption information”, and “full charge information” is applied to the secondary coil 41. The device that can be supplied with electric power by the shared cradle 4 is provided with a memory in which “a code indicating that the device can receive power”, “power consumption information”, and “full charge information” are stored in advance. The information may be supplied from the memory to the power reception control IC 50.

  The modulated wave given from the modulation circuit 47 to the secondary coil 41 is transmitted to the magnetically coupled primary coil 19. The demodulation circuit 35 connected to the tap c of the primary coil 19 receives and demodulates the transmitted modulated wave, and is included in the demodulated information signal “a code indicating that the device is a power-receivable device”. , “Power consumption information” and “full charge information” are provided to the power transmission availability determination circuit 36, the electric energy determination circuit 37, and the full charge determination circuit 38. Here, the power transmission availability determination circuit 36 determines whether or not the power receiving device is placed on the power transmission device 1 based on the “code indicating that the device can receive power” (STEP 3). If the predetermined “code indicating that the device is a power receiving device” has been received (YES in STEP 3), it is recognized that the power receiving device is placed on the shared module 4, and then the power receiving device It is determined whether (target device) is correctly placed on the shared cradle 4 (STEP 4). On the other hand, if the predetermined “code indicating that the device can be received” has not been received (No in STEP 3), it is determined that the device capable of receiving power is not placed on the shared cradle 4, and the carrier wave is output again. (STEP 2).

  Next, determination of whether or not a power receivable device is correctly placed on the shared cradle 4 will be described. By determining whether or not the power-receivable device is correctly placed on the shared cradle 4, the primary coil 19 in the power transmission module 10 and the secondary coil 41 in the power reception module 40 transmit power. By determining whether or not it is arranged at a position with high efficiency and providing this determination step, it is possible to select not to perform power transmission when the power transmission efficiency is extremely bad.

  FIG. 4 is a diagram showing the relationship between the relative position between the shared cradle 4 and the PDA 3 and the transmission efficiency of power and information signals. Here, the information signal is the above-described modulated wave returned from the power receiving module 40 with respect to the carrier wave transmitted from the power transmitting module 10. 4, (a) shows the absolute value of the transmission efficiency of power (solid line) and information signal (dashed line), and (b) shows the relative value of the transmission efficiency of power (solid line) and information signal (dashed line). In both (a) and (b), the horizontal axis indicates the amount of displacement between the shared cradle 4 and the PDA 3, and the magnetic coupling between the primary coil 19 of the shared cradle 4 and the secondary coil 41 of the PDA 3 is the most. The case where the shared cradle 4 and the PDA 3 are located at a position where the degree of coupling is high is set to 0, and the amount of displacement of the PDA 3 from the position in the left-right direction or the front-rear direction is indicated in mm.

  As shown in FIG. 4A, both the power transmission efficiency and the information signal transmission efficiency become worse as the positional deviation between the shared cradle 4 and the PDA 3 increases. As shown in FIG. 4B, the power transmission efficiency and the information signal transmission efficiency decrease at the same rate with respect to the positional deviation between the shared cradle 4 and the PDA 3, so that the shared cradle 4 generates power. Even when the power is not transmitted, it is possible to recognize the amount of positional deviation between the shared cradle 4 and the PDA 3 by measuring the signal strength of the information signal.

  And, as the positional deviation between the shared cradle 4 and the PDA 3 increases, the power transmission efficiency deteriorates. Therefore, if the power transmission efficiency is extremely low, the PDA 3 cannot receive power even if power is transmitted from the shared cradle 4. Therefore, it is unnecessary to perform power transmission. Therefore, it is determined whether or not the positional deviation amount between the shared cradle 4 and the PDA 3 exceeds a predetermined deviation amount (STEP 4). Power transmission from the device 1 is not performed, and the light emitting diode 25 is turned on orange as a warning display, and the light emitting diode 26 is turned off (STEP 5). At this time, a warning sound may be generated.

  On the other hand, when the shift amount of the position between the shared cradle 4 and the PDA 3 does not exceed the predetermined shift amount (Yes in STEP 4), the process proceeds to a process for determining the amount of power to be transmitted (STEP 6). This determination processing is performed by the power amount determination circuit 37 based on the “power consumption information” included in the information signal demodulated by the demodulation circuit 35, and the power of the PDA 3 is recognized based on the “power consumption information”. The power transmission output is adjusted to three levels of large, medium and small according to the electric power. The determination result from the power amount determination circuit 37 is transmitted to the LED display circuit 32 and the power switching circuit 24, and the following processing is performed according to the large, medium, and small determination results.

  First, when the determination result is small (small in STEP 6), the LED display circuit 32 turns on the light emitting diode 25 in yellow and blinks the light emitting diode 26 in red (STEP 7). By changing the combination of the light emission colors of the light emitting diode 27 and the light emitting diode 28 according to the magnitude of the power transmission output, the user can visually recognize the magnitude of the power transmission output currently performed by the shared cradle. it can. The power switching circuit 24 controls the transistor 21 to be in an on state. When the transistor 21 is turned on, the pulse voltage from the switching circuit 15 is applied to the entire winding of the primary side coil 19, and power transmission is started (STEP 8).

  Next, when the determination result is medium (medium in STEP 6), the LED display circuit 32 turns on the light emitting diode 25 in green and blinks the light emitting diode 26 in red in the sense that medium power transmission is performed (STEP 9). . The power switching circuit 24 controls the transistor 22 to be in an on state. When the transistor 22 is turned on, the pulse voltage from the switching circuit 15 is applied to the tap a of the primary coil 19 and power transmission is started (STEP 10).

  On the other hand, if the determination result is large (STEP 6 is large), the LED display circuit 32 turns on the light emitting diode 25 in purple and blinks the light emitting diode 26 in red in the sense that high power transmission is performed (STEP 11). The power switching circuit 24 controls the transistor 23 to be in an on state. When the transistor 23 is turned on, the pulse voltage from the switching circuit 15 is applied to the tap b of the primary side coil 19 to start power transmission (STEP 12).

  By switching the transistor 21, the transistor 22, and the transistor 23, the position where the pulse voltage from the switching circuit is applied changes on the winding of the primary side coil 19. That is, since the number of turns of the primary side coil 19 that is actually effective changes, the turn ratio of the primary side coil 19 and the secondary side coil 41 changes. In this way, it is possible to transmit power according to the power of the target device. In this embodiment, switching is performed in three stages of large, medium, and small, but the number of switching may be further increased.

  Even after power transmission is started, the carrier wave is periodically transmitted (STEP 13), and the PDA 3 is not first removed from the shared cradle 4 based on the information included in the modulated wave returned to the carrier wave. (STEP 14). In this confirmation, as in STEP 3, the power transmission availability determination circuit 36 determines whether or not the power receivable device is placed on the shared cradle 4 based on “a code indicating that it is a power receivable device”. If the predetermined “code indicating that the device can be received” has not been received (No in STEP 14), it is determined that the received device has been removed from the shared cradle 4, and the power switching circuit 24 uses the transistor 21. Then, all the transistors 22 and 23 are controlled to be turned off to stop the power output (STEP 15).

  On the other hand, if the predetermined “code indicating that the device is a power receiving device” has been received (YES in STEP 14), it is recognized that the power receiving device is placed on the shared cradle 4, and then the power receiving device It is determined whether the possible device is correctly placed on the shared cradle 4 (STEP 16). Similar to STEP 4, this determination is made by determining whether or not the positional shift amount between the shared cradle 4 and the PDA 3 exceeds a predetermined shift amount. If this deviation amount exceeds a predetermined deviation amount (No in STEP 16), power transmission from the shared cradle 4 is not performed, and the light emitting diode 25 is lit in orange as a warning display as in STEP 5, The light emitting diode 26 is turned off (STEP 17). At this time, a warning sound may be generated.

  On the other hand, if the shift amount between the position of the shared cradle 4 and the PDA 3 does not exceed the predetermined shift amount, the process proceeds to a process for determining whether or not the charge state of the PDA 3 is a full charge state (STEP 18). . This determination process is performed by the full charge determination circuit 38 determining whether the PDA 3 is fully charged based on “full charge information” included in the information signal demodulated by the demodulation circuit 35. When the battery is fully charged (Yes in STEP 18), the power switching circuit 24 controls all of the transistors 21, 22 and 23 to be turned off to stop the power output (STEP 19). The light-emitting diode 25 is lit in red and the light-emitting diode 26 is lit in green (STEP 20), meaning that power transmission is stopped due to a fully charged state, and the confirmation of the state of the power receiving device is continued by outputting a carrier wave. (STEP 13). On the other hand, when the battery is not fully charged (No in STEP 18), confirmation of the state of the power receiving device is continued while performing power transmission (STEP 13). As described above, power is supplied from the shared cradle 4 to the PDA 3.

  In the above description, the operation state of the shared cradle 4 (the presence / absence of transmitted power, the amount of transmitted power, whether it is fully charged, etc.) depends on the light emitting color of the light emitting diode 25 and the light emitting diode 26 and the lighting state (turned off, turned on, blinking). The display operation of the light emitting diode 25 and the light emitting diode 26 will be described below with reference to FIG. FIG. 5 is a view showing display states of the light emitting diodes 25 and the light emitting diodes 26 according to the operation states of the shared cradle 4. First, when the AC plug 7 is not connected to a commercial power source, it is assumed that “light emitting diode 25: off, light emitting diode 26: off”. When the AC plug 7 is connected to the commercial power supply, the light emitting diode 25 is turned on in red and the light emitting diode 26 is turned off. Further, based on the information on the power receiving device, according to the amount of transmitted power that the shared cradle 4 is transmitting to the power receiving device, “Light Emitting Diode 25: Purple Lighted, Light Emitting Diode 26: Red “Lighting diode 25: green light, light emitting diode 26: red light flashing” for medium power, and “Light emitting diode 25: light yellow light, light emitting diode 26: red light flashing” for low power. Further, when the power receiving device is being charged, the light emitting diode 26 is blinking red, and when the power receiving device is fully charged, the light emitting diode 26 is lit in green. When a power receivable device is placed on the shared cradle 4 and the positional deviation is more than a certain level, the light emitting diode 25 can be lit in orange and a warning sound can be emitted. As a result, the user can visually determine the operating state of the shared cradle 4. In addition, about the installation location of a light emitting diode, a color, lighting, blinking, combination of light extinction etc., what was mentioned above is an example and is not limited to this.

  Next, the operation content of transmitting and receiving data between the PDA 3 and the PC 2 placed on the shared cradle 4 will be described below with reference to the drawings. FIG. 6 is a flowchart showing the operation content for transmitting and receiving data between the shared cradle 4 and the PC 2.

  As described above, the shared cradle 4 is configured to be able to transmit / receive data to / from the PC 2 wirelessly or by wire. When a data transmission / reception function by wireless connection is provided, an antenna that can transmit and receive a fixed radio signal superimposed with a data signal may be provided on both the shared cradle 4 and the PC 2. Further, when a wired data transmission / reception function is provided, a configuration may be adopted in which both have a connection interface capable of connecting the shared cradle 4 and the PC 2 with the same cable. In the following description, it is assumed that the shared cradle 4 and the PC 2 are capable of bidirectional data transmission / reception by wire or wireless.

  Whether or not a device capable of transmitting and receiving data is placed after confirming that the power receiving target device is placed at the correct position on the shared cradle 4 by the power transmission availability determination circuit 36 (STEP 4 shown in FIG. 3). Is confirmed (STEP 21). This determination as to whether or not data transmission / reception is possible is based on the fact that information indicating whether or not data transmission / reception is possible is included in the information indicated by the “code indicating that the device can receive power” sent from the power reception module 40. The determination may be made at the same time when the power receivable device is determined in STEP 3 shown in FIG. In addition, a data transmission / reception determination circuit (not shown) is provided in the power transmission control IC 20, and a code indicating that data transmission / reception is possible is attached to the PDA 3 in advance. A “code indicating that data transmission / reception is possible” is further superimposed and transmitted to the power transmission control IC 20 side, and this “code indicating that data transmission / reception is possible” is demodulated from the modulated wave sent by the demodulation circuit 35. The data transmission / reception enable determination circuit may be configured so that the data transmission / reception enable determination circuit performs determination based on the supplied signal.

  At this time, if the device placed on the shared cradle 4 is capable of data transmission / reception (Yes in STEP 21), the power transmission availability determination circuit 36 or the data transmission / reception availability determination circuit (not shown) notifies the switching controller 61 “ A signal indicating that “data transmission / reception is possible” is given. On the other hand, when the device placed on the shared cradle 4 cannot transmit / receive data (No in STEP 21), a control signal is not given to the switching control unit 61, and a device capable of transmitting / receiving data is mounted. Do not proceed to the next step until it is placed.

  A charge capacity exceeding a predetermined capacity (hereinafter referred to as “minimum capacity”) required when the PDA 3 performs data transmission / reception after a signal indicating that data transmission / reception is possible is provided to the switching control unit 61. It is determined whether or not (STEP 22). The minimum capacity is calculated from the capacity information of the data to be sent from the PC 2 to calculate the amount of power required to actually transmit the data to the PDA 3, and the required amount of power and the charge at that time are charged. It may be a capacity necessary for comparison with the amount of electric power. At this time, the full charge determination circuit 38 may be configured to recognize the ratio of the retained power amount when compared with the full charge state, not the binary information indicating whether the charge state of the PDA 3 is the full charge state, Furthermore, a structure that can recognize the actual amount of charging power as information may be used. In this case, “information indicating the current charging power amount” may be superimposed on the modulated wave transmitted from the modulation circuit 47.

  When the charging capacity of the PDA 3 exceeds the “minimum capacity” (Yes in STEP 22), a signal indicating that it is possible to determine whether or not to transmit data from the PC 2 is given to the switching control unit 61. On the other hand, if the charge capacity of the PDA 3 is less than the “minimum capacity” (No in STEP 22), it is impossible to determine whether or not data transmission from the PC 2 is possible. Confirm.

  The switching control unit 61 controls the transistor 63 to be in an ON state when receiving a signal indicating that it is possible to determine whether or not data transmission is possible (STEP 23). In this state, when a signal is supplied from the data transmission instruction signal generation unit 62 to the transistor 63, a signal from the data transmission instruction signal generation unit 62 is sent to the conversion unit 64 via the transistor 63. At this time, an operation button (not shown) that can be operated by the user is attached to the shared cradle 4 as described above, and the data transmission instruction signal generation unit 62 is operated by operating the operation button by the user. An instruction to generate a data transmission instruction signal may be sent.

  The converter 64 converts the given transmission instruction signal into a format readable by the PC 2 and transmits the converted signal to the PC 2 (STEP 24). When the PC 2 receives the signal, the PC 2 recognizes that a device capable of transmitting / receiving data is placed on the shared cradle 4 and that preparation for data transmission / reception is completed. Then, the data to be transmitted to the PDA 3 is selected and the capacity information of this data is transmitted to the conversion unit 64. It should be noted that the data desired to be transmitted from the PC 2 to the PDA 3 may be selected by the user.

  When the converter 64 receives the data capacity information sent from the PC 2 (STEP 25), the converter 64 applies the information signal to the modulation / demodulation circuit 34 and transmits it to the PDA 3 using a carrier wave supplied from the carrier wave oscillation circuit 33. The modulation process is performed. At this time, a clock extraction circuit is provided in the modulation / demodulation circuit 34, and a clock signal used for modulation processing is generated using the carrier wave input from the carrier wave oscillation circuit 33, and the generated clock signal is generated. The modulation processing may be performed using A second carrier oscillation circuit (not shown) that outputs a carrier wave different from the carrier wave oscillation circuit 33 is provided, and modulation processing is performed using a clock signal generated from the carrier wave output from the second carrier wave oscillation circuit. It doesn't matter what you do. The data capacity information signal thus modulated is input to the terminal c of the primary side coil 19 and transmitted to the modulation / demodulation circuit 45 of the power reception control IC 50 via the transformer 30.

  The modem circuit 45 performs predetermined processing on the received modulation signal to extract data capacity information (STEP 26). This data capacity information signal is sent to the CPU of the PDA 3 to calculate the amount of power required to transmit data having the data capacity and to compare with the charged capacity of the PDA 3 at the present time. (STEP27). If the PDA 3 has a charge capacity that exceeds the amount of power required for data transmission (Yes in STEP 27), an information signal indicating that data reception preparation is complete is provided to the modem circuit 45. If the charging capacity exceeding the amount of power required for data transmission is not provided (No in STEP 27), the process returns to the step of confirming the charging state again (STEP 27) after waiting for a predetermined time. At this time, a display unit for displaying characters and the like on the shared cradle 4 may be provided, and the display unit may display that it is on standby. In addition, when the charging capacity does not have the required amount of power (No in STEP 27), the user may select whether to wait until the required amount of power is charged or to stop data transmission. Absent. At this time, in addition to the display unit, an operation button for the user to perform the selection may be provided, and the above selection may be performed by the user operating the operation button.

  The modulation / demodulation circuit 45 performs a predetermined modulation process on the given information signal and outputs it to the secondary coil 41, and the output signal is given to the modulation / demodulation circuit 34 via the transformer 30. When the modulation / demodulation circuit 34 demodulates the given modulation signal and confirms that the PDA 3 is ready to receive data, the modulation / demodulation circuit 34 sends a signal giving an instruction to the PC 2 to transmit the target data to the conversion unit 64. (STEP28). The converting unit 64 converts the given signal into a format that can be confirmed by the PC 2 and gives the converted signal to the PC 2.

  When the signal indicating the data transmission instruction from the conversion unit 64 is given, the PC 2 transmits the target data to the conversion unit 64. The converter 64 sends the supplied data to the modulation / demodulation circuit 34, which modulates and applies a predetermined modulation process to the primary coil 19, and the modulated data signal is received via the transformer 30 by the power reception control IC 50. Is transmitted to the modem circuit 45 (STEP 29). The modem circuit 45 demodulates the given modulation signal to acquire a data signal (STEP 30), and outputs the acquired data signal to the memory of the PDA 3 (STEP 31). At this time, the memory may be provided with an area for storing the data given from the PC 2, and when the same data exists and the sent data has a newer update date and time. The configuration may be overwritten.

  By configuring in this way, the shared cradle 4 can switch the required transmission power according to the power of the power receiving device in three stages of high power, medium power, and low power, so that one shared cradle can be used. Thus, power can be supplied to different types of power receiving devices. Further, when the device placed on the shared cradle 4 is an electronic device capable of transmitting / receiving data to / from the PC 2 such as the PDA 3, the transmission of data from the PC 2 is received in parallel with the power supply from the shared cradle 4. Can do. Even in a fully charged state, data can be transferred from the PC 2 using the charged power, and since the carrier wave is output at a predetermined interval, the consumed power is supplied from the shared cradle 4 each time. Can be supplied.

  In the above description, the data is transmitted from the PC 2 to the PDA 3, but the data can be transmitted from the PDA 3 to the PC 2.

  In this case, information on the data transmission direction (information indicating that data is transmitted from the PDA 3 to the PC 2) is superimposed on the signal provided from the data transmission instruction signal generation unit 62 to the conversion unit 64, and this signal is transmitted from the conversion unit 64. It is given to PC2. After confirming that the data reception preparation is complete, the PC 2 returns a data transmission instruction signal to the conversion unit 64, and this signal is sent to the modulation / demodulation circuit 34 and subjected to predetermined modulation processing, and then the transformer 30. To the modulation / demodulation circuit 45 of the power reception control IC 50. The modem circuit 45 performs predetermined demodulation processing from the given signal, recognizes a data transmission instruction request from the PC 2, and instructs the PDA 3 to select data to be transmitted. The target data selected by the PDA 3 is determined by the CPU of the PDA 3 based on the data capacity and the current charge capacity. If the data can be transmitted, the target data is converted into a modem circuit. 45 is subjected to predetermined modulation processing and sent to the secondary coil 41. The data sent to the secondary coil 41 is sent to the modulation / demodulation circuit 34 via the transformer 30 and subjected to demodulation processing, and then sent to the PC 2 via the conversion unit 64.

  Further, when the charging capacity exceeding the required power amount is not held, it is possible to wait until the charging capacity reaches the required power amount, and to transmit data when the capacity is reached. In this case, a signal indicating that it is in a standby state may be transmitted to the power transmission module 10 and the PC 2 side, or a signal indicating that a transmission instruction is requested again may be transmitted. In this case, the power transmission module 10 includes a standby determination circuit (not shown) that is connected to the modulation / demodulation circuit 34 and determines whether or not the standby is in progress. Are connected, and a light-emitting diode controlled by a signal from the LED display circuit is separately provided, so that the light-emitting diode can be visually recognized when it is on standby. It does not matter as a configuration.

  Furthermore, in the above description, the coil forming the transformer 30 is configured by one set of the primary side coil 19 and the secondary side coil 41. However, the coil 30 is configured by a plurality of sets of coils and has the highest power transmission efficiency. A combination of high coils may be selected to perform power transmission and signal transmission. The operation in such a case will be described below with reference to the drawings. FIG. 7 is a block diagram illustrating a partial configuration of the power transmission module and the power reception module. In addition, about the part same as the power transmission module 10 and the power receiving module 40 shown in FIG. 2, illustration is abbreviate | omitted in order to avoid complexity.

  The power transmission module 10a illustrated in FIG. 7 includes a primary coil group 19x in which a plurality of coils are installed in parallel instead of the primary coil 19 as compared with the power transmission module 10 illustrated in FIG. Further, the power transmission module 10a gives a coil switching circuit 72 for selecting one coil from the coils provided in the primary side coil group 19x, and gives a control signal to the coil switching circuit 72 to indicate the coil to be selected. A switching control unit 73 is provided.

  Further, the power receiving module 40a shown in FIG. 7 includes a secondary coil group 41x in which a plurality of coils are installed in parallel instead of the secondary coil 41, as compared with the power receiving module 40 shown in FIG. The power receiving module 41a also provides a coil switching circuit 82 for selecting one coil from the coils provided in the secondary coil group 41x, and gives a control signal to the coil switching circuit 82 to indicate the coil to be selected. A switching control unit 83 is provided. Furthermore, the power receiving module 40a includes a voltage measuring unit 84 that measures the voltage generated at both ends of the secondary coil group 41x selected by the coil switching circuit 82, and the measurement value measured by the voltage measuring unit 84 is measured. It has a memory 85 for storing. The switching control unit 83 gives an instruction of a coil to be selected to the coil switching circuit 82 based on the measured value in the voltage measuring unit 84 stored in the memory 85.

  Furthermore, the power transmission module 10a and the power reception module 40a each include a signal transmission primary coil 71 and a signal transmission secondary coil 81 for transmitting a coil switching control signal, and these coils constitute the transformer 70. is doing. A signal from the switching control unit 83 is given to the secondary coil 81 for signal transmission, and is also given to the switching control unit 72 in the power transmission module 10a via the transformer 70. The switching control unit 73 is based on this signal, The content of the control signal given to the coil switching circuit 72 is changed.

  The coils in the primary side coil group 19x selected by the coil switching circuit 72 and the coils in the secondary side coil group 41x selected by the coil switching circuit 82 are the primary side coil 19 and the coil shown in FIG. The same connection relationship as that of the secondary coil 41 is maintained. The coil switching circuit 72 may be configured by a switch for selecting and switching one of the plurality of coils installed in the primary side coil 19x, and the coil switching circuit 82 may be configured on the secondary side. It may be configured by a switch that selects and switches one of the plurality of coils installed in the coil 41x. At this time, the coil switching circuit 72 and the coil switching circuit 82 always select any one coil in the primary side coil group 19x and any one coil in the secondary side coil group 41x. It is.

  In such a configuration, when the carrier wave is output at a constant interval in STEP 2 shown in FIG. Is given. Then, a voltage is induced at both ends of the coil in the secondary side coil 41x selected in advance by the coil switching circuit 82. This voltage is measured by the voltage measuring unit 84 and the measured voltage value is sent to the memory 85 and stored. At this time, together with the measured voltage value, information on the combination of the coil selected in the primary coil group 19x and the coil selected in the secondary coil group 41x is also stored.

  When the combination of the measured voltage value and the coil is stored in the memory 85, the switching control unit 83 transmits a control signal for switching the coil in the secondary coil 41x to the coil switching circuit 82. The coil switching circuit 82 switches the coil based on the control signal, and the voltage measuring unit 84 measures the voltage induced at both ends of the switched coil again, and the measured voltage value is combined with the combination of the coils. Stored in the memory 85. Thereafter, coil switching and voltage value measurement are performed on all the coils arranged in the secondary coil 41x in this manner.

  When the switching for all the coils arranged in the secondary coil group 41x is completed, the switching control unit 83 sends a coil switching instruction signal for the primary coil group 19x to the secondary coil 81 for signal transmission. Send. This signal is given to the switching control unit 73 from the primary coil 71 for signal transmission via the transformer 70. When a signal is sent from the primary coil 71 for signal transmission, the switching control unit 73 transmits a control signal for switching the coil in the primary coil 19 x to the coil switching circuit 72. The coil switching circuit 72 switches the coils in the primary coil group 19x based on the switching instruction from the switching control unit 73.

  When the coil of the primary side coil group 19x is switched, the selection in the secondary side coil group 41x is performed via a transformer formed between the switched coil and the selected coil in the secondary side coil group 41x. A voltage is induced across the coil. This voltage is measured by the voltage measuring unit 84 and stored in the memory 85 together with the combination of coils. Hereinafter, the secondary induced voltage is measured by combining all the coils constituting the primary coil group 19x and all the coils constituting the secondary coil group 41x in this way.

  When all the voltage measurements are completed, the switching control unit 83 selects a combination showing the highest voltage value from all the voltage values stored in the memory 85, and the coil corresponding to the combination is selected again. A control signal is given to the switching circuit 82 and the switching control unit 73. The switching control unit 73 gives a coil switching instruction to the coil switching circuit 72 based on a control signal sent from the switching control unit 83 via the transformer 70, and confirms the selected coil in the primary coil group 19x. To do. The coil switching circuit 82 determines a selected coil in the secondary coil group 41x based on a control signal from the switching control unit 83.

  Each step after STEP 3 in FIG. 3 is performed using the primary side coil and the secondary side coil thus determined. Until the primary side coil and the secondary side coil are determined, a switch is provided in front of each circuit connected to the subsequent stage of the secondary side coil group so as not to proceed to the steps after STEP3. The switch is turned off until the coil is fixed, and the switch may be controlled to be turned on when the secondary coil is fixed. At this time, a switch control signal may be given from the switching control unit 83.

  With this configuration, even when a shift occurs in the position of the PDA 3 placed on the shared cradle 4, a combination of coils having high power transmission efficiency can be selected, so that desired power is supplied to the PDA 3. can do. In the meantime, when the power transmission efficiency deteriorates, such as when the installation position of the PDA 3 on the shared cradle 4 changes while charging the PDA 3, charging or data transfer is temporarily stopped. In addition, the coil combination having the highest power transmission efficiency may be selected again, and charging or data transfer may be resumed after the coil to be selected is determined. At this time, the voltage measuring unit 84 always measures the voltage generated at both ends of the coil, and stores the measured voltage in the memory 85, and when the measured voltage value changes suddenly during charging or data transfer. Charging or data transfer may be temporarily stopped, and a confirmation operation may be performed to determine whether the coil combination has high power transmission efficiency.

  In the above description, the switching control unit 83 selects the combination showing the highest voltage value among all the voltage values stored in the memory 85, but there is no combination exceeding the predetermined power transmission efficiency. Alternatively, all the combinations may not be selected, and the voltage measurement unit 84 may return to the step of measuring the voltage induced at both ends of each coil constituting the secondary coil group 41x. At this time, the shared cradle 4 may give an instruction signal indicating that the PDA 3 is to be remounted on the power transmission module 10, and the user can visually recognize the light emitting diode by emitting light in a predetermined color. It does not matter as a configuration.

  In the above description, both the primary coil group 19x and the secondary coil group 41x are composed of a plurality of coils, but only one of them is composed of a plurality of coils, and the other is a coil. It does not matter even if it is constituted by.

  In the above description, the internal power supply Vcc of the power transmission module 10 is generated by inserting the AC plug 7 of the common cradle 4 into the outlet of the AC outlet, and this DC voltage is supplied to each circuit. However, the power transmission module 10 is not provided until the common cradle 4 is provided with a power switch that can be operated from the outside by the user, and the AC plug 7 is inserted into the outlet of the AC outlet and then the switch is turned on. A configuration may be adopted in which power is supplied. By doing in this way, even if the AC plug 7 is inserted in the AC outlet insertion port, it can be operated not to supply power to each circuit, and power consumption can be suppressed.

  Further, an area where power can be transmitted by the primary side coil 19 provided in the shared cradle 4 is measured in advance, and the area includes a light emitting diode for area that emits light on the shared cradle. The area light emitting diode may emit light when power is applied. In this way, the user can visually grasp the approximate placement position of the PDA 3. The area light emitting diode may be configured to emit light upon receiving power from the internal power supply Vcc.

  The power transmission module 19 includes a current measurement sensor that measures the current flowing through the primary coil 19, and the current value flowing through the primary coil 19 is measured by the current measurement sensor when the PDA 3 is brought close to the shared cradle 4. However, the area light emitting diode may emit light only when the measured value is larger than a predetermined value (see FIG. 8).

  In addition to the circuit configuration shown in FIG. 2, the circuit configuration shown in FIG. 8 sends a current sensor 91 that measures the current value flowing through the primary coil 19 and the current value measured by the current sensor 91. LED area display circuit 92 that performs display control of area light emitting diodes based on the above, switching element 93 that is on / off controlled based on a control signal from area LED display circuit 92, and internal power supply Vcc is a switching element And an area light-emitting diode 94 provided through the area 93. The area light emitting diode 94 may be configured such that a current is input via a resistor 95 for preventing overcurrent. At this time, only when the measured value from the current sensor 91 is given to the area LED display circuit 92 and a current value larger than a predetermined current value stored in advance in the area LED display circuit 92 is confirmed, The area LED display circuit 92 gives a control signal to the switching element 93 to control the switching element 93 to the ON state. When the switching element 93 is turned on, the internal power supply Vcc is applied to the area light emitting diode 94, and the area light emitting diode 94 emits light.

  At this time, when the primary coil 19 is provided on the shared cradle 4 in a state of being separated by a predetermined distance, when the PDA 3 is brought close to the shared cradle 4, the PDA 3 at the time when the PDA 3 is brought closer is provided. When a magnetic coupling is formed with the secondary coil 41, only the area that can be handled by the primary coil 19 having the highest power transmission efficiency emits light on the shared cradle 4, so the user places the PDA 3 on the shared cradle 4. At this time, it is possible to visually grasp the optimum placement location for the current position of the PDA 3.

  Further, even when the primary coil group 19x including a plurality of primary coils 19 is provided on the shared cradle 4 at a predetermined distance, 1 in the primary coil group 19x. The number of coils is selected and the current value is measured in the same manner as described above. After the PDA 3 is placed in the area where the area light emitting diode emits light, any coil belonging to the primary side coil group 19x is newly selected. The determination as to whether to perform power transmission by selection may be performed.

  Further, the shared cradle 4 may include a plurality of power transmission modules 10 inside. With this configuration, it is possible to efficiently supply power to a plurality of PDAs 3 placed on the shared cradle 4 simultaneously.

  In the above description, the PDA 3 is mounted on the shared cradle 4. However, the same configuration can be applied to other embodiments. Other embodiments will be described below with reference to the drawings. Since the power supply method and the data communication method are the same as described above, the description thereof is omitted.

  FIG. 9 shows a conceptual diagram of charging an electronic device using a power supply pad that supplies power to the placed electronic device. The power supply pad 100 includes a power transmission module 10 therein, and the power transmission module 10 includes a plurality of primary side coils 19. The upper surface of the power supply pad 100 is composed of a table top plate 101, and the power receiving module 40 included in the electronic device 103 is mounted on the table top plate 101 by placing the electronic device 103 including the power receiving module 41. In this configuration, power is transmitted to and from the power transmission module 10 in the power supply pad 100. The power supply pad 100 is configured to be able to perform data communication with an external PC 2 by wire or wireless.

  In addition, the power transmission module 10 includes an area light emitting diode 94, and the area light emitting diode 94 emits light in the optimum placement area of the table plate 101. Furthermore, the electronic device 103 is not limited to the PDA 3 described above, and may be an electronic device such as a mobile phone or a CD player.

  When configured in this way, even when the table top 101 is configured as a wide table, the area where the electronic device 103 is placed emits light, so that the user can visually grasp the placement position. Can be convenient. Further, by providing the plurality of power transmission modules 10 inside as described above, power can be transmitted to a plurality of electronic devices 103 at the same time. Further, since communication with the PC 2 is possible, for example, when the electronic device 103 is a mobile phone, an address book or the like stored in the mobile phone can be temporarily moved to the PC 2.

  At this time, as shown in FIG. 10, a plurality of electronic devices 103 are mounted on the table top plate 101 at the top of the showcase 110 in which the power transmission module 10 is provided instead of the power supply pad 100. You can also. Like the power supply pad 100, the showcase 110 is configured to be able to perform data communication with the PC 2 wirelessly or by wire. In this way, for example, a showcase 110 is installed in an electrical store where many electronic devices are displayed at a store, and the electronic device 103 as a product is placed on the showcase 110. Since the electronic device 103 can be automatically charged, a cord for charging is unnecessary, and complexity can be avoided. In addition, since the customer can automatically charge the electronic device 103 by placing the product in a predetermined area after the customer actually uses the electronic device 103 as a product and tries it, the power of the electronic device 103 is turned on. It can be turned on at all times without being turned off, and effective product display is possible. At this time, the area light emitting diode 94 may be provided so that the optimum installation area emits light on the table top 101.

  FIG. 11 shows another embodiment. FIG. 11A shows a mobile base capable of charging and data communication with a mobile device. FIG. 11B is an enlarged conceptual diagram of a part of FIG.

  A mobile base 120 shown in FIG. 11A includes a plurality of side plates 121, and the side plates 121 are installed at predetermined intervals. The mobile base 120 is supplied with commercial power, and has a configuration capable of data communication with the PC 2 by wire or wireless. The side plate 121 is provided in the power transmission module 10 inside, and the side plate 121 is provided by installing the mobile device 122 including the power receiving module 40 in the mobile device installation area 123 in the mobile base 120 partitioned by the side plate 121. In this configuration, power transmission and data communication are performed between the power transmission module 10 in the mobile device and the power reception module 40 in the mobile device 122. FIG. 11B shows a conceptual diagram of magnetic coupling formed between the power transmission module 10 in the side plate 121 and the power reception module 40 in the mobile device 122. The above-described power supply and data communication are performed by magnetic coupling formed by the primary side coil 19 included in the power transmission module 10 in the side plate 121 and the secondary side coil 41 included in the power reception module 40 in the mobile device 122. Is called. The side plate 122 may be configured to be slidable in the lateral direction, and the size of the mobile device installation area 123 may be changed in accordance with the thickness of the mobile device 122 to be installed. With this configuration, the mobile base 120 corresponding to the mobile devices 122 having various thicknesses is formed. Furthermore, the side plate 121 may be a thing provided with the power transmission module 40 inside both sides. As a result, a plurality of mobile devices 122 can be installed in one mobile device installation area 123 to correspond to each other.

  When a plurality of mobile devices 122 are installed and data communication is performed between the plurality of mobile devices 122 and the PC 2, data corresponding to the mobile device installation area 123 of the mobile base 120 is stored in the PC 2 in advance. By adopting a configuration in which a storage location is prepared, it is possible to identify whether the data sent from the mobile base 120 to the PC 2 is data sent from the mobile device 122, and to prevent data confusion Can do. Conversely, when data is transmitted from the PC 2 to any mobile device 122 installed in the mobile base 120, a data storage location corresponding to the mobile device installation area 123 in which the mobile device 122 that is the transmission destination is installed. By transferring the data to be transmitted in advance, it is possible to avoid a situation where the data is erroneously transmitted to another mobile device 122.

  FIG. 12 shows another embodiment. FIG. 12A shows a conceptual diagram of charging a mobile device using an attache case that can charge the mobile device. FIG. 12B is a view of the attache case with the mobile device attached as viewed from the side.

  The attache case 130 shown in FIG. 12A includes a side plate 131 including the power transmission module 10 therein and an elastic band 132 for fixing the mobile device. The attache case 130 also has a power cord with an AC plug for supplying commercial power. When the AC plug is inserted into an AC outlet, the power transmission provided in the side plate 131 of the attache case 130 is provided. This is a mechanism for supplying commercial power to the module 10.

  As shown in FIG. 12A, the mobile device 133 is attached to a predetermined position of the attachment case 130 and the installation position of the mobile device 133 is fixed by the elastic band 132. At this time, as shown in FIG. 12B, the mobile device 133 includes a power receiving module 40 inside, and the secondary coil 41 in the power receiving module 40 and the power transmitting module 10 provided in the side plate 131. The installation position is fixed by the elastic band 132 so as to maintain high power transmission efficiency with the primary coil 19. When commercial power is supplied to the attache case 130 in such a state, magnetic coupling occurs between the power transmission module 10 and the power reception module 40 as described above, and power is supplied to the power reception module 40. As a result, the mobile device 133 can be charged while it is still in the attachment case 130 without being taken out of the attachment case 130 and connected to the AC adapter. Also in the present embodiment, the power transmission module 10 and the power reception module 40 may each include a plurality of coils, and power may be transmitted by selecting a combination of coils having the highest power transmission efficiency.

  Further, the attachment case 130 may be configured to include an area light emitting diode 94 that causes the side plate 131 to emit an optimal installation area of the mobile device 133, and is configured to be capable of data communication with the PC 2 by wire or wirelessly. Data communication may be performed between the PC 2 and the mobile device 133 installed at a predetermined position of the attache case 130. With this configuration, data can be transmitted from the PC 2 to the mobile device 133 while the mobile device 133 is still in the attachment case 130.

  FIG. 13 shows another embodiment of a cordless mouse. FIG. 13A is a conceptual diagram of the cordless mouse of the present embodiment including the power receiving module 40 inside. FIG. 13B is a block diagram showing the circuit configuration of the cordless mouse and mouse pad.

  The cordless mouse 140 includes therein a power receiving module 40 and a mouse circuit 143 for configuring the function of a conventional mouse electrically connected to the power receiving module 40. Further, a memory 144 is provided inside, and data can be stored in the memory 144.

  The mouse pad 141 includes the power transmission module 10 and is configured to be able to supply power to the power reception module 40 in the cordless mouse 140. The mouse pad 141 has a power cord provided with an AC plug for supplying commercial power. When the AC plug is inserted into an AC outlet, commercial power is supplied to the power transmission module 10 of the mouse pad 141. It is a mechanism to be done. Further, the mouse pad 141 is configured to allow data communication with the PC 2 by wire or wireless.

  When configured in this manner, the cordless mouse 140 placed on the mouse pad 141 to which commercial power is supplied supplies power from the power transmission module 10 in the mouse pad 141 to the power receiving module 40 provided therein. Receive. Since the supplied electric power is supplied to the mouse circuit 143, there is no need to provide a secondary battery for charging inside the cordless mouse 140, and the cordless mouse 140 itself can be reduced in weight.

  Further, since the mouse pad 141 is configured to allow data communication with the PC 2, the data sent from the PC 2 is given to the mouse pad 141, and the given data is sent to the primary side coil 19 and the secondary side coil. 40 can be stored in the memory 144 in the cordless mouse 140. Accordingly, if the cordless mouse 140 is carried, data can be freely carried.

  At this time, the power transmission module 10 provided in the mouse pad 141 includes a plurality of primary coils 19, and the primary side used for power transmission according to the position of the cordless mouse 140 on the mouse pad 141. A configuration in which the coil 19 is switched may be used. Further, the cordless mouse 140 may be provided with an insertion port into which an external storage medium can be inserted, and the data sent from the PC 2 may be stored in the storage medium inserted into the insertion port. Absent. Further, the mouse pad 141 may include an area light emitting diode 94 that emits light in the optimum installation area of the cordless mouse 140.

  FIG. 14 shows an electric slipper which is another embodiment. FIG. 14A is a conceptual diagram of an electric slipper according to the present embodiment including a rechargeable secondary battery therein. FIG. 14B is a block diagram showing a circuit configuration inside the electric slipper. The electric slipper of the present embodiment is configured to be charged by being placed on, for example, the power supply pad 100 of FIG. 9, and FIG. 14A also shows the power supply pad 100.

  An electric slipper 150 shown in FIG. 14A is provided with a heater 154, and the heater 154 generates heat to warm a user's feet wearing the electric slipper 150. As shown in FIG. 14B, the electric slipper includes a power receiving module 40 and a charging secondary battery 152 inside. The charging secondary battery 152 is charged by electric power supplied from the power receiving module 40. This is a configuration. In FIG. 14B, the secondary coil 41 is described separately from the power receiving module 40. In FIG. 14B, the secondary coil 41 is provided at two locations on the bottom surface and the top surface of the electric slipper 150.

  The electric slipper 150 includes a heater control unit 153 that adjusts the heating of the heater 154, and the heater control unit 153 controls the heater 154 to adjust the temperature of the electric slipper 150. Further, a temperature sensor 155 that measures the temperature of the surface of the electric slipper 150 is provided, and the temperature of the surface of the electric slipper 150 measured by the temperature sensor 155 is given to the heater control unit 153.

  When configured in this manner, while the electric slipper 150 is in use, the heater 154 is heated using the electric power supplied from the rechargeable secondary battery 152. Therefore, the electric slipper 150 is used for supplying electric power like a conventional electric slipper. A cord is unnecessary, and walking obstacles can be avoided. By installing the electric slipper 150 on the power supply pad 100 described above, power is supplied to the power transmission module 10 from a commercial power source supplied to the power supply pad 100, and the supplied power is supplied to the power reception module 40. The charging is possible by being given and sent to the charging secondary battery 152. At this time, as shown in FIG. 14B, the secondary coil 41 is provided at two locations on the bottom surface and the top surface of the electric slipper 150, so that either the bottom surface or the top surface of the power supply pad 100 is placed on the top surface. Even if it is installed so as to be in contact with the plate 101, it can receive electric power from the primary coil 19 in the power supply pad 100.

  Further, at this time, the electric slipper 150 includes a memory 151 capable of storing data, and the heater control unit 153 performs a heating control of the heater 154 based on the data stored in the memory 151. At this time, physical data such as a user's body temperature is input in advance by the PC 2, and this data is given from the PC 2 to the power supply pad 100 and sent to the memory 151 of the electric slipper 150. The electric slipper 150 calculates the target surface temperature of the electric slipper 150 based on the user's body data stored in the memory 151 by the heater control unit 153 and controls the heating of the heater 154 so as to maintain the temperature. . By comprising in this way, it becomes possible to warm a foot in the state maintained at the temperature suitable according to the user's body.

  FIG. 15 shows a narration terminal which is another embodiment. FIG. 15A is a conceptual diagram of the cordless narration terminal of this embodiment including the power receiving module 40 inside. FIG. 15B is a block diagram showing a circuit configuration of the cordless narration terminal and the installation charging spot.

  The narration terminal 160 is installed in, for example, a museum or an aquarium, and a voice explanation about a predetermined part where the narration terminal 160 is installed flows when the user hits the ear. The narration terminal 160 includes a memory 162 in which the voice explanation is stored and a narration playback circuit 161 provided in a conventional narration terminal, and also includes a power receiving module 40 and a charging secondary battery 163 therein. The installation spot 165 for installing the terminal includes the power transmission module 10 inside, and is configured to be supplied with commercial power from the outside. Further, the installation spot 165 is configured to allow data communication with the PC 2 in the same manner as the shared cradle 4 described above.

  The narration terminal 160 is installed in the installation spot 165 when the user is not using it, and is configured such that power is supplied from the power transmission module 10 in the installation spot 165 to the power reception module 40 in the terminal. The supplied power is supplied to the charging secondary battery 163 to be charged. When the user removes the narration terminal 160 from the installation spot 165 and puts it on his / her ear, the playback circuit 161 reads the voice description stored in the memory 162 and plays it using the power supplied from the secondary battery 163 for charging. Do. By being configured in this way, the terminal 160 is automatically charged while the user is not using it, so the risk of running out of the battery is reduced.

  Further, the audio data for explanation can be given from the PC 2 to the installation spot 165, and the voice data can be sent to the narration terminal 160 installed in the installation spot 165, so that the contents of the audio explanation change. In addition, by preparing new voice data in a predetermined storage location of the PC 2 in advance, new voice explanation data can be stored in the memory 162 together with charging. Furthermore, by providing the audio data storage location for each installation spot 165 in the PC 2 in advance, it is possible to transmit the audio data having the correct contents for each terminal to the narration terminal 160 installed at a different location. As a result, the labor can be reduced and the effect of preventing confusion of the voice data to be input can be expected as compared with the case where the narration terminal 160 is removed and data is individually input.

  FIG. 16 shows a karaoke remote control terminal which is another embodiment. FIG. 16A is an external view of a karaoke remote control terminal of the present embodiment including the power receiving module 40 inside. FIG. 16B shows a block diagram of a circuit configuration of a karaoke remote control terminal and a circuit configuration of a shared cradle for charging the karaoke remote control terminal. Note that the karaoke remote controller of the present embodiment is configured to be charged by being placed on, for example, the shared cradle 4 of FIG. 1, and FIG. 16A also shows the shared cradle 4.

  The conventional karaoke remote control terminal is provided with an operation button, and when a predetermined number corresponding to a song desired by the user is input and transmitted to a karaoke player (not shown), the karaoke player receives the transmitted number. Is selected and played, and the lyrics of the song are displayed on a monitor (not shown). The karaoke remote control terminal 170 of the present embodiment is in addition to the karaoke remote control circuit 171 for configuring the functions provided in the conventional karaoke remote control such as transmitting a number corresponding to the music desired by the user to the player. And a display circuit 172 for displaying characters and the like on the karaoke remote control terminal 170, a memory 174 for storing data, and a secondary battery 173 for charging. The power receiving module 40 that supplies electric power to the charging secondary battery 173 is provided inside. Furthermore, the karaoke remote control terminal 170 includes a display screen 175 for displaying predetermined information.

  When the karaoke remote control terminal 170 is placed on the shared cradle 4 to which a commercial voltage is supplied, the power transmission coil 19 in the power transmission module 10 provided in the shared cradle 4 and the power reception in the power reception module 40 provided in the karaoke remote control terminal 170 are received. Magnetic coupling occurs between the coil 41 and power is supplied to the power receiving module 40. This electric power is supplied to the charging secondary battery 173 to be charged. On the other hand, the shared cradle 4 has a configuration capable of data communication with the PC 2 and a configuration in which the PC 2 can access the information server 178 via the network 179. At this time, when new information such as new song information is sent from the information server 178, the PC 2 sends data of the new arrival information to the shared cradle 4, and the shared cradle 4 sends the new arrival data sent thereto. This is given to the memory 174 through the secondary coil 41 of the karaoke remote control terminal 170. In this way, the karaoke remote control terminal 170 sequentially writes the new arrival information in the memory 174 and reads the information written in the memory 174 from the display circuit 172, whereby the new arrival information is displayed on the display screen on the remote control terminal. The contents can be displayed.

  In the conventional karaoke system, the new arrival information is displayed only on the monitor, but this configuration makes it possible to display the information on the display screen 175 of the karaoke remote control terminal 170, which is far from the monitor. The karaoke user at the position can also recognize the new arrival information by confirming the display content on the remote control terminal 170.

  In the present embodiment, the PC 2 provides data to the shared cradle 4, but a communication karaoke terminal (not shown) may supply data to the shared cradle 4 instead of the PC 2. .

  In each of the above-described embodiments, the shared cradle 4, the power supply pad 100, the side plate 121, the side plate 131, the mouse pad 141, and the installation spot 165 may each include a plurality of power transmission modules 10. The power transmission module 10 may include a primary side coil group 19x including a plurality of primary side coils 19. Similarly, the electronic device 103, the mobile device 122, the mobile device 133, the cordless mouse 140, the electric slipper 150, the narration terminal 160, and the karaoke remote control terminal 170 may each include a plurality of power receiving modules 40. 40 may be provided with a secondary coil group 41x constituted by a plurality of secondary coils 41, or may be provided with an optimum placement position light emitting function for causing the optimum placement area to emit light by a light emitting diode. .

  Further, in each of the above-described embodiments, the common cradle 4, the power supply pad 100, the side plate 121, the side plate 131, the mouse pad 141, and the installation spot 165 are configured to be supplied with commercial power from the outside. A battery may be provided and power may be supplied from the battery. FIG. 17 shows a block diagram when the circuit is configured as described above. In the following description, the circuit configuration shown in FIG. 17 is provided in the shared cradle 4. However, the power supply pad 100, the side plate 121, the side plate 131, and the mouse pad are not limited to the shared cradle 4. The same applies to 141 and the installation spot 165.

  The block diagram of the power transmission module 10b shown in FIG. 17 includes the battery 181 and the battery 181 as well as removing the AC plug 7, the cord 6, the rectifier circuit 13, and the smoothing circuit 14 from the block diagram of the power transmission module 10 shown in FIG. Is output to the switching circuit 15. When configured in this manner, the configuration is the same as that in FIG. 2 except that direct current power is supplied from the battery 181. By providing the power transmission module 10 configured in this way inside the shared cradle 4, an electronic device (for example, PDA3) placed on the shared cradle 4 even in a place where there is no commercial outlet for supplying commercial power nearby. Can be supplied with electric power.

  The output from the battery 181 is connected to each circuit via a switch that can be controlled on and off, and the switch can be operated by the user from the outside. It can be turned off to reduce power consumption.

  The battery 181 may be a secondary battery and a commercial voltage may be applied to the input terminal of the secondary battery 181 via an AC adapter. With this configuration, the battery 181 included in the shared cradle 4 can be charged. At this time, the AC plug 7, the cord 6, the rectifier circuit 13, and the smoothing circuit 14 shown in FIG. 2 are provided, and the DC power source smoothed by the smoothing circuit 14 is input to the secondary battery 181. You can also.

  17 removes the AC plug 7, the cord 6, the rectifier circuit 13, and the smoothing circuit 14 from the block diagram shown in FIG. 2 and includes a battery 181, and the output of the battery 181 is given to the switching circuit 15. Although it is configured, it may be configured to include a light emitting diode that emits light in the optimum mounting area. That is, instead of the configuration of FIG. 17, the AC plug 7, the cord 6, the rectifier circuit 13, and the smoothing circuit 14 are removed from the block diagram shown in FIG. 8, and a battery 181 is provided. The output of the battery 181 is a switching circuit. The configuration given in FIG.

  In the power supply system of the present invention, a cradle, a power supply pad, a mouse pad, etc. with a built-in power transmission module can be used as a power transmission device, and a PDA, a mobile phone, a cordless mouse, an electric slipper, a karaoke remote controller with a built-in power receiving module Can be used as a power receiving device.

These are the conceptual diagrams of the electric power supply system in embodiment of this invention. These are block diagrams which show the electric constitution of the electric power supply system of this embodiment. These are flowcharts which show the flow of operation | movement when electric power supply is performed with respect to PDA from the shared cradle in FIG. These are figures which show the relationship between the relative position of a shared cradle and PDA in FIG. 1, and transmission efficiency. These are the tables | surfaces which showed the display state of the light emitting diode with which the shared cradle in FIG. 1 is provided. These are the flowcharts which show the flow of operation | movement when data transmission / reception is performed between PC and PDA in FIG. These are block diagrams which show a part of electrical structure of the power supply system of this embodiment. These are another block diagrams which show the electric constitution of the electric power supply system of this embodiment. These are the conceptual diagrams of the power supply pad which is another Example in the electric power supply system in embodiment of this invention. These are the conceptual diagrams of the showcase which is another Example in the electric power supply system in embodiment of this invention. These are the conceptual diagrams of the mobile base which is another Example in the electric power supply system in embodiment of this invention. These are the conceptual diagrams of the attache case which is another Example in the electric power supply system in embodiment of this invention. These are the conceptual diagrams of the cordless mouse which is another Example in the electric power supply system in embodiment of this invention. These are the conceptual diagrams of the electric slipper which is another Example in the electric power supply system in embodiment of this invention. These are the conceptual diagrams of the narration terminal which is another Example in the electric power supply system in embodiment of this invention. These are the conceptual diagrams of the karaoke remote control which is another Example in the electric power supply system in embodiment of this invention. These are another block diagrams which show the electric constitution of the electric power supply system of this embodiment. These are the external views which show the external appearance of the mobile phone carrying the conventional power supply system, and the AC adapter of the mobile phone. These are the external views which show the external appearance of the mobile device carrying the conventional power supply system, and the AC adapter of the mobile device. These are the external views which show the external appearance of the shaver carrying the conventional electric power supply system, and the AC adapter of the shaver.

Explanation of symbols

1 Power supply system 2 PC
3 PDAs
4 Common Cradle 5 LED Display Unit 6 Code 7 AC Plug 8 Line 10, 10a, 10b Power Transmission Module 13 Rectifier Circuit 14 Smoothing Circuit 15 Switching Circuit 16 Transformer 17 Rectifier Circuit 18 Smoothing Circuit 19 Primary Side Coil 19x Primary Side Coil Group 20 Power transmission control IC
DESCRIPTION OF SYMBOLS 21 Switching element 22 Switching element 23 Switching element 24 Power switching circuit 25 Light emitting diode 26 Light emitting diode 27 Resistance 28 Resistance 29 Switching element 30 Transformer 31 Switching element 32 LED display circuit 33 Carrier wave oscillation circuit 34 Modulation / demodulation circuit 35 Demodulation circuit 36 Power transmission decision circuit 37 Electricity determination circuit 38 Full charge determination circuit 40, 40a Power receiving module 41 Secondary side coil 41x Secondary side coil group 42 Smoothing capacitor 43 Rectifier circuit 44 Smoothing circuit 45 Modulation / demodulation circuit 46 Clock extraction circuit 47 Modulation circuit 48 Power-on reset Circuit 49 Voltage clamp circuit 50 Power reception control IC
51 Regulator 52 Charging Control Circuit 61 Switching Control Unit 62 Data Transmission Instruction Signal Generation Unit 63 Switching Element 64 Conversion Unit 70 Transformer 71 Signal Transmission Primary Coil 72 Coil Switching Circuit 73 Switching Control Unit 81 Signal Transmission Secondary Coil 82 Coil switching circuit 83 Switching control unit 84 Voltage measuring unit 85 Memory 91 Current sensor 92 Area LED display circuit 93 Switching element 94 Area light emitting diode 95 Resistance 100 Power supply pad 101 Table top plate 103 Electronic device 110 Showcase 120 Mobile base 121 Side plate 122 Mobile device 123 Mobile device installation area 130 Attache case 131 Side plate 132 Elastic band 133 Mobile device 140 Cordless mouse 141 Mouse pad 1 3 Mouse circuit 144 Memory 150 Electric slipper 151 Memory 152 Secondary battery 153 Heater controller 154 Heater 155 Temperature sensor 160 Narration terminal 161 Narration playback circuit 162 Memory 163 Secondary battery 165 Installation spot 170 Karaoke remote control terminal 171 Karaoke remote control circuit 172 Display circuit 173 Secondary battery 174 Memory 175 Display screen 178 Information server 179 Network 181 Battery 901 Mobile phone 902 AC adapter holder 903 AC adapter 904 Cord 911 Mobile device 912 AC adapter 913 cord 914 cord 915 AC plug 921 Shaver 922 AC adapter 923 Code 924 AC adapter

Claims (28)

A power supply system that supplies power from a power transmission device to a power reception device in a contactless manner,
A power transmission device having a primary side coil, and a primary side circuit that provides the primary side coil with a pulse voltage obtained by switching an input DC voltage;
A power receiving device having a secondary side coil magnetically coupled to the primary side coil, and a secondary side circuit for rectifying and smoothing an induced voltage induced in the secondary side coil;
The power transmission device includes a power adjustment unit that adjusts transmission power according to the amount of power that can be received by the power reception device, and is electrically connected to a PC by wire or wireless to transmit and receive electronic information. Is a possible configuration,
The power supply system characterized in that the electronic information can be transmitted between the power transmitting device and the power receiving device through magnetic coupling constituted by the primary side coil and the secondary side coil. The power transmission device receives a carrier wave oscillating unit that periodically applies a carrier wave to the primary side coil, and an information signal that is modulated and provided from the power receiving device in response to the carrier wave, via the primary side coil. A first demodulator for demodulating
The power reception device detects a carrier wave transmitted to the secondary coil, a carrier wave detection unit that extracts a clock signal necessary for modulation from the carrier wave detected by the carrier wave detection unit, and the carrier wave A first modulation unit that modulates the carrier wave based on the information signal using the clock signal when the detection unit detects the carrier wave, and transmits the modulated carrier wave via the secondary coil;
The power supply system according to claim 1, wherein the power adjustment unit adjusts transmission power based on an information signal demodulated by the first demodulation unit. When the electronic information is given from the PC, the power transmission device performs a predetermined modulation process in response to the carrier wave based on the electronic information and transmits the modulated information to the receiving device via the primary coil. 2 modulation units,
The power receiving apparatus includes a second demodulating unit that obtains the electronic information by performing a predetermined demodulation process on an electric signal supplied from the second modulating unit via the secondary coil. The power supply system according to claim 1 or 2. The power receiving device includes a chargeable secondary battery, and has a charge control unit that can recognize a charge state of the secondary battery,
The information signal includes a charge state of the secondary battery recognized by the charge control unit,
When the power transmission device confirms the state of charge by the first demodulating unit demodulating the modulated information signal given to the power transmission device, and when the state of charge is a fully charged state The power supply system according to claim 2, further comprising a full charge determination unit that performs determination to stop power transmission to the power receiving device. The information signal includes corresponding device information that is information indicating that the power receiving device is a device that can receive power from the power transmitting device,
When the first demodulator demodulates the modulated information signal given to the power transmission device, the power transmission device transmits power to the power receiving device if the corresponding device information can be acquired, and the corresponding device The power supply system according to any one of claims 2 to 4, further comprising: a power transmission availability determination unit that determines a content of not transmitting power to the power receiving device if information cannot be acquired. The power transmission device includes a carrier wave oscillating unit that periodically applies a carrier wave to the primary side coil, and a modulated signal that is subjected to a predetermined modulation process in response to the carrier wave based on an electrical signal supplied from the PC To the primary coil,
The power receiving device includes a second demodulator that receives an electric signal based on the modulation signal induced in the secondary coil via the magnetic coupling and demodulates the electric signal,
The power supply system according to any one of claims 1 to 5, wherein the electronic information is provided to the power receiving device based on a demodulated signal obtained by demodulating the second demodulating unit. The power receiving device includes a chargeable secondary battery, and has a charge control unit that can recognize a charge state of the secondary battery,
The information signal includes a charge state of the secondary battery recognized by the charge control unit,
The power transmission device confirms the state of charge by the first demodulating unit demodulating the modulated information signal given to the power transmission device, and receives the electronic information according to the state of charge. The power supply system according to claim 6, further comprising an electronic information transmission determination unit that determines whether to transmit to the device.   The power according to claim 7, wherein the electronic information transmission determination unit determines whether to transmit the electronic information to the power receiving device based on a capacity of the electronic information in addition to the charging state. Supply system. The power transmission device includes a light emitting diode that emits light based on a predetermined signal,
When the light emitting diode brings the power receiving device close to each other, the transmission power transmitted between the primary side coil and the secondary side coil is magnetically formed by the primary side coil and the secondary side coil. The power supply system according to any one of claims 1 to 8, wherein a range of transmission efficiency equal to or higher than a predetermined ratio or exceeding a predetermined ratio is emitted on the power transmission device. The power transmission device includes a plurality of primary coils and a first coil selector that selects one of the plurality of primary coils,
Voltage measurement in which the power receiving device measures a voltage induced at both ends of the secondary coil by magnetic coupling formed by the primary coil and the secondary coil selected by the first coil selector. Part
The primary coil and the secondary coil selected by the first coil selection unit when the voltage measured by the voltage measurement unit is greater than or equal to a predetermined value or exceeds a predetermined value are formed. The power supply system according to claim 1, wherein a voltage induced at both ends of the secondary coil by magnetic coupling is applied to the power receiving device. The power receiving device includes a plurality of the secondary side coils, and has a second coil selection unit that selects one of the plurality of secondary side coils,
The primary coil and the second coil selection unit selected by the first coil selection unit when the voltage measured by the voltage measurement unit is greater than or equal to a predetermined value or exceeds a predetermined value. The voltage induced at both ends of the secondary coil selected by the second coil selector by magnetic coupling formed with the secondary coil is applied to the power receiving device. The power supply system described in 1.   The power supply system according to any one of claims 1 to 11, wherein the DC voltage is obtained by rectifying and smoothing a commercial voltage input to the power transmission device.   The power transmission device includes a battery capable of storing electric charge inside the power transmission device, and the DC voltage uses an output voltage from the battery. The power supply system described. The battery is composed of a rechargeable secondary battery,
The power supply system according to claim 13, wherein a commercial voltage is input to the power transmission device, and a DC voltage obtained by rectifying and smoothing the input commercial voltage is charged to the battery.   The power transmission device according to any one of claims 1 to 14, wherein power is supplied to the power receiving device adjacent to the power reception device.   The power receiving device according to any one of claims 1 to 14, wherein electric power is supplied from the power transmitting device by being brought close to the power transmitting device according to claim 15. A cradle that includes at least one power transmission device therein, a first electronic device that includes at least one power reception device therein, and an electronic device that is electrically connected to the first electronic device by wire or wirelessly A PC that can send and receive information,
By bringing the first electronic device close to the cradle, power is supplied from the cradle to the first electronic device, and electronic information is transmitted between the PC and the first electronic device. The power supply system according to any one of claims 1 to 14, wherein transmission is possible. A showcase in which at least one power transmission device is incorporated in a top board, a first electronic device having at least one power receiving device therein, and the first electronic device are electrically connected by wire or wirelessly. And a PC that can send and receive electronic information,
By bringing the first electronic device close to the showcase, power is supplied from the showcase to the first electronic device, and an electronic device is connected between the PC and the first electronic device. The power supply system according to any one of claims 1 to 14, wherein information can be transmitted. A mobile base having a bookshelf structure in which at least one power transmission device is incorporated in a side plate, a mobile device having at least one power reception device therein, and the mobile base are electrically connected to the mobile base by wire or wirelessly. And a PC that can send and receive electronic information,
By installing the mobile device close to the side plate, power is supplied from the side plate to the mobile device, and electronic information can be transmitted between the PC and the mobile device. The power supply system according to claim 1, wherein the power supply system is provided. An attache case in which at least one power transmission device is incorporated in a side plate, a mobile device having at least one power receiving device therein, and electronic connection with the attache case by wired or wireless transmission / reception of electronic information And possible PCs,
By installing the mobile device close to the side plate, power is supplied from the side plate to the mobile device, and electronic information can be transmitted between the PC and the mobile device. The power supply system according to claim 1, wherein the power supply system is provided. A mouse pad in which at least one power transmitting device is incorporated, a cordless mouse having at least one power receiving device therein, and transmission / reception of electronic information by being electrically connected to the mouse pad by wire or wirelessly And a PC that can
By installing the cordless mouse close to the mouse pad, power is supplied from the mouse pad to the cordless mouse, and electronic information can be transmitted between the PC and the cordless mouse. The power supply system according to claim 1, wherein the power supply system is provided.   The power supply system according to claim 21, wherein the cordless mouse includes a storage capable of storing information, and the storage can store the electronic information provided from the PC. A power supply pad in which at least one power transmission device is incorporated, an electric slipper having at least one power reception device therein, and electronic information by being electrically connected to the power supply pad in a wired or wireless manner And a PC that can send and receive
By installing the electric slipper close to the power supply pad, electric power is supplied from the power supply pad to the electric slipper, and electronic information is transmitted between the PC and the electric slipper. The power supply system according to any one of claims 1 to 14, wherein the power supply system is possible. The electric slipper includes a heater to be heated, a heating control unit that controls heating of the heater, a temperature sensor that measures the temperature of the heater, and a storage that stores electronic information transmitted from the PC,
24. The power supply system according to claim 23, wherein the heating control unit performs heating control of the heater based on the electronic information stored in the storage and the temperature of the heater measured by the temperature sensor. . A narration terminal in which at least one power transmission device is incorporated, an installation spot in which at least one power reception device is provided and the narration terminal is installed, and the installation spot is electrically connected by wire or wirelessly And a PC capable of sending and receiving electronic information.
By installing the narration terminal at a predetermined position of the installation spot, power is supplied from the installation spot to the narration terminal, and electronic information can be transmitted between the PC and the narration terminal. The power supply system according to claim 1, wherein the power supply system is a power supply system. The narration terminal includes a reproduction circuit for reproducing predetermined information, and a storage for storing electronic information sent from the PC,
26. The power supply system according to claim 25, wherein the reproduction circuit reads and reproduces the electronic information stored in the storage. A cradle in which at least one power transmission device is incorporated, a karaoke remote control having at least one power reception device therein, and electronic transmission / reception of electronic information by being electrically connected to the karaoke remote control in a wired or wireless manner. And possible PCs,
By bringing the karaoke remote control close to the cradle, power is supplied from the cradle to the karaoke remote control, and electronic information can be transmitted between the PC and the karaoke remote control. The power supply system according to any one of claims 1 to 14. The karaoke remote control includes a display unit that reads and displays information, and a storage that stores electronic information transmitted from the PC,
The PC is configured to be connectable via an electric communication line to an information server in which all karaoke information is stored in a database structure,
The karaoke information acquired by the PC from the information server via the telecommunication line is transmitted from the PC to the karaoke remote controller, and the transmitted karaoke information is stored in the storage, and the display unit 28. The power supply system according to claim 27, wherein said karaoke information stored in said storage is read and displayed.

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