TWI804789B - Usb hub device and hub system - Google Patents

Abstract

A USB hub device and hub system are provided. The hub device includes a first upstream port for transmitting data by a first protocol and a second protocol, a selector, at least one first downstream port for receiving the first image data , a first bridge for receiving the first image data and converting the first image data into the data according a first protocol or a second protocol for outputting, and a second upstream port for transmitting and receiving the data from the first bridge based on the first protocol or the second protocol.

Description

Universal serial bus hub device and hub system

The present invention relates to an electronic device, in particular to a universal serial bus-bar collection device and a collection system.

With the rapid development of information technology, the application of electronic products is becoming more and more popular. For example, handheld electronic devices such as notebook computers, mobile phones and tablet computers can be seen everywhere. The characteristics of these electronic devices are that they can be carried around and used anytime and anywhere, and the electronic devices are used to transmit image data to an external screen. At present, one way is to allow multiple electronic products to transmit image data or power at the same time through a one-port to multi-port universal serial bus hub (USB hub). Specifically, the electronic product can only unidirectionally transmit image data from the electronic product to an external screen through the universal serial bus hub, but cannot store the image data, nor can it further return the image data It is quite inconvenient to use to deal with this electronic product. In view of this, there is still a need to develop a new type of hub device to improve the above problems.

One object of the present invention is to provide a universal serial bus hub device and a hub system, through the selector, the protocol controller, the first bridge device and the second bridge device in the first host, the second host, the display device and the Peripheral devices transmit data to improve the convenience of use of the hub device.

In order to achieve the above object, one embodiment of the present invention provides a universal serial bus (USB) hub device, including: a first uplink port, used to send and receive a data, the data is a first protocol or a second protocol transmission, the data transmitted by the first protocol includes a first image data; a selector coupled to the first uplink port; at least one first downlink port coupled to the a selector, and receive the first image data; a first bridging device, coupled to the selector, for receiving the first image data, and converting the first image data into the first protocol or the second protocol and a second uplink port coupled to the first bridging device for transmitting the data of the first protocol or the second protocol from the first bridging device.

In one embodiment of the USB hub device, when the first protocol is the USB3.0 protocol and the data is transmitted by the first protocol, the selector transmits the first image data to the at least one first downstream port And the first bridging device, the first bridging device receives the first image data and converts the first image data into data of the first protocol or the second protocol and transmits it to the second uplink port.

In one embodiment of the USB hub device, the first bridging device converts the first image data into the first protocol or the communication protocol used by a device coupled to the second upstream port. The data of the second protocol is sent to the second uplink port.

In one embodiment of the USB hub device, when the first protocol is the USB3.0 protocol, and the data is transmitted by the first protocol, when a device is coupled to the second upstream port by the first protocol, the The first bridge device converts the first image data into data of the first protocol and transmits the data to the second uplink port.

In an embodiment of the USB hub device, when the first protocol is the USB3.0 protocol and the second protocol is the USB4.0 protocol, when a device is coupled to the second upstream port using the second protocol, and The selector transmits the data to the first bridge device with the first protocol, and the first bridge device converts the first image data into data of the second protocol and transmits the data to the second uplink port.

In the USB hub device of an embodiment, the USB hub device further includes: a protocol a controller, coupled to the selector, adapted to transmit the data of the second protocol; at least one second downlink port, coupled to the protocol controller, adapted to convert the data of the second protocol The data becomes a second image data and is output to the at least one first downlink port, or the data of the second protocol is output to one of the at least one second downlink port; and a second bridging device , coupled to the protocol controller, the protocol controller converts the data of the second protocol into the data of the first protocol and sends it to the second bridge device, or the protocol controller converts the data of the second protocol sent to the second bridging device; wherein, the second uplink port is coupled to the second bridging device for transmitting the data of the first protocol or the second protocol of the first bridging device, or for Transmitting and receiving the first protocol or the second protocol data of the second bridge device.

In an embodiment of the USB hub device, when the second protocol is the USB4.0 protocol, and the data is transmitted by the second protocol, the selector transmits the data to the protocol controller, and the protocol controller sends the data to the protocol controller. The data is converted into the data of the first protocol to the second bridge device or the data of the second protocol is transmitted to the second bridge device, and then transmitted to the second uplink port.

In one embodiment of the USB hub device, when the second protocol is the USB4.0 protocol, and the data is transmitted by the second protocol, the selector transmits the data to the protocol controller, and the protocol controller converts the The data becomes the second image data output to the at least one first downlink port, or the data of the second protocol is output to one of the at least one second downlink port.

In one embodiment of the USB hub device, when a display device is coupled to the at least one first downstream port, the second image data is output to the at least one first downstream port, and when the display device is coupled to the At least one second downlink port, the protocol controller outputs the data of the second protocol to the at least one second downlink port.

In an embodiment of the USB hub device, the selector is a multiplexer.

In an embodiment of the USB hub device, the first protocol includes an alternate mode of the Display Port (DP) protocol.

One embodiment of the present invention provides a universal serial bus (USB) hub system, including: a first host; a second host; a USB hub device includes: a first upstream connection port, used for The host transmits and receives a data, the data is transmitted by a first protocol or a second protocol, and the data transmitted by the first protocol includes a first image data; a selector is coupled to the first uplink port ; at least one first downlink port, coupled to the selector, and receive the first image data; a first bridging device, coupled to the selector, to receive the first image data, and the first The image data is converted into the data of the first protocol or the second protocol for transmission; and a second uplink port is coupled to the first bridge device and the second host to transmit data from the first bridge device The data of the first protocol or the second protocol; and a display device coupled to the at least one first downlink port for displaying the data.

In the USB hub system of an embodiment, when the first protocol is the USB3.0 protocol, and the first host transmits the data with the first protocol, the selector transmits the first image data to the at least one first The display device connected to the downlink port and the first bridging device, the first bridging device receives the first image data and converts the first image data into data of the first protocol or the second protocol and transmits it to the The second host connected to the second uplink port.

In an embodiment of the USB hub system, the first bridging device converts the first image data into the first protocol or the communication protocol used by a device coupled to the second uplink port. The data of the second protocol is sent to the second host connected to the second uplink port.

In the USB hub system of an embodiment, when the first protocol is the USB3.0 protocol, and the first host transmits the data using the first protocol, when the second host is coupled to the first Two uplink ports, the first bridge device converts the first image data into data of the first protocol and transmits to the second host connected to the second uplink port.

In the USB hub system of an embodiment, when the first protocol is the USB3.0 protocol and the second protocol is the USB4.0 protocol, when the second host is coupled to the second uplink port using the second protocol , and the selector sends the data to the first bridging device with the first protocol, the first bridging device converts the first image data into data of the second protocol and sends the data to the second uplink port to which the second host is connected.

In an embodiment of the USB hub system, the USB hub system further includes a protocol controller, coupled to the selector, suitable for transmitting and receiving the data of the second protocol; at least one second downstream connection port, coupled to the a protocol controller, the protocol controller is suitable for converting the data of the second protocol into a second image data and outputting it to the display device connected to the at least one first downlink port, or the data of the second protocol The data is output to one of the at least one second downstream connection port; and a second bridging device coupled to the protocol controller, the protocol controller converts the data of the second protocol into the data of the first protocol transmit to the second bridge device, or the protocol controller transmits the data of the second protocol to the second bridge device; wherein, the second uplink port is coupled to the second bridge device for sending and receiving The data of the first protocol or the second protocol of the first bridge device, or the data of the first protocol or the second protocol used for transmitting and receiving the second bridge device.

In the USB hub system of an embodiment, when the second protocol is the USB4.0 protocol, and the data is transmitted by the second protocol, the selector transmits the data to the protocol controller, and the protocol controller sends the data to the protocol controller. The data is converted into the data of the first protocol to the second bridge device or the data of the second protocol is transmitted to the second bridge device, and then transmitted to the second uplink port.

In the USB hub system of an embodiment, when the second protocol is the USB4.0 protocol, and The data is transmitted by the second protocol, the selector transmits the data to the protocol controller, and the protocol controller converts the data into the second image data output to the display device connected to the at least one first downlink port , or output the data of the second protocol to one of the at least one second downlink port.

In one embodiment of the USB hub system, when the display device is coupled to the at least one first downstream port, the second image data is output to the at least one first downstream port, and when the display device is coupled to the At least one second downlink port, the protocol controller outputs the data of the second protocol to the at least one second downlink port.

In an embodiment of the USB hub system, the selector is a multiplexer.

In an embodiment of the USB hub system, the first protocol includes an alternate mode of the Display Port (DP) protocol.

The universal serial bus hub device and the hub system of the present invention transmit data between the first host, the second host, the display device and the peripheral devices through the selector, the protocol controller, the first bridging device and the second bridging device, In order to improve the convenience of use of the hub device.

100a, 100b: USB hub device

102: The first uplink port

104: selector

108: The first downlink port

109: Downlink port

110: first bridging device

112: Second uplink port

114:Agreement controller

116: Second downlink port

118: Second bridge device

112: The first uplink port

200: the first host

202: second host

204: display device

206: Peripheral device

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. Those skilled in the art to which the present invention pertains can also obtain other drawings based on these drawings.

FIG. 1 is a system block diagram of a hub device according to a first embodiment of the present invention.

FIG. 2 is a system block diagram of a line concentrating device according to a second embodiment of the present invention.

Referring to the drawings, where the same reference numerals represent the same or similar components, the principles of the present invention are illustrated by implementing them in a suitable computing environment. The following description is based on illustrated specific embodiments of the invention, which should not be construed as limiting other specific embodiments of the invention not described in detail herein.

Referring to FIG. 1, it shows a system block diagram of a hub device according to a first embodiment of the present invention. The universal serial bus (universal serial bus, USB) hub device 100a includes a first uplink port 102, a selector 104, at least one first downlink port 108, at least one downlink port 109, a first bridge device 110 and The second uplink port 112 .

As shown in the USB hub device 100a shown in FIG. 1, the first upstream connection port 102 is used to transmit and receive a data, and the data is transmitted by the first protocol or the second protocol. The first protocol is, for example, the USB3.0 protocol. The second protocol is, for example, the USB4.0 protocol, and the data transmitted by the first protocol includes either or both of a first image data and a first data data. The selector 104 is coupled to the first uplink port 102 for controlling the connection state between the first uplink port 102 and the first bridge device 110, for example, controlling the first uplink port 102 to be connected to the The first bridging device 110 . In one embodiment, the selector 104 is, for example, a multiplexer. At least one first downlink port 108 is coupled to the selector 104 and receives the first image data. The first bridge device 110 is coupled to the selector 104 to receive the first image data, and convert the first image data into the data of the first protocol or the second protocol for transmission, such as the first bridge The device 110 transmits the converted data to the second uplink port 112 . The second uplink port 112 is coupled to the first bridge device 110 for transmitting the data of the first protocol or the second protocol from the first bridge device 110 .

For the USB hub device 100a shown in FIG. 1, in one embodiment, when the first protocol is the USB3.0 protocol, and the data is transmitted by the first protocol, the data transmitted by the first protocol is, for example, Include the first image data. In other words, the selector 104 transmits the first image data to the first bridge device 110 . The first bridge device 110 receives the first image data and converts the first image data into data of the first protocol or the second protocol and sends it to the second uplink port 112 . Further, the first protocol includes an alternate mode of the Display Port (DP) protocol, and the data in this embodiment can be transmitted in the alternate mode of the Display Port (DP) protocol, so that the After the first bridge device 110 receives the first image data, it converts the first image data into data such as USB3.0 protocol (first protocol) or data such as USB4.0 (second protocol), and then transmits to The second uplink port 112 . Wherein, the data transmitted in the alternative mode of the display interface (DP) protocol includes, for example, the first image data, or includes both the first image data and the first data data.

As mentioned above, in the USB hub device 100a of this embodiment, the first bridge device 110 uses the communication protocol used by a device coupled to the second uplink port 112 to use the first image data Convert data into the first protocol or the second protocol, and send to the second uplink port 112 . In the following text, the data is transmitted to the USB hub device 100 a through the first upstream connection port 102 in an alternative mode of the display interface (DP) protocol as an example for illustration. Please refer to FIG. 1 again. In one embodiment, when a device is also coupled to the second uplink port 112 with the first protocol, and the first bridging device 110 is receiving the data transmitted from the selector 104 For the first image data, the first bridge device 110 will convert the first image data into the data of the first protocol and send it to the second uplink port 112, and then send it through the second uplink port 112 to the device.

In another embodiment, when another device is coupled to the second uplink port 112 using the second protocol, and the selector 104 transmits the data to the first bridge device 110 using the first protocol, the The first bridge device 110 can convert the first image data into data of the second protocol and transmit the data to the second uplink port 112 .

In the above-mentioned USB hub device 100a, the data can be sequentially transmitted from the first upstream connection port 102, the selector 104 and the first bridge device 110 to the second upstream connection port 112, and sent to the second upstream connection port The data of 112 can also be sent back to the first upstream port 102 by the second upstream port 112, the first bridge device 110 and the selector 104 in sequence, or by the second upstream port 112 and the selector in sequence 104 returns the first uplink port 102, and then back to the first host 200, and the first uplink port 102 transmits the data to the at least one first downlink port 108 via the selector 104, to improve The convenience of using the USB hub device 100a. The above-mentioned data sent to the second host 202 can be stored in the second host 202, and can also be displayed on the second host 202 with a display device. In a preferred embodiment, the above-mentioned data sent back to the first host 200 can also be stored in the first host 200, which is not limited herein.

As shown in FIG. 1 , the USB hub system includes a first host 200 , a second host 202 , a USB hub device 100 a , a display device 204 and peripheral devices 206 . The USB hub device 100 a includes a first uplink port 102 , a selector 104 , at least one first downlink port 108 , at least one downlink port 109 , a first bridge device 110 and a second uplink port 112 . The first uplink port 102 is used for transmitting and receiving a data from the first host 200, and the data is transmitted by a first protocol or a second protocol. The selector 104 is coupled to the first uplink port. In one embodiment, the selector 104 is, for example, a multiplexer. At least one first downlink port 108 is coupled to the selector 104 and receives the first image data. The first bridge device 110 is coupled to the selector 104 for receiving the first image data, and converting the first image data into data of the first protocol or the second protocol for transmission. The second uplink port 112 is coupled to the first bridge device 110 and the second host 200 for transmitting the data of the first protocol or the second protocol from the first bridge device 110 . The display device 204 is coupled to the at least one first downlink port 108 for displaying the data. Example of the first downstream connection port 108 coupled with the display device 204 For example, it is a Display Port interface that complies with the VESA (Video Electronics Standards Association) standard.

In a preferred embodiment, the USB hub device 100a can also have a downstream connection port 109 such as a Type-C connector supporting the USB protocol or other connectors, and the peripheral device 206 can be coupled to the downstream connection port 109 . Therefore, when the alternative mode of the data display interface (DP) protocol is transmitted, the above-mentioned first data data can be transmitted to the downlink port 109 through the selector 104, and then the peripheral device 206 can receive it.

For the USB hub system shown in Figure 1, when the first protocol is the USB3.0 protocol, and the first host 200 uses the first protocol to transmit the data to the first upstream connection port 102, the data will then pass through the The first uplink port 102 transmits to the selector 104 . In the case that the data is transmitted in an alternative mode of the Display Interface (DP) protocol, the data includes, for example, the first image data, or includes both the first image data and the first data data. The selector 104 transmits the first image data to the display device 204 connected to the at least one first downlink port 108 and the first bridge device 110 . After the data is transmitted to the selector 104 in the alternative mode of the display interface (DP) protocol, the first bridge device 110 coupled to the selector 104 will receive the first image data transmitted from the selector 104 and The first image data is converted into data of the first protocol or the second protocol and sent to the second host 202 connected to the second uplink port 112 . In a preferred embodiment, after the data is sent to the selector 104 in an alternative mode of the Display Interface (DP) protocol, the first image data can also be sent to the first downstream port 108 connected The display device 204 .

As in the USB hub system shown in FIG. 1, the first bridge device 110 is based on the communication protocol used by a device (such as the second host 202) coupled to the second uplink port 112 to use the first bridge device 112. An image data is converted into data of the first protocol or the second protocol, and sent to the second host 202 connected to the second uplink port 112 . In one embodiment, the first protocol includes Display Interface (DP) Alternatives to Agreements. For example, in the USB hub system shown in Figure 1, when the first protocol is the USB3. At the second uplink port 112 , the first bridge device 110 converts the first image data into the first protocol data and transmits it to the second host 202 connected to the second uplink port 112 . For example, in the USB hub system shown in Figure 1, when the first protocol is the USB3.0 protocol and the second protocol is the USB4.0 protocol, when the second host 202 is coupled to the second upstream with the second protocol port 112, and the selector 104 transmits the data with the first protocol to the first bridge device 110, and the first bridge device 110 converts the first image data into data of the second protocol and transmits the data The second host 202 connected to the second uplink port 112 .

In the above-mentioned USB hub system in FIG. 1, the data can be sequentially transmitted from the first host 200, the first uplink port 102, the selector 104, the first bridge device 110, and the second uplink port 112. To the second host 202, the data sent to the second host 202 can also be sequentially connected by the second host 202, the second uplink port 112, the first bridge device 110, the selector 104 and the first uplink The port 102 returns to the first host 200, or the second host 202, the second uplink port 112, the selector 104, and the first uplink port 102 send back to the first host 200 in sequence, and the second A host 200 transmits the data to the display device 204 connected to the at least one first downlink port 108 via the first uplink port 102 and the selector 104 to improve the usability of the USB hub system. The above-mentioned data sent to the second host 202 can be stored in the second host 202, and can also be displayed on the second host 202 with a display device. In a preferred embodiment, the above-mentioned data sent back to the first host 200 can also be stored in the first host 200, which is not limited herein.

Referring to FIG. 2, it shows a system block diagram of a hub device according to a second embodiment of the present invention. The universal serial bus (universal serial bus, USB) hub device 100b includes a first uplink Port 102, selector 104, at least one first downstream port 108, first bridge device 110, second upstream port 112, protocol controller 114, at least one second downstream port 116, and second bridge device 118 . Wherein the first upstream connection port 102, the selector 104, at least one first downstream connection port 108, the first bridge device 110 and the second upstream connection port 112 of the universal serial bus (universal serial bus, USB) hub device 100b Similar or identical to the first upstream port 102 , the selector 104 , at least one first downstream port 108 , the first bridge device 110 and the second upstream port 112 of the USB hub device 100 a. As the USB hub system shown in FIG. 2 , the USB hub system further includes a first host 200 , a second host 202 , a USB hub device 100 b , a display device 204 and peripheral devices 206 . The first host 200 and the second host 202 in FIG. 2 are used to transmit and receive the data between the first uplink port 110 and the second uplink port 112, just like the first host 200 and the second uplink port 112 described in FIG. 1 The second host 202 .

In this embodiment, the first upstream connection port 102, the second upstream connection port 104, and the at least one second downstream connection port 116 are, for example, C-type connectors supporting the USB protocol, and the at least one first downstream connection port The connection port 108 is, for example, a Display Port interface conforming to the VESA (Video Electronics Standards Association) standard.

As shown in the USB hub device 100b shown in FIG. 2 , the protocol controller 114 is coupled to the selector 106 and is suitable for transmitting and receiving the data of the second protocol. At least one second downstream connection port 116 is coupled to the protocol controller 114, and the protocol controller 114 is adapted to convert the data of the second protocol into a second image data and output to the at least one first downstream connection port 108 , or output the data of the second protocol to one of the at least one second downlink port 116 . The second bridge device 118 is coupled to the protocol controller 114, and the protocol controller 114 converts the data of the second protocol into the data of the first protocol and sends it to the second bridge device 118, or the protocol controller 114 Send the data of the second protocol to the second bridging device 118 . Wherein, the second uplink port 104 is coupled to the second bridge device 118 for transmitting and receiving the The data of the first protocol or the second protocol of the first bridge device 110 , or the data of the first protocol or the second protocol used to transmit the data of the second bridge device 118 .

For the USB hub device 100b shown in Figure 2, when the second protocol is the USB4.0 protocol, and the data is transmitted by the second protocol, the selector 106 transmits the data to the protocol controller 114, and the protocol The controller 114 converts the data into the data of the first protocol to the second bridge device 118 or transmits the data of the second protocol to the second bridge device 118, and then transmits it to the second uplink port 104 .

For the USB hub device 100b shown in FIG. 2, when the second protocol is the USB4.0 protocol, the data is transmitted by the second protocol, and the display device 204 is coupled to the first downstream connection port 108, the The selector 106 transmits the data to the protocol controller 114 , and the protocol controller 114 converts the data into the second image data, and outputs the data to the display device 204 through the at least one first downstream connection port 108 . Wherein, the first downlink port 108 coupled with the display device 204 is a Display Port interface conforming to the VESA (Video Electronics Standards Association) standard.

Furthermore, as shown in the USB hub device 100b shown in FIG. 2, when a display device 204 is coupled to the at least one first downstream connection port 108, the second image data is output to the at least one first downstream connection port 108. On the other hand, when the display device 204 is coupled to the second downstream port 116, such as a C-type connector supporting the USB protocol, and not coupled to the first downstream port 108, the protocol controller 116 The data of the second protocol is output to the at least one second downlink port 116 without output of the second image data. In a preferred embodiment, when the at least one first downlink port 108 is coupled to the display device 204 and the at least one second downlink port 116 is coupled to a peripheral device 206, the protocol control The device 114 will output the second image data to the display device 204 through the first downlink port 108, and will also output the data of the second protocol to the peripheral device 206 through the second downlink port 116, As shown in Figure 2.

In one embodiment, the protocol controller 114 is used to trigger the selector 106 so that the selector 104 is matched with the first downstream port 108 , the second upstream port 112 and the second downstream port 116 . In addition, the first host 200, the second host 202, the display device 204 and the peripheral device 206 all include a controller for controlling the first host 200, the second host 202, the display device 204 and the peripheral device 206 are respectively mated with the first uplink port 102 , the second uplink port 112 , the first downlink port 108 and the second downlink port 116 . In the embodiment shown in FIG. 1 and FIG. 2, the first upstream connection port 102, the second upstream connection port 104 and the at least one second downstream connection port 116 are C-type connectors supporting the USB protocol The at least one first downlink port 108 is, for example, a Display Port interface conforming to the VESA (Video Electronics Standards Association) standard.

In the above-mentioned USB hub system in FIG. 2 , the data can be sequentially transmitted from the first host 200 , the first uplink port 102 , the selector 104 , the first bridge device 110 and the second uplink port 112 To the second host 202, the data sent to the second host 202 can also be sequentially connected by the second host 202, the second uplink port 112, the first bridge device 110, the selector 104 and the first uplink The port 102 returns to the first host 200, or the second host 202, the second uplink port 112, the selector 104, and the first uplink port 102 send back to the first host 200 in sequence, and the second A host 200 transmits the data to the display device 204 connected to the at least one first downlink port 108 via the first uplink port 102 and the selector 104 to improve the usability of the USB hub system.

In addition, in the above-mentioned USB hub system of FIG. 2, the data is sequentially sent by the first host 200, the first upstream connection port 102, the selector 104, the protocol controller 114, the second bridge device 118 and the The second uplink port 112 transmits to the second host 202 . In another embodiment, the data is sequentially transmitted by the first host 200, the first uplink port 102, the selector 104, and the protocol controller 114. The data is sent to at least one first downstream connection port 108 and the second downstream connection port 116 to improve the usability of the USB hub system. The above-mentioned data sent to the second host 202 can be stored in the second host 202, and can also be displayed on the second host 202 with a display device. In a preferred embodiment, the above-mentioned data sent back to the first host 200 can also be stored in the first host 200, which is not limited herein.

In summary, the universal serial bus hub device and the hub system of the present invention use the selector, the protocol controller, the first bridging device and the second bridging device to connect the first host, the second host, the display device, and the Peripheral devices transmit data to improve the convenience of use of the hub device.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field of the present invention can make various modifications and changes without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the scope of the appended patent application.

100a: USB hub device

102: The first uplink port

104: selector

108: The first downlink port

109: Downlink port

110: first bridging device

112: Second uplink port

200: the first host

202: second host

204: display device

206: Peripheral device

Claims (14)

A universal serial bus (USB) hub device, comprising: a first uplink port for sending and receiving a data, the data is sent by a first protocol or a second protocol, the data transmitted by the first protocol The data includes a first image data; a selector coupled to the first uplink port; at least one first downlink port coupled to the selector and receiving the first image data; a first bridging device , coupled to the selector, used to receive the first image data, and convert the first image data into data of the first protocol or the second protocol for transmission; a protocol controller, coupled to the selector , for transmitting the data of the second protocol; a second uplink port, coupled to the first bridge device, for transmitting the first protocol or the second protocol from the first bridge device data; at least one second downlink port, coupled to the protocol controller, the protocol controller is adapted to convert the data of the second protocol into a second image data and output to the at least one first downlink port, or output the data of the second protocol to one of the at least one second downlink port; and a second bridging device coupled to the protocol controller, the protocol controller sends the data of the second protocol The data converted into the first protocol is transmitted to the second bridge device, or the protocol controller transmits the data of the second protocol to the second bridge device, wherein when the first protocol is the USB3.0 protocol, The second protocol is the USB4.0 protocol, and the data is transmitted by the first protocol, the selector transmits the first image data to the at least one first downstream connection port and the first bridge device, and the first The bridge device receives the first image data and converts the first image data into data of the first protocol or the second protocol and sends it to the second uplink port. Two uplink ports, the first bridging device converts the first image data into data of the first protocol and transmits to The second upstream port, when a device is coupled to the second upstream port with the second protocol, and the selector transmits the data to the first bridge device with the first protocol, the first bridge device converting the first image data into the data of the second protocol and sending the data to the second uplink port, the second uplink port is coupled to the second bridge device for transmitting the data of the first bridge device The data of the first protocol or the second protocol, or the data of the first protocol or the second protocol for transmitting and receiving the second bridge device. The USB hub device described in item 1 of the scope of the patent application, wherein the first bridge device converts the first image data into the communication protocol used by a device coupled to the second uplink port The data of the first protocol or the second protocol is sent to the second uplink port. The USB hub device described in item 1 of the scope of the patent application, wherein when the second protocol is the USB4.0 protocol, and the data is transmitted by the second protocol, the selector transmits the data to the protocol controller, and the The protocol controller converts the data into the data of the first protocol to the second bridge device or transmits the data of the second protocol to the second bridge device, and then transmits the data to the second uplink port. The USB hub device described in item 3 of the scope of the patent application, wherein when the second protocol is the USB4.0 protocol, and the data is transmitted by the second protocol, the selector transmits the data to the protocol controller, and the The protocol controller converts the data into the second image data and outputs the at least one first downlink port, or outputs the data of the second protocol to one of the at least one second downlink port. The USB hub device as described in item 4 of the scope of the patent application, wherein when a display device is coupled to the at least one first downstream port, the second image data is output to the at least one first downstream port port, when the display device is coupled to the at least one second downlink port, the protocol controller outputs the data of the second protocol to the at least one second downlink port. The USB hub device described in item 1 of the scope of the patent application, wherein the selector is a multiplexer. In the USB hub device described in item 1 of the scope of the patent application, the first protocol includes an alternate mode of the Display Port (DP) protocol. A universal serial bus (USB) hub system, comprising: a first host; a second host; a USB hub device, including: a first uplink port for transmitting and receiving a data from the first host, the The data is transmitted by a first protocol or a second protocol, and the data transmitted by the first protocol includes a first image data; a selector coupled to the first uplink port; at least one first downlink The connection port is coupled to the selector and receives the first image data; a first bridge device is coupled to the selector to receive the first image data and convert the first image data into the first protocol or the data of the second protocol for transmission; a protocol controller, coupled to the selector, for transmitting and receiving the data of the second protocol; a second uplink port, coupled to the first bridging device and The second host is used to transmit the data of the first protocol or the second protocol from the first bridge device; at least one second downstream connection port is coupled to the protocol controller, and the protocol controller is suitable for converting the data of the second protocol into a second image data and exporting to the at least one first The display device connected to the downstream connection port, or output the data of the second protocol to one of the at least one second downstream connection port; and a second bridge device, coupled to the protocol controller, the protocol control The device converts the data of the second protocol into the data of the first protocol and transmits it to the second bridge device, or the protocol controller transmits the data of the second protocol to the second bridge device, the second The uplink port is coupled to the second bridging device, and is used to transmit the data of the first protocol or the second protocol of the first bridging device, or to transmit the first protocol or the second protocol of the second bridging device. The data of the second protocol; and a display device coupled to the at least one first downstream port for displaying the data, wherein when the first protocol is the USB3.0 protocol, and the first host uses the USB3.0 protocol The first protocol transmits the data, the selector transmits the first image data to the display device connected to the at least one first downlink port and the first bridge device, and the first bridge device receives the first image data at the same time And convert the first image data into data of the first protocol or the second protocol and send it to the second host connected to the second uplink port, when the second host is connected to the second host with the first protocol Two uplink ports, the first bridge device converts the first image data into data of the first protocol and sends it to the second host connected to the second uplink port, when the second protocol is the USB4.0 protocol , when the second host is coupled to the second uplink port with the second protocol, and the selector transmits the data to the first bridge device with the first protocol, the first bridge device The image data is converted into the data of the second protocol and the data is sent to the second host connected to the second uplink port. The USB hub system as described in item 8 of the scope of the patent application, wherein the first bridging device is based on the communication protocol used by a device coupled to the second upstream connection port to use the first bridging device. The image data is converted into data of the first protocol or the second protocol, and sent to the second host connected to the second uplink port. The USB hub system described in item 9 of the scope of the patent application, wherein when the second protocol is the USB4.0 protocol, and the data is transmitted by the second protocol, the selector transmits the data to the protocol controller, and the The protocol controller converts the data into the data of the first protocol to the second bridge device or transmits the data of the second protocol to the second bridge device, and then transmits the data to the second uplink port. The USB hub system described in item 9 of the scope of the patent application, wherein when the second protocol is the USB4.0 protocol, and the data is transmitted by the second protocol, the selector transmits the data to the protocol controller, and the The protocol controller converts the data into the second image data and outputs the display device connected to the at least one first downlink port, or outputs the data of the second protocol to the at least one second downlink port. one. The USB hub system described in item 11 of the scope of the patent application, wherein when the display device is coupled to the at least one first downstream connection port, the second image data is output to the at least one first downstream connection port, and when the display device is coupled to the at least one first downstream connection port, The display device is coupled to the at least one second downlink port, and the protocol controller outputs the data of the second protocol to the at least one second downlink port. The USB hub system described in item 8 of the scope of the patent application, wherein the selector is a multiplexer. In the USB hub system described in claim 8 of the patent application, the first protocol includes an alternate mode of the Display Port (DP) protocol.

Images