DLP Triggering Accuracy

Prodigy 30 points

Replies: 5

Views: 54

Hello,

I'm looking to purchase a DLP EVM unit that I can accurately synchronize with the frames of a 60 Hz LCD screen.

I want to know the accuracy of the triggering of each of the models? How long is the HDMI lag if I wanted to use this to input the frames I want to display on the DLP, triggered by a VSYNC signal from my LCD? Or what is the maximum number of unique 2D 8-bit grayscale patterns I could store internally?

Many Thanks,

Brooke

5 Replies

  • Brooke,

    Welcome to the E2E forums, and thanks for your interest in our DLP technology.

    It sounds like you want to stream your patterns externally at 60 Hz from an HDMI parallel input. Is that right?

    Regards,

    Philippe Dollo

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  • In reply to Philippe Dollo:

    Hi Philippe,

    Thank you, I appreciate your help!

    Yes, but ideally I would be able to display several patterns on the DMD during a single LCD frame i.e. 1 LCD frame would trigger and synchronize with 4 DMD frames (so 240Hz operation). I don't mind whether these pattens are passed over HDMI or stored internally, but I'm looking for the best possible synchronization for the above 1:4 frame scenario, so I would like to know more about the latency of the triggering of your devices.

    Brooke

  • In reply to Brooke Krajancich:

    Hi Brooke,

    If you HDMI it will at a minimum one frame delay. Means the data start on the DMD at the following fame sync. The minimum latency is available with the pre-stored patterns, however, due to local storage, there is a limitation on the number of patterns you can store. Are these four patterns binary or like 8-bit grey scale patterns? Will the be dynamically changing from one LCD frame to other? 

    Are these simple patterns ex - line of grid or proper grayscale patterns with any arbitrary content?

    Regards,

    Sanjeev

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  • In reply to Sanjeev:

    Hi Sanjeev,

    Thanks for your help!

    Ideally, we'd be able to display as many binary patterns as we can within each LCD frame, but hitting >240Hz 8-bit grayscale would be fine. The patterns will change from one LCD frame to another, ideally totalling at least 5s, so 1200 8-bit DMD frames. They will be proper grayscale patterns with any arbitrary content.

    What's the easiest way to set-up custom HDMI streaming? Can you do it using only the advanced GUI?

    Thanks!

    Brooke

  • In reply to Brooke Krajancich:

    Hi Brooke,

    Yes, you can set-up the HDMI streaming using GUI. I will discuss your use case with the team and will let you know which DLP EVM can meet this requirement.

    I will get back to you soon.

    Regards,

    Mayank