CN220367735U - CMS display driving control system and electronic rearview mirror - Google Patents
CMS display driving control system and electronic rearview mirror Download PDFInfo
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- CN220367735U CN220367735U CN202321587424.3U CN202321587424U CN220367735U CN 220367735 U CN220367735 U CN 220367735U CN 202321587424 U CN202321587424 U CN 202321587424U CN 220367735 U CN220367735 U CN 220367735U
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Abstract
The utility model provides a CMS display drive control system and an electronic rearview mirror, wherein the system comprises a camera, a system-level chip, a display, a serializer and a deserializer with a data transmission function; the camera is connected with the system-level chip, the system-level chip is connected with the serializer, the serializer is connected with the deserializer, and the deserializer is connected with the display; monitoring the rear of the vehicle through a camera, transmitting monitoring data to a system-level chip, processing the monitoring data by adopting the system-level chip, and transmitting the processed monitoring data to a serializer; serial data conversion is carried out on the monitoring data based on the serializer, and a serial monitoring signal obtained through conversion is output to the deserializer; the deserializer deserializes the serial monitoring signal and outputs the serial monitoring signal to the display; the system-in-chip also indirectly drives and controls the display through the serializer and the deserializer. The utility model indirectly drives and controls the display through the system-level chip, and solves the technical problem of high cost caused by the need of adding a chip driving circuit for CMS display driving.
Description
Technical Field
The utility model relates to the field of automobile spare and accessory parts, in particular to a CMS display driving control system and an electronic rearview mirror.
Background
In abroad, CMS (camera monitor system, electronic rearview mirror) has become very popular in vehicles, and more automobile spare and accessory parts manufacturers in China begin to develop CMS electronic rearview mirror systems in order to quickly preempt the automobile front-loading market. Compared with the traditional rearview mirror, the electronic rearview mirror has many advantages, such as wider view field, clearer images, no influence of rain and snow weather, under the irradiation of sun glare in daytime or high beam light of a rear vehicle at night, the CMS can eliminate the influence of strong light irradiation through an image processing algorithm, and under the condition of weaker light at night, the CMS can also make the image of the electronic rearview mirror clearer through an image enhancement technology, so that a driver has better driving experience and is safer. The CMS system will be more and more widely used in future automotive applications, and is of great practical value.
Currently, in CMS solutions proposed by most automobile spare and accessory manufacturers, an MCU (micro controller unit) is generally used to directly drive an LCD (Liquid Crystal Display) or an OLED (Organic Light-Emitting Diode) on a CMS display driver, and the solutions require an additional chip driving circuit on a hardware circuit, which is costly.
Disclosure of Invention
In view of the foregoing, it is necessary to provide a CMS display driving control system and an electronic rearview mirror for solving the technical problem that the cost is high due to the additional chip driving circuit required for the existing CMS display driving.
In order to solve the problems, the utility model provides a CMS display drive control system, which comprises a camera, a system-in-chip, a display, a serializer and a deserializer with a data transparent transmission function;
the camera is connected with the system-level chip, the system-level chip is connected with the serializer, the serializer is connected with the deserializer, and the deserializer is connected with the display;
the camera is used for monitoring the rear of the vehicle and transmitting monitoring data to the system-in-chip;
the system-in-chip is used for processing the monitoring data and then transmitting the processed monitoring data to the serializer;
the serializer is used for carrying out serial data conversion on the monitoring data processed by the system-in-chip to obtain a serial monitoring signal, and outputting the serial monitoring signal to the deserializer;
the deserializer is used for deserializing the serial monitoring signal and outputting the serial monitoring signal to the display;
the system-in-chip is also used for indirectly driving and controlling the display to operate through the serializer and the deserializer.
Optionally, a photosensitive sensor is also included;
wherein the photosensitive sensor is connected with the deserializer;
the photosensitive sensor is used for collecting the brightness value of the vehicle rearview mirror.
Optionally, the system-level chip sets the four paths of I2C buses as a transparent transmission mode by configuring the serializer and the deserializer, so as to obtain a first transparent transmission bus, a second transparent transmission bus, a third transparent transmission bus and a fourth transparent transmission bus;
the first transparent bus and the second transparent bus are arranged between the system-in-chip and the serializer, the third transparent bus is arranged between the deserializer and the photosensitive sensor, and the fourth transparent bus is arranged between the deserializer and the display.
Optionally, the first transparent bus and the third transparent bus correspond to each other, and the second transparent bus and the fourth transparent bus correspond to each other.
Optionally, the system-in-chip is further configured to read the brightness value acquired by the photosensitive sensor through the first transparent bus and the third transparent bus.
Optionally, the system-in-chip configures three GPIO interfaces of the deserializer as a RST interface, a VDDI-OUT interface, and a VCI-OUT interface, respectively, through a serializer.
Optionally, the device further comprises a power switch;
the power switch is arranged between the deserializer and the display, the input end of the power switch is connected with the deserializer, and the other end of the power switch is connected with the display.
Optionally, the serializer and the deserializer are connected by adopting a video stream twisted pair.
Furthermore, the utility model also provides an electronic rearview mirror, which comprises the CMS display driving control system.
The beneficial effects of adopting the embodiment are as follows: the CMS display driving control system provided by the utility model monitors the rear of the vehicle through the camera and transmits monitoring data to the system-level chip; processing the monitoring data by adopting a system-level chip and transmitting the processed monitoring data to a serializer; serial data conversion is carried out on the monitoring data processed by the system-in-chip based on the serializer, so that a serial monitoring signal is obtained, and the serial monitoring signal is output to the deserializer; the serial monitoring signal is deserialized through the deserializer and then output to the display; the system-in-chip also indirectly drives and controls the operation of the display through the serializer and the deserializer. The utility model indirectly drives and controls the display through the system-level chip under the condition of ensuring the normal work of the CMS, and solves the technical problem of high cost caused by the need of adding a chip driving circuit for CMS display driving.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an embodiment of a CMS display driving control system according to the present utility model.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the technical solutions should be considered that the combination does not exist and is not within the scope of protection claimed by the present utility model.
The embodiment of the utility model provides a CMS display driving control system and an electronic rearview mirror, which are respectively described below.
Fig. 1 is a schematic structural diagram of an embodiment of a CMS display driving control system 10 provided in the present utility model, where, as shown in fig. 1, the CMS display driving control system 10 includes a camera 11, a system-on-chip 12, a display 13, a serializer 14 and a deserializer 15 with a data transparent transmission function;
the camera 11 is connected with the system-in-chip 12, the system-in-chip 12 is connected with the serializer 14, the serializer 14 is connected with the deserializer 15, and the deserializer 15 is connected with the display 13;
the camera 11 is used for monitoring the rear of the vehicle and transmitting monitoring data to the system-in-chip 12;
the system-in-chip 12 is used for processing the monitoring data and transmitting the monitoring data to the serializer 14;
the serializer 14 is used for performing serial data conversion on the monitoring data processed by the system-in-chip 12 to obtain a serial monitoring signal, and outputting the serial monitoring signal to the deserializer 15;
the deserializer 15 is used for deserializing the serial monitoring signal and outputting the serial monitoring signal to the display 13;
the system-in-chip 12 is also used to indirectly drive and control the operation of the display 13 through the serializer 14 and the deserializer 15.
It should be noted that, the model of the system-in-chip 12 is Zynq ultrascale+axu3eg, and the system-in-chip performs color restoration, image translation, clipping, scaling and other processes on the original monitoring data input by the camera through the existing ISP image processing function, and outputs the processed data to the serializer 14.
Compared with the prior art, the CMS display drive control system 10 provided by the utility model monitors the rear of the vehicle through the camera 11 and transmits monitoring data to the system-in-chip 12; the system-level chip 12 is adopted to process the monitoring data and then transmit the monitoring data to the serializer 14; serial data conversion is carried out on the monitoring data processed by the system-in-chip 12 based on the serializer 14, so that a serial monitoring signal is obtained, and the serial monitoring signal is output to the deserializer 15; the serial monitoring signal is deserialized through the deserializer 15 and then output to the display 13; the system-in-chip 12 also indirectly drives and controls the operation of the display 13 through the serializer 14 and the deserializer 15. The utility model indirectly drives and controls the display 13 through the system-level chip 12 under the condition of ensuring the normal work of the CMS, and solves the technical problem of high cost caused by the need of adding a chip driving circuit for CMS display driving.
It should be noted that, in this embodiment, the serializer 14 and the deserializer 15 both use the serializer 14 and the deserializer 15 of the meixin company, which not only can realize the transmission of the high-speed video stream signal, but also has the data transparent function, and can realize the register control, so that the system-in-chip 12 can indirectly drive and control the display 13 through the data transparent function, without adding any chip driving circuit, thereby achieving the purpose of saving cost.
In some embodiments of the present utility model, the CMS display drive control system 10 also includes a photosensitive sensor 16;
wherein the photosensor 16 is connected with the deserializer 15;
the photosensor 16 is used to collect the brightness value of the vehicle mirror.
It should be noted that, in the present embodiment, the photosensor 16 is defined as a slave control device for acquiring the brightness value of the vehicle rearview mirror, and the system-in-chip 12 can acquire the brightness value from the photosensor 16 through the data transmission of the serializer 14 and the deserializer 15, so that the image processing program preset in the system-in-chip 12 adjusts the display 13 according to the brightness value to eliminate the influence of the strong light.
In some embodiments of the present utility model, the system-in-chip 12 sets the four-way I2C bus to a transparent mode by configuring the serializer 14 and the deserializer 15, and obtains a first transparent bus I2C1, a second transparent bus I2C2, a third transparent bus I2C3, and a fourth transparent bus I2C4;
the first transparent bus I2C1 and the second transparent bus I2C2 are disposed between the system-in-chip 12 and the serializer 14, the third transparent bus I2C3 is disposed between the deserializer 15 and the photosensitive sensor 16, and the fourth transparent bus I2C4 is disposed between the deserializer 15 and the display 13.
It can be understood that in this embodiment, the system-in-chip 12 and the serializer 14 are connected by buses, where four buses are provided between the system-in-chip 12 and the serializer 14, one of the buses is a configuration bus I2C0, the system-in-chip 12 can configure the serializer 14 and the deserializer 15 through the I2C0, two buses in the four buses are configured by the system-in-chip 12 into a first transparent bus I2C1 and a second transparent bus I2C2, and the last bus is a video stream signal transmission bus for transmitting the monitoring video data; the deserializer 15 has three bus outputs, two of which are configured by the system-in-chip 12 through the configuration bus I2C0 into a third transparent bus I2C3 and a fourth transparent bus I2C4, and the last one is a video stream signal transmission bus.
In some embodiments of the present utility model, the first transparent bus I2C1 corresponds to the third transparent bus I2C3, and the second transparent bus I2C2 corresponds to the fourth transparent bus I2C 4.
It can be understood that, when the transparent buses are configured, the first transparent bus I2C1 and the third transparent bus I2C3 are configured as a channel, the second transparent bus I2C2 and the fourth transparent bus I2C4 are configured as a channel, the first transparent bus I2C1 and the third transparent bus I2C3 realize transparent transmission between the system-in-chip 12 and the photosensitive sensor 16, and the second transparent bus I2C2 and the fourth transparent bus I2C4 realize transparent transmission between the system-in-chip 12 and the display 13, so that a function of driving and controlling the photosensitive sensor 16 and the display 13 without adding a chip driving circuit is realized.
In some embodiments of the present utility model, the system-in-chip 12 is further configured to read the brightness value collected by the photosensitive sensor 16 through the first transparent bus I2C1 and the third transparent bus I2C 3.
It can be understood that, through the first transparent transmission bus I2C1 and the third transparent transmission bus I2C3, the system-level chip 12 is indirectly connected with the photosensitive sensor 16, and the brightness value of the photosensitive sensor 16 can be obtained without data processing, so that the function setting of the photosensitive sensor 16 can be realized, and the system-level chip is simple and has higher real-time performance.
In some embodiments of the present utility model, the system-on-chip 12 configures the three GPIO interfaces of the deserializer 15 as a RST interface, a VDDI-OUT interface, and a VCI-OUT interface, respectively, through the serializer 14.
It should be noted that, in this embodiment, the system-in-chip 12 configures the GPIO interface of the deserializer 15 into an output mode through the configuration bus I2C0, and corresponds to the RST interface, the two power output control interfaces VDDI-OUT interface and VCI-OUT interface of the reset control function of the display 13, so as to control the reset of the display 13 and the on/off of the power supply.
In some embodiments of the present utility model, the CMS display drive control system 10 also includes a power switch 17;
the power switch 17 is disposed between the deserializer 15 and the display 13, an input end of the power switch 17 is connected with the deserializer 15, and the other end of the power switch 17 is connected with the display 13.
In this embodiment, the input terminal of the power switch 17 is connected to the deserializer 15 through the VDDI-OUT interface and the VCI-OUT interface, and the output terminal of the power switch 17 is connected to the power input terminal of the display 13 under the control of the system-in-chip 12.
In some embodiments of the present utility model, the serializer 14 and the deserializer 15 are connected by using a twisted pair video stream.
It can be appreciated that in this embodiment, the twisted pair of video streams has long transmission distance and good anti-interference capability, and can support multiplexing, so that the twisted pair of video streams is suitable for video signal transmission.
In this embodiment, the hardware structure of the CMS display driving control system 10 is more concise by implementing transparent transmission between the system-level chip 12 and the photosensitive sensor 16 and the display 13, and a control chip and related peripheral circuits thereof are saved, so that the cost is reduced, the software development work about the control end of the display 13 is also avoided, and the development period is shortened.
Further, the embodiment also provides an electronic rearview mirror, which includes the CMS display driving control system, and the specific embodiment of the electronic rearview mirror refers to the embodiment of the CMS display driving control system and is not described herein.
The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model.
Claims (9)
1. The CMS display driving control system is characterized by comprising a camera, a system-level chip, a display, a serializer and a deserializer with a data transparent transmission function;
the camera is connected with the system-level chip, the system-level chip is connected with the serializer, the serializer is connected with the deserializer, and the deserializer is connected with the display;
the camera is used for monitoring the rear of the vehicle and transmitting monitoring data to the system-in-chip;
the system-in-chip is used for processing the monitoring data and then transmitting the processed monitoring data to the serializer;
the serializer is used for carrying out serial data conversion on the monitoring data processed by the system-in-chip to obtain a serial monitoring signal, and outputting the serial monitoring signal to the deserializer;
the deserializer is used for deserializing the serial monitoring signal and outputting the serial monitoring signal to the display;
the system-in-chip is also used for indirectly driving and controlling the display to operate through the serializer and the deserializer.
2. The CMS display drive control system of claim 1, further comprising a photosensitive sensor;
wherein the photosensitive sensor is connected with the deserializer;
the photosensitive sensor is used for collecting the brightness value of the vehicle rearview mirror.
3. The CMS display drive control system of claim 2, wherein the system-on-chip obtains a first pass-through bus, a second pass-through bus, a third pass-through bus, and a fourth pass-through bus by configuring the serializer and the deserializer to set a four-way I2C bus to pass-through mode;
the first transparent bus and the second transparent bus are arranged between the system-in-chip and the serializer, the third transparent bus is arranged between the deserializer and the photosensitive sensor, and the fourth transparent bus is arranged between the deserializer and the display.
4. The CMS display drive control system of claim 3, wherein the first transparent bus corresponds to the third transparent bus, and the second transparent bus corresponds to the fourth transparent bus.
5. The CMS display drive control system of claim 4, wherein the system-on-chip is further configured to read the luminance values acquired by the photosensitive sensors via the first transparent bus and the third transparent bus.
6. The CMS display drive control system of claim 5, wherein the system-on-chip configures the three GPIO interfaces of the deserializer as a RST interface, a VDDI-OUT interface, and a VCI-OUT interface, respectively, through a serializer.
7. The CMS display drive control system of claim 6, further comprising a power switch;
the power switch is arranged between the deserializer and the display, the input end of the power switch is connected with the deserializer, and the other end of the power switch is connected with the display.
8. The CMS display drive control system of claim 7, wherein the serializer and the deserializer are connected using a video stream twisted pair.
9. An electronic rear view mirror comprising the CMS display drive control system of any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321587424.3U CN220367735U (en) | 2023-06-20 | 2023-06-20 | CMS display driving control system and electronic rearview mirror |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321587424.3U CN220367735U (en) | 2023-06-20 | 2023-06-20 | CMS display driving control system and electronic rearview mirror |
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| Publication Number | Publication Date |
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| CN220367735U true CN220367735U (en) | 2024-01-19 |
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| CN202321587424.3U Active CN220367735U (en) | 2023-06-20 | 2023-06-20 | CMS display driving control system and electronic rearview mirror |
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- 2023-06-20 CN CN202321587424.3U patent/CN220367735U/en active Active
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