CN113823971B - Interface conversion system and control method thereof - Google Patents

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The features of the application "first", "second" and the like in the description and in the claims may be used for the explicit or implicit inclusion of one or more such features. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In the description of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and for example, they may be directly connected, or they may be indirectly connected through an intermediate medium, or they may be in communication with each other between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

In the related art, if the charger is independently connected to the terminal interface of the terminal, the communication between the charger and the controller can be realized through a path where a data pin on the terminal interface is located; if the earphone is independently connected to the terminal interface of the terminal, the channel signal transmission between the earphone and the terminal can be realized through the channel where the data pin on the terminal interface is located. However, in the case where the charger and the earphone are simultaneously connected to the terminal, the channel where the data pin on the terminal interface of the terminal is located is preferentially used by the channel signal, so as to realize the channel signal transmission between the earphone and the terminal; at this time, compared with the terminal interface of the terminal to which the charger is connected independently, the channel where the data pin on the terminal interface of the terminal is located is occupied by the sound channel signal, that is, the communication between the charger and the controller cannot be realized through the channel where the data pin on the terminal interface of the terminal is located, the communication between the charger and the controller is interrupted, the charger is difficult to perform quick charging identification, the charger only supports charging of the electronic device with lower fixed power, and the charging power of the charger cannot be adjusted.

Based on the above, the present application provides an interface conversion system. The general conception of the application is that: a new communication path is established between the charger and the controller. Under the condition that the charger and the earphone are simultaneously connected to the terminal, the channel signal transmission between the earphone and the terminal can be realized through the channel where the data pin on the terminal interface is located, meanwhile, the communication between the charger and the controller is realized through the newly built communication channel, and the controller can be in communication interaction with the charger, so that the charging power of the charger is adjusted, and the charging rate is improved.

Exemplary embodiments of the present application will be described in more detail below with reference to fig. 1-8.

Fig. 1 is a schematic diagram of an interface conversion system according to an embodiment of the present application.

As shown in fig. 1, an interface conversion system provided in an embodiment of the present application may include: patch cord 100 and terminal 200;

The patch cord 100 includes: the charger adaptation end 101, the earphone adaptation end 102 and the terminal adaptation end 103 are respectively connected with the terminal adaptation end 103;

the terminal 200 includes: a terminal interface 201, an audio switch 202, and a controller 203; the terminal interface 201 is connected to the audio switch 202 and the controller 203, respectively.

Taking fig. 1 as an example, the charger adapter 101 has a data pin a1; the earphone adapter 102 has a channel pin b1; the terminal adapting terminal 103 is provided with a data pin a2, and the terminal adapting terminal 103 is also provided with a communication pin c1; the terminal interface 201 has a data pin a3 and the terminal interface 201 also has a communication pin c2.

As shown in fig. 1, in the case that the charger adaptation terminal 101 is connected to the charger 300, the earphone adaptation terminal 102 is connected to the earphone 400, and the terminal adaptation terminal 103 is connected to the terminal 200, the channel pin b1 of the earphone adaptation terminal 102 is connected to the audio switch through the data pin a2 of the terminal adaptation terminal 103 and the data pin a3 of the terminal interface 201; the data pin a1 of the charger adapter 101 is connected to the controller 203 through the communication pin c1 of the terminal adapter 103 and the communication pin c2 of the terminal interface 201, so that the charger 300 and the controller 203 can communicate to adjust the charging power of the charger. Therefore, under the condition that the terminal is connected with the earphone and the charger through the patch cord, the controller can be in communication interaction with the charger, so that the charging power of the charger is adjusted, and the charging rate is improved.

It can be understood that in the related art, if the charger is separately connected to the terminal interface of the terminal, the terminal interface realizes the communication between the charger and the controller through the path where the data pin on the terminal interface is located; if the earphone is independently connected to the terminal interface of the terminal, the terminal interface realizes the channel signal transmission between the earphone and the terminal through a channel where a data pin on the terminal interface is located. However, in the case where the charger and the earphone are simultaneously connected to the terminal, the channel on which the data pin on the terminal interface of the terminal is located is occupied by the channel signal, and at this time, the channel on which the data pin on the terminal interface of the terminal is located cannot realize communication between the charger and the controller, compared with the case where the charger is separately connected to the terminal interface of the terminal.

Based on this, in the embodiment of the present application, in the case that the charger and the earphone are simultaneously connected to the terminal, the data pin a1 of the charger adapter 101 is connected to the controller 203 through the communication pin c1 of the terminal adapter 103 and the communication pin c2 of the terminal interface 201, so that the charger 300 can communicate with the controller 203. In this way, in the case where the charger and the earphone are simultaneously connected to the terminal, the charger 300 and the controller 203 can communicate to adjust the charging power of the charger, so that the controller adjusts the charging power of the charger, and the charging rate is increased in the case where the terminal uses the earphone and the charger simultaneously through the patch cord.

The controller may specifically adjust the charging power of the charger, or may adjust the charging voltage of the charger, or may adjust the charging current of the charger. The following describes an example of adjusting the charging voltage of the charger.

For example, if the charging voltage of the charger defaults to 5 volts, when the charger 300 is in communication with the controller 203, the controller sends a control command to the charger to adjust the charging voltage of the charger, for example, instructs the charging voltage of the charger to adjust to 10 volts, and the charging voltage of the charger may be 10 volts. The charge rate may be increased by adjusting the charge power of the charger as compared to the charger's default fixed charge power.

In the embodiment of the present application, the charger 300 may be a Type-C interface charger or other types of chargers such as USB, and the present application is not limited in particular. Accordingly, the charger adapter 101 may be a Type-C interface charger adapter or other types of charger adapters such as USB, which is not particularly limited in the present application.

In the embodiment of the present application, the earphone 400 may be a 3.5 mm earphone or a Type-C earphone, or other types of earphone, and the present application is not limited in particular. Accordingly, the earphone adapter 102 may be a 3.5 mm earphone adapter or a Type-C earphone adapter, or other types of earphone adapters, which is not particularly limited by the present application.

In the embodiment of the present application, the types of the terminal adapting terminal 103 and the terminal interface 201 may be Type-C interfaces, or other types of interfaces, and the present application is not limited in particular.

In the embodiment of the present application, the terminal 200 may be a mobile terminal, a portable terminal, etc., such as a smart phone, a tablet computer, or other terminals, and the present application is not limited in particular.

The interface conversion system provided by the embodiment of the application comprises an adapter wire and a terminal; the patch cord includes: the device comprises a charger adaptation end, an earphone adaptation end and a terminal adaptation end, wherein the charger adaptation end and the earphone adaptation end are respectively connected with the terminal adaptation end; the terminal comprises: the system comprises a terminal interface, an audio switch and a controller; the terminal interface is respectively connected with the audio switch and the controller; under the conditions that the charger adaptation end is connected with the charger, the earphone adaptation end is connected with the earphone and the terminal adaptation end is connected with the terminal, the sound channel pin of the earphone adaptation end is connected with the audio switch through the data pin of the terminal adaptation end and the data pin of the terminal interface; the data pin of the charger adaptation end is connected with the controller through the communication pin of the terminal adaptation end and the communication pin of the terminal interface, so that the charger and the controller can communicate to adjust the charging power of the charger. Therefore, under the condition that the terminal is connected with the earphone and the charger through the patch cord, the data pin of the charger adapter end is connected with the controller through the communication pin of the terminal adapter end and the communication pin of the terminal interface, and the controller can perform communication interaction with the charger, so that the charging power of the charger is adjusted, and the charging rate is improved.

Fig. 2 is a schematic diagram of another interface conversion system according to an embodiment of the present application.

It can be understood that, in order to accurately conduct the path where the communication signal between the charger and the controller is located at the moment when the charger adaptation end is connected with the charger, the earphone adaptation end is connected with the earphone and the terminal adaptation end is connected with the terminal, the interface conversion system provided by the embodiment of the application can further comprise a switch module arranged between the communication pin of the terminal interface and the controller. The following will specifically describe the case of fig. 2.

In a specific embodiment, as shown in fig. 2, the interface conversion system provided in the embodiment of the present application may further include: the switch module 204, the switch module 204 is connected with the controller 203, and the switch module 204 is connected with a communication pin of the terminal interface 201.

The switch module 204 is a module with a switch function, and may be used to conduct a circuit between a communication pin of the terminal interface and the controller. The switch module may be a field effect transistor, a double pole double throw switch, or other types of switches, and the present application is not particularly limited.

Like this, when charger adaptation end is connected with the charger, earphone adaptation end is connected with the earphone and terminal adaptation end links to each other with the terminal, through switch-on module, control terminal interface's communication pin links to each other with the controller to adjust the data pin of charger adaptation end and pass through terminal adaptation end's communication pin with terminal interface's communication pin links to each other with the controller, makes the charger with the controller can communicate in order to adjust the charge power of charger.

Fig. 3 is a schematic diagram of another interface conversion system according to an embodiment of the present application.

It can be understood that in practical application, the channel signal of the earphone is divided into a left channel signal and a right channel signal, and the communication signal between the charger and the controller is also divided into a receiving signal and a transmitting signal. Based on this, a specific circuit case in which the charger 300 can communicate with the controller 203 in the case where the charger and the earphone are simultaneously connected to the terminal will be described in detail below. The following will specifically describe by taking fig. 3 as an example.

In a specific embodiment, as shown in fig. 3, in the interface conversion system provided in the embodiment of the present application, the channel pin b1 of the earphone adapter 102 may include a first channel pin L and a second channel pin R;

As shown in fig. 3, the data pin a1 of the charger adapter 101 may include a first data pin d1+ and a second data pin D1-; the data pin a2 of the terminal adaptation terminal 103 may include a first matching data pin d2+ and a second matching data pin D2-, and the communication pin c1 of the terminal adaptation terminal 103 may include a first communication pin TX1+ and a second communication pin TX1-;

As shown in fig. 3, the data pin a3 of the terminal interface 201 may include: the third match data pin d3+, the fourth match data pin D3-, the communication pin c2 of the terminal interface 201 may include: a third communication pin TX < 2+ > and a fourth communication pin TX < 2-;

as shown in fig. 3, in the case that the charger adaptation terminal 101 is connected to the charger 300, the earphone adaptation terminal 102 is connected to the earphone 400, and the terminal adaptation terminal 103 is connected to the terminal 200, the first channel pin L is connected to the first matching data pin d2+, the second channel pin R is connected to the second matching data pin D2-, the first matching data pin d2+ is connected to the third matching data pin d3+, and the second matching data pin D2-is connected to the fourth matching data pin D3-; the third matching data pin D3+ and the fourth matching data pin D3-are connected with an audio switch;

As shown in fig. 3, in the case that the charger adaptation terminal 101 is connected to the charger 300, the earphone adaptation terminal 102 is connected to the earphone 400, and the terminal adaptation terminal 103 is connected to the terminal 200, the first data pin d1+ is connected to the first communication pin TX1+, and the second data pin D1-is connected to the second communication pin TX 1-; the first communication pin TX1+ is connected with the third communication pin TX2+, and the second communication pin TX 1-is connected with the fourth communication pin TX 2-; the third communication pin TX < 2+ > and the fourth communication pin TX < 2 > -are both connected with a controller.

The path through which the left channel signal of the earphone passes may include a first channel pin L, a first matching data pin d2+, a third matching data pin d3+, and an audio switch. The path through which the right channel signal of the earphone passes may include a second sound pin R, a second matching data pin D2-, a fourth matching data pin D3-, and an audio switch. In this way, the terminal 200 is enabled to perform transmission of the left channel signal and the right channel signal using the earphone 400 through the patch cord 100.

The path through which the transmission signal TXD (TRANSMIT DATA, transmission data) between the charger and the controller passes may include a first data pin d1+, a first communication pin TX1+, a third communication pin TX2+ and the controller. The path between the charger and the controller through which the received signal RXD (RECEIVE DATA, received data) passes may include a second data pin D1-, a second communication pin TX1-, a fourth communication pin TX2-, and the controller. Therefore, under the condition that the terminal is connected with the earphone and the charger through the patch cord, the controller can perform communication interaction with the charger, so that the charging power of the charger is adjusted, and the charging rate is improved.

Fig. 4-5 are schematic diagrams of another interface conversion system according to an embodiment of the present application.

It can be understood that, in order to accurately conduct the path where the communication signal between the charger and the controller is located at the moment when the charger adapter is connected with the charger, the earphone adapter is connected with the earphone and the terminal adapter is connected with the terminal, the charger and the controller can communicate to adjust the charging power of the charger, the interface conversion system provided by the embodiment of the application may further include a switch module and a controller, wherein the switch module and the controller are arranged between the communication pin of the terminal interface and the controller. The following is a detailed description of the examples of fig. 4-5.

In a specific embodiment, as shown in fig. 4, the interface conversion system provided in the embodiment of the present application may further include: a switch module 204 and a processor 205;

as shown in fig. 4-5, the switch module 204 includes a first switch assembly 2041 and a second switch assembly 2042;

As shown in fig. 5, the first switch assembly 2041 has a first end, a second end, and a third end; a first end of the first switch component is connected with the controller 203, a second end of the first switch component is connected with a third communication pin TX2+ of the terminal interface 201, and a third end of the first switch component is connected with the processor 205;

As shown in fig. 5, the second switch assembly 2042 has a first end, a second end, and a third end; the first end of the second switch assembly is connected to the controller 203, the second end of the second switch assembly is connected to the fourth communication pin TX2 of the terminal interface 201, and the third end of the second switch assembly is connected to the processor 205.

As shown in fig. 5, it can be appreciated that the third terminal G1 of the first switching element 2041 may be a control terminal of the first switching element, and the third terminal G2 of the second switching element 2042 may be a control terminal of the second switching element. In the case that the charger adapting terminal is connected to the charger, the earphone adapting terminal is connected to the earphone, and the terminal adapting terminal is connected to the terminal, the processor 205 may simultaneously send the on signal to the third terminal G1 of the first switch assembly 2041 and the third terminal G2 of the second switch assembly 2042, respectively, so as to turn on the first switch assembly 2041 and the second switch assembly 2042. In this way, the third communication pin TX2+ and the fourth communication pin TX 2-of the terminal interface 201 are connected to the controller by turning on the first switching element 2041 and the second switching element 2042, so that the first data pin d1+ and the second data pin D1-of the charger adapter 101 are connected to the controller through the first communication pin TX1+ and the second communication pin TX 1-of the terminal adapter 103 and the third communication pin TX2+ and the fourth communication pin TX 2-of the terminal interface 201, so that the charger can communicate with the controller to adjust the charging power of the charger.

For example, in one embodiment, the first switching element 2041 may be a first metal-oxide semiconductor field effect transistor and the second switching element 2042 may be a second metal-oxide semiconductor field effect transistor; the third terminal G1 of the first switch element 2041 is a gate, and the third terminal G2 of the second switch element 2042 is a gate.

In particular, the first metal-oxide semiconductor field effect transistor may be an N-type metal-oxide-semiconductor field effect transistor, or a P-type metal-oxide-semiconductor field effect transistor. In the case where the first mosfet is an nmos, the first terminal of the first switching element 2041 may be a source and the second terminal of the first switching element 2041 may be a drain; in the case where the first mosfet is a pmos, the first terminal of the first switching element 2041 may be a drain and the second terminal of the first switching element 2041 may be a source.

Similarly, the second metal-oxide semiconductor field effect transistor may be an N-type metal-oxide-semiconductor field effect transistor, or a P-type metal-oxide-semiconductor field effect transistor. In the case where the second mosfet is an nmos, the first terminal of the second switching element 2042 may be a source and the second terminal of the second switching element 2042 may be a drain; in the case where the second mosfet is a pmos, the first terminal of the second switching element 2042 may be a drain and the second terminal of the second switching element 2042 may be a source.

In this way, the third and fourth communication pins TX2+ and TX 2-of the terminal interface 201 are connected to the controller by turning on the two metal-oxide semiconductor field effect transistors, so that the first and second data pins d1+ and D1-of the charger adaptation terminal 101 are connected to the controller through the first and second communication pins TX1+ and TX 1-of the terminal adaptation terminal 103 and the third and fourth communication pins TX2+ and TX 2-of the terminal interface 201, so that the charger can communicate with the controller to adjust the charging power of the charger.

In the above, in the case that the charger adapting terminal is connected to the charger, the earphone adapting terminal is connected to the earphone, and the terminal adapting terminal is connected to the terminal, the processor 205 may simultaneously send the on signal to the third terminal G1 of the first switch assembly 2041 and the third terminal G2 of the second switch assembly 2042, respectively, so as to turn on the first switch assembly 2041 and the second switch assembly 2042. The manner how the processor detects that the charger adaptation end is connected to the charger, the earphone adaptation end is connected to the earphone, and the terminal adaptation end is connected to the terminal is described in detail below. The following will specifically describe by taking fig. 6 as an example.

Fig. 6 is a schematic diagram of another interface conversion system according to an embodiment of the present application.

In a specific embodiment, as shown in fig. 6, in the interface conversion system provided in the embodiment of the present application, the terminal adapting terminal 103 further includes a first detection pin CC1 and a second detection pin CC2; the charger adaptation terminal 101 further comprises a voltage pin VBUS;

The first detection pin CC1 is connected to the voltage pin VBUS of the charger adapter 101, and the first detection pin CC1 is grounded through a resistor; the first detection pin CC1 is connected to the processor 205 through a first matching detection pin CC1' of the terminal interface 201; the second detection pin CC2 is connected to the detection pin CC of the earphone adapter 102, and the second detection pin CC2 is connected to the processor 205 through a second matching detection pin CC2' of the terminal interface 201.

It can be understood that, for the earphone adapter 102, when the earphone adapter is connected to the earphone and the terminal adapter is connected to the terminal, the detection pin CC of the earphone adapter 102 is at a low level, and at this time, the second matching detection pin CC2' of the terminal interface 201 sends a low level signal to the processor 205; in the case where the earphone adapter is disconnected from the earphone, the detection pin CC of the earphone adapter 102 is at a high level (e.g., the detection pin CC may be regarded as a high level in the case of suspending), and at this time, the second matching detection pin CC2' of the terminal interface 201 sends a high level signal to the processor 205.

It can be understood that, for the terminal adapting terminal 103, when the charger adapting terminal is connected to the charger and the terminal adapting terminal is connected to the terminal, the voltage pin VBUS of the charger adapting terminal 101 is at a high level, so that the first detection pin CC1 of the terminal adapting terminal 103 is at a high level, and at this time, the first match detection pin CC1' of the terminal interface 201 sends a high level signal to the processor 205; in the case that the charger adaptation terminal is disconnected from the charger, the first detection pin CC1 of the terminal adaptation terminal 103 is at a low level, and at this time, the first matching detection pin CC1' of the terminal interface 201 sends a low level signal to the processor 205.

Thus, if the second match detection pin CC2 'of the terminal interface 201 sends a low level signal to the processor 205 and the first match detection pin CC1' of the terminal interface 201 sends a high level signal to the processor 205, the processor may detect that the charger adaptation end is connected to the charger, the earphone adaptation end is connected to the earphone and the terminal adaptation end is connected to the terminal. When detecting that the charger adaptation end is connected with the charger, the earphone adaptation end is connected with the earphone and the terminal adaptation end is connected with the terminal, the processor can send a conducting signal to the switch module 204 at the same time to conduct the switch module 204, so that the charger and the controller can communicate to adjust the charging power of the charger.

In practical applications, for ease of understanding, both the terminal adapting terminal 103 and the terminal interface 201 may be Type-C interfaces. The following is an example of fig. 7 (a) and 7 (b).

Fig. 7 (a) is a schematic diagram of a part of an interface conversion system according to an embodiment of the present application.

Fig. 7 (b) is a schematic diagram of a portion of another interface conversion system according to an embodiment of the present application.

Fig. 7 (a) and fig. 7 (b) may together form a schematic diagram of an interface conversion system according to an embodiment of the present application.

In a specific embodiment, as shown in fig. 7 (a), the patch cord 100 includes: charger adaptation end 101, earphone adaptation end 102, terminal adaptation end 103. Wherein the earphone adapter 102 may be a 3.5 mm earphone adapter. As shown in fig. 7 (b), the terminal 200 includes: a terminal interface 201, an audio switch 202 and a controller 203.

As shown in fig. 7 (a), the charger adaptation terminal 101 may be a Type-C charger adaptation terminal. The Type-C charger adapter can be provided with 24 pins, wherein the Type-C charger adapter comprises 12 pins of an A surface and 12 pins of a B surface, and the pins of the A surface and the B surface have the same efficacy, so that the forward and reverse plug function can be realized. Taking the 12 pins of the a-side as an example, the A1 pin and the a12 pin may be named GND (Ground), the A2 pin and the A3 pin may be named TX1+ and TX1 (a pair representing the transmitted differential signal), the a10 pin and the a11 pin may be named RX2+ and RX2 (a pair representing the received differential signal), the A4 pin and the A9 pin may be named VBUS (power line), the A5 pin may be named CC1 (Configuration Channel, detection channel 1), the A6 pin and the A7 pin may be named d+ and D (representing a pair of differential data signals), respectively, and the A8 pin may be named SBU1 (sideband channel 1). The 12 pins on the B-side of the charger adapter 101 are similar to those on the a-side of the charger adapter 101, refer to fig. 7 (a), and will not be described again here.

The terminal adaptation terminal 103 may be a Type-C terminal adaptation terminal. The pin naming of the Type-C charger adapter 101 is referred to, and will not be described herein.

The terminal interface 201 may be a Type-C terminal interface. The pin naming of the terminal interface 201 may refer to the Type-C charger adapter 101, and will not be described herein.

Referring to fig. 7 (a) -7 (B), description will be given taking an example in which the B-face of the charger adapter 101 is connected to the charger, the a-face of the charger adapter 101 is connected to the B-face of the terminal adapter 103, the 3.5 mm earphone adapter is connected to the B-face of the terminal adapter 103, the a-face of the terminal adapter 103 is connected to the B-face of the terminal interface 201, and the a-face of the terminal interface 201 is connected to the audio switch 202, the first switch assembly 2041, and the second switch assembly 2042, respectively.

Wherein, the pin A1, the pin A12, the pin B1 and the pin B12 of the charger adapter 101 are all grounded; the B4 pin and the B9 pin of the charger adapter 101 are connected with a power line of the charger; the B6 pin and the B7 pin of the charger adapter end 101 are connected with signal lines of the charger; the pin A4 and the pin A9 of the charger adapter end 101 are respectively connected with the pin B4 and the pin B9 of the terminal adapter end 103; the pin A6 and pin A7 of the charger adapter 101 are respectively connected to the pin B2 and pin B3 of the terminal adapter 103.

The 3.5 mm earphone adapter 102 has 6 pins, which may be designated as M/G, R, L, DET, DET2, and G/M in sequence. Wherein the first pin M/G and the sixth pin G/M of the 3.5 mm earpiece fitting 102 may represent M (Microphone) and G (Ground), respectively, and the first pin and the sixth pin may be swapped in place. The first pin M/G and the sixth pin G/M of the 3.5 mm earpiece mating terminal 102 may be coupled to the A8 pin and the B8 pin of the terminal mating terminal 103, respectively. The second pin R and the third pin L of the 3.5 mm earpiece mating terminal 102 may represent a second channel pin and a first channel pin, respectively, and may be connected to the B7 pin and the B6 pin of the terminal mating terminal 103, respectively. The fourth pin DET1 of the 3.5 mm earpiece adaptation terminal 102 may represent the detection pin CC, and the fifth pin DET2 of the 3.5 mm earpiece adaptation terminal 102 may be grounded, and in the case of the earpiece being connected to the earpiece adaptation terminal, the switch between the fourth pin DET1 and the fifth pin DET2 is turned on, so that the fourth pin DET1 is at a low level.

Wherein, the pin A1, the pin A12, the pin B1 and the pin B12 of the terminal adapting end 103 are all grounded; the pin A4 and the pin A9 of the terminal adapting end 103 are respectively connected with the pin B4 and the pin B9 of the terminal interface 201; the pin A2 and the pin A3 of the terminal adapting end 103 are respectively connected with the pin B2 and the pin B3 of the terminal interface 201; the A5 pin of the terminal adapting end 103 is connected with the A4 pin of the charger adapting end 101 through a resistor Ra, and the A5 pin of the terminal adapting end 103 is grounded through a resistor Rb; the pin A6 and pin A7 of the terminal adapter 103 are connected to the pin B6 and pin B7 of the terminal interface 201, respectively.

Wherein, the pin A1, the pin a12, the pin B1 and the pin B12 of the terminal interface 201 are all grounded; the pin A2 of the terminal interface 201 is connected to the second end of the first switch assembly 2041; the pin A3 of the terminal interface 201 is connected to the second end of the second switch assembly 2042; the pin A4 and the pin A9 of the terminal interface 201 are connected with the third end of the charging management chip 207; both the pin A5 and the pin B5 of the terminal interface 201 are connected to the processor 205; the A6 pin of the terminal interface 201 is connected with the DP pin of the audio switch; the A7 pin of the terminal interface 201 is connected with the DM pin of the audio switch; the pin A8 and the pin B8 of the terminal interface 201 are respectively connected with the pin SBU1 and the pin SBU2 of the audio switch.

As shown in fig. 7 (a), in the interface conversion system provided in the embodiment of the present application, the channel pins of the earphone adapter 102 may include a first channel pin (i.e., the L pin of the earphone adapter 102) and a second channel pin (i.e., the R pin of the earphone adapter 102);

As shown in fig. 7 (a), the data pins of the charger adaptation terminal 101 may include a first data pin (i.e., the A6 pin and the B6 pin of the charger adaptation terminal 101) and a second data pin (i.e., the A7 pin and the B7 pin of the charger adaptation terminal 101); the data pins of the terminal adaptation terminal 103 may include a first matching data pin (i.e., the A6 pin and the B6 pin of the terminal adaptation terminal 103), a second matching data pin (i.e., the A7 pin and the B7 pin of the terminal adaptation terminal 103), and the communication pins of the terminal adaptation terminal 103 may include a first communication pin (i.e., the A2 pin and the B2 pin of the terminal adaptation terminal 103) and a second communication pin (i.e., the A3 pin and the B3 pin of the terminal adaptation terminal 103);

As shown in fig. 7 (b), the data pins of the terminal interface 201 may include: the third match data pin (i.e., the A6 pin and the B6 pin of the terminal interface 201), the fourth match data pin (i.e., the A7 pin and the B7 pin of the terminal interface 201), the communication pins of the terminal interface 201 may include: a third communication pin (i.e., the A2 pin and the B2 pin of the terminal interface 201) and a fourth communication pin (i.e., the A3 pin and the B3 pin of the terminal interface 201).

As shown in fig. 7 (a) -7 (B), the terminal adaptation end 103 may further include a first detection pin A5 and a second detection pin B5; the charger adaptation terminal 101 may further comprise a voltage pin A4;

The first detection pin A5 of the terminal adapting terminal 103 may be connected to the voltage pin A4 of the charger adapting terminal 101 through a resistor Ra, and the first detection pin A5 of the terminal adapting terminal 103 is grounded through a resistor Rb; the first detection pin A5 of the terminal adapter 103 is connected to the processor 205 through the first matching detection pin A5 of the terminal interface 201; the second detection pin B5 of the terminal adapter 103 is connected to the detection pin CC of the earphone adapter 102, and the second detection pin B5 of the terminal adapter 103 is connected to the processor 205 through the second matching detection pin B5 of the terminal interface 201.

As shown in fig. 7 (a) -7 (B), for the earphone adapter 102, when the earphone adapter is connected to the earphone and the terminal adapter is connected to the terminal, the detection pin CC of the earphone adapter 102 is grounded, i.e. is at a low level, and at this time, the second matching detection pin B5 of the terminal interface 201 sends a low level signal to the processor 205; in the case where the earphone adapter is disconnected from the earphone, the detection pin CC of the earphone adapter 102 is at a high level (e.g., the detection pin CC may be regarded as a high level in the case of being suspended), and at this time, the second matching detection pin B5 of the terminal interface 201 sends a high level signal to the processor 205.

As shown in fig. 7 (a) -7 (b), for the terminal adapting terminal 103, in the case that the charger adapting terminal is connected to the charger and the terminal adapting terminal is connected to the terminal, the voltage pin A4 of the charger adapting terminal 101 is at a high level, so that the first detection pin A5 of the terminal adapting terminal 103 is at a high level, and at this time, the first matching detection pin A5 of the terminal interface 201 sends a high level signal to the processor 205; in the case where the charger adaptation terminal is disconnected from the charger, the first detection pin A5 of the terminal adaptation terminal 103 is at a low level, and at this time, the first match detection pin A5 of the terminal interface 201 sends a low level signal to the processor 205.

Thus, if the second match detection pin B5 of the terminal interface 201 sends a low level signal to the processor 205 and the first match detection pin A5 of the terminal interface 201 sends a high level signal to the processor 205, the processor may detect that the charger adaptation end is connected to the charger, the earphone adaptation end is connected to the earphone, and the terminal adaptation end is connected to the terminal. When the processor detects that the charger adaptation end is connected to the charger, the earphone adaptation end is connected to the earphone, and the terminal adaptation end is connected to the terminal, the processor 205 may send on signals to the gate G1 of the first metal-oxide semiconductor field effect transistor 2041 and the gate G2 of the second metal-oxide semiconductor field effect transistor 2042 simultaneously to turn on the first metal-oxide semiconductor field effect transistor 2041 and the second metal-oxide semiconductor field effect transistor 2042 so that the charger and the controller can communicate to adjust the charging power of the charger.

It is understood that, in the case where the charger communicates with the controller, a first path for receiving a communication signal and a second path for transmitting a communication signal may be respectively included between the charger and the controller. Described in detail below.

As shown in fig. 7 (a), 7 (B), in the case where the charger adaptation terminal 101 is connected to the charger 300, the earphone adaptation terminal 102 is connected to the earphone 400, and the terminal adaptation terminal 103 is connected to the terminal 200, the first data pin (i.e., the A6 pin of the charger adaptation terminal 101) is connected to the first communication pin (i.e., the B2 pin of the terminal adaptation terminal 103), and the second data pin (i.e., the A7 pin of the charger adaptation terminal 101) is connected to the second communication pin (i.e., the B3 pin of the terminal adaptation terminal 103); the first communication pin (i.e., the A2 pin of the terminal adapter 103) is connected to the third communication pin (i.e., the B2 pin of the terminal interface 201), and the second communication pin (i.e., the A3 pin of the terminal adapter 103) is connected to the fourth communication pin (i.e., the B3 pin of the terminal interface 201); the third communication pin (i.e., the A2 pin of the terminal interface 201) is connected to the controller through the first switch assembly 2041, and the fourth communication pin (i.e., the A3 pin of the terminal interface 201) is connected to the controller through the second switch assembly 2042.

In fig. 7 (a), 7 (B), the first path through which the received signal RXD (RECEIVE DATA, received data) between the charger and the controller passes may include a second data pin (i.e., the B7 pin and the A7 pin of the charger adaptation terminal 101), a second communication pin (i.e., the B3 pin and the A3 pin of the terminal adaptation terminal 103), a fourth communication pin (i.e., the B3 pin and the A3 pin of the terminal interface 201), a second switching component 2042, and the controller.

In fig. 7 (a), 7 (B), the second path through which the transmission signal TXD (TRANSMIT DATA, transmission data) between the charger and the controller passes may include a first data pin (i.e., the B6 pin and the A6 pin of the charger adaptation terminal 101), a first communication pin (i.e., the B2 pin and the A2 pin of the terminal adaptation terminal 103), a third communication pin (i.e., the B2 pin and the A2 pin of the terminal interface 201), a first switching component 2041, and the controller.

Therefore, under the condition that the terminal is connected with the earphone and the charger through the patch cord, the controller can communicate and interact with the charger through the first passage and the second passage, so that the charging power of the charger is adjusted, and the charging rate is improved.

Among them, it can be understood that, as shown in fig. 7 (a) -7 (b), the terminal 200 further includes an audio codec 208 for encoding and decoding the left channel signal and the right channel signal. The following is a detailed description.

As shown in fig. 7 (a), 7 (B), in the case that the charger adaptation terminal 101 is connected to the charger 300, the earphone adaptation terminal 102 is connected to the earphone 400, and the terminal adaptation terminal 103 is connected to the terminal 200, the first channel pin (i.e., the L pin of the earphone adaptation terminal 102) is connected to the first matching data pin (i.e., the B6 pin of the terminal adaptation terminal 103), the second channel pin (i.e., the R pin of the earphone adaptation terminal 102) is connected to the second matching data pin (i.e., the B7 pin of the terminal adaptation terminal 103), the first matching data pin (i.e., the A6 pin of the terminal adaptation terminal 103) is connected to the third matching data pin (i.e., the B6 pin of the terminal interface 201), and the second matching data pin (i.e., the A7 pin of the terminal adaptation terminal 103) is connected to the fourth matching data pin (i.e., the B7 pin of the terminal interface 201); the third match data pin (i.e., the A6 pin of the terminal interface 201) is connected to the DP pin of the audio switch, and the fourth match data pin (i.e., the A7 pin of the terminal interface 201) is connected to the DM pin of the audio switch.

Thus, in fig. 7 (a), 7 (B), in the case where the earphone adaptation terminal is connected to the earphone and the terminal adaptation terminal is connected to the terminal, the path through which the left channel signal of the earphone passes may include the first channel pin (i.e., the L pin of the earphone adaptation terminal 102), the first matching data pin (i.e., the B6 pin and the A6 pin of the terminal adaptation terminal 103), the third matching data pin (i.e., the B6 pin and the A6 pin of the terminal interface 201), the DP pin and the L pin of the audio switch 202, and the audio codec 208. The path through which the right channel signal of the headset passes may include a second sound pin (i.e., the R pin of the headset adaptation terminal 102), a second matching data pin (i.e., the B7 pin and the A7 pin of the terminal adaptation terminal 103), a fourth matching data pin (i.e., the B7 pin and the A7 pin of the terminal interface 201), the DM pin and the R pin of the audio switch 202, and the audio codec 208. In this way, the terminal 200 can perform transmission of the left channel signal and the right channel signal using the earphone 400 through the patch cord 100.

In a particular embodiment, as shown in fig. 7 (b), the processor 205 may control the audio switch 202 to switch between the first mode of operation, the second mode of operation, and the third mode of operation.

Specifically, in the case where the processor 205 controls the audio switch 202 to perform the first operation mode, the signals at the DP pin and the DM pin of the audio switch 202 are switched to the dp_ap1 pin and the dm_ap1 pin of the audio switch 202, and the terminal performs the data transmission operation mode.

In the case where the processor 205 controls the audio switch 202 to perform the second mode of operation, the signals at the DP pin and the DM pin in the audio switch 202 switch to the dp_ap2 pin and the dm_ap2 pin of the audio switch 202, and the terminal may perform the charging communication mode.

In the case where the processor 205 controls the audio switch 202 to perform the third operation mode, signals at the DP pin and the DM pin in the audio switch 202 are switched to the L pin and the R pin of the audio switch 202, and the audio play mode is performed.

It can be appreciated that the problems in the related art can be described by way of example with reference to the audio switch mentioned in fig. 7 (b). Specifically, in the related art, if the charger is separately connected to the terminal interface of the terminal, the audio switch 202 is in the second working mode, and signals at the DP pin and the DM pin in the audio switch 202 are switched to the dp_ap2 pin and the dm_ap2 pin of the audio switch 202, so that the communication between the charger and the controller can be realized through the path where the data pins (i.e., the A6 pin, the A7 pin, and the B6 pin B7 pin of the terminal interface 201) on the terminal interface 201 are located; if the earphone is separately connected to the terminal interface of the terminal, the audio switch 202 is in the third working mode, signals at the DP pin and the DM pin in the audio switch 202 are switched to the L pin and the R pin of the audio switch 202, and the channel signal transmission between the earphone and the terminal can be realized through the path where the data pins (i.e., the A6 pin, the A7 pin, and the B6 pin B7 pin of the terminal interface 201) on the terminal interface are located. However, in the case where the charger and the earphone are simultaneously connected to the terminal, the audio switch 202 is in the third operation mode, and the channel on which the data pin on the terminal interface of the terminal is located is used by the channel signal, so as to realize the channel signal transmission between the earphone and the terminal; at this time, compared with the terminal interface of the terminal to which the charger is connected independently, the channel of the data pin on the terminal interface of the terminal is occupied by the sound channel signal, that is, the communication between the charger and the controller cannot be realized through the channel of the data pin on the terminal interface of the terminal, and further, the communication between the charger and the controller is interrupted, the charger is difficult to perform quick charging identification, only the charging of the electronic equipment with lower fixed power is supported, and the charging power of the charger cannot be adjusted.

In the embodiment of the present application, referring to fig. 7 (b), in the case that the earphone adapting end is connected to the earphone and the terminal adapting end is connected to the terminal, the processor 205 controls the audio switch 202 to execute the audio playing mode, the signal at the DP pin of the audio switch 202 is switched to the L pin of the audio switch 202, the signal at the DM pin of the audio switch 202 is switched to the R pin of the audio switch 202, and the terminal 200 can transmit the left channel signal and the right channel signal by using the earphone 400 through the audio switch 202; meanwhile, in the embodiment of the application, the controller and the charger are in communication interaction through the newly-built communication channels (namely the first channel for receiving the communication signals and the second channel for sending the communication signals), so that the charging power of the charger is adjusted, and the charging rate is improved.

In addition, the above embodiment of the interface conversion system shown in fig. 7 (a) describes an example of a patch cord with a 3.5 mm earphone adapter, and the following may also describe an example of a patch cord with a Type-C earphone adapter. The following is an example of the earphone adapter 102 being a Type-C earphone adapter with reference to fig. 7 (C).

Fig. 7 (c) is a schematic diagram of a portion of another interface conversion system according to an embodiment of the present application.

Fig. 7 (c) and fig. 7 (b) may together form a schematic diagram of another interface conversion system according to an embodiment of the present application.

In a specific embodiment, as shown in fig. 7 (C), the earphone adapter 102 may be a Type-C earphone adapter. The pin naming of the Type-C earphone adapter may refer to the Type-C charger adapter 101, and will not be described herein.

As shown in fig. 7 (C), the detection pin B5 of the Type-C earphone adapter 102 is connected to a target channel pin of the first channel pin B6 and the second channel pin B7; under the condition that the earphone adapting end is connected with the earphone, the target sound channel pin is grounded through a resistor.

Wherein, as shown in fig. 7 (c), the target channel pin may be a first channel pin B6; in the case where the earphone adapter is connected to an earphone, the impedance to ground of the first channel pin B6 (i.e., the pin through which the left channel signal passes) may be 32 ohms. Like this, under the condition that earphone adaptation end links to each other with the earphone, the detection pin B5 of Type-C earphone adaptation end 102 is connected with first sound track pin B6, is equivalent to the detection pin B5 of Type-C earphone adaptation end 102 and passes through 32 ohm resistance ground, and the detection pin B5 of Type-C earphone adaptation end 102 is the low level this moment. In addition, in the case that the earphone adapter is disconnected from the earphone, the detection pin B5 of the Type-C earphone adapter 102 is in a suspended state, and the detection pin B5 of the Type-C earphone adapter 102 may be regarded as a high level.

Thus, as shown in fig. 7 (B) -7 (C), for the Type-C earphone adapter 102, when the earphone adapter is connected to the earphone and the terminal adapter is connected to the terminal, the detection pin B5 of the earphone adapter 102 is at a low level, and at this time, the second match detection pin B5 of the terminal interface 201 sends a low level signal to the processor 205; in the case where the earphone adapter is disconnected from the earphone, the detection pin B5 of the earphone adapter 102 is at a high level, and at this time, the second matching detection pin B5 of the terminal interface 201 sends a high level signal to the processor 205.

As shown in fig. 7 (b) -7 (c), for the terminal adapting terminal 103, in the case that the charger adapting terminal is connected to the charger and the terminal adapting terminal is connected to the terminal, the voltage pin A4 of the charger adapting terminal 101 is at a high level, so that the first detection pin A5 of the terminal adapting terminal 103 is at a high level, and at this time, the first matching detection pin A5 of the terminal interface 201 sends a high level signal to the processor 205; in the case where the charger adaptation terminal is disconnected from the charger, the first detection pin A5 of the terminal adaptation terminal 103 is at a low level, and at this time, the first match detection pin A5 of the terminal interface 201 sends a low level signal to the processor 205.

Thus, if the second match detection pin B5 of the terminal interface 201 sends a low level signal to the processor 205 and the first match detection pin A5 of the terminal interface 201 sends a high level signal to the processor 205, the processor may detect that the charger adaptation end is connected to the charger, the earphone adaptation end is connected to the earphone, and the terminal adaptation end is connected to the terminal. When the processor detects that the charger adaptation end is connected to the charger, the earphone adaptation end is connected to the earphone, and the terminal adaptation end is connected to the terminal, the processor 205 may send on signals to the gate G1 of the first metal-oxide semiconductor field effect transistor 2041 and the gate G2 of the second metal-oxide semiconductor field effect transistor 2042 simultaneously to turn on the first metal-oxide semiconductor field effect transistor 2041 and the second metal-oxide semiconductor field effect transistor 2042 so that the charger and the controller can communicate to adjust the charging power of the charger.

In addition, the embodiment of the present application may also be described by way of example as a path through which a charging current between the charger 300 and the battery of the terminal 200 passes. As shown in fig. 4, in the interface conversion system provided in the embodiment of the present application, the terminal 200 may further include a charge management chip 207 and a battery 206, where the charge management chip 207 has a first end, a second end and a third end.

As shown in fig. 4, a first end of the charge management chip 207 is connected to the controller 203, and a second end of the charge management chip 207 is connected to the battery 206;

As shown in fig. 4, the terminal interface 201 has a matching voltage pin VBUS ', the third terminal of the charging management chip 207 is connected to the matching voltage pin VBUS ' of the terminal interface, and the matching voltage pin VBUS ' of the terminal interface 201 is connected to the voltage pin VBUS of the charger adapter through the terminal adapter.

The path through which the charging current between the charger 300 and the battery 206 of the terminal 200 passes includes a voltage pin VBUS of the charger adapter, the terminal adapter, and a matching voltage pin VBUS' of the terminal interface, and third and second ends of the charging management chip 207. In this way, the charging current may sequentially pass through the voltage pin VBUS of the charger 300 and the charger adapter, the terminal adapter, and the matching voltage pin VBUS' of the terminal interface, and the third end and the second end of the charging management chip 207, and finally enter the battery 206.

In another specific embodiment, for an interface conversion system formed by fig. 7 (a) and 7 (b), a path through which a charging current between the charger 300 and the battery of the terminal 200 passes may be specifically described.

Specifically, in fig. 7 (a), 7 (B), the voltage pin of the charger adaptation terminal 101 (i.e., the B4 pin and the A4 pin of the charger adaptation terminal 101, or the B9 pin and the A9 pin of the charger adaptation terminal 101), the voltage pin of the terminal adaptation terminal 103 (i.e., the B4 pin and the A4 pin of the terminal adaptation terminal 103, or the B9 pin and the A9 pin of the terminal adaptation terminal 103), the matching voltage pin of the terminal interface 201 (i.e., the B4 pin and the A4 pin of the terminal interface 201, or the B9 pin and the A9 pin of the terminal interface 201), the third terminal and the second terminal of the charge management chip 207, and the battery 206 may be included on the path through which the charging current between the charger and the controller passes. Thus, after the controller adjusts the charging power of the charger, the charging current after the charger adjustment may sequentially pass through the charger 300, the voltage pin of the charger adapting terminal, the voltage pin of the terminal adapting terminal, the matching voltage pin of the terminal interface, the third terminal and the second terminal of the charging management chip 207, and finally enter the battery 206, and charge the battery with the adjusted charging power.

Fig. 8 is a schematic flowchart of a method for controlling an interface conversion system according to an embodiment of the present application, referring to fig. 8, an embodiment of the present application may provide a method for controlling an interface conversion system shown in fig. 6, an execution subject of the control method provided by the embodiment of the present application may be the above-mentioned terminal 200, and the control method for an interface conversion system provided by the embodiment of the present application may include:

step 810: in response to the charger adaptation end being connected with the charger, the earphone adaptation end being connected with the earphone and the terminal adaptation end being connected with the terminal, the processor sends a first conduction signal to a third end of the first switch assembly and sends a second conduction signal to a third end of the second switch assembly;

Step 820: in response to the first and second switch assemblies being turned on, the controller is in communication with the charger; wherein a first path formed by the controller and the first switch assembly is used for receiving communication signals; the second path formed by the controller and the second switch assembly is used for transmitting communication signals.

In step 810, referring to the interface conversion system shown in fig. 6, in response to the charger adapter 101 being connected to the charger 300, the earphone adapter 102 being connected to the earphone 400, and the terminal adapter 103 being connected to the terminal 200, the processor 205 sends a first on signal to the third terminal G1 of the first switch assembly 2041 and a second on signal to the third terminal G2 of the second switch assembly 2042, so that the first switch assembly 2041 and the second switch assembly can be turned on.

In step 820, referring to the interface conversion system shown in fig. 6, in response to the first and second switch assemblies being turned on, a first path through which a transmission signal TXD between the charger and the controller passes may include a first data pin d1+, a first communication pin TX1+, a third communication pin TX2+, and the controller. The second path through which the received signal RXD between the charger and the controller passes may include a second data pin D1-, a second communication pin TX1-, a fourth communication pin TX2-, and the controller. In this way, the charger 300 is enabled to communicate with the controller 203, which adjusts the charging power of the charger, and increases the charging rate in case the terminal uses both the headset and the charger via the patch cord.

According to the method for controlling the interface conversion system provided by the embodiment of the application, the processor sends the first conduction signal to the third end of the first switch component and sends the second conduction signal to the third end of the second switch component by responding to the connection of the charger adaptation end and the charger, the connection of the earphone adaptation end and the earphone and the connection of the terminal adaptation end and the terminal; in response to the first and second switch assemblies being turned on, the controller is in communication with the charger; wherein a first path formed by the controller and the first switch assembly is used for receiving communication signals; the second path formed by the controller and the second switch assembly is used for transmitting communication signals. Therefore, under the condition that the terminal uses the earphone and the charger through the patch cord, the controller communicates with the charger by conducting the first switch assembly and the second switch assembly, and therefore, the controller can adjust the charging power of the charger and improve the charging rate.

It should be noted that, the method for controlling the interface conversion system provided in fig. 8 may also be used in the interface conversion system formed by fig. 7 (a) and fig. 7 (b), or may also be used in the interface conversion system formed by fig. 7 (b) and fig. 7 (c), which are not described herein.

In a specific embodiment, in step 810, the charger adaptation side is specifically determined to be connected to the charger, the earphone adaptation side is connected to the earphone, and the terminal adaptation side is connected to the terminal by:

responding to the first matching detection pin to output a high level to the processor, and determining that the charger adaptation end is connected with a charger;

And responding to the second matching detection pin to output a low level to the processor, and determining that the earphone adaptation end is connected with the earphone.

Referring to the interface conversion system shown in fig. 6, if the first matching detection pin CC1' outputs a high level to the processor 205, it is indicated that the first detection pin CC1 of the terminal adapting terminal 103 is high, and the voltage pin VBUS of the charger adapting terminal 101 is high, that is, it is indicated that the charger adapting terminal 101 is connected to the charger 300 and the terminal adapting terminal is connected to the terminal.

Referring to the interface conversion system shown in fig. 6, if the second matching detection pin CC2' outputs a low level to the processor 205, it is indicated that the second detection pin CC2 of the terminal adaptation terminal 103 is low, and the detection pin CC of the earphone adaptation terminal 102 is low, it is indicated that the earphone adaptation terminal 102 is connected to the earphone 400 and the terminal adaptation terminal is connected to the terminal.

And, compared with the related art, the improvement of the interface conversion system provided by the application on hardware can comprise adding a first switch component and a second switch component in the terminal 200, and the working energy consumption of the first switch component and the second switch component is lower.

According to the method for controlling the interface conversion system provided by the embodiment of the application, the charger adaptation end is determined to be connected with the charger and the terminal adaptation end is determined to be connected with the terminal by responding to the first matching detection pin to output high level to the processor; and responding to the second matching detection pin to output a low level to the processor, and determining that the earphone adaptation end is connected with the earphone and the terminal adaptation end is connected with the terminal. Thus, under the condition that the first matching detection pin outputs a high level to the processor and the second matching detection pin outputs a low level to the processor, the charger adaptation end is determined to be connected with the charger, the earphone adaptation end is connected with the earphone, and the terminal adaptation end is determined to be connected with the terminal. The first and second switch assemblies may be turned on at this time so that the controller communicates with the charger.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the application, the scope of which is defined by the claims and their equivalents.