CN212765714U - Video input display system of vehicle instrument - Google Patents
Video input display system of vehicle instrument Download PDFInfo
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- CN212765714U CN212765714U CN202021779182.4U CN202021779182U CN212765714U CN 212765714 U CN212765714 U CN 212765714U CN 202021779182 U CN202021779182 U CN 202021779182U CN 212765714 U CN212765714 U CN 212765714U
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Abstract
The utility model discloses a video input display system of automobile-used instrument, the video of system fuses the video input interface that the chip passes through the data line connection display screen, the control interface passing signal line connection instrument MCU of video fusion chip, the video input interface of video fusion chip is connected to instrument MCU video output interface passing signal line. The utility model discloses video input display system. The high-low configuration compatible design can be realized, the cost performance of each configuration is high, and the research and development cost of software and hardware is reduced.
Description
Technical Field
The utility model relates to an motormeter shows technical field.
Background
In the current technical scheme, a video decoding chip is used for converting an external video into a format supported by an instrument processor, transmitting the format to the instrument processor, and rendering, compressing, cutting and the like by the instrument processor. And then the video and the instrument indication (pointer, alarm and picture) are fused and transmitted to the TFT display for display. As shown in fig. 2, such display modes are difficult to control in cost, have limited video processing capability, for example, full-screen video input cannot be processed, and furthermore, have limited video processing capability, for example, full-screen video input cannot be processed, and the video format that can be processed by the meter processor is single, and the compatibility is poor.
Disclosure of Invention
The utility model aims to solve the technical problem that realize a video input display system of compatible high, the automobile-used instrument of processing efficient.
In order to realize the purpose, the utility model discloses a technical scheme be: a video input display system of a vehicle instrument is characterized in that a video fusion chip of the system is connected with a video input interface of a display screen through a data line, a control interface of the video fusion chip is connected with an instrument MCU through a signal line, and a video output interface of the instrument MCU is connected with a video input interface of the video fusion chip through a signal line.
The external video signal output module is connected with a deserializing chip (Des) of the automobile instrument through a serial chip (Ser), and the deserializing chip is connected with a video input interface which is connected with a video fusion chip through a signal wire.
And the deserializing chip is communicated with the instrument MCU.
The video fusion chip is connected with registers which are respectively used for calling EEPROM and Flash contents.
The utility model discloses video input display system. The high-low configuration compatible design can be realized, the cost performance of each configuration is high, and the research and development cost of software and hardware is reduced.
Drawings
The following is a brief description of the contents expressed by each figure in the specification of the present invention:
FIG. 1 is a schematic diagram of a video input display system for a vehicle instrument;
fig. 2 is a schematic diagram of a prior art display system.
Detailed Description
The following description of the embodiments with reference to the drawings is intended to illustrate the present invention in further detail, such as the shapes and structures of the components, the mutual positions and connections between the components, the functions and working principles of the components, the manufacturing process, and the operation and use methods, etc., so as to help those skilled in the art understand the present invention more completely, accurately and deeply.
The utility model discloses use solitary video to fuse the chip, realize that the instrument exports TFT's video and external input video (for example: navigation map, driving streaming media, the image of backing a car) to fuse, transmit to TFT after fusing and show. Because the external input video does not need to be processed and operated by the instrument processor, the load of the instrument processor is reduced. The used video fusion chip can be additionally provided with Flash and EEPROM, so that the prompting functions of superimposing characters and graphs and alarming pictures after video fusion are realized.
As shown in fig. 1, the video fusion chip is connected to the video input interface of the display screen through a data line, the instrument video output interface is connected to the video fusion chip, the external video is converted into LVDS/LVTTL/analog signals through the deserializing chip and is connected to the video fusion chip, the decoding work is completed through the Ser chip and the Des chip in the middle, the control interface of the video fusion chip is connected to the instrument MCU through a signal line, the video fusion chip is controlled by the instrument MCU, and the video output interface of the video fusion chip is connected to the instrument display screen.
When the instrument MCU receives a video display command (for example, through deserializer transmission or menu switching), the instrument MCU controls the configuration parameters of the video fusion chip register to realize the fusion display of the two paths of videos.
The video fusion chip can realize the adjustment of picture-in-picture, picture-outside-picture, transmittance, contrast, gray scale, Gamma parameter, video size and the like by configuring the register of the video fusion chip. And the calling of EEPROM and Flash content can be realized through the register setting, and the operations of adding pictures, characters, graphs and the like on the video can be realized. The instrument output video can draw a fixed color in the special-shaped area, and the video fusion chip register is controlled, so that the special-shaped area is replaced by an externally input video.
Because the processing of the input video is realized by the fusion chip, the load and the calculation force requirements of the instrument processor are reduced, and the cost is reduced. The video fusion chip can enhance the video processing capability, support the processing of standard definition (1280 × 720) and high definition (1920 × 1080) videos, and adjust the video rendering, zooming, clipping, contrast and the like, and the system supports multiple interfaces, wide format and supports LVDS, LVTTL and analog video interfaces. And formats such as RGB24bit/18bit, YCbCr24bit/16bit/8bit, ITU-RBT.656, NTSC/PAL (ITU-RBT.470) and the like are supported.
The present invention has been described above with reference to the accompanying drawings, and it is to be understood that the invention is not limited to the specific embodiments described above, and that the invention is not limited to the specific embodiments described above, but rather is intended to cover various insubstantial modifications of the inventive method and solution, or its application to other applications without modification.
Claims (4)
1. A video input display system of a vehicle instrument is characterized in that: a video fusion chip of the system is connected with a video input interface of a display screen through a data line, a control interface of the video fusion chip is connected with an instrument MCU through a signal line, and a video output interface of the instrument MCU is connected with a video input interface of the video fusion chip through a signal line.
2. The video input display system of a meter for a vehicle of claim 1, wherein: the external video signal output module is connected with a deserializing chip of the automobile instrument through a serial chip, and the deserializing chip is connected with a video input interface which is connected with a video fusion chip through a signal wire.
3. The video input display system of a meter for a vehicle of claim 2, wherein: and the deserializing chip is communicated with the instrument MCU.
4. The video input display system of the meter for vehicle according to claim 1, 2 or 3, wherein: the video fusion chip is connected with registers which are respectively used for calling EEPROM and Flash contents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021779182.4U CN212765714U (en) | 2020-08-24 | 2020-08-24 | Video input display system of vehicle instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021779182.4U CN212765714U (en) | 2020-08-24 | 2020-08-24 | Video input display system of vehicle instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212765714U true CN212765714U (en) | 2021-03-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021779182.4U Active CN212765714U (en) | 2020-08-24 | 2020-08-24 | Video input display system of vehicle instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212765714U (en) |
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2020
- 2020-08-24 CN CN202021779182.4U patent/CN212765714U/en active Active
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