Backlight control method of head-up display based on spi

一种平视显示器、背光控制的技术，应用在静态指示器、阴极射线管指示器、仪器等方向，能够解决很难传送一次、不够平滑显示、闪烁等问题，达到改善显示闪烁、降低SPI总线负载、平滑性提高的效果

Active Publication Date: 2019-08-02
CONTINENTAL AUTOMOTIVE INTERIOR WUHU CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the above solution, when the backlight setting command needs to be sent, the current SPI bus may be occupied by other SPI commands, and the SPI bus resources must be released after the command is transmitted and the corresponding function is completed. It is used to send the backlight setting command, so it is difficult to ensure that the backlight setting command is transmitted every 16 or 17 milliseconds, resulting in insufficient smoothness of the backlight change and flickering on the display

Method used

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  • Backlight control method of head-up display based on spi
  • Backlight control method of head-up display based on spi
  • Backlight control method of head-up display based on spi

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[0014] In the following description, numerous specific details are set forth in order to enable those skilled in the art to fully understand the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. Furthermore, it should be understood that the invention is not limited to the particular embodiments described. Instead, it is conceivable to implement the present invention in any combination of the following features and elements, regardless of whether they relate to different embodiments. Accordingly, the following aspects, features, embodiments and advantages are by way of illustration only and should not be considered elements or limitations of the claims unless explicitly stated in the claims.

[0015] Such as figure 1 As shown, according to an embodiment of the present invention, after the vehicle controller obtains environmental parameters (such as ambient light) and u...

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Abstract

An SPI-based head-up display backlight control method, comprising: an automobile controller uses a frequency of a video source signal of the head-up display as a frequency for backlight value calculation, and calculates the backlight value at this frequency; The backlight value is put into a backlight setting command and sent to the LED controller through the SPI bus; after the LED controller obtains the backlight setting command, each time it obtains a frame synchronization signal, it sequentially applies the backlight value in a backlight setting command. The method reduces the load of the SPI bus, improves the smoothness of the backlight change, and improves the display flickering phenomenon.

Description

technical field [0001] The invention relates to a head-up display control technology, in particular to a SPI-based head-up display (HUD, Head-Up Display) backlight control method. Background technique [0002] The head-up display allows the driver to view some necessary information during driving without looking down, thus helping to improve driving safety and enhance the convenience of information acquisition. [0003] At present, the industry is also further developing solutions that can enhance the performance of head-up displays. For example, the Digital Light Processing (DLP, Digital Light Processing) chipset launched by Texas Instruments (TI) is designed for automotive head-up display applications. The chipset is mainly composed of A digital micromirror device (DMD, Digital Micro-mirror Device) and a corresponding DLP controller are formed. For the DLP head-up display application, the LED backlight control related to the display is generally completed by two controlle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32H04N5/04H04N7/01H05B44/00
CPCG09G3/32H04N5/04H04N7/01B60K35/00G09G3/3406G09G5/10G09G2320/0626G09G2350/00G09G2360/16G09G2370/04G09G2370/10G09G2380/10G02B2027/0118G02B27/0101H05B45/30B60K35/23B60K2360/334
Inventor 常喜
Owner CONTINENTAL AUTOMOTIVE INTERIOR WUHU CO LTD
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