Type-C connector, video transmission system and vehicle

Abstract

The present disclosure relates to a Type-C connector, a video transmission system and a vehicle. The Type-C connector includes an external Type-C interface, a power supply controller, a video switch, a first internal Type-C interface and a second internal Type-C interface; the configuration channel input port of the power supply controller is connected to the configuration channel output port of the external Type-C interface, and the strobe output port of the power supply controller is connected to the strobe input port of the video switch; the first external data port of the video switch is connected to the bidirectional data port of the external Type-C interface, the first data input port of the video switch is connected to the first data port of the first internal Type-C interface, and the first data output port of the video switch is connected to the second data port of the second internal Type-C interface. The technical solution disclosed in the present disclosure can solve the technical problem that the number of reserved interfaces in the vehicle is too large.

Description

Technical Field

[0001] The present disclosure relates to the field of automobile technology, and in particular to a Type-C connector, a video transmission system and a vehicle. Background Art

[0002] In recent years, with the continuous development of automobile technology and the improvement of economic level, cars have become a major consumer product and have entered thousands of households. In-car audio and video entertainment and other functions have also become one of the main functional requirements of users. More and more interactive functions have made the space in the car more limited. Therefore, multi-functional integrated interfaces have become increasingly important.

[0003] As important components of in-car audio and video entertainment, the screen projection function and virtual reality (VR) function need to occupy a Type-C interface in the car respectively. This results in the originally tight in-car space requiring a dedicated screen projection interface and VR interface, which not only affects the appearance of the car, but also occupies the already tight in-car interface space. Therefore, the existing technology has the technical problem of too many reserved interfaces in the car. Utility Model Content

[0004] In order to solve the above technical problems, the present disclosure provides a Type-C connector, a video transmission system and a vehicle to reduce the number of reserved interfaces in the vehicle and solve the technical problem that the number of reserved interfaces in the vehicle is too large.

[0005] The present disclosure provides a Type-C connector, including an external Type-C interface, a power supply controller, a video switch, a first internal Type-C interface, and a second internal Type-C interface;

[0006] The power supply controller includes a configuration channel input port and a strobe output port;

[0007] The video switch includes a strobe input port, a first external data port, a first data input port and a first data output port;

[0008] The external Type-C interface includes a bidirectional data port and a configuration channel output port, the first internal Type-C interface includes a first data port, and the second internal Type-C interface includes a second data port;

[0009] The configuration channel input port of the power supply controller is connected to the configuration channel output port of the external Type-C interface, and the strobe output port of the power supply controller is connected to the strobe input port of the video switch;

[0010] The first external data port of the video switch is connected to the bidirectional data port of the external Type-C interface, the first data input port of the video switch is connected to the first data port of the first internal Type-C interface, and the first data output port of the video switch is connected to the second data port of the second internal Type-C interface.

[0011] In some embodiments, the Type-C connector further includes a multiplexer, and the bidirectional data port of the external Type-C interface is connected to the first external data port of the video switch through the multiplexer; the power supply controller further includes an I2C output port;

[0012] The multiplexer includes an I2C input port, a second external data port and an internal data port,

[0013] The second external data port of the multiplexer is connected to the bidirectional data port of the external Type-C interface, the internal data port of the multiplexer is connected to the first external data port of the video switch, and the I2C input port of the multiplexer is connected to the I2C output port of the power supply controller.

[0014] In some embodiments, the Type-C connector further includes a first signal repeater, and the second external data port of the multiplexer is connected to the bidirectional data port of the external Type-C interface through the first signal repeater.

[0015] In some embodiments, the Type-C connector further includes a switch circuit, the power supply controller further includes a power supply port, and the external Type-C interface further includes a power supply port;

[0016] The power supply port of the power supply controller is connected to the power supply port of the external Type-C interface through the switch circuit.

[0017] In some embodiments, the external Type-C interface further includes a first USB port, and the power supply controller further includes a second USB port;

[0018] The first USB port of the external Type-C interface is connected to the second USB port of the power supply controller.

[0019] The present disclosure also provides a video transmission system, comprising a processing chip and the above-mentioned Type-C connector, wherein the processing chip comprises a second data output port and a second data input port;

[0020] The second data output port of the processing chip is connected to a third internal Type-C interface, and the second data input port of the processing chip is connected to a fourth internal Type-C interface;

[0021] The third internal Type-C interface is connected to the first internal Type-C interface via a cable, and the fourth internal Type-C interface is connected to the second internal Type-C interface via a cable.

[0022] In some embodiments, a second signal repeater and a third signal repeater are further included;

[0023] The second data output port of the processing chip is connected to the third internal Type-C interface through the second signal repeater, and the processing chip outputs a video signal from the third internal Type-C interface through the second signal repeater;

[0024] The second data input port of the processing chip is connected to the fourth internal Type-C interface through the third signal repeater, and the processing chip receives a video signal from the fourth internal Type-C interface through the third signal repeater.

[0025] In some embodiments, the processing chip is a system-on-chip.

[0026] The present disclosure also provides a vehicle, comprising the above-mentioned video transmission system.

[0027] In some embodiments, the external Type-C interface of the Type-C connector is disposed on an air conditioning screen panel or a central control screen panel.

[0028] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0029] The technical solution provided by the embodiment of the present disclosure, the Type-C connector includes an external Type-C interface, a power supply controller, a video switch, a first internal Type-C interface and a second internal Type-C interface. The bidirectional data port of the external Type-C interface is connected to the first external data port of the video switch, the configuration channel output port of the external Type-C interface is connected to the configuration channel input port of the power supply controller; the strobe output port of the power supply controller is connected to the strobe input port of the video switch; the first external data port of the video switch is connected to the bidirectional data port of the external Type-C interface, the first data input port of the video switch is connected to the first data port of the first internal Type-C interface, and the first data output port of the video switch is connected to the second data port of the second internal Type-C interface. When an external device is inserted into the external Type-C interface, the power supply controller can receive the device type information input by the external device through the configuration channel input port, and judge the device type of the external device according to the device type information. According to the device type of the external device, the power supply controller sends a corresponding strobe signal to the video switch through the strobe output port, and the video switch can connect the first internal Type-C interface or the second internal Type-C interface according to the strobe signal. The Type-C connector provided in the embodiment of the present disclosure only reserves one external Type-C interface in the car, which can meet the screen projection function and VR function, thereby reducing the number of reserved interfaces in the car and solving the technical problem of the large number of reserved interfaces in the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0032] Figure 1 A schematic diagram of a Type-C connector provided in an embodiment of the present disclosure;

[0033] Figure 2 Another schematic diagram of a Type-C connector provided by an embodiment of the present disclosure;

[0034] Figure 3 A schematic diagram of pin signal definition of the Type-C interface in an embodiment of the present disclosure;

[0035] Figure 4A schematic diagram of pin signal definition of a Type-C plug in an embodiment of the present disclosure;

[0036] Figure 5 This is a partial pin connection diagram of a Type-C plug being inserted in an embodiment of the present disclosure;

[0037] Figure 6 This is a schematic diagram of some pin connections of a Type-C plug inserted in reverse in an embodiment of the present disclosure;

[0038] Figure 7 A schematic diagram of the structure of a video transmission system provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0039] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0041] Figure 1 A schematic diagram of a Type-C connector provided in an embodiment of the present disclosure, the Type-C connector can reduce the number of reserved interfaces in a vehicle. Figure 1 As shown, the Type-C connector includes an external Type-C interface N0, a power delivery controller (Power Delivery Controller), a video switch (DisplayPortSwitch), a first internal Type-C interface N1 and a second internal Type-C interface N2.

[0042] The power supply controller includes a configuration channel input port (Configure Channel, CC for short) and a strobe output port SEL; the video switch includes a strobe input port SEL, a first external data port, a first data input port and a first data output port; the external Type-C interface N0 includes a bidirectional data port and a configuration channel output port CC, the first internal Type-C interface N1 includes a first data port, and the second internal Type-C interface N2 includes a second data port.

[0043] The configuration channel input port of the power supply controller is connected to the configuration channel output port of the external Type-C interface N0 through a lead, and the strobe output port of the power supply controller is connected to the strobe input port of the video switch through a lead. The first external data port of the video switch is connected to the bidirectional data port of the external Type-C interface N0 through a lead, specifically including an auxiliary information port and a video data port. For example, the auxiliary information port can be an AUX interface, and the video data port can be a video signal (DisplayPort, referred to as DP) port, including DP_D0, DP_D1, DP_D2, and DP_D3.

[0044] The first data input port of the video switch is connected to the first data port AUX, DP_D0, DP_D1, DP_D2, DP_D3 of the first internal Type-C interface N1 through a lead, and the first data output port of the video switch is connected to the second data port AUX, DP_D0, DP_D1, DP_D2, DP_D3 of the second internal Type-C interface N2 through a lead. The hot plug detection (Hot Plug Detection, HPD for short) port of the video switch is also connected to the hot plug detection port of the power supply controller, the first internal Type-C interface N1 and the second internal Type-C interface N2 respectively to support the hot plug function of Type-C.

[0045] The external Type-C interface N0, the power supply controller, the video switch, the first internal Type-C interface N1 and the second internal Type-C interface N2 can be arranged on a printed circuit board (PCB), and the leads between the ports can be integrated into the printed circuit board.

[0046] When an external device is inserted into the external Type-C interface N0, the power supply controller determines the device type of the external device according to whether the information input by the external device through the configuration channel input port CC is a current source or a current sink. If the external device is a current source device, such as a VR device, the power supply controller sends an output selection signal (e.g., a high level signal) to the video switch by selecting the output port SEL, and the video switch connects to the first internal Type-C interface N1 and enters the data input mode. The video data can be transmitted to the VR device through the first internal Type-C interface N1, the video switch, and the external Type-C interface N0; if the external device is a current sink device, such as a projection device, the power supply controller sends an input selection signal (e.g., a low level signal) to the video switch by selecting the output port SEL, and the video switch connects to the second internal Type-C interface N2 and enters the data output mode. The video data of the external device can be transmitted to the projection screen through the external Type-C interface N0, the video switch, and the second internal Type-C interface N2. The Type-C connector provided in the embodiment of the present disclosure only reserves one external Type-C interface N0 in the car, which can meet the screen projection function and VR function, thereby reducing the number of reserved interfaces in the car and solving the technical problem of the large number of reserved interfaces in the car.

[0047] In some embodiments, Figure 2 As shown, the Type-C connector may also include a multiplexer (MUX), and the bidirectional data port of the external Type-C interface N0 is connected to the first external data port of the video switch through the multiplexer. The power supply controller also includes an I2C (Inter Integrated Circuit) output port.

[0048] The multiplexer includes an I2C input port, a second external data port, and an internal data port. The second external data port of the multiplexer is connected to the bidirectional data port of the external Type-C interface N0, the internal data port of the multiplexer is connected to the first external data port of the video switch, and the I2C input port of the multiplexer is connected to the I2C output port of the power supply controller through a lead. The multiplexer can adjust the signal misorder caused by the forward and reverse insertion of the Type-C plug of the external device to achieve the forward and reverse insertion of the external device. The multiplexer can also be set on a printed circuit board with the external Type-C interface N0, the power supply controller, the video switch, the first internal Type-C interface N1, and the second internal Type-C interface N2, and the lead between the I2C input port and the I2C output port can be integrated into the printed circuit board.

[0049] The pin signal definition of Type-C interface is as follows Figure 3 As shown, the pin signal definition of Type-C plug is as follows Figure 4 shown.

[0050] Vbus is the power supply. The Type-C interface and Type-C plug each have four pins for Vbus, corresponding to Figure 2 VCC (Volt Current Condenser, supply voltage) in.

[0051] GND is the signal ground. The Type-C interface and Type-C plug each have four GND pins.

[0052] D+ and D- are a pair of differential signals of USB2.0. The Type-C interface has two pairs, while the Type-C plug has only one pair.

[0053] RX1+, RX1-, TX1+, TX1- and RX2+, RX2-, TX2+, TX2- are two sets of differential signals of USB3.0, RX is data reception, TX is data transmission, corresponding to Figure 2 DP_D0, DP_D1, DP_D2, DP_D3 in .

[0054] CC1 and CC2 are signals for configuring the channel, which are used to detect whether the plug is inserted in the forward or reverse direction. Discovering and configuring Vbus can also provide USB power supply mode. The Type-C interface has two CC pins, and the Type-C plug has only one CC pin.

[0055] Vconn is a signal that is only available on the Type-C plug. When there is a chip in the cable connected to Type-C, the Vconn pin is used to power the chip in the cable (usually 3.3V or 5V). At this time, a CC pin of the Type-C interface will provide power.

[0056] SBU1 and SBU2 are signals used to transmit auxiliary functions, corresponding to Figure 2 in AUX.

[0057] When the Type-C plug is inserted correctly, some pins are connected as follows Figure 5 As shown, the CC of the Type-C plug is connected to CC1 of the Type-C interface, and the Vconn of the Type-C plug is connected to CC2 of the Type-C interface. The power supply controller detects that it is plugged in correctly, and sends a corresponding control signal to the multiplexer through the I2C port to close the four switches on the multiplexer. A2, A3, B10, and B11 of the Type-C plug are respectively connected to A2, A3, B10, and B11 of the Type-C interface, and are connected to the video switch through the multiplexer.

[0058] When the Type-C plug is inserted backwards, some pins are connected as follows Figure 6 As shown, the CC of the Type-C plug is connected to CC2 of the Type-C interface, and the Vconn of the Type-C plug is connected to CC1 of the Type-C interface. The power supply controller detects that it is reversely plugged in, and sends a corresponding control signal to the multiplexer through the I2C port to close the four switches under the multiplexer. A2, A3, B10, and B11 of the Type-C plug are respectively connected to B2, B3, A10, and A11 of the Type-C interface, and are connected to the video switch through the multiplexer.

[0059] In some embodiments, the Type-C connector may further include a first signal repeater (Redriver), and the second external data port of the multiplexer is connected to the bidirectional data port of the external Type-C interface through the first signal repeater. If the length of the connecting cable between the external device and the external Type-C interface N0 reaches 2 to 3 meters, it is a long-distance transmission for the DP signal. The first signal repeater can compensate for the transmission loss of the DP signal on the line to solve the loss problem of the DP signal in long-distance transmission.

[0060] In some embodiments, the Type-C connector may further include a switching circuit, the power supply controller may further include a power supply port, and the external Type-C interface may further include a power supply port. The power supply port of the power supply controller is connected to the power supply port of the external Type-C interface through a switching circuit. The switching circuit may adopt a MOS (Metal Oxide Semiconductor) switching circuit. When the power supply controller recognizes that the external device is a charging device by configuring the channel port, it can control the MOS switching circuit to close, and output the corresponding voltage and current to the external device through the power supply port to charge the external device.

[0061] The power supply controller also supports fast charging mode. Through the Power Delivery protocol, the power supply controller can fast charge the external device when it recognizes that the external device complies with the fast charging protocol by configuring the channel port. The PD protocol can be implemented with the USB Type-C interface. The output can be divided into 5V-2A, 12V-1.5A, 12V-3A, 12V-5A, 20V-3A, 20V-5A and other schemes. The maximum power can reach 100W, which can not only be used to charge mobile phones, but also to power laptops or monitors.

[0062] In some embodiments, the external Type-C interface further includes a first USB port, and the power supply controller further includes a second USB port. The first USB port of the external Type-C interface is connected to the second USB port of the power supply controller. By connecting the first USB port of the external Type-C interface and the second USB port of the power supply controller via a USB2.0 transmission line, the firmware of the power supply controller can be upgraded via the USB2.0 transmission line, and the charging protocol can be communicated, so as to facilitate subsequent support for more peripherals.

[0063] like Figure 7 As shown, the embodiment of the present disclosure further provides a video transmission system, including a processing chip and the Type-C connector provided in the above embodiment, the processing chip includes a second data output port and a second data input port. The second data output port of the processing chip is connected to a third internal Type-C interface N3, the second data input port of the processing chip is connected to a fourth internal Type-C interface N4, the third internal Type-C interface N3 is connected to the first internal Type-C interface N1 through a cable, and the fourth internal Type-C interface N4 is connected to the second internal Type-C interface N2 through a cable.

[0064] If the external device is a VR device, the video switch is connected to the first internal Type-C interface N1, and the video data sent by the processing chip is transmitted to the VR device through the third internal Type-C interface N3, the first internal Type-C interface N1, the video switch, and the external Type-C interface N0; if the external device is a screen projection device, the video switch is connected to the second internal Type-C interface N2, and the video data of the external device is transmitted to the processing chip through the external Type-C interface N0, the video switch, the second internal Type-C interface N2, and the fourth internal Type-C interface N4. The video transmission system provided by the embodiment of the present disclosure only reserves one external Type-C interface N0 in the car, which can meet the screen projection function and VR function, thereby reducing the number of reserved interfaces in the car.

[0065] In some embodiments, a second signal repeater and a third signal repeater are also included. The second data output port of the processing chip is connected to the third internal Type-C interface N3 through the second signal repeater, and the processing chip outputs the video signal from the third internal Type-C interface N3 through the second signal repeater to achieve the output of the video signal. The second data input port of the processing chip is connected to the fourth internal Type-C interface N4 through the third signal repeater, and the processing chip receives the video signal from the fourth internal Type-C interface N4 through the third signal repeater to achieve the input of the video signal. In the overall design of the vehicle, the processing chip may be far away from the third internal Type-C interface N3 and the fourth internal Type-C interface N4. The second signal repeater can compensate for the transmission loss of the video output signal on the line, and the third signal repeater can compensate for the transmission loss of the video input signal on the line to solve the loss problem of long-distance transmission of the DP signal.

[0066] In some embodiments, the processing chip is a system on chip (SOC). SOC is a system-level chip that integrates multiple functional modules, each of which is designed with a hardware description language program and then implemented by a circuit in the SOC.

[0067] The present disclosure also provides a vehicle, including the above-mentioned video transmission system. The vehicle provided by the embodiment of the present disclosure has the same technical features as the Type-C connector and the video transmission system provided by the above-mentioned embodiment, so it can also solve the same technical problems and achieve the same technical effects.

[0068] In some embodiments, the external Type-C interface of the Type-C connector is set on the air-conditioning screen panel, or on the central control screen panel, so that users can easily find the external Type-C interface and connect external devices.

[0069] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0070] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A Type-C connector, characterized in that: It includes an external Type-C interface, a power supply controller, a video switch, a first internal Type-C interface, and a second internal Type-C interface; The power supply controller includes a configuration channel input port and a strobe output port; The video switch includes a strobe input port, a first external data port, a first data input port and a first data output port; The external Type-C interface includes a bidirectional data port and a configuration channel output port, the first internal Type-C interface includes a first data port, and the second internal Type-C interface includes a second data port; The configuration channel input port of the power supply controller is connected to the configuration channel output port of the external Type-C interface, and the strobe output port of the power supply controller is connected to the strobe input port of the video switch; The first external data port of the video switch is connected to the bidirectional data port of the external Type-C interface, the first data input port of the video switch is connected to the first data port of the first internal Type-C interface, and the first data output port of the video switch is connected to the second data port of the second internal Type-C interface.

2. The Type-C connector according to claim 1, characterized in that: The Type-C connector further includes a multiplexer, and the bidirectional data port of the external Type-C interface is connected to the first external data port of the video switch through the multiplexer; the power supply controller further includes an I2C output port; The multiplexer includes an I2C input port, a second external data port and an internal data port, The second external data port of the multiplexer is connected to the bidirectional data port of the external Type-C interface, the internal data port of the multiplexer is connected to the first external data port of the video switch, and the I2C input port of the multiplexer is connected to the I2C output port of the power supply controller.

3. The Type-C connector according to claim 2, characterized in that: The Type-C connector also includes a first signal repeater, and the second external data port of the multiplexer is connected to the bidirectional data port of the external Type-C interface through the first signal repeater.

4. The Type-C connector according to any one of claims 1 to 3, characterized in that: The Type-C connector further includes a switch circuit, the power supply controller further includes a power supply port, and the external Type-C interface further includes a power supply port; The power supply port of the power supply controller is connected to the power supply port of the external Type-C interface through the switch circuit.

5. The Type-C connector according to claim 1, characterized in that: The external Type-C interface further includes a first USB port, and the power supply controller further includes a second USB port; The first USB port of the external Type-C interface is connected to the second USB port of the power supply controller.

6. A video transmission system, characterized in that: A device comprising a processing chip and a Type-C connector according to any one of claims 1 to 5, wherein the processing chip comprises a second data output port and a second data input port; The second data output port of the processing chip is connected to a third internal Type-C interface, and the second data input port of the processing chip is connected to a fourth internal Type-C interface; The third internal Type-C interface is connected to the first internal Type-C interface via a cable, and the fourth internal Type-C interface is connected to the second internal Type-C interface via a cable.

7. The video transmission system according to claim 6, characterized in that: Also included is a second signal repeater and a third signal repeater; The second data output port of the processing chip is connected to the third internal Type-C interface through the second signal repeater, and the processing chip outputs a video signal from the third internal Type-C interface through the second signal repeater; The second data input port of the processing chip is connected to the fourth internal Type-C interface through the third signal repeater, and the processing chip receives a video signal from the fourth internal Type-C interface through the third signal repeater.

8. The video transmission system according to claim 6, characterized in that: The processing chip is a system-on-chip chip.

9. A vehicle, characterized in that: Comprising a video transmission system as described in any one of claims 6 to 8.

10. The vehicle according to claim 9, characterized in that The external Type-C interface of the Type-C connector is arranged on the air conditioning screen panel or the central control screen panel.

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