HDM-to-eDP interface conversion device and interface conversion method based on an FPGA

Abstract

The invention discloses an HDM-to-eDP interface conversion device and interface conversion method based on an FPGA. An FPGA module in the device comprises an HDMI RX module, a MicroBlaze soft core module, a scaler scaling module, an FIFO module, a DDR3 bus control module, a DDR3 IP core module, a 4K image data fusion module, a 4K high-definition time sequence control module and an eDP TX module. The HDMI RX module receives a video image from the PC host; the HDMI RX module converts the HDMI video image into an RGB format; the scaler scaling module amplifies the resolution of the video image in the RGB format to 4K, and the resolution is stored by the FIFO module; when the number of the stored data of the FIFO module reaches a preset pixel point number, the currently stored pixel point is stored into the DDR3 SDRAM; the 4K image data fusion module reads data from the DDR3 SDRAM for preprocessing, then the data is converted into an eDP signal by the 4K high-definition sequential control module, and the eDP signal is sent to the high-definition display by the eDP TX hardware interface. According to the invention, the display speed of the 4K high-definition liquid crystal display is high.

Description

technical field [0001] The invention relates to the field of 4K high-definition liquid crystal display systems, in particular to an FPGA-based HDM-to-eDP interface conversion device and an interface conversion method. Background technique [0002] At present, the solution commonly used by major LCD manufacturers to light up 4K eDP interface LCD panels is designed based on eDP processing chips such as MSTAR or Realtek in Taiwan, China, and Hisilicon image processing chips in mainland China. If this solution needs to add new It is particularly difficult to transfer image data or change a certain performance. For example, adding a sub-screen eDP display on the basis of the main screen eDP display or VGA ring output to display images with different resolutions cannot be realized by the above solutions. Moreover, the liquid crystal panel of this technical solution has a slow display speed for 4K video images. Contents of the invention [0003] The technical problem to be solve...

AI Technical Summary

Problems solved by technology

[0002] At present, the solutions commonly used by major LCD display manufacturers to light up 4K eDP interface LCD panels are based on Taiwan MSTAR or Realtek and Chinese mainland HiSilicon image processing chips, etc. It is designed by eDP processing chip, but it is very difficult to add new image data transmission function or change a certain performance by adopting this solution, such as adding a sub-screen eDP display or VGA ring-out display on the basis of the main screen eDP display Images with different resolutions cannot be implemented with the above scheme

And the display speed of the liquid crystal panel of this technical scheme is slow to 4K video image

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