CN221352072U - Signal switching device and electronic equipment - Google Patents
Signal switching device and electronic equipment Download PDFInfo
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- CN221352072U CN221352072U CN202322769445.3U CN202322769445U CN221352072U CN 221352072 U CN221352072 U CN 221352072U CN 202322769445 U CN202322769445 U CN 202322769445U CN 221352072 U CN221352072 U CN 221352072U
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Abstract
The utility model provides a signal switching device and electronic equipment, wherein the signal switching device comprises a signal switching switch, and the signal switching switch comprises: a first input terminal for receiving a USB signal; a second input terminal for receiving a DP signal; a third input terminal for receiving a switching signal for controlling the signal switching switch; and a signal output terminal for outputting a signal transmitted from the first input terminal or the second input terminal; the signal switching switch is configured to selectively turn on the first input terminal and the signal output terminal or to selectively turn on the second input terminal and the signal output terminal according to the switching signal. The utility model has the characteristics of space saving, low cost and reliability.
Description
Technical Field
The present utility model relates to the field of electronic devices, and in particular, to a signal switching device and an electronic device.
Background
At present, in some electronic devices such as notebook computers and desktop computers, communication with an external device or transmission of a display signal are required, and in this case, a universal serial bus port (USB interface) and a display communication port (DP interface) are required to be simultaneously provided to realize USB data communication or display signal output, so as to realize respective transmission of the USB signal and the DP signal. The scheme can realize the separate transmission communication of two types of signals between electronic equipment, but can cause larger board end space occupied by two interfaces and waste of ports, and if the scheme of sharing the interfaces can be provided, the waste of equipment space can be reduced, meanwhile, the board end space can be saved, and the equipment cost is reduced.
Disclosure of utility model
The disclosure provides a signal switching device and electronic equipment, which realize the respective transmission of USB signals and DP signals through a shared communication port, and have the effects of reducing equipment space, saving board end space and reducing equipment cost.
According to an aspect of the present disclosure, there is provided a signal switching apparatus including: a signal transfer switch, the signal transfer switch comprising:
a first input terminal for receiving a USB signal;
a second input terminal for receiving a DP signal;
A third input terminal for receiving a switching signal for controlling the signal switching switch; and
A signal output terminal for outputting a signal transmitted from the first input terminal or the second input terminal;
The signal switching switch is configured to selectively turn on the first input terminal and the signal output terminal or to selectively turn on the second input terminal and the signal output terminal according to the switching signal.
In some embodiments, the signal switching switch is configured to selectively turn on the first input terminal and the signal output terminal if the switching signal is at a first level, and to selectively turn on the second input terminal and the signal output terminal if the switching signal is at a second level.
In some embodiments, the first input terminal includes 6 NC pins; and/or the second input terminal comprises 6 NO pins; and/or
The third input terminal comprises two input pins; and/or
The signal output terminal includes 6 COM pins.
In some embodiments, the signal switching apparatus further comprises:
And a switching signal receiving component connected with the third input terminal and used for transmitting the received switching signal to the signal switching switch through the third input terminal connection.
In some embodiments, the signal switching apparatus further comprises: a hot plug processing component and a USB interface;
the USB interface is connected with the signal output terminal and transmits a USB signal or a DP signal transmitted from the signal output terminal to the connected external electronic device;
The hot plug processing component is connected with the high-frequency signal ground wire loop pin of the USB interface and is configured to transmit a low signal to the high-frequency signal ground wire loop pin when the switching signal is at a first level and transmit a hot plug signal to the high-frequency signal ground wire loop pin when the switching signal is at a second level.
In some embodiments, the first terminal of the hot plug processing component is configured to receive a hot plug signal, the second terminal is connected to a voltage signal, the third terminal is grounded, the fourth terminal is connected to a high frequency signal ground return pin of the USB interface, and the fifth terminal receives the switching signal;
A diode is connected between the first terminal and the fourth terminal;
A triode is connected between the fifth terminal and the fourth terminal, the grid electrode of the triode is connected with the fifth terminal, the drain electrode of the triode is connected with the fourth terminal, and the source electrode of the triode is grounded;
a resistor is connected between the second terminal and the fourth terminal.
In some embodiments, a fifth terminal of the hot plug processing component is connected to the third input terminal or the switching signal receiving component for receiving the switching signal.
In some embodiments, the USB interface is model LOTES _AUSB0205-P009A11.
In some embodiments, the signal switch is a USB switch, model PI3USB322124.
According to an aspect of the present disclosure, there is provided an electronic device, a connector of which includes the signal switching apparatus as set forth in any one of the above embodiments.
The signal switching device and the electronic equipment provided by the disclosure can identify the switching signal received by the third input terminal, automatically select and output the USB signal received by the first input terminal or the DP signal received by the second input terminal according to the switching signal, realize multiplexing of the functions of the DP interface and the USB interface, reduce the waste of equipment space caused by simultaneously setting two types of interfaces, save the space of a board end and reduce the equipment cost.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Other features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of a signal switching apparatus according to an embodiment of the present disclosure;
Fig. 2 is a schematic circuit configuration diagram of a signal switching apparatus according to an embodiment of the present disclosure;
FIG. 3 is a schematic circuit diagram of a hot plug processing assembly according to an embodiment of the present disclosure;
fig. 4 is a schematic circuit configuration diagram of a USB interface according to an embodiment of the present disclosure.
Detailed Description
Various exemplary embodiments, features and aspects of the disclosure will be described in detail below with reference to the drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the term "at least one" herein means any one of a plurality or any combination of at least two of a plurality, for example, including at least one of A, B, C, may mean including any one or more elements selected from the group consisting of A, B and C.
Furthermore, numerous specific details are set forth in the following detailed description in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements, and circuits well known to those skilled in the art have not been described in detail in order not to obscure the present disclosure.
Fig. 1 is a schematic diagram of a signal switching apparatus according to an embodiment of the present disclosure, and fig. 2 is a schematic circuit configuration diagram of the signal switching apparatus according to an embodiment of the present disclosure. As shown in fig. 1 and 2, the signal switching device includes a signal switching switch 100, which includes: a first input terminal 101, a second input terminal 102, a third input terminal 103, and a signal output terminal 104. Wherein the first input terminal 101 is configured to receive a USB signal; the second input terminal 102 is used for receiving a DP signal, and the third input terminal 103 is used for receiving a switching signal for controlling the signal switching switch; and a signal output terminal 104 for outputting a signal transmitted from the first input terminal or the second input terminal. And, the signal switching switch 100 is configured to selectively turn on the first input terminal and the signal output terminal or to selectively turn on the second input terminal and the signal output terminal according to the switching signal.
In some possible embodiments, the signal change-over switch 100 is configured to selectively switch on the electrical connection between the first input terminal 101 and the signal output terminal 104 and to switch off the electrical connection between the second input terminal 102 and the signal output terminal 104, and to output the USB signal received by the first input terminal 101 through the signal output terminal 104, in the case that the change-over signal is at the first level; and when the switching signal is at the second level, selectively turning on the electrical connection between the second input terminal 102 and the signal output terminal 104, and turning off the electrical connection between the first input terminal 101 and the signal output terminal 104, and outputting the DP signal received by the second input terminal 102 through the signal output terminal 104. Wherein the first signal is high and the second signal is low, e.g. 1 and 0, respectively. The foregoing is merely exemplary of embodiments of the present disclosure and is not intended to be a specific definition of the limits of the present disclosure.
As shown in fig. 2, the signal switch may be a USB switch, and the type may be PI3USB322124, which is not specifically limited in this disclosure, and other types of switches may also be used as embodiments of the disclosure. The first input terminal 101 of the signal switching switch may include 6 NC pins (normally closed pins NC1 to NC 6), and is not energized to be in a normally closed state; and/or the second input terminal 102 may include 6 NO pins (normally open pins NO1-NO 6), which are not energized in a normally open state; the third input terminal comprises two input pins (IN pins IN1-IN 2); and/or the signal output terminal comprises 6 COM pins (serial communication interfaces COM1-COM 6), and an expansion interface adopting a serial communication mode is adopted.
Specifically, in the embodiments of the present disclosure, in NC1-NC6 of first input terminal 101, the 23 rd pin receives u3_tx_p, the 22 nd pin receives u3_tx_n, the 20 th pin receives u2_p, the 18 th pin receives u2_n, the 19 th pin receives u3_rx_n, and the 16 th pin receives u3_rx_p. In NO1-NO6 of the second input terminal 102, the 8 th pin receives dp_d0_p, the 10 th pin receives dp_d0_n, the 12 th pin receives dp_d1_p, the 14 th pin receives dp_d1_n, the 15 th pin receives dp_aux_p, and the 13 th pin receives dp_aux_n. The third input terminal 103 may include a 21 st pin IN1 and an 11 th pin IN2 of the signal switching switch. In COM1-COM6 of the signal output terminal 104, pin 1 outputs u3_tx_p1_dp0_p, pin 3 outputs u3_tx_n1_dp0_p, pin 4 outputs u2_p_ DPAUX _p, pin 6 outputs u2_n_ DPAUX _n, pin 7 outputs u3_tx_p1_dp1_p, and pin 9 outputs u3_tx_n1_dp1_p. The above-mentioned input signals and output signals can be defined by those skilled in the art according to the specific use cases of the switch, and are not specific limitations of the present disclosure.
In the embodiment of the disclosure, USB3.0 and USB2.0 come from a main control with 6 signal ports, DP signals with 2lanes data channels, a pair of DP AUX data link with 6 signal ports. In addition, one path of hot plug HPD signal required by the DP is subjected to functions through another path. The USB_DP_SEL is actively controlled to output by a main control chip such as a CPU/MCU/EC and the like, and the selected protocol signal output is controlled by selecting high and low signals to output. In the embodiment of the disclosure, U1 is a selection output chip of USB3.0 and DP signals, NC 1-6 is a USB3.0 signal output by a main control, NO 1-6 is a DP 2Lane signal output by the main control, and a required protocol signal USB3.0 or DP signal is output through COM 1-6 after selection. IN1 and IN2 of the U1 chip are selection control pins, and the control signals are high/low to select USB signals of NC1 to NC 6 or DP signals of NO1 to NO 6 to be output from COM1 to COM 6. The EN enable PIN of the U1 signal selects a normal on working mode, and the VDD/GND Pin is connected with a normal power supply and ground.
In addition, in the embodiment of the present disclosure, the signal switching apparatus may further include: and a switching signal receiving unit 200 connected to the third input terminal 103 and configured to transmit the received switching signal to the signal switching switch through the third input terminal connection. Then, the signal switching switch outputs a DP signal or a USB signal according to the switching signal. In some embodiments, the switching signal receiving element 200 may be a keyboard, a display screen, a touch pad, or other electronic devices capable of communicating signals. In some embodiments, the switching signal received by the switching signal receiving component may also be received by a controller such as a CPU, MCU, etc. of the electronic device, and the switching signal is transmitted to the signal switching switch, which is not specifically limited in this disclosure. The signal switching component can receive switching signals input or transmitted by a user, and transmits the switching signals to the signal switching switch to respond, so that autonomous control of output signals can be realized, and the stability is high. And when the user input is that the external connection electronic device is a display device, a switching signal of a second level is sent.
In addition, in other embodiments of the present disclosure, the signal switching apparatus further includes: a hot plug processing component 300 and a USB interface 400. Wherein the USB interface 400 is connected to the signal output terminal 104, and transmits a USB signal or a DP signal transmitted from the signal output terminal 104 to a connected external electronic device. In the embodiment of the present disclosure, the USB interface 400 may be connected to an external electronic device, such as a USB device or a display device. The USB signal or the DP signal may be transmitted to the connected external electronic device through the USB interface 400, thereby realizing data communication or display of video information between the two electronic devices. The USB interface can be any one or more of TYPE-C, TYPE-A and USB-A.
Additionally, in embodiments of the present disclosure, the hot plug processing component 300 may be configured to maintain a USB function or a hot plug function of the USB interface according to the type of the switching signal. The hot plug assembly 300 may be connected to a high frequency signal ground return pin of the USB interface 400, and configured to transmit a low signal to the high frequency signal ground return pin when the switching signal is at a first level, to maintain a USB interface function, and transmit a hot plug signal (HPD) to the high frequency signal ground return pin when the switching signal is at a second level, to implement a hot plug function of the USB interface.
Specifically, fig. 3 is a schematic circuit diagram of a hot plug processing component according to an embodiment of the disclosure, and fig. 4 is a schematic circuit diagram of a USB interface implemented according to the disclosure. As shown in fig. 3 and 4, the first terminal dp_hpd of the hot plug processing assembly 300 is configured to receive a hot plug signal, and the second terminal power_1 is configured to be connected to a voltage signal, such as a voltage signal less than 5.5 v; the third terminal is grounded, the fourth terminal U_GND_DRAIN_HPD is connected with the high-frequency signal ground line loop pin GND_DRAIN of the USB interface, and the fifth terminal receives the switching signal USB_DP_SEL. And a diode D1 is connected between the first terminal and the fourth terminal, wherein the cathode of the diode is connected with the first terminal, and the anode of the diode is connected with the fourth terminal. And a triode is connected between the fifth terminal and the fourth terminal, the grid electrode of the triode is connected with the fifth terminal, the drain electrode of the triode is connected with the fourth terminal, and the source electrode of the triode is grounded. In addition, a resistor is connected between the second terminal and the fourth terminal.
Through the above embodiment, when the switching signal usb_dp_sel is the first level (high level signal), the USB3.0 mode can be selectively output, and the usb_dp_sel control transistor Q1 is connected to the ground GND, and the fourth terminal u_gnd_drain_dp_hpd is grounded, which meets the standard of the standard USB3.0 connector, and maintains the function of the USB interface. The output DP mode is selected when the switching signal usb_dp_sel is at the second level (low level signal), and the usb_dp_sel control transistor Q1 is not turned on, and the fourth terminal u_gnd_drain_dp_hpd signal is a dp_hpd signal, which belongs to a DP hot plug function. In this embodiment of the disclosure, the fifth terminal of the hot plug processing component receives the switching signal by being connected to the third input terminal or the switching signal receiving component.
In addition, as shown in fig. 4, the 1 st pin VBUS of the USB interface 400 is connected to a power source, the 9 th pin SSTX + of the USB interface 400 is connected to the 1 st pin of the signal output terminal 104, the 8 th pin SSTX-of the USB interface 400 is connected to the 3 rd pin of the signal output terminal 104, the 3 rd pin d+ of the USB interface 400 is connected to the 4 th pin of the signal output terminal 104, the 7 th pin gnd_draw of the USB interface 400 is connected to the fourth terminal u_gnd_draw_dp_hpd of the hot-plug processing unit, the 2 nd pin D-of the USB interface 400 is connected to the 6 th pin of the signal output terminal 104, the 6 th pin SSRX + of the USB interface 400 is connected to the 7 th pin of the signal output terminal 104, the 4 th pin GND-of the USB interface 400 is grounded, and the 5 th pin SSRX-of the USB interface 400 is connected to the 9 th pin of the signal output terminal 104. Through the connection, the signal output terminal can send corresponding output signals to the USB. The USB interface in the embodiment of the present disclosure is model LOTES _AUSB0205-P009A11.
In the embodiment of the disclosure, the USB interface J1 is ase:Sub>A normal standard USB3.x Type-ase:Sub>A connector, and all signals of the USB3.0 are normally wired according to Pin definitions of the standard USB-ase:Sub>A interface. According to the multiplexing relation of the output signals of the U1 chips COM 1-6 Pin, the DP signal connectors are synchronously connected. The PIN 7GND_GRAIN of the J1 connector can be used as the HPD function of USB3.0 GND or DP through the high or low state selected by the USB_DP_SEL; j1 The change in the properties of PIN7 belongs to a design definition change on the PCB without any special design of the connector.
Based on the embodiment, the embodiment of the disclosure realizes that USB signals and DP signals of two different protocols use the same connector, has few used parts and low production cost, and saves a large amount of connector space; meanwhile, the working effectiveness and stability are reliable, the conventional device is used for constructing the circuit, and the logic is simple; because the embodiment of the disclosure can actively control the output signal by ase:Sub>A user, false triggering and error reporting are prevented, and an alternative scheme of coexistence of the USB-A port and the DP port is newly added.
In addition, the present disclosure also provides an electronic device that may be provided as a terminal, server, or other modality device. For example, the electronic device may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, or the like. The connector of the electronic equipment comprises the signal switching device, so that the connector can transmit USB signals and DP signals of two different protocols, the use of parts is few, the production cost is low, and a large amount of connector space is saved; meanwhile, the working effectiveness and stability are reliable, the conventional device is used for constructing the circuit, and the logic is simple; because the embodiment of the disclosure can actively control the output signal by ase:Sub>A user, false triggering and error reporting are prevented, and an alternative scheme of coexistence of the USB-A port and the DP port is newly added.
Claims (10)
1. A signal switching apparatus, comprising: a signal transfer switch, the signal transfer switch comprising:
a first input terminal for receiving a USB signal;
a second input terminal for receiving a DP signal;
A third input terminal for receiving a switching signal for controlling the signal switching switch; and
A signal output terminal for outputting a signal transmitted from the first input terminal or the second input terminal;
The signal switching switch is configured to selectively turn on the first input terminal and the signal output terminal or to selectively turn on the second input terminal and the signal output terminal according to the switching signal.
2. The signal switching apparatus according to claim 1, wherein the signal switching switch is configured to selectively turn on the first input terminal and the signal output terminal in a case where the switching signal is of a first level, and to selectively turn on the second input terminal and the signal output terminal in a case where the switching signal is of a second level.
3. The signal switching apparatus according to claim 1 or 2, wherein the first input terminal includes 6 NC pins; and/or
The second input terminal comprises 6 NO pins; and/or
The third input terminal comprises two input pins; and/or
The signal output terminal includes 6 COM pins.
4. The signal switching apparatus of claim 1 wherein said signal switching apparatus further comprises:
And a switching signal receiving component connected with the third input terminal and used for transmitting the received switching signal to the signal switching switch through the third input terminal connection.
5. The signal switching apparatus according to any one of claims 1 to 4, further comprising: a hot plug processing component and a USB interface;
the USB interface is connected with the signal output terminal and transmits a USB signal or a DP signal transmitted from the signal output terminal to the connected external electronic device;
The hot plug processing component is connected with the high-frequency signal ground wire loop pin of the USB interface and is configured to transmit a low signal to the high-frequency signal ground wire loop pin when the switching signal is at a first level and transmit a hot plug signal to the high-frequency signal ground wire loop pin when the switching signal is at a second level.
6. The signal switching apparatus according to claim 5, wherein the first terminal of the hot plug processing assembly is configured to receive a hot plug signal, the second terminal is connected to a voltage signal, the third terminal is grounded, the fourth terminal is connected to a high frequency signal ground return pin of the USB interface, and the fifth terminal receives the switching signal;
A diode is connected between the first terminal and the fourth terminal;
A triode is connected between the fifth terminal and the fourth terminal, the grid electrode of the triode is connected with the fifth terminal, the drain electrode of the triode is connected with the fourth terminal, and the source electrode of the triode is grounded;
a resistor is connected between the second terminal and the fourth terminal.
7. The signal switching apparatus according to claim 5 or 6, wherein a fifth terminal of the hot plug processing assembly is connected to the third input terminal or the switching signal receiving assembly for receiving the switching signal.
8. The signal switching apparatus according to claim 5 or 6, wherein the USB interface is model LOTES _ausb0205-P009a11.
9. The signal switching apparatus according to any one of claims 1-8, wherein the signal switching switch is a USB switch, and the type is PI3USB322124.
10. An electronic device, characterized in that the connector of the electronic device comprises a signal switching device according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322769445.3U CN221352072U (en) | 2023-10-16 | 2023-10-16 | Signal switching device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322769445.3U CN221352072U (en) | 2023-10-16 | 2023-10-16 | Signal switching device and electronic equipment |
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| Publication Number | Publication Date |
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| CN221352072U true CN221352072U (en) | 2024-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202322769445.3U Active CN221352072U (en) | 2023-10-16 | 2023-10-16 | Signal switching device and electronic equipment |
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| CN (1) | CN221352072U (en) |
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- 2023-10-16 CN CN202322769445.3U patent/CN221352072U/en active Active
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