TWI483620B - Method for providing charging, charging control system thereof and electronic device having the same - Google Patents

Description

Method for providing charging, charging control system thereof and electronic device having the same

The present invention relates to a method of providing charging, and more particularly to a method of providing charging by charging an external device through an audio transmission hole of an electronic device.

With the advancement of technology, the functions of portable electronic products are becoming more and more powerful, and the peripheral products related to their use are becoming more and more diversified, such as: Bluetooth headset, Bluetooth speaker; wireless keyboard, active touch Control pen...etc.

However, these peripheral products must be used in the presence of electricity, so they must be recharged after a period of use. Taking the active stylus as an example, when the user can find out the available external power source for a while, the trouble can be solved if the portable electronic product itself can be charged.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a method of charging and charging and a charging control system for performing the same.

Another object of the present invention is to provide an electronic device that can charge an external device through its own audio transmission hole.

To achieve the primary object of the present invention, a method of providing charging according to the present invention can be used to cause an electronic device to charge an external device through an audio transmission hole. The external device includes a connector for inserting an audio transmission hole, and when the connector is inserted into the audio transmission hole, the connector is connected in parallel with the signal generating switch of the electronic device, and is connected in series with the voltage dividing circuit of the electronic device, so that the voltage dividing circuit is When the signal generation switch is not turned on, the divided piezoelectric position is generated according to the impedance value of the joint. The method for providing charging of the present invention comprises the steps of: detecting whether the signal generating switch generates an interrupt signal; if so, the control signal generating switch is non-conducting; detecting the divided piezoelectric position, thereby determining whether the external device is based on the divided piezoelectric position When the external device is determined to be the device to be charged, the power supply module of the control electronic device outputs a power signal to the device to be charged to charge the device to be charged.

The charging control system of the present invention is suitable for use in an electronic device such that the electronic device can charge the external device through the audio transmission hole. The external device includes a connector for inserting an audio transmission hole, and when the connector is inserted into the audio transmission hole, the connector is connected in parallel with the signal generating switch of the electronic device, and is connected in series with the voltage dividing circuit of the electronic device, so that the voltage dividing circuit is When the signal generation switch is not turned on, a minute piezoelectric position is generated according to the impedance value of the joint. The charging control system of the present invention comprises an interrupt detection module, a switch control module, a voltage division detection module, a judgment module and a power output control module. Interrupt detection mode The group is used to detect whether the signal generation switch generates an interrupt signal. The switch control module is configured to generate a switch that does not conduct according to the interrupt signal control signal. The voltage dividing detection module is configured to detect the divided piezoelectric position when the signal generating switch is not turned on. The judging module is configured to determine whether the external device is the device to be charged according to the piezoelectric position. The power output control module is configured to: when the determining module determines that the external device is the device to be charged, the power supply module of the control electronic device outputs a power signal to the device to be charged.

In order to achieve another object of the present invention, an electronic device of the present invention includes an audio transmission hole, a signal generation switch, a voltage dividing circuit, a power supply module, and a control unit. The audio transmission hole is for the connector to be inserted. The signal generating relationship is electrically connected to the audio transmission hole for generating an interrupt signal when the connector is inserted into the audio transmission hole. The voltage dividing circuit is electrically connected to the audio transmission hole, and when the connector is inserted into the audio transmission hole, the connector is connected in parallel with the signal generating switch, and is connected in series with the voltage dividing circuit, so that the voltage dividing circuit is not turned on when the signal generating switch is not turned on. A minute piezoelectric position is generated based on the impedance value of one of the joints. The power supply module is electrically connected to the audio transmission hole and the voltage dividing circuit for generating a power signal. The control unit is electrically connected to the signal generating switch and the power supply module for controlling the signal generating switch, and detecting the divided piezoelectric position when the signal generating switch is not turned on, thereby determining whether to control the power supply mode according to the divided piezoelectric position. The group outputs a power signal to the external device.

1‧‧‧Electronic device

10‧‧‧ audio transmission hole

E1‧‧‧ first shrapnel

E2‧‧‧Second shrapnel

20‧‧‧Signal generation switch

S‧‧‧ source extreme

G‧‧‧ gate extreme

D‧‧‧汲 Extreme

30‧‧‧voltage circuit

31,32‧‧‧resistance

40‧‧‧Power supply module

41‧‧‧Battery

42‧‧‧Power Management Wafer

50‧‧‧Operation processing device

60‧‧‧Path switching unit

61‧‧‧First switch

62‧‧‧Second switch

70‧‧‧Control unit

71‧‧‧Charging control system

711‧‧‧Interrupt Detection Module

712‧‧‧Switch Control Module

713‧‧‧Voltage detection module

714‧‧‧Judgement module

715‧‧‧Power Output Control Module

716‧‧‧Optical output module

717‧‧‧Path Switch Control Module

90‧‧‧External devices

91‧‧‧Connectors

911‧‧‧First metal ring

912‧‧‧Second metal ring

913‧‧‧ Third metal ring

914‧‧‧fourth metal ring

V‧‧‧voltage endpoint

P1‧‧‧ audio transmission path

P2‧‧‧Charging path

R‧‧‧ impedance

1 is a block diagram of an apparatus of an electronic device of the present invention.

2 is a system architecture diagram of a charging control system of the present invention.

3 is a flow chart showing the steps of the method of providing charging of the present invention.

Fig. 4 is a schematic diagram showing an analog circuit in which a connector is electrically connected to an audio transmission hole.

The above and other objects, features and advantages of the present invention will become more <

Please refer to Figure 1 and Figure 2 below. 1 is a device architecture diagram of an electronic device of the present invention; and FIG. 2 is a system architecture diagram of a charging control system of the present invention.

As shown in FIG. 1 , the electronic device 1 of the present invention can be electrically connected to the external device 90 . The external device 90 includes a joint 91. The joint 91 includes a first metal ring 911, a second metal ring 912, a third metal ring 913, and a fourth metal ring 914. The first metal ring 911 and the second metal ring 912 are used to receive an audio signal. The third metal ring 913 is grounded. The fourth metal ring 914 is used to input an audio signal. Further, the connector 91 of the external device 90 of the present invention is an existing earphone connector or a speaker connector, but the external device 90 is not limited to an earphone or a speaker. If the external device 90 is an earphone or a speaker, the first metal ring 911 is used to receive the audio signal, and the audio signal is output from the left channel of the earphone, and the second metal ring 912 is used to receive the audio signal, and then the audio signal is self-initiated. Right channel of the headset The fourth metal ring 914 can be used to transmit an audio signal input by the user through the microphone. In the embodiment of the present invention, the impedance values of the joints 91 of the different external devices 90 are different. In the specific embodiment of the present invention, the electronic device 1 is a smart phone, but the invention is not limited thereto.

In an embodiment of the present invention, the electronic device 1 of the present invention includes an audio transmission hole 10, a signal generation switch 20, a voltage dividing circuit 30, a power supply module 40, an audio processing device 50, a path switching unit 60, and a control. Unit 70.

In an embodiment of the invention, the audio transmission hole 10 includes a first elastic piece E1 and a second elastic piece E2. The audio transmission hole 10 is inserted into the joint 91 of the external device 90. Further, the audio transmission hole 10 must be a headphone hole or a horn hole corresponding to the joint 91.

In one embodiment of the present invention, the signal generating switch 20 is electrically connected to the audio transmission hole 10, and the signal generating switch 20 is configured to generate an interrupt signal when the connector 91 is inserted into the audio transmission hole 10. In a specific embodiment of the present invention, the signal generating switch 20 is a Metal-Oxide Semiconductor Field-Effect Transistor (MOSFET), but the invention is not limited thereto. The technical content of the signal generation switch 20 to generate an interrupt signal will be described in more detail below, and therefore will not be further described herein.

In an embodiment of the invention, the voltage dividing circuit 30 includes two resistors 31, 32 connected in series with each other. The voltage dividing circuit 30 is electrically connected to the audio transmission hole 10 and the signal generating switch 20. As shown in Figure 1, when the connector of the external device 90 91 is inserted into the audio transmission hole 10, since the source terminal S of the signal generating switch 20 and the third metal ring 913 of the connector 91 are grounded together, the connector 91 and the signal generating switch 20 form a parallel state, and the voltage dividing circuit 30 is The signal generating switch 20 and the joint 91 are connected in series.

In one embodiment of the present invention, the power supply module 40 includes a battery 41 and a power management chip 42 (Power Management IC, PMIC), wherein the power management chip 42 is coupled to the audio transmission hole 10, the voltage dividing circuit 30, and the audio processing. The device 50 and the control unit 70 are electrically connected. The power supply module 40 is configured to generate a power signal.

In an embodiment of the present invention, the audio processing device 50 is electrically connected to the audio transmission hole 10, and the audio processing device 50 is configured to receive the audio signal transmitted by the control unit 70, and decode the audio signal to generate an audio signal. The audio signal is then transmitted through the audio transmission hole 10 to the external device 90.

In an embodiment of the invention, the path switching unit 60 includes a first switch 61 and a second switch 62. The first switch 61 is electrically connected to the audio transmission hole 10 and the audio processing device 50 for turning on or off the audio transmission path P1. The second switch 62 is electrically connected to the audio transmission hole 10 and the power supply module 40 for turning on or off the charging path P2.

In an embodiment of the present invention, the control unit 70 is electrically connected to the signal generating switch 20, the power supply module 40, the audio processing device 50, and the path switching unit 60. Control unit 70 includes a charge control system 71. As shown in FIG. 2, in one embodiment of the present invention, the charging control system 71 includes an interrupt detection module 711, a switch control module 712, a voltage division detection module 713, a determination module 714, and a power output control. The module 715, the audio output module 716, and the path switching control module 717.

In an embodiment of the invention, the interrupt detection module 711 is configured to detect whether the signal generation switch 20 generates an interrupt signal. The switch control module 712 is configured to: when the interrupt detection module 711 detects the interrupt signal, the switch 20 is not turned on according to the interrupt signal. The voltage dividing detection module 713 is configured to detect the divided piezoelectric position generated by the voltage dividing circuit 30 when the signal generating switch 20 is not turned on. The determining module 714 is configured to determine the external device 91 as a device to be charged, a sound playing device or other device according to the detected partial piezoelectric position. The power output control module 715 is configured to control the power supply module 40 to output a power signal to the device to be charged when the external device 91 is the device to be charged, to charge the device to be charged. The audio output module 716 is configured to output an audio source signal when the external device 91 is a sound playback device. The path switching control module 717 is configured to control the path switching unit 60 to turn on or off the audio transmission path P1 or the charging path P2. The technical contents of the detection of the divided piezoelectric position and the discrimination of the external device 91 will be described in more detail below, and will not be described here.

It should be noted that, in an embodiment of the present invention, each module in the charging control system 71 may be configured as a software program, a firmware, or a combination thereof, or may be configured by a circuit loop or other suitable type. Wherein, when any module is implemented by using software, the system can be read on a computer readable Storage media. In addition to the individual type configuration, each module can also be combined with the type configuration.

Please refer to FIG. 3 and refer to FIGS. 1, 2 and 4 together. 3 is a flow chart showing the steps of the method for providing charging according to the present invention. The steps of the method for providing charging of the present invention will be sequentially described below with reference to FIGS. 1, 2 and 4. It should be noted that the method for providing charging disclosed in the present invention is described below by taking the electronic device 1 as an example, but the method is not limited to the electronic device 1 described above.

First, step S1 is performed: detecting whether the signal generating switch generates an interrupt signal.

As shown in FIG. 1, when the connector 91 of the external device 90 is inserted into the audio transmission hole 10, the first metal ring 911 contacts the first elastic piece E1 and the second elastic piece E2, so that the first elastic piece E1 and the second elastic piece E2 are electrically connected to each other. Since the source terminal S of the signal generating switch 20 is grounded, and the control unit 70 provides a voltage signal greater than the threshold voltage to the gate terminal G of the signal generating switch 20, between the source terminal S and the 汲 terminal D of the signal generating switch 20 In the case that the channel is turned on, the control unit 70 can detect a low potential signal (ie, an interrupt signal). Therefore, the control unit 70 can determine whether an external device 90 is inserted into the audio transmission hole 10 of the electronic device 1 through the connector 91 by interrupting whether the signal is generated.

Step S2 is performed: the control signal generating switch is not turned on.

In step S2, since the connector 91 is inserted into the audio transmission hole 10, the connector 91 is connected in parallel with the signal generation switch 20. Therefore, before performing the following steps, it is necessary to The path of the signal generating switch 20 is turned off, so that the control unit 70 can detect the partial piezoelectric formed by the voltage dividing circuit 30 and the joint 91 in series at the voltage dividing end point V shown in FIG. Bit. Therefore, after the interrupt signal is generated, the control unit 70 stops supplying power to the gate terminal G of the signal generating switch 20 according to the interrupt signal. Once the signal generating switch 20 is in the off state, the source terminal S of the signal generating switch 20 and the 汲 terminal D cannot be turned on, that is, an open circuit is formed between the two ends without being turned on.

Step S3 is performed to detect the divided piezoelectric position to determine whether the external device is a device to be charged or a sound playing device according to the divided piezoelectric position.

As described above, the impedance values of the connectors 91 of the different external devices 90 are different. Therefore, as shown in FIG. 4, once the signal generating switch 20 is not turned on, a certain voltage is outputted to the divided piezoelectrics through the power supply module 40. A series of piezoelectric positions can be detected on the voltage dividing end point V shown in FIG. 4 in the series path formed by the path 30 and the connector 91, and the divided piezoelectric position will follow the joint 91 in series. The impedance value changes (the impedance R of the broken line portion indicates that the first metal ring 911 of the joint 91 is impedance, and since the third metal ring 913 of the joint 91 is grounded, the impedance R shown is grounded; the broken line portion is Part of the virtual circuit diagram of the connector 91).

For example, suppose the power supply module 40 outputs a constant voltage of 1.8 volts, the resistance value of the resistor 31 is 100,000 ohms, and the resistance 32 is 10,000 ohms, and the impedance value of the joint 91 of a general sound playback device (for example, a headphone) is about 32 ohms, so if the sound player is plugged into the connector 21 When transmitting the hole 10, according to the partial pressure formula, the divided piezoelectric position generated at the voltage dividing end V is about: 1.8*(32+10000)/(100000+10000+32)=0.16 volt. If it is the device to be charged, if the impedance of the connector 91 of the device to be charged is 100,000 ohms, the voltage dividing position generated by the voltage dividing terminal V is about: 1.8*(100000+10000)/(100000+10000+100000) ) = 0.94 volts.

Therefore, according to the difference of the detected partial piezoelectric positions, the control unit 70 can determine whether the external device 90 is a device to be charged or a sound playing device, or neither. Furthermore, the control unit 70 compares the measured partial voltage bits with the plurality of divided voltage information stored in the database, and if one of them is met, performs the following according to the detected voltage value. One of the steps. Conversely, if the detected partial voltage position does not match the partial pressure information in the database, that is, it is determined that the external device 90 is neither a sound playback device nor a device to be charged, then the control unit 70 does not Perform any action.

If it is determined that the external device 90 is the device to be charged, the step S4 is executed: the control path switching unit turns on the charging path, and disconnects the audio transmission path, and controls the power supply module output. Power signal to the device to be charged.

When the control unit 70 detects the divided piezoelectric position of the voltage dividing end point V, and discriminates the external connection according to the divided piezoelectric position When the device 90 is the device to be charged, the control unit 70 then controls the second switch 62 in the path switching unit 60 to be turned on to turn on the charging path P2, and controls the first switch 61 to be turned off to disconnect the audio transmission path P1 while controlling. The power supply module 40 outputs a power signal, which is transmitted to the fourth metal ring 914 of the connector 91 through the charging path P2 to charge the external device 90 (ie, the device to be charged). The purpose of disconnecting the audio transmission path P1 is to prevent the power signal from flowing back to the audio processing device 50.

Step S5 is executed: the control path switching unit turns on the audio transmission path, and disconnects the charging path, and simultaneously outputs the sound source signal.

When the control unit 70 detects the divided piezoelectric position of the voltage dividing end point V and determines that the external device 90 is the sound playing device according to the divided piezoelectric position, the control unit 70 then controls the first of the path switching units 60. The switch 61 is turned on, and controls the second switch 62 to be turned off, and simultaneously outputs the sound source signal. The sound source signal is transmitted to the audio processing device 50 and decoded to form an audio signal. The sound signal can be transmitted to the external device 90 through the audio transmission hole 10, the first metal ring 911 and the second metal ring 912 (ie, the sound playing device) ) Output. In addition, when the sound playback device is attached to the microphone, the audio signal input by the user through the microphone can be transmitted to the audio processing device 50 through the fourth metal ring 914 of the connector 91 and the audio transmission path P1 for encoding.

It should be noted that the method for controlling the power supply disclosed in the present invention is not limited to the order of the above steps, and the order of the above steps may be added as long as the object of the present invention can be achieved. change.

It can be seen from the above description that the earphone hole (or the horn hole) of the electronic device 1 of the present invention can be used not only to transmit audio but also to output a power signal to charge the external device 90. Since there is no need to additionally add any jack on the electronic device 1, the appearance of the electronic device 1 is not affected, and when the external device 90 is out of power, the electronic device 1 itself can be used to charge the external device 90 in time, without having to look for other external parts. The power supply effectively solves the problems encountered in the prior art.

To sum up, the present invention, regardless of its purpose, means and efficacy, is showing its distinctiveness in the characteristics of the prior art, and asks your review board to inspect the patent as soon as possible, and to benefit the society. It should be noted that the various embodiments described above are merely illustrative for ease of explanation, and the scope of the claims is intended to be limited by the scope of the claims.

1‧‧‧Electronic device

10‧‧‧ audio transmission hole

E1‧‧‧ first shrapnel

E2‧‧‧Second shrapnel

20‧‧‧Signal generation switch

S‧‧‧ source extreme

G‧‧‧ gate extreme

D‧‧‧汲 Extreme

30‧‧‧voltage circuit

31,32‧‧‧resistance

40‧‧‧Power supply module

41‧‧‧Battery

42‧‧‧Power Management Wafer

50‧‧‧Operation processing device

60‧‧‧Path switching unit

61‧‧‧First switch

62‧‧‧Second switch

70‧‧‧Control unit

71‧‧‧Charging control system

90‧‧‧External devices

91‧‧‧Connectors

911‧‧‧First metal ring

912‧‧‧Second metal ring

913‧‧‧ Third metal ring

914‧‧‧fourth metal ring

P1‧‧‧ audio transmission path

P2‧‧‧Charging path

Claims (9)

A charging method for charging an electronic device to an external device through an audio transmission hole, the external device includes a connector for inserting the audio transmission hole, and when the connector is inserted into the audio transmission hole The connector is connected in parallel with a signal generating switch of the electronic device, and is connected in series with a voltage dividing circuit of the electronic device, so that the voltage dividing circuit generates an impedance value according to one of the connectors when the signal generating switch is not turned on. One of the piezoelectric positions, the method includes the steps of: detecting whether the signal generating switch generates an interrupt signal; if so, controlling the signal generating switch to be non-conducting; detecting the divided piezoelectric position, according to the divided piezoelectric position Determining whether the external device is a device to be charged; if so, controlling a power supply module to output a power signal to the device to be charged to charge the device to be charged. The method of claim 1, wherein the method further comprises the step of outputting an audio source signal if the external device is determined to be a sound playback device according to the voltage division position. The method of claim 2, wherein the electronic device further comprises a path switching unit, wherein the path switching unit is configured to turn on or off an audio transmission path or a charging path; and detect the divided position After the method further includes the following steps: if the external device is determined to be the device to be charged, controlling the path switching unit to turn on the charging path, and disconnecting the And an audio transmission path; and if it is determined that the external device is the sound playback device, controlling the path switching unit to turn on the audio transmission path and disconnecting the charging path. A charging control system is applicable to an electronic device such that the electronic device can charge an external device through an audio transmission hole, the external device includes a connector for inserting the audio transmission hole and inserting the connector In the audio transmission hole, the connector is connected in parallel with a signal generating switch of the electronic device, and is connected in series with a voltage dividing circuit of the electronic device, so that the voltage dividing circuit is not conductive when the signal generating switch is turned on, according to the connector One of the impedance values generates one of the piezoelectric bits. The charging control system includes: an interrupt detection module for detecting whether the signal generating switch generates an interrupt signal; and a switch control module for the interrupt according to the interrupt The signal control switch generates a non-conducting switch; a voltage-dividing detection module is configured to detect the sub-voltage position when the signal-generating switch is non-conducting; and a determining module for discriminating the voltage according to the sub-voltage position Whether the external device is a device to be charged; and a power output control module for controlling a power supply module to output a power message when the external device is the device to be charged The device to be charged to the device to be charged is charged. The charging control system of claim 4, further comprising an audio output module, wherein the audio output module is configured to output a sound when the external device is determined to be a sound playback device according to the divided piezoelectric position Source signal. The charging control system of claim 5, wherein the electronic device further comprises a path switching unit, wherein the path switching unit is configured to turn on or off an audio transmission path and a charging path, and the charging control system further includes a path switching control module, the path switching control module is configured to control the path switching unit to turn on or off the audio transmission path or the charging path. An electronic device for charging an external device, the external device comprising a connector, the electronic device comprising: an audio transmission hole for inserting the connector; and a signal generating switch electrically connected to the audio transmission hole When the connector is inserted into the audio transmission hole, an interrupt signal is generated; a voltage dividing circuit is electrically connected to the audio transmission hole, and when the connector is inserted into the audio transmission hole, the connector and the signal generating switch Parallel and connected in series with the voltage dividing circuit, so that the voltage dividing circuit generates a minute piezoelectric position according to an impedance value of the connector when the signal generating switch is not turned on; a power supply module is connected to the audio signal The transmission hole and the voltage dividing circuit are electrically connected to generate a power signal; and a control unit is electrically connected to the signal generating switch and the power supply module for controlling the signal generating switch, and The signal generating switch detects the divided voltage when the switch is not turned on, thereby determining whether to control the power supply module to output the power signal according to the divided piezoelectric position. The electronic device of claim 7, wherein the control unit determines whether to control according to the piezoelectric position The power supply module outputs the power signal or outputs an audio signal. The electronic device of claim 8, further comprising a path switching unit electrically connected to the audio transmission hole and the power supply module for turning on or off an audio transmission path and a a charging path; the control unit controls the path switching unit to turn on or off the audio transmission path or the charging path according to the voltage dividing bit.