The invention relates to an icon display method and device for an automobile electronic instrument screen, and the method comprises the steps: starting a reading channel of a VDMA module to circularly read a backup image in a slow DDR cache module when the input of an LVDS video signal is not detected, and forming a video stream to enter an OSD module; the SPI receiving module is controlled to receive a UI superposition instruction from the MCU, and the UI superposition instruction comprises a head address of a UI icon in a DDR cache; the initial address is configured into a DMA (Direct Memory Access) through an AXI-lite interface; starting a DMA module to read corresponding UI icon data in a read channel according to the head address, superposing the UI icon data in the video stream, continuously updating the superposed video stream on the automobile electronic instrument screen, inserting a VDMA module in an LVDS link to perform backup caching on a current video image, and storing the current video image in the LVDS link. Under the condition that the video link is abnormal and no LVDS video is input, the electronic instrument screen can still display normally, and the abnormal black screen phenomenon is avoided.

    本发明为一种汽车电子仪表屏的图标显示方法及装置,包括:当未检测到LVDS视频信号输入时,启动VDMA模块的读通道循环读取缓DDR缓存模块中的备份图像,形成视频流进入OSD模块;控制SPI接收模块接收来自MCU的UI叠加指令,其中,所述UI叠加指令包括UI图标在DDR缓存中的首地址;所述首地址通过AXI‑lite接口配置到DMA中;根据所述首地址启动DMA模块在读通道读取相应的UI图标数据,将所述UI图标数据叠加在所述视频流中,在所述汽车电子仪表屏持续更新所述叠加后的视频流,在LVDS链路中插入VDMA模块对当前视频图像进行备份缓存,在视频链路异常且无LVDS视频输入的情况下,电子仪表屏仍然能够正常显示,避免了异常黑屏现象。


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    Titel :

    Icon display method and device for automobile electronic instrument screen


    Weitere Titelangaben:

    一种汽车电子仪表屏的图标显示方法及装置


    Beteiligte:
    LI JIASONG (Autor:in) / ZHANG CANCHENG (Autor:in) / GUO CANYANG (Autor:in) / CHEN PING (Autor:in) / HUANG XIAODONG (Autor:in) / SUN CHENGYI (Autor:in) / XIAO YUNHAO (Autor:in)

    Erscheinungsdatum :

    2023-11-21


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    H04N PICTORIAL COMMUNICATION, e.g. TELEVISION , Bildübertragung, z.B. Fernsehen / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / G09G Anordnungen oder Schaltungen zur Steuerung oder Regelung von Anzeigevorrichtungen mit statischen Mitteln zur Darstellung veränderlicher Informationen , ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION



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