CN213990854U

CN213990854U - Vehicle-mounted LVDS signal monitoring system

Info

Publication number: CN213990854U
Application number: CN202023039691.6U
Authority: CN
Inventors: 赵振峰; 李发刚; 王子航; 黄业成
Original assignee: Huizhou Desay SV Automotive Co Ltd
Current assignee: Huizhou Desay SV Automotive Co Ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-08-17
Anticipated expiration: 2030-12-16

Abstract

The utility model relates to a technical field of on-vehicle video output control especially relates to an on-vehicle LVDS signal monitored control system. The device comprises an input connector, an LVDS deserializer, a first LVDS serializer, a first output connector and a monitoring control module; the input connector, the LVDS deserializer, the first LVDS serializer and the output connector are sequentially connected; the LVDS deserializer is also provided with a second output end and is connected with the monitoring control module through the second output end; the monitoring control module obtains the LVDS video output signal which is the same as the LVDS serializer through the second output end and stores the LVDS video output signal. The utility model discloses a LVDS deserializer will be the LVDS input signal of the same of two tunnel contents of conversion of the same LVDS video output signal to add the original data and the storage that monitoring control module is used for acquireing the output, in order to carry out playback analysis when making things convenient for follow-up trouble to appear, improved on-vehicle LVDS video output signal's reliability, guaranteed user's use and experienced.

Description

Vehicle-mounted LVDS signal monitoring system

Technical Field

The utility model relates to a technical field of on-vehicle video output control especially relates to an on-vehicle LVDS signal monitored control system.

Background

The Low Voltage Differential Signaling (LVDS) bus technology has the advantages of low power supply voltage, low power consumption, low radiation, high anti-interference capability, simple cable wiring and terminal matching, etc., is generally applied to aspects of vehicle multimedia video transmission, camera video transmission, etc., and is gradually popularized in digital high-definition video transmission in automobiles.

With the increasing application of LVDS transmission in the whole vehicle, the complexity of system control is higher and higher, when video transmission problems, especially accidental problems, occur in the daily development and test process, the problems are difficult to reproduce and determine, when vehicle-mounted videos have conditions such as screen flashing and jumping, effective monitoring and analysis cannot be performed, and the reliability of products and the use experience of users are influenced.

Disclosure of Invention

The utility model discloses a solve the inside LVDS transmission signal of whole car present and go wrong and be difficult to reappear, and then can't carry out the technical problem of effective control and analysis, provide a vehicle-mounted LVDS signal monitored control system.

In order to solve the technical problem, the technical scheme of the utility model as follows:

a vehicle-mounted LVDS signal monitoring system comprises an input connector, an LVDS deserializer, a first LVDS serializer, a first output connector and a monitoring control module; the input connector, the LVDS deserializer, the first LVDS serializer and the output connector are sequentially connected; the LVDS deserializer is also provided with a second output end and is connected with the monitoring control module through the second output end; and the monitoring control module acquires the video output signal same as the video output signal of the first LVDS serializer through the second output end and stores the video output signal.

Further, the monitoring control module comprises a processing chip and a storage medium; and the signal input end of the processing chip is connected with the second output end of the LVDS deserializer, and the storage medium is used for storing the video output signal obtained by the processing chip.

Further, the monitoring control module further comprises a second LVDS serializer and a second output connector; the input end of the second LVDS serializer is connected with the signal output end of the processing chip, and the output end of the second LVDS serializer is connected with the second output connector so as to output the stored LVDS video output signal.

Furthermore, a USB interface which can be used for interacting with a PC end is arranged on the processing chip.

Further, the processing chip is also connected with the LVDS deserializer through an I2C bus, and the processing chip acquires an I2C control signal of the LVDS deserializer and adds a time stamp.

Further, the storage medium is eMMC or UFS.

Furthermore, the monitoring control module further comprises a DDR memory, and the processing chip is connected with the DDR memory.

Further, the processing chip adopts a TDA2H chip.

Furthermore, the signal output of the LVDS deserializer adopts an MIPI interface.

The utility model discloses a LVDS deserializer will be the LVDS input signal of the same of two tunnel contents of conversion of the same LVDS video output signal to add the original data and the storage that monitoring control module is used for acquireing the output, in order to carry out playback analysis when making things convenient for follow-up trouble to appear, improved on-vehicle LVDS video output signal's reliability, guaranteed user's use and experienced.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the vehicle-mounted LVDS signal monitoring system.

Wherein:

the input connector is 10, the LVDS deserializer is 20, the first LVDS serializer is 30, the first output connector is 40, the processing chip is 51, the storage medium is 52, the second LVDS serializer is 53, the second output connector is 54, and the DDR memory is 55.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Examples

Fig. 1 shows a schematic structural diagram of a vehicle-mounted LVDS signal monitoring system according to this embodiment.

As shown in fig. 1, the embodiment provides a vehicle-mounted LVDS signal monitoring system, which is mainly used for implementing real-time monitoring, recording and archiving of vehicle-mounted video transmission content, and specifically, in the process of outputting a vehicle-mounted video, the system collects and stores original data on an LVDS bus, so that playback and analysis of the data are facilitated when problems such as screen flashing, jumping and the like occur.

Specifically, the vehicle-mounted LVDS signal monitoring system of the present embodiment includes an input connector 10, an LVDS deserializer 20, a first LVDS serializer 30, a first output connector 40 and a monitoring control module, where in terms of functionality, the LVDS deserializer 20 is configured to deserialize an LVDS signal input by the input connector 10 and transmit the deserialized signal to the first LVDS serializer 30 and the monitoring control module; the first LVDS serializer 30 can package the deserialized signal into an LVDS signal suitable for the output of the first output connector 40. The monitoring control module is used for acquiring the same input signal as the first LVDS serializer 30, namely, the video output signal of the LVDS deserializer, and storing the original data of the video output signal of the automobile as data for subsequent playback and analysis.

In a specific structural aspect, in the present embodiment, the input connector 10, the LVDS deserializer 20, the first LVDS serializer 30 and the first output connector 40 are sequentially connected, and meanwhile, the LVDS deserializer 20 is further provided with a second output terminal through which the LVDS deserializer 20 is connected with the monitoring control module. The monitoring control module can obtain the same LVDS video output signal as the first LVDS serializer 30 from the LVDS deserializer 20 through the second output terminal and store the same. Specifically, the LVDS deserializer 20 converts one LVDS input signal into two LVDS video output signals with the same content, and sends the two LVDS video output signals to the first LVDS serializer 30 and the processing chip 51, so as to realize subsequent video playing and storage of playing data of the automobile, and provide subsequent monitoring and analyzing means while ensuring that the automobile can output smooth video.

The advantage of this embodiment is that the vehicle-mounted LVDS signal monitoring system of this embodiment converts one path of LVDS input signal into two paths of LVDS video output signals with the same content through the LVDS deserializer 20, and adds the monitoring control module for obtaining and storing the original data of the output end, so as to facilitate the playback analysis when a problem occurs in the following, improve the reliability of the vehicle-mounted LVDS video output signal, and ensure the user experience.

Referring to fig. 1, the following are several embodiments of the present embodiment.

In some embodiments, the monitoring control module comprises a processing chip 51 and a storage medium 52, wherein a signal input of the processing chip 51 is connected to the second output of the LVDS deserializer 20, and stores the resulting LVDS video output signal in the storage medium 52. The processing chip 51 is used for processing the acquired original data, storing the processed original data in the storage medium 52, and calling the data for playback and analysis when the data is needed later. It should be noted that the connection between the LVDS deserializer and the first LVDS serializer is a conventional connection, that is, the LVDS deserializer is connected with the first LVDS serializer through a conventional output terminal thereof, and the second output terminal is an additional output port of the same type as the conventional output terminal of the LVDS deserializer.

In some embodiments, the monitoring control module further includes a second LVDS serializer 53 and a second output connector 54, both of which are used to enable output of data of the processing chip 51. The input end of the second LVDS serializer 53 is connected to the signal output end of the processing chip 51, and the output end thereof is connected to the second output connector 54 to output the stored LVDS video output signal.

In some embodiments, the processing chip 51 is provided with a USB interface that can be used for interacting with a PC terminal, and the external PC terminal retrieves the video output signal stored on the storage medium 52 by the processing chip 51 through the USB interface and analyzes the video and the control signal.

In some embodiments, the processing chip 51 is further connected to the LVDS deserializer 20 through an I2C bus, the processing chip 51 obtains the I2C control signal of the LVDS deserializer 20, and at the same time, the processing chip 51 adds a time stamp to the raw data of the video output signal and the I2C control signal, respectively, and packages the data to be stored in the storage medium 52. Preferably, the Storage medium is eMMC (Embedded Multi Media Card, Embedded memory standard specification) or UFS (Universal Flash Storage).

In some embodiments, the monitoring control module further includes a DDR memory 55, and the processing chip 51 is connected to a DDR (Double Data Rate synchronous dynamic random access memory) memory.

For better operation experience, a specific chip type of the present embodiment is provided, specifically, in the present embodiment, the LVDS deserializer 20 employs a MAX96706, the first LVDS serializer 30 and the second LVDS serializer 53 employ a MAX96705, and the processing chip 51 employs a TDA2H chip.

In some embodiments, the LVDS deserializer 20 outputs using a Mobile Industry Processor Interface (MIPI) Interface, and the LVDS deserializer 20 transmits the video output signal to the first LVDS serializer 30 and the monitoring control module through the MIPI Interface.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A vehicle-mounted LVDS signal monitoring system is characterized by comprising an input connector, an LVDS deserializer, a first LVDS serializer, a first output connector and a monitoring control module; the input connector, the LVDS deserializer, the first LVDS serializer and the first output connector are sequentially connected; the LVDS deserializer is also provided with a second output end and is connected with the monitoring control module through the second output end; and the monitoring control module acquires the video output signal same as the LVDS deserializer through a second output end and stores the video output signal.

2. The in-vehicle LVDS signal monitoring system according to claim 1, wherein the monitoring control module includes a processing chip and a storage medium; and the signal input end of the processing chip is connected with the second output end of the LVDS deserializer, and the storage medium is used for storing the video output signal obtained by the processing chip.

3. The in-vehicle LVDS signal monitoring system according to claim 2, wherein the monitoring control module further includes a second LVDS serializer and a second output connector; the input end of the second LVDS serializer is connected with the signal output end of the processing chip, and the output end of the second LVDS serializer is connected with the second output connector so as to output the stored LVDS video output signal.

4. The vehicle-mounted LVDS signal monitoring system according to claim 2, wherein a USB interface capable of interacting with a PC terminal is disposed on the processing chip.

5. The vehicle-mounted LVDS signal monitoring system according to claim 2, wherein the processing chip is further connected with the LVDS deserializer through an I2C bus, and the processing chip acquires an I2C control signal of the LVDS deserializer and adds a time stamp.

6. The in-vehicle LVDS signal monitoring system according to claim 2, wherein the storage medium is eMMC or UFS.

7. The vehicle-mounted LVDS signal monitoring system according to any one of claims 2 to 6, wherein the monitoring control module further comprises a DDR memory, and the processing chip is connected with the DDR memory.

8. The vehicular LVDS signal monitoring system according to any one of claims 2 to 6, wherein the processing chip employs a TDA2H chip.

9. The vehicle-mounted LVDS signal monitoring system according to any one of claims 1 to 6, characterized in that the signal output of the LVDS deserializer adopts an MIPI interface.