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DLP5530Q1EVM: How to control DMD to display image

Part Number: DLP5530Q1EVM
Other Parts Discussed in Thread: DLPC230-Q1

I can now input the image, compile it into a bin file, and then display it. Basically I want that How to control DMD to display image (preferably video) in real time by programming or any other method?

  • Hi Lidong - 

    When programming Splash Screens into the DLPC230 flash bin file, only 4-8 images are supported. This method is suitable for displaying static images; it is not suitable for displaying video content.

    In order to display video content, the best method is to display external video input. For this, you will need to use the Single OpenLDI (FPD-Link I) Port up to 110 MHz or 24-bit RGB Parallel Interface up to 110 MHz. This means sending video to the DLP chipset from your external processor, such that your external processor calculates and applies the image changes you want to display before sending the updated image output over the video interface. When using either of the two video interfaces, the content will update at one frame rate. The supported frame rate of the DLPC230-Q1 is 60Hz, so the video latency is 16.66ms. On the DLP5530Q1EVM, there is a micro-HDMI input connector you can use to connect to your computer for out-of-box testing. In DLP Control Program, you will need to change the Source to "External Parallel Video 1152x576 60Hz" or "External Parallel Video 1152x1152 60Hz"

  • I want to clarify that what kind of devices can act as "External Parallel Video 1152x576 60Hz" or "External Parallel Video 1152x1152 60Hz"? PC can surely act as source of video but apart from PC is there any device which can act as source of video to DMD?

  • Hello all

    Any feedback about this query?

  • Hi Lidong - 

    Some customers supply the video content from an embedded graphics processor (GPU). Typically production designs use an embedded approach, whereas demo/prototype systems source the content from a PC via HDMI.

    Regards,

    Ross

  • Hi  

    My concern is to project the video on DMD through external peripheral (it may be GPU as mentioned by you) for the production and commercial basis.

    Kindly let me know the method to display the video without PC (it can be standalone device).

  • Hi Lidong - 

    In order to display content sent via the external video input, you need to select the appropriate Batch Command Set video source. For example, in order to process video input on the Parallel RGB888 port with 1152 x 576 @ 60Hz, select the corresponding command set in the Control Program tool.

      

    Alternatively, using DLP Composer for Automotive tool, you can select the desired Batch Command Set to be displayed as a default when the system powers up. As long as the video source is sending content that matches the Batch Command Set parameters, the DLP chipset will display the video content.

    Regards,

    Ross