TWI463327B - Remote management apparatus and remote management system - Google Patents

Description

Remote management device and remote management system

The present invention relates to a remote management device and a remote management system; in particular, the present invention relates to a remote management device and a remote management system that can directly obtain a digital audio signal from a controlled computer and transmit it to a user computer. .

A keyboard-Video-Mouse Switch (KVM Switch) is connected between the central control device and the plurality of controlled computers, so that the user can control multiple devices through a set of keyboards, screens and mice. Charged computer. The so-called Over-IP KVM is a multi-computer switch with a network interface that couples the client computer to one or more controlled computers via the network, so that the user can Remotely control one or more controlled computers.

Figure 1 is a schematic diagram of a conventional network type multi-computer switching system. As shown in FIG. 1, the system includes a network type KVM switch 1 and a unitary device (dongle) 2. The single device can also be called a server interface module or a computer interface module. The network type KVM switch 1 is a multi-computer switcher with a network interface, and the client computer 3 can be connected to the controlled computer 4 so that the user of the user terminal 3 can pass through the keyboard and the mouse. The input device controls the plurality of controlled computers 4 and obtains instant images and sounds from the controlled computer 4. In order to extend the distance between the networked KVM switch 1 and the controlled computer 4, and handle the keyboard, mouse, video and audio signals between them, it must be between the controlled computer 4 and the networked KVM switch 1. Connect a single unit 2. The single device 2 has a plurality of connectors at one end, such as a PS/2 connector 2a for connecting the keyboard mouse of the controlled computer 4, a DB-15 connector 2b for transmitting video signals to the controlled computer 4, and audio. Signal terminal (such as headphone plug or RCA end) 2c. The other end of the unit device 2 has an RJ45 interface 2d for connecting a CAT-5 cable (not shown). In terms of the audio signal, the single device 2 is used to sample the analog audio signal output by the controlled computer 4 and convert it into a digital audio signal, and then transmit it to the user computer through the network type KVM switch 1. 3. Alternatively, the digital signal transmitted from the client computer 3 is converted into an analog audio signal for input to the controlled computer 4.

However, after the user computer 3 turns on the sound-related device (for example, a speaker), even if the controlled computer 4 does not output an analog sound signal, the single device 2 performs analog/digital conversion and sampling to obtain a digit. The voice signal, and the network type KVM switch 1 must also process the digital audio signal transmitted from the single device 2, which would impose a unnecessary burden on the entire computer switching system. Moreover, limited to the number of audio signal terminals 2c of the unit device 2, at most, only the two-channel audio signal can be supplied to the client computer 3, and a higher quality audio signal such as 5.1 channel cannot be provided. Therefore, there is a need to improve the conventional technology.

An object of the present invention is to provide a remote management device and a remote management system. Compared with the prior art, the digital audio signal can be directly obtained from the controlled computer and transmitted to the user computer.

The remote management system of the present invention is configured to couple the client computer to at least one controlled computer so that the client computer can remotely control the controlled computer. The remote management system includes a controlled computer interface module and a remote management device. The controlled computer interface module serves as the interface between the controlled computer and the remote management device, and includes a USB interface and a USB device controller. The number of USB device controllers may be one or plural; when the number of USB device controllers is plural, one of the USB device controllers is used to simulate the USB audio device to the controlled computer according to the USB protocol. So that the controlled computer can output the first digit audio through the USB interface to the controlled computer interface module, or receive the second digit audio from the controlled computer interface module via the USB interface. The remaining USB device controllers are used to emulate a human interface device and/or a large number of storage devices. A USB audio device, a human interface device, and/or a mass storage device can also be emulated by a single USB device controller.

The remote management device includes a network chip and a processor, and one end is coupled to the controlled computer interface module, and the other end is coupled to the client computer via the network. The network chip is configured to receive a first network packet output by the client computer via the network, and the first network packet represents a keyboard or mouse control signal output by the user computer. The processor is configured to convert the first network packet into a first signal and output the same to the controlled computer interface module. The controlled computer interface module converts the first signal into a keyboard or mouse control signal to control the controlled computer, and converts the image signal output by the controlled computer according to the keyboard or mouse control signal into the second signal. The output is output to the remote management device, so that the second signal is converted into a second network packet by the processor and then outputted by the network chip to the client computer to control the display chip or display of the client computer. The invention uses the USB interface to directly obtain the digital sound signal from the controlled computer and transmit it to the user computer.

The remote management device of the present invention is configured to couple the client computer to at least one controlled computer, so that the client computer can control the controlled computer via the network. The remote management system includes a USB interface, a USB device controller, an analog digital converter, a network chip, and a processor. The number of USB device controllers may be one or plural; when the number of USB device controllers is plural, one of the USB device controllers emulates the USB audio device on the controlled computer according to the USB protocol, so as to be charged The computer can output the first digital audio via the USB interface to the remote management device or receive the second digital audio via the USB interface. The remaining USB device controllers are used to emulate a human interface device and/or a large number of storage devices. A USB audio device, a human interface device, and/or a mass storage device can also be emulated by a single USB device controller. The analog digital converter converts the second analog audio into a second digital audio. The network chip receives the first network packet outputted by the client computer via the network on behalf of the keyboard or mouse control signal output by the client computer. The processor converts the first network packet into a keyboard or mouse control signal to control the controlled computer, and converts the image signal output by the controlled computer according to the keyboard or the mouse control signal into a second network packet. The circuit chip is output to the client computer to control the display chip or display of the client computer. The invention uses the USB interface to directly obtain the digital sound signal from the controlled computer and transmit it to the user computer.

The invention provides a remote management device and a remote management system. In a preferred embodiment, the remote management device of the present invention is a network type KVM switch, and the remote management system of the present invention is used with a network type KVM switch; however, the remote management device of the present invention can For other types of KVM switches, the remote management system of the present invention can be used with other types of KVM switches.

2A is a schematic diagram of an embodiment of a remote management system of the present invention. As shown in FIG. 2A, the remote management system 10 of the present invention is used to couple the client computer 100 to one or more controlled computers 200 so that the client computer 100 can remotely control the controlled computer 200. As shown in FIG. 2A, the remote management system 10 includes a computer interface module 11 and a remote management device 12. The computer interface module 11 is connected between the controlled computer 200 and the remote management device 12 between the two. The appearance of the computer interface module 11 has a USB connector 11a, an image connector 11b, and a casing 11c. The USB connector 11a is used to connect to a USB port of the controlled computer 200; the image connector 11b is used to connect an image port of the controlled computer 200 to receive the image signal outputted by the image. The USB connector 11a and the image connector 11b extend outward from the housing 11c by one or more cables 11d, and the housing 11c further has an RJ-45 connector 11e for connecting a CAT-5. Cable (not shown). The CAT-5 cable is a cable used in Ethernet, which has a total of four pairs of twisted pairs (or twisted pairs).

Figure 2B is an internal functional block diagram of the remote management system shown in Figure 2A. As shown in FIG. 2B, the computer interface module 11 includes a USB interface 111, a USB device controller 112, an RJ45 interface 113, an RS-485 transceiver 114, and a processor 115. The number of the USB device controllers 112 may be one or more. When the number of the USB device controllers is multiple, one of the USB device controllers may emulate the USB audio device with the controlled computer 200 according to the USB protocol. The controlled computer 200 can treat the computer interface module 11 as a USB audio device, and enable the controlled computer 200 to output the first digital audio D ₁ to the computer interface module 11 via the USB interface 111, or via the USB interface 111. The second digital audio D _{2 is} received from the computer interface module 11. In more detail, during the enumeration of the USB protocol, the USB device controller 112 of the computer interface module 11 transmits some appropriate descriptors to the controlled computer 200, so that the controlled computer 200 is The computer interface module 11 will be considered as a USB audio device.

Still referring to FIG. 2B, in the computer interface module 11, in addition to the USB related circuit described above, the computer interface module 11 also includes image related circuits, such as the image interface 116, the image signal processing circuit 117, and the differential signal transmission and reception. 118. The image signal processing circuit 117 mainly processes the single-ended image signal outputted by the controlled computer 200 to be transmitted on the CAT-5 cable. The image signal output by the controlled computer 200 includes at least an RGB signal, a horizontal synchronization signal, and a vertical synchronization signal. The image signal processed by the image signal processing circuit 117 can be transmitted to a greater distance than the unprocessed image signal. For example, the RGB signal, the horizontal sync signal, and the vertical sync signal are differentially integrated on the twisted wire pair of the CAT-5 cable. The USB device controller 112, the RS-485 transceiver 114, the processor 115, the video signal processing circuit 117, and the differential signal transceiver 118 described above are covered by the casing 11c of FIG. 2A.

In addition, the remote management device 12 also includes a differential signal transceiver 121 and an image signal restoration circuit 122 corresponding to the computer interface module 11. The image signal restoration circuit 122 is configured to convert the image difference signal to a single-ended signal image signal and perform some image compensation.

The transmission of the first digital audio D ₁ and the second digital audio D ₂ can be performed by an isochronous transmission method in the USB protocol. The processor means 124 into the computer interface module 11 of the first digital audio via the D ₁ may be converted to the remote management of network packets 12, and then the wafer 123 is output to the network by the client computer 100, and then reached the client computer so that the control 100 emits the function of the timely sound of the controlled computer 200. In addition, in the embodiment, the remote management device 12 first converts the first digital audio D ₁ into a decoding and the like, and then converts it into a network packet via the processor 124 for output to the client computer 100.

In a preferred embodiment, the USB device controller 112 can also emulate a Human Interface Device (HID) on the controlled computer 200 according to the universal serial bus protocol, so that the controlled computer 200 also has a computer interface. The module 11 is regarded as a USB human interface device, and the client computer 100 can control the control signals of the input device such as a keyboard or a mouse to the controlled computer 200 via the computer interface module 11. The transmission of the control signal between the controlled computer 200 and the computer interface module 11 can be performed by an interrupt transmission method in the USB protocol.

In other embodiments, the USB device controller 112 can also emulate other devices such as a mass storage device (Mass Storage Device) on the controlled computer 200 according to the general sequence bus protocol. When a large number of storage devices are emulated, the controlled computer 200 can treat the computer interface module 11 as a USB mass storage device and provide a virtual media for its use. The virtual media is mapped by a storage device such as a physical hard disk drive, a CD player or a floppy disk drive of the client computer 100. The user can perform work such as booting or refilling the controlled computer 200 via the virtual media on the client computer 100. An application provided by the manufacturer of the remote management device 12 generates an interface for the user of the client computer 100 to operate the virtual media.

The aforementioned USB audio device, human interface device and USB mass storage device can be emulated by a single USB device controller, or can be emulated by several different USB device controllers. For example, a USB device can be emulated by a USB device controller; another USB device controller emulates a human interface device and/or a large number of storage devices. Alternatively, a USB device can be emulated by a USB device controller and a human interface device; another USB device controller emulates a large number of storage devices. Alternatively, the USB audio device can be emulated by one (first) USB device controller; the human interface device can be emulated by another (second) USB device controller; and emulated by another (third) USB device controller A large number of storage devices are available. Those of ordinary skill in the art to which the invention pertains may derive from the foregoing description all possible combinations thereof. When the number of the USB device controllers 112 is plural, it can be seen from the appearance of the computer interface module 11 that the number of the aforementioned USB connectors 11a is also plural.

In addition, in this embodiment, the first digital audio D ₁ may be an audio signal of more than 2 channels, such as a 5.1 channel signal, to match a high resolution (high fax) audio device; however, in other embodiments Other types of signals can be used as needed. For example, 6.1 or 7.1 or even higher channel signals. The remote management system of the present invention directly uses the USB interface 111 as the transmission interface of the audio signal to obtain the first digital audio D ₁ from the controlled computer 200, so that the audio signal can be directly input into the remote management without sampling and analog/digital conversion. The device 12, and when the controlled computer 200 does not output digital audio, the computer interface module 11 and the remote management device 12 will not receive the USB packet about the digital audio, and the computer interface module 11 and the remote management device are reduced. 12 burden. In addition, the cost of the audio signal terminal can be saved.

As shown in FIG. 2B, one end of the remote management device 12 is coupled to the computer interface module 11 via a CAT-5 cable (between the RJ-45 interface 125 and the RJ-45 interface 113), and the other end is via the computer interface module 11 The network is coupled to the client computer 100. In this embodiment, the remote management device 12 includes a differential signal transceiver 121, an image signal restoration circuit 122, a network chip 123 and a processor 124, an RJ-45 interface 125, and an RS-485 transceiver 126. 2C is a schematic diagram of the remote control system shown in FIG. 2A transmitting a control signal from the client computer 100 to the controlled computer 200. Shown, the web 123 of the wafer 100 for receiving a first client computer of the network packet via the output P ₁ as in the first web of FIG. 2C, wherein the first network packet P ₁ on behalf of the client computer keyboard output 100, Control signal C of the mouse or other cursor control device. The processor 124 is configured to convert the first network packet P ₁ into the first signal S ₁ and output it to the computer interface module 11 . The computer interface module 11 converts the first signal S ₁ into a keyboard or mouse control signal C to control the controlled computer 200.

The 2D figure is a schematic diagram of the remote control system shown in FIG. 2A transmitting the video signal from the controlled computer 200 to the client computer 100. As shown in FIG. 2D, in accordance with the keyboard or mouse control signal C shown in FIG. 2C, the computer interface module 11 can convert the image signal V output by the controlled computer 200 into the second signal S ₂ and output it to the second signal S ₂ . remote management apparatus 12, so that the second signal S ₂ output from the second network after the packet P ₂ from the wafer 123 to the network client computer 100 to control the display 100 of the client computer via a wafer or display processor 124 is converted to In addition, a function of controlling the client computer 100 to display the timely image of the controlled computer 200 is achieved. In this embodiment, the computer interface module 11 receives the first signal S ₁ shown in FIG. 2C by the RS-485 transceiver 114 and transmits the second signal S ₂ to the remote signal transceiver 118 to the far end. End management device 12.

Figure 3 is a schematic diagram of another embodiment of a remote management device of the remote management system shown in Figure 2A. As shown in FIG. 3, the remote management device 12 further includes a digital analog converter 127 and an analog digital converter 128 in addition to the aforementioned network chip 123 and processor 124. The digital analog converter 127 is configured to convert the first digital audio D ₁ into the first analog audio A ₁ for output to the sound output device 300 (for example, a speaker). The analog-to-digital converter 128 is configured to convert the second analog audio A ₂ generated by the sound input device 400 (for example, a microphone) into the second digital audio D ₂ , and then output to the computer interface module 11 by the processor 124.

In another embodiment, if it is not necessary to extend the distance between the remote management device 12 and the controlled computer 200, the USB interface and the USB device controller can be directly disposed in the remote management device without being remotely managed. A computer interface module is provided between the device and the controlled computer as an interface between the two.

Figure 4A is a schematic diagram of a second embodiment of the remote management device of the present invention. As shown in FIG. 4A, the remote management device 20 is configured to couple the client computer 100 to one or more controlled computers 200 so that the client computer 100 can control the controlled computer 200 via the network. The client computer 100 is provided with an application 180 provided by the manufacturer of the remote management device 20, which provides a user of the client computer 100 to manage the interface of the remote management device 20, and also enables the user The user can see the image output by the controlled computer 200. The remote management device 20 has a local terminal control device 250, which includes a keyboard, a screen and a mouse, so as to be close to the remote management device 20, in addition to being connected to a client computer 100 via a network. The user can also manage the remote management device 20 and control the controlled computer 200. The remote management device 20 includes a USB interface 21, a USB device controller 22, an analog digital converter 23, a network chip 25, and a processor 26. The USB device controller 22 emulates the USB audio device on the controlled computer 200 according to the USB protocol, so that the controlled computer 200 can output the first digital audio D ₁ to the remote management device 20 via the USB interface 21 or receive via the USB interface 21. The second digit audio D ₂ . A first distal end of the input digital audio management apparatus ₁ D 20 may be converted via the processor 26 remote management apparatus 20 is a packet network, from the network and then outputs the wafer 25 to the client computer 100, and then reached the client computer so that the control 100 emits the function of the instant sound of the controlled computer 200. In addition, in the embodiment, the remote management device 20 converts the first digital audio D ₁ into a decoding or the like as needed, and then converts it into a network packet via the processor 26 for output to the client computer 100.

In a preferred embodiment, the USB device controller 22 can also emulate the human interface device on the controlled computer 200 according to the universal serial bus protocol. In other embodiments, the USB device controller 22 can also emulate other devices such as a large number of storage devices on the controlled computer 200 according to the general sequence bus protocol. Moreover, in the present embodiment, the first digital audio D ₁ can be a 5.1 channel signal; however, in other embodiments, other types of signals can be used as desired. The remote management device of the present invention uses the USB interface 21 as the transmission interface of the audio signal to directly obtain the first digital audio D ₁ from the controlled computer 200. At this time, the audio signal does not need to be sample-converted, thereby saving the remote management device 20. burden.

Figure 4B is a schematic diagram of the remote management device converting the audio signal shown in Figure 4A. As shown in FIG. 4B, the analog-to-digital converter 23 converts the second analog audio A ₂ generated from the voice input device 400 into the second digital audio D ₂ . In the present embodiment, the sound input device 400 is a microphone. The digital analog converter 24 converts the first digital audio D ₁ into the first analog audio A ₁ for output to the sound output device 300. In the present embodiment, the sound output device 300 is a speaker. Figure 4C is a schematic diagram of the remote management device transmitting the control signal shown in Figure 4A. As shown in FIG. 4C, the web 25 of the wafer receiving a first client computer 100 via Internet network packet output P _1, P ₁ wherein the first network packet representing the output 100 of the client computer keyboard or mouse control Signal C. The processor 26 of the first network packet P ₁ is converted into a keyboard or a mouse control signal C to control the computer 200 controlled.

The 4D figure is a schematic diagram of the remote management device transmitting the video signal shown in FIG. 4A. As shown in FIG. 4D, the processor 26 can convert the image signal V output by the controlled computer 200 according to the keyboard or mouse control signal C shown in FIG. 4C into the second network packet P _{2 and} then the network. The chip 25 is output to the client computer 100 to control the display chip or display of the client computer 100, thereby achieving the function of controlling the client computer 100 to display the live image of the controlled computer 200.

It should be noted that in another embodiment of the present invention, the remote management device 20 may not have the analog digital converter 23 and the digital analog converter 24 shown in FIG. 4A, and the analog digital or digital analog conversion thereof. It can be executed by the client computer 100. After the application 180 provided by the manufacturer of the remote management device 12 is executed on the client computer 100, the application 180 can indirectly control other soft and hardware of the client computer 100 via the operating system of the client computer 100. The analog digital or digital analog conversion of the audio signal is performed. For example, the first digital audio D _{1 is} converted into an analog audio and output to a group of speakers connected to the household computer 100.

The present invention has been described by the above related embodiments, but the above embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, the modifications and equivalents of the spirit and scope of the invention are included in the scope of the invention.

10‧‧‧ Remote Management System

20‧‧‧ Remote management device

11‧‧‧Computer Interface Module

21‧‧‧USB interface

11a‧‧‧USB connector

22‧‧‧USB device control

11b‧‧‧Image connector

23‧‧‧ Analog Digital Converter

11c‧‧‧shell

24‧‧‧Digital Analog Converter

11d‧‧‧ cable

25‧‧‧Network Chip

11e‧‧‧RJ-45 connector

26‧‧‧ Processor

111‧‧‧USB interface

100‧‧‧Customer computer

112‧‧‧USB device controller

180‧‧‧Application

113‧‧‧RJ45 interface

200‧‧‧Controlled computer

114‧‧‧RS-485 transceiver

250‧‧‧Local central control unit

115‧‧‧ processor

300‧‧‧Sound output device

116‧‧‧Image interface

400‧‧‧Sound input device

117‧‧‧Image signal processing circuit

A ₁ ‧‧‧first analogy

118‧‧‧Differential Signal Transceiver

A ₂ ‧‧‧Second analogy

12‧‧‧ Remote management device

C‧‧‧Keyboard or mouse control signal

121‧‧‧Differential Signal Transceiver

D ₁ ‧‧‧first digit audio

122‧‧‧Image signal reduction circuit

D ₂ ‧‧‧second digit audio

123‧‧‧Network Chip

P ₁ ‧‧‧First network packet

124‧‧‧ Processor

P ₂ ‧‧‧Second network packet

125‧‧‧RJ-45 interface

S ₁ ‧‧‧first signal

126‧‧‧RS-485 transceiver

S ₂ ‧‧‧second signal

127‧‧‧Digital Analog Converter

V‧‧‧ video signal

128‧‧‧ analog digital converter

1 is a schematic diagram of a conventional network type multi-computer switching system; FIG. 2A is a schematic diagram of an embodiment of the remote management system of the present invention; and FIG. 2B is a remote management system shown in FIG. 2A The internal function block diagram; the 2C picture is a schematic diagram of the remote control system in the remote management system shown in FIG. 2A transmitting the control signal to the controlled computer by the user terminal computer; and the 2D picture is in the remote management system shown in FIG. 2A. A schematic diagram of transmitting a video signal from a controlled computer to a client computer; FIG. 3 is a schematic diagram of another embodiment of a remote management device of the remote management system shown in FIG. 2A; 4A is a schematic diagram of an embodiment of the remote management device of the present invention; FIG. 4B is a schematic diagram of the remote management device converting the audio signal shown in FIG. 4A; and FIG. 4C is the remote end shown in FIG. 4A. A schematic diagram of the management device transmitting the control signal; and the 4D image is a schematic diagram of the remote management device transmitting the video signal shown in FIG. 4A.

10‧‧‧ Remote Management System

121‧‧‧Differential Signal Transceiver

11‧‧‧Computer Interface Module

122‧‧‧Image signal reduction circuit

111‧‧‧USB interface

123‧‧‧Network Chip

112‧‧‧USB device controller

124‧‧‧ Processor

113‧‧‧RJ45 interface

125‧‧‧RJ-45 interface

114‧‧‧RS-485 transceiver

126‧‧‧RS-485 transceiver

115‧‧‧ processor

100‧‧‧Customer computer

116‧‧‧Image interface

200‧‧‧Controlled computer

117‧‧‧Image signal processing circuit

D ₁ ‧‧‧first digit audio

118‧‧‧Differential Signal Transceiver

D ₂ ‧‧‧second digit audio

12‧‧‧ Remote management device

Claims (11)

A remote management system is configured to couple a client computer to at least one controlled computer, so that the client computer can remotely control the controlled computer, and the remote management system includes at least: a computer interface module a group connected to the controlled computer, the computer interface module comprising at least: a universal serial bus (USB) interface; and one or more universal serial bus device controllers for converging according to the universal sequence The scheduling protocol emulates at least one universal serial bus audio device for the controlled computer, so that the controlled computer can output a first digit audio through the universal serial bus interface to the computer interface module, or Receiving a second digit audio from the computer interface module via the universal serial bus interface; and a remote management device, one end coupled to the computer interface module, and the other end coupled to the user end via a network The remote management device includes: a network chip for receiving a first network packet output by the client computer via the network, the first network The package represents at least one keyboard or mouse control signal output by the client computer; and a processor for converting the first network packet into a first signal and outputting the same to the controlled computer interface module The computer interface module is configured to extend a distance between the remote management device and the controlled computer, and convert the first signal into the keyboard or mouse control signal to control the controlled computer, and The controlled computer is adapted to the keyboard or The image signal outputted by the mouse control signal is converted into a second signal and output to the remote management device, so that the second signal is converted into a second network packet by the processor and output by the network chip. To the client computer to control one of the display computers of the client computer. The remote management system of claim 1, wherein the first digital audio system is a voice signal of more than 2 channels. The remote management system of claim 1, wherein the one or more universal serial bus device controllers emulate a human interface device for the controlled computer according to a universal serial bus protocol (Human Interface Device) ; HID) or a mass storage device (Mass Storage Device). The remote management system of claim 1, wherein the remote management device further comprises: a digital analog converter for converting the first digital audio into a first analog audio for output to a a speaker; and an analog-to-digital converter for converting a second analog audio to the second digital audio for outputting the controlled computer interface module. The remote management system of claim 1, wherein the computer interface module further comprises: an RS-485 transceiver for receiving the first signal; and a differential signal transceiver for The second signal is transmitted to the remote management device. The remote management system of claim 1, wherein the computer interface module further comprises: a casing for covering the universal serial busbar device controller; a USB connector for connecting to one of the USB ports of the controlled computer; an image connector for connecting an image port of the controlled computer; and an RJ-45 interface for connecting a CAT-5 cable a wire; wherein the USB connector and the image connector extend outward from the housing via at least one cable. A remote management device is configured to couple a client computer to at least one controlled computer, so that the client computer can control the controlled computer via a network, and the remote management device includes at least: a universal a sequence bus interface device; one or more universal sequence bus device controllers for emulating at least one universal sequence bus audio device for the controlled computer according to the universal sequence bus protocol, so that the controlled computer can pass the The universal serial bus interface outputs a first digit audio to the remote management device, or receives a second digital audio via the universal serial bus interface; and the analog digital converter converts a second analog audio into the first Two-digit audio, a network chip, for receiving a first network packet output by the client computer via the network, the first network packet representing a keyboard or mouse control output by the user computer And a processor, converting the first network packet into the keyboard or mouse control signal to control the controlled computer, and adapting the controlled computer to the keyboard or One of the converted video signal to a second control signal murine network packet is output to the network by the wafer to the client computer, a user to control the end of one computer monitor. The remote management device of claim 7, wherein the first digital audio system is a voice signal of more than 2 channels. The remote management device of claim 7, wherein the one or more universal serial bus device controllers emulate a human-machine interface device or a mass storage device according to the universal serial bus protocol. Device. The remote management device of claim 7, wherein the remote management device further comprises: a digital analog converter for converting the first digital audio into a first analog audio for outputting to a speaker. A remote management system is configured to couple a client computer to at least one controlled computer, so that the client computer can remotely control the controlled computer, and the remote management system includes at least: a computer interface module a group connected to the controlled computer, the computer interface module comprising at least: a universal serial bus (USB) interface; and one or more universal serial bus device controllers for converging according to the universal sequence The scheduling protocol emulates at least one universal serial bus audio device for the controlled computer, so that the controlled computer can output a first digit audio through the universal serial bus interface to the computer interface module, or Receiving a second digit audio from the computer interface module via the universal serial bus interface; and a remote management device, one end coupled to the computer interface module, and the other end coupled to the user end via a network a computer, the remote management device includes at least: a universal serial bus (USB) interface; and one or more universal serial bus device controllers The method for simulating the controlled computer to simulate at least one universal serial bus audio device according to the universal serial bus protocol, so that the controlled computer can face the computer interface module output through the universal serial bus a digital audio, or receiving a second digit audio from the computer interface module via the universal serial bus interface; and a remote management device having one end coupled to the computer interface module and the other end via a network The remote management device is coupled to the client computer, and the remote management device includes: a network chip, configured to receive a first network packet output by the client computer via the network, where the first network packet represents At least one keyboard or mouse control signal output by the client computer; and a processor for converting the first network packet into a first signal and outputting the same to the controlled computer interface module; An application, installed on the client computer, to provide a user to manage the interface of the remote management device, and to convert the first digital audio into a first analog audio to lose The computer interface module is configured to extend the distance between the remote management device and the controlled computer, and convert the first signal into the keyboard or mouse control signal to control the controlled computer. And the controlled computer converts one of the single-ended video signals outputted by the keyboard or the mouse control signal into a differential video signal, and outputs the same to the remote management device, so that the differential video signal is processed through the processing. The device converts to a second network packet and outputs the network chip to the client computer to control one of the display terminals of the client computer.