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  • TI Thinks Resolved

DLPC350: How to load images on the fly on Lightcrafter 4500 (DPLC350)

Prodigy 140 points

Replies: 7

Views: 245

Part Number: DLPC350

Product: Lightcrafter 4500 (DPLC350)

When using pattern sequence mode, is there a way I can load images to the DLP using USB on the fly instead of those images being displayed through HDMI or "per-stored" images on the flash memory? I was looking at DLPC900 programmers guide and has a feature called "Pattern on-the-fly commands". Is the same possible to be achieved on the DLPC350? If so, how can I achieve this?

Our use for Lightcrafter 4500 is for additive manufacturing. Currently we have to display patterns over HDMI through Raspberry Pi. It would be great if I can load images on the fly directly over USB instead of showing over HDMI. Although I can display per-stored images on the flash memory, it seems this method is not feasible when we have hundreds of patterns we want to load for each experiment. Flashing the ROM takes a very long time.

  • Hello Aftab,

    Unfortunately we do not have a method for on-the-fly pattern loading with the DLPC350 controller. Is there a reason the video input is not acceptable for your application?

    Thanks,

    Kyle

  • In reply to Kyle Rakos:

    Aftab,

    The video input is the most common way of using the DLP4500 chipset to display dynamic patterns but it requires formatting the data and streaming it through the HDMI port.  Keynote Photonics' LC4500 projectors are based on TI's Lightcrafter4500 architecture but can also be ordered with a plug-in Pattern Expansion Module--this allows updating patterns on the fly through either an Ethernet or USB/RNDIS port.  If this sounds like it might be helpful for your specific application then please feel free to have a look at the LC4500 product family on keynotephotonics.com .

    Layne Jenkins
    Applications Engineer
    Keynote Photonics

     

  • In reply to Kyle Rakos:

    Kyle Rakos

    Hello Aftab,

    Unfortunately we do not have a method for on-the-fly pattern loading with the DLPC350 controller. Is there a reason the video input is not acceptable for your application?

    Thanks,

    Kyle

    Currently I am loading patterns through HDMI. When the DLP is connected to a computer, it acts as a secondary monitor. For my additive manufacturing process, I currently have DLP connected to a Raspberry Pi (RPi). A windows PC sends commands to RPi using SSH to display desired pattern in "full screen mode". This method is complicated and introduces latency. Is there any simpler way to display a desired pattern through HDMI in "full screen mode"? Currently in Windows, I don't really know how I can display a desired pattern on a secondary monitor (ex: DLP) in full screen mode... 

  • In reply to Aftab B:

    Hi Aftab, 

    Could you kindly clarify your question a bit further? You should be able to display patterns through HDMI port using any source/frontend. Is your question "How to send pattern through HDMI port in Windows OS environment?

    Thanks & Regards,

    Hirak.

  • In reply to Hirak Biswas:

    Hi Aftab, 

    Do you still need the answer to your question? I'll be closing this thread due to inactivity. You can reopen anytime!

    Thanks & Regards,

    Hirak.

  • In reply to Hirak Biswas:

    Hirak Biswas

    Hi Aftab, 

    Could you kindly clarify your question a bit further? You should be able to display patterns through HDMI port using any source/frontend. Is your question "How to send pattern through HDMI port in Windows OS environment?

    Thanks & Regards,

    Hirak.

    Yes, how do I send patterns through HDMI port in Windows environment? Currently when I connect HDMI to Windows PC, the DLP acts as a projector (secondary monitor).. How can I selectively choose which patterns are displayed over HDMI instead of the DLP acting as a second monitor? 

  • In reply to Aftab B:

    Hi Aftab,

    Kindly note that this query is outside of our DLP expertise so unfortunately I will not be able to help much. You can check out as a starting point.

    Thanks & Regards,

    Hirak.

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