CN116962646A - Video transmission system, method and vehicle - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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Abstract
The invention discloses a video transmission system, a video transmission method and a vehicle. The system comprises: the system comprises an image processing module, an image conversion module and a screen display module, wherein the image processing module is used for processing received image data into central control video data and instrument video data and sending the central control video data and the instrument video data to the image conversion module; the image conversion module is used for respectively receiving the central control video data and the instrument video data through two serializers, respectively serializing the central control video data and the instrument video data into serial central control data and serial instrument data, and respectively sending the serial central control data and the serial instrument data to the screen display module; the screen display module is used for receiving the serial central control data and the serial instrument data sent by the image processing module, and respectively deserializing the serial central control data and the serial instrument data and then displaying the deserialized serial central control data and the deserialized serial instrument data. The system processes and transmits the central control video data and the instrument video data through different serializers, and can improve the definition and fluency of the central control screen and the instrument screen.
Description
Technical Field
The embodiment of the invention relates to the technical field of signal transmission, in particular to a video transmission system, a video transmission method and a vehicle.
Background
In the prior art, when video data of an instrument and a central control screen are displayed, the video data transmission of the instrument and the central control screen are commonly connected on the same video serializer in a mixed mode, or are respectively connected on the same video serializer with video data transmission of other reserved screens in a mixed mode, so that bandwidths of the other parties are inevitably occupied mutually, the bandwidths of the respective screens are reduced, the data transmission quantity is reduced, and the definition and the fluency of screen display are finally reduced.
Disclosure of Invention
The invention provides a video transmission system, a video transmission method and a vehicle, which are used for solving the problem of lower screen definition and smoothness in the prior art.
According to an aspect of the present invention, there is provided a video transmission system, the system comprising: the device comprises an image processing module, an image conversion module and a screen display module, wherein the image conversion module is respectively connected with the image processing module and the screen display module;
the image processing module is used for processing the received image data into central control video data and instrument video data and sending the central control video data and the instrument video data to the image conversion module;
the image conversion module is used for respectively receiving the central control video data and the instrument video data through different serializers, respectively serializing the central control video data and the instrument video data into serial central control data and serial instrument data, and respectively sending the serial central control data and the serial instrument data to the screen display module;
the screen display module is used for receiving the serial central control data and the serial instrument data sent by the image processing module, and respectively deserializing the serial central control data and the serial instrument data and then displaying the deserialized serial central control data and the deserialized serial instrument data.
According to another aspect of the present invention, there is provided a video transmission method, the method comprising:
the received image data are processed into central control video data and instrument video data through an image processing module and sent to an image conversion module;
receiving the central control video data and the instrument video data through different serializers of an image conversion module, and respectively serializing the central control video data and the instrument video data into serial central control data and serial instrument data and sending the serial central control data and the serial instrument data to the screen display module;
and receiving serial central control data and serial instrument data sent by the image processing module through a screen display module, and respectively deserializing the serial central control data and the serial instrument data and then displaying the deserialized serial central control data and the deserialized serial instrument data.
According to another aspect of the present invention there is provided a vehicle comprising at least a video transmission system according to any one of the embodiments of the present invention.
The embodiment of the invention provides a video transmission system, a video transmission method and a vehicle, wherein the system comprises the following components: the system comprises an image processing module, an image conversion module and a screen display module, wherein the image processing module is used for processing received image data into central control video data and instrument video data and sending the central control video data and the instrument video data to the image conversion module; the image conversion module is used for respectively receiving the central control video data and the instrument video data through two serializers, respectively serializing the central control video data and the instrument video data into serial central control data and serial instrument data, and respectively sending the serial central control data and the serial instrument data to the screen display module; the screen display module is used for receiving the serial central control data and the serial instrument data sent by the image processing module, and respectively deserializing the serial central control data and the serial instrument data and then displaying the deserialized serial central control data and the deserialized serial instrument data. The system processes and transmits the central control video data and the instrument video data through different serializers, can improve the definition and fluency of the central control screen and the instrument screen, and solves the problem of lower definition and fluency of the screen in the prior art.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a video transmission system according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a video transmission system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a video transmission system according to a second embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a chip according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of another chip according to an embodiment of the present invention;
fig. 6 is a flow chart of a video transmission method according to a third embodiment of the present invention;
fig. 7 is a schematic structural diagram of a vehicle according to a fourth embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention. It should be understood that the various steps recited in the method embodiments of the present invention may be performed in a different order and/or performed in parallel. Furthermore, method embodiments may include additional steps and/or omit performing the illustrated steps. The scope of the invention is not limited in this respect.
The term "including" and variations thereof as used herein are intended to be open-ended, i.e., including, but not limited to. The term "based on" is based at least in part on. The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments. Related definitions of other terms will be given in the description below.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that references to "one", "a plurality" and "a plurality" in this disclosure are intended to be illustrative rather than limiting, and those skilled in the art will appreciate that "one or more" is intended to be construed as "one or more" unless the context clearly indicates otherwise.
The names of messages or information interacted between the devices in the embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of such messages or information.
Example 1
Fig. 1 is a schematic structural diagram of a video transmission system according to a first embodiment of the present invention, where the system is applicable to a case of transmitting video data and displaying the video data on a screen, and the system may be implemented by software and/or hardware and is generally integrated on a vehicle, and in this embodiment, the vehicle includes, but is not limited to: common transportation vehicles, special-purpose vehicles, and the like.
As shown in fig. 1, a video transmission system according to a first embodiment of the present invention includes: the image processing module 10, the image conversion module 20 and the screen display module 30, wherein the image conversion module 20 is respectively connected with the image processing module 10 and the screen display module 30;
the image processing module 10 is configured to process the received image data into central control video data and meter video data and send the central control video data and the meter video data to the image conversion module 20;
the image conversion module 20 is configured to receive the central control video data and the meter video data through different serializers, and to serial the central control video data and the meter video data into serial central control data and serial meter data, and then send the serial central control data and the serial meter data to the screen display module 30;
the screen display module 30 is configured to receive the serial central control data and the serial meter data sent by the image processing module, and display the serial central control data and the serial meter data after respectively deserializing the serial central control data and the serial meter data.
The image processing module 10 may be a module for processing image data, and the image processing module 10 may acquire data that the vehicle needs to display on a screen. The image data may be data to be displayed on a screen in the vehicle, which may be acquired by a camera in the vehicle, or may be data generated in the vehicle. For example, the image data may be speed data that the vehicle needs to display on the meter during traveling. The image data may be classified into center control video data and meter video data according to the difference of display screens. The center control video data may be data to be displayed on a center control screen, and the meter video data may be data to be displayed on a meter screen.
In the present embodiment, image data to be displayed on a screen may be acquired by the image processing module 10, and the image data is divided into center control video data and meter video data according to the screen to be displayed and sent to the image conversion module 20. The connection manner of the image processing module 10 and the image conversion module 20 is not limited in this embodiment.
The image conversion module 20 may be a module for serializing video data. The image conversion module may include a serializer for processing the central control video data and a serializer for processing the meter video data. A serializer is a digital circuit that converts multiple parallel inputs into one serial output. The function of the serializer is to compress data onto a smaller transmission bandwidth, thereby increasing transmission speed and distance. The serial central control data may be serial central control video data, and the serial meter data may be serial meter video data.
In this embodiment, the central control video data and the meter video data may be respectively serialized by different serializers in the image conversion module 20, the central control video data is serialized to obtain serial central control data, the meter video data is serialized to obtain serial meter data, and the serial central control data and the serial meter data are sent to the screen display module 30. The connection mode of the image conversion module 20 and the screen display module 30 is not limited in this embodiment.
The screen display module 30 may be a module for displaying video data to be displayed.
In this embodiment, after the screen display module 30 receives the serial central control data and the serial meter data, it is further required to de-serialize the serial central control data and the serial meter data respectively, and display the de-serialized video data on the screen.
An embodiment of the present invention provides a video transmission system, including: the system comprises an image processing module, an image conversion module and a screen display module, wherein the image processing module is used for processing received image data into central control video data and instrument video data and sending the central control video data and the instrument video data to the image conversion module; the image conversion module is used for respectively receiving the central control video data and the instrument video data through two serializers, respectively serializing the central control video data and the instrument video data into serial central control data and serial instrument data, and respectively sending the serial central control data and the serial instrument data to the screen display module; the screen display module is used for receiving the serial central control data and the serial instrument data sent by the image processing module, and respectively deserializing the serial central control data and the serial instrument data and then displaying the deserialized serial central control data and the deserialized serial instrument data. The system processes and transmits the central control video data and the instrument video data through different serializers, can improve the definition and fluency of the central control screen and the instrument screen, and solves the problem of lower definition and fluency of the screen in the prior art.
On the basis of the above embodiments, modified embodiments of the above embodiments are proposed, and it is to be noted here that only the differences from the above embodiments are described in the modified embodiments for the sake of brevity of description.
In one embodiment, the screen display module 30 includes at least one deserializer, at least one center control display terminal, and at least one meter display terminal; the central control display terminal and the instrument display terminal are respectively connected with the deserializer;
the deserializer is configured to receive the serial central control data and the serial meter data sent by the image conversion module 20, and deserialize the serial central control data and the serial meter data to obtain deserialized central control data and deserialized meter data respectively; and sending the deserialized central control data to a central control display terminal, and sending the deserialized instrument data to an instrument display terminal.
The de-serializer is the inverse operation of the serializer, and can decompose a high-speed serial data stream into a plurality of parallel data streams so as to adapt to different operation requirements. The central control display terminal may be a display terminal for displaying central control video data, and the meter display terminal may be a display terminal for displaying meter video data. The de-serialized central control data may be de-serialized serial central control data, and the de-serialized meter data may be de-serialized serial meter data.
In this embodiment, the screen display module 30 may perform deserializing on the serial central control data and the serial instrument data through the deserializer to obtain deserialized central control data and deserialized instrument data, and send the deserialized central control data to the corresponding central control display terminal, and send the deserialized instrument data to the corresponding instrument display terminal. The central control display terminal and the meter display terminal in this embodiment may have one or more, which is not limited in this embodiment.
It should be noted that, in this embodiment, the same deserializer may be used to process the serial central control data and the serial instrument data, or different deserializers may be used; when interfaces used by the central control display terminal and the instrument display terminal are different, different deserializers are needed to be used respectively when processing serial central control data and serial instrument data.
Fig. 2 is a schematic structural diagram of a video transmission system according to an embodiment of the present invention, and fig. 2 is only an exemplary diagram, and the embodiment is not limited to the number of components. The broken line frame part of the screen display module is another option of the deserializer chip when the protocols used by the central control display terminal and the instrument display terminal are different.
The display terminal may select multiple display interfaces, such as multiple protocols of display interface (DisplayPort, DP)/(Embedded DisplayPort, eDP) or online data exchange (Online Data Interchange, OLDI), which depend on the screen selection, and the selection of the display terminal interface is not limited in this embodiment. As shown in fig. 2, wherein the central control display terminal and the meter display terminal may receive data using a DP/eDP or OLDI interface. When the central control display terminal or the instrument display terminal uses the DP/eDP interface, the chip of the deserializer used by the central control display terminal or the instrument display terminal can select DS90Ux984, and when the central control display terminal or the instrument display terminal uses the OLDI interface, the chip of the deserializer used by the central control display terminal or the instrument display terminal can select DS90Ux988.
In one embodiment, the deserializer includes: a first deserializer and a second deserializer; the first deserializer is connected with the central control display terminal, and the second deserializer is connected with the instrument display terminal;
the first deserializer is configured to receive serial central control data sent by the image conversion module 20, deserialize the serial central control data to obtain deserialized central control data, and send the deserialized central control data to a central control display terminal;
the second deserializer is configured to receive the serial meter data sent by the image conversion module 20, deserialize the serial meter data to obtain deserialized meter data, and send the deserialized meter data to the meter display terminal.
The first deserializer may be a deserializer for processing data of the central control display terminal, and the second deserializer may be a deserializer for processing data of the instrument display terminal. The types of the first deserializer and the second deserializer may be the same or different, and may be set according to actual situations, which is not limited in this embodiment.
In this embodiment, the screen display module 30 may separately process the video data of the center control display terminal and the video data of the meter display terminal through two deserializers.
Example two
Fig. 3 is a schematic structural diagram of a video transmission system according to a second embodiment of the present invention, where the second embodiment is optimized based on the above embodiments. For details not yet described in detail in this embodiment, refer to embodiment one.
As shown in fig. 3, a video transmission system according to a second embodiment of the present invention includes an image conversion module 20 including a first serializer 21 and a second serializer 22
The image processing module 10 is configured to process the received image data into central control video data and meter video data and send the central control video data and the meter video data to the image conversion module 20;
an image conversion module 20 including a first serializer 21 and a second serializer 22;
the first serializer 21 receives the central control video data through the display interface DP and serializes the central control video data into serial central control data based on the FPD-LINK protocol, and transmits the serial central control data to the screen display module 30 through AC coupling;
a second serializer 22 for receiving the meter video data through an MIPIDSI interface and serializing the meter video data into serial meter data based on the FPD-LINK protocol, and transmitting the serial meter data to the screen display module 30 through AC coupling;
the screen display module 30 is configured to receive the serial central control data and the serial meter data sent by the image processing module, and display the serial central control data and the serial meter data after respectively deserializing the serial central control data and the serial meter data.
The first serializer 21 may be a serializer for processing data of the central display terminal, and the second serializer 22 may be a serializer for processing data of the meter display terminal. The display interface DP is a standardized digital video interface standard, and the DP interface is free of authentication and authorization, is mainly used for connecting a video source with a display and other devices, and also supports carrying audio, USB and other forms of data. The video serial communication (Flat Panel Display Link, FPD-LINK) protocol is a high-speed digital video interface, mainly used for transmitting video data. (MIPIDisplay Serial Interface) MIPI-DSI is a serial interface applied to display technology, and MIPI-DSI transmits pixel information or instructions to a peripheral device in a serial manner and reads status information or pixel information from the peripheral device. During transmission, MIPI-DSI enjoys its own independent communication protocol including packet format and error correction detection mechanisms.
In this embodiment, the central control video data and the meter video data may be processed by two different serializers, respectively, and the protocols used by the first serializer and the second serializer for transmitting the video data interface conversion may be different. The chip of the first serializer may select DS90Ux983 and the chip of the second serializer may select DS90Ux981. Fig. 4 is a schematic circuit diagram of a chip according to an embodiment of the present invention, fig. 5 is a schematic circuit diagram of another chip according to an embodiment of the present invention, where fig. 4 is a circuit structure diagram of DS90Ux983, and fig. 5 is a circuit structure diagram of DS90Ux981.
Illustratively, as shown in FIG. 2, when the first serializer chip selects DS90Ux983, the second serializer chip selects DS90Ux981. DS90Ux981 supports two MIPIDSI inputs and two FPD-LINK IV outputs, and DS90Ux983 supports one set of DP interface inputs and two sets of FPD-LINK IV outputs. Therefore, the first serializer DS90Ux983 may receive the central control video data through a set of DP interfaces, and serialize the central control video data into serial central control data based on the FPD-LINK protocol, and transmit the serial central control data to the screen display module through AC coupling; the second serializer DS90Ux981 may receive the meter video data through two sets of MIPIDSI interfaces and serialize the meter video data into serial meter data based on the FPD-LINK protocol, and transmit to the screen display module through AC coupling.
According to the video transmission system provided by the embodiment of the invention, the first serializer and the second serializer are used for processing the central control video data and the instrument video data respectively, so that the definition and the fluency of the central control screen and the instrument screen can be improved, and the problem of lower definition and fluency of the screen in the prior art is solved.
In one embodiment, the image processing module includes:
the image processing unit is configured to receive image data, process the image data to obtain central control video data and meter video data, and send the central control video data and the meter video data to the image conversion module 20 through different data interfaces.
The image processing unit may be a unit for processing image data, and the image processing unit may be an integrated circuit (SOC), which may be an integrated circuit with a dedicated target, including a complete System and having the entire contents of embedded software. The data interface may be an interface to transfer data. And the SOC is integrated with a DP and a plurality of groups of MIPIDSI interfaces.
In this embodiment, the image data may be received by the image processing unit and divided into the center control video data and the meter video data, and the center control video data and the meter video data are transmitted to the image conversion module 20 through different data interfaces. As shown in fig. 2, the central control video data may be transmitted through a DP interface, and the meter video data may be transmitted through a MIPIDSI interface.
In one embodiment, the image processing unit and the image conversion module 20 communicate via I2C protocol, and use a general purpose I/O port to implement interrupt and control functions.
Wherein I2C (Inter-Integrated Circuit, I2C) is a universal bus protocol, I2C is a simple two-way two-wire bus protocol standard developed by philips, inc. A General-purpose I/O port (General-purposinput/OutputPorts, GPIO) is a General-purpose type of input/output for input/output of an electrical signal in a circuit to facilitate control of circuit components.
In this embodiment, the image processing unit may communicate with the serializer in the image conversion module 20 through the I2C protocol, and may also implement the interrupt and control functions through GPIO.
In one embodiment, the image processing module 10 is further configured to:
and a control instruction is sent to the screen display module 30 by using the transparent transmission function of the FPD-LINK to control the screen display module 30.
The transparent transmission function can be transparent transmission, namely, in the transmission process, the transparent transmission is transparent to the outside, and is only responsible for transmitting the service to be transmitted to the destination node, which is equivalent to a data line or a serial port line, and meanwhile, the transmission quality is guaranteed, and the transmitted service is not processed. The control instruction may be an instruction for controlling the screen display module 30.
In this embodiment, the image processing module 10 may also send a control instruction to the screen display module 30 using the transparent transmission function of the FPD-LINK. For example, the image processing module 10 may send an instruction to change certain data to the screen display module 30, thereby changing the data in the screen display module 30.
In one embodiment, the image processing module 10 is further configured to:
the display terminal information transmitted from the screen display module 30 is received to control the screen display module 30 according to the display terminal information.
The display terminal information may be information of the display terminal.
In this embodiment, the image processing module 10 may further obtain display terminal information sent by the screen display module 30, and determine the state of the current display terminal according to the display terminal information, so that a corresponding operation may be performed according to the state of the display terminal. For example, when it is determined that the display terminal is in error from the display terminal information, a warning may be issued to the driver.
The embodiment of the invention provides several specific implementation modes based on the technical scheme of each embodiment.
As a specific implementation manner of the present embodiment, as shown in fig. 2, since the current intelligent cabin controller SOC basically integrates DP and multiple sets of MIPIDSI interfaces, and the SOC can implement functional safety on MIPIDSI, in order to ensure functional safety of the display of the meter screen, a DS90Ux981 scheme is selected when transmitting the meter video data, and the DS90Ux981 supports two paths of MIPIDSI input and two paths of FPD-LINK IV output. The DP interface realizes the display of an android system (or other systems), so that for a central control screen, DS90Ux983 is selected to transmit central control video data so as to realize a central control entertainment function, and DS90Ux983 supports one set of DP interface input and two sets of FPD-LINK IV output.
In this embodiment, the central control video data (with the highest bandwidth of 32.4 Gbps) can be serially formed into two paths of FPD-LINK4 (with the highest bandwidth of 27 Gbps) protocols through the DS90Ux983 chip through the complete 4lane DP interface, and the data required by the central control screen can be deserialized and displayed through AC coupling in the screen display module through the deserializer. In the same way, the instrument video data (with the bandwidth of 20Gbps at maximum) can be serially formed into two paths of FPD-LINK4 (with the bandwidth of 21.6Gbps at maximum) through a DS90Ux981 chip through two paths of complete 4Lane MIPIDSI interfaces, and the data required by an instrument screen can be deserialized and displayed through AC coupling through a deserializer at a screen display module. Taking 4K resolution 4096X2160 as an example for calculation, under the condition of displaying 60 frames of bit depth and 30 bits of blanking coefficient 1.1, the data size is 4096X2160X1.1X60X30 approximately 17.5Gbit, and the highest bandwidths of the two screen schemes are 27Gbps (central control) and 20Gbps (instrument), so that the transmission requirements are met.
From fig. 4 and 4, it can be seen from the principle application that DS90Ux983 supports a complete 4-lane DP (8.1 Gbps per lane bandwidth) data interface, while DS90Ux981 supports two complete sets of 4-lane MIPIDSI (2.5 Gbps per lane bandwidth) interfaces. Except different protocols converted by the input interface, the two screen chips of the central control and the instrument are basically consistent in use mode, and two groups of FPD-LINK IV outputs are supported. The SOC and the two serializers are communicated through an I2C protocol, the interrupt and control functions are realized by using GPIO, and meanwhile, the remote equipment can be controlled and some information of the remote equipment can be read by using the transparent transmission function of the FPD-LINK.
The video transmission system provided by the embodiment can be suitable for all vehicle-mounted instruments and central control screens to realize a 4K60Hz full-high-definition video display scheme, and can be used for improving the definition and fluency of the current vehicle-mounted instruments and central control screens. In the embodiment, the video data transmission of the instrument screen and the central control screen are distinguished, and the two types of chips DS90Ux983 and DS90Ux981 based on the FPD-LINK4 are utilized, so that the vehicle-mounted instrument and the central control screen are improved, and 4K60Hz full-high-definition video display is realized.
Example III
Fig. 6 is a flowchart of a video transmission method according to a third embodiment of the present invention, which is applicable to a case of transmitting video data and displaying the video data on a screen.
As shown in fig. 6, a video transmission method provided in a third embodiment of the present invention includes:
s310, the received image data are processed into central control video data and instrument video data through the image processing module and sent to the image conversion module.
The image processing module may be a module for processing image data, and the image processing module may acquire data that the vehicle needs to display on a screen. The image data may be data to be displayed on a screen in the vehicle, which may be acquired by a camera in the vehicle, or may be data generated in the vehicle.
In this embodiment, the image processing module may acquire the image data to be displayed on the screen, and divide the image data into the central control video data and the meter video data according to the screen to be displayed, and send the data to the image conversion module. The connection mode of the image processing module and the image conversion module is not limited in this embodiment.
S320, receiving the central control video data and the instrument video data through different serializers of the image conversion module, and respectively serializing the central control video data and the instrument video data into serial central control data and serial instrument data and sending the serial central control data and the serial instrument data to the screen display module.
The image conversion module may be a module for serializing video data. The image conversion module may include a serializer for processing the central control video data and a serializer for processing the meter video data. A serializer is a digital circuit that converts multiple parallel inputs into one serial output.
In this embodiment, the central control video data and the meter video data may be respectively serialized by different serializers in the image conversion module, the central control video data may be serialized to obtain serial central control data, the meter video data may be serialized to obtain serial meter data, and the serial central control data and the serial meter data may be sent to the screen display module.
S330, receiving the serial central control data and the serial instrument data sent by the image processing module through the screen display module, and respectively deserializing the serial central control data and the serial instrument data and then displaying the deserialized serial central control data and the deserialized serial instrument data. The screen display module may be a module for displaying video data to be displayed.
In this embodiment, after the screen display module receives the serial central control data and the serial meter data, the serial central control data and the serial meter data need to be respectively deserialized, and the deserialized video data is displayed on the screen.
According to the video transmission method provided by the third embodiment of the invention, the image processing module is used for processing the received image data into the central control video data and the instrument video data and sending the central control video data and the instrument video data to the image conversion module; receiving the central control video data and the instrument video data through different serializers of an image conversion module, and respectively serializing the central control video data and the instrument video data into serial central control data and serial instrument data and sending the serial central control data and the serial instrument data to the screen display module; and receiving serial central control data and serial instrument data sent by the image processing module through a screen display module, and respectively deserializing the serial central control data and the serial instrument data and then displaying the deserialized serial central control data and the deserialized serial instrument data. The definition and fluency of the central control screen and the instrument screen can be improved by processing and transmitting the central control video data and the instrument video data through different serializers, and the problem of lower definition and fluency of the screen in the prior art is solved.
In one embodiment, the central control video data is received through a display interface DP of a first serializer, and is serialized into serial central control data based on the FPD-LINK protocol, and is sent to the screen display module through AC coupling;
and receiving the instrument video data through an MIPIDSI interface of a second serializer, serializing the instrument video data into serial instrument data based on an FPD-LINK protocol, and sending the serial instrument data to the screen display module through AC coupling.
The first serializer may be a serializer for processing data of the central display terminal, and the second serializer may be a serializer for processing data of the meter display terminal.
In this embodiment, the central control video data and the meter video data may be processed by two different serializers, respectively, and the protocols used by the first serializer and the second serializer for transmitting the video data interface conversion may be different. The chip of the first serializer may select DS90Ux983 and the chip of the second serializer may select DS90Ux981.
In one embodiment, the deserializer receives the serial central control data and the serial instrument data sent by the image conversion module, and deserializes the serial central control data and the serial instrument data to obtain deserialized central control data and deserialized instrument data respectively; and sending the deserialized central control data to a central control display terminal, and sending the deserialized instrument data to an instrument display terminal.
In this embodiment, the screen display module may perform deserializing on the serial central control data and the serial instrument data through the deserializer to obtain deserialized central control data and deserialized instrument data, and send the deserialized central control data to the corresponding central control display terminal, and send the deserialized instrument data to the corresponding instrument display terminal. In one embodiment, a first deserializer receives serial central control data sent by the image conversion module, deserializes the serial central control data to obtain deserialized central control data, and sends the deserialized central control data to a central control display terminal;
and receiving the serial instrument data sent by the image conversion module through a second deserializer, deserializing the serial instrument data to obtain deserialized instrument data, and sending the deserialized instrument data to an instrument display terminal.
The first deserializer may be a deserializer for processing data of the central control display terminal, and the second deserializer may be a deserializer for processing data of the instrument display terminal. The types of the first deserializer and the second deserializer may be the same or different, and may be set according to actual situations, which is not limited in this embodiment.
In this embodiment, the screen display module may separately process the video data of the center control display terminal and the video data of the meter display terminal through two deserializers.
In one embodiment, the image processing unit receives image data, processes the image data to obtain central control video data and meter video data, and sends the central control video data and the meter video data to the image conversion module through different data interfaces.
Wherein the image processing unit may be a unit for processing image data. The data interface may be an interface to transfer data.
In this embodiment, the image processing unit may receive the image data, divide the image data into the central control video data and the meter video data, and send the central control video data and the meter video data to the image conversion module through different data interfaces.
In one embodiment, the image processing unit and the image conversion module communicate through an I2C protocol, and a general purpose I/O port is used to implement interrupt and control functions.
In this embodiment, the image processing unit may communicate with the serializer in the image conversion module through the I2C protocol, and may also implement the interrupt and control functions through GPIO.
In one embodiment of the present invention, in one embodiment,
and sending a control instruction to the screen display module by using the transparent transmission function of the FPD-LINK so as to control the screen display module.
In this embodiment, the image processing module may also send a control instruction to the screen display module by using the transparent transmission function of the FPD-LINK. For example, the image processing module may send an instruction to the screen display module to change certain data, thereby changing the data in the screen display module.
In one embodiment of the present invention, in one embodiment,
and receiving display terminal information sent by the screen display module so as to control the screen display module according to the display terminal information.
In this embodiment, the image processing module may further obtain display terminal information sent by the screen display module, and determine a current state of the display terminal according to the display terminal information, so that a corresponding operation may be performed according to the state of the display terminal.
Example IV
Fig. 7 is a schematic structural diagram of a vehicle according to a fourth embodiment of the present invention, where, as shown in fig. 7, the vehicle at least includes a video transmission system according to any one of the embodiments of the present invention, and has corresponding functional modules and beneficial effects of the system.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. A video transmission system, the system comprising: the device comprises an image processing module, an image conversion module and a screen display module, wherein the image conversion module is respectively connected with the image processing module and the screen display module;
the image processing module is used for processing the received image data into central control video data and instrument video data and sending the central control video data and the instrument video data to the image conversion module;
the image conversion module is used for respectively receiving the central control video data and the instrument video data through different serializers, respectively serializing the central control video data and the instrument video data into serial central control data and serial instrument data, and respectively sending the serial central control data and the serial instrument data to the screen display module;
the screen display module is used for receiving the serial central control data and the serial instrument data sent by the image processing module, and respectively deserializing the serial central control data and the serial instrument data and then displaying the deserialized serial central control data and the deserialized serial instrument data.
2. The system of claim 1, wherein the image conversion module comprises a first serializer and a second serializer;
the first serializer receives the central control video data through a display interface DP, and serializes the central control video data into serial central control data based on an FPD-LINK protocol, and sends the serial central control data to the screen display module through AC coupling;
and the second serializer is used for receiving the instrument video data through the MIPIDSI interface, serializing the instrument video data into serial instrument data based on an FPD-LINK protocol, and sending the serial instrument data to the screen display module through AC coupling.
3. The system of claim 1, wherein the screen display module comprises at least one deserializer, at least one central control display terminal, and at least one meter display terminal; the central control display terminal and the instrument display terminal are respectively connected with the deserializer;
the deserializer is used for receiving the serial central control data and the serial instrument data sent by the image conversion module, and respectively deserializing the serial central control data and the serial instrument data to obtain deserialized central control data and deserialized instrument data; and sending the deserialized central control data to a central control display terminal, and sending the deserialized instrument data to an instrument display terminal.
4. The system of claim 3, wherein the deserializer comprises: a first deserializer and a second deserializer; the first deserializer is connected with the central control display terminal, and the second deserializer is connected with the instrument display terminal;
the first deserializer is used for receiving the serial central control data sent by the image conversion module, deserializing the serial central control data to obtain deserialized central control data, and sending the deserialized central control data to a central control display terminal;
the second deserializer is used for receiving the serial instrument data sent by the image conversion module, deserializing the serial instrument data to obtain deserialized instrument data, and sending the deserialized instrument data to an instrument display terminal.
5. The system of claim 1, wherein the image processing module comprises:
the image processing unit is used for receiving the image data, processing the image data to obtain central control video data and meter video data, and sending the central control video data and the meter video data to the image conversion module through different data interfaces.
6. The system of claim 5, wherein the image processing unit and the image conversion module communicate via an I2C protocol, and wherein the interrupt and control functions are implemented using a universal I/O port.
7. The system of claim 1, wherein the image processing module is further configured to:
and sending a control instruction to the screen display module by using the transparent transmission function of the FPD-LINK so as to control the screen display module.
8. The system of claim 1, wherein the image processing module is further configured to:
and receiving display terminal information sent by the screen display module so as to control the screen display module according to the display terminal information.
9. A method of video transmission, the method comprising:
the received image data are processed into central control video data and instrument video data through an image processing module and sent to an image conversion module;
receiving the central control video data and the instrument video data through different serializers of an image conversion module, and respectively serializing the central control video data and the instrument video data into serial central control data and serial instrument data and sending the serial central control data and the serial instrument data to the screen display module;
and receiving serial central control data and serial instrument data sent by the image processing module through a screen display module, and respectively deserializing the serial central control data and the serial instrument data and then displaying the deserialized serial central control data and the deserialized serial instrument data.
10. A vehicle comprising at least a video transmission system according to any one of claims 1-8.
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| CN117676264A (en) * | 2024-01-24 | 2024-03-08 | 南京仁芯科技有限公司 | Data transmitting device, data receiving device and electronic device |
| CN117676264B (en) * | 2024-01-24 | 2024-04-30 | 南京仁芯科技有限公司 | Data transmitting device, data receiving device and electronic device |
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