Network switches

Abstract

A network switch utilizes LED combinations to display status signals for multiple network connection interfaces. The network switch comprises a signal management unit, a control unit, multiple switch elements, and multiple LEDs. The signal management unit receives status signals from the multiple network connection interfaces and transmits the data to the control unit, which controls each of the switch elements and, in turn, controls each of the LEDs accordingly. The status signals include: first status data output by a first control signal indicating active and inactive states; second and third status data output by a second control signal indicating established and disconnected connections, as well as connection speed. The LEDs change to display the status of different network connection interfaces in response to the combination of each of the first and second control signals.

Description

Technical Field

[0001] The present invention relates to a network switch, and in particular to a network switch which uses LEDs to display the status of a network connection interface. Background Art

[0002] A conventional network switch has multiple network connection interfaces, a physical layer chip (PHY chip), and multiple LEDs. The network connection interfaces are used for network cable connection. The physical layer chip connects to the network connection interfaces to obtain the status of each network connection interface and controls a corresponding LED based on the status of each network connection interface. Due to the functional limitations of the physical layer chip, it is often possible to only realize a combination display of partial status. For example, the physical layer chip has only one control pin to control an LED for each network connection interface. Therefore, only partial status of the network connection interface can be displayed, such as a constant LED to indicate the connection status (Link up) and a flashing LED to indicate the action status (Active). A third status, such as the connection speed, cannot be displayed.

[0003] Therefore, the design of existing network switches is still not perfect and needs to be improved. Summary of the Invention

[0004] In view of this, an object of the present invention is to provide a network switch that can utilize a plurality of LED combinations to display the status of a network connection interface.

[0005] In order to achieve the above object, the present invention provides a network switch comprising

[0006] A plurality of network connection interfaces, each of which is used for connection with a network cable; the network switch further comprises a plurality of display modules, each of which comprises a plurality of LEDs, each of which has a first pole and a second pole; a plurality of control circuit modules, each of which comprises a plurality of switch elements, each of which has a first end, a second end and a control end, the control end being controllable to connect or cut off the first end and the second end; each first end is electrically connected to each second pole; each second end is electrically connected to one end of a power supply; a signal management unit is electrically connected to the plurality of network connection interfaces, and receives a status signal from each of the plurality of network connection interfaces, the status signal comprising a first status data, a second status data and at least one third status data; the signal management unit has a plurality of control pins and a first connection interface, wherein each control pin is electrically connected to the first pole of the plurality of LEDs of each display module; the signal management unit is configured to control the first pole of the plurality of LEDs according to the connected The first status data of each status signal received is outputted as a corresponding first control signal from a corresponding control pin; in addition, the signal management unit outputs the second status data and the third status data of each status signal received from the first connection interface; a control unit has a second connection interface and a control interface, the second connection interface is electrically connected to the first connection interface of the signal management unit, the control interface has a plurality of pin groups, each pin group has a plurality of pins, and the plurality of pins are respectively electrically connected to the control end of the switch element of each control circuit module; the control unit receives each second status data and each third status data through the second connection interface, and outputs a corresponding second control signal from each pin group of the control port to the corresponding switch element of the control circuit module according to each second status data and each third status data, so that the plurality of LEDs of each display module change the display mode corresponding to the combination of each first control signal and each second control signal.

[0007] The effect of the present invention is that the signal management unit and the control unit can jointly control the display of each LED, so that one control pin can be connected to multiple LEDs to display multiple states of the network connection interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 FIG. 1 is a block diagram of a network switch according to a first preferred embodiment of the present invention.

[0009] Figure 2 This is a partial circuit diagram of a network switch according to a first preferred embodiment of the present invention.

[0010] Figure 3 This is a control timing diagram of the network switch according to the first preferred embodiment of the present invention.

[0011] Figure 4 This is a partial circuit diagram of a network switch according to a third preferred embodiment of the present invention.

[0012] Figure 5 This is a partial circuit diagram of a network switch according to a fourth preferred embodiment of the present invention.

[0013] Figure 6 This is a partial circuit diagram of a network switch according to a fifth preferred embodiment of the present invention.

[0014] Figure 7 FIG. 1 is a block diagram of a network switch according to a sixth preferred embodiment of the present invention.

[0015] Figure 8 FIG. 1 is a block diagram of a network switch according to a seventh preferred embodiment of the present invention. DETAILED DESCRIPTION

[0016] In order to explain the present invention more clearly, preferred embodiments are given and described in detail with reference to the accompanying drawings. Figure 1 and Figure 2 FIG. 1 shows a network switch 1 according to a first preferred embodiment of the present invention. The network switch 1 includes a plurality of network connection interfaces 10 , a plurality of display modules 50 , a plurality of control circuit modules 40 , a signal management unit 20 and a control unit 30 .

[0017] Each network connection interface 10 can be inserted with a network cable (not shown in the figure) and is connected to a device (not shown in the figure) through the network cable to receive a status signal from the device. Each network connection interface 10 can be, for example, an Ethernet connection interface or a fiber optic network connection interface. The status signal includes a first status data, a second status data and at least one third status data. In this embodiment, the first status data is an action state (Active) or a non-action state, the second status data is a connection establishment state (Link up) or a disconnection state (Link down), and the third status data is one of a plurality of connection speeds, the plurality of connection speeds including a first connection speed, a second connection speed and a third connection speed. In addition to being the third status data representing the connection speed, the third status data can also be the third status data representing the transmission state or the receiving state. The third status data does not exclude other states. The aforementioned first to third status data are merely examples and are not intended to limit the present invention.

[0018] Each display module 50 corresponds to a network connection interface 10 and is used to display the status of the corresponding network connection interface 10. Each of the multiple display modules 50 includes multiple LEDs 51. Each LED 51 has a first electrode and a second electrode. In this embodiment, the number of LEDs 51 is three, but this is not limited to two or four or more. The LEDs 51 have different colors. The first electrode of each LED 51 is a cathode, and the second electrode is an anode.

[0019] Each control circuit module 40 corresponds to a display module 50 and a network connection interface 10, and is used to control the LED 51 of the corresponding display module 50. Each of the multiple control circuit modules 40 includes multiple switching elements 41. Each switching element 41 has a first end, a second end, and a control end. The control end can be controlled to switch the first end and the second end on or off. The first end is electrically connected to the second terminal of each LED 51, and the second end is connected to a terminal of a power supply. In this embodiment, three switching elements 41 are MOSFETs, but this is not limited to this. The number of switching elements 41 can also be one or more. Each switching element 41 has a first end as a drain, a second end as a source, and a control end as a gate. The second end is connected to a positive terminal Vcc of the power supply. A current-limiting resistor (not shown) can also be optionally connected in series in each circuit path from the control pin to the positive terminal Vcc of the power supply.

[0020] In this embodiment, the signal management unit 20 includes a physical layer chip 22 (PHY chip). The PHY chip 22 is electrically connected to the multiple network connection interfaces 10 and receives the multiple status signals from the multiple network connection interfaces 10. The PHY chip 22 includes a first connection interface 222 and multiple control pins 224. The first connection interface 222 is electrically connected to the control unit 30 via a serial management interface (SMI bus) and communicates with the control unit 30. Each of the control pins 224 is electrically connected to the first electrode of each of the multiple LEDs 51 of the display module 50.

[0021] When the physical layer chip 222 receives the status signal from each of the network connection interfaces 10, it outputs a corresponding first control signal from the corresponding control pin 224 based on the received first status data. Furthermore, the first control signal output from each of the control pins 224 includes one of a first mode signal and a second mode signal. The first mode signal is either a high voltage or a low voltage. In this embodiment, since the control pin is connected to the cathode of the LED 51, the first mode signal is a low voltage. The second mode signal switches continuously between a high voltage and a low voltage.

[0022] The control unit 30 may be, for example, a central processing unit (CPU) having a second connection interface 32 and a control interface 34. The control interface 34 may be, for example, a general-purpose input / output (GPIO). In practice, the control unit 30 may also be comprised of a CPU and a GPIO expansion chip. The second connection interface 32 is electrically connected to the first connection interface 222 of the signal management unit 20 to receive the second status data and the third status data corresponding to each of the network connection interfaces 10. The control interface 34 has a plurality of pin groups 342, each pin group 342 corresponding to each control circuit module 40. Each pin group 342 has a plurality of pins 342a. In this embodiment, three pins 342a are used as an example, but the number is not limited to two or more. The plurality of pins 342a are respectively electrically connected to the control terminals of the plurality of switch elements 41 of each control circuit module 40. In other words, each pin 342a of the control interface 34 can control a switch element 41 to be turned on or off. The control unit 30 outputs a corresponding second control signal from a corresponding pin group 342 of the control port 34 based on the received second status data and third status data. The second control signal output by the pin group 342 includes one of a third mode signal and a fourth mode signal. The third mode signal is a low voltage level for one or more pins 342a of the pin group 342, thereby turning off the switch element 41 receiving the low voltage level. The fourth mode signal is a high voltage level for one or more pins 342a of the pin group 342, thereby turning on the switch element 41 receiving the high voltage level.

[0023] Reference Figure 3 As shown, an example is given to illustrate the control method of the LED 51 corresponding to one of the network connection interfaces 10. For ease of explanation, Figure 3In the figure, LEDs 1 to 3 represent the three LEDs 51, and pins 1 to 3 represent the three pins 342a of pin group 342. When the network connection interface 10 is disconnected, that is, the network cable is not yet connected to the device, the first control signal output by the signal management unit 20 is a first mode signal, which controls pin 224 to a low voltage (Lo). Furthermore, the signal management unit 20 outputs second status data indicating the disconnected state to the control unit 30. When the control unit 30 determines that the second status data indicates the disconnected state, the second control signal output from the corresponding pin group 342 is a third mode signal, which controls pins 1 to 3 to a low voltage (Lo), causing the corresponding switch elements 41 to be turned off. LEDs 1 to 3 are all off, indicating that the network connection interface 10 is disconnected. In practice, when the network connection interface 10 is disconnected, the signal management unit 20 may also set the control pin 224 to a high impedance state, and the signal management unit 20 may not output the second state data to the control unit 30. The control unit 30 sets the pin 342a of the pin group 342 to a high impedance state, so that the corresponding switch elements 41 are all cut off.

[0024] When the network connection interface 10 is in the state of establishing a connection, inactive, and at the first connection speed, the status signal received by the signal management unit 20 is: first status data indicates an inactive state; second status data indicates an established connection state; and third status data indicates the first connection speed. When the signal management unit 20 determines that the first status data is the inactive state, the first control signal output from the control pin 224 is a first mode signal, i.e., the control pin 224 is at a low voltage (Lo). The signal management unit 20 also outputs the second status data and the third status data to the control unit 30. When the control unit 30 determines that the second status data indicates an established connection state and the third status data indicates the first connection speed, the second control signal output from the pin set 342 of the control unit 30 is a fourth mode signal, thereby turning on the corresponding one or more switching elements 41. In this embodiment, LED 1 is illuminated (on) to correspond to the first connection speed, LED 2 is illuminated (on) to correspond to the second connection speed, and LED 3 is illuminated (on) to correspond to the third connection speed. Therefore, the fourth mode signal is when pin 1 is high (Hi), turning on the corresponding switch element 41, and when pins 2 and 3 are both low (Lo), turning off the corresponding switch element 41. When LED 1 is illuminated (on), and LEDs 2 and 3 are off (off), it indicates that the network connection interface is established, inactive, and at the first connection speed.

[0025] When the network connection interface 10 is in the state of establishing a connection, operating, and connecting at the first connection speed, the status signals received by the signal management unit 20 are: first status data indicating an operating state, second status data indicating an established connection state, and third status data indicating the first connection speed. When the signal management unit 20 determines that the first status data is the operating state, the first control signal output from the control pin 224 is a second mode signal, i.e., the control pin 224 continuously switches between a high voltage (Hi) and a low voltage (Lo). The signal management unit 20 then outputs the second and third status data to the control unit 30. When the control unit 30 determines that the second status data indicates an established connection state and the third status data indicates the first connection speed, the second control signal output from the pin set 342 of the control unit 30 is a fourth mode signal, turning on the corresponding one or more switch elements 41. In this embodiment, the fourth mode signal is when pin 1 is high (Hi), turning on the corresponding switch element 41, and when pins 2 and 3 are both low (Lo), turning off the corresponding switch element 41. The LED 1 flashes, and the LED 2 and LED 3 are off, to indicate that the network connection interface 10 is connected, operational, and at the first connection speed.

[0026] Table 1 below summarizes various status data of a network connection interface 10 of this embodiment, the first control signal of the control pin 224 , the second control signal of the pin group 342 , and the display status of each LED 51 .

[0027] Table 1

[0028] First state data Second state data Third state data Control pin Pin 1 Pin 2 Pin 3 LED 1 LED 2 LED 3 none Disconnected state none Lo Lo Lo Lo off off off Non-action state Connection establishment status First connection speed Lo Hi Lo Lo on off off Non-action state Connection establishment status Second connection speed Lo Lo Hi Lo off on off Non-action state Connection establishment status Third connection speed Lo Lo Lo Hi off off on Action Status Connection establishment status First connection speed Hi / Lo Hi Lo Lo Flash off off Action Status Connection establishment status Second connection speed Hi / Lo Lo Hi Lo off Flash off Action Status Connection establishment status Third connection speed Hi / Lo Lo Lo Hi off off Flash

[0029] (Lo: low potential, Hi: high potential, Hi / Lo: continuous switching between low potential and high potential; on: bright, off: off)

[0030] In this way, the display mode of the LED 51 of the display module 50 can be changed by the combination of the first control signal and the second control signal corresponding to each network connection interface 10 .

[0031] Furthermore, the control unit 30 may also simultaneously output a low voltage from two or more pins 342a of the pin group 342 in response to the third state data to form a third mode signal, thereby turning off the two or more switch elements 41, or output a high voltage from two or more pins 342a of the pin group 342 to form a fourth mode signal, thereby turning on the two or more switch elements 41. For example, referring to Table 2 below, when the control unit 30 determines that the second state data indicates a connection establishment state and the third state data indicates a fourth connection speed, the control unit 30 outputs a high voltage from pins 1 and 2 of the pin group 342. This causes LEDs 1 and 2 to light up or flash simultaneously. The two colors of light emitted by LEDs 1 and 2 are mixed to form another color, indicating that the current connection speed of the network connection interface 10 is the fourth connection speed.

[0032] Table 2

[0033] First state data Second state data Third state data Control pin Pin 1 Pin 2 Pin 3 LED 1 LED 2 LED 3 Non-action state Connection establishment status Fourth connection speed Lo Hi Hi Lo on on off Action Status Connection establishment status Fourth connection speed Lo Hi Hi Lo Flash Flash off

[0034] (Lo: low potential, Hi: high potential, Lo / Hi: continuous switching between low potential and high potential; on: bright, off: off)

[0035] In a second preferred embodiment of the present invention, the network connection interface 10 status signal may further include fourth status data, which represents either a transmitting state or a receiving state. The signal management unit 20 further transmits the fourth status data to the control unit 30, which then outputs a second control signal based on the second to fourth status data. For example, Table 3 shows various status data of a network connection interface 10 according to the second preferred embodiment of the present invention, along with the first control signal of the control pin 224, the second control signal of the pin group 342, and the display status of each LED 51. At least one LED 51 (using LED 3 as an example) can be illuminated (on) to indicate a transmitting state, while being off (off) indicates a receiving state. The combination of LED 1 and LED 2 represents the first to third connection speeds.

[0036] Table 3

[0037]

[0038]

[0039] (Lo: low potential, Hi: high potential, Hi / Lo: continuous switching between low potential and high potential; on: bright, off: off)

[0040] In this way, the display mode of the LED 51 of the display module 50 can also be changed by the combination of the first control signal and the second control signal corresponding to each network connection interface 10 .

[0041] Figure 4 The third preferred embodiment of a network switch 3 is shown. It has a structure substantially similar to the first embodiment, except that the first terminal of each LED 51 serves as an anode and the second terminal as a cathode, while the first terminal of each switch element 41 serves as a source and the second terminal as a drain. The second terminal of each switch element 41 is connected to a power source, which is ground GND. When the first state data of the physical layer chip 22 of the signal management unit 20 is in the inactive state, the first mode signal of the first control signal on the control pin 224 is high.

[0042] Table 4 below summarizes various status data of a network connection interface 10 of this embodiment, the first control signal of the control pin 224 , the second control signal of the pin group 342 , and the display status of each LED 51 .

[0043] Table 4

[0044] First state data Second state data Third state data Control pin Pin 1 Pin 2 Pin 3 LED 1 LED 2 LED 3 none Disconnected state none Lo Lo Lo Lo off off off Non-action state Connection establishment status First connection speed Hi Hi Lo Lo on off off Non-action state Connection establishment status Second connection speed Hi Lo Hi Lo off on off Non-action state Connection establishment status Third connection speed Hi Lo Lo Hi off off on Action Status Connection establishment status First connection speed Hi / Lo Hi Lo Lo Flash off off Action Status Connection establishment status Second connection speed Hi / Lo Lo Hi Lo off Flash off Action Status Connection establishment status Third connection speed Hi / Lo Lo Lo Hi off off Flash

[0045] (Lo: low potential, Hi: high potential, Hi / Lo: continuous switching between low potential and high potential; on: bright, off: off)

[0046] The circuit structure of this embodiment can also be applied to the second embodiment.

[0047] Figure 5 The fourth preferred embodiment of the network switch 4 of the present invention is shown. Based on the first preferred embodiment, it further includes a plurality of inverters 60. Each inverter 60 is electrically connected to each control pin 224 of the physical layer chip 22 of the signal management unit 20 and the first terminal of each LED 51 of the display module 50. The inverter 60 is used to convert a high voltage i to a low voltage or a low voltage to a high voltage. Therefore, in this embodiment, when the first state data of the physical layer chip 22 of the signal management unit 20 is an inactive state, the first mode signal of the first control signal of the control pin 224 is a high voltage. When the network connection interface 10 is disconnected, the control pin 224 can be in a high impedance state or a high voltage.

[0048] The circuit structure of this embodiment can also be applied to the second embodiment.

[0049] Figure 6The fifth preferred embodiment of the network switch 5 of the present invention is shown. Based on the third preferred embodiment, the switch includes a plurality of inverters 60, each of which electrically connects the control pins 224 of the signal management unit 20 to the first terminal of the LED 51 of the display module 50. When the physical layer chip 22 of the signal management unit 20 indicates a first state of inactivity, the first mode signal of the first control signal on the control pin 224 is at a low voltage. When the network connection interface 10 is disconnected, the control pin 224 can be in a high impedance state or at a high voltage.

[0050] The circuit structure of this embodiment can also be applied to the second embodiment.

[0051] Figure 7 A network switch 6 according to a sixth preferred embodiment is shown. It has a substantially similar architecture to the first preferred embodiment, except that the signal management unit 20 includes a physical layer chip 22 and a media access control (MAC) chip 24 electrically connected to each other. The physical layer chip 22 is electrically connected to the plurality of network connection interfaces 10 to receive status signals. Based on the received first status data, the physical layer chip 22 outputs corresponding first control signals from corresponding control pins 224 and transmits second status data and third status data to the MAC chip 24. The MAC chip 24 has a first connection interface 242 electrically connected to a control unit 30. The MAC chip 24 transmits the second status data and third status data to the control unit 30.

[0052] Figure 8 The network switch 7 of the seventh preferred embodiment has a structure substantially the same as that of the sixth preferred embodiment, except that the network media layer chip 24 has a plurality of control pins 244, and the plurality of control pins 244 are electrically connected to the first poles of the plurality of LEDs 51 of each of the display modules 50; the physical layer chip 22 transmits the received first status data, second status data, and third status data to the network media layer chip 24, and the network media layer chip 24 outputs the corresponding first control signal from the corresponding plurality of control pins 244, and the first connection interface 242 transmits the second status data and the third status data to the control unit 30.

[0053] The structures of the sixth and seventh embodiments can also be applied to the second to fifth embodiments.

[0054] As described above, the network switch of the present invention generates a first control signal and a second control signal corresponding to the status signal of each network connection interface 10. The combination of the first control signal and the second control signal changes the display mode of the LED 51 of the display module 50, effectively expanding the display status of each network connection interface 10. This achieves the purpose of connecting a single control pin 224 to multiple LEDs 51 to display various statuses of the network connection interface 10.

[0055] The above description is only a preferred embodiment of the present invention. Any equivalent changes made by applying the description of the present invention and the scope of the patent application should be included in the patent scope of the present invention.

[0056] Description of Reference Numerals

[0057] [The present invention]

[0058] 1, 3, 4, 5, 6, 7: Network switches

[0059] 10: Network connection interface

[0060] 20: Signal management unit

[0061] 22: Physical layer chip

[0062] 222: First connection interface

[0063] 224: Control pin

[0064] 24: Network media layer chip

[0065] 242: First connection interface

[0066] 244: Control pin

[0067] 30: Control unit

[0068] 32: Second connection interface

[0069] 34: Control interface

[0070] 342: Pin group

[0071] 342a: Pin

[0072] 40: Control circuit module

[0073] 41: Switching element

[0074] 50: Display module

[0075] 51: LED

[0076] 60: Reverse

[0077] Vcc: positive terminal

[0078] GND: Ground

Claims

1. A network switch comprising a plurality of network connection interfaces, each of the network connection interfaces being configured to receive a network cable connection; characterized in that: The network switch further comprises: A plurality of display modules, each of the display modules comprising a plurality of LEDs, each of the LEDs having a first electrode and a second electrode; a plurality of control circuit modules, each comprising a plurality of switch elements, each having a first terminal, a second terminal, and a control terminal, wherein the control terminal can be controlled to connect or disconnect the first terminal and the second terminal; each first terminal is electrically connected to each second terminal; and each second terminal is electrically connected to one end of a power source; a signal management unit electrically connected to the plurality of network connection interfaces and receiving a status signal from each of the plurality of network connection interfaces, the status signal comprising a first status data, a second status data, and at least one third status data; the signal management unit having a plurality of control pins and a first connection interface, wherein each of the control pins is electrically connected to the first electrodes of the plurality of LEDs of each of the display modules; the signal management unit outputs a corresponding first control signal from a corresponding control pin based on the first status data of each received status signal; and the signal management unit outputs the second status data and the third status data of each received status signal from the first connection interface; A control unit having a second connection interface and a control interface, wherein the second connection interface is electrically connected to the first connection interface of the signal management unit, and the control interface has multiple pin groups, each pin group has multiple pins, and the multiple pins are respectively electrically connected to the control ends of the switch elements of each control circuit module; the control unit receives each second state data and each third state data through the second connection interface, and outputs a corresponding second control signal from each pin group of the control port to the corresponding switch element of the control circuit module based on each second state data and each third state data, so that the multiple LEDs of each display module change the display mode corresponding to the combination of each first control signal and each second control signal.

2. The network switch according to claim 1, wherein: The status signal also includes a fourth status data; the control unit receives each fourth status data through the second connection interface, and outputs a corresponding second control signal from each pin group of the control port to the corresponding plurality of switching elements of the control circuit module based on each second status data, each third status data and each fourth status data.

3. The network switch according to claim 1, wherein: The colors of the multiple LEDs of each display module are different; the second control signals output by the control unit respectively control the conduction or cutoff of the multiple switching elements of the corresponding control circuit modules to light up or extinguish one or more of the multiple LEDs of each display module.

4. The network switch according to claim 3, wherein: Each of the third state data is one of a plurality of connection speeds. The control unit controls the conduction or cutoff of the plurality of switch elements of the corresponding control circuit modules in response to each of the connection speeds of the third state data, so that when each of the third state data is at a different connection speed, the plurality of LEDs of each of the display modules are displayed in a different manner.

5. The network switch according to claim 1, wherein: Each of the first control signals output by the control pin of the signal management unit includes one of a first mode signal and a second mode signal, wherein the first mode signal is one of a high voltage and a low voltage, and the second mode signal is continuously switched between the high voltage and the low voltage; the second control signal output by each of the pin groups of the control port of the control unit includes one of a third mode signal and a fourth mode signal, wherein the third mode signal is that one or more pins of the pin group are at a low voltage, and the fourth mode signal is that one or more pins of the pin group are at a high voltage.

6. The network switch according to claim 5, wherein: Each first state data is one of an action state and a non-action state. When the signal management unit determines that each first state data is the action state, each first control signal outputted is the second mode signal; when the signal management unit determines that each first state data is the non-action state, each first control signal outputted is the first mode signal; wherein, each second state data is one of a disconnection state and a connection establishment state; when the control unit determines that each second state data is the disconnection state, each second control signal outputted by each pin group of the control unit is the third mode signal, so that the corresponding switching element is turned off; when the control unit determines that each second state data is the connection establishment state, each second control signal outputted by each pin group of the control unit is the fourth mode signal, so that the corresponding one or more switching elements are turned on.

7. The network switch according to claim 1, wherein: It also includes multiple inverters, and each of the control pins is electrically connected to the first pole of the LED of each display module through each of the inverters; each of the inverters is used to convert a high potential in each of the first control signals into a low potential or convert a low potential in each of the first control signals into a high potential. 8 . The network switch as claimed in claim 1 , wherein the signal management unit comprises a physical layer chip, and the physical layer chip has the plurality of control pins and the first connection interface.

9. A network switch as described in claim 1, wherein the signal management unit includes a physical layer chip and a network media layer chip electrically connected to each other, wherein the physical layer chip is electrically connected to the multiple network connection interfaces, and receives each of the status signals from each of the network connection interfaces, and outputs the corresponding first control signal from a corresponding control pin based on the first status data of each of the received status signals, and transmits the second status data and the third status data of each of the status signals to the network media layer chip; the network media layer chip has the first connection interface, and transmits the second status data and the third status data of each of the received status signals to the control unit.

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