CN105048018B - The charging method and device of a kind of terminal with data exchanging function - Google Patents

Abstract

The embodiment of the present invention discloses a charging method and device for a terminal with a data exchange function. The charging method includes: if the USB interface of the terminal is connected to the OTG transfer line for data exchange, detect the power supply of the USB interface of the terminal Whether the pin receives a voltage signal; if so, switch the terminal to the device charging access mode and control the charging of the terminal; if not, detect the voltage value of the identification pin of the USB interface of the terminal, and execute the corresponding control. The present invention detects whether the power supply pin of the USB interface of the terminal receives a voltage signal, thereby judging whether to switch the terminal to the execution device charging access mode, or to detect the voltage value of the identification pin of the USB interface of the terminal to perform corresponding control , which solves the problem in the prior art that the terminal cannot be charged through the OTG adapter cable.

Description

A charging method and device for a terminal with data exchange function

technical field

The invention relates to charging technology, in particular to a charging method and device for a terminal with data exchange function.

Background technique

With the diversification of peripheral equipment and the demand for high-speed transmission, the data exchange (On-The-Go, OTG) function is more and more widely used in electronic terminal equipment, and OTG will gradually become the basic configuration function of future electronic products.

Taking a mobile phone terminal as an example, as shown in Figure 1, it is a schematic diagram of a USB interface of a mobile phone provided by the prior art. The USB interface has a ground pin GND, an identification pin ID, a positive voltage data pin D+, and a negative voltage data pin D- and power supply pin VBUS. For mobile phones that support the OTG function, when the OTG adapter cable is connected to the USB interface of the mobile phone, the mobile phone executes the data exchange access mode. At this time, the VBUS pin of the USB interface of the mobile phone outputs 5V voltage, and the terminal detects the OTG device through the OTG adapter cable. identify. When the terminal detects that an OTG device is connected to the mobile phone through the OTG adapter cable, the mobile phone in the data exchange access mode recognizes the OTG device and performs data exchange communication with the OTG device.

It can be seen that the existing OTG adapter cable is only used as a data line for the terminal to access the external OTG device, and is used for connection and communication between the terminal and the OTG device, and has a defect of single function. When the OTG transfer cable connects the external power supply to the terminal, since the ID pin in the OTG transfer cable is connected to the GND pin, and the ID pin of the corresponding mobile phone is grounded, the terminal is in the data exchange access mode, and the terminal cannot pass the OTG transfer. Wired for charging, thus reducing the convenience of user experience.

Contents of the invention

The present invention provides a charging method and device for a terminal with a data exchange function to solve the problem in the prior art that the terminal cannot be charged through an OTG transfer line.

In a first aspect, an embodiment of the present invention provides a charging method for a terminal with a data exchange function, including:

If the USB interface of the terminal is connected to the data exchange OTG transfer line, detect whether the power supply pin of the USB interface of the terminal receives a voltage signal;

If so, switch the terminal to the device charging access mode and control the charging of the terminal;

If not, detect the voltage value of the identification pin of the USB interface of the terminal, and perform corresponding control.

In the second aspect, the embodiment of the present invention also provides a charging device for a terminal with a data exchange function, including:

The power pin detection module is used to detect whether the power pin of the USB interface of the terminal receives a voltage signal when the USB interface of the terminal is connected to the data exchange OTG transfer wire;

An access mode switching module, configured to switch the terminal to an access mode for performing device charging and control charging of the terminal when it is detected that the power pin of the USB interface of the terminal receives a voltage signal;

The identification pin detection module is used to detect the voltage value of the identification pin of the USB interface of the terminal when it is detected that the power supply pin of the USB interface of the terminal does not receive a voltage signal, and perform corresponding control.

A charging method and device for a terminal with a data exchange function provided by the present invention detects the power supply pin of the USB interface of the terminal when the USB interface of the terminal is connected to the OTG adapter cable for data exchange Whether a voltage signal is received; when a voltage signal is detected, switch the terminal to the device charging access mode and control terminal charging; if no voltage signal is received, detect the voltage value of the identification pin of the USB interface of the terminal, and implement corresponding controls. The present invention detects whether the power supply pin of the USB interface of the terminal receives a voltage signal, thereby judging whether to switch the terminal to the execution device charging access mode, or to detect the voltage value of the identification pin of the USB interface of the terminal to execute Control accordingly. The invention solves the problem in the prior art that the terminal cannot be charged through the OTG transfer line.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the schematic diagram of the USB interface of the mobile phone that prior art provides;

FIG. 2 is a flow chart of a charging method for a terminal with a data exchange function provided by Embodiment 1 of the present invention;

FIG. 3 is a flow chart of a charging method for a terminal with a data exchange function provided by Embodiment 2 of the present invention;

FIG. 4 is a schematic diagram of a charging device for a terminal with a data exchange function provided by Embodiment 3 of the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described through implementation with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the embodiment of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

It can be seen from the prior art that when the OTG adapter cable is inserted into the USB interface of the terminal, the terminal is in the data exchange access mode. At this time, the power pin of the USB interface of the terminal will output a voltage of 5V, resulting in that the terminal cannot be charged.

Embodiment one

Fig. 2 is a flow chart of a charging method for a terminal with a data exchange function provided by Embodiment 1 of the present invention. The technical solution of this embodiment is applicable to a terminal with an OTG function connected to an external power supply through an OTG transfer cable for charging. Condition. The terminal can be any electronic device with an OTG function, such as a mobile phone, a tablet computer, and the like. The method can be executed by a charging device of a terminal having an OTG function, and the device can be implemented in software and/or hardware, and configured to be executed in the terminal. As shown in Figure 2, the charging method of the terminal with data exchange function includes the following operations:

S110. If the USB interface of the terminal is connected to the data exchange OTG transfer cable, detect whether the power pin of the USB interface of the terminal receives a voltage signal.

The USB interface of the known terminal has a ground pin GND, an identification pin ID, a positive voltage data pin D+, a negative voltage data pin D-, and a power pin VBUS. When an OTG adapter cable is inserted into the USB interface of the terminal, it is first mandatory to detect whether the power pin VBUS of the USB interface of the terminal receives a voltage signal as a basis for switching the terminal access mode.

In this step, whether the power pin of the USB interface of the terminal receives a voltage signal is used as the judgment basis for forcing the terminal to enter the charging state, so that when the power pin of the USB interface of the terminal receives a voltage signal, the terminal is forced to switch to perform device charging access model.

S120. If a voltage signal is received, switch the terminal to an access mode for performing device charging and control charging of the terminal.

When it is detected that the power supply pin of the USB interface of the terminal receives a voltage signal, the terminal is switched to the device charging access mode at this time, so as to realize terminal charging. When the OTG adapter cable connects the external power supply to the terminal, the terminal in the device charging access mode can be charged through the OTG adapter cable. This avoids the situation that the terminal is always in the data exchange access mode after the OTG adapter cable is inserted, causing the terminal to fail to charge.

In this step, as long as it is detected that the power pin of the USB interface of the terminal receives a voltage signal, the terminal is forced to switch to the device charging access mode, so that the OTG adapter cable can be used as a connection line for the power supply device to charge the terminal. The device can be charged when it is connected to the terminal through an OTG adapter cable.

S130. If no voltage signal is received, detect the voltage value of the identification pin of the USB interface of the terminal, and perform corresponding control.

When it is detected that the power supply pin of the USB interface of the terminal does not receive a voltage signal, the voltage value of the identification pin of the USB interface of the terminal is detected to judge whether to switch the terminal to the data exchange access mode according to the detection result.

A charging method for a terminal with a data exchange function provided by an embodiment of the present invention is to detect whether the power pin of the USB interface of the terminal receives a voltage signal when the USB interface of the terminal is connected to an OTG transfer cable, and then When the voltage signal is received, it is determined to switch the terminal to the device charging access mode; or when the power signal is not received, the voltage value of the identification pin of the USB interface of the terminal is detected to further determine whether to execute the data exchange access mode. The invention solves the problem that the terminal cannot be charged through the OTG transfer line in the prior art, realizes the switching of the terminal between the device charging access mode and the data exchange access mode, and expands the function of the OTG transfer line.

Embodiment two

FIG. 3 is a flow chart of a terminal charging method with a data exchange function provided by Embodiment 2 of the present invention. The method can be executed by a charging device of a terminal having an OTG function, and the device can be implemented in software and/or hardware, and configured to be executed in the terminal. As shown in Figure 3, the charging method of the terminal with data exchange function includes the following operations:

S201. Detect whether the voltage value at the power pin of the USB interface of the terminal is greater than or equal to a set threshold value. If yes, execute S202; if not, execute S203.

Exemplarily, when an OTG adapter cable is connected to the USB interface of the terminal, the voltage value at the power pin of the USB interface of the terminal is detected, and the voltage value is compared with the set threshold value comparing and judging whether the voltage value at the power supply pin is greater than or equal to the set threshold value. For example, the set threshold value may be set to 5V, and the set threshold value is not specifically limited here.

In this step, by detecting whether the voltage value at the power supply pin of the USB interface of the terminal is greater than or equal to the set threshold value, it is used to determine whether the USB interface of the terminal has a power supply device connected, that is, whether the voltage is received Signal. This step can enable the terminal to detect the access of the power supply equipment when the terminal is connected to the OTG adapter cable, which solves the problem that the existing OTG adapter cable cannot be used to connect the terminal and the power supply equipment and charge the terminal .

S202. If the voltage value at the power supply pin of the USB interface of the terminal is greater than or equal to the set threshold value, then determine that a voltage signal is received, switch the terminal to the access mode for performing device charging, and control the charging of the terminal .

The above steps may specifically be that, when the voltage value at the power supply pin of the USB interface of the terminal is compared with the set threshold value, it can be determined that the voltage signal is received, that is, when the terminal is connected to the power supply device through the OTG adapter cable, the The terminal is switched to the access mode of executing device charging, and the terminal is charged by using the connected power supply device.

S203. If the voltage value at the power supply pin of the USB interface of the terminal is less than a set threshold value, detect whether the voltage value of the identification pin of the USB interface of the terminal is a set low level. If yes, execute S204; if not, continue to execute S201, that is, continue to detect whether the voltage value at the power pin of the USB interface of the terminal is greater than or equal to the set threshold value.

Specifically, when it is determined that the device connected to the USB interface of the terminal through the OTG adapter cable is not a power supply device, the terminal switches to the data exchange access mode, and the voltage value of the identification pin of the USB interface of the terminal Whether to detect the set low level.

S204. If the voltage value of the identification pin of the USB interface of the terminal is set to a low level, switch the terminal to a data exchange access mode.

When the identification pin of the USB interface of the terminal is set to a low level, it means that an OTG device is detected at the USB interface of the terminal. At this time, the terminal can perform OTG detection, identification and access to the connected OTG device, and then communicate with the OTG device. OTG equipment for data exchange.

S205. After switching the terminal to the data exchange access mode, control the output voltage of the power supply pin of the USB interface of the terminal.

In the data exchange access mode, when an OTG device is connected to the USB interface of the terminal, the power supply pin of the USB interface of the terminal is controlled to output a preset voltage value, which is supplied to the external OTG device to realize the data exchange between the terminal and the OTG device. communication. Exemplarily, the preset voltage value may be 5V, which is just an example of the preset voltage value and not specifically limited.

It should be noted that when the device connected to the terminal through the OTG adapter cable is a storage device, the VBUS pin of the terminal will be in a high-impedance state. At this time, the terminal cannot switch to the charging access mode, and the storage device can be used as an OTG The device performs processing, that is, judges whether the voltage value of the identification pin ID of the terminal is a set low level, and if so, the VBUS pin of the terminal USB interface outputs a 5V power supply, and completes the data exchange communication with the external storage device.

Embodiment 2 of the present invention provides a charging method for a terminal with a data exchange function, by detecting whether the voltage value at the power pin of the USB interface of the terminal is greater than or equal to the set threshold value, and judging accordingly The terminal is switched to the charging access mode of the execution device, and whether the voltage value of the identification pin of the USB interface of the terminal is a set low level is detected and judged, so as to provide a basis for data exchange or not, and solve the problem There is a problem that the terminal cannot be charged through the OTG adapter cable in the technology, and the switch between the device charging access mode and the data exchange access mode is realized, and the function of the OTG adapter cable is expanded.

Embodiment three

FIG. 4 is a schematic diagram of a charging device for a terminal with a data exchange function provided by Embodiment 3 of the present invention. The device can implement the method for charging a terminal with an OTG function described in the above-mentioned embodiments in the form of software and/or hardware, and the device is configured to be executed in the terminal.

The charging device for a terminal with a data exchange function provided in this embodiment includes: a power pin detection module 310 , an access mode switching module 320 and an identification pin detection module 330 .

Wherein, the power pin detection module 310 is used to detect whether the power pin of the USB interface of the terminal receives a voltage signal when the USB interface of the terminal is connected to the data exchange OTG transfer line; the access mode is switched The module 320 is used to switch the terminal to execute device charging access mode and control the charging of the terminal when it detects that the power supply pin of the USB interface of the terminal receives a voltage signal; the identification pin detection module 330 is used when When it is detected that the power supply pin of the USB interface of the terminal does not receive a voltage signal, the voltage value of the identification pin of the USB interface of the terminal is detected, and corresponding control is performed.

Optionally, the power pin detection module 310 is specifically configured to: detect whether the voltage value at the power pin of the USB interface of the terminal is greater than or equal to a set threshold value, and if so, determine that a voltage signal is received.

Optionally, the set threshold value is 5V.

Optionally, the identification pin detection module 330 includes: a pin level detection unit 331 and a data access switching unit 332 .

Wherein, the pin level detection unit 331 is used to detect whether the voltage value of the identification pin of the USB interface of the terminal is a set low level; the data access switching unit 332 is used to When the voltage value of the identification pin is set to a low level, the terminal is switched to a data exchange access mode.

Optionally, the charging device further includes: a pin voltage output unit 333 .

Wherein, the pin voltage output unit 333 is configured to control the output voltage of the power pin of the USB interface of the terminal after the data access switching unit 332 switches the terminal to the data exchange access mode.

A terminal device with a data exchange function provided by the present invention detects the power supply of the USB interface of the terminal when the Universal Serial Bus USB interface of the terminal is connected to the data exchange OTG transfer line through the power pin detection module Whether the pin receives a voltage signal. When the access mode switching module receives the voltage signal, it switches the terminal to the device charging access mode and controls the charging of the terminal; when the identification pin detection module does not receive the voltage signal, it detects the USB port of the terminal. The voltage value of the identification pin of the interface, and perform corresponding control. This embodiment solves the problem that the terminal cannot be charged through the OTG adapter cable in the prior art, and realizes the switching of the terminal between the device charging access mode and the data exchange access mode, expands the function of the OTG adapter cable, and provides users with A more convenient service experience.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention, and the present invention The scope is determined by the scope of the appended claims.

Claims (6)

1. a kind of charging method of the terminal with data exchanging function, it is characterised in that including：

If the general-purpose serial bus USB interface of the terminal is connected with data exchange OTG patchcords, the terminal is detected Whether the power pins of USB interface receive voltage signal；

If so, the terminal is switched into execution equipment charge access module and the terminal charge is controlled；

If it is not, then detecting the magnitude of voltage of the identified pins of the USB interface of the terminal, and perform corresponding control；

Wherein, detecting the magnitude of voltage of the identified pins of the USB interface of the terminal, and perform corresponding control includes：

Whether the magnitude of voltage for detecting the identified pins of the USB interface of the terminal is setting low level；

If so, the terminal then is switched into execution data exchange access module；

After the terminal to be switched to execution data exchange access module, in addition to：Control the USB interface of the terminal Power pins output voltage.

2. charging method according to claim 1, it is characterised in that the power pins of the USB interface of the detection terminal Whether receiving voltage signal includes：

Detect the terminal USB interface power pins at magnitude of voltage whether be more than or equal to setting threshold value, if so, then It is determined that receiving voltage signal.

3. charging method according to claim 2, it is characterised in that the threshold value that sets is 5V.

4. a kind of charging device of the terminal with data exchanging function, it is characterised in that including：

Power pins detection module, for the general-purpose serial bus USB interface when the terminal and data exchange OTG patchcord phases Lian Shi, detects whether the power pins of the USB interface of the terminal receive voltage signal；

Access module handover module, for when detecting the power pins of USB interface of the terminal and receiving voltage signal, The terminal is switched into execution equipment charge access module and the terminal charge is controlled；

Identified pins detection module, for not receiving voltage signal when the power pins for the USB interface for detecting the terminal When, the magnitude of voltage of the identified pins of the USB interface of the terminal is detected, and perform corresponding control；

The identified pins detection module includes：

Pin level detection unit, whether the magnitude of voltage of the identified pins of the USB interface for detecting the terminal is that setting is low Level；

Data access switch unit, the magnitude of voltage for the identified pins when the USB interface for detecting the terminal is low to set During level, then the terminal is switched into execution data exchange access module；

The charging device also includes：Pin voltage output unit, in the data access switch unit by the terminal Switch to after execution data exchange access module, control the power pins output voltage of the USB interface of the terminal.

5. charging device according to claim 4, it is characterised in that the power pins detection module specifically for：

Detect the terminal USB interface power pins at magnitude of voltage whether be more than or equal to setting threshold value, if so, then It is determined that receiving voltage signal.

6. charging device according to claim 5, it is characterised in that the threshold value that sets is 5V.