A USB signal long-distance transmission device

Abstract

The present invention discloses a USB signal long-distance transmission device, which includes a device body, a connector, a first data driving module and a power module on the device body; the number of connectors is two, and the two connectors are respectively used to electrically connect with the intelligent device host and the communicated device; the connector includes a USB3.2 signal input end and a USB3.2 signal output end, and the control module is used to control the gain of the equalization module and the flat gain module, so that the equalization module performs equalization processing on the USB3.2 input signal input from the USB3.2 signal input end, so that the flat gain module performs flat gain processing on the USB3.2 output signal, and the USB3.2 signal output end is used to output the USB3.2 output signal after the flat gain processing; the power module is used to supply power to the control module, the equalization module and the flat gain module. By adopting the above scheme, the problem of how to further increase the communication distance of USB3.2 is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle accessories, and in particular to a USB signal long-distance transmission device. Background Art

[0002] With the advancement of automobile intelligence, the integration of intelligent devices in automobiles is a sign of automobile intelligence. The intelligence of automobiles undoubtedly puts forward the demand for high data bandwidth transmission. At present, there is a demand for USB3.2 data transmission in smart cars. The application of USB3.2 in automobiles is mainly used to transmit large-capacity data. Due to its large amount of data transmission and high transmission rate, the length of the USB3.2 harness is required. The specification points out that the nominal cable length of USB3.2gen1 is less than 2 meters, and the nominal length of USB3.2 gen2 is less than 1 meter. The interface of the connector supporting USB3.2 is generally placed in the center console armrest. The interface of the connector for transmitting USB3.2 signals of the host of the smart device in the car is about 1 to 2 meters away from the center console armrest according to the different layouts in the car. If the USB3.2 gen1 protocol is adopted, there is basically no harness on the communication device (such as entertainment equipment, including but not limited to mobile phones, VR glasses, etc.). If the USB3.2 gen2 protocol is adopted, the communication device cannot communicate due to too long wiring.

[0003] To meet the high-speed and long-distance communication requirements of USB, such as Figure 1 As shown, the existing solution adds a processing chip 40 before the connector 2 of the smart device host 20 in the car. The processing chip 40 is a redriverIC, which pre-processes the USB high-speed signal to increase the USB communication distance, but the distance is limited. Through actual measurement, it is found that adding a redriverIC can increase the USB3.2 gen1 by 2 meters and the USB3.2 gen2 by 1 meter on the basis of the original without adding the redriverIC. If USB3.2 gen1 is used to transmit data, the communication distance of 4 meters basically meets the needs of the front passengers to use the communicated device 30 (such as entertainment equipment, including but not limited to mobile phones, VR glasses, etc.). If USB3.2 gen2 is used to transmit data, the communication distance of 2 meters is limited to the range of the front passengers to use entertainment equipment. Therefore, how to further increase the communication distance of USB3.2 is a problem to be solved. Summary of the invention

[0004] The invention provides a USB signal long-distance transmission device to solve the problem of how to further increase the communication distance of USB3.2.

[0005] According to one aspect of the present invention, there is provided a USB signal long-distance transmission device, the USB signal long-distance transmission device comprising a device body, the device body being provided with a connector, a first data driving module and a power supply module;

[0006] There are two connectors, and the two connectors are used to electrically connect to the smart device host and the communicated device respectively;

[0007] The connector includes a USB3.2 signal input terminal and a USB3.2 signal output terminal, the first data driving module includes a control module, a balancing module and a flat gain module, the input terminal of the balancing module is electrically connected to the USB3.2 signal input terminal of one of the connectors, the output terminal of the balancing module is electrically connected to the input terminal of the flat gain module, and the output terminal of the flat gain module is electrically connected to the USB3.2 signal output terminal of another of the connectors;

[0008] The control module is used to control the gains of the equalization module and the flat gain module, so that the equalization module performs equalization processing on the USB3.2 input signal input from the USB3.2 signal input end, so that the flat gain module performs flat gain processing on the USB3.2 output signal, and the USB3.2 signal output end is used to output the USB3.2 output signal after the flat gain processing;

[0009] The output end of the power supply module is electrically connected to the control module, the equalization module and the flat gain module, and is used to supply power to the control module, the equalization module and the flat gain module.

[0010] In an optional embodiment of the present invention, the USB signal long-distance transmission device further includes a data receiving shaping configuration module, the data receiving shaping configuration module has a plurality of input configuration levels, and different input configuration levels correspond to different gains; the data receiving shaping configuration module is electrically connected to the input configuration end of the control module, and the control module is used to adjust the gain of the equalization module based on the input configuration level;

[0011] And / or, the USB signal long-distance transmission device also includes a data sending preprocessing configuration module, the data sending preprocessing configuration module has a plurality of output configuration levels, and different output configuration levels correspond to different gains; the data sending preprocessing configuration module is electrically connected to the output configuration end of the control module, and the control module is used to adjust the gain of the flat gain module based on the output configuration level.

[0012] In an optional embodiment of the present invention, the data receiving shaping configuration module includes a first pull-up resistor bit and a first pull-down resistor bit, the first pull-up resistor bit can be configured to connect to a first pull-up resistor, the first pull-down resistor bit can be configured to connect to a first pull-down resistor, and the first pull-up resistor bit and the first pull-down resistor bit are connected in series between the output end of the power module and the ground;

[0013] The input configuration terminal of the control module is electrically connected between the first pull-up resistor position and the first pull-down resistor position;

[0014] There is one input configuration level corresponding to the first pull-up resistor being not configured and the first pull-down resistor being configured to a first resistance value;

[0015] There is one input configuration level corresponding to which neither the first pull-up resistor nor the first pull-down resistor is configured;

[0016] There is one input configuration level corresponding to the first pull-up resistor being not configured and the first pull-down resistor being configured to a second resistance value;

[0017] There is an input configuration level corresponding to the first pull-up resistor being configured to the second resistance value and the first pull-down resistor being not configured.

[0018] In an optional embodiment of the present invention, the data transmission preprocessing configuration module includes a second pull-up resistor bit and a second pull-down resistor bit, the second pull-up resistor bit can be configured to connect to a second pull-up resistor, the second pull-down resistor bit can be configured to connect to a second pull-down resistor, the second pull-up resistor bit and the second pull-down resistor bit are connected in series between the output end of the power module and the ground, and the output configuration end of the control module is electrically connected between the second pull-up resistor bit and the second pull-down resistor bit;

[0019] There is one output configuration level corresponding to the second pull-up resistor being not configured and the second pull-down resistor being configured to the first resistance value;

[0020] There is one output configuration level corresponding to which neither the second pull-up resistor nor the second pull-down resistor is configured;

[0021] There is one output configuration level corresponding to the second pull-up resistor being not configured and the second pull-down resistor being configured to a second resistance value;

[0022] There is an output configuration level corresponding to the second pull-up resistor being configured to the second resistance value and the second pull-down resistor being not configured.

[0023] In an optional embodiment of the present invention, the first data driving module further includes an output buffer module, and the output buffer module is electrically connected between the flat gain module and the connector;

[0024] The output buffer module is used to buffer the USB3.2 output signal.

[0025] In an optional embodiment of the present invention, the USB signal long-distance transmission device further includes at least one of the following:

[0026] an isolation module, the isolation module being disposed between the connector and the first data driving module for isolation;

[0027] A protection module is electrically connected to the connector for electrostatic protection.

[0028] In an optional embodiment of the present invention, the isolation module includes a capacitor;

[0029] And / or, the protection module includes a TVS diode, and the TVS diode is electrically connected between the connector and the ground.

[0030] In an optional embodiment of the present invention, the USB signal long-distance transmission device further comprises a circuit board, the first data driving module and the power supply module are both arranged on the circuit board, and the two connectors are both fixedly connected to the circuit board;

[0031] The device body includes a shell and a fixing assembly, the circuit board is located inside the shell, the shell includes a first half shell and a second half shell, the first half shell and the second half shell are used to be interlocked to form the shell, and the fixing assembly is used to relatively fix the first half shell and the second half shell when the first half shell and the second half shell are interlocked.

[0032] In an optional embodiment of the present invention, the fastening assembly includes a fastening block and a fastening sheet, the fastening sheet is arranged on the side wall of the first half shell, and the fastening sheet is provided with a fastening opening;

[0033] The fixing block is arranged on the side wall of the second half shell, the fixing block has an inclined surface, and is used to pass through the fixing opening when the first half shell and the second half shell are buckled with each other, so as to relatively fix the first half shell and the second half shell.

[0034] In an optional embodiment of the present invention, the connector further includes a USB2.0 signal input terminal and a USB2.0 signal output terminal;

[0035] The USB signal long-distance transmission device further comprises a second data driving module, wherein an input end of the second data driving module is electrically connected to the USB2.0 signal input end of one of the connectors, and an output end of the second data driving module is electrically connected to the USB2.0 signal output end of the other connector;

[0036] The second data driving module is used for shaping the USB2.0 input signal input from the USB2.0 signal input end, and transmitting the shaping signal to the USB2.0 signal output end.

[0037] The technical solution of the embodiment of the present invention is to set a USB signal long-distance transmission device between the smart device host and the communicated device. The USB signal long-distance transmission device can perform equalization processing on the USB3.2 input signal input by the USB3.2 signal input end through the equalization module, which can shorten the rise time and prevent the occurrence of inter-symbol interference during data transmission. Before the USB signal long-distance transmission device sends the USB3.2 output signal, the flat gain module is used to adjust the flat gain of the USB3.2 output signal to increase the signal amplitude, and then output it from the USB3.2 signal output end. After passing through the USB signal long-distance transmission device, the signal amplitude finally reaches the receiving end and can meet the signal quality requirements of the receiving end, so the communication distance of USB3.2 can be increased, solving the problem of how to further increase the communication distance of USB3.2.

[0038] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 It is a structural diagram of a connection between a smart device host and a communication device provided by the related technology;

[0041] Figure 2 A schematic diagram of the structure of a USB signal long-distance transmission device provided by an embodiment of the present invention connected with a smart device host and a communicated device;

[0042] Figure 3 A circuit block diagram of a USB signal long-distance transmission device provided by an embodiment of the present invention;

[0043] Figure 4 A circuit schematic diagram of a USB signal long-distance transmission device provided by an embodiment of the present invention;

[0044] Figure 5A circuit schematic diagram of a power module provided by an embodiment of the present invention;

[0045] Figure 6 A circuit block diagram of another USB signal long-distance transmission device provided by an embodiment of the present invention;

[0046] Figure 7 A circuit schematic diagram of a data receiving shaping configuration module provided by an embodiment of the present invention;

[0047] Figure 8 A circuit schematic diagram of a data transmission preprocessing configuration module provided in an embodiment of the present invention;

[0048] Fig. 9 A circuit schematic diagram of a first data driving module provided by an embodiment of the present invention;

[0049] Fig.10 A schematic structural diagram of another USB signal long-distance transmission device provided by an embodiment of the present invention.

[0050] Among them: 1. Device body; 11. Shell; 111. First half shell; 112. Second half shell; 12. Fastening assembly; 121. Fastening block; 122. Fastening sheet; 123. Fastening port; 124. Inclined surface; 13. Opening; 2. Connector; 3. First data drive module; 31. Control module; 32. Equalization module; 33. Flat gain module; 34. Output buffer module; 4. Power module; 41. Power chip; 5. Data receiving shaping configuration module; 51. First upper Pull-up resistor position; 52, first pull-down resistor position; 53, first pull-up resistor; 54, first pull-down resistor; 6, data sending preprocessing configuration module; 61, second pull-up resistor position; 62, second pull-down resistor position; 63, second pull-up resistor; 64, second pull-down resistor; 7, second data driving module; 8, isolation module; 81, capacitor; 9, protection module; 91, TVS diode; 20, smart device host; 30, communicated device; 40, processing chip; 50, circuit board. DETAILED DESCRIPTION

[0051] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0052] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0053] Figure 2 A schematic diagram of a structure of a USB signal long-distance transmission device connected to a smart device host 20 and a communication device 30 provided by an embodiment of the present invention, as shown in FIG. Figure 2 As shown, the USB signal long-distance transmission device is applied to a vehicle, and a smart device host 20 is usually provided on the vehicle. The communicated device 30 (such as entertainment equipment, including but not limited to mobile phones, VR glasses, etc.) usually needs to communicate with the smart device host 20 to realize the transmission of USB3.2 signals, so the smart device host 20 and the communicated device 30 are usually provided with a connector 2. In the existing scheme, the connector 2 of the smart device host 20 and the connector 2 of the communicated device 30 are directly connected through a wiring harness, so that when the USB3.2gen2 protocol is adopted, the communicated device 30 cannot communicate due to the long wiring. Based on this, this scheme proposes a USB signal long-distance transmission device, which is connected between the connector 2 of the smart device host 20 and the connector 2 of the communicated device 30, and is used to increase the communication distance between the smart device host 20 and the communicated device 30.

[0054] like Figure 2As shown, the USB signal long-distance transmission device includes a device body 1, which is the main part of the USB signal long-distance transmission device. The device body 1 is provided with a connector 2, and the number of the connectors 2 is two. One connector 2 is used to connect with the connector 2 of the smart device host 20, and the other connector 2 is used to connect with the connector 2 of the communication device 30. The connector 2 can be one of a USB connector 2 and a Type-C connector 2, for example, it can be a vehicle-specific Type-C connector 2. The connector 2 can be one of a socket and a plug that can be plugged and matched. For example, in a specific embodiment, the connectors 2 on the smart device host 20 and the communication device 30 are both plugs, and the connectors 2 provided on the device body 1 are all sockets that can be plugged and matched with the plug, so that one socket on the device body 1 is connected to the plug on the smart device host 20, and the other socket on the device body 1 is connected to the plug on the communication device 30. In another specific embodiment, the connectors 2 on the smart device host 20 and the communication device 30 are both sockets, and the connectors 2 provided on the device body 1 are all plugs that can be plugged and matched with the socket. In the remaining embodiments, the connectors 2 on the smart device host 20 and the communicating device 30 may also be one plug and one socket, and the corresponding connectors 2 provided on the device body 1 may also be one socket and one plug. The specific structures of the device body 1, the smart device host 20 and the communicating device 30 are not specifically limited herein.

[0055] like Figure 2 and Figure 3 As shown, the connector 2 includes a USB3.2 signal input terminal and a USB3.2 signal output terminal. The device body 1 is also provided with a first data driving module 3. The first data driving module 3 includes an equalizing module 32 and a flat gain module 33. The input terminal of the equalizing module 32 is electrically connected to the USB3.2 signal input terminal of one connector 2, the output terminal of the equalizing module 32 is electrically connected to the input terminal of the flat gain module 33, and the output terminal of the flat gain module 33 is electrically connected to the USB3.2 signal output terminal of another connector 2.

[0056] Among them, the USB3.2 signal input terminal refers to the terminal for inputting the USB3.2 signal, and the input USB3.2 signal is the USB3.2 input signal. The USB3.2 signal output terminal refers to the terminal for outputting the USB3.2 signal, and the output USB3.2 signal is the USB3.2 output signal. Since the smart device host 20 and the communicated device 30 are in a process of mutual communication and need to transmit different types of data, the number of USB3.2 signal input terminals and USB3.2 signal output terminals can be multiple, and the number of equalization modules 32 and flat gain modules 33 is also multiple, and they are connected one by one. The USB3.2 signal input terminal on one connector 2 corresponds to the USB3.2 signal output terminal on another connector 2.

[0057] For example, in a specific embodiment, Figure 4 As shown, there are 4 groups of USB3.2 signal input terminals and USB3.2 signal output terminals. The pins corresponding to the four groups of USB3.2 signal input terminals are pin B10, pin B11, pin A10, and pin A11. The pins corresponding to the four groups of USB3.2 signal output terminals are pin B2, pin B3, pin A2, and pin A3. Therefore, the first data driving module 3 is provided with 4 groups of input pins and output pins connected to the USB3.2 signal input terminal and the USB3.2 signal output terminal. Each group includes two pairs of input pins and output pins. Each group of input pins and output pins is connected with an equalization module 32 and a flat gain module 33. Therefore, there are 8 pairs of input pins and output pins in total. The 8 pairs of input pins and output pins are: pin RXAP and pin TXAP, pin RXAN and pin TXAN, pin RXCP and pin TXCP, pin RXCN and pin TXCN, pin RXBP and pin TXBP, Pins RXBN and TXBN, pins RXDP and TXDP, pins RXDN and TXDN, pins RXAP, pins RXAN, pins TXBP, pins TXBN, pins RXCP, pins RXCN, pins TXDP and TXDN are arranged on one side where the first data driving module 3 is connected to one connector 2, and pins RXAP, pins RXAN, pins TXBP, pins TXBN, pins RXCP, pins RXCN, pins TXDP and pins TXDN are arranged on the other side where the first data driving module 3 is connected to another connector 2. Thus, the intelligent device host 20 and the communicated device 30 can conveniently communicate with each other via USB3.2.

[0058] like Figure 3As shown, the first data driving module 3 also includes a control module 31, which is used to control the gains of the equalization module 32 and the flat gain module 33, so that the equalization module 32 performs equalization processing on the USB3.2 input signal input from the USB3.2 signal input terminal, so that the flat gain module 33 performs flat gain processing on the USB3.2 output signal, and the USB3.2 signal output terminal is used to output the USB3.2 output signal after the flat gain processing.

[0059] Among them, the equalization module 32 refers to a module capable of sorting and processing the data waveform of the USB3.2 input signal, such as a module for equalization processing. The equalization processing requires the amplitude of the data waveform of the received USB3.2 input signal to be increased. When the gain is different, the degree of amplitude increase of the data waveform of the USB3.2 input signal is different; preferably, the equalization module 32 includes an equalizer. The flat gain module 33 refers to a module capable of waveform processing of the USB3.2 output signal, such as a module for flat gain processing. The flat gain processing also changes the amplitude of the data waveform of the USB3.2 output signal. When the gain is different, the degree of amplitude change of the data waveform of the USB3.2 output signal is different. Preferably, the flat gain module 33 is a gain flat filter. The flat gain module 33 can be other components that can achieve flat gain. No specific limitation is made here, but it is just an example. Therefore, by controlling the gains of the equalizing module 32 and the flat gain module 33 through the control module 31, the equalizing module 32 can perform equalization processing on the USB3.2 input signal input from the USB3.2 signal input end, and the flat gain module 33 can perform flat gain processing on the USB3.2 output signal. At the same time, the USB3.2 output signal after flat gain processing will be output from the USB3.2 signal output end.

[0060] like Figure 1 and Figure 3 As shown, the device body 1 is also provided with a power module 4, the output end of the power module 4 is electrically connected to the control module 31, the equalization module 32 and the flat gain module 33, and is used to supply power to the control module 31, the equalization module 32 and the flat gain module 33.

[0061] The power module 4 refers to a module that can convert an external voltage into an operating voltage of the control module 31, the equalization module 32, and the flat gain module 33. Since the output end of the power module 4 is electrically connected to the control module 31, the equalization module 32, and the flat gain module 33, the power module 4 can supply power to the control module 31, the equalization module 32, and the flat gain module 33, so that the control module 31, the equalization module 32, and the flat gain module 33 can be used normally. Preferably, as Figure 5 As shown, the power module 4 includes a power chip 41, and the power chip 41 is one of LDO and DCDC. Figure 5In the figure, the power chip 41 is taken as DCDC as an example.

[0062] The essential reason why the USB3.2 signal (gen1 or gen2) has a short transmission distance is that during the transmission of high-frequency digital signals (5Gbps or 10Gbps), due to the limitations of the transmission cable material and length, the rising edge of the high-frequency digital signal will degrade during the transmission process, which will cause a part of the high-frequency component of the high-frequency digital signal to be lost, showing that the rising edge of the high-frequency digital signal is extended; at the same time, the signal level amplitude will also decrease due to the increase in transmission distance. In view of the situation of reduced level amplitude, when reaching the receiving end, the signal collected by the receiving end cannot reach the high level threshold of the received signal due to the low signal amplitude and cannot be correctly identified. In the case of rising edge degradation (rising edge extension), if the rising edge is severely degraded, inter-symbol interference will occur. When the signal is transmitted to the receiving end, it is no longer the original data signal represented, and recognition errors will also occur.

[0063] The above scheme sets up a USB signal long-distance transmission device between the smart device host 20 and the communicated device 30. The USB signal long-distance transmission device can perform equalization processing on the USB3.2 input signal input from the USB3.2 signal input terminal through the equalization module 32, shorten the rise time, and prevent the occurrence of inter-symbol interference during data transmission. Before the USB signal long-distance transmission device sends the USB3.2 output signal, the flat gain module 33 is used to adjust the flat gain of the USB3.2 output signal to increase the signal amplitude, and then output it from the USB3.2 signal output terminal. After passing through the USB signal long-distance transmission device, the signal amplitude finally reaches the receiving end and can meet the signal quality requirements of the receiving end, so the communication distance of USB3.2 can be increased, solving the problem of how to further increase the communication distance of USB3.2.

[0064] In an optional embodiment of the present invention, Figure 6 As shown, the USB signal long-distance transmission device also includes a data receiving shaping configuration module 5, which has a plurality of input configuration levels, and different input configuration levels correspond to different gains; the data receiving shaping configuration module 5 is electrically connected to the input configuration end of the control module 31, and the control module 31 is used to adjust the gain of the equalization module 32 based on the input configuration level.

[0065] Among them, the data receiving shaping configuration module 5 refers to a module that can configure the gain of the equalizing module 32, and the input configuration level refers to the level of the gain of the equalizing module 32, that is, different input configuration levels correspond to different gains of the equalizing module 32. For example, the input configuration levels include level 0, level 1, level 2, and level 3. The gain corresponding to level 0 is the smallest, and the gain corresponding to level 3 is the largest. By configuring the data receiving shaping configuration module 5 to a suitable input configuration level, the gain of the equalizing module 32 can be more appropriately balanced for the USB3.2 input signal, thereby extending the communication distance of USB3.2.

[0066] Based on the above embodiments, Figure 6 and Figure 7 As shown, the data receiving shaping configuration module 5 includes a first pull-up resistor 51 and a first pull-down resistor 52, the first pull-up resistor 51 can be configured to connect to a first pull-up resistor 53, the first pull-down resistor 52 can be configured to connect to a first pull-down resistor 54, and the first pull-up resistor 51 and the first pull-down resistor 52 are connected in series between the output terminal and the ground of the power module 4. The input configuration terminal of the control module 31 is electrically connected between the first pull-up resistor 51 and the first pull-down resistor 52.

[0067] There is an input configuration level corresponding to the first pull-up resistor 53 being not configured and the first pull-down resistor 54 being configured to the first resistance value.

[0068] There is an input configuration level corresponding to that both the first pull-up resistor 53 and the first pull-down resistor 54 are not configured.

[0069] There is an input configuration level corresponding to the first pull-up resistor 53 being not configured and the first pull-down resistor 54 being configured to the second resistance value.

[0070] There is an input configuration level corresponding to the first pull-up resistor 53 being configured to the second resistance value and the first pull-down resistor 54 being not configured.

[0071] The first pull-up resistor position 51 refers to a position for configuring the first pull-up resistor 53, for example, it can be a pad for installing the first pull-up resistor 53, and the first pull-down resistor position 52 refers to a position for configuring the first pull-down resistor 54, for example, it can be a pad for installing the first pull-down resistor 54. When the configuration of the first pull-up resistor 53 and the first pull-down resistor 54 is different, the signal transmitted to the control module 31 is also different, so that the control module 31 can determine the input configuration level according to the received signal, and then adjust the gain of the equalization module 32 according to the input configuration level.

[0072] For example, in a specific embodiment, assuming that the first resistance is 68K, the second resistance is 1K, the first pull-up resistor 53 is not configured and the first pull-down resistor 54 is configured as the input configuration level corresponding to the first resistance value is level 0, at this time, the balancing module 32 has a gain of 3.5dB at 5Gpbs rate and a gain of 8dB at 10Gbps. The first pull-up resistor 53 and the first pull-down resistor 54 are not configured with the corresponding input configuration level of level 1, at this time, the balancing module 32 has a gain of 5.3dB at 5Gpbs rate and a gain of 10.6dB at 10Gbps. The first pull-up resistor 53 is not configured and the first pull-down resistor 54 is configured as the input configuration level corresponding to the second resistance value is level 2, at this time, the balancing module 32 has a gain of 6.7dB at 5Gpbs rate and a gain of 12.4dB at 10Gbps. The first pull-up resistor 53 is configured to the second resistance value and the first pull-down resistor 54 is not configured. The corresponding input configuration level is level 3. At this time, the equalization module 32 has a gain of 8.4dB at 5Gpbs and a gain of 14.6dB at 10Gbps. Therefore, the communication distance of USB3.2 can be increased by reasonably configuring the data receiving shaping configuration module 5.

[0073] Preferably, Figure 4 and Figure 7 As shown, the number of data receiving shaping configuration modules 5 is the same as the number of balancing modules 32, and one data receiving shaping configuration module 5 is used to configure one balancing module 32. For example, in a specific embodiment, the number of data receiving shaping configuration modules 5 and the number of balancing modules 32 are both four, and the number of input configuration terminals of the control module 31 is also four. The four input configuration terminals are pins EQA, EQB, EQC and EQD, respectively. The serial numbers of the four balancing modules 32 are A, B, C, and D, respectively, so that the data receiving shaping configuration module 5 connected to pin EQA can configure the balancing module 32 with serial number A and adjust the gain of the balancing module 32 with serial number A. The data receiving shaping configuration module 5 connected to pin EQB can configure the balancing module 32 with serial number B and adjust the gain of the balancing module 32 with serial number B. By analogy, different data receiving shaping configuration modules 5 can configure different balancing modules 32, so that different balancing modules 32 can be adjusted to different gains according to needs, so that the communication distance of USB3.2 is increased.

[0074] In an optional embodiment of the present invention, Figure 6 As shown, the USB signal long-distance transmission device also includes a data transmission preprocessing configuration module 6, which has a plurality of output configuration levels, and different output configuration levels correspond to different gains; the data transmission preprocessing configuration module 6 is electrically connected to the output configuration end of the control module 31, and the control module 31 is used to adjust the gain of the flat gain module 33 based on the output configuration level.

[0075] Among them, the data sending preprocessing configuration module 6 refers to a module that can configure the gain of the flat gain module 33, and the output configuration level refers to the level of configuring the gain size of the flat gain module 33, that is, different output configuration levels correspond to different gains of the flat gain module 33. For example, the output configuration levels include level 0, level 1, level 2, and level 3. The gain corresponding to level 0 is the smallest, and the gain corresponding to level 3 is the largest. By configuring the data sending preprocessing configuration module 6 to a suitable output configuration level, the gain of the flat gain module 33 can be more appropriately used to perform flat gain processing on the USB3.2 output signal, thereby extending the communication distance of USB3.2.

[0076] Based on the above embodiments, Figure 6 and Figure 8 As shown, the data sending preprocessing configuration module 6 includes a second pull-up resistor position 61 and a second pull-down resistor position 62, the second pull-up resistor position 61 can be configured to connect to the second pull-up resistor 63, the second pull-down resistor position 62 can be configured to connect to the second pull-down resistor 64, the second pull-up resistor position 61 and the second pull-down resistor position 62 are connected in series between the output end of the power supply module 4 and the ground, and the output configuration end of the control module 31 is electrically connected between the second pull-up resistor position 61 and the second pull-down resistor position 62.

[0077] There is an output configuration level corresponding to the second pull-up resistor 63 being not configured and the second pull-down resistor 64 being configured to the first resistance value.

[0078] There is an output configuration level corresponding to the second pull-up resistor 63 and the second pull-down resistor 64 being not configured.

[0079] There is an output configuration level corresponding to the second pull-up resistor 63 being not configured and the second pull-down resistor 64 being configured to the second resistance value.

[0080] There is an output configuration level corresponding to the second pull-up resistor 63 being configured to the second resistance value and the second pull-down resistor 64 being not configured.

[0081] The second pull-up resistor position 61 refers to a position for configuring the second pull-up resistor 63, for example, it can be a pad for installing the second pull-up resistor 63, and the second pull-down resistor position 62 refers to a position for configuring the second pull-down resistor 64, for example, it can be a pad for installing the second pull-down resistor 64. When the configuration of the second pull-up resistor 63 and the second pull-down resistor 64 is different, the signal transmitted to the control module 31 is also different, so that the control module 31 can determine the output configuration level according to the received signal, and then adjust the gain of the flat gain module 33 according to the output configuration level.

[0082] For example, in a specific embodiment, assuming that the first resistance is 68K, the second resistance is 1K, the second pull-up resistor 63 is not configured and the second pull-down resistor 64 is configured as the output configuration level corresponding to the first resistance value is level 0, at which time the flat gain module 33 is -1.6dB gain. The second pull-up resistor 63 and the second pull-down resistor 64 are not configured with the corresponding output configuration level of level 1, at which time the flat gain module 33 is -1.6dB gain. The second pull-up resistor 63 is not configured and the second pull-down resistor 64 is configured as the output configuration level corresponding to the second resistance value is level 2, at which time the flat gain module 33 is -1.6dB gain. The second pull-up resistor 63 is configured as the second resistance value and the second pull-down resistor 64 is not configured with the corresponding output configuration level of level 3, at which time the flat gain module 33 is -1.6dB gain. Therefore, the pre-processing configuration module 6 can be sent by reasonably configuring data, so that the communication distance of USB3.2 is increased longer.

[0083] Preferably, Figure 4 , Figure 6 and Figure 8 As shown, the number of data transmission preprocessing configuration modules 6 is the same as the number of flat gain modules 33, and one data transmission preprocessing configuration module 6 is used to configure one flat gain module 33. For example, in a specific embodiment, the number of data transmission preprocessing configuration modules 6 and the number of flat gain modules 33 are both four, and the output configuration end of the control module 31 is also four. The four output configuration ends are pins EGA, EGB, EGC and EGD respectively, and the serial numbers of the four flat gain modules 33 are A, B, C, and D respectively, so that the data transmission preprocessing configuration module 6 connected to the pin EGA can configure the flat gain module 33 with serial number A and adjust the gain of the flat gain module 33 with serial number A. The data transmission preprocessing configuration module 6 connected to the pin EGB can configure the flat gain module 33 with serial number B and adjust the gain of the flat gain module 33 with serial number B. By analogy, different data transmission preprocessing configuration modules 6 can configure different flat gain modules 33, so that different flat gain modules 33 can be adjusted to different gains according to needs, so that the communication distance of USB3.2 is increased.

[0084] In summary, a USB signal long-distance transmission device is added between the data transmission cables of USB3.2 (gen1 or gen2), and the data receiving and shaping configuration module 5 and the data sending preprocessing configuration module 6 in the USB signal long-distance transmission device are configured to enable the data transmission distance of USB3.2 to reach more than 5 meters, thereby increasing the data transmission distance of USB3.2 for vehicle smart devices, meeting the entertainment requirements of rear passengers in the car for USB3.2 data transmission, allowing USB3.2 data to be transmitted farther, and promoting the further development of automotive intelligence.

[0085] In an optional embodiment of the present invention, Fig. 9 As shown, the first data driving module 3 also includes an output buffer module 34, which is electrically connected between the flat gain module 33 and the connector 2; the output buffer module 34 is used to buffer the USB3.2 output signal. The output buffer module 34 is a module capable of buffering the USB3.2 output signal. The number of the output buffer modules 34 is the same as the number of the flat gain modules 33 and corresponds one to one, and each output buffer module 34 is arranged between the corresponding flat gain module 33 and the connector 2.

[0086] Preferably, the output buffer module 34 includes an output buffer. The output buffer is a type of buffer. It receives information to be output by the host, temporarily stores it, and then sends it to the output device, which is also to compensate for the speed difference between the host and the slow output device. Most of the output buffers are set on the interface circuit of the output device. Thus, the USB3.2 output signals output by the multiple flat gain modules 33 can be output from the connector 2 more synchronously.

[0087] In an optional embodiment of the present invention, Figure 4 As shown, the USB signal long-distance transmission device also includes an isolation module 8, which is arranged between the connector 2 and the first data driver module 3 for isolation. Specifically, the number of isolation modules 8 is two groups, one group of isolation modules 8 is arranged between one connector 2 and the first data driver module 3, and the other isolation module 8 is arranged between another connector 2 and the first data driver module 3. Preferably, the isolation module 8 includes a capacitor 81; capacitor isolation is a technology that uses a capacitor 81 to isolate a signal, by converting the input signal into an electric field signal through the capacitor 81, and then converting the electric field signal into an output signal through the capacitor 81, so as to achieve isolation between the input and the output. Capacitor isolation has the advantages of good isolation effect, fast speed, strong anti-interference ability, etc., and is widely used in the fields of electricity, electronics, communications, etc., so by including a capacitor 81 in the isolation module 8, the isolation function can be conveniently realized. Preferably, the capacitance range of the capacitor 81 is 33nF to 330nF, so that the isolation effect is good.

[0088] In an optional embodiment of the present invention, the USB signal long-distance transmission device further includes a protection module 9, which is electrically connected to the connector 2 for electrostatic protection. The protection module 9 refers to a module capable of protecting the scenic spots and radiation interference on the vehicle. Preferably, the protection module 9 includes a TVS diode 91, which is electrically connected between the connector 2 and the ground. By providing the protection module 9, it is possible to prevent the USB signal long-distance transmission device from being damaged due to static electricity and radiation interference on the vehicle, thereby extending the life of the USB signal long-distance transmission device.

[0089] In an optional embodiment of the present invention, Figure 4 and Fig.10 As shown, the USB signal long-distance transmission device further includes a circuit board 50, the first data driving module 3 and the power module 4 are both arranged on the circuit board 50, and the two connectors 2 are both fixedly connected to the circuit board 50; one connector 2 is fixedly connected to the upper side of the circuit board 50, and the other connector 2 is fixedly connected to the lower side of the circuit board 50. When the USB signal long-distance transmission device further includes a second data driving module 7, the second data driving module 7 is also arranged on the circuit board 50. The circuit board 50 adopts a multi-layer laminated structure, which can be one of a 4-layer laminated structure and a 6-layer laminated structure, or can be other multi-layer laminated structures, which is not specifically limited here.

[0090] Preferably, the connector 2 further includes a VBUS signal terminal, and the VBUS signal terminals of the two connectors 2 are electrically connected through a VBUS signal trace on the circuit board 50, and the power module 4 is connected to the VBUS signal trace to supply power to the power module 4. The VBUS signal trace width is greater than 5 mm, so that it can withstand a current of not less than 5 A to prevent damage by overcurrent.

[0091] Preferably, the connector 2 also includes a CC1 signal terminal and a CC2 signal terminal. The CC1 signal terminals of the two connectors 2 are electrically connected through a CC1 signal trace on the circuit board 50. The CC2 signal terminals of the two connectors 2 are electrically connected through a CC2 signal trace on the circuit board 50. The width of the CC1 signal trace and the CC2 signal trace are both greater than 0.254 mm, so that the current that can be withstood is not less than 10 mA.

[0092] In an optional embodiment of the present invention, Fig.10 As shown, the device body 1 includes a shell 11 and a fixing component 12, and the circuit board 50 is located inside the shell 11, wherein both ends of the shell 11 may be provided with openings 13, one opening 13 for one connector 2 to pass through, and the other opening 13 for another connector 2 to pass through. Therefore, when the circuit board 50 is located inside the shell 11, the two connectors 2 connected to the circuit board 50 can pass through the openings 13 at both ends, which is convenient for connecting with the smart device host 20 and the communicated device 30.

[0093] Furthermore, the housing 11 includes a first half shell 111 and a second half shell 112, the first half shell 111 and the second half shell 112 are used to buckle together to form the housing 11, and the clamping assembly 12 is used to relatively fix the first half shell 111 and the second half shell 112 when the first half shell 111 and the second half shell 112 are buckled together. Among them, the clamping assembly 12 refers to a component that can relatively fix the first half shell 111 and the second half shell 112. By dividing the housing 11 into the first half shell 111 and the second half shell 112, the circuit board 50 can be conveniently installed in the housing 11. The clamping assembly 12 can fix the first half shell 111 and the second half shell 112 after the circuit board 50 is installed, so as to prevent the first half shell 111 and the second half shell 112 from vibrating and falling off when the car is running, causing damage to the circuit board 50.

[0094] On the basis of the above embodiment, the fixing component 12 includes a fixing block 121 and a fixing sheet 122, the number of the fixing sheets 122 is multiple and divided into two groups, the number of the fixing sheets 122 in each group is at least one, one group of fixing sheets 122 is arranged on the side wall on one side of the first half shell 111, and the other group of fixing sheets 122 is arranged on the side wall on the other side of the first half shell 111, and each fixing sheet 122 is provided with a fixing opening 123; the number of the fixing blocks 121 is multiple and divided into two groups, one group of fixing blocks 121 is arranged on the side wall on one side of the second half shell 112, and the other group of fixing blocks 121 is arranged on the side wall on the other side of the second half shell 112, the number of the fixing blocks 121 in each group is at least one, the number of the fixing blocks 121 is the same as the number of the fixing openings 123 and corresponds one to one, and each fixing block 121 is used to pass through the corresponding fixing opening 123 when the first half shell 111 and the second half shell 112 are buckled together.

[0095] The clamping block 121 has an inclined surface 124. The cross-sectional shape of the clamping block 121 may be a right-angled trapezoid, and the lower end of the clamping block 121 is a plane. When the first half shell 111 and the second half shell 112 are buckled together, the lower end of the clamping piece 122 will first press against the inclined surface 124, exerting a force on the clamping block 121 to move in a direction away from the clamping piece 122 in a lateral direction. When the first half shell 111 and the second half shell 112 are completely buckled together, the clamping block 121 will align with the clamping opening 123 and pass through the clamping opening 123. Thus, the relative fixation of the first half shell 111 and the second half shell 112 is achieved.

[0096] In an optional embodiment of the present invention, Figure 4As shown, the connector 2 also includes a USB2.0 signal input terminal and a USB2.0 signal output terminal; the USB signal long-distance transmission device also includes a second data driving module 7, the input terminal of the second data driving module 7 is electrically connected to the USB2.0 signal input terminal of one connector 2, and the output terminal of the second data driving module 7 is electrically connected to the USB2.0 signal output terminal of another connector 2; the second data driving module 7 is used to shape the USB2.0 input signal inputted from the USB2.0 signal input terminal and transmit it to the USB2.0 signal output terminal.

[0097] The second data driving module 7 is a module capable of shaping the USB2.0 data waveform to increase the transmission distance of the USB2.0 input signal input by the connector 2. The second data driving module 7 may include a shaping IC, and the shaping IC includes but is not limited to TUSB212RWBT. Therefore, in the process of communication between the smart device host 20 and the communication device 30 through the USB signal long-distance transmission device, both USB3.2 data communication and USB2.0 data communication can be applied, and the function is relatively complete.

[0098] For example, in a specific embodiment, Figure 4 As shown, the pins corresponding to the USB2.0 signal input end and the USB2.0 signal output end are pins A6 / B6 and pins A7 / B7. Therefore, the first data driving module 3 is provided with corresponding pins connected to the USB2.0 signal input end and the USB2.0 signal output end, which are pins D1P, pin D1M, pin D2P, and pin D2M, respectively. Pins D1P and pin D1M are arranged on one side where the second data driving module 7 is connected to one connector 2, and pins D2P and pin D2M are arranged on the other side where the second data driving module 7 is connected to another connector 2. Therefore, the intelligent device host 20 and the communicated device 30 can conveniently communicate with each other via USB2.0.

[0099] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0100] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A USB signal long-distance transmission device, characterized in that: It comprises a device body, on which a connector, a first data driving module and a power supply module are arranged; There are two connectors, and the two connectors are used to electrically connect to the smart device host and the communicated device respectively; The connector includes a USB3.2 signal input terminal and a USB3.2 signal output terminal, the first data driving module includes a control module, a balancing module and a flat gain module, the input terminal of the balancing module is electrically connected to the USB3.2 signal input terminal of one of the connectors, the output terminal of the balancing module is electrically connected to the input terminal of the flat gain module, and the output terminal of the flat gain module is electrically connected to the USB3.2 signal output terminal of another of the connectors; The control module is used to control the gains of the equalization module and the flat gain module, so that the equalization module performs equalization processing on the USB3.2 input signal input from the USB3.2 signal input end, so that the flat gain module performs flat gain processing on the USB3.2 output signal, and the USB3.2 signal output end is used to output the USB3.2 output signal after the flat gain processing; The output end of the power supply module is electrically connected to the control module, the equalization module and the flat gain module, and is used to supply power to the control module, the equalization module and the flat gain module.

2. The USB signal long-distance transmission device according to claim 1, characterized in that: The USB signal long-distance transmission device further includes a data receiving shaping configuration module, the data receiving shaping configuration module having a plurality of input configuration levels, and different input configuration levels correspond to different gains; the data receiving shaping configuration module is electrically connected to the input configuration end of the control module, and the control module is used to adjust the gain of the equalization module based on the input configuration level; And / or, the USB signal long-distance transmission device also includes a data sending preprocessing configuration module, the data sending preprocessing configuration module has a plurality of output configuration levels, and different output configuration levels correspond to different gains; the data sending preprocessing configuration module is electrically connected to the output configuration end of the control module, and the control module is used to adjust the gain of the flat gain module based on the output configuration level.

3. The USB signal long-distance transmission device according to claim 2, characterized in that: The data receiving shaping configuration module includes a first pull-up resistor and a first pull-down resistor, the first pull-up resistor can be configured to connect to a first pull-up resistor, the first pull-down resistor can be configured to connect to a first pull-down resistor, and the first pull-up resistor and the first pull-down resistor are connected in series between the output end of the power module and the ground; The input configuration terminal of the control module is electrically connected between the first pull-up resistor position and the first pull-down resistor position; There is one input configuration level corresponding to the first pull-up resistor being not configured and the first pull-down resistor being configured to a first resistance value; There is one input configuration level corresponding to which neither the first pull-up resistor nor the first pull-down resistor is configured; There is one input configuration level corresponding to the first pull-up resistor being not configured and the first pull-down resistor being configured to a second resistance value; There is an input configuration level corresponding to the first pull-up resistor being configured to the second resistance value and the first pull-down resistor being not configured.

4. The USB signal long-distance transmission device according to claim 2, characterized in that: The data transmission preprocessing configuration module includes a second pull-up resistor bit and a second pull-down resistor bit, the second pull-up resistor bit can be configured to connect to a second pull-up resistor, the second pull-down resistor bit can be configured to connect to a second pull-down resistor, the second pull-up resistor bit and the second pull-down resistor bit are connected in series between the output end of the power module and the ground, and the output configuration end of the control module is electrically connected between the second pull-up resistor bit and the second pull-down resistor bit; There is one output configuration level corresponding to the second pull-up resistor being not configured and the second pull-down resistor being configured to the first resistance value; There is one output configuration level corresponding to which neither the second pull-up resistor nor the second pull-down resistor is configured; There is one output configuration level corresponding to the second pull-up resistor being not configured and the second pull-down resistor being configured to a second resistance value; There is an output configuration level corresponding to the second pull-up resistor being configured to the second resistance value and the second pull-down resistor being not configured.

5. The USB signal long-distance transmission device according to any one of claims 1 to 4, characterized in that: The first data driving module further includes an output buffer module, and the output buffer module is electrically connected between the flat gain module and the connector; The output buffer module is used to buffer the USB3.2 output signal.

6. The USB signal long-distance transmission device according to any one of claims 1 to 4, characterized in that: The USB signal long-distance transmission device further includes at least one of the following: an isolation module, the isolation module being disposed between the connector and the first data driving module for isolation; A protection module is electrically connected to the connector for electrostatic protection.

7. The USB signal long-distance transmission device according to claim 6, characterized in that: The isolation module includes a capacitor; And / or, the protection module includes a TVS diode, and the TVS diode is electrically connected between the connector and the ground.

8. The USB signal long-distance transmission device according to any one of claims 1 to 4, characterized in that: The USB signal long-distance transmission device further comprises a circuit board, the first data driving module and the power supply module are both arranged on the circuit board, and the two connectors are both fixedly connected to the circuit board; The device body includes a shell and a fixing assembly, the circuit board is located inside the shell, the shell includes a first half shell and a second half shell, the first half shell and the second half shell are used to be interlocked to form the shell, and the fixing assembly is used to relatively fix the first half shell and the second half shell when the first half shell and the second half shell are interlocked.

9. The USB signal long-distance transmission device according to claim 8, characterized in that: The clamping assembly comprises a clamping block and a clamping sheet, wherein the clamping sheet is arranged on the side wall of the first half shell and a clamping opening is arranged on the clamping sheet; The fixing block is arranged on the side wall of the second half shell, the fixing block has an inclined surface, and is used to pass through the fixing opening when the first half shell and the second half shell are buckled with each other, so as to relatively fix the first half shell and the second half shell.

10. The USB signal long-distance transmission device according to any one of claims 1 to 4, characterized in that: The connector also includes a USB2.0 signal input terminal and a USB2.0 signal output terminal; The USB signal long-distance transmission device further comprises a second data driving module, wherein an input end of the second data driving module is electrically connected to the USB2.0 signal input end of one of the connectors, and an output end of the second data driving module is electrically connected to the USB2.0 signal output end of the other connector; The second data driving module is used for shaping the USB2.0 input signal input from the USB2.0 signal input end, and transmitting the shaping signal to the USB2.0 signal output end.

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