CN113190205A - Vehicle-mounted display screen interface circuit system, display method and vehicle-mounted multimedia equipment - Google Patents
Vehicle-mounted display screen interface circuit system, display method and vehicle-mounted multimedia equipment Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
- G06F3/04842—Selection of displayed objects or displayed text elements
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/147—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0016—Inter-integrated circuit (I2C)
Abstract
The invention provides a vehicle-mounted display screen interface circuit system, a display method and vehicle-mounted multimedia equipment, wherein the system comprises a main control unit, an MIPI controller and an I2C controller, the I2C controller is connected with a first touch socket and a second touch socket, the system also comprises an MIPI converter and a selection control signal line MIPI converter, the input end of the MIPI converter is connected with the MIPI controller, the output end of the MIPI converter is connected with the first display socket and the second display socket, the display signal output by the MIPI controller is received and divided into a first display signal and a second display signal, the input end of the MIPI converter is also connected with the main control unit, the selection control signal is received, and the first display socket is selected according to the selection control signal to output the first display signal or the second display socket is selected to output the second display signal. According to the invention, the display screen interface and the touch interface are integrated on the same hardware circuit board, so that the display screen interface and the touch interface can be adapted to display screens of different manufacturers, the hardware development and maintenance cost is reduced, and the user experience is improved.
Description
Technical Field
The invention relates to the technical field of vehicle-mounted multimedia, in particular to a vehicle-mounted display screen interface circuit system, a display method and vehicle-mounted multimedia equipment.
Background
With the continuous development of automobile manufacturing technology, people have higher and higher requirements on the functionality of automobiles, and vehicle-mounted multimedia equipment is also striving to meet the requirements of people.
In the prior art, a touch display screen of a vehicle-mounted multimedia device is generally integrated and attached together, a touch interface generally adopts an I2C interface (6 Pin FPC flat cable), and a display screen interface generally adopts an MIPI interface (30 Pin FPC flat cable), although most of flat cable positions of display screens of different manufacturers on the market are in the middle of the screen, some flat cables can be in the lower left corner or the lower right corner of the screen, and the flat cables are generally short and cannot be bent. For hardware designers, two sets of main boards are usually required to be designed, so that the display screen socket and the touch socket are located at different positions of the main boards to be adapted to display screens of different manufacturers, and the hardware development and maintenance cost is increased; in addition, if two interface circuits are integrated on one circuit mainboard for realization, since the MIPI display signal is a high-speed signal, the signal integrity is affected by directly branching the MIPI display signal, and the phenomenon of screen splash of the display screen can be caused.
Disclosure of Invention
The invention provides a vehicle-mounted display screen interface circuit system, a display method and vehicle-mounted multimedia equipment, which are used for solving the technical problem that screen splash occurs when two different interface circuits are integrated on one circuit mainboard in the prior art, and the aims of saving cost and facilitating hardware management and later maintenance are fulfilled.
In a first aspect, the present invention provides a vehicle-mounted display interface circuit system, including a main control unit, an MIPI controller, and an I2C controller, where the I2C controller is connected to a first touch socket and a second touch socket, and further including: the selection control signal line is connected with the main control unit and the MIPI converter and used for transmitting a selection control signal; the input end of the MIPI converter is connected with the MIPI controller, the output end of the MIPI converter is connected with the first display socket and the second display socket, wherein,
the input end of the MIPI converter is used for receiving a display signal output by the MIPI controller and dividing the display signal into a first display signal and a second display signal; the input end of the MIPI converter is further connected with the main control unit through the selection control signal line and used for receiving a selection control signal, and the first display socket is selected to output the first display signal or the second display socket is selected to output the second display signal according to the selection control signal.
In a second aspect, the present invention further provides a display method for a vehicle-mounted display screen, including:
monitoring a display screen insertion detection signal in real time;
when the display screen insertion detection signal is monitored to be a first state signal, the main control unit outputs a first output state signal of a selection control signal to the MIPI converter;
the MIPI converter selects a first display socket according to the selection control signal to output a first display signal to a first display screen.
In a third aspect, the present invention further provides a vehicle-mounted multimedia device, including any one of the above vehicle-mounted display screen interface circuit systems.
The invention provides a vehicle-mounted display screen interface circuit system, a display method and vehicle-mounted multimedia equipment, wherein the system comprises a main control unit, the main control unit comprises an MIPI controller and an I2C controller, the I2C controller is connected with a first touch socket and a second touch socket, the system also comprises a selection control signal line and an MIPI converter, the selection control signal line is used for transmitting a selection control signal, the input end of the MIPI converter is connected with the MIPI controller, the output end of the MIPI converter is connected with the first display socket and the second display socket, the input end of the MIPI converter is used for receiving a display signal output by the MIPI controller, and the display signal is divided into a first display signal and a second display signal; the input end of the MIPI converter is also connected with the main control unit and used for receiving the selection control signal and selecting the first display socket to output the first display signal or selecting the second display socket to output the second display signal according to the selection control signal. The system provided by the invention can automatically identify the application scene of the equipment and control the output channel of the display signal, realizes the purpose that one hardware circuit board is simultaneously adapted to various touch display screen interfaces, effectively reduces the hardware cost, and is convenient for hardware management and maintenance.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an interface circuit system of a vehicle-mounted display screen according to the present invention;
FIG. 2 is a schematic diagram of a general structure of an interface circuit system of a vehicle-mounted display screen according to the present invention;
FIG. 3 is a schematic flow chart of a display method of a vehicle-mounted display screen according to the present invention;
fig. 4 is a general flowchart of a display method of a vehicle-mounted display screen according to the present invention.
Description of reference numerals:
1-a main control unit; 2-MIPI controller;
3-I2C controller; a 4-MIPI converter;
5-a first touch controller; 6-a first display socket;
7-a second display socket; 8-a second touch socket;
9-a first display screen; 10-a second display screen;
11-display signal; 12-a first display signal;
13-a second display signal; 14-display screen insertion detection signal;
15-select control signal; the 16-I2C signal;
17-the display screen inserts the detection signal line; 18-select control signal line.
Detailed Description
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
In the description of the present invention, it should be noted that the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Fig. 1 is a schematic structural diagram of an interface circuit system of a vehicle-mounted display screen according to the present invention. As shown in fig. 1, the vehicle-mounted display interface circuit system provided by the present invention includes a main control unit 1, an MIPI controller 2, and an I2C controller 3, where the I2C controller 3 is connected to a first touch socket 5 and a second touch socket 8, and further includes: a selection control signal line 18 and a MIPI converter 4, wherein the selection control signal line 18 is connected with the main control unit 1 and the MIPI converter 4, and is used for transmitting a selection control signal 15; the MIPI converter 4 has an input terminal connected to the MIPI controller 2 and an output terminal connected to a first display socket 6 and a second display socket 7, wherein,
the input end of the MIPI converter 4 is configured to receive a display signal 11 output by the MIPI controller 2, and divide the display signal 11 into a first display signal 12 and a second display signal 13; the input end of the MIPI converter 4 is further connected to the main control unit 1 through the selection control signal line 18, and is configured to receive the selection control signal 15, and select the first display socket 6 to output the first display signal 12 or select the second display socket 7 to output the second display signal 13 according to the selection control signal 15.
Specifically, the converter is configured to determine through which display channel the display signal is output according to the control signal. In the practical application process, the MIPI display signal is output to a specific display socket according to a selection control signal sent by the main control unit, so that the inserted display screen displays.
The first touch socket 5 may be a lower left touch socket, the first display socket 6 is a lower left display socket, the first display signal 12 is a lower left display signal, the second touch socket 8 is a lower right touch socket, the second display socket 7 is a lower right display socket, and the second display signal 13 is a lower right display signal; or the first touch socket 5 is a lower right touch socket, the first display socket 6 is a lower right display socket, the first display signal 12 is a lower right display signal, the second touch socket 8 is a lower left touch socket, the second display socket 7 is a lower left display socket, and the second display signal 13 is a lower left display signal. The specific configuration may be set according to actual needs, and is not particularly limited herein.
The selection control signal line 18 is connected to the main control unit 1 and the MIPI converter 4, and the MIPI converter determines an output channel of the display signal according to the selection control signal 15 transmitted by the selection control signal line 18. In the embodiment of the present invention, the selection control signal line 18 is a SEL signal line, and is used for controlling the MIPI converter to select and switch the output path of the MIPI display signal.
In the embodiment of the present invention, an input end of the MIPI converter 4 is connected to the MIPI controller 2, and is configured to receive a display signal output by the MIPI controller 2, divide the display signal 11 into a first display signal 12 and a second display signal 13, and an output end is connected to the first display socket 6 and the second display socket 7; meanwhile, the input end of the MIPI converter 4 is also connected to the main control unit 1, and is configured to receive the selection control signal 15, and select the first display socket 6 to output the first display signal 12 or select the second display socket 7 to output the second display signal 13 according to the selection control signal 15. In the embodiment of the present invention, the preferred first touch socket 5 and the second touch socket 8 are 6Pin touch sockets, and the first display socket 6 and the second display socket are 30Pin display sockets, which may be specifically selected according to actual needs, and are not specifically limited herein.
The MIPI converter, i.e., the MIPI Switch, specifically outputs the display signal 11 through the first display socket 6 or the second display socket 7 according to the selection control signal SEL, and may be implemented by using a dedicated analog Switch chip, typically, TS5MP465 of TI corporation; the display signals 11 in this embodiment include a clock CLK signal and four sets of Lane Data signals Data [1:4 ].
For example, when the main control unit 1 detects that a display screen is inserted into the lower left display socket, the main control unit 1 outputs a selection control signal 15 to the MIPI converter 4 through the selection control signal line 18, and the MIPI converter 4 outputs the first display signal 12 to the first display screen 9 through the lower left display socket according to the selection control signal 15, so that the first display screen 9 displays the display screen.
In the embodiment of the invention, the MIPI display signal is divided into the first display signal and the second display signal through the MIPI converter, the corresponding display screens are respectively controlled, the phenomenon of screen splash is avoided, the purpose of automatically selecting different display signal output channels by the MIPI converter can be realized by adding a selection control signal line, meanwhile, the display screen interface and the touch interface are integrated on one hardware circuit, the MIPI converter can be adapted to the display screens of different manufacturers, the MIPI display signal can be applied to different application scenes, the hardware development and maintenance cost is reduced, and the user experience is improved.
In another embodiment of the present invention, as shown in fig. 2, the system further comprises a display screen insertion detection signal line 17, wherein,
the input end of the display screen insertion detection signal line 17 is connected with the first display socket 6, and the output end of the display screen insertion detection signal line is connected with the main control unit 1 and used for transmitting a display screen insertion detection signal 14.
Specifically, the display screen insertion detection signal line 17 is used for detecting whether the first display socket 6 has a display screen inserted, and transmitting the display screen insertion detection signal 14, and if the display screen is inserted, outputs a level signal to the main control unit 1, and if the display screen is not inserted, outputs another level signal to the main control unit 1.
In the embodiment of the present invention, the display screen insertion detection signal line 17 is an MIPI _ DET signal line, and is used to detect whether the display screen is inserted into the first display socket 6. When the first display socket 6 is inserted with the MIPI display screen, the MIPI _ DET signal line inputs a low-level signal to the main control unit 1; when the first display socket 6 is empty, it indicates that the first display socket is not inserted with a display screen, and the MIPI _ DET signal line inputs a high-level signal to the main control unit 1; one end of the MIPI _ DET signal line can be connected to a GPIO pin of a pull-up resistor in the main control unit 1, the other end of the MIPI _ DET signal line is connected to an idle ground pin of the first display socket 6, the pull-up resistor in the main control unit 1 puts the ground pin high when no display screen is connected, and the ground signal of the display screen puts the ground pin low when the display screen is connected.
In the embodiment of the invention, the display screen is additionally provided with the insertion detection signal line, wherein the input end of the display screen insertion detection signal line is connected with the first display socket, and the output end of the display screen insertion detection signal line is connected with the main control unit. The system provided by the invention can detect whether the display screen is inserted into the display screen socket or not, and realizes the purpose of automatically identifying the external display screen and selecting different display signal output channels by the MIPI converter.
In another embodiment of the invention, the output terminals of the first display socket 6 and the first touch socket 5 are connected to a first display screen 9.
Specifically, the first display socket may be a lower left display socket, the first touch socket is a lower left touch socket, and the first display screen is a lower left display screen, which may be specifically set according to actual design requirements, and is not specifically limited herein.
In the embodiment of the invention, the output ends of the first display socket and the first touch socket are connected with the first display screen and are used for displaying and touching the first display screen.
In another embodiment of the present invention, the output terminals of the second display socket 7 and the second touch socket 8 are connected to a second display screen 10.
Specifically, the second display socket may be a right-lower display socket, the second touch socket is a right-lower touch socket, and the second display screen is a right-lower display screen, which may be specifically set according to actual design requirements, and is not specifically limited herein.
In the embodiment of the invention, the output ends of the second display socket and the second touch socket are connected with the second display screen and are used for displaying and touching the second display screen.
In another embodiment of the invention, the display signal 11 comprises a clock signal and a data signal.
Specifically, the display signal is an MIPI display signal, which is a digital signal with a relatively high propagation rate and includes a clock signal CLK and four sets of Lane Data signals Data [1:4 ].
In the embodiment of the invention, the display signal is used for controlling the display of the display screen, wherein the Clock signal (Clock) is a semaphore with a fixed period and is irrelevant to the operation.
In another embodiment of the present invention, the I2C controller 3 outputs an I2C signal 16 to the first touch socket 5 or the second touch socket 8.
Specifically, I2C (Inter-Integrated Circuit) is a name of an internal Integrated Circuit, and is a serial communication bus including a serial data line SDA and a serial clock line SCL, and I2C is a signal generated when I2C is used for communication.
The first touch socket 5 may be a left lower touch socket, and the second touch socket 8 may be a right lower touch socket, which may be specifically set according to actual design requirements, and is not specifically limited herein.
In the embodiment of the invention, the I2C controller outputs an I2C signal to the first touch socket and the second touch socket, and touch control over a first display screen accessed to the first touch socket or touch control over a second display screen accessed to the second touch socket is realized through an I2C signal.
Fig. 3 is a schematic flow chart of a display method of an interface circuit of a vehicle-mounted display screen provided by the present invention, and as shown in fig. 3, the display method of the interface circuit of the vehicle-mounted display screen provided by the present invention includes the following steps:
step 301: monitoring a display screen insertion detection signal in real time;
step 302: when the display screen insertion detection signal is monitored to be a first state signal, the main control unit outputs a first output state signal of a selection control signal to the MIPI converter;
step 303: the MIPI converter selects a first display socket according to the selection control signal to output a first display signal to a first display screen.
Specifically, the display screen insertion detection signal refers to a status signal that is sent when the display screen is inserted into the display socket.
In the embodiment of the invention, the display screen insertion detection signal is an MIPI _ DET signal, the first state signal may be a low level signal, and if the MIPI _ DET signal is detected to be low level, it indicates that the display screen is inserted into the lower left display socket, the main control unit adjusts the selection control signal to be a high level signal and outputs the high level signal to the MIPI converter, and the MIPI converter selects the lower left display socket according to the high level signal and outputs the display signal to the inserted display screen, so that the display screen performs display. It should be noted that the first output status signal is a high level signal, the first display socket is a lower left display socket, and the first display screen is a lower left display screen, which may be specifically set according to actual design requirements, and is not specifically limited herein.
In the embodiment of the invention, the display screen insertion detection signal is monitored in real time, and when the signal is in the first state signal, the main control unit adjusts the selection control signal into the first output state signal and outputs the first output state signal to the MIPI converter, so that the selection of the display signal output channel is realized. The method provided by the invention can automatically recognize the insertion of the external display screen and automatically select the output channel for controlling the display signal, thereby achieving the purpose that one hardware circuit board is simultaneously adapted to various touch display screen interfaces, reducing the hardware cost, facilitating the hardware management and maintenance and improving the user experience.
In another embodiment of the present invention, as shown in fig. 4, the method further comprises:
when the display screen insertion detection signal is monitored to be a second state signal, the main control unit outputs a second output state signal of the selection control signal to the MIPI converter;
and the MIPI converter selects a second display socket according to the selection control signal to output a second display signal to a second display screen.
Specifically, the second state signal may be a high level signal, and the second output state signal is a low level signal, or the second state signal may be a low level signal, and the second output state signal is a high level signal, which may be specifically set according to actual design requirements, and is not specifically limited herein.
In the embodiment of the invention, the display screen insertion detection signal is an MIPI _ DET signal, if the MIPI _ DET signal is detected to be a high-level signal, it indicates that the display screen is inserted into the display socket at the lower right side, the main control unit adjusts the selection control signal to be a low-level signal and outputs the low-level signal to the MIPI converter, and the MIPI converter selects the display socket at the lower right side according to the low-level signal and outputs the display signal to the display screen at the lower right side, so that the display screen displays the display signal.
In the embodiment of the invention, when the display screen insertion detection signal is monitored to be the second state signal, the main control unit adjusts the selection control signal to be the second output state signal and outputs the second output state signal to the MIPI converter, so that the selection of the display signal output channel is realized. The method provided by the invention can automatically recognize the insertion of the external display screen and automatically select the output channel for controlling the display signal, thereby achieving the purpose that one hardware circuit board is simultaneously adapted to various touch display screen interfaces, reducing the hardware cost, facilitating the hardware management and the later maintenance and improving the user experience.
In another embodiment of the present invention, the method further comprises:
an output of the I2C controller outputs an I2C signal to a first touch socket for controlling touching of the first display screen or outputs the I2C signal to a second touch socket for controlling touching of the second display screen.
Specifically, the first touch socket may be a lower left touch socket, the first display screen is a lower left display screen, the second touch socket is a lower right touch socket, and the second display screen is a lower right display screen. The specific configuration may be set according to actual design requirements, and is not specifically limited herein.
In the embodiment of the invention, the output end of the I2C controller outputs an I2C signal to the touch socket at the lower left to control the touch of the display screen at the lower left, or the output end of the I2C controller outputs an I2C signal to the touch socket at the lower right to control the touch of the display screen at the lower right.
In another embodiment of the present invention, the present invention further provides a vehicle-mounted multimedia device, including any one of the above vehicle-mounted display screen interface circuit systems.
The vehicle-mounted multimedia equipment preferably comprises the vehicle-mounted display screen interface circuit system, so that the aim of simultaneously adapting to various touch display screen interfaces by one hardware circuit board can be fulfilled, the hardware cost is reduced, and hardware management and later maintenance are facilitated.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a vehicle-mounted display screen interface circuit system, includes main control unit, MIPI controller and I2C controller, I2C controller links to each other with first touch socket and second touch socket, its characterized in that still includes: the selection control signal line is connected with the main control unit and the MIPI converter and used for transmitting a selection control signal; the input end of the MIPI converter is connected with the MIPI controller, the output end of the MIPI converter is connected with the first display socket and the second display socket, wherein,
the input end of the MIPI converter is used for receiving a display signal output by the MIPI controller and dividing the display signal into a first display signal and a second display signal; the input end of the MIPI converter is further connected with the main control unit through the selection control signal line and used for receiving a selection control signal, and the first display socket is selected to output the first display signal or the second display socket is selected to output the second display signal according to the selection control signal.
2. The vehicle-mounted display screen interface circuit system according to claim 1, further comprising a display screen insertion detection signal line, wherein,
the input end of the display screen insertion detection signal line is connected with the first display socket, and the output end of the display screen insertion detection signal line is connected with the main control unit and used for transmitting a display screen insertion detection signal.
3. The vehicle-mounted display screen interface circuit system according to claim 1 or 2, wherein the output ends of the first display socket and the first touch socket are connected to a first display screen.
4. The vehicle-mounted display screen interface circuit system according to claim 1 or 2, wherein the output ends of the second display socket and the second touch socket are connected to a second display screen.
5. The vehicle display interface circuitry of claim 1, wherein the display signals comprise clock signals and data signals.
6. The vehicle display interface circuitry of claim 1, wherein the I2C controller outputs an I2C signal to the first touch socket or the second touch socket.
7. A vehicle display screen display method implemented based on the vehicle display screen interface circuit system of any one of claims 1 to 6, comprising:
monitoring a display screen insertion detection signal in real time;
when the display screen insertion detection signal is monitored to be a first state signal, the main control unit outputs a first output state signal of a selection control signal to the MIPI converter;
the MIPI converter selects a first display socket according to the selection control signal to output a first display signal to a first display screen.
8. The on-vehicle display screen display method according to claim 7, characterized by further comprising:
when the display screen insertion detection signal is monitored to be a second state signal, the main control unit outputs a second output state signal of the selection control signal to the MIPI converter;
and the MIPI converter selects a second display socket according to the selection control signal to output a second display signal to a second display screen.
9. The on-vehicle display screen display method according to claim 7, characterized by further comprising:
an output of the I2C controller outputs an I2C signal to a first touch socket for controlling touching of the first display screen or outputs the I2C signal to a second touch socket for controlling touching of the second display screen.
10. Vehicle multimedia device, characterized in that it comprises the vehicle display interface circuit system according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110743504.2A CN113190205A (en) | 2021-07-01 | 2021-07-01 | Vehicle-mounted display screen interface circuit system, display method and vehicle-mounted multimedia equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113682234A (en) * | 2021-08-23 | 2021-11-23 | 南京领行科技股份有限公司 | Vehicle host |
| CN114791780A (en) * | 2022-06-21 | 2022-07-26 | 武汉海微科技有限公司 | Display screen touch control method, device, equipment and storage medium |
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| US20120041706A1 (en) * | 2010-08-16 | 2012-02-16 | Fih (Hong Kong) Limited | Testing system for portable electronic device |
| CN112349238A (en) * | 2021-01-06 | 2021-02-09 | 智道网联科技(北京)有限公司 | Vehicle-mounted device, display driving method, and control circuit |
| CN112506831A (en) * | 2020-12-03 | 2021-03-16 | 宁波弗浪科技有限公司 | Processing method of vehicle-mounted touch screen converter |
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| US20120041706A1 (en) * | 2010-08-16 | 2012-02-16 | Fih (Hong Kong) Limited | Testing system for portable electronic device |
| CN112506831A (en) * | 2020-12-03 | 2021-03-16 | 宁波弗浪科技有限公司 | Processing method of vehicle-mounted touch screen converter |
| CN112349238A (en) * | 2021-01-06 | 2021-02-09 | 智道网联科技(北京)有限公司 | Vehicle-mounted device, display driving method, and control circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113682234A (en) * | 2021-08-23 | 2021-11-23 | 南京领行科技股份有限公司 | Vehicle host |
| CN114791780A (en) * | 2022-06-21 | 2022-07-26 | 武汉海微科技有限公司 | Display screen touch control method, device, equipment and storage medium |
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Application publication date: 20210730 |