Equipment switching device

Abstract

The utility model discloses an equipment switching device which comprises the components of a first Type-C interface which is suitable for being connected with equipment to be tested; expansion equipment and a plurality of equipment interfaces, the expansion equipment is connected with each equipment interface, and each equipment interface is suitable for being connected with external equipment; the switching unit is connected with the cc pin of the first Type-C interface and the ground pin of the first Type-C interface, and the switching unit is configured to switch the connection mode between the cc pin of the first Type-C interface and the ground pin of the first Type-C interface so as to switch different external devices to be communicated with the to-be-tested device. According to the device, the connection state of the cc pin of the first Type-C interface is switched through the switching unit, so that the to-be-tested device is connected with different external devices, switching of various external devices is achieved, and the testing efficiency of the device is improved.

Description

Technical Field

[0001] This application relates to the field of automated testing technology, and in particular to a device switching apparatus. Background Technology

[0002] In related technologies, the USB (Universal Serial Bus) interface of electronic devices, such as the Type-C interface (a USB interface standard), typically supports the connection of multiple devices, such as digital headsets, analog headsets, screen projectors, adapters, and OTG (On-The-Go, a USB transmission technology) devices. When the Type-C interface recognizes different devices and matches the corresponding protocol, communication with that device can be completed. However, because it supports a wide variety of devices but only allows one type of device to be connected at a time, once the Type-C interface on the device is occupied by one device, other external devices cannot be tested. Therefore, electronic devices can only test one type of external device, resulting in low testing efficiency. Utility Model Content

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this invention is to provide a device switching device that switches the connection state of the cc pin of a first Type-C interface through a switching unit, enabling the device under test to connect to different external devices, thus achieving switching between multiple external devices and improving the testing efficiency of the device.

[0004] To achieve the above objectives, a device switching device is proposed according to an embodiment of the present invention, comprising: a first Type-C interface adapted to connect a device under test; an expansion device and multiple device interfaces, wherein the expansion device is connected to each device interface, and each device interface is adapted to connect an external device; and a switching unit, wherein the switching unit is connected to the cc pin of the first Type-C interface and the ground pin of the first Type-C interface respectively, and the switching unit is configured to switch the connection mode between the cc pin of the first Type-C interface and the ground pin of the first Type-C interface, so as to switch different external devices to connect to the device under test.

[0005] The device switching apparatus according to an embodiment of the present invention includes a first Type-C interface, an expansion device, multiple device interfaces, and a switching unit. The first Type-C interface is adapted to connect to the device under test. The expansion device is connected to each device interface, and each device interface is adapted to connect to an external device. The switching unit is connected to the cc pin and the ground pin of the first Type-C interface, respectively. The switching unit is configured to switch the connection mode between the cc pin and the ground pin of the first Type-C interface to switch between different external devices connected to the device under test. Thus, by switching the connection state of the cc pin of the first Type-C interface through the switching unit, the device under test can be connected to different external devices, realizing the switching of multiple external devices and improving the testing efficiency of the device.

[0006] According to one embodiment of the present invention, the multiple device interfaces include: a USB interface, suitable for connecting an OTG device; and a second Type-C interface, suitable for connecting an OTG device or a charging device.

[0007] According to one embodiment of the present invention, the switching unit includes: a first controllable switch, one end of which is connected to the ground pin of a first Type-C interface; and a resistor, one end of which is connected to the cc pin of the first Type-C interface, and the other end of which is connected to the other end of the first controllable switch.

[0008] According to one embodiment of the present invention, when the first controllable switch is turned on and the USB interface or the second Type-C interface is suitable for connecting to the OTG device, the device under test is connected to the OTG device; when the first controllable switch is turned off and the second Type-C interface is suitable for connecting to the charging device, the device under test is connected to the charging device.

[0009] According to one embodiment of the present invention, the switching unit further includes: a second controllable switch, one end of the second controllable switch being connected to the other end of the resistor, the other end of the second controllable switch being connected to the other end of the first controllable switch, and the control terminal of the second controllable switch being adapted to be connected to a host computer so as to switch the connection mode of the cc pin of the first Type-C interface according to the control command sent by the host computer when the first controllable switch is turned on.

[0010] According to one embodiment of the present invention, the second controllable switch is a relay, the normally open terminal of the relay is connected to the other end of the resistor, the common terminal of the relay is connected to the other end of the first controllable switch, and the control terminal of the relay is suitable for connecting to a host computer.

[0011] According to one embodiment of the present invention, when the control command is a power-on command, the device under test is connected to the OTG device; when the control command is a power-off command, the device under test is connected to the charging device.

[0012] According to one embodiment of the present invention, the device under test is also adapted to communicate with a host computer. The device under test is configured to identify the type of the connected external device to obtain the identification result and send the identification result to the host computer so that the host computer can determine whether the device under test has completed the device switching based on the identification result.

[0013] According to one embodiment of the present invention, the USB interface and the second Type-C interface are also adapted to connect a slave device. The switching unit further includes a third controllable switch, which is disposed between the first Type-C interface and the expansion device. The third controllable switch is also configured to switch the slave device to be connected to the first Type-C interface when the first controllable switch is turned off, so that the device under test can determine the type of the slave device based on the resistance value of the cc pin of the first Type-C interface.

[0014] According to one embodiment of the present invention, the device includes at least one of an audio device and a display device.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a device switching device according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the device interface according to an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of a switching unit according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the switching unit according to another embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the switching unit according to another embodiment of the present invention. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0022] The device switching apparatus of this utility model according to an embodiment is described below with reference to the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the structure of a device switching device according to an embodiment of the present invention. Figure 1 As shown, the device switching device 100 includes: a first Type-C interface 10, an expansion device 20, multiple device interfaces 30, and a switching unit 40.

[0024] The first Type-C interface 10 is adapted to connect to the device under test 200; the expansion device 20 is connected to each device interface 30, and each device interface 30 is adapted to connect to an external device; the switching unit 40 is connected to the cc pin cc of the first Type-C interface 10 and the ground pin GND of the first Type-C interface 10 respectively, and the switching unit 40 is configured to switch the connection mode between the cc pin cc of the first Type-C interface 10 and the ground pin GND of the first Type-C interface 10, so as to switch different external devices to connect to the device under test 200.

[0025] Specifically, the first Type-C interface 10 is a male connector, suitable for insertion into the Type-C interface of the device under test 200. The device interface 30 is a female connector, suitable for connecting one external device. Since there are multiple device interfaces 30, multiple types of external devices can be connected simultaneously. The connection state of the cc pin of the first Type-C interface 10 is different when connecting different types of external devices. Therefore, the switching unit 40 switches the connection mode of the cc pin of the first Type-C interface 10 to switch different external devices connected to the device under test 200. The device under test 200 identifies different types of external devices and performs corresponding functional tests.

[0026] In one alternative implementation, such as Figure 2 As shown, the expansion device 20 is also equipped with a third Type-C interface 21, which can also be used to connect an external device.

[0027] In the above embodiments, there is no need to repeatedly plug and unplug the first Type-C interface connected to the device under test. Simply insert the external device into the device interface and switch the connection mode between the cc pin and the ground pin of the first Type-C interface through the switching unit. This allows for switching between different types of external devices and the device under test, thereby improving the testing efficiency of the device.

[0028] In some embodiments, such as Figure 2 As shown, the multiple device interfaces 30 include: a USB interface 31 and a second Type-C interface 32, wherein the USB interface 31 is adapted to connect an OTG device; and the second Type-C interface 32 is adapted to connect an OTG device or a charging device.

[0029] Specifically, the USB interface 31 can be a USB 3.0 interface, and OTG devices, including mobile phones, keyboards, mice, etc., can be plugged into the USB interface 31. The second Type-C interface 32 can be plugged into an OTG device or a charging device, wherein the charging device can be an adapter. When an OTG device is connected to the USB interface 31 and a charging device is connected to the second Type-C interface 32, the switching unit 40 can switch the device under test 200 to be connected to the OTG device or the charging device to test the identification function, OTG function, and charging function of the device under test 200.

[0030] In one alternative implementation, such as Figure 2 As shown, the multiple device interfaces 30 also include a memory card interface 33, which is suitable for inserting a memory card. The memory card can be an SD (Secure Digital) card or a TF (Trans-flash) card. Therefore, the memory card interface 33 includes an SD port and a TF port.

[0031] In some embodiments, such as Figure 3 As shown, the switching unit 40 includes a first controllable switch S1 and a resistor R, wherein one end of the first controllable switch S1 is connected to the ground pin GND of the first Type-C interface 10; one end of the resistor R is connected to the cc pin cc of the first Type-C interface 10, and the other end of the resistor R is connected to the other end of the first controllable switch S1.

[0032] Specifically, the first controllable switch S1 controls the state of the cc pin (cc) of the first Type-C interface 10 by controlling the state of the other end of the resistor R. When the first controllable switch S1 is on, the other end of the resistor R is connected to the ground pin (GND) of the first Type-C interface 10 through the first controllable switch S1. At this time, the resistor R acts as a pull-down resistor, pulling the cc pin (cc) of the first Type-C interface 10 down to a low level. When the first controllable switch S1 is off, the other end of the resistor R is floating, and the cc pin (cc) of the first Type-C interface 10 is not connected to the resistor R. The device under test 200 can identify the type of external device based on the state of the cc pin (cc) of the first Type-C interface 10.

[0033] In some embodiments, when the first controllable switch S1 is turned on and the USB interface 31 or the second Type-C interface 32 is adapted to connect to an OTG device, the device under test 200 is connected to the OTG device; when the first controllable switch S1 is turned off and the second Type-C interface 32 is adapted to connect to a charging device, the device under test 200 is connected to the charging device.

[0034] Specifically, the difference between an OTG cable and a charging cable is that the cc pin of the Type-C interface of an OTG cable is connected to ground through a resistor R, while the cc pin of the Type-C interface of a charging cable is not connected in series with any resistor R. Therefore, when the first controllable switch S1 is turned on, if an OTG device is connected to the device interface 30, the device switching device 100 in this embodiment is an OTG cable. After the device under test 200 detects the resistor R, it will switch to host mode, turn on the power switch, and output power to the external device, realizing the end-to-end identification and data transmission functions. When the first controllable switch S1 is turned off, if a charging device is connected to the second Type-C interface 32, the device switching device 100 in this embodiment is a charging cable. The charging device can supply power to the device under test 200, realizing the charging effect.

[0035] In one optional implementation, the first controllable switch S1 can be a manual switch, such as a push-button switch. When the user needs to test the OTG function of the device under test 200, the user operates the push-button switch to turn on the first controllable switch S1. After the device under test 200 detects the resistance R, it enters the OTG function. When the user needs to test the charging function, the user operates the push-button switch to turn off the first controllable switch S1. After the device under test 200 can no longer detect the resistance R, the charging device can supply power to the device under test 200.

[0036] In the above embodiments, by controlling the first controllable switch, the OTG device and the charging device are connected to the device under test, thereby testing whether the device under test can recognize the OTG device or the charging device.

[0037] In some embodiments, such as Figure 4 As shown, the switching unit 40 further includes a second controllable switch 41, one end of which is connected to the other end of the resistor R, and the other end of which is connected to the other end of the first controllable switch S1. The control terminal of the second controllable switch 41 is adapted to be connected to the host computer 300 so that, when the first controllable switch S1 is turned on, the connection mode of the cc pin of the first Type-C interface 10 can be switched according to the control command sent by the host computer 300.

[0038] Specifically, since the first controllable switch S1 can be a manual switch, the second controllable switch 41 can be controlled by the host computer 300 to achieve automatic switching between OTG devices and charging devices. With the first controllable switch S1 in the open state, the second controllable switch 41 can control the connection state of the other end of the resistor R. When the second controllable switch 41 is open, the other end of the resistor R is grounded; when the second controllable switch 41 is closed, the other end of the resistor R is floating. The host computer 300 sends control commands to the second controllable switch 41, and the second controllable switch 41 opens or closes according to the control commands to achieve switching between external devices.

[0039] In some embodiments, such as Figure 4 As shown, the second controllable switch 41 is a relay. The normally open terminal NO of the relay is connected to the other end of the resistor R, the common terminal COM of the relay is connected to the other end of the first controllable switch S1, and the control terminal IN of the relay is suitable for connecting to the host computer 300.

[0040] Specifically, the relay can be connected to the host computer 300 via a serial port. The host computer 300 outputs control commands to the relay's control terminal IN, which can control whether the normally open terminal NO and the common terminal COM of the relay are engaged, thereby realizing automated switching of external devices. When the normally open terminal NO of the relay is engaged with the common terminal COM, the second controllable switch 41 is turned on; when the normally open terminal NO of the relay is disengaged from the common terminal COM, the second controllable switch 41 is turned off.

[0041] Furthermore, such as Figure 4 As shown, the relay's ground pin GND and power supply pin VCC are also connected to the host computer 300 via a serial port.

[0042] In some embodiments, when the control command is a power-on command, the device under test 200 is connected to the OTG device; when the control command is a power-off command, the device under test 200 is connected to the charging device.

[0043] In other words, the host computer 300 sends a power-on command [0xA0, 0x01, 0x00, 0xA1] to the control terminal IN of the relay via the serial port, so that the cc pin of the first Type-C interface 10 is connected to the ground pin GND through the resistor R. In this embodiment, the device switching device 100 is an OTG connection line. The host computer 300 sends a power-off command [0xA0, 0x01, 0x00, 0xA2] to the control terminal IN of the relay, so that the cc pin of the first Type-C interface 10 is not connected in series with the resistor R. In this embodiment, the device switching device 100 is a charging cable.

[0044] In some embodiments, such as Figure 4 As shown, the device under test 200 is also adapted to communicate with the host computer 300. The device under test 200 is configured to identify the type of the connected external device, obtain the identification result, and send the identification result to the host computer 300 so that the host computer 300 can determine whether the device under test 200 has completed the device switching based on the identification result.

[0045] Specifically, the host computer 300 can communicate with the device under test 200 via wireless ADB (Android Debug Bridge) to obtain the identification results of the device under test 200, including OTG device nodes and charging nodes. If the device under test 200 is connected to an OTG device, it should report the OTG device node; if it is connected to a charging device, it should report the charging node. Therefore, based on the nodes reported by the device under test 200, the host computer 300 can determine whether the device under test 200 can stably switch between OTG devices and charging devices.

[0046] In the above embodiments, the host computer can control the second controllable switch to realize the automatic switching of external devices, thereby further improving the testing efficiency; in addition, the device under test is also connected to the host computer for communication, and the host computer can also determine whether the device under test has completed the switching based on the identification results reported by the device under test.

[0047] In some embodiments, the USB interface 31 and the second Type-C interface 32 are also adapted to connect a slave device, such as... Figure 5As shown, the switching unit 40 further includes a third controllable switch S2, which is disposed between the first Type-C interface 10 and the expansion device 20. The third controllable switch S2 is also configured to switch the slave device to be connected to the first Type-C interface 10 when the first controllable switch S1 is turned off, so that the device under test 200 can determine the type of the slave device based on the resistance R value of the cc pin of the first Type-C interface 10.

[0048] Specifically, device interface 30 can be used not only to connect OTG devices and charging devices, but also to connect slave devices. OTG devices have both master and slave modes, while slave devices do not have a master mode. Different types of slave devices have different pull-down resistors R connected to their cc pins. Therefore, when different types of slave devices are inserted into device interface 30, the resistance value of the cc pin of the first Type-C interface 10 is different. The device under test 200 can determine the type of slave device connected based on the resistance value of the cc pin of the first Type-C interface 10, and then perform corresponding protocol matching. Furthermore, the third controllable switch S2 can be switched multiple times to test the recognition stability of the device under test 200.

[0049] It should be noted that the third controllable switch S2 can be a manual switch, which can be operated by the user to turn on and off. The third controllable switch S2 can also be controlled by the host computer 300 to realize the automated testing of the device under test 200.

[0050] In some embodiments, the slave device includes at least one of an audio device and a display device.

[0051] Understandably, the audio device can be a digital headset, an analog headset, or other audio playback device, and the display device can be a screen mirroring device, such as a screen mirroring device.

[0052] In the above embodiments, the third controllable switch can not only be used to control the device under test to identify the slave device, but also to test the identification stability of the device under test, thereby avoiding the wear and tear and reduced service life of the Type-C interface caused by repeated plugging and unplugging of the Type-C interface.

[0053] In summary, the device switching device according to this embodiment includes a first Type-C interface, an expansion device, multiple device interfaces, and a switching unit. The first Type-C interface is adapted to connect to the device under test. The expansion device is connected to each device interface, and each device interface is adapted to connect to an external device. The switching unit is connected to the cc pin and the ground pin of the first Type-C interface, respectively. The switching unit is configured to switch the connection mode between the cc pin and the ground pin of the first Type-C interface to switch between different external devices connected to the device under test. Therefore, by switching the connection state of the cc pin of the first Type-C interface through the switching unit, the device under test can be connected to different external devices, realizing the switching of multiple external devices and thus improving the testing efficiency of the device.

[0054] It should be understood that the various parts of this utility model can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0056] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0057] Furthermore, the terms "first," "second," etc., used in the embodiments of this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance, or implicitly specifying the number of technical features indicated in this embodiment. Therefore, features defined with terms such as "first" and "second" in the embodiments of this utility model can explicitly or implicitly indicate that the embodiment includes at least one of those features. In the description of this utility model, the word "multiple" means at least two or more, such as two, three, four, etc., unless otherwise explicitly specified in the embodiments.

[0058] In this utility model, unless otherwise explicitly specified or limited in the embodiments, the terms "installation," "connection," "joining," and "fixing" appearing in the embodiments should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral part; it can also be a mechanical connection, an electrical connection, etc. Of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two components, or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific implementation.

[0059] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0060] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A device switching apparatus, characterized in that, include: The first Type-C interface is suitable for connecting the device under test; An expansion device and multiple device interfaces, wherein the expansion device is connected to each of the device interfaces, and each of the device interfaces is adapted to connect an external device; A switching unit is connected to the cc pin and the ground pin of the first Type-C interface, respectively. The switching unit is configured to switch the connection mode between the cc pin and the ground pin of the first Type-C interface to switch different external devices to connect to the device under test.

2. The equipment switching device according to claim 1, characterized in that, The plurality of device interfaces include: USB interface, suitable for connecting OTG devices; The second Type-C interface is suitable for connecting the OTG device or charging device.

3. The equipment switching device according to claim 2, characterized in that, The switching unit includes: A first controllable switch, one end of which is connected to the ground pin of the first Type-C interface; A resistor, one end of which is connected to the cc pin of the first Type-C interface, and the other end of which is connected to the other end of the first controllable switch.

4. The equipment switching device according to claim 3, characterized in that, When the first controllable switch is turned on and the USB interface or the second Type-C interface is adapted to connect to the OTG device, the device under test is connected to the OTG device; When the first controllable switch is turned off and the second Type-C interface is adapted to connect to the charging device, the device under test is connected to the charging device.

5. The equipment switching device according to claim 3, characterized in that, The switching unit further includes: a second controllable switch, one end of which is connected to the other end of the resistor, and the other end of which is connected to the other end of the first controllable switch. The control terminal of the second controllable switch is adapted to be connected to a host computer so that, when the first controllable switch is turned on, the connection mode of the cc pin of the first Type-C interface can be switched according to the control command sent by the host computer.

6. The equipment switching device according to claim 5, characterized in that, The second controllable switch is a relay. The normally open terminal of the relay is connected to the other end of the resistor, the common terminal of the relay is connected to the other end of the first controllable switch, and the control terminal of the relay is adapted to be connected to the host computer.

7. The equipment switching device according to claim 6, characterized in that, When the control command is a power-on command, the device under test is connected to the OTG device; When the control command is a power-off command, the device under test is connected to the charging device.

8. The equipment switching device according to claim 5, characterized in that, The device under test is also adapted to communicate with the host computer. The device under test is configured to identify the type of the connected external device, obtain the identification result, and send the identification result to the host computer so that the host computer can determine whether the device under test has completed device switching based on the identification result.

9. The equipment switching device according to claim 3, characterized in that, The USB interface and the second Type-C interface are also adapted to connect a slave device. The switching unit further includes a third controllable switch, which is disposed between the first Type-C interface and the expansion device. The third controllable switch is also configured to switch the slave device to be connected to the first Type-C interface when the first controllable switch is turned off, so that the device under test can determine the type of the slave device based on the resistance value of the cc pin of the first Type-C interface.

10. The equipment switching device according to claim 9, characterized in that, The slave device includes at least one of an audio device and a display device.

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