Automobile display driving framework, signal transmission method, signal transmission time sequence and vehicle

Abstract

The invention discloses an automobile display driving framework, a signal transmission method, a signal transmission time sequence and a vehicle, relates to the technical field of vehicles, and aims at omitting a coding and deserializing chip and a power supply chip, simplifying the framework and reducing the cost. The automobile display driving framework comprises a control system, a first custom connector, a transmission line, a second custom connector and a display system. The control system is configured to output a plurality of sub-signals, wherein at least one sub-signal is transmitted in a DP or eDP protocol; the first custom connector comprises at least one DP or eDP interface; the at least one first custom connector is connected with the control system; the transmission line comprises a plurality of connecting lines; the first custom connector is connected with the transmission line; the second custom connector comprises at least one DP or eDP interface; the second custom connector is connected with an adaptive connecting line; and the display system is connected with the plurality of second sub-transmission ports of the second custom connector, and the display system is configured to receive the to-be-displayed signal and display the to-be-displayed signal under the control of the to-be-displayed signal.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to an automobile display drive architecture, a signal transmission method and transmission timing, and a vehicle. Background Art

[0002] With the development of vehicle technology, people have higher and higher requirements for in-vehicle displays; high-resolution and high-refresh-rate in-vehicle display devices have appeared on the market, which has brought new challenges to the driving of in-vehicle display devices. Summary of the invention

[0003] The technical problem solved by the present application is: how to omit the serial encoding and decoding chip and its related power supply chip in the automobile display driver architecture, simplify the automobile display driver architecture, and reduce costs.

[0004] On the one hand, the present application provides an automotive display driver architecture, including a control system, at least one first custom connector, at least one transmission line, at least one second custom connector, and at least one display system; the control system is configured to output at least one group of signals to be displayed, the signals to be displayed include multiple sub-signals, and at least one of the multiple sub-signals is transmitted using the DP or eDP protocol; the first custom connector includes multiple first sub-transmission ports and multiple second sub-transmission ports respectively corresponding to multiple sub-signals in a group of signals to be displayed, and the multiple first sub-transmission ports and the multiple second sub-transmission ports each include at least one DP or eDP interface corresponding to at least one sub-signal transmitted using the DP or eDP protocol; at least one first custom connector The multiple first sub-transmission ports are connected to the control system; the transmission line includes multiple connecting lines; the multiple connecting lines are respectively connected to the second sub-transmission ports adapted in the first custom connector; the second custom connector includes multiple first sub-transmission ports and multiple second sub-transmission ports respectively corresponding to multiple sub-signals in a group of signals to be displayed, and the multiple first sub-transmission ports and the multiple second sub-transmission ports each include at least one DP or eDP interface corresponding to at least one sub-signal transmitted in the DP or eDP protocol; the multiple first sub-transmission ports of the second custom connector are respectively connected to the adapted connecting lines; the display system is connected to the multiple second sub-transmission ports of the second custom connector, and the display system is configured to receive the signals to be displayed and display under the control of the signals to be displayed.

[0005] The beneficial effects of some embodiments of the present application are as follows: by setting a first custom connector and a second custom connector, both of which are custom physical interfaces, the multiple sub-transmission ports in the connectors correspond to the transmission of multiple sub-signals, thereby realizing multiple sub-signals output by the control system, such as video sub-signals that require high-speed transmission and control command sub-signals that do not require high-speed transmission, interrupt sub-signals, etc., which can be directly transmitted in parallel over long distances; each sub-signal does not need to be serialized through a serialization chip and then deserialized through a deserialization chip, thereby realizing direct driving of the display system by each sub-signal, shortening the transmission path of each sub-signal, and at the same time improving the transmission rate of each sub-signal; the serialization and deserialization chips and their related power supply chips in the traditional solution are omitted, thereby simplifying the automotive display driver architecture and greatly reducing costs; and the first custom connector and the second custom connector can be reused, with a wide range of applications.

[0006] In some embodiments, the multiple sub-signals of the signal to be displayed include a video sub-signal, which is transmitted to the display system via the DP or eDP interface of the first custom connector and the DP or eDP interface of the second custom connector using the DP or eDP protocol.

[0007] In some embodiments, the control system includes a system-level chip, which is connected to multiple first sub-transmission ports of at least one first custom connector, and the system-level chip is configured to output at least one group of signals to be displayed, and at least one sub-signal of the signals to be displayed is transmitted using the DP or eDP protocol.

[0008] A system-on-chip is a purpose-built integrated circuit that contains all the contents of a complete system with embedded software.

[0009] In some embodiments, the control system includes a system-level chip and at least one first conversion chip, and the DP or eDP interfaces of multiple first sub-transmission ports of the first custom connector are connected to the system-level chip through the first conversion chip; the system-level chip is configured to output at least one set of initial signals to be displayed, the initial signals to be displayed include multiple initial sub-signals, and at least one initial sub-signal is transmitted with an initial protocol; the first conversion chip is configured to receive the initial sub-signal transmitted with the initial protocol and convert it into a sub-signal transmitted with the DP protocol.

[0010] In some embodiments, the control system includes a system-level chip and at least one first conversion chip. When the control system is configured to output multiple groups of signals to be displayed, the system-level chip includes at least one group of first output ports and at least one group of second output ports. The DP or eDP interfaces of multiple first sub-transmission ports of at least one first custom connector are respectively connected to at least one group of second output ports of the system-level chip through the first conversion chip; at least one first custom connector is correspondingly connected to at least one group of first output ports of the system-level chip; the system-level chip is configured to output a group of initial signals to be displayed through a group of second output ports and output a group of signals to be displayed through a group of first output ports; the initial signals to be displayed include multiple initial sub-signals, and at least one initial sub-signal is transmitted with an initial protocol; the first conversion chip is configured to receive the initial sub-signal transmitted with the initial protocol and convert it into a sub-signal transmitted with the DP protocol.

[0011] In some embodiments, the display system includes a first vehicle-mounted display device, which is connected to a second custom connector, wherein the first vehicle-mounted display device is configured to drive the display using a DP or eDP protocol.

[0012] In some embodiments, at least one display system includes a second vehicle-mounted display device and a second conversion chip, and the DP or eDP interfaces of multiple second sub-transmission ports of the second custom connector are connected to the second vehicle-mounted display device through the second conversion chip; the second conversion chip is configured to receive a sub-signal transmitted in the DP or eDP protocol, and convert it into an initial sub-signal transmitted in the initial protocol; wherein the second vehicle-mounted display device is configured to drive the display in the initial protocol.

[0013] In some embodiments, the signal to be displayed includes a video sub-signal, a DP control sub-signal, an interrupt sub-signal, a control command sub-signal, and a hot plug sub-signal; the multiple first sub-transmission ports and the multiple second sub-transmission ports of the first custom connector all include a DP or eDP interface, a pair of DP control sub-signal transmission ports, a pair of control command sub-signal transmission ports, a hot plug sub-signal transmission port, and an interrupt sub-signal transmission port, and the DP or eDP interface includes at least one pair of video sub-signal transmission ports for transmitting video sub-signals; a pair of DP control sub-signal transmission ports for transmitting DP control sub-signals; a pair of control command sub-signal transmission ports for transmitting control command sub-signals; the hot plug sub-signal transmission port is used to transmit hot plug sub-signals; and the interrupt sub-signal transmission port is used to transmit interrupt sub-signals.

[0014] In some embodiments, the signal to be displayed also includes a backlight on sub-signal and a backlight brightness adjustment sub-signal; the multiple first sub-transmission ports and the multiple second sub-transmission ports of the first custom connector also include a backlight on sub-signal transmission port and a backlight brightness adjustment sub-signal transmission port, the backlight on sub-signal transmission port is used to transmit the backlight on sub-signal; the backlight brightness adjustment sub-signal transmission port is used to transmit the backlight brightness adjustment sub-signal.

[0015] In some embodiments, the DP or eDP interface includes four pairs of video sub-signal transmission ports.

[0016] In some embodiments, the plurality of connecting lines of the transmission line are coaxial connecting lines.

[0017] On the other hand, the present application provides a signal transmission method of an automobile display driver architecture, which is applied to the automobile display driver architecture described above. The signal transmission method of the automobile display driver architecture includes: the control system outputs at least one group of signals to be displayed, the signals to be displayed include multiple sub-signals, and at least one of the multiple sub-signals is transmitted using the DP or eDP protocol; the multiple sub-signals of the signals to be displayed output by the control system are transmitted in parallel to the display system through a first custom connector, a transmission line, and a second custom connector; the display system receives the signals to be displayed and displays them under the drive of the signals to be displayed.

[0018] By setting a first custom connector and a second custom connector, both of which are custom physical interfaces, the multiple sub-transmission ports in the connectors correspond to the transmission of multiple sub-signals, thereby realizing multiple sub-signals output by the control system, such as video sub-signals that require high-speed transmission and control command sub-signals that do not require high-speed transmission, interrupt sub-signals, etc., which can be directly transmitted in parallel over long distances; each sub-signal does not need to be serialized through a serialization chip and then deserialized through a deserialization chip, thereby realizing direct driving of the display system by each sub-signal, shortening the transmission path of each sub-signal, and at the same time improving the transmission rate of each sub-signal.

[0019] On the other hand, the present application provides a transmission timing of a signal to be displayed, which is applied to the automotive display driver architecture described above. The signal to be displayed received by the display system includes a video sub-signal, an interrupt sub-signal, and a control command sub-signal. The display system also receives a power-on signal; the time period in which the working level of the power-on signal is located is the first time period, and the working level of the interrupt sub-signal is in the first time period; the working level of the video sub-signal is in the first time period; and the working level of the control command sub-signal is in the first time period.

[0020] The transmission timing of the signal to be displayed can realize the DP / EDP protocol transmission that meets the requirements of the automotive display driver architecture. The customized data timing transmission is transmitted in parallel, without the need for serialization by the serializer, and has higher real-time and accuracy. Since the data is not serialized, the requirements for wires are lower, and the radiation emission and anti-interference requirements are lower.

[0021] In some embodiments, the signal to be displayed also includes a backlight on sub-signal and a backlight brightness adjustment sub-signal; the time period in which the working level of the backlight brightness adjustment sub-signal is located is the second time period; the working level of the backlight on sub-signal is in the second time period; wherein the second time period is included in the first time period.

[0022] On the other hand, the present application provides a vehicle, comprising the automotive display driving architecture as described above.

[0023] By setting a first custom connector and a second custom connector, both of which are custom physical interfaces, multiple sub-transmission ports in the connectors correspond to the transmission of multiple sub-signals, thereby realizing multiple sub-signals output by the control system, such as video sub-signals that require high-speed transmission and control command sub-signals that do not require high-speed transmission, interrupt sub-signals, etc., which can be directly transmitted in parallel over long distances; each sub-signal does not need to be serialized through a serialization chip and then deserialized through a deserialization chip, thereby realizing direct driving of the display system by each sub-signal, shortening the transmission path of each sub-signal, and at the same time improving the transmission rate of each sub-signal; the serialization and deserialization chips and their related power supply chips in the traditional solution are omitted, simplifying the automotive display driver architecture and greatly reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1A A schematic diagram of a display driver architecture structure provided in an embodiment of the present application;

[0025] Figure 1B A schematic diagram of the planar structure of a serializer chip provided in an embodiment of the present application;

[0026] Figure 2 A schematic diagram of an automotive display driver architecture provided in an embodiment of the present application;

[0027] Figure 3 A schematic diagram of another automotive display driver architecture provided in an embodiment of the present application;

[0028] Figure 4 A schematic diagram of another automotive display driver architecture provided in an embodiment of the present application;

[0029] Figure 5 A schematic diagram of another automotive display driver architecture provided in an embodiment of the present application;

[0030] Figure 6 A schematic diagram of another automotive display driver architecture provided in an embodiment of the present application;

[0031] Fig. 7A A matching circuit diagram of a DP protocol provided in an embodiment of the present application;

[0032] Figure 7B A matching circuit diagram of an eDP protocol provided in an embodiment of the present application;

[0033] Fig. 8A A schematic diagram of a DP protocol transmission channel provided in an embodiment of the present application;

[0034] Figure 8B A schematic diagram of an eDP protocol transmission channel provided in an embodiment of the present application;

[0035] Fig. 9 A first custom connector pin diagram provided in an embodiment of the present application;

[0036] Fig.10 A first custom connector pin diagram provided in another embodiment of the present application;

[0037] Fig.11 A schematic diagram of a DP protocol universal standard interface definition provided in an embodiment of the present application;

[0038] Fig.12 A schematic diagram of a Type-c universal standard interface definition provided in an embodiment of the present application;

[0039] Fig.13 A step diagram of a signal transmission method for an automotive display drive architecture provided in an embodiment of the present application;

[0040] Fig.14 A DP protocol or eDP protocol standard transmission timing diagram provided in an embodiment of the present application;

[0041] Fig.15 A first custom connector transmission timing diagram provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] In order to enable ordinary persons in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application 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 interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0044] As vehicles become more intelligent, they are equipped with more and more high-resolution on-board displays inside the vehicles. These on-board displays provide a variety of critical information that drivers need to operate the vehicle safely and efficiently.

[0045] The vehicle's control chip integrates multiple drive control ports for on-board display devices, including the DP (DisplayPort, digital video transmission) protocol port, eDP (Embedded Display Port, embedded digital video transmission) protocol port, MIPI (Mobile Industry Processor Interface, mobile industry processor interface) protocol port, LVDS (Low-Voltage Differential Signaling, low-voltage differential signal) protocol port, etc.; the DP protocol port, eDP protocol port, MIPI protocol port, and LVDS protocol port are different interface standards, and they differ in application, performance, and physical interface.

[0046] Among them, the DP protocol port is a digital display interface that supports high-resolution video and audio transmission. It is used to connect computers or other devices to display devices such as monitors or TVs. It can be used for both internal display connections and external display connections. The eDP protocol port is an internal digital display interface based on the DP architecture and protocol. It is an extension of the DP application architecture and protocol in the embedded direction. The eDP protocol is fully compatible with the DP protocol and is used for internal display connections. It is widely used in various products with embedded display panels, such as all-in-one computers, laptops, tablets, etc.; currently most vehicle-mounted display devices use the DP protocol or the eDP protocol to transmit video signals; the MIPI protocol port is an interface standard for mobile devices and embedded systems, which standardizes the internal interfaces of mobile devices such as cameras, displays, basebands, and radio frequency interfaces; the LVDS protocol port is a low-voltage differential signal transmission interface used to reduce electromagnetic interference during data transmission and is widely used in LCD displays and embedded systems.

[0047] Since the LVDS protocol and MIPI protocol cannot be directly transmitted over long distances through the automotive wiring harness, it is necessary to add additional conversion chips, such as FPD-LINK (serialization and deserialization) chips or GMSL (Gigabit Multimedia Serial Link) chips. The serializer chip in the conversion chip is used to serialize the LVDS protocol and MIPI protocol into the FPD-LINK protocol or GMSL protocol. After long-distance transmission, the FPD-LINK protocol or GMSL protocol is deserialized into the corresponding LVDS protocol and MIPI protocol through the deserializer chip in the conversion chip, and finally given to the corresponding vehicle display device.

[0048] Although the DP protocol can be transmitted over long distances in consumer electronic products, the DP protocol standard cannot meet some specific data signal transmission requirements of automobiles. For example, it cannot meet the transmission of data such as I2C (Inter-Integrated Circuit), INT (INTERRUPT), and ERR (Error). Therefore, it is also necessary to add additional conversion chips, such as FPD-LINK chips or GMSL chips. The serializer chip in the conversion chip is used to serialize the DP protocol into the FPD-LINK protocol or the GMSL protocol. After long-distance transmission, the FPD-LINK protocol or the GMSL protocol is deserialized into the corresponding DP protocol through the deserializer chip in the conversion chip, and finally given to the corresponding vehicle display device.

[0049] At present, the specific method of driving the vehicle-mounted display device 5 by means of encoding and decoding is as follows: Figure 1AAs shown, the signal 2 output by the control chip 1 is transmitted through the DP protocol and / or the MIPI protocol and / or the LVDS protocol, etc. The control chip 1 transmits the DP protocol and / or the MIPI protocol and / or the LVDS protocol to the conversion chip 3, such as the serializer chip 3-1 in the FPD-LINK chip or the GMSL chip; the serializer chip 3-1 serializes the received DP protocol and / or the MIPI protocol and / or the LVDS protocol into the FPD-LINK protocol or the GMSL protocol, and transmits the FPD-LINK protocol or the GMSL protocol through The automotive wiring harness 4, such as a coaxial cable or twisted pair cable, is transmitted over a long distance to the deserializer chip 3-2 in the conversion chip 3; the deserializer chip 3-2 deserializes the received FPD-LINK protocol or GMSL protocol into the corresponding DP protocol and / or MIPI protocol and / or LVDS protocol, etc., and transmits the deserialized DP protocol and / or MIPI protocol and / or LVDS protocol to the vehicle display device 5; after receiving the DP protocol and / or MIPI protocol and / or LVDS protocol, the vehicle display device 5 outputs the display screen corresponding to the signal 2. Figure 1B As shown, it is a schematic diagram of the planar structure of the serializer chip 3-1.

[0050] This serialization and deserialization driving method is very complicated. Signal 2 needs to pass through the following link: control chip 1 → serializer chip 3-1 → vehicle wiring harness 4 → deserializer chip 3-2 → vehicle display device 5 before it can reach the vehicle display device 5 for display. The transmission path is long, the cost is high, and the development difficulty is great.

[0051] In some embodiments, Figure 2As shown, the present application provides an automotive display driver architecture 100, including a control system 10, at least one first custom connector 30, at least one transmission line 50, at least one second custom connector 40, and at least one display system 20; the control system 10 is configured to output at least one group of to-be-displayed signals 60, the to-be-displayed signals 60 including a plurality of sub-signals 61, at least one of the plurality of sub-signals 61 being transmitted in accordance with the DP or eDP protocol; the first custom connector 30 includes a plurality of first sub-transmission ports 31 and a plurality of second sub-transmission ports 32 respectively corresponding to a plurality of sub-signals 61 in a group of to-be-displayed signals 60, the plurality of first sub-transmission ports 31 and the plurality of second sub-transmission ports 32 both including at least one DP or eDP interface corresponding to at least one sub-signal 61 transmitted in accordance with the DP or eDP protocol; the plurality of first sub-transmission ports 31 of the at least one first custom connector 30 A control system 10 is connected; the transmission line 50 includes a plurality of connection lines 51, and the plurality of connection lines 51 include a DP coaxial line; the plurality of connection lines 51 are respectively connected to the second sub-transmission port 32 adapted in the first custom connector 30; the second custom connector 40 includes a plurality of first sub-transmission ports 41 and a plurality of second sub-transmission ports 42 respectively corresponding to a plurality of sub-signals 61 in a group of signals to be displayed 60, and the plurality of first sub-transmission ports 41 and the plurality of second sub-transmission ports 42 each include at least one DP or eDP interface corresponding to at least one sub-signal 61 transmitted in accordance with the DP or eDP protocol; the plurality of first sub-transmission ports 41 of the second custom connector 40 are respectively connected to the adapted connection lines 51; the display system 20 is connected to the plurality of second sub-transmission ports 42 of the second custom connector 40, and the display system 20 is configured to receive the signal 60 to be displayed, and to display under the control of the signal 60 to be displayed.

[0052] For example, Figure 2 As shown, the control system 10 includes, for example, three groups of signal transmission interfaces 11, each group of signal transmission interfaces 11 includes multiple signal output interfaces 11-N, for example, four signal output interfaces 11-N, namely a first signal output interface 11-1, a second signal output interface 11-2, a third signal output interface 11-3, and a fourth signal output interface 11-4; the control system 10 can output a group of signals to be displayed 60 through a group of signal transmission interfaces 11, and three groups of signal transmission interfaces 11 output three groups of signals to be displayed 60.

[0053] For example, Figure 2As shown, a group of signals to be displayed 60 includes multiple sub-signals 61, for example, four sub-signals 61, namely a first sub-signal 61-1, a second sub-signal 61-2, a third sub-signal 61-3, and a fourth sub-signal 61-4; one sub-signal 61 is transmitted through a signal output interface 11-N adapted thereto through an adapted signal protocol; it can be understood that the first sub-signal 61-1 is transmitted through the first signal output interface 11-1 with a transmission protocol adapted to the first sub-signal 61-1; the second sub-signal 61-2 is transmitted through the second signal output interface 11-2 with a transmission protocol adapted to the second sub-signal 61-2; the third sub-signal 61-3 is transmitted through the third signal output interface 11-3 with a transmission protocol adapted to the third sub-signal 61-3; the fourth sub-signal 61-4 is transmitted through the fourth signal output interface 11-4 with a transmission protocol adapted to the fourth sub-signal 61-4. "Adaptation" is interpreted as the specific sub-signal 61 being output through the specific signal output interface 11-N and being transmitted through a specific signal protocol. It is understandable that the specific sub-signal 61 can only be output through the specific signal output interface 11-N and be transmitted through a specific signal protocol, and the specific sub-signal 61 cannot be output through other signal output interfaces 11-N, nor can it be transmitted through other signal protocols.

[0054] For example, Figure 2As shown, the automobile display driver architecture 100 includes, for example, three first custom connectors 30, one first custom connector 30 corresponds to a group of signal transmission interfaces 11, and the first custom connector 30 includes a plurality of first sub-transmission ports 31 and a plurality of second sub-transmission ports 32 respectively corresponding to a plurality of sub-signals 61 in a group of signals to be displayed 60, for example, including four first sub-transmission ports 31 and corresponding four second sub-transmission ports 32, the four first sub-transmission ports 31 are respectively a first first sub-transmission port 31-1, a second first sub-transmission port 31-2, a third first sub-transmission port 31-3, and a fourth first sub-transmission port 31-4; the four second sub-transmission ports 32 are respectively a first second sub-transmission port 32-1, a second second sub-transmission port 32-2, a third second sub-transmission port 32-3, and a fourth second sub-transmission port 32-4. The first sub-transmission port 31 and the second sub-transmission port 32 of the first custom connector 30 correspond one to one, that is, the first first sub-transmission port 31-1 of the first custom connector 30 is correspondingly connected to the first second sub-transmission port 32-1; the second first sub-transmission port 31-2 is correspondingly connected to the second second sub-transmission port 32-2; the third first sub-transmission port 31-3 is correspondingly connected to the third second sub-transmission port 32-3; the fourth first sub-transmission port 31-4 is correspondingly connected to the fourth second sub-transmission port 32-4; ​​the multiple first sub-transmission ports 31 of the first custom connector 30 are respectively connected to the multiple adapted signal output interfaces 11-N, that is, the first first sub-transmission port 31-1 is correspondingly connected to the first signal output interface 11-1; the second first sub-transmission port 31-2 is correspondingly connected to the second signal output interface 11-2; the third first sub-transmission port 31-3 is correspondingly connected to the third signal output interface 11-3; the fourth first sub-transmission port 31-4 is correspondingly connected to the fourth signal output interface 11-4.

[0055] For example, Figure 2As shown, the automobile display driver architecture 100 includes, for example, three second custom connectors 40, one second custom connector 40 corresponds to one first custom connector 30, and the second custom connector 40 includes a plurality of first sub-transmission ports 41 and a plurality of second sub-transmission ports 42 respectively corresponding to a plurality of sub-signals 61 in a group of signals to be displayed 60, for example, including four first sub-transmission ports 41 and corresponding four second sub-transmission ports 42; the four first sub-transmission ports 41 are respectively a first first sub-transmission port 41-1, a second first sub-transmission port 41-2, a third first sub-transmission port 41-3, and a fourth first sub-transmission port 41-4; the four second sub-transmission ports 42 are respectively a first second sub-transmission port 42-1, a second second sub-transmission port 42-2, a third second sub-transmission port 42-3, and a fourth second sub-transmission port 42-4. The first sub-transmission port 41 and the second sub-transmission port 42 of the second custom connector 40 correspond to each other one by one, that is, the first first sub-transmission port 41-1 of the second custom connector 40 is connected to the first second sub-transmission port 42-1; the second first sub-transmission port 41-2 is connected to the second second sub-transmission port 42-2; the third first sub-transmission port 41-3 is connected to the third second sub-transmission port 42-3; the fourth first sub-transmission port 41-4 is connected to the fourth second sub-transmission port 42-4; the multiple second sub-transmission ports 32 of the first custom connector 30 are respectively connected to the multiple first sub-transmission ports 41 adapted in the second custom connector 40 through the connecting wires 51 in the transmission line 50, that is, the first custom connector 30 is connected to the first custom connector 40 through the connecting wires 51 in the transmission line 50. The first second sub-transmission port 32-1 of the connector 30 is connected to the first first sub-transmission port 41-1 of the second custom connector 40 through an adaptive connecting line 51; the second second sub-transmission port 32-2 of the first custom connector 30 is connected to the second first sub-transmission port 41-2 of the second custom connector 40 through an adaptive connecting line 51; the third second sub-transmission port 32-3 of the first custom connector 30 is connected to the third first sub-transmission port 41-3 of the second custom connector 40 through an adaptive connecting line 51; the fourth second sub-transmission port 32-4 of the first custom connector 30 is connected to the fourth first sub-transmission port 41-4 of the second custom connector 40 through an adaptive connecting line 51.

[0056] It should be noted that in order to facilitate transmission, reduce the area occupied by multiple connecting lines 51, and avoid the disorderly distribution of multiple connecting lines 51, four connecting lines 51 are combined into one transmission line 50. It can be understood that the multiple connecting lines 51 in the transmission line 50 are insulated from each other and do not affect each other.

[0057] For example, Figure 2As shown, the automobile display driving architecture 100 includes, for example, three display systems 20, one display system 20 corresponds to a second custom connector 40, and the display system 20 includes multiple signal input interfaces 21, for example, four signal input interfaces 21, namely a first signal input interface 21-1, a second signal input interface 21-2, a third signal input interface 21-3, and a fourth signal input interface 21-4; the multiple signal input interfaces 21 are respectively connected to multiple second sub-transmission ports 42 adapted in the second custom connector 40, that is, the first signal input interface 21-1 is correspondingly connected to the first second sub-transmission port 42-1 in the second custom connector 40; the second signal input interface 21-2 is correspondingly connected to the second second sub-transmission port 42-2 in the second custom connector 40; the third signal input interface 21-3 is correspondingly connected to the third second sub-transmission port 42-3 in the second custom connector 40; the fourth signal input interface 21-4 is correspondingly connected to the fourth second sub-transmission port 42-4 in the second custom connector 40; the display system 20 displays in response to the received signal 60 to be displayed.

[0058] For example, the matching circuit diagram of the DP protocol is as follows: Fig. 7A As shown, the matching circuit diagram of the eDP protocol is as follows Figure 7B As shown, the matching circuit requirements of the DP protocol and the eDP protocol are consistent, so it can be seen that the DP protocol is fully compatible with the eDP protocol. Since the DP protocol is fully compatible with the eDP protocol, both the DP protocol and the eDP protocol can be transmitted through the DP interface, or both the DP protocol and the eDP protocol can be transmitted through the eDP interface.

[0059] For example, Figure 2 As shown, the first signal output interface 11-1 can be a DP or eDP interface; the first first sub-transmission port 31-1 of the first custom connector 30 can also be a DP or eDP interface, and the first second sub-transmission port 32-1 of the first custom connector 30 can also be a DP or eDP interface; the first first sub-transmission port 41-1 of the second custom connector 40 can also be a DP or eDP interface, and the first second sub-transmission port 42-1 of the second custom connector 40 can also be a DP or eDP interface; the first signal input interface 21-1 of the display system 20 can also be a DP or eDP interface. The sub-signal 61 transmitted in the DP or eDP protocol in the to-be-displayed signal 60 output by the control system 10 is transmitted through the line where the above-mentioned DP or eDP interface is located.

[0060] Some embodiments of the present disclosure set a first custom connector 30 and a second custom connector 40, both of which are custom physical interfaces. Multiple sub-transmission ports in the connectors correspond to the transmission of multiple sub-signals 61, so that the control system 10 can synchronously output multiple sub-signals 61. For example, the video sub-signal DP that requires high-speed transmission and the control command sub-signal i2c and interrupt sub-signal int that do not require high-speed transmission can be directly transmitted in parallel over a long distance; each sub-signal 61 does not need to be serialized by the serialization chip 3-1 and then deserialized by the deserialization chip 3-2, so that each sub-signal 61 can directly drive the display system 20, shorten the transmission path of each sub-signal 61, and at the same time, the transmission rate of each sub-signal 61 is also improved; the serialization and deserialization chips and their related power supply chips in the traditional solution are omitted, the automotive display driver architecture 100 is simplified, and the cost is greatly reduced; and the first custom connector 30 and the second custom connector 40 can be reused, which has a wide range of applications.

[0061] In some embodiments, Figure 3 As shown, the multiple sub-signals 61 of the signal to be displayed 60 include a video sub-signal DP, and the video sub-signal DP is transmitted to the display system 20 via the DP or eDP protocol through the DP or eDP interface of the first custom connector 30, such as the first first sub-transmission port 31-1 and the first second sub-transmission port 32-1 of the first custom connector 30, and the DP or eDP interface of the second custom connector 40, such as the first first sub-transmission port 41-1 and the first second sub-transmission port 42-1 of the second custom connector 40.

[0062] In some embodiments, Figure 3 As shown, the control system 10 includes a system-on-chip SOC, which is connected to multiple first sub-transmission ports 31 of at least one first custom connector 30. The system-on-chip SOC is configured to output at least one group of signals 60 to be displayed, and at least one sub-signal 61 of the signal 60 to be displayed is transmitted using the DP or eDP protocol.

[0063] Exemplarily, the system-on-chip SOC is an integrated circuit with a dedicated target, which contains a complete system and all the contents of the embedded software. The system-on-chip SOC is connected to, for example, three first custom connectors 30, and the system-on-chip SOC outputs, for example, three groups of signals to be displayed 60; one group of signals to be displayed 60 is transmitted through one first custom connector 30, wherein each group of signals to be displayed 60 has at least one sub-signal 61, such as a video sub-signal DP, which is directly transmitted using the DP or eDP protocol.

[0064] In some embodiments, Figure 3As shown, the display system 20 includes a first vehicle-mounted display device 22 , which is connected to a second custom connector 40 , wherein the first vehicle-mounted display device 22 is configured to drive the display using a DP or eDP protocol.

[0065] For example, Figure 3 As shown, at least one sub-signal 61 output by the system-on-chip SOC, such as a video sub-signal DP, is transmitted in DP or eDP protocol through the DP or eDP interface of the first custom connector 30 and the second custom connector 40. Specifically, at least one sub-signal 61 output by the system-on-chip SOC, such as a video sub-signal DP, is transmitted to the first first sub-transmission port 31-1 of the first custom connector 30 in DP or eDP protocol, and is transmitted over a long distance through the transmission line 50 by the first second sub-transmission port 32-1 of the first custom connector 30 to the first first sub-transmission port 41-1 of the second custom connector 40, and is transmitted to the first vehicle-mounted display device 22 by the first second sub-transmission port 42-1 of the second custom connector 40. The first vehicle-mounted display device 22 can be directly driven by the sub-signal 61 transmitted in DP or eDP protocol to display the screen. It can be understood that the first vehicle-mounted display device 22 includes at least one DP or eDP interface.

[0066] Exemplarily, since the DP protocol is fully compatible with the eDP protocol, the DP protocol and the eDP protocol can be transmitted through a DP interface, or the DP protocol and the eDP protocol can be transmitted through an eDP interface, and the sub-signal 61 output by the system-on-chip SOC and transmitted in the DP or eDP protocol can directly drive the first vehicle-mounted display device 22 having a DP or eDP interface, that is, after the DP protocol and the eDP protocol are transmitted to the display system 20 in the above manner, if the interface of the first vehicle-mounted display device 22 includes a DP or eDP interface, the DP protocol and the eDP protocol can directly drive the first vehicle-mounted display device 22.

[0067] The DP protocol / eDP (open source and free) is used as a display driver in the car. The first vehicle-mounted display device 22 uses a TCON chip that supports the DP or eDP protocol, which can save encoding and decoding chips and directly transmit the DP protocol / eDP protocol over long distances.

[0068] In some embodiments, Figure 4As shown, the control system 10 includes a system-on-chip SOC and at least one first conversion chip 70, and the DP or eDP interfaces of multiple first sub-transmission ports 31 of the first custom connector 30 are connected to the system-on-chip SOC through the first conversion chip 70; the system-on-chip SOC is configured to output at least one group of initial signals to be displayed 60', and the initial signals to be displayed 60' include multiple initial sub-signals 61', and at least one initial sub-signal 61' is transmitted with the initial protocol; the first conversion chip 70 is configured to receive the initial sub-signal 61' transmitted with the initial protocol, and convert it into a sub-signal 61 transmitted with the DP protocol.

[0069] Exemplarily, the initial protocol includes the LVDS protocol or the MIPI protocol; the first conversion chip 70 includes an LVDS to DP chip 71 or a MIPI to DP chip 72 .

[0070] Specifically, an initial sub-signal 61' output by the system-on-chip SOC, such as an initial video sub-signal DP', is transmitted to the LVDS to DP chip 71 via the LVDS protocol. The LVDS to DP chip 71 converts the initial sub-signal 61' transmitted via the LVDS protocol, such as the initial video sub-signal DP', into a sub-signal 61 transmitted via the DP protocol, such as a video sub-signal DP, and outputs the control system 10. It can be understood that, except for the initial sub-signal 61' transmitted via the LVDS protocol, which needs to be converted by the LVDS to DP chip 71, other initial sub-signals 61' output by the system-on-chip SOC do not need to be converted, and these initial sub-signals 61' are directly regarded as sub-signals 61 and output to the control system 10. The sub-signal 61 transmitted by the DP protocol, such as the video sub-signal DP, is transmitted to the first first sub-transmission port 31-1 of the first custom connector 30, and is transmitted over a long distance through the transmission line 50 by the first second sub-transmission port 32-1 of the first custom connector 30, and is transmitted to the first first sub-transmission port 41-1 of the second custom connector 40, and is transmitted to the first vehicle-mounted display device 22 by the first second sub-transmission port 42-1 of the second custom connector 40.

[0071] Alternatively, an initial sub-signal 61' output by the system-on-chip SOC, such as an initial video sub-signal DP', is transmitted to the MIPI to DP chip 72 via the MIPI protocol, and the MIPI to DP chip 72 converts the initial sub-signal 61' transmitted via the MIPI protocol, such as the initial video sub-signal DP', into a sub-signal 61 transmitted via the DP protocol, such as a video sub-signal DP, and outputs it to the control system 10; it can be understood that, except for the initial sub-signal 61' transmitted via the MIPI protocol, which needs to be converted by the MIPI to DP chip 72, other initial sub-signals 61' output by the system-on-chip SOC do not need to be converted, and these initial sub-signals 61' are directly regarded as sub-signals 61 and output to the control system 10. The sub-signal 61 transmitted by the DP protocol, such as the video sub-signal DP, is transmitted to the first first sub-transmission port 31-1 of the first custom connector 30, and is transmitted over a long distance through the transmission line 50 by the first second sub-transmission port 32-1 of the first custom connector 30, and is transmitted to the first first sub-transmission port 41-1 of the second custom connector 40, and is transmitted to the first vehicle-mounted display device 22 by the first second sub-transmission port 42-1 of the second custom connector 40.

[0072] It should be noted that the first first sub-transmission port 31-1 of the above-mentioned first custom connector 30 is a DP or eDP interface, and the first second sub-transmission port 32-1 of the first custom connector 30 is also a DP or eDP interface; the first first sub-transmission port 41-1 of the second custom connector 40 is also a DP or eDP interface, and the first second sub-transmission port 42-1 of the second custom connector 40 is also a DP or eDP interface; the first signal input interface 21-1 of the first vehicle display device 22 is also a DP or eDP interface.

[0073] In some embodiments, Figure 5As shown, the control system 10 includes a system-on-chip SOC and at least one first conversion chip 70. When the control system 10 is configured to output multiple groups of signals to be displayed 60, the system-on-chip SOC includes at least one group of first output ports 12 and at least one group of second output ports 13. The DP or eDP interfaces of multiple first sub-transmission ports 31 of at least one first custom connector 30 are respectively connected to at least one group of second output ports 13 of the system-on-chip SOC through the first conversion chip 70; at least one first custom connector 30 is correspondingly connected to at least one group of first output ports 12 of the system-on-chip SOC; the system-on-chip SOC is configured to output a group of initial signals to be displayed 60' through a group of second output ports 13, and output a group of signals to be displayed 60 through a group of first output ports 12; the initial signals to be displayed 60' include multiple initial sub-signals 61', and at least one initial sub-signal 61' is transmitted with an initial protocol; the first conversion chip 70 is configured to receive the initial sub-signal 61' transmitted with the initial protocol, and convert it into a sub-signal 61 transmitted with the DP protocol.

[0074] For example, Figure 5 As shown, the control system 10 outputs three groups of signals to be displayed 60, and the automobile display driver architecture 100 includes three first custom connectors 30. The initial protocol includes the LVDS protocol or the MIPI protocol; the first conversion chip 70 includes an LVDS to DP chip 71 or a MIPI to DP chip 72.

[0075] For example, Figure 5 As shown, the control system 10 includes a system-on-chip SOC and two first conversion chips 70, the system-on-chip SOC includes a group of first output ports 12 and two groups of second output ports 13, wherein the system-on-chip SOC outputs a group of signals to be displayed 60 through the first output port 12, the signal to be displayed 60 includes a sub-signal transmitted in the DP or eDP protocol, such as a video sub-signal DP, and the first output ports 12 have a plurality of first sub-output ports correspondingly connected to the plurality of first sub-transmission ports 31 of one of the first custom connectors 30, for example, the sub-output port of the first output port 12 that outputs a sub-signal transmitted in the DP or eDP protocol is connected to the DP in the first custom connector 30 by the DP interface, and the sub-output ports of the first output port 12 that output other sub-signals are respectively connected to the first sub-transmission ports 31 of the first custom connector 30 that transmit the corresponding sub-signals. A group of signals to be displayed 60 is transmitted through this first custom connector 30, wherein at least one sub-signal 61, such as the video sub-signal DP, in the signal to be displayed 60 is directly transmitted in the DP or eDP protocol.

[0076] For example, Figure 5As shown, the DP or eDP interfaces of the multiple first sub-transmission ports 31 of another first custom connector 30 are connected to the first conversion chip 70, such as the LVDS to DP chip 71, and the first conversion chip 70, such as the LVDS to DP chip 71, is connected to the sub-transmission port of one group of second output ports 13 of the system-level chip SOC that outputs the sub-signal transmitted in an initial protocol, such as the LVDS protocol; the system-level chip SOC outputs a group of initial signals to be displayed 60' through the second output port 13, and the initial signals to be displayed 60' include multiple initial sub-signals 61', an initial sub-signal 61', such as an initial video sub-signal The signal DP' is transmitted to the LVDS to DP chip 71 in the LVDS protocol. The LVDS to DP chip 71 converts the initial sub-signal 61' transmitted in the LVDS protocol, such as the initial video sub-signal DP', into a sub-signal 61 transmitted in the DP protocol, such as a video sub-signal DP, and outputs the control system 10. It can be understood that, except for the initial sub-signal 61' transmitted in the LVDS protocol, which needs to be converted by the LVDS to DP chip 71, the other initial sub-signals 61' output by the system-level chip SOC do not need to be converted, and these initial sub-signals 61' are directly regarded as sub-signals 61 and output to the control system 10. The sub-signal 61 transmitted in the DP protocol, such as the video sub-signal DP, is transmitted to the first first sub-transmission port 31-1 of the first custom connector 30, and is transmitted by the first second sub-transmission port 32-1 of the first custom connector 30 over a long distance through the transmission line 50, and is transmitted to the first first sub-transmission port 41-1 of the second custom connector 40, and is transmitted to the first vehicle-mounted display device 22 by the first second sub-transmission port 42-1 of the second custom connector 40.

[0077] It should be noted that the first first sub-transmission port 31-1 of the above-mentioned first custom connector 30 is a DP or eDP interface, and the first second sub-transmission port 32-1 of the first custom connector 30 is also a DP or eDP interface; the first first sub-transmission port 41-1 of the second custom connector 40 is also a DP or eDP interface, and the first second sub-transmission port 42-1 of the second custom connector 40 is also a DP or eDP interface; the first signal input interface 21-1 of the first vehicle display device 22 is also a DP or eDP interface.

[0078] For example, Figure 5As shown, the DP or eDP interfaces of the multiple first sub-transmission ports 31 of another first custom connector 30 are connected to the first conversion chip 70, such as the MIPI to DP chip 72, and the first conversion chip 70, such as the MIPI to DP chip 72, is connected to the sub-transmission port of another group of second output ports 13 of the system-level chip SOC that outputs the sub-signal transmitted in an initial protocol, such as the MIPI protocol; the system-level chip SOC outputs a group of initial signals to be displayed 60' through the second output port 13, and the initial signals to be displayed 60' include multiple initial sub-signals 61', an initial sub-signal 61', such as an initial video sub-signal The signal DP' is transmitted to the MIPI to DP chip 72 in the MIPI protocol. The MIPI to DP chip 72 converts the initial sub-signal 61' transmitted in the MIPI protocol, such as the initial video sub-signal DP', into a sub-signal 61 transmitted in the DP protocol, such as a video sub-signal DP, and outputs it to the control system 10. It can be understood that, except for the initial sub-signal 61' transmitted in the MIPI protocol, which needs to be converted by the MIPI to DP chip 72, the other initial sub-signals 61' output by the system-level chip SOC do not need to be converted, and these initial sub-signals 61' are directly regarded as sub-signals 61 and output to the control system 10. The sub-signal 61 transmitted in the DP protocol, such as the video sub-signal DP, is transmitted to the first first sub-transmission port 31-1 of the first custom connector 30, and is transmitted by the first second sub-transmission port 32-1 of the first custom connector 30 over a long distance through the transmission line 50, and is transmitted to the first first sub-transmission port 41-1 of the second custom connector 40, and is transmitted to the first vehicle-mounted display device 22 by the first second sub-transmission port 42-1 of the second custom connector 40.

[0079] It should be noted that the first first sub-transmission port 31-1 of the above-mentioned first custom connector 30 is a DP or eDP interface, and the first second sub-transmission port 32-1 of the first custom connector 30 is also a DP or eDP interface; the first first sub-transmission port 41-1 of the second custom connector 40 is also a DP or eDP interface, and the first second sub-transmission port 42-1 of the second custom connector 40 is also a DP or eDP interface; the first signal input interface 21-1 of the first vehicle display device 22 is also a DP or eDP interface.

[0080] In some embodiments, Figure 6As shown, at least one display system 20 includes a second vehicle-mounted display device 23 and a second conversion chip 80. The DP or eDP interfaces of multiple second sub-transmission ports 42 of the second custom connector 40 are connected to the second vehicle-mounted display device 23 through the second conversion chip 80; the second conversion chip 80 is configured to receive a sub-signal 61 transmitted in the DP or eDP protocol, and convert it into an initial sub-signal 61' transmitted in the initial protocol; wherein the second vehicle-mounted display device 23 is configured to drive the display in the initial protocol.

[0081] For example, Figure 6 As shown, the multiple signal input interfaces 21 of the second vehicle display device 23 include LVDS interfaces, for example, the first signal input interface 21-1 is an LVDS interface; the multiple second sub-transmission ports 42 of the second custom connector 40 include DP or eDP interfaces, for example, the first first sub-transmission port 41-1 is a DP or eDP interface. Since the DP or eDP interface of the second custom connector 40 cannot transmit signals to the second vehicle display device 23 with an LVDS interface, the DP or eDP protocol transmitted by the DP or eDP interface of the second custom connector 40 needs to be converted by the second conversion core 80, and the second conversion core 80 includes a DP to LVDS chip 81; for example, the DP or eDP protocol transmitted by the DP or eDP interface of the second custom connector 40 is converted into an LVDS protocol by the DP to LVDS chip 81, and then the LVDS protocol is transmitted to the LVDS interface of the second vehicle display device 23; or the multiple signal input interfaces 21 of the second vehicle display device 23 include MIPI interfaces, for example, the first signal input interface 21-1 is a MIPI interface; the multiple second sub-transmission ports 42 of the second custom connector 40 include DP or eDP interfaces, for example, the first first sub-transmission port 41-1 is a DP or eDP interface. The DP or eDP protocol transmitted by the DP or eDP interface of the second custom connector 40 is converted into the MIPI protocol through the DP to MIPI chip 82, and then the MIPI protocol is transmitted to the MIPI interface of the second vehicle-mounted display device 23; thereby driving the second vehicle-mounted display device 23 for display.

[0082] The second vehicle-mounted display device 23 can be directly driven by the sub-signal 61 transmitted in the LVDS protocol or the MIPI protocol to display the picture. It can be understood that the second vehicle-mounted display device 23 includes at least one LVDS interface or MIPI interface.

[0083] In some embodiments, the signal to be displayed 60 includes a video sub-signal DP, a DP control sub-signal aux, an interrupt sub-signal int, a control command sub-signal i2c, and a hot plug sub-signal hpd; Fig. 9As shown, the first custom connector 30 has a plurality of first sub-transmission ports 31 and a plurality of second sub-transmission ports 32, each including a DP or eDP interface, a pair of DP control sub-signal transmission ports AUXP / AUXN, a pair of control command sub-signal transmission ports I2C-SDA / I2C-SCL, a hot plug sub-signal transmission port HPD, and an interrupt sub-signal transmission port INT. The DP or eDP interface includes at least one pair of video sub-signal transmission ports TXP / TXN, at least one pair of video sub-signal transmission ports TXP / TXN for transmitting video sub-signals DP; a pair of DP control sub-signal transmission ports AUXP / AUXN for transmitting DP control sub-signals aux; a pair of control command sub-signal transmission ports I2C-SDA / I2C-SCL for transmitting control command sub-signals i2c; a hot plug sub-signal transmission port HPD for transmitting hot plug sub-signals hpd; and an interrupt sub-signal transmission port INT for transmitting interrupt sub-signals int. The video sub-signal transmission ports TXP / TXN may also be referred to as DP interfaces in some embodiments.

[0084] In some embodiments, the signal to be displayed 60 further includes a backlight on sub-signal bl-en and a backlight brightness adjustment sub-signal bl-pwm; Fig. 9 As shown, the multiple first sub-transmission ports 31 and the multiple second sub-transmission ports 32 of the first custom connector 30 also include a backlight-on sub-signal transmission port BL-EN and a backlight brightness adjustment sub-signal transmission port BL-PWM. The backlight-on sub-signal transmission port BL-EN is used to transmit the backlight-on sub-signal bl-en; the backlight brightness adjustment sub-signal transmission port BL-PWM is used to transmit the backlight brightness adjustment sub-signal bl-pwm.

[0085] For example, the DP protocol / eDP protocol are both free and open source high-definition digital display interface standards developed by VESA (Video Electronics Standards Association). Fig. 8A , Figure 8B As shown, the physical layer transmission channels are composed of a main link 202 , a power enable pin 201 , and a hot plug pin 203 . These necessary channels have been defined in the interface definitions of the first custom connector 30 and the second custom connector 40 .

[0086] In some embodiments, the DP or eDP interface of the first custom connector 30 includes four pairs of video sub-signal transmission ports TXP / TXN, namely TX0P / TX0N, TX1P / TX1N, TX2P / TX2N, and TX3P / TX3N. The video sub-signal transmission ports TXP / TXN are used to transmit differential signals of the video sub-signal DP.

[0087] Exemplarily, the system-on-chip SOC can output a signal to be displayed 60, and transmit the signal to be displayed 60 through a corresponding protocol, such as DP protocol, MIPI protocol, LVDS protocol, I2C protocol, etc.; the signal to be displayed 60 can be a picture, text, animated picture, video, audio, and a control signal of the display system 20, and the control signal of the display system 20 includes but is not limited to a universal asynchronous receiver and transmitter signal UART, an interrupt sub-signal int, a control command sub-signal i2c, a hot plug sub-signal hpd, a backlight on sub-signal bl-en, a backlight brightness adjustment sub-signal bl-pwm, an error feedback sub-signal ERR, etc. After canceling the encoder and deserializer, if the control signals of the display system 20 need to be directly transmitted, then these signals need to be defined for long-distance parallel transmission.

[0088] For example, I2C (Inter-Integrated Circuit) is a two-wire serial communication bus, mainly used to transmit some control commands; INT (INTERRUPT) is a signal sent by the terminal driver when the user types, and its corresponding operation is to normally close all processes, which is used for feedback of interrupt signals; ERR (Error) refers to the situation where an error occurs; BL_EN is used to turn on the backlight; BL_PWM is used to adjust the backlight brightness; UART (Universal Asynchronous Receiver / Transmitter) is a universal serial data bus used for asynchronous communication.

[0089] For example, to meet the maximum transmission requirement, Fig. 9 As shown, the multiple first sub-transmission ports 31 of the first custom connector 30 can be set to 16, and 16 corresponding connection lines 51 are set to transmit various signals. For example, the multiple first sub-transmission ports 31 of the first custom connector 30 can include: four pairs of video sub-signal transmission ports TXP / TXN, a pair of DP control sub-signal transmission ports AUXP / AUXN, a pair of control command sub-signal transmission ports I2C-SDA / I2C-SCL, a hot plug sub-signal transmission port HPD, an interrupt sub-signal transmission port INT, a backlight on sub-signal transmission port BL-EN, and a backlight brightness adjustment sub-signal transmission port BL-PWM. The multiple second sub-transmission ports 32 are set corresponding to the multiple first sub-transmission ports 31, that is, the multiple second sub-transmission ports 32 are also set to 16, and are connected to the 16 corresponding connection lines 51. The second custom connector 40 is the same as the first custom connector 30.

[0090] The 16 first sub-transmission ports 31 and the corresponding 16 connecting wires 51 of the first custom connector 30 can be deleted according to the requirements of transmitting multiple sub-signals 61. For example, the 16 first sub-transmission ports 31 and the corresponding 16 connecting wires 51 of the first custom connector 30 can be deleted according to the resolution and refresh rate of the transmitted video sub-signal DP.

[0091] In some embodiments, taking DP protocol 1.4 as an example, the transmission rate of a pair of video sub-signal transmission ports TXP / TXN, such as TX0P / TX0N, can be, for example, 8 Gbps, and the transmission rate of four pairs of video sub-signal transmission ports TXP / TXN, such as TX0P / TX0N, TX1P / TX1N, TX2P / TX2N, and TX3P / TX3N can be as high as, for example, 32 Gbps. In theory, a pair of video sub-signal transmission ports TXP / TXN can transmit a video with a resolution of 2K and a refresh rate of 60 Hz, and only one pair of video sub-signal transmission ports TXP / TXN is needed.

[0092] To ensure reliable signal, the interrupt sub-signal int needs a separate connection line 51 for transmission. The backlight on sub-signal bl-en and the backlight brightness adjustment sub-signal bl-pwm can be transparently transmitted through the control command sub-signal transmission port I2C-SDA / I2C-SCL, and are transmitted to the display system 20 through the connection line 51 by the control command sub-signal transmission port I2C-SDA / I2C-SCL. Therefore, if Fig.10 As shown, the first custom connector 30 can have at least eight first sub-transmission ports 31, namely, a pair of video sub-signal transmission ports TXP / TXN, a pair of DP control sub-signal transmission ports AUXP / AUXN, a pair of control command sub-signal transmission ports I2C-SDA / I2C-SCL, a hot plug sub-signal transmission port HPD, and an interrupt sub-signal transmission port INT. The second sub-transmission ports 32 are set corresponding to the first sub-transmission ports 31, namely, the second sub-transmission ports 32 are also set to eight and connected to eight corresponding connection lines 51. The second custom connector 40 is similar to the first custom connector 30.

[0093] For example, the first custom connector 30 requires at most 16 first sub-transmission ports 31 and corresponding 16 connecting wires 51. The number of the required first sub-transmission ports 31 and the corresponding connecting wires 51 can be customized according to actual needs. At the same time, in order to save costs, the mature interfaces and wires on the market can also be used, and these interfaces and wires can be customized to become the customized physical interface required by oneself. The mature interfaces on the market include the DP protocol universal interface and the type-c interface, and the mature wires on the market are coaxial cables.

[0094] The definition of the DP protocol general standard interface is as follows Fig.11As shown, it can be seen that the DP standard interface is 20 pins, which meets the requirement of the maximum interface 16 pins customized by the first customized connector 30. The definition of the Type-c universal standard interface is as follows Fig.12 As shown, it can be seen that the Type-c standard interface is 24 pins, which also meets the requirement of the first custom connector 30 for the maximum interface of 16 pins. Then, the above DP standard interface or Type-c standard interface can be customized according to the actual needs of the project to make it a custom physical interface required by oneself. The second custom connector 40 is the same as the first custom connector 30.

[0095] In some embodiments, the plurality of connecting lines 51 of the transmission line 50 are coaxial connecting lines.

[0096] On the other hand, the present application provides a signal transmission method of an automobile display driving architecture, which is applied to the automobile display driving architecture 100 described above. Fig.13 As shown, the signal transmission method of the automobile display driving architecture includes: S1, the control system 10 outputs at least one group of signals to be displayed 60, the signals to be displayed 60 include multiple sub-signals 61, and at least one of the multiple sub-signals 61 is transmitted using the DP or eDP protocol; S2, the multiple sub-signals 61 of the signals to be displayed 60 output by the control system 10 are transmitted in parallel to the display system 20 through the first custom connector 30, the transmission line 50, and the second custom connector 40; S3, the display system 20 receives the signals to be displayed 60, and displays it under the drive of the signals to be displayed 60.

[0097] Some embodiments of the present disclosure set a first custom connector 30 and a second custom connector 40, both of which are custom physical interfaces, and multiple sub-transmission ports in the connectors correspond to the transmission of multiple sub-signals 61, thereby realizing the control system 10 outputs multiple sub-signals 61, such as the video sub-signal DP that requires high-speed transmission and the control command sub-signal i2c and interrupt sub-signal int that do not require high-speed transmission, which can be directly transmitted in parallel over a long distance; each sub-signal 61 does not need to be serialized through the serialization chip 3-1 and then deserialized through the deserialization chip 3-2, thereby realizing the direct driving of the display system 20 by each sub-signal 61, shortening the transmission path of each sub-signal 61, and at the same time improving the transmission rate of each sub-signal 61.

[0098] On the other hand, the present application provides a transmission timing sequence 200 of a signal to be displayed, which is applied to the above-mentioned automobile display driving architecture 100. The signal to be displayed 60 received by the display system 20 includes a video sub-signal DP, an interrupt sub-signal int, and a control command sub-signal i2c. The display system 20 also receives a power-on signal LCD-VCC; Fig.15As shown, the working level of the power-on signal LCD-VCC is in the first time period t1, the working level of the interrupt sub-signal int is in the first time period t1; the working level of the video sub-signal DP is in the first time period t1; the working level of the control command sub-signal i2c is in the first time period t1.

[0099] In some embodiments, the signal to be displayed 60 further includes a backlight on sub-signal bl-en and a backlight brightness adjustment sub-signal bl-pwm; Fig.15 As shown, the working level of the backlight brightness adjustment sub-signal bl-pwm is in the second time period t2; the working level of the backlight enable sub-signal bl-en is in the second time period t2; wherein the second time period t2 is included in the first time period t1.

[0100] like Fig.14 As shown, it is a DP protocol or eDP protocol standard transmission timing diagram, including the transmission timing of the power-on signal LCD-VCC, the eDP protocol, the hot plug sub-signal hpd, etc., but it does not meet the transmission requirements of the car. In addition to the standard DP protocol / EDP protocol transmission timing, it is also necessary to add the transmission timing of the interrupt sub-signal int, the control command sub-signal i2c, the backlight brightness adjustment sub-signal bl-pwm, etc. The interrupt sub-signal int needs to maintain a high level after the power-on signal LCD-VCC is completed until the power is turned off. The backlight brightness adjustment sub-signal bl-pwm must maintain a stable waveform output during the backlight turn-on sub-signal bl-en, and the duty cycle of this waveform can be adjusted as needed. The control command sub-signal i2c (i2c-sda / i2c-scl) starts to output after the hot plug sub-signal hpd handshake signal is pulled high. During the output period, the screen configuration, register status and other operations can be read as needed, and it is turned off after power is turned off. Through the above timing, the DP / EDP protocol transmission that meets the requirements of the automotive display driver architecture 100 can be achieved.

[0101] As can be seen from the transmission timing 200 of the signal to be displayed, the customized data timing transmission is transmitted in parallel, without the need for serialization by a serializer, and has higher real-time performance and accuracy. Since the data is not serialized, the requirements for wires are lower, and the radiation emission and anti-interference requirements are lower.

[0102] The transmission timing 200 of the signal to be displayed provided in some embodiments can better implement the DP / EDP protocol transmission that meets the requirements of the automobile display driver architecture 100 and achieve better transmission effect.

[0103] In yet another aspect, the present application provides a vehicle, comprising the automotive display driving architecture 100 as described above.

[0104] Some embodiments of the present disclosure set a first custom connector 30 and a second custom connector 40, both of which are custom physical interfaces, and multiple sub-transmission ports in the connectors correspond to the transmission of multiple sub-signals 61, thereby realizing multiple sub-signals 61 output by the control system 10, such as video sub-signals DP that require high-speed transmission and control command sub-signals i2c and interrupt sub-signals int that do not require high-speed transmission, which can be directly transmitted in parallel over long distances; each sub-signal 61 does not need to be serialized by the serialization chip 3-1 and then deserialized by the deserialization chip 3-2, thereby realizing direct driving of the display system 20 by each sub-signal 61, shortening the transmission path of each sub-signal 61, and at the same time improving the transmission rate of each sub-signal 61; the serialization and deserialization chips and their related power supply chips in the traditional solution are omitted, simplifying the automotive display driver architecture 100 and greatly reducing the cost.

Claims

1. An automotive display driver architecture, characterized in that: include: A control system, the control system being configured to output at least one group of to-be-displayed signals, the to-be-displayed signals comprising a plurality of sub-signals, at least one of the plurality of sub-signals being transmitted in a DP or eDP protocol; At least one first custom connector, the first custom connector includes a plurality of first sub-transmission ports and a plurality of second sub-transmission ports respectively corresponding to the plurality of sub-signals in a group of the signals to be displayed, the plurality of first sub-transmission ports and the plurality of second sub-transmission ports each include at least one DP or eDP interface corresponding to at least one of the sub-signals transmitted using the DP or eDP protocol; the plurality of first sub-transmission ports of the at least one first custom connector are connected to the control system; At least one transmission line, the transmission line comprising a plurality of connection lines; the plurality of connection lines are respectively connected to the second sub-transmission ports adapted in the first custom connector; at least one second custom connector, the second custom connector comprising a plurality of first sub-transmission ports and a plurality of second sub-transmission ports respectively corresponding to the plurality of sub-signals in a group of the signals to be displayed, the plurality of first sub-transmission ports and the plurality of second sub-transmission ports each comprising at least one DP or eDP interface corresponding to at least one of the sub-signals transmitted using the DP or eDP protocol; the plurality of first sub-transmission ports of the second custom connector are respectively connected to the adapted connection lines; At least one display system, the display system is connected to the plurality of second sub-transmission ports of the second custom connector, and the display system is configured to receive the signal to be displayed and perform display under the control of the signal to be displayed.

2. The automotive display driver architecture according to claim 1, characterized in that: The multiple sub-signals of the signal to be displayed include a video sub-signal, and the video sub-signal is transmitted to the display system through the DP or eDP interface of the first custom connector and the DP or eDP interface of the second custom connector in accordance with the DP or eDP protocol.

3. The automotive display driver architecture according to claim 1, characterized in that: The control system includes a system-level chip, which is connected to the multiple first sub-transmission ports of the at least one first custom connector. The system-level chip is configured to output at least one group of signals to be displayed, and at least one sub-signal of the signals to be displayed is transmitted using the DP or eDP protocol.

4. The automotive display driver architecture according to claim 1, characterized in that: The control system includes a system-level chip and at least one first conversion chip, and the DP or eDP interfaces of the plurality of first sub-transmission ports of the first custom connector are connected to the system-level chip through the first conversion chip; The system-level chip is configured to output at least one group of initial signals to be displayed, wherein the initial signals to be displayed include multiple initial sub-signals, and at least one of the initial sub-signals is transmitted using an initial protocol; the first conversion chip is configured to receive the initial sub-signals transmitted using the initial protocol and convert them into the sub-signals transmitted using the DP protocol.

5. The automotive display driver architecture according to claim 1, characterized in that: The control system includes a system-level chip and at least one first conversion chip. When the control system is configured to output multiple groups of signals to be displayed, the system-level chip includes at least one group of first output ports and at least one group of second output ports. The DP or eDP interfaces of the multiple first sub-transmission ports of at least one of the first custom connectors are respectively connected to the at least one group of second output ports of the system-level chip through the first conversion chip; and at least one of the first custom connectors is correspondingly connected to the at least one group of first output ports of the system-level chip. The system-level chip is configured to output a group of initial signals to be displayed through a group of the second output ports, and to output a group of signals to be displayed through a group of the first output ports; the initial signals to be displayed include multiple initial sub-signals, at least one of which is transmitted using an initial protocol; the first conversion chip is configured to receive the initial sub-signals transmitted using the initial protocol, and convert them into the sub-signals transmitted using the DP protocol.

6. The automotive display driver architecture according to any one of claims 1 to 5, characterized in that: The display system includes a first vehicle-mounted display device, which is connected to the second custom connector, wherein the first vehicle-mounted display device is configured to drive the display using the DP or eDP protocol.

7. The automotive display driver architecture according to any one of claims 1 to 5, characterized in that: At least one of the display systems includes a second vehicle-mounted display device and a second conversion chip, and the DP or eDP interfaces of the plurality of second sub-transmission ports of the second custom connector are connected to the second vehicle-mounted display device through the second conversion chip; The second conversion chip is configured to receive the sub-signal transmitted in the DP or eDP protocol, and convert it into an initial sub-signal transmitted in the initial protocol; Wherein, the second vehicle-mounted display device is configured to drive the display using the initial protocol.

8. The automotive display driver architecture according to claim 1, characterized in that: The signal to be displayed includes a video sub-signal, a DP control sub-signal, an interrupt sub-signal, a control command sub-signal, and a hot plug sub-signal; The plurality of first sub-transmission ports and the plurality of second sub-transmission ports of the first custom connector both include: The DP or eDP interface includes at least one pair of video sub-signal transmission ports for transmitting the video sub-signal; A pair of DP control sub-signal transmission ports, used for transmitting the DP control sub-signal; A pair of control command sub-signal transmission ports, used for transmitting the control command sub-signals; A hot-plug sub-signal transmission port, used for transmitting the hot-plug sub-signal; The interrupt sub-signal transmission port is used to transmit the interrupt sub-signal.

9. The automotive display driver architecture according to claim 8, characterized in that: The signal to be displayed also includes a backlight on sub-signal and a backlight brightness adjustment sub-signal; The plurality of first sub-transmission ports and the plurality of second sub-transmission ports of the first custom connector further include: A backlight on sub-signal transmission port, used for transmitting the backlight on sub-signal; The backlight brightness adjustment sub-signal transmission port is used to transmit the backlight brightness adjustment sub-signal.

10. The automotive display driver architecture according to claim 8 or 9, characterized in that: The DP or eDP interface includes four pairs of video sub-signal transmission ports.

11. The automotive display driver architecture according to claim 1, characterized in that: The plurality of connecting lines of the transmission line are coaxial connecting lines.

12. A signal transmission method of an automobile display driving architecture, applied to the automobile display driving architecture as claimed in any one of claims 1 to 11, characterized in that: include: The control system outputs at least one group of signals to be displayed, wherein the signals to be displayed include a plurality of sub-signals, and at least one of the sub-signals is transmitted using the DP or eDP protocol; The multiple sub-signals of the signal to be displayed output by the control system are transmitted in parallel to the display system through the first custom connector, the transmission line, and the second custom connector; The display system receives the signal to be displayed and performs display under the drive of the signal to be displayed.

13. A transmission timing of a signal to be displayed, applied to the automobile display driving architecture according to any one of claims 1 to 11, characterized in that: The to-be-displayed signal received by the display system includes a video sub-signal, an interrupt sub-signal, and a control command sub-signal, and the display system also receives a power-on signal; The working level of the power-on signal is in the first time period, the working level of the interrupt sub-signal is in the first time period; the working level of the video sub-signal is in the first time period; and the working level of the control command sub-signal is in the first time period.

14. The transmission timing of the signal to be displayed according to claim 13, characterized in that: The signal to be displayed also includes a backlight on sub-signal and a backlight brightness adjustment sub-signal; The period in which the working level of the backlight brightness adjustment sub-signal is located is the second period; the working level of the backlight turn-on sub-signal is in the second period; The second time period is included in the first time period.

15. A vehicle, characterized in that: It comprises the automobile display driving architecture as described in any one of claims 1 to 11.

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