CN113400937B - Vehicle entertainment information display system and vehicle - Google Patents
Vehicle entertainment information display system and vehicle Download PDFInfo
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- CN113400937B CN113400937B CN202110407169.9A CN202110407169A CN113400937B CN 113400937 B CN113400937 B CN 113400937B CN 202110407169 A CN202110407169 A CN 202110407169A CN 113400937 B CN113400937 B CN 113400937B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Arrangement of adaptations of instruments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
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- B60K2360/164—
Abstract
The invention provides a vehicle entertainment information display system and a vehicle, and relates to the technical field of vehicles. The vehicle entertainment information display system of the present invention may include a driving information display system and an entertainment information host, the driving information display system including: the display screen is used for displaying driving information; the display driving chip is used for controlling the display screen to display the driving information and generating and outputting a display abnormal interrupt signal; the deserializer is used for receiving an abnormal interrupt signal generated by the display driving chip; the entertainment information host comprises: the serializer is used for receiving a display abnormal interrupt signal transmitted by the deserializer; and the diagnosis control unit is used for receiving the display abnormal interrupt signal transmitted by the serializer and reading the display state information of the display driving chip according to the display abnormal interrupt signal, so that the diagnosis control unit controls the serializer, the deserializer, the display screen and/or the display driving chip according to the display state information to meet the functional safety requirement.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a vehicle entertainment information display system and a vehicle.
Background
In many vehicle models on the market at present, a vehicle infotainment system transmits video information to a driving information module, and after the driving information module processes the video information, video pictures (navigation, music, radio and the like) are displayed in a specific area of a driving information display screen. The fixed region around the driving information display screen can display various alarm lamps, and the alarm lamps have the requirement of functional safety. Therefore, the whole link from the driving information module to the driving information display screen has the requirement of functional safety. In the prior art, in order to enable the two modules to meet the requirement of functional safety, a functional safety device needs to be additionally added, so that a lot of additional cost needs to be added.
Disclosure of Invention
It is an object of a first aspect of the present invention to provide a vehicle entertainment information display system that solves the problem of the prior art that vehicle entertainment information display systems do not meet functional safety requirements.
A second aspect of the present invention is directed to solving the problems of the prior art of vehicle entertainment information display systems that are complex in construction, costly, and slow to respond.
It is an object of a second aspect of the invention to provide a vehicle incorporating the vehicle entertainment information display system.
In particular, the invention provides a vehicle entertainment information display system, which comprises a driving information display system and an entertainment information host,
the driving information display system includes:
the display screen is used for displaying driving information;
the display driving chip is used for controlling the display screen to display the driving information and generating and outputting a display abnormal interrupt signal; and
the deserializer is connected with the display driving chip and used for receiving the abnormal interrupt signal generated by the display driving chip;
the entertainment information host comprises:
the serializer is connected with the deserializer through a serial video line and used for receiving the display abnormal interrupt signal transmitted by the deserializer;
and the diagnosis control unit is connected with the serializer and is used for receiving the display abnormal interrupt signal transmitted by the serializer and reading the display state information of the display driving chip according to the display abnormal interrupt signal, so that the diagnosis control unit controls the serializer, the deserializer, the display screen and/or the display driving chip according to the display state information.
Optionally, the display driving chip is further configured to generate a pulse modulation signal, and transmit the pulse modulation signal to the diagnostic control unit through the serializer and the deserializer, and the diagnostic control unit is further configured to generate a control signal for controlling the serializer, the deserializer, the display screen, and/or the display driving chip according to the pulse modulation signal.
Optionally, the diagnostic control unit is configured to:
analyzing the period of the pulse modulation signal;
when the period of the pulse modulation signal is abnormal, generating a control signal for controlling the initialization of the deserializer and the serializer;
after the deserializer and the serializer are controlled to be initialized, when the period of the pulse modulation signal is analyzed to be still abnormal, a control signal for controlling the display driving chip to reset is generated;
and after the display driving chip is controlled to be reset, when the period of the pulse modulation signal is analyzed to be still abnormal, generating a control signal for controlling the display driving chip to send out a control signal for controlling the display screen to be restarted.
Optionally, the diagnostic control unit is further configured to receive and process an enable control signal of the vehicle bus, and generate an on-screen switch enable signal according to the enable control signal;
the driving information display system also comprises a plurality of power supplies which are respectively connected with the deserializer and the display driving chip so as to respectively provide electric energy for the deserializer and the display driving chip;
the diagnosis control unit is connected with the display driving chip through a hard wire, and the screen switch enabling signal is transmitted to the power supply through the hard wire so as to turn on or turn off the display screen.
Optionally, the deserializer is connected with the diagnostic control unit through an abnormal output line; the deserializer is also used for generating an abnormal detection signal for monitoring whether the deserializer is abnormal or not and transmitting the abnormal detection signal to the diagnosis control unit through the abnormal output line;
the diagnosis control unit is further used for judging that all signals sent to the diagnosis control unit by the deserializer through the serializer are invalid when the deserializer is abnormal according to the received abnormal monitoring signals.
Optionally, the entertainment information host further comprises a main control unit, the main control unit comprises a virtualization platform and at least two operating systems, the diagnosis control unit is connected with the diagnostic control unit through an SPI, the main control unit is further connected with the serializer, and the main control unit is used for receiving display control signals acquired and processed by the diagnostic control unit from the vehicle bus, generating corresponding display picture signals according to the display control signals, and transmitting the display picture signals to the display driving chip through the serializer and the deserializer.
Optionally, the main control unit is further configured to generate a verification signal while obtaining the display picture signal, and transmit the verification signal to the diagnosis control unit for verification; the main control unit is further configured to transmit the display picture signal to the display driving chip when receiving a verification feedback signal sent by the diagnosis control unit and used for verifying the verification signal and when the verification feedback signal shows that the verification is passed.
Optionally, the power supply sends a power supply abnormal interruption signal for monitoring whether the power supply is interrupted;
the diagnosis control unit receives the power supply abnormal interruption signal and reads a power supply state signal of the power supply according to the power supply abnormal interruption signal;
the diagnostic control unit is configured to:
determining the abnormal grade of the driving information display system according to the display state information, the power state information, the pulse modulation signal and the check feedback signal;
and generating control signals for controlling the serializer, the deserializer, the display screen and/or the display driving chip according to the abnormal grade.
Optionally, the diagnostic control unit is configured to:
when the display screen or the signal of the display driving chip is judged to be unstable or the deserializer is automatically closed according to the received abnormal interrupt signal, a control signal for controlling the display screen to be closed is sent out;
when the pulse modulation signal is abnormal, the display state information indicates that the display screen or the display driving chip is abnormal, the power state information indicates that the power supply is abnormal or the verification feedback signal indicates that verification fails, a control signal for controlling the initialization of the display driving chip, the serializer or the deserializer is sent out;
when the pulse modulation signal is still abnormal, the state information still has an abnormal signal or the verification feedback signal shows that the verification still fails after the display driving chip, the serializer or the deserializer are initialized, a control signal for controlling the restart of the serializer, the deserializer, the display screen and/or the display driving chip is sent out;
when the abnormal signals still exist after the serializer, the deserializer, the display screen and/or the display driving chip are/is analyzed, a prompt control signal is generated to control the display screen to display and prompt the information of the vehicle entertainment information display system needing to be maintained.
In particular, the invention also provides a vehicle which may include a vehicle entertainment information display system as described in any of the above.
The driving information display system is not provided with a control unit, and is directly controlled by the diagnosis control unit in the entertainment information host, so that the cost is reduced, and the design complexity of the system is reduced. The vehicle entertainment information display system software is only arranged in the entertainment information host, can quickly position the display problem, and avoids the phenomenon that the software display problem is positioned to one of a plurality of control units and is difficult to be determined. In addition, because the driving information display system is provided with no control unit, signals which are transferred from the outside to the driving information display system become signals transmitted inside the driving information display system, and therefore the reaction of a display screen in the driving information display system is quicker.
The vehicle entertainment information display system can diagnose the display screen and the display driving chip in the entertainment information host, and control the display screen, the display driving chip, the serializer and the deserializer according to the diagnosis result, so that the vehicle entertainment information display system of the embodiment meets the functional safety requirement.
The vehicle entertainment information display system provided by the invention combines hardware and software, and finally has the beneficial effects of reducing the cost of a single display screen, reducing the technical difficulty of display screen development, reducing the screen failure rate (no software failure), reducing the difficulty of solving display problems, avoiding mutual impoverishment of problem investigation between a screen and a host and meeting the ASIL B grade requirement of functional safety. Meanwhile, the vehicle entertainment information display system conforms to the trend of trend and meets the requirements of vehicle-mounted electronic products on the development of hardware integration and single piece simplification.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic block diagram of a vehicle entertainment information display system according to one embodiment of the present invention;
FIG. 2 is a schematic block diagram of a vehicle entertainment information display system according to another embodiment of the present invention.
Detailed Description
FIG. 1 is a schematic block diagram of a vehicle entertainment information display system according to one embodiment of the present invention. The present embodiment provides a vehicle entertainment information display system 100. the vehicle entertainment information display system 100 may include a driving information display system 10 and an entertainment information host 20. The driving information display system 10 may include a display screen 11, a display driving chip 12, and a deserializer 13. The display screen 11 is used for displaying driving information. The display driver chip 12 is configured to control the display screen 11 to display driving information, and is also configured to generate and output a display abnormal interrupt signal (display INT). The deserializer 13 is connected to the display driving chip 12, and is configured to receive the display abnormal interrupt signal (display INT) generated by the display driving chip 12. The infotainment host 20 may include a serializer 21 and a diagnostic control unit 22. The serializer 21 is connected to the deserializer 13 through a serial video line, and is configured to receive the display exception interrupt signal transmitted by the deserializer 13. The serial video line comprises two GMSL2 serial video lines that incorporate pass-through functionality. The diagnosis control unit 22 is connected to the serializer 21, and is configured to receive the display abnormal interrupt signal transmitted by the serializer 21, and read the display status information of the display driver chip 12 according to the display abnormal interrupt signal, so that the diagnosis control unit 22 controls the serializer 21, the deserializer 13, the display screen 11, and/or the display driver chip 12 according to the display status information.
In the embodiment, the driving information display system 10 is not provided with a control unit, and the driving information display system 10 is controlled directly by the diagnosis control unit 22 in the entertainment information host 20, so that the cost is reduced, and the complexity of system design is reduced. The software of the vehicle entertainment information display system 100 of the embodiment is only in the entertainment information host 20, and the solution to the display problem can be quickly positioned, thereby avoiding the phenomenon that the software display problem is positioned to one of a plurality of control units and is difficult to be clear. Furthermore, since there is no control unit in the driving information display system 10, many signals of external migration in the infotainment host 20 become entertainment host internal signal transmission, and thus the response of the display screen 11 in the driving information display system 10 is made faster.
The vehicle entertainment information display system 100 in this embodiment can diagnose the display screen 11 and the display driver chip 12 in the entertainment information host 20, and control the display screen 11, the display driver chip 12, the serializer 21 and the deserializer 13 according to the diagnosis result, so that the vehicle entertainment information display system 100 in this embodiment meets the functional safety requirement.
Specifically, the diagnosis control unit 22 in the present embodiment may be an RH850 chip of pizza or an 5748C chip of engiprep. The serializer 21 and the deserializer 13 may be a second generation of american communication chip that satisfies the ASIL B support function, and specifically may be a second generation of american communication video deserializer 13MAX96752 and a second generation of american communication video serializer MAX96789/MAX 96755. The serializer 21 and the deserializer 13 may be connected by a serial video line. watermark and CRC are encryption algorithms, where the CRC algorithm is used to meet ASIL a standards. watermark is the watermark, and is equivalent to adding the watermark to the image when the image is transmitted, and the side receiving the image can judge whether the image is transmitted abnormally according to the watermark. If there is an exception, a mismatch will cause the screen to enter a functional security mode. In actual use, the video serializer 21 and deserializer 13 must turn on the watermark and CRC functions. When the watermark is wrong, the video deserializer 13 is caused to close image output and send an abnormal signal of the deserializer 13, namely, an abnormal output monitoring signal of a chip of the deserializer 13 is sent out, and after the vehicle entertainment host receives the abnormal signal, the vehicle entertainment host can initialize and reset the video serializer in sequence and carry out screen switching operation again for recovery. Similarly, when CRC errors occur, a similar recovery operation is performed.
FIG. 2 is a schematic block diagram of a vehicle entertainment information display system according to another embodiment of the present invention. As a specific embodiment of the present invention, as shown in fig. 2, the display driving chip 12 in this embodiment is further configured to generate a pulse modulation signal (PWM) and transmit the PWM signal to the diagnostic control unit 22 through the serializer 21 and the deserializer 13, and the diagnostic control unit 22 is further configured to generate a control signal for controlling the serializer 21, the deserializer 13, the display screen 11 and/or the display driving chip 12 according to the pulse modulation signal.
In this embodiment, the pulse modulation signal has a fixed period, and when the period of the pulse modulation signal received by the diagnostic control unit 22 changes, it represents that an abnormality occurs in the pulse modulation signal.
Specifically, the diagnosis control unit 22 is configured to:
analyzing the period of the pulse modulation signal;
when the period of the pulse modulation signal is abnormal, a control signal for controlling the initialization of the deserializer 13 and the serializer 21 is generated;
after controlling the deserializer 13 and the serializer 21 to initialize, generating a control signal for controlling the display driving chip 12 to reset when analyzing that the period of the pulse modulation signal is still abnormal;
after the display driving chip 12 is controlled to reset, when the period of the pulse modulation signal is still abnormal, a control signal for controlling the display driving chip 12 to send out a control signal for controlling the display screen 11 to restart is generated.
In this embodiment, by monitoring the pulse modulation signal, it is possible to more easily know whether the display screen 11 or the display driver chip 12 is abnormal, so as to more quickly control the display screen 11, the display driver chip 12, the serializer 21 or the deserializer 13 to improve the fault and meet the requirement of functional safety.
As a specific embodiment of the present invention, the diagnostic control unit 22 is further configured to receive and process an enable control signal of the vehicle bus, and generate the on-screen switch enable signal according to the enable control signal. The driving information display system 10 further includes a plurality of power supplies 14 connected to the deserializer 13 and the display driving chip 12, respectively, to supply electric power to the deserializer 13 and the display driving chip 12, respectively. The diagnosis control unit 22 is hard-wired to the display driving chip 12, and the screen switch enable signal is transmitted to the power supply 14 through the hard-wired line to turn on or off the display screen 11.
The power supplies 14 in this embodiment need to be isolated from each other to supply power to different devices. The purpose of providing multiple sets of power supplies 14(DC/DC) in this embodiment is that the power supplies 14 for supplying power to the video deserializer 13 and the display driving chip 12 must be from different groups, and it can be ensured that the judgment reference voltage and the circuit to be judged are not supplied by the same power supply. Therefore, the reference standard for judging the power supply of the abnormal device cannot be the same as the power supply of the detected device, otherwise, the abnormal voltage cannot be judged.
Specifically, the enable control signal in the bus may be a touch operation of the occupant on the dashboard of the vehicle or a push button switch operation. When the driver or passenger actively sends out the enable control signal, the enable control signal is transmitted to the diagnosis control unit 22 through the bus. The diagnostic control unit 22 will then issue an on-screen switch enable signal and pass it directly to the power supply 14 via hard wiring to turn the display screen 11 on or off.
As a specific embodiment of the present invention, the deserializer 13 and the diagnostic control unit 22 are connected by an abnormal output line in this embodiment. The deserializer 13 is also configured to generate an abnormality detection signal for monitoring whether it is abnormal itself, and to transmit it to the diagnostic control unit 22 through an abnormality output line. The diagnosis control unit 22 is further configured to determine that all signals sent by the deserializer 13 to the diagnosis control unit 22 through the serializer 21 are invalid when the deserializer 13 is found to be abnormal according to the received abnormality monitoring signal.
As a specific embodiment of the present invention, the entertainment information host 20 in this embodiment may further include a main control unit 23, where the main control unit 23 includes a virtualization platform (QNX Hypervisor) and at least two operating systems (quinix and android), is connected to the diagnostic control unit 22 through an SPI, and the main control unit 23 is further connected to the serializer 21, and the main control unit 23 is configured to receive a display control signal obtained and processed by the diagnostic control unit 22 from a vehicle bus, generate a corresponding display picture signal according to the display control signal, and transmit the display picture signal to the display driving chip 12 through the serializer 21 and the deserializer 13.
Specifically, the main control unit 23 is further configured to generate a verification signal while obtaining the display screen signal, and transmit the verification signal to the diagnosis control unit 22 for verification. The main control unit 23 is further configured to transmit the display image signal to the display driving chip 12 when receiving the verification feedback signal sent by the diagnosis control unit 22 and used for verifying the verification signal, and when the verification feedback signal shows that the verification passes.
In the present embodiment, a verification process is required between the main control unit 23 and the diagnosis control unit 22, which ensures that the driving information display system 10 can display the corresponding driving information picture under the condition that the functional safety level ASIL a/B requirement is satisfied.
As another embodiment of the present invention, the power supply 14 of the present invention may also send a power supply abnormal interrupt signal (power supply INT) to monitor whether the power supply 14 is interrupted. The diagnostic control unit 22 receives the power source abnormality interrupt signal and reads the power source state signal of the power source 14 based on the power source abnormality interrupt signal.
In this embodiment, the display state information and the power supply state information are both obtained by periodically or intermittently triggering the reading of the abnormal code by the driving information display system 10. The display driver chip 12 in this embodiment needs to support reading of the component abnormal codes through the IIC interface, and when the driving information display system 10 reads the abnormal codes through periodic or interrupt triggering, the screen switching process may be performed according to the type of the abnormal codes. The abnormality code paid out from the display driver chip 12 corresponds to the display state information. That is, each exception code corresponds to one of the display status information.
The power IC in this embodiment also supports the IIC interface to read exception codes. When the driving information display system 10 reads the abnormal codes by periodic or interrupt triggering, the screen switching process may be performed according to the types of the abnormal codes. Similarly, the abnormal codes sent out in the power supply correspond to the power supply state information, wherein each abnormal code corresponds to one of the power supply state information.
As one of the embodiments, the diagnosis control unit 22 in the present embodiment is configured to:
determining an abnormal level of the driving information display system 10 according to the display state information, the power state information, the pulse modulation signal and the check feedback signal;
control signals for controlling the serializer 21, the deserializer 13, the display screen 11 and/or the display driving chip 12 are generated according to the abnormal level.
Specifically, the diagnosis control unit 22 in the present embodiment is configured to: when it is determined that the signal of the display screen 11 or the display driving chip 12 is unstable or the deserializer 13 is automatically turned off according to the received abnormal interrupt signal, the abnormal level of the driving information display system 10 may be defined as a first level, and the diagnosis control unit 22 issues a control enable signal for controlling the screen turn-off of the display screen 11 when the abnormal level of the driving information display system 10 is the first level. When the abnormality level of the driving information display system 10 is the first level, the vehicle entertainment information display system 100 of the present embodiment enters the functional safety state to satisfy the functional safety requirement.
The diagnostic control unit 22 is further configured to: when the pulse modulation signal is abnormal, the display state information indicates that the display screen 11 or the display driving chip 12 is abnormal, the power supply state information indicates that the power supply is abnormal, or the verification feedback signal indicates that the verification fails, the abnormal level of the driving information display system 10 may be defined as a second level, and when the abnormal level of the driving information display system 10 is the second level, the diagnosis control unit 22 sends a control signal for controlling the display driving chip 12, the serializer 21, or the deserializer 13 to initialize.
The diagnostic control unit 22 is further configured to: when the display driving chip 12, the serializer 21 or the deserializer 13 is initialized, the pulse modulation signal is still abnormal, the state information still has an abnormal signal or the check feedback signal shows that the check is still not passed, the abnormal level of the driving information display system 10 may be defined as a third level, and when the abnormal level of the driving information display system 10 is the third level, the diagnosis control unit 22 sends out a control signal for controlling the deserializer 21, the deserializer 13, the display screen 11 and/or the display driving chip 12 to restart.
The diagnostic control unit 22 is further configured to: when the abnormal signal still exists after the analyzing serializer 21, the deserializer 13, the display screen 11 and/or the display driving chip 12 is restarted, the abnormal level of the driving information display system 10 may be defined as a fourth level, and when the abnormal level of the driving information display system 10 is the fourth level, the diagnosis control unit 22 generates a prompt control signal to control the display screen 11 to display information prompting that the vehicle entertainment information display system 100 needs to be maintained. Specifically, when the abnormality level of the driving information display system 10 is the fourth level, the need to report to the 4S shop for maintenance is directly indicated on the display screen 11. If the maintenance prompt appears, the driver needs to send the vehicle to the 4S point for maintenance as soon as possible, so that safety accidents are avoided.
The degree of the abnormal level of the driving information display system 10 is sequentially increased, and the entire vehicle entertainment information display system 100 is autonomously diagnosed and autonomously maintained as much as possible through the control operation flow corresponding to each level, and when the autonomous maintenance cannot meet the requirement, the maintenance is prompted, thereby increasing the safety of the vehicle entertainment information display system 100.
The combined hardware and software design of the vehicle entertainment information display system 100 of the present embodiment ultimately provides beneficial results including: the cost of the single piece of the display screen 11 is reduced, the technical difficulty of development of the display screen 11 is reduced, the screen failure rate (no software failure) is reduced, the difficulty of solving the display problem is reduced, mutual impoverishment of problem investigation between the screen and the host is avoided, and the ASIL B grade requirement of functional safety is met. Meanwhile, the vehicle entertainment information display system 100 of the embodiment complies with the trend of trend and meets the requirements of vehicle-mounted electronic products on the development of hardware integration and single piece simplification.
As another specific example of the present invention, the present embodiment also provides a vehicle that may include the above vehicle entertainment information display system 100.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (9)
1. A vehicle entertainment information display system is characterized in that the system comprises a driving information display system and an entertainment information host,
the driving information display system includes:
the display screen is used for displaying driving information;
the display driving chip is used for controlling the display screen to display the driving information and generating and outputting a display abnormal interrupt signal; and
the deserializer is connected with the display driving chip and used for receiving the abnormal interrupt signal generated by the display driving chip;
the entertainment information host comprises:
the serializer is connected with the deserializer through a serial video line and used for receiving the display abnormal interrupt signal transmitted by the deserializer;
the diagnosis control unit is connected with the serializer and is used for receiving the display abnormal interrupt signal transmitted by the serializer and reading the display state information of the display driving chip according to the display abnormal interrupt signal, so that the diagnosis control unit controls the serializer, the deserializer, the display screen and/or the display driving chip according to the display state information;
the display driving chip is also used for generating a pulse modulation signal;
the diagnostic control unit is configured to:
analyzing the period of the pulse modulation signal;
when the period of the pulse modulation signal is abnormal, generating a control signal for controlling the initialization of the deserializer and the serializer;
after the deserializer and the serializer are controlled to be initialized, when the period of the pulse modulation signal is analyzed to be still abnormal, a control signal for controlling the display driving chip to reset is generated;
and after the display driving chip is controlled to be reset, when the period of the pulse modulation signal is analyzed to be still abnormal, generating a control signal for controlling the display driving chip to send out a control signal for controlling the display screen to be restarted.
2. The vehicle entertainment information display system of claim 1,
the display driving chip is further configured to transmit the pulse modulation signal to the diagnosis control unit through the serializer and the deserializer, and the diagnosis control unit is further configured to generate a control signal for controlling the serializer, the deserializer, the display screen and/or the display driving chip according to the pulse modulation signal.
3. The vehicle entertainment information display system of claim 2,
the diagnostic control unit is further configured to receive and process an enable control signal of the vehicle bus and generate an on-screen switch enable signal according to the enable control signal;
the driving information display system also comprises a plurality of power supplies which are respectively connected with the deserializer and the display driving chip so as to respectively provide electric energy for the deserializer and the display driving chip;
the diagnosis control unit is connected with the display driving chip through a hard wire, and the screen switch enabling signal is transmitted to the power supply through the hard wire so as to turn on or off the display screen.
4. The vehicle entertainment information display system of claim 2,
the deserializer is connected with the diagnosis control unit through an abnormal output line; the deserializer is also used for generating an abnormal detection signal for monitoring whether the deserializer is abnormal or not and transmitting the abnormal detection signal to the diagnosis control unit through the abnormal output line;
the diagnosis control unit is further configured to determine that all signals sent by the deserializer to the diagnosis control unit through the serializer are invalid when the deserializer is abnormal according to the received abnormal detection signal.
5. The vehicle entertainment information display system of claim 3,
the entertainment information host machine further comprises a main control unit, the main control unit comprises a virtualization platform and at least two operating systems, the diagnosis control unit is connected with the diagnostic control unit through an SPI (serial peripheral interface), the main control unit is further connected with the serializer, and deserializer are used for receiving display control signals acquired and processed by the diagnostic control unit from the vehicle bus, corresponding display picture signals are generated according to the display control signals, and the display picture signals are transmitted to the display driving chip through the serializer and the deserializer.
6. The vehicle entertainment information display system of claim 5,
the main control unit is also used for generating a check signal while obtaining the display picture signal, and transmitting the check signal to the diagnosis control unit for checking; the main control unit is further configured to transmit the display picture signal to the display driving chip when receiving a verification feedback signal sent by the diagnosis control unit and used for verifying the verification signal and when the verification feedback signal shows that the verification is passed.
7. The vehicle entertainment information display system of claim 6,
the power supply sends out a power supply abnormal interruption signal for monitoring whether the power supply is interrupted;
the diagnosis control unit receives the power supply abnormal interruption signal and reads a power supply state signal of the power supply according to the power supply abnormal interruption signal;
the diagnostic control unit is configured to:
determining the abnormal grade of the driving information display system according to the display state information, the power state information, the pulse modulation signal and the check feedback signal;
and generating control signals for controlling the serializer, the deserializer, the display screen and/or the display driving chip according to the abnormal grade.
8. The vehicle entertainment information display system of claim 7,
the diagnostic control unit is configured to:
when the display screen or the signal of the display driving chip is judged to be unstable or the deserializer is automatically closed according to the received abnormal interrupt signal, a control signal for controlling the display screen to be closed is sent out;
when the pulse modulation signal is abnormal, the display state information indicates that the display screen or the display driving chip is abnormal, the power state information indicates that the power supply is abnormal or the verification feedback signal indicates that verification fails, a control signal for controlling the initialization of the display driving chip, the serializer or the deserializer is sent out;
when the pulse modulation signal is still abnormal, the state information still has an abnormal signal or the verification feedback signal shows that the verification still fails after the display driving chip, the serializer or the deserializer are initialized, a control signal for controlling the restart of the serializer, the deserializer, the display screen and/or the display driving chip is sent out;
when the abnormal signals still exist after the serializer, the deserializer, the display screen and/or the display driving chip are/is analyzed, a prompt control signal is generated to control the display screen to display and prompt the information of the vehicle entertainment information display system needing to be maintained.
9. A vehicle comprising the vehicle entertainment information display system of any one of claims 1-8.
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| CN115214362B (en) * | 2021-12-15 | 2024-02-27 | 广州汽车集团股份有限公司 | Vehicle-mounted instrument system and control method thereof |
| CN114475246B (en) * | 2021-12-31 | 2024-03-26 | 浙江零跑科技股份有限公司 | Intelligent cabin instrument display system with display protection and display method |
| CN115230470A (en) * | 2022-07-29 | 2022-10-25 | 中国第一汽车股份有限公司 | Split type full-liquid-crystal combination instrument, information display method and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205439991U (en) * | 2015-12-25 | 2016-08-10 | 重庆德科电子仪表有限公司 | Show video large -size screen monitors virtual vehicle instrument of navigation |
| CN105922872B (en) * | 2016-05-25 | 2019-03-01 | 北京车和家信息技术有限公司 | Vehicle control system and vehicle |
| US10282330B2 (en) * | 2016-09-29 | 2019-05-07 | Amazon Technologies, Inc. | Configurable logic platform with multiple reconfigurable regions |
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| CN209401291U (en) * | 2018-12-12 | 2019-09-17 | 深圳市航盛电子股份有限公司 | A kind of multi-screen vehicle entertainment system |
| JP2020135206A (en) * | 2019-02-15 | 2020-08-31 | パナソニックＩｐマネジメント株式会社 | Image processing device, on-vehicle camera system, and image processing method |
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| CN112339679B (en) * | 2019-08-09 | 2022-04-26 | 广州汽车集团股份有限公司 | Vehicle-mounted display control system, method, terminal and vehicle |
| CN111414094B (en) * | 2020-03-11 | 2023-08-25 | 广州小鹏汽车科技有限公司 | Vehicle-mounted multi-screen display system and vehicle |
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| CN112506831B (en) * | 2020-12-03 | 2023-07-18 | 宁波弗浪科技有限公司 | Processing method of vehicle-mounted touch screen converter |
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