CN210478401U

CN210478401U - Electronic device

Info

Publication number: CN210478401U
Application number: CN201920990368.5U
Authority: CN
Inventors: 吴士鹏; 武维生; 汪瑞
Original assignee: Continental Automotive Body Electronic System Wuhu Co Ltd
Current assignee: Vitesco Automotive Wuhu Co Ltd; Continental Automotive Body Electronic System Wuhu Co Ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-05-08
Anticipated expiration: 2029-06-26

Abstract

The utility model provides an electronic device, including PCB board and display screen, be provided with the controller on the PCB board, deserializer and separator, deserializer, separator and display screen connect gradually, and be connected with the controller respectively and by its control, deserializer is used for turning into the parallel video signal of single channel with the serial video signal of input, and the separator is used for decomposing the parallel video signal of single channel into binary channels's parallel video signal, and the display screen is used for showing binary channels's parallel video signal. The utility model provides an electronic device through using the separator, separates into the parallel video signal of double channel with the parallel video signal of single channel, has reduced the transmission rate of every passageway, reduces the radiation, has both guaranteed the requirement of jumbo size display screen to transmission rate, guarantees again that electronic device satisfies EMC's requirement.

Description

Electronic device

Technical Field

The utility model relates to the field of automobiles, concretely relates to electronic device.

Background

As shown in fig. 1, a serial video data signal output from a video data source (infotainment system) reaches an LVDS deserializer via a Shielded Twisted Pair (STP), and the deserializer converts the input serial video signal into a parallel video signal of a single channel and sends the parallel video signal to a meter display screen for display.

In order to improve the user experience, more and more automobile manufacturers prefer to use large-size display screens.

With the increase of the resolution of the display screen, for example 1920 × 720 display screen, the refresh frequency is 60Hz, which requires a fast enough transmission speed to ensure the normal display of the video signal. When the transmission rate of the parallel video signal of a single channel is greater than a certain value, for example, 100Mb/s, data distortion may be caused.

In addition, the deserializer is connected with the display screen through a Flexible Printed Circuit (FPC), the distance is large, and when the transmission rate is large, large radiation is generated, so that the instrument is difficult to pass the EMC test.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the to-be-solved problem of the utility model is to provide an electronic device, through using the separator, separate into the parallel video signal of double channel with the parallel video signal of single channel, reduced the transmission rate of every passageway, reduce the radiation, both guaranteed jumbo size display screen to transmission rate's requirement, guarantee again that electronic device satisfies EMC's requirement.

The utility model provides an electronic device, including PCB board and display screen, be provided with the controller on the PCB board, deserializer and separator, deserializer, separator and display screen connect gradually, and be connected with the controller respectively and by its control, deserializer is used for turning into the parallel video signal of single channel with the serial video signal of input, and the separator is used for decomposing the parallel video signal of single channel into binary channels's parallel video signal, and the display screen is used for showing binary channels's parallel video signal.

Further, the deserializer and the separator are connected through the routing of the PCB.

Further, the separator and the display screen are connected through a flexible circuit board.

Further, the electronic device also comprises a high-speed data interface or an interface supporting an LVDS signal format.

Further, the controller is connected with the splitter through the I/O port to control the power-on sequence and the power-off sequence of the splitter and detect the feedback signal of the splitter.

Further, the connection interface of the display screen adopts the OpenLDI standard.

Further, the controller is connected to the splitter through IIC, SPI, or UART to configure registers of the splitter to select functions of the splitter and to acquire an operating state of the splitter.

Further, the deserializer and the splitter are separate devices, or the deserializer and the splitter are integrated devices.

Further, the electronic device is an automobile instrument.

Compared with the prior art, the utility model provides an electronic device has following beneficial effect: by using the separator, the parallel video signals of the single channel are separated into the parallel video signals of the double channels, the transmission rate of each channel is reduced, the radiation is reduced, the requirements of a large-size display screen on the transmission rate are ensured, and the electronic device is ensured to meet the requirements of EMC.

Drawings

FIG. 1 is a schematic illustration of a prior art automotive instrument;

fig. 2 is a schematic diagram of a vehicle instrument according to an embodiment of the present invention.

Detailed Description

As shown in fig. 2, an electronic device according to an embodiment of the present invention is an automobile instrument in this embodiment.

The automobile instrument comprises a PCB and a display screen, a controller MCU, a deserializer and a separator are arranged on the PCB, the deserializer and the separator are sequentially connected with the display screen and respectively connected with the controller and controlled by the controller, the deserializer is used for converting input serial video signals into single-channel parallel video signals, the separator is used for decomposing the single-channel parallel video signals into double-channel parallel video signals, and the display screen is used for displaying the double-channel parallel video signals.

The connection interface of the display screen adopts the OpenLDI standard, the basis of the OpenLDI standard is a Low Voltage Differential Signaling (LVDS) interface, and the display screen has the characteristics of high efficiency, Low power consumption, high speed, Low cost, Low clutter interference, capability of supporting higher resolution and the like.

The electronic device also includes a High Speed Data (HSD) interface to provide connectivity for the automotive infotainment module, the camera, the consumer device port, and the display device, which may use coaxial cable or twisted pair connections that meet industry standards.

In other embodiments, an interface supporting the LVDS signal format may also be included.

The deserializer and the separator are connected through the wiring of the PCB, the distance is short, the generated radiation is small, in addition, the influence of the radiation can be considered by the wiring and the layout of the PCB, and the influence of the radiation can be reduced by the reasonable wiring and the layout.

The separator is connected with the display screen through the flexible circuit board, and the distance is far longer than the connecting distance between the deserializer and the separator on the PCB. The transmission rate of the separated parallel video signals is reduced to half of the original transmission rate, and radiation generated on a longer flexible circuit board can be greatly reduced, so that the requirement of a large-size display screen on the transmission rate is guaranteed, and the display screen meets the requirement of EMC.

The controller is connected with the separator through the I/O port so as to control the power-on time sequence and the power-off time sequence of the separator and detect a feedback signal of the separator; the separator is connected through IIC, SPI or UART to configure the register of the separator to select the function of the separator and to acquire the operating state of the separator. The Inter-Integrated Circuit (IIC) is an Integrated Circuit bus, the serial Peripheral interface (spi) is a serial Peripheral interface, and the Universal Asynchronous Receiver Transmitter (UART) is a Universal Asynchronous Receiver Transmitter (UART).

The MCU and the display screen are also connected through a flexible circuit board. In addition, some display screens also support one or more communication modes of IIC, SPI and UART, namely the MCU can be connected through the communication modes to control the display screens.

In this embodiment, the deserializer and the separator are separate devices, and in other embodiments, the deserializer and the separator are integrated devices, for example, the deserializer of the separator is integrated, which is not limited by the present invention.

Although the present invention has been described with reference to the preferred embodiments, the present invention is not limited thereto. Various changes and modifications can be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention is to be determined by the appended claims.

Claims

1. The utility model provides an electronic device, its characterized in that, electronic device includes PCB board and display screen, is provided with controller, deserializer and separator on the PCB board, and deserializer, separator and display screen connect gradually, and be connected with the controller respectively and by its control, and the deserializer is used for turning into the parallel video signal of single channel with the serial video signal of input, and the separator is used for decomposing the parallel video signal of single channel into binary channels's parallel video signal, and the display screen is used for showing binary channels's parallel video signal.

2. The electronic device of claim 1, wherein the deserializer and the splitter are connected by traces of a PCB board.

3. The electronic device of claim 1, wherein the separator and the display screen are connected by a flexible circuit board.

4. The electronic device of claim 1, further comprising a high-speed data interface or an interface supporting an LVDS signal format.

5. The electronic device of claim 1, wherein the controller is connected to the splitter through the I/O port to control a power-up timing, a power-down timing of the splitter, and a feedback signal to detect the splitter.

6. The electronic device as claimed in claim 5, wherein the controller is connected to the splitter through IIC, SPI or UART to configure a register of the splitter to select a function of the splitter and to acquire an operation state of the splitter.

7. The electronic device of claim 1, wherein the connection interface of the display screen employs the OpenLDI standard.

8. The electronic device of claim 1, wherein the deserializer and the splitter are separate devices or are an integrated device.

9. The electronic device of claim 1, wherein the electronic device is an automotive instrument.