CN2666013Y - Non-contact inductive charging device for handheld devices - Google Patents

Abstract

The utility model relates to a non-contact induction type handheld device charging device, which comprises a power supply device, a handheld device and a charging device control circuit, wherein the power supply device and the handheld device respectively comprise an induction coil, a first induction coil in the power supply device can convert a received first electric energy into an electromagnetic field to emit a first signal, so that a second induction coil in the handheld device can receive induction to generate a third signal of induction voltage and induction current, and the third signal is transmitted to a power supply circuit to be processed to generate a fourth signal, and the fourth signal is transmitted to a charging circuit to generate a fifth signal, so that a power storage device can provide a second electric energy to the handheld device control circuit, in addition, the charging device control circuit can transmit a second signal to the power supply device according to the power using state or the executing state of a computer system, so as to control whether the power supply device performs the charging operation.

Description

Non-contact inductive charging device for handheld devices

technical field

The utility model relates to a non-contact induction charging device for a hand-held device, in particular to a device that can control and determine when the charging device is charged.

Background technique

With the advancement of technology, most of today's computers have multiple functions such as wireless data transmission, Internet access, fax machines, and game entertainment to meet the diverse needs of modern people and help people handle a lot of affairs. Computers are one of the indispensable tools for people. The development trend of computers today has tended to be integrated with infotainment. Today, multifunctional notebook computers and desktops that combine entertainment and infotainment functions can be seen on the market. It can be used with a handheld device wireless remote control, just like using a remote control to control audio and TV, users only need to press the wireless remote control to control the computer, so as to improve the user's convenience in operation.

Although it is very convenient and has many advantages to use the remote control to control the computer, its biggest disadvantage is that a battery must be installed to provide the power required for work. Because the power stored in the battery is limited, after the user uses the remote control for a certain period of time, The power of the battery will be exhausted immediately, and the user must replace the battery with an appropriate specification, which is quite inconvenient in use. In addition, there are notebook computers and desktop computers that are equipped with a remote control now, and a slot is provided on the main body for the remote control to be placed after use. However, the light, thin, and small notebook computers used The size of the remote control must be smaller than that of the general remote control so that it can be placed in the slot. Therefore, the batteries used in the remote control will also adopt a special specification with a smaller size, so that the user is quite safe when purchasing the device or replacing the battery. inconvenient.

In addition, although the battery used in the wireless remote control can be a rechargeable battery, when charging, the rechargeable battery must be taken out and placed in the charging stand for charging, or a special charging device must be used, and the power transmission port of the charging device must be plugged into the remote control. The charging port of the charger is used for charging, and it is quite inconvenient to use whether it is charged by a charging stand or a charging device. In addition, because the placement slot on the current computer host is only used for placing the remote control, most users will not place the remote control in place after use and place it at hand, so it will take time to find it when they want to use it next time; The wireless mouse for handheld devices also has the above-mentioned disadvantages.

Contents of the invention

The main purpose of this utility model is to provide a non-contact induction charging device for handheld devices, which utilizes the principle of electromagnetic induction to allow the handheld device to be charged in a non-contact induction manner when it is placed back into the power supply device for charging. In order to increase the convenience of use, and because the power supply device and the handheld device have no exposed electronic contacts for charging, the safety of charging can be improved.

Another purpose of the present utility model is to provide a non-contact induction charging device for handheld devices, which can determine whether the power supply device starts charging according to the current power supply status or execution status of the computer system, so as to improve power management effect.

Another object of the present utility model is to provide a non-contact induction charging device for handheld devices, which installs the power supply device for charging in the remote control slot of the computer host, forcing the user to use the charging device when the handheld device is not in use. , will be put back into the storage slot for charging, so that the user's usage habits can be improved, and the hand-held device can be avoided from being randomly placed after using it, which will increase the inconvenience when the next time you want to use it.

The utility model non-contact inductive charging device for handheld devices, its main structure includes a power supply device, a charging device control circuit and a handheld device such as a remote control or wireless mouse, the power supply device includes a first induction coil control circuit, its A first electric energy can be supplied to a first induction coil to convert the first electric energy into an induced electromagnetic field to emit a first signal for a second induction coil in the handheld device to receive, and the second induction coil receives The first signal of the electromagnetic field, and a third signal of the induced voltage and the induced current is induced to be transmitted to a power supply circuit, and the power supply circuit converts the third signal of the induced voltage and the induced current into a fourth signal, and the fourth signal is The power is transmitted to a charging circuit to generate a fifth signal and transmit it to a power storage device, so that the power storage device can supply a second power to a hand-held device control circuit, so that the hand-held device control circuit can operate, the hand-held device The control circuit is electrically connected to the control button of the handheld device to emit a control signal; a power supply device control circuit, which transmits a second signal to control the action of the first induction coil control circuit, and the power supply device control circuit can be based on the power supply of the computer system The use state or the execution state is used to send the second signal to determine whether the power supply device starts to charge the power storage device of the handheld device.

Wherein the first induction coil control circuit includes a control switch, a power supply, a DC-AC converter and a transformer, the power supply is electrically connected to the control switch to supply and transmit the first electric energy, and the control switch is based on The received first signal controls the conduction of the first electrical energy, the DC-AC converter converts the first electrical energy into AC electrical energy and transmits it to the transformer, and the transformer receives and processes the AC electrical energy and transmits it to the first Induction coil.

The power supply circuit includes a transformer, a filter and rectifier circuit and a DC-DC processor, the transformer receives the third signal, performs voltage transformation processing and transmits the DC power obtained by the filter and rectifier circuit for processing, and then transmits to the DC-DC processor to generate the fourth signal and transmit it to the charging circuit.

The utility model can maintain the power of the power storage device in the handheld device such as a remote control or a wireless mouse without replacing the battery or plugging in the power supply port of the charging device, so as to provide the power required for the operation of the handheld device and improve the convenience of use. And it can decide whether to charge according to the current power supply status or execution status of the computer, and it can also be combined with the placement slot of the computer host as a power supply device for charging, so that the user's habit in use can be improved.

Description of drawings

Fig. 1 is a structural block diagram of the present utility model.

Fig. 2 is the circuit diagram of the utility model.

Fig. 3 is a schematic diagram of the charging circuit of the present invention.

Fig. 4 is a three-dimensional schematic view of a preferred embodiment of the present invention.

Fig. 5 is a schematic perspective view of another preferred embodiment of the present invention.

Detailed ways

Please refer to Fig. 1, which is a structural block diagram of the present utility model; as shown in the figure, the present utility model utilizes the principle of electromagnetic induction to design an inductive power supply device 10, which conducts a hand-held device 40 in a non-contact induction mode. Charging, the handheld device 40 can be a remote controller or a wireless mouse, the power supply device 10 includes a first induction coil control circuit 20 and a first induction coil 30, when the handheld device 40 is placed on the power supply device 10 for charging, The first induction coil control circuit 20 can transmit a first electric energy to the first induction coil 30 , so that the first induction coil 30 will generate a first signal of an electromagnetic field due to the flow of voltage and current.

A second induction coil 45 of the handheld device 40 will receive the first signal of the electromagnetic field to induce a third signal that generates an induced voltage and an induced current, and transmits it to a power supply circuit 50, and the power supply circuit 50 will convert the AC type The third signal of the induced voltage is converted into a fourth signal, and the fourth signal is DC power, which is transmitted to a charging circuit 60, so that the charging circuit 60 sends a fifth signal to charge a power storage device 70, that is The fifth signal of the DC electric energy is stored in the electric storage device 70 through the charging circuit 60 to become a second electric energy. The electric storage device 70 is a rechargeable battery. In addition, the charging circuit 60 can detect the electric quantity of the electric storage device 70, The charging circuit 60 will not charge the power storage device 70 when the power is sufficient; the power storage device 70 can supply the second electric energy to the handheld device control circuit 80, so that the handheld device control circuit 80 can operate, and the handheld device control circuit 80 It is electrically connected with the control buttons of the handheld device 40 so as to send control signals according to the control buttons pressed by the user. The handheld device control circuit 80 can send control signals by means of infrared rays or radio.

In addition, the first induction coil control circuit 20 of the power supply device 10 will receive a second signal sent by a charging device control circuit 90. The second signal can be an Enable (valid) or Disable (invalid) signal to control the first induction coil. The action of the coil control circuit 20 is to control whether the first induction coil control circuit 20 supplies the first electric energy to the first induction coil 30. The charging device control circuit 90 is electrically connected with a computer system 95 to detect and know the current state of the computer system 95. For example, when the computer system 95 is a notebook computer, the charging device control circuit 90 can detect that the notebook computer is currently using an external AC power supply or is not using a battery, while the computer system 95 is a notebook computer. In the case of a desktop computer, the charging device control circuit 90 can detect the current execution status of the desktop computer, whether it is on or off, so that the charging device control circuit 90 can send a second signal to the first computer according to the detection result. The induction coil controls the circuit 20 to determine whether the power supply device 10 operates for charging, so as to improve the efficiency of power management.

In addition, the computer system 95 can detect the current power usage status or execution status of the computer system through the detection software, and will send a control signal to the charging device control circuit 90 according to the detection result, and the charging device control circuit 90 will This control signal sends a second signal to the first induction coil control circuit 20 to control the action. The detection software of the notebook computer can be used to detect the current power supply status of the notebook computer, whether it is for using an external AC power supply or for using The battery, and the detection software of the desktop computer can be used to detect the current execution state of the desktop computer, whether it is a normal execution state, a standby state or a hibernation state.

Please refer to Fig. 2, which is a circuit diagram of the present utility model; as shown in the figure, the first induction coil control circuit 20 of the present utility model includes a control switch 22, a power supply 24, a DC-AC converter 26 and a transformer 28, The power supply 24 is electrically connected with the control switch 22 to supply and transmit the first electric energy. The control switch 22 controls the conduction of the first electric energy according to the received second signal. When the charging device control circuit 90 sends the first electric energy to the control switch 22 When the second signal system is Enable, the control switch 22 will be in a conducting state, so that the power supply 24 will transmit the first electric energy to the DC-AC converter 26 through the control switch 22 to convert it into AC electric energy, and the AC electric energy will be processed by the transformer 28 , and transmitted to the first induction coil 30 to induce the first signal generating an electromagnetic field and transmit it for reception by the second induction coil 45 to induce a third signal generating an induced voltage and an induced current.

The power supply circuit 50 includes a transformer 52, a rectification filter circuit 54 and a DC-DC processor 56. The transformer 52 transforms the received third signal of the induced voltage and the induced current, and transmits the processed voltage to To the rectification and filtering circuit 54 for rectification and filtering to obtain DC power, and then the high-voltage DC power is transmitted to the connected DC-DC processor 56 for step-down processing to obtain the fourth signal of appropriate DC power to transmit Until the charging circuit 60 generates a fifth signal to charge the power storage device 70 to obtain a second electric energy.

The charging circuit 60 is a known circuit in the prior art, such as a product produced by Maxim Integrated, the model is MAX1898, and FIG. 3 is a schematic circuit diagram of the product.

The handheld device control circuit 80 is a well-known circuit in today's remote controllers.

The charging device control circuit is also a known circuit in the prior art, such as the NS 87591 KBC control circuit.

Fig. 4 is a three-dimensional schematic diagram of a preferred embodiment of the present utility model; Whenever the user finishes using the handheld device 40, in order to prevent the power of the internal power storage device 70 from being exhausted, the user will put the handheld device 40 back into the storage slot 97 for charging, so as to prevent the user from When the hand-held device 40 is not used, it is placed arbitrarily, so that when it is desired to use it next time, it is difficult to find it due to forgetting the placement position, resulting in the disadvantage of inconvenience in use; it can be seen from the above-mentioned similarity that the power supply device 10 can also be installed in the same position as shown in Figure 5 In the placement slot 97 provided by the notebook computer mainframe 99 shown.

To sum up, the non-contact inductive charging device for handheld devices of the present invention uses the principle of electromagnetic induction. When the handheld device 40 is placed on the power supply device 10, the second induction coil 45 in the handheld device 40 will receive the induction. The first signal of the electromagnetic field emitted by the first induction coil 30 of the power supply device 10 is processed by the power supply circuit 50, so that the charging circuit 60 can charge the power storage device 70 to maintain the power of the power storage device 70, which can solve the problem of In the prior art, in order to maintain the operation of the hand-held device 40 with power supply, the hand-held device 40 must reserve the battery for replacement or take out the rechargeable battery for charging, so as to improve the convenience of use, and the charging device control circuit 90 of the present invention can be According to the current power usage status or execution status of the computer system 95, it is decided whether to activate the power supply device 10 for charging, so as to improve the efficiency of power management. In addition, the utility model performs charging in a non-contact induction mode, so the power supply device 10 The electronic contacts for charging that are not exposed to the handheld device 40 can improve the safety of charging.

But the above is only a preferred embodiment of the utility model, and is not used to limit the implementation scope of the utility model, so all equal changes and modifications made according to the shape, structure, characteristics and spirit of the utility model , should be included in the scope of the claims of the present utility model.

Claims (40)

1, a kind of hand-held device charging device of non-contact induction type of notebook computer is characterized in that including:

One electric supply installation, include one first induction coil control circuit and one first induction coil, to this first induction coil, this first electric energy that this first inductive coil series will receive is converted to induction field to launch one first signal with one first electric energy transmitting in this first induction coil control circuit system;

One charging device control circuit, electrically connect with a notebook computer, can detect the power supply user mode of knowing that this notebook computer is present, be for using external AC power supply or, detecting the result with foundation and send a secondary signal to this first induction coil control circuit for using battery; And

Hand-hold device, include one second induction coil, a power supply circuit, a charging circuit, an electric storage device and hand-hold device control circuit, this second induction coil receives this first signal to produce one the 3rd signal to this power supply circuit, this power supply circuit receives the 3rd signal, produce one the 4th signal to this charging circuit, this charging circuit receives the 4th signal, produces one the 5th signal to this electric storage device, to provide one second electric energy to this hand-held device control circuit.

2, the hand-held device charging device of the non-contact induction type of notebook computer as claimed in claim 1, it is characterized in that: described charging device control circuit can receive the spy software of this notebook computer according to the detecting control signal that the result sent, this charging device control circuit sends this secondary signal to this first induction coil control circuit according to this control signal that receives, this spy software system is used to detect the present power supply user mode of notebook computer, is for using external AC power supply or being the use battery.

3, the hand-held device charging device of the non-contact induction type of notebook computer as claimed in claim 1, it is characterized in that: the described first induction coil control circuit, include a control switch, one power supply, an one DC-AC transducer and a transformer, this power supply and this control switch are electrically connected with this first electric energy of supply transmission, this control switch is according to this first signal that receives, control the conducting of this first electric energy, this DC-AC transducer is converted to this first electric energy AC energy and is sent to this transformer, and this transformer receives to be handled this AC energy and transfer to this first induction coil.

4, the hand-held device charging device of the non-contact induction type of notebook computer as claimed in claim 1, it is characterized in that: described power supply circuit includes a transformer, a filter rectifier and a DC-DC processor, this transformer receives the 3rd signal, handle and transmit and handle the acquisition direct current energy to carry out transformation through this filter rectifier, be resent to this DC-DC processor, to produce the 4th signal and to transfer to this charging circuit.

5, the hand-held device charging device of the non-contact induction type of notebook computer as claimed in claim 1 is characterized in that: the control button of described hand-held device control circuit and this hand-held device is electrical connected, to launch control signal.

6, the hand-held device charging device of the non-contact induction type of notebook computer as claimed in claim 5 is characterized in that: described hand-held device control circuit can use ultrared mode that control signal is launched.

7, the hand-held device charging device of the non-contact induction type of notebook computer as claimed in claim 5 is characterized in that: described hand-held device control circuit can use wireless mode that control signal is launched.

8, the hand-held device charging device of the non-contact induction type of notebook computer as claimed in claim 1 is characterized in that: described electric storage device is a rechargeable battery.

9, the hand-held device charging device of the non-contact induction type of notebook computer as claimed in claim 1, it is characterized in that: described hand-held device can be a remote controller.

10, the hand-held device charging device of the non-contact induction type of notebook computer as claimed in claim 1, it is characterized in that: described hand-held device can be a wireless mouse.

11, the hand-held device charging device of the non-contact induction type of notebook computer as claimed in claim 1 is characterized in that: described electric supply installation is installed in the set putting groove of this notebook computer main frame.

12, a kind of hand-held device charging device of non-contact induction type is characterized in that including:

One electric supply installation, include one first induction coil control circuit and one first induction coil, to this first induction coil, this first electric energy that this first induction coil will receive is converted to induction field to launch one first signal to this first induction coil control circuit with one first electric energy transmitting;

One charging device control circuit transmits the action that a secondary signal is controlled this first induction coil control circuit; And

Hand-hold device, it is to include one second induction coil, a power supply circuit, a charging circuit, an electric storage device and hand-hold device control circuit, this second induction coil receives this first signal to produce one the 3rd signal to this power supply circuit, this power supply circuit receives the 3rd signal, produce one the 4th signal to this charging circuit, this charging circuit receives the 4th signal, produce one the 5th signal to this electric storage device, to provide one second electric energy to this hand-held device control circuit.

13, the hand-held device charging device of non-contact induction type as claimed in claim 12, it is characterized in that: more include a notebook computer, this charging device control circuit and this notebook computer are electrically connected, can detect the present power supply user mode of this notebook computer, be for using external AC power supply or for using battery, and send this secondary signal to this first induction coil control circuit according to the detecting result.

14, the hand-held device charging device of non-contact induction type as claimed in claim 12, it is characterized in that: more include a notebook computer, this charging device control circuit and this notebook computer are electrically connected, with the spy software that can receive this notebook computer according to the detecting control signal that the result was sent, this charging device control circuit sends this secondary signal to this first induction coil control circuit according to this control signal that receives, this spy software is used to detect the present power supply user mode of this notebook computer, is for using external AC power supply or being the use battery.

15, the hand-held device charging device of non-contact induction type as claimed in claim 12, it is characterized in that: more include a desktop computer, this charging device control circuit and this desktop computer are electrically connected, can detect the present executing state of this desktop computer, be to be start or shutdown, this charging device control circuit sends this secondary signal to this first induction coil control circuit according to the detecting result.

16, the hand-held device charging device of non-contact induction type as claimed in claim 12, it is characterized in that: more include a desktop computer, this charging device control circuit and this desktop computer are electrically connected, with the spy software that can receive this desktop computer according to the detecting controlling signal that the result was sent, this charging device control circuit sends this secondary signal to this first induction coil control circuit according to this control signal that receives, this spy software system is used to detect the present executing state of this desktop computer, is to be normal execution, the state of standby or dormancy.

17, the hand-held device charging device of non-contact induction type as claimed in claim 12, it is characterized in that: the described first induction coil control circuit, system includes a control switch, one power supply, an one DC-AC transducer and a transformer, this power supply system is electrically connected with this first electric energy of supply transmission with this control switch, this control switch system is according to this first signal that receives, control the conducting of this first electric energy, this DC-AC transducer system is converted to this first electric energy AC energy and is sent to this transformer, and this transformer system receives and handles this AC energy and transfer to this first induction coil.

18, the hand-held device charging device of non-contact induction type as claimed in claim 12, it is characterized in that: described power supply circuit includes a transformer, a filter rectifier and a DC-DC processor, this transformer receives the 3rd signal, handle and transmit and handle the acquisition direct current energy to carry out transformation through this filter rectifier, be resent to this DC-DC processor, to produce the 4th signal and to transfer to this charging circuit.

19, the hand-held device charging device of non-contact induction type as claimed in claim 12 is characterized in that: the control button of described hand-held device control circuit and this hand-held device is electrical connected, to launch control signal.

20, the hand-held device charging device of non-contact induction type as claimed in claim 19 is characterized in that: described hand-held device control circuit can use ultrared mode that control signal is launched.

21, the hand-held device charging device of non-contact induction type as claimed in claim 19 is characterized in that: described hand-held device control circuit can use wireless mode that control signal is launched.

22, the hand-held device charging device of non-contact induction type as claimed in claim 12 is characterized in that: described electric storage device is a rechargeable battery.

23, the hand-held device charging device of non-contact induction type as claimed in claim 12, it is characterized in that: described hand-held device can be a remote controller.

24, the hand-held device charging device of non-contact induction type as claimed in claim 12, it is characterized in that: described hand-held device can be a wireless mouse.

25, the hand-held device charging device of non-contact induction type as claimed in claim 12 is characterized in that: described electric supply installation is installed in the set putting groove of a host computer.

26, a kind of hand-held device charging device of non-contact induction type, it is characterized in that comprising: an electric supply installation, hand-hold device and a charging device control circuit, this electric supply installation can utilize contactless electromagnetic induction, and the electric storage device of hand-hold device is charged, this charging device control circuit transmits a signal, to control the action of this electric supply installation.

27, the hand-held device charging device of non-contact induction type as claimed in claim 26, it is characterized in that: described electric supply installation includes one first induction coil control circuit and one first induction coil, this first induction coil control circuit with one first electric energy transmitting to this first induction coil, this first electric energy that this first induction coil will receive is converted to induction field to launch one first signal, and this charging device control circuit transmits a secondary signal to control the action of this first induction coil control circuit; This hand-held device includes one second induction coil, a power supply circuit, a charging circuit, an electric storage device and hand-hold device control circuit, this second induction coil receives this first signal to produce one the 3rd signal to this power supply circuit, this power supply circuit system receives the 3rd signal, produce one the 4th signal to this charging circuit, this charging circuit system receives the 4th signal, produce one the 5th signal to this electric storage device, to provide one second electric energy to this hand-held device control circuit.

28, the hand-held device charging device of non-contact induction type as claimed in claim 27, it is characterized in that: more include a notebook computer, this charging device control circuit and this notebook computer are electrically connected, can detect the present power supply user mode of this notebook computer, be for using external AC power supply or, detecting the result with foundation and send this secondary signal to this first induction coil control circuit for using battery.

29, the hand-held device charging device of non-contact induction type as claimed in claim 27, it is characterized in that: more include a notebook computer, this charging device control circuit and this notebook computer are electrically connected, with the spy software that can receive this notebook computer according to the detecting control signal that the result was sent, this charging device control circuit sends this secondary signal to this first induction coil control circuit according to this control signal that receives, this spy software system is used to detect the present power supply user mode of this notebook computer, is for using external AC power supply or being the use battery.

30, the hand-held device charging device of non-contact induction type as claimed in claim 27, it is characterized in that: more include a desktop computer, this charging device control circuit and this desktop computer are electrically connected, can detect the present executing state of this desktop computer, be to be start or shutdown, this charging device control circuit sends this secondary signal to this first induction coil control circuit according to the detecting result.

31, the hand-held device charging device of non-contact induction type as claimed in claim 27, it is characterized in that: more include a desktop computer, this charging device control circuit and this desktop computer are electrically connected, with the spy software that can receive this desktop computer according to the detecting control signal that the result was sent, this charging device control circuit sends this secondary signal to this first induction coil control circuit according to this control signal that receives, this spy software system is used to detect the present executing state of this desktop computer, is to be normal execution, the state of standby or dormancy.

32, the hand-held device charging device of non-contact induction type as claimed in claim 27, it is characterized in that: the described first induction coil control circuit, include a control switch, one power supply, an one DC-AC transducer and a transformer, this power supply and this control switch are electrically connected with this first electric energy of supply transmission, this control switch is according to this first signal that receives, control the conducting of this first electric energy, this DC-AC transducer is converted to this first electric energy AC energy and is sent to this transformer, and this transformer receives this AC energy of processing and transfers to this first induction coil.

33, the hand-held device charging device of non-contact induction type as claimed in claim 27, it is characterized in that: described power supply circuit includes a transformer, a filter rectifier and a DC-DC processor, this transformer receives the 3rd signal, handle and transmit and handle the acquisition direct current energy to carry out transformation through this filter rectifier, be resent to this DC-DC processor, to produce the 4th signal and to transfer to this charging circuit.

34, the hand-held device charging device of non-contact induction type as claimed in claim 27 is characterized in that: the control button of described hand-held device control circuit and this hand-held device is electrical connected, to launch control signal.

35, the hand-held device charging device of non-contact induction type as claimed in claim 34 is characterized in that: described hand-held device control circuit can use ultrared mode that control signal is launched.

36, the hand-held device charging device of non-contact induction type as claimed in claim 34 is characterized in that: described hand-held device control circuit is to use wireless mode that controlling signal is launched.

37, the hand-held device charging device of non-contact induction type as claimed in claim 26 is characterized in that: described electric storage device is a rechargeable battery.

38, the hand-held device charging device of non-contact induction type as claimed in claim 26, it is characterized in that: described hand-held device can be a remote controller.

39, the hand-held device charging device of non-contact induction type as claimed in claim 26, it is characterized in that: described hand-held device can be a wireless mouse.

40, the hand-held device charging device of non-contact induction type as claimed in claim 26 is characterized in that: described electric supply installation is installed in the set putting groove of a host computer.

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