CN210573760U - Android activator - Google Patents

Abstract

The utility model discloses a tall and erect activator of ann, tall and erect activator of ann includes: the system comprises a communication interface supporting a PD protocol, a USB HOST unit, an MCU, a PD protocol processing unit and a selector switch unit; the MCU is respectively and electrically connected with the USB HOST unit, the PD protocol processing unit and the change-over switch unit; the PD protocol processing unit is electrically connected with the communication interface through the change-over switch unit; and the USB HOST unit is electrically connected with the communication interface. The android activator configures a terminal into DFP equipment through PD protocol characteristics, and configures the terminal into USB HOST equipment serving as an SINK end, so that AOA data communication can be realized by supplying power to the terminal under the condition of no external power supply or built-in battery power supply.

Description

Android activator

Technical Field

The utility model relates to a data connection equipment field especially relates to an android activator.

Background

At present, android activators (used for executing an ADB command through an android USB AOA protocol to obtain an ADBSHELL permission, which is equivalent to a case that a computer data line is connected with an android phone to execute an ADB command) on the market generally require an internal battery or an external power supply to configure the activator device into a USB HOST device (serving as a power supply terminal), so that AOA data communication is realized, and a related processing permission, such as an ADB instruction, is obtained. If the power is supplied by the built-in battery, the battery needs to be charged or replaced when the electric quantity is exhausted; and external power supply needs to be connected with an external power supply, so that the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, one of the objects of the present invention is to provide an android activator, which configures a terminal into a DFP device through PD protocol characteristics, configures itself into a USB HOST device as a SINK terminal, so that power can be supplied by the terminal under the condition of no external power supply or built-in battery power supply, thereby realizing AOA data communication.

The utility model discloses an one of the purpose adopts following technical scheme to realize:

an android activator, comprising: the system comprises a communication interface supporting a PD protocol, a USB HOST unit, an MCU, a PD protocol processing unit and a selector switch unit; the MCU is respectively and electrically connected with the USB HOST unit, the PD protocol processing unit and the change-over switch unit; the PD protocol processing unit is electrically connected with the communication interface through the change-over switch unit; and the USB HOST unit is electrically connected with the communication interface.

Further, the communication interface is a Type-C interface.

Further, the change-over switch unit may adopt a relay, a delay switch, a triode or an MOS transistor.

Furthermore, the device also comprises a voltage stabilizing unit which is respectively electrically connected with the MCU and the communication interface.

Further, the storage device also comprises a storage unit, and the storage unit is electrically connected with the MCU.

Further, the display unit is used for displaying the power supply state and/or the operation state.

Further, the display unit adopts a light emitting diode or a display screen.

Further, the device also comprises an external power supply unit, wherein the external power supply unit is respectively and electrically connected with the MCU and the PD protocol processing unit.

Further, the USB HOST unit, the MCU, and the PD protocol processing unit are integrated on one or more SOC chips.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the android activator configures the terminal into DFP equipment through PD protocol characteristics and configures the terminal into USBHOST, so that the terminal can supply power under the condition of no external power supply or built-in battery power supply, AOA data communication is realized, and the defects of external power supply and built-in battery are overcome.

Drawings

Fig. 1 is a block diagram of an android activator provided in the present invention;

FIG. 2 is a circuit diagram of the Type-C interface of FIG. 1;

fig. 3 is a circuit structure diagram of the SOC chip integrated with the USB HOST unit, the MCU, the PD protocol processing unit, and the FLASH unit in fig. 1 according to the present invention;

fig. 4 is a circuit configuration diagram of the change-over switch unit of fig. 1;

FIG. 5 is a circuit configuration diagram of the voltage stabilization unit of FIG. 1;

FIG. 6 is a circuit configuration diagram of the display unit of FIG. 1;

fig. 7 is a circuit configuration diagram of the external power supply unit in fig. 1.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

Referring to fig. 1 to 7, an android activator includes: the system comprises a communication interface supporting a PD protocol, a USB HOST unit, an MCU, a PD protocol processing unit and a selector switch unit; the MCU is respectively and electrically connected with the USB HOST unit, the PD protocol processing unit and the change-over switch unit; the PD protocol processing unit is electrically connected with the communication interface through the change-over switch unit; and the USB HOST unit is electrically connected with the communication interface. Specifically, the communication interface is a Type-C interface.

The workflow of the android activator is as follows:

the android activator is connected with a mobile phone through a communication interface, and after the mobile phone detects that a USB device is inserted, the mobile phone configures the android activator into a Source role (DFP device, DFP: Downstream Facing Port) by default and supplies 5V output voltage to the inserted device (the android activator). The android activator firstly enters a voltage stabilizing unit through a 5V voltage input by a communication interface to perform voltage stabilizing treatment, then supplies a voltage stabilizing power supply to the MCU to electrify the MCU, and sends an enabling signal to a changeover switch unit after the MCU is electrified to perform switch switching operation so as to completely switch on a CC bus for PD protocol transmission; after the CC bus is connected, SOP communication of a PD protocol starts to be established on the CC bus, an SINK (the android activator) end initiates an SOP communication request (specifically, an MCU initiates the SOP communication request), a required voltage and current specification is requested from a SOURCE (mobile phone) end, and the SOURCE (mobile phone) end replies and provides corresponding power output after receiving the request; after the communication between the SINK (android activator) end and the PD protocol of the SOURCE (mobile phone) end is finished, the MCU starts to enter a USB communication stage; the MCU configures the android activator into a USB HOST device, and then starts AOA communication after detecting that the mobile phone end is used as a USB device for access.

The android activator configures the terminal into DFP equipment through PD protocol characteristics and configures the terminal into USBHOST, so that the terminal can supply power under the condition of no external power supply or built-in battery power supply, AOA data communication is realized, and the defects of external power supply and built-in battery are overcome. The Android Open Accessory (AOA) support function enables external USB hardware (Android USB accessories) to interact with Android devices in accessory mode. When an Android device is in the accessory mode, the connected accessory can serve as a USB host (supplying power to the bus and enumerating the device), and the Android device serves as a USB accessory.

Specifically, the workflow of the android activator is described in detail with reference to fig. 2 to 7 (the USB HOST unit, the MCU, the PD protocol processing unit, and the FLASH unit are all integrated in the SOC chip U2):

and connecting the android activator with the mobile phone, wherein the android activator and the mobile phone are connected through a Type-C interface of the android activator. When the Type-C interface is inserted into the mobile phone, the mobile phone can recognize whether the Type-C interface is inserted in a forward direction or a reverse direction through the VCONN pin of the USB Type-C PLUG (fig. 2) and the pull-down resistor of the CC1 pin, and because the resistor is arranged, the pin level is pulled down when the Type-C interface is inserted, so that the insertion of which surface can be known. After detecting a positive or negative insertion, that is, detecting that a USB device is inserted, the handset will default to configure itself in Source role (DFP device) due to the function of the pull-down resistor, and supply an output voltage of 5V to the inserted device (the android activator). After the android activator obtains 5V voltage (5V voltage is obtained through a UBUS terminal in fig. 2), the voltage is stabilized through a voltage stabilizing unit, then 3.3V voltage is output to power the SOC chip U2, after the SOC chip U2 is powered on, a change-over switch unit (a U3 single-pole double-throw analog switch in fig. 4 is a delay switch) is set to 0 after a period of time delay (which can be set to 0.5-1s, etc.), a UFP _ CC and UFP _ CC1 network is switched on, and at this time, a CC bus transmitted by a PD protocol is completely switched on; after the CC bus is connected, SOP communication of a PD protocol starts to be established on the CC bus, an SINK (android activator) end initiates an SOP communication request, a required voltage and current specification is requested from a SOURCE (mobile phone) end, and the SOURCE (mobile phone) end replies and provides corresponding power output after receiving the request; after the communication between the SINK (android activator) end and the SOURCE (mobile phone) end PD protocol is completed, the SOC chip U2 starts to enter the USB communication stage; the SOC chip U2 configures the android activator into a USB HOST device, and then starts AOA communication after detecting that the mobile phone end is accessed as a USB device.

It should be noted that the PD protocol (USB Power Delivery) is a fast charging standard, and the algorithm control involved in the PD protocol process belongs to the prior art, and does not belong to the protection scope of the present invention.

In a preferred embodiment, the switch unit may employ a relay, a time delay switch, a triode, or a MOS transistor.

As a preferred embodiment, the communication device further comprises a voltage stabilizing unit, and the voltage stabilizing unit is electrically connected with the MCU and the communication interface, respectively. The voltage stabilizing unit adopts a linear low-dropout regulator.

As a preferred implementation manner, the device further comprises a storage unit, and the storage unit is electrically connected with the MCU. The storage unit is a FLASH unit used for storing software or logic information, and the FLASH unit is integrated in the SOC chip. Of course, the memory unit may also include other types of memory.

As a preferred embodiment, the system further comprises a display unit for displaying the power supply state and/or the operation state. The display unit adopts a light emitting diode or a display screen. In the present embodiment, two kinds of LED lamps, red and green, are used to display the power supply status.

As a preferred embodiment, the android activator may further include an external power supply circuit, and when the android activator has an external power supply, the android activator may be powered by the external power supply circuit, so as to reduce the use of the electric quantity of the mobile phone.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims (9)

1. An android activator, comprising: the system comprises a communication interface supporting a PD protocol, a USB HOST unit, an MCU, a PD protocol processing unit and a selector switch unit; the MCU is respectively and electrically connected with the USB HOST unit, the PD protocol processing unit and the change-over switch unit; the PD protocol processing unit is electrically connected with the communication interface through the change-over switch unit; and the USB HOST unit is electrically connected with the communication interface.

2. The android activator of claim 1, in which the communication interface is a Type-C interface.

3. The android activator of claim 1, wherein the switch unit can be a relay, a time delay switch, a triode, or a MOS (metal oxide semiconductor) transistor.

4. The android activator of claim 1, further comprising a voltage stabilization unit, the voltage stabilization unit being electrically connected to the MCU and the communication interface, respectively.

5. The android activator of claim 1, further comprising a storage unit, the storage unit electrically connected with the MCU.

6. The android activator of claim 1, further comprising a display unit to display a power supply status and/or an operational status.

7. The android activator of claim 6, wherein the display unit employs a light emitting diode or a display screen.

8. The android activator of any one of claims 1 to 7, further comprising an external power supply unit, wherein the external power supply unit is electrically connected to the MCU and the PD protocol processing unit, respectively.

9. The android activator of claim 8, wherein the USB HOST unit, the MCU, and the PD protocol processing unit are integrated on one or more SOC chips.

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