CN214098416U - data transmission device - Google Patents

Abstract

A data transmission device is provided with a first slot, a second slot and a controller, wherein the first slot is used for a data providing device to be connected in a pluggable mode and is provided with a sideband use pin, and the second slot is used for a data receiving device to be connected in a pluggable mode and is provided with an auxiliary pin; the controller is respectively connected with the sideband using pin and the auxiliary pin; when the auxiliary pin receives a first response signal transmitted by the data receiving device, the controller transmits a second response signal to the sideband using pin according to the first response signal and the setting signal. The utility model discloses can make data receiver's response signal judge and convey to the data providing device again after the conversion via the controller, make the data providing device can convey DP signal to data receiver that the current line way mode can support the formation of image, avoid the unable enough formation of image data of receipt of data receiver with the situation of normal display frame.

Description

data transmission device

technical field

The utility model relates to a data transmission device, in particular to a data transmission device with sideband use (SBU) pins and auxiliary (Auxiliary, AUX) pins.

Background technique

Nowadays, Universal serial bus type-C (USB Type-C) connectors are becoming more and more popular in the market of mobile and personal devices. USB Type-C is a USB specification with no positive or negative. It has a fast transmission rate and can realize the application scenarios of data transmission, audio and video transmission and power transmission with a single cable. In addition, the USB Developer Forum has also proposed an alternate mode in the Type-C standard, which enables image transmission technology to be implemented in the USB Type-C cable. In 2014, the Video Electronics Standards Association released the DisplayPort (DP) alternative mode standard for USB Type-C, allowing DP signals to be transmitted over USB Type-C. The DP alternative mode redesignates the original USB line of USB Type-C as the DP line, and also standardizes the sideband use (SBU) line of USB Type-C as the auxiliary (Auxiliary, AUX) line of DP. to transfer data.

When a personal device that supports the DP alternative mode of USB Type-C wants to transmit DP signals to the DP display, the personal device and the display will be connected through the link training program, and the display will transmit the line configuration through the AUX channel. The data is sent to the personal device, and the personal device transmits the relevant DP signal to the display according to the configuration data of the display. However, in the data transmission device currently applicable to the DP alternative mode of USB Type-C, the SBU pin of the personal device is directly connected to the AUX line of the display. The setting of channel configuration still provides 4-lane channel configuration data, so the personal device will provide DP signal for 4-lane imaging, but in 2-lane configuration mode, only 2-lane DP signal can be transmitted to the display, resulting in The monitor cannot display the picture.

Utility model content

The utility model provides a data transmission device for intercepting a first response signal from a data receiving device, and transmitting a second response signal to a data providing device according to the first response signal and a setting signal.

According to a data transmission device of an embodiment of the present invention, the data transmission device has a first slot, a second slot, and a controller, wherein the first slot is used for pluggable connection of the data providing device, and has an edge. A sideband use (SBU) pin is provided, and the second slot is used for pluggable connection of a data receiving device, and has an auxiliary (Auxiliary, AUX) pin. The controllers are respectively connected to the SBU pin and the AUX pin. When the AUX pin receives a first response signal sent by the data receiving device, the controller will send a second response signal to the SBU pin according to the first response signal and a setting signal.

According to the data transmission device of another embodiment of the present invention, the first slot of the data transmission device further has a plurality of first differential pins, the second slot further has a plurality of second differential pins, and the The data transmission device includes a plurality of switching elements. Each of the first differential pins is used to transmit a Universal Serial Bus (USB) signal or a DisplayPort (DP) signal, and each second differential pin corresponds to the plurality of first differential pins One of the differential pins is used for receiving the DP signal from the corresponding first differential pin. Each switch element has a first terminal, a second terminal and a control terminal. The first end of each switch element is connected to one of the plurality of first differential pins, the second end of each switch element is connected to one of the plurality of second differential pins, and each switch The control end of the element is connected to the controller. The controller turns on some of the switching elements according to the setting signal.

According to a data transmission device of another embodiment of the present invention, the data transmission device includes a first slot, a second slot and a controller, wherein the controller is connected to the first slot and the second slot respectively. The first slot is used for pluggable connection of the data providing device. The second slot is used for pluggable connection of the data receiving device. The controller selectively outputs the imaging data input from the first slot from the second slot according to the line configuration corresponding to the response signal provided by the data receiving device or the line configuration corresponding to a setting signal, So that the data providing device transmits the imaging data to the data receiving device.

In other words, the present invention provides a data transmission device, comprising:

a first slot for pluggable connection of a data providing device, the first slot includes a pin for a side band;

a second slot for pluggably connecting a data receiving device, the second slot including an auxiliary pin; and

a controller, respectively connected to the sideband use pin and the auxiliary pin, wherein when the auxiliary pin receives a first response signal sent by the data receiving device, the controller according to the first response signal and A setting signal transmits a second response signal to the sideband using pin.

Preferably, the data transmission device further comprises:

a plurality of first differential pins disposed in the first slot for transmitting a universal serial bus signal or a display port signal respectively;

a plurality of second differential pins disposed in the second slot for respectively receiving the DisplayPort signal and corresponding to the plurality of first differential pins respectively; and

a plurality of switch elements, each of the plurality of switch elements has a first end, a second end and a control end, the first end of each of the plurality of switch elements is respectively connected to the plurality of first differential pins one of the plurality of switch elements, the second end of each of the plurality of switch elements is respectively connected to one of the plurality of second differential pins, the control end of each of the plurality of switch elements is connected to the controller, The controller turns on the plurality of switching elements of the portion according to the setting signal.

Preferably, the data transmission device further comprises:

A switch is connected to the controller for generating the setting signal.

Preferably, when the switch generates a new setting signal, the auxiliary pin receives a new first response signal.

Preferably, the first response signal includes a first line number and the setting signal includes a second line number. When the controller determines that the first line number is greater than the second line number, the second response The signal includes the second line number. When the controller determines that the first line number is not greater than the second line number, the second response signal includes the first line number.

The utility model also provides a data transmission device, comprising:

a first slot for pluggable connection of a data providing device;

a second slot for pluggably connecting a data receiving device; and

a controller, respectively connected to the first slot and the second slot, the controller selectively according to a line configuration corresponding to a response signal provided by the data receiving device or a line corresponding to a setting signal A channel configuration, an imaging data input from the first slot is output from the second slot, so that the data providing device transmits the imaging data to the data receiving device.

Preferably, the first slot includes a sideband using pin, the sideband using pin is connected to the controller and used for receiving an inquiry signal from the data providing device, the second slot includes an auxiliary pin, The auxiliary pin is connected to the controller and is used for transmitting the inquiry signal to the data receiving device, and the response signal represents the response of the data receiving device to the inquiry signal.

Preferably, the line configuration corresponding to the setting signal is determined according to the number of lines used by the data providing device to transmit the imaging data.

Preferably, the data transmission device further includes a switch connected to the controller for determining the line configuration corresponding to the setting signal according to an external selection command.

Preferably, the response signal includes a first line number and the setting signal includes a second line number. When the controller determines that the first line number is greater than the second line number, the controller The imaging data input from the first slot is output from the second slot with the second number of lanes, and when the controller determines that the number of the first lanes is not greater than the number of the second lanes, the controller according to the The imaging data input from the first slot is output from the second slot by the first number of lanes.

With the above structure, the data transmission device disclosed in the present invention can make the response signal of the data receiving device judged and converted by the controller and then transmitted to the data providing device, so that the data providing device can transmit the imaging supported by the current channel mode. The DP signal is sent to the data receiving device to avoid the situation that the data receiving device cannot receive enough imaging data to display the screen normally.

The above description of the content of the present invention and the description of the following embodiments are used to demonstrate and explain the spirit and principle of the present invention, and provide further explanations for the protection scope of the present invention.

Description of drawings

FIG. 1 is a schematic diagram of a usage environment of a data transmission device according to an embodiment of the present invention.

FIG. 2 is a schematic circuit diagram of a data transmission device according to an embodiment of the present invention.

3 is a flowchart of a method for determining the number of lines of a data transmission device according to an embodiment of the present invention.

4A is a schematic circuit diagram of a data transmission device according to another embodiment of the present invention.

4B is a schematic diagram of a circuit state of a data transmission device according to an embodiment of the present invention.

4C is a schematic diagram of a circuit state of a data transmission device according to an embodiment of the present invention.

[Description of reference numerals]

10 Data transmission device

20 Data provider

30 Data receiving device

C1 Universal Serial Bus Type-C Cable

C2 display port cable

100 first slot

200 second slot

300 controllers

303 Multiplexer

400 switcher

101 SBU pin

201 AUX pin

103a～103d The first differential pin

203a～203d Second differential pin

303a～303c Switching element

Detailed ways

The detailed features and advantages of the present invention are described in detail in the following embodiments, and the content is sufficient to enable those skilled in the art to understand the technical content of the present invention and implement accordingly, and according to the contents disclosed in this specification, protection scope and appendix Figures, those of ordinary skill in the art can easily understand the related objects and advantages of the present invention. The following examples further illustrate the viewpoints of the present invention in detail, but do not limit the scope of the present invention from any viewpoint.

Please refer to FIG. 1 , which is a schematic diagram of a usage environment of a data transmission device according to an embodiment of the present invention. As shown in FIG. 1 , the data transmission device 10 is connected to the data providing device 20 through a universal serial bus type-C (USB Type-C) cable C1 and is connected to the data providing device 20 through a display port (DisplayPort, DP) ) cable C2 is connected to the data receiving device 30 . The data transmission device 10 has a controller 300, and the USB Type-C cable C1 includes a sideband use (SBU) line, and the DP cable C2 includes an auxiliary (Auxiliary, AUX) line. The SBU line and the AUX line are connected to the controller 300. Therefore, when the data receiving device 30 transmits the first response signal related to the line configuration data through the AUX line, the controller 300 receives the first response signal and performs After processing, the second response signal is sent to the data providing device 20 through the SBU line, so that the data providing device 20 can transmit the imaging data to the data receiving device 30 according to the line configuration data contained in the second response signal. In one embodiment, the data transmission device 10 further has a multiplexer 303 , and the multiplexer 303 conducts part of the USB Type-C cable C1 and part of the DP cable C2 respectively according to a setting signal of the controller 300 , Enables part of the USB Type-C cable C1 to transmit DP signals to part of the DP cable C2, where the DP signals contain imaging data.

Please refer to FIG. 2 , which is a schematic circuit diagram of a data transmission device according to an embodiment of the present invention. The data transmission device 10 has a first slot 100 , a second slot 200 and a controller 300 . The first slot 100 has an SBU pin 101 , and the second slot 200 has an AUX pin 201 . The controller 300 is connected to the first socket 100 and the second socket 200 respectively. Specifically, the controller 300 can be connected to the SBU pin 101 and the AUX pin 201 respectively.

The first socket 100 is, for example, a USB Type-C socket, wherein USB is a serial port bus standard for connecting a computer system and an external device. The first slot 100 is used for pluggable connection of the data providing device 20, wherein the data providing device 20 is, for example, a computer, tablet or other data providing device with a USB Type-C interface, which is not limited in the present invention. Further, in addition to the above-mentioned SBU pins 101, the first socket 100 may further include a plurality of first differential pins 103a-103d, and the first socket 100 can pass through the SBU pins and the first differential pins 103a. ˜103d is pluggably connected to the data providing device 20, and each of the first differential pins 103a˜103d can be used to transmit USB signals or DP signals. The second socket 200 is, for example, a DP socket, where DP is a digital video interface standard promoted by the Video Electronics Standard Association (VESA). The second slot 200 is used for pluggably connecting the data receiving device 30, wherein the data receiving device 30 is, for example, a display having a DP interface. Further, in addition to the above-mentioned AUX pin 201, the second socket 200 may further include a plurality of second differential pins 203a-203d, and the second socket 200 can pass through the AUX pin 201 and the second differential pin 203a-203d are pluggably connected to the data receiving device 30, and the second differential pins 203a-203d can be used for receiving DP signals.

The controller 300 is, for example, a Power Delivery Controller (PDController), which can control the number of lines used to transmit imaging data between the first slot 100 and the second slot 200 . The controller 300 can selectively transfer the imaging data input from the first socket 100 to the second socket according to the line configuration corresponding to the response signal provided by the data receiving device 30 or the line configuration corresponding to a setting signal. The slot 200 outputs so that the data providing apparatus 20 transmits the imaging data to the data receiving apparatus 30 .

In one embodiment, the data providing device 20 can first send an inquiry signal to the AUX pin 201 of the second slot 200 through the SBU pin 101 of the first slot 100 to inquire that the data receiving device 30 can receive the DP signal (image data). ), then the data receiving device 30 can reply the first response signal through the AUX pin 201. The first response signal represents the response of the data receiving device 30 to the query signal sent by the data providing device 20. In other words, the first response signal may include the number of lines that the data receiving device 30 can receive the DP signal (the following Called the number of first lines). The controller 300 intercepts the first response signal, and transmits the second response signal to data through the SBU pin 101 according to the first response signal and the setting signal stored in the internal memory or external memory of the controller 300 The providing device 20 enables the data providing device 20 to transmit the imaging data to the data receiving device 30 according to the second response signal.

The setting signal includes the number of one line (hereinafter referred to as the number of the second line). In one embodiment, the second number of lanes may be related to the lane configuration of the data transmission device 10 . Further, the second line number may indicate the number of lines formed by the first differential pin and the second differential pin being connected to each other. In the configuration shown in Figure 2, the number of the second lanes is two. In another embodiment, the controller 300 may inquire in advance the number of lanes that the data providing device 20 wants to send the DP signal to, and set the number of lanes that the data providing device 20 responds to as the second number of lanes.

The second response signal also includes the number of one channel. Further, the controller 300 can compare the number of the first lines included in the first response signal with the number of the second lines included in the setting signal, and determine the number of lines included in the second response signal according to the comparison result . Please refer to FIG. 2 and FIG. 3 together. FIG. 3 is a flowchart of a method for determining the number of lanes of a data transmission device according to an embodiment of the present invention. In step S1, the controller 300 obtains the first line number included in the first response signal and the second line number included in the setting signal. In step S2, the controller 300 determines whether the number of the first lines is greater than the number of the second lines. When the controller 300 determines that the first line number is greater than the second line number, the controller 300 executes step S3 to make the second response signal include the second line number. On the other hand, when the controller 300 determines that the number of the first lines is not greater than the number of the second lines, the controller 300 executes step S4 to make the second response signal include the number of the first lines. For example, it is assumed that the number of lines of the setting signal of the controller 300 is two. When the number of lines of the first response signal responded by the data receiving device 30 is 4, the controller 300 will intercept the first response signal and transmit the second response signal with the number of lines is 2 to the data providing device 20; and when the first response signal is 2 When the number of lines of a response signal is 1, the controller 300 can directly transmit the first response signal as the second response signal to the data providing device 20 .

To sum up, when the number of lines included in the first response signal is greater than the number of lines included in the setting signal, the data transmission device 10 transmits the number of lines included in the setting signal to the data providing device 20; and When the number of lines included in the first response signal is not greater than the number of lines included in the setting signal, the data transmission device 10 transmits the number of lines included in the first response signal to the data providing device 20 . According to the above-mentioned rule for determining the number of lines, the data receiving device 30 can prevent the data receiving device 30 from sending the number of lines not supported by the data transmitting device 10 to the data providing device 20, so that the DP signal generated by the data providing device 20 cannot be completely transmitted to the data receiving device. 30 questions.

The embodiment shown in FIG. 2 is used for illustration, wherein four of the first differential pins 103a-103d and the second differential pins 203a-203d are respectively connected to the data providing device 20 and the data receiving device 30, but only The first differential pins 103c and 103d and the second differential pins 203c and 203d respectively form two connecting lines. In this implementation situation, the data receiving device 30 has no way of knowing the internal wiring configuration of the data transmitting device 10, and will provide the first response signal with the number of wirings being 4 according to the number of the connected differential pins.

For traditional data transmission devices, the SBU pin is directly connected to the AUX pin, so the data receiving device can directly reply to the data providing device through the AUX pin and the SBU pin and can receive 4-lane DP signals. Send the DP signal imaged with 4 lanes (that is, it needs to receive the DP signal from the 4 lanes respectively to be able to image normally). However, the data providing device can only transmit 2-lane DP signals to the data receiving device, so that the data receiving device cannot receive the remaining 2-lane DP signals, so it cannot receive enough imaging data to display the screen normally. In the present invention, the first response signal from the data providing device can be filtered by the design of disposing the controller between the SBU pin and the AUX pin, and the aforementioned method for determining the number of lines of the controller, thereby avoiding the above-mentioned traditional Problems faced by data transmission devices.

The present invention also provides another data transmission device. Please refer to FIGS. 4A to 4C . FIG. 4A is a schematic circuit diagram of the data transmission device according to an embodiment of the present invention. 4B to 4C are schematic diagrams of circuit states of a data transmission device according to an embodiment of the present invention. The data transmission device 10 shown in FIGS. 4A to 4C has the same first slot 100 , the second slot 200 , a plurality of pins in the two slots, and the controller 300 which are the same as the data transmission device 10 shown in FIG. 2 . , the controller 300 can transmit the second response signal to the data providing device 20 according to the first response signal provided by the data receiving device 30 and the setting signal stored in the internal memory of the controller 300 or the external memory, so that the data providing device 20 The imaging data can be transmitted to the data receiving device 30 according to the second response signal. The detailed operation and functions of other components are as described in the previous embodiments, which will not be repeated here. In addition to the data transmission device 10 shown in FIG. 2 , the data transmission device 10 shown in FIGS. 4A to 4C further includes a multiplexer 303 , wherein the multiplexer 303 includes a plurality of switching elements 303 a to 303 c. In one embodiment, when the controller 300 provides the second response signal to the data providing device 20 according to the first response signal and the setting signal as described above, the controller 300 turns on some of the switching elements 303a-303c according to the setting signal, So that the DP signal can be transmitted to the corresponding part of the second differential pins 203a-203c through the corresponding part of the first differential pins 103a-103c, wherein the number of the switched elements to be turned on is set by the line included in the signal quantity. In the embodiment shown in FIGS. 4A to 4C , the first differential pins 103a to 103d may be a first high-speed transmitter (TX1) pin, a first high-speed receiver (RX1) pin, and a second high-speed transmitter, respectively. (TX2) pin, and the second high-speed receiver (RX2) pin. The second differential pins 203a-203d may be the lane 3 (Lane 3) pin, the lane 2 (Lane 2) pin, the lane 1 (Lane 1) pin, and the lane 0 (Lane 0) pin respectively foot position. The third pin of the line (the second differential pin 203a) corresponds to the pin of the first high-speed transmitter (the first differential pin 103a), and the second pin of the line (the second differential pin 203b) corresponds to the first pin of the high-speed transmitter (the first differential pin 103a). A high-speed receiver pin (first differential pin 103b), a track pin (second differential pin 203c) corresponding to the second high-speed transmitter pin (first differential pin 103c), and The line zero pin (the second differential pin 203d) is connected to the second high-speed receiver pin (the first differential pin 103d). The switching elements 303a-303c are respectively a first switching element 303a, a second switching element 303b, and a third switching element 303c. The two ends of the first switch element 303a are respectively connected to the first high-speed transmitter pin (the first differential pin 103a) and the line tripod (the second differential pin 203a), and the two ends of the second switch element 303b are respectively connected Connected to the first high-speed receiver pin (the first differential pin 103b) and the line two pins (the second differential pin 203b), and the third switch element 303c is respectively connected to the second high-speed transmitter pin ( The first differential pin 103c) and the line path one pin (the second differential pin 203c).

In one embodiment, the data transmission device 10 has a switch 400 , and the switch 400 is connected to the controller 300 for generating and transmitting the setting signal to the controller 300 . The switch 400 can determine the line configuration corresponding to the setting signal according to the external selection command. For example, the switch 400 can be a knob, a button, a multi-stage switch, or other devices that can switch multiple modes to determine the line configuration corresponding to the set signal, which is not limited by the present invention. In one embodiment, the switch 400 can have three modes, which are a 1-lane mode, a 2-lane mode, and a 4-lane mode, respectively. When the user selects the 1-lane mode, the switch 400 will generate a setting signal with the number of lanes 1; when the user selects the 2-lane mode, the switch 400 will generate a setting signal with the number of lanes 2; When the 4-lane mode is selected, the switch 400 will generate a setting signal with four lanes. The present invention does not limit the modes that the switch has. In one embodiment, when the user switches the mode through the switch 400, the switch 400 will generate a new setting signal, so that the data providing device 20 can re-send the signal to the AUX pin 201 through the SBU pin 101 for querying The data receiving device 30 can receive the number of lines of the DP signal. Specifically, when the controller 300 receives a new setting signal from the switch 400, the controller 300 notifies the data providing device 20 through the SBU pin, and the data providing device 20 sends out a new query signal accordingly To inquire the data receiving device 30 for the number of lines that can receive the DP signal.

In the embodiment of FIG. 4A , when the controller 300 receives the setting signal with the number of lines being 1 and the controller 300 transmits the second response signal to the data providing device according to the first response signal and the setting signal as described above At 20:00, the first switching element 303a, the second switching element 303b, and the third switching element 303c are all off, and the data providing device 20 will pass the second high-speed receiving pin (the first differential pin 103d) and the line zero The line formed by the pin (the second differential pin 203 d ) transmits the DP signal to the data receiving device 30 .

In the embodiment of FIG. 4B , when the controller 300 receives the setting signal with the number of lines being 2 and the controller 300 transmits the second response signal to the data providing device according to the first response signal and the setting signal as described above At 20:00, the controller 300 will turn on the third switch element 303c, while the first switch element 303a and the second switch element 303b are in the off state, and the data providing device 20 will pass the second high-speed transmitter pin (the first differential pin Bit 103c) and the track 1 pin (the second differential pin 203c), and the second high-speed receiver pin (the first differential pin 103d) and the track zero pin (the second differential pin 103d) The line formed by the differential pin 203d) transmits the DP signal to the data receiving device 30.

In the embodiment of FIG. 4C , when the controller 300 receives the setting signal with the number of lines being 4 and the controller 300 transmits the second response signal to the data providing device according to the first response signal and the setting signal as described above At 20:00, the controller 300 will turn on the first switching element 303a, the second switching element 303b and the third switching element 303c, and the data providing device 20 will communicate with the first high-speed transmitter pin (the first differential pin 103a) The line composed of the three-pin line (the second differential pin 203a), the first high-speed receiver pin (the first differential pin 103b) and the two-pin line (the second differential pin 203b) The formed track, the second high-speed transmitter pin (the first differential pin 103c) and the track formed by one pin (the second differential pin 203c), and the second high-speed receiver pin The track formed by the bit (the first differential pin 103 d ) and the track zero pin (the second differential pin 203 d ) is used to transmit the DP signal to the data receiving device 30 .

With the above structure, in the data transmission device disclosed by the present invention, by connecting the SBU pin and the AUX pin through the controller, the response signal of the data receiving device can be judged and converted by the controller and then transmitted to the data provider. The device enables the data providing device to transmit the DP signal capable of imaging supported by the current channel mode to the data receiving device, so as to avoid the situation that the data receiving device cannot receive enough imaging data to display the picture normally.

Claims (10)

1. a data transmission device, is characterized in that, comprises: a first slot for pluggable connection of a data providing device, the first slot includes a pin for a side band; a second slot for pluggably connecting a data receiving device, the second slot including an auxiliary pin; and a controller, respectively connected to the sideband use pin and the auxiliary pin, wherein when the auxiliary pin receives a first response signal sent by the data receiving device, the controller according to the first response signal and A setting signal transmits a second response signal to the sideband using pin. 2. The data transmission device of claim 1, further comprising: a plurality of first differential pins disposed in the first slot for transmitting a universal serial bus signal or a display port signal respectively; a plurality of second differential pins disposed in the second slot for respectively receiving the DisplayPort signal and corresponding to the plurality of first differential pins respectively; and a plurality of switch elements, each of the plurality of switch elements has a first end, a second end and a control end, the first end of each of the plurality of switch elements is respectively connected to the plurality of first differential pins one of the plurality of switch elements, the second end of each of the plurality of switch elements is respectively connected to one of the plurality of second differential pins, the control end of each of the plurality of switch elements is connected to the controller, The controller turns on the plurality of switching elements of the portion according to the setting signal. 3. The data transmission device of claim 1, further comprising: A switch is connected to the controller for generating the setting signal. 4. The data transmission device of claim 3, wherein when the switch generates a new setting signal, the auxiliary pin receives a new first response signal. 5 . The data transmission device of claim 1 , wherein the first response signal includes a first line number and the setting signal includes a second line number, when the controller determines that the first line When the number of lanes is greater than the number of the second lanes, the second response signal includes the number of the second lanes, and when the controller determines that the number of the first lanes is not greater than the number of the second lanes, the second response signal includes the number of the second lanes Number of lanes. 6. A data transmission device, characterized in that, comprising: a first slot for pluggable connection of a data providing device; a second slot for pluggably connecting a data receiving device; and a controller, respectively connected to the first slot and the second slot, the controller selectively according to a line configuration corresponding to a response signal provided by the data receiving device or a line corresponding to a setting signal A channel configuration, an imaging data input from the first slot is output from the second slot, so that the data providing device transmits the imaging data to the data receiving device. 7 . The data transmission device of claim 6 , wherein the first slot comprises a sideband use pin, and the sideband use pin is connected to the controller and used for receiving a data from the data providing device. 8 . an inquiry signal, the second slot includes an auxiliary pin, the auxiliary pin is connected to the controller and used to transmit the inquiry signal to the data receiving device, and the response signal indicates that the data receiving device has the inquiry signal the response to. 8 . The data transmission device of claim 6 , wherein the line configuration corresponding to the setting signal is determined according to the number of lines used by the data providing device to transmit the imaging data. 9 . 9 . The data transmission device of claim 6 , further comprising a switch connected to the controller for determining the line configuration corresponding to the setting signal according to an external selection command. 10 . 10. The data transmission device of claim 6, wherein the response signal includes a first line number and the setting signal includes a second line number, when the controller determines the first line number When the number is greater than the second line number, the controller outputs the imaging data input from the first slot from the second slot according to the second line number, and when the controller determines the first line number When not greater than the second line number, the controller outputs the imaging data input from the first slot from the second slot according to the first line number.

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